/* ==========================================================================
   3D КУЗНЯ ЧУДЕС — ДИЗАЙН-СИСТЕМА «FRIENDLY ARCADE» (v2.0.0)
   Спільний дрескод з LEGO WeDo 2.0 Catalog • 100% офлайн • WCAG AA доступність
   ========================================================================== */

:root {
  /* --- 1. СПІЛЬНІ ТОКЕНИ ПОВЕРХОНЬ (Deep Midnight Arcade) --- */
  --bg: #1a1a2e;                 /* Головне тло сторінки */
  --bg2: #16213e;                /* Поглиблені блоки, поля вводу */
  --surface: #0f3460;            /* Панелі, сайдбари, тулбари */
  --surface2: #1a4080;           /* Рамки контролів, розділювачі */
  --card: #1e3a5f;               /* Тло карток */
  --card-hover: #264d73;         /* Стан наведення карток */

  /* --- 2. МІКРО-КОНТУРИ ТА РАМКИ --- */
  --border: rgba(255, 255, 255, 0.12);
  --border-strong: rgba(255, 255, 255, 0.24);
  --border-focus: #00d2ff;
  --border-width-control: 2px;
  --border-width-card: 3px;

  /* --- 3. АРКАДНІ ТА LEGO АКЦЕНТИ --- */
  --green: #00d26a;              /* Головний CTA / Успіх / Готово */
  --green2: #00b85c;
  --green-dark: #00b85c;
  --on-green: #06210f;           /* Контрастний темний текст на зеленому (> 7:1) */
  --yellow: #ffc312;             /* Золото / Увага / Зірки */
  --on-yellow: #261b00;          /* Текст на жовтому */
  --red: #ff4757;                /* Сердечка / Вибране / Небезпека */
  --on-red: #ffffff;
  --blue: #1e90ff;               /* Інженерний інфо-синій */
  --cyan: #00d2ff;               /* Фокус і небесний контур */
  --purple: #a855f7;             /* Магія / Рідкісні місії */
  --orange: #ff6b35;             /* Тренди / Вогонь */
  --pink: #ff6b9d;               /* Додатковий акцент */

  /* Архітектурні акценти Кузні */
  --accent-forge: #f59e0b;       /* Теплий бурштин вогнища */
  --accent-gold: #fbbf24;
  --accent-craft: #00d26a;       /* Friendly green */
  --accent-craft-dark: #00b85c;
  --accent-primary: #1e90ff;     /* Friendly blue */
  --accent-sky: #00d2ff;         /* Friendly cyan */

  /* --- 4. СТАТУСИ ТА ДІАГНОСТИКА --- */
  --status-ok: #00d26a;
  --status-ok-bg: rgba(0, 210, 106, 0.16);
  --status-warn: #ffc312;
  --status-warn-bg: rgba(255, 195, 18, 0.16);
  --status-danger: #ff4757;
  --status-danger-bg: rgba(255, 71, 87, 0.18);

  /* --- 5. ТИПОГРАФІКА ТА ТЕКСТОВИЙ КОНТРАСТ (WCAG AA) --- */
  --text: #ffffff;
  --text2: #c3dcff;
  --text-muted: #8da6cc;
  --text-main: #ffffff;
  --text-secondary: #c3dcff;
  --text-dim: #8da6cc;

  --font-sans: 'Segoe UI', Roboto, -apple-system, BlinkMacSystemFont, "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, "Cascadia Code", "Source Code Pro", Menlo, Monaco, Consolas, monospace;

  --text-xs: 12px;
  --text-sm: 13.5px;
  --text-base: 15px;
  --text-lg: 17px;
  --text-xl: 20px;
  --text-2xl: 24px;

  /* --- 6. РАДІУСИ ЗАОКРУГЛЕННЯ --- */
  --radius-xs: 6px;
  --radius-sm: 10px;
  --radius: 16px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-full: 999px;
  --r-xs: 6px;
  --r-sm: 10px;
  --r-md: 16px;
  --r-lg: 24px;
  --r-pill: 999px;

  /* --- 7. ТІНІ ТА М'ЯКЕ СВІЧЕННЯ --- */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.25);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.35);
  --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.5);
  --shadow-modal: 0 24px 48px rgba(0, 0, 0, 0.75), 0 4px 16px rgba(0, 0, 0, 0.4);
  --shadow-glow-green: 0 4px 20px rgba(0, 210, 106, 0.35);
  --shadow-glow-cyan: 0 0 20px rgba(0, 210, 255, 0.3);

  /* --- 8. ТАКТИЛЬНІ АНІМАЦІЇ --- */
  --ease-spring: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-smooth: cubic-bezier(0.25, 0.8, 0.25, 1);
  --ease-bounce: cubic-bezier(0.175, 0.885, 0.32, 1.275);
  --transition-fast: 140ms var(--ease-spring);
  --transition-normal: 220ms var(--ease-spring);

  /* --- 9. ЗВОРОТНА СУМІСНІСТЬ (ALIASES) --- */
  --bg-canvas: var(--bg);
  --bg-surface: var(--surface);
  --bg-card: var(--card);
  --bg-card-hover: var(--card-hover);
  --bg-card-elevated: #28476f;
  --bg-input: var(--bg2);
  --bg-active: var(--surface2);
  --border-subtle: var(--border);
  --border-default: var(--border);
  --border-hover: rgba(255, 255, 255, 0.25);
  --border-active: rgba(255, 255, 255, 0.4);
}

/* ==========================================================================
   БАЗОВІ СТИЛІ ТА СКИДАННЯ
   ========================================================================== */

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  user-select: none;
  -webkit-font-smoothing: antialiased;
}

:focus-visible {
  outline: 3px solid var(--cyan) !important;
  outline-offset: 2px !important;
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

html {
  height: 100%;
  height: -webkit-fill-available;
  height: 100dvh;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-canvas);
  color: var(--text-main);
  height: 100%;
  height: -webkit-fill-available;
  height: 100dvh;
  min-height: 100%;
  min-height: -webkit-fill-available;
  min-height: 100dvh;
  width: 100%;
  max-width: 100vw;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

input, select, textarea {
  font-family: inherit;
  font-size: var(--text-base);
  color: var(--text-main);
  user-select: auto;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  outline: none;
}

/* Моноширинні табличні цифри для розмірів, таймерів і координат */
.num-tabular {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.2px;
}

/* Акуратні кастомні смуги прокрутки без сірого AI-slop */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}
::-webkit-scrollbar-track {
  background: transparent;
}
::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-full);
}
::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 255, 255, 0.22);
}

* {
  scrollbar-width: thin;
  scrollbar-color: rgba(255, 255, 255, 0.12) transparent;
}

/* ==========================================================================
   ВЕРХНЯ ПАНЕЛЬ (ШАПКА СТУДІЇ)
   ========================================================================== */

.topbar {
  min-height: 54px;
  height: 54px;
  background: linear-gradient(135deg, #0f3460 0%, #1a1a2e 50%, #0f3460 100%);
  border-bottom: 2px solid var(--surface2);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.4);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 16px;
  z-index: 100;
  gap: 12px;
  flex-shrink: 0;
  position: relative;
}


.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.brand-logo {
  width: 38px;
  height: 38px;
  border-radius: var(--r-md);
  background: var(--card);
  border: 2px solid var(--surface2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  cursor: pointer;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.12);
  transition: transform var(--transition-fast), border-color var(--transition-fast);
}

.brand-logo:hover {
  transform: scale(1.08);
  border-color: var(--yellow);
}

.brand-logo:active {
  transform: scale(0.94);
}

.brand-title-row {
  display: flex;
  align-items: center;
  gap: 8px;
}

.brand-title h1 {
  font-size: 15px;
  font-weight: 900;
  letter-spacing: 0.5px;
  color: var(--text-main);
  text-transform: uppercase;
}

.brand-subtitle,
.brand-title p {
  font-size: 11px;
  color: var(--text-muted);
  line-height: 1.2;
  white-space: nowrap;
}


.version-pill {
  background: rgba(0, 210, 106, 0.16);
  border: 2px solid var(--green);
  color: var(--green);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 800;
  padding: 1px 8px;
  border-radius: var(--r-pill);
}

/* --- ТАБИ ГЕНЕРАТОРІВ (СЕГМЕНТОВАНЕ ПЕРЕМИКАННЯ) --- */
.gen-tabs {
  display: flex;
  align-items: center;
  background: var(--bg2);
  padding: 4px;
  border-radius: var(--r-pill);
  border: 2px solid var(--surface2);
  gap: 4px;
  flex-shrink: 0;
}

.gen-tab-btn {
  background: transparent;
  color: var(--text-muted);
  border: 2px solid transparent;
  border-radius: var(--r-pill);
  padding: 6px 14px;
  font-size: var(--text-sm);
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.gen-tab-btn:hover {
  color: var(--text-main);
  background: rgba(255, 255, 255, 0.08);
}

.gen-tab-btn.active {
  background: var(--surface2);
  color: #fff;
  border-color: var(--cyan);
  box-shadow: 0 2px 10px rgba(0, 210, 255, 0.25);
  font-weight: 800;
}

.btn-missions-tab {
  background: rgba(255, 195, 18, 0.12);
  border-color: rgba(255, 195, 18, 0.35);
  color: var(--yellow);
}

.btn-missions-tab:hover {
  background: rgba(255, 195, 18, 0.24);
  border-color: var(--yellow);
  color: #fff;
  transform: translateY(-2px);
}

.btn-missions-tab.active {
  background: var(--yellow);
  border-color: var(--yellow);
  color: var(--on-yellow);
  box-shadow: 0 0 12px rgba(255, 195, 18, 0.35);
}

/* --- СИСТЕМНІ ТА ІНСТРУМЕНТАЛЬНІ ДІЇ У ШАПЦІ --- */
.top-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

.top-action-group {
  display: flex;
  align-items: center;
  gap: 4px;
  background: var(--bg2);
  padding: 3px 6px;
  border-radius: var(--r-pill);
  border: 2px solid var(--surface2);
}

.btn-action {
  background: var(--card);
  color: var(--text-secondary);
  border: 2px solid var(--surface2);
  border-radius: var(--r-pill);
  padding: 5px 12px;
  font-size: var(--text-sm);
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 5px;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.btn-action:hover {
  background: var(--card-hover);
  color: var(--text-main);
  border-color: var(--yellow);
  transform: translateY(-2px);
}

.btn-action:active {
  transform: scale(0.96);
}

.btn-action:disabled,
.btn-action.disabled {
  opacity: 0.35;
  pointer-events: none;
  transform: none !important;
}

.btn-history {
  padding: 5px 8px;
  font-size: 14px;
}

.btn-mono.active {
  background: var(--surface2);
  border-color: var(--cyan);
  color: #fff;
  box-shadow: 0 0 10px rgba(0, 210, 255, 0.25);
}

.btn-v1 {
  background: rgba(245, 158, 11, 0.1);
  border-color: rgba(245, 158, 11, 0.25);
  color: var(--accent-gold);
}

.btn-v1:hover {
  background: rgba(245, 158, 11, 0.2);
  border-color: var(--accent-forge);
}

.btn-v1.has-v1 {
  border-color: var(--accent-forge);
  box-shadow: 0 0 0 1px var(--accent-forge);
}

.btn-card {
  background: rgba(2, 132, 199, 0.12);
  border-color: rgba(2, 132, 199, 0.3);
  color: #38bdf8;
}

.btn-card:hover {
  background: rgba(2, 132, 199, 0.22);
  border-color: #38bdf8;
}

.btn-project {
  color: var(--text-main);
  border-color: rgba(255, 255, 255, 0.15);
}

.btn-project:hover {
  background: var(--bg-card-hover);
  border-color: var(--accent-sky);
  color: #fff;
}

.btn-sound {
  color: var(--text-main);
}

.btn-sound.muted {
  opacity: 0.65;
  border-color: rgba(239, 68, 68, 0.4);
  color: #fca5a5;
  background: rgba(239, 68, 68, 0.1);
}

.btn-music {
  color: var(--text-secondary);
}

.btn-music.playing {
  background: rgba(16, 185, 129, 0.16);
  border-color: rgba(16, 185, 129, 0.45);
  color: #6ee7b7;
  font-weight: 700;
  box-shadow: 0 0 8px rgba(16, 185, 129, 0.25);
}

.btn-random {
  color: #c084fc;
  border-color: rgba(192, 132, 252, 0.25);
}

.btn-random:hover {
  border-color: #c084fc;
}

.btn-sim {
  color: var(--accent-gold);
  border-color: rgba(245, 158, 11, 0.3);
}

.btn-sim.active-sim {
  background: rgba(239, 68, 68, 0.2);
  border-color: var(--status-danger);
  color: #fca5a5;
}

.btn-export {
  background: var(--green);
  color: var(--on-green);
  border: 2px solid var(--green);
  border-radius: var(--r-pill);
  font-weight: 900;
  box-shadow: var(--shadow-glow-green);
  transition: all var(--transition-fast);
}

.btn-export:hover {
  background: var(--green-dark);
  color: var(--on-green);
  border-color: var(--green-dark);
  transform: translateY(-2px);
  box-shadow: 0 4px 20px rgba(0, 210, 106, 0.5);
}

.btn-export:active {
  transform: scale(0.96);
}

.illusion-highlight {
  background: rgba(16, 185, 129, 0.15) !important;
  border-color: rgba(16, 185, 129, 0.4) !important;
  color: #6ee7b7 !important;
  font-weight: 700;
}

.illusion-highlight:hover {
  background: rgba(16, 185, 129, 0.28) !important;
  color: #fff !important;
}


/* --- ВИПАДНЕ МЕНЮ НАЛАШТУВАНЬ ТА ОПЦІЙ У ШАПЦІ --- */
.menu-dropdown-wrapper {
  position: relative;
}

.btn-menu-toggle {
  background: var(--bg-card);
  color: var(--text-secondary);
  border: 1px solid var(--border-subtle);
  display: inline-flex;
  align-items: center;
  gap: 5px;
  cursor: pointer;
}

.btn-menu-toggle:hover,
.btn-menu-toggle.active {
  background: var(--bg-card-hover);
  color: var(--text-main);
  border-color: var(--border-default);
}

.top-dropdown-menu {
  position: absolute;
  top: calc(100% + 6px);
  right: 0;
  min-width: 200px;
  background: #0e1726;
  border: 1px solid var(--border-default);
  border-radius: var(--radius-md);
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.55), 0 4px 10px rgba(0, 0, 0, 0.35);
  padding: 6px;
  display: none;
  flex-direction: column;
  gap: 3px;
  z-index: 1000;
  animation: dropdownFadeIn 0.15s ease-out;
}

.top-dropdown-menu.show {
  display: flex;
}

.dropdown-item {
  width: 100%;
  justify-content: flex-start;
  text-align: left;
  padding: 7px 10px;
  font-size: var(--text-xs);
  border-radius: var(--radius-sm);
  background: transparent;
  border: 1px solid transparent;
  color: var(--text-secondary);
  transition: all var(--transition-fast);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  white-space: nowrap;
}

.dropdown-item:hover {
  background: rgba(255, 255, 255, 0.08);
  color: var(--text-main);
}

.dropdown-item.btn-sound.muted {
  border-color: rgba(239, 68, 68, 0.35);
  color: #fca5a5;
  background: rgba(239, 68, 68, 0.1);
}

.dropdown-item.btn-music.playing {
  background: rgba(16, 185, 129, 0.16);
  border-color: rgba(16, 185, 129, 0.45);
  color: #6ee7b7;
  font-weight: 700;
}

.dropdown-item.btn-random {
  color: #c084fc;
}
.dropdown-item.btn-random:hover {
  background: rgba(192, 132, 252, 0.12);
  color: #e9d5ff;
}

.dropdown-item.btn-about {
  color: var(--accent-sky);
}
.dropdown-item.btn-about:hover {
  background: rgba(56, 189, 248, 0.12);
  color: #fff;
}

.dropdown-divider {
  height: 1px;
  background: var(--border-subtle);
  margin: 4px 2px;
}

@keyframes dropdownFadeIn {
  from {
    opacity: 0;
    transform: translateY(-4px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ==========================================================================
   РОБОЧА СМУГА СТУДІЇ (МІСІЇ, ЗАНЯТТЯ, РОЗКЛАДКА ТА ПЕРЕВІРКА ДРУКУ)
   ========================================================================== */

.view-mode-bar {
  min-height: 40px;
  height: 40px;
  background: var(--bg2);
  border-bottom: 2px solid var(--surface2);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 16px;
  flex-shrink: 0;
  gap: 12px;
  z-index: 25;
}

.workspace-bar-left,
.workspace-bar-right {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

.workspace-bar-group {
  display: flex;
  align-items: center;
  gap: 4px;
}

.bar-separator {
  width: 1px;
  height: 18px;
  background: var(--border-subtle);
  margin: 0 4px;
  flex-shrink: 0;
}

.view-mode-group {
  display: flex;
  align-items: center;
  gap: 3px;
  background: var(--bg);
  padding: 2px 4px;
  border-radius: var(--r-pill);
  border: 2px solid var(--surface2);
}

.view-btn {
  background: transparent;
  color: var(--text-muted);
  border: 1px solid transparent;
  border-radius: var(--r-pill);
  padding: 3px 10px;
  font-size: var(--text-xs);
  font-weight: 700;
  transition: all var(--transition-fast);
  display: inline-flex;
  align-items: center;
  gap: 5px;
  white-space: nowrap;
  cursor: pointer;
  height: 26px;
  line-height: 1;
}

.view-btn:hover {
  color: var(--text-main);
  background: var(--surface);
}

.view-btn.active {
  background: var(--surface2);
  border-color: var(--cyan);
  color: #fff;
  box-shadow: 0 2px 8px rgba(0, 210, 255, 0.2);
}

.view-btn.btn-action {
  border-radius: var(--r-pill);
  padding: 3px 10px;
  font-size: var(--text-xs);
  height: 26px;
}

.view-btn.btn-missions-tab {
  border-radius: var(--r-pill);
  padding: 3px 12px;
  font-size: var(--text-xs);
  height: 26px;
}

.autosave-tag {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--text-dim);
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 2px 6px;
  background: rgba(255, 255, 255, 0.02);
  border-radius: var(--radius-xs);
  border: 1px solid transparent;
}

/* ==========================================================================
   ГОЛОВНИЙ РОБОЧИЙ ПРОСТІР
   ========================================================================== */

.workspace {
  flex: 1 1 0;
  min-height: 0;
  display: flex;
  overflow: hidden;
  position: relative;
  background: var(--bg);
}

/* Режими розкладки */
.workspace.mode-editor .sidebar {
  width: 100%;
  max-width: 100%;
  border-right: none;
}
.workspace.mode-editor .viewport-area {
  display: none;
}

.workspace.mode-viewport .sidebar {
  display: none;
}
.workspace.mode-viewport .viewport-area {
  width: 100%;
}

/* ==========================================================================
   ЛІВА ПАНЕЛЬ РЕДАКТОРА (САЙДБАР)
   ========================================================================== */

.sidebar {
  width: 440px;
  min-width: 380px;
  max-width: 520px;
  background-color: var(--bg-surface);
  border-right: 1px solid var(--border-default);
  overflow-y: auto;
  overflow-x: hidden;
  display: flex;
  flex-direction: column;
  padding: 12px 14px;
  gap: 12px;
  box-shadow: var(--shadow-sm);
  z-index: 10;
}

/* --- КОМПАКТНА КАРТКА МІСІЇ --- */
.mission-compact-card {
  background: var(--bg2);
  border: 2px solid var(--surface2);
  border-radius: var(--radius-md);
  padding: 10px 12px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  box-shadow: var(--shadow-sm);
}

.mission-compact-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.mission-cat-pill {
  font-size: var(--text-xs);
  font-weight: 700;
  color: var(--accent-gold);
  background: rgba(245, 158, 11, 0.1);
  border: 1px solid rgba(245, 158, 11, 0.22);
  padding: 2px 7px;
  border-radius: var(--radius-full);
}

.mission-compact-actions {
  display: flex;
  align-items: center;
  gap: 4px;
}

.mission-nav-btn {
  background: var(--bg-card);
  color: var(--text-secondary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xs);
  padding: 3px 8px;
  font-size: var(--text-xs);
  font-weight: 700;
  transition: all var(--transition-fast);
}

.mission-close-btn {
  color: var(--text-muted);
  padding: 3px 7px;
  font-size: 13px;
  font-weight: 700;
}

.mission-close-btn:hover {
  background: rgba(239, 68, 68, 0.18) !important;
  border-color: rgba(239, 68, 68, 0.4) !important;
  color: #ef4444 !important;
}

.mission-nav-btn:hover {
  background: var(--bg-card-hover);
  color: var(--text-main);
  border-color: var(--border-default);
}

.mission-small-btn {
  background: var(--bg-card);
  color: var(--text-secondary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xs);
  padding: 3px 8px;
  font-size: var(--text-xs);
  font-weight: 600;
  transition: all var(--transition-fast);
}

.mission-small-btn:hover {
  background: var(--bg-card-hover);
  color: var(--text-main);
  border-color: var(--border-default);
}

.mission-small-btn.highlight {
  background: rgba(245, 158, 11, 0.14);
  border-color: var(--accent-forge);
  color: var(--accent-gold);
}

.mission-compact-title-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.mission-compact-title-wrap {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
}

.mission-compact-title {
  font-size: var(--text-base);
  font-weight: 700;
  color: var(--text-main);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.mission-compact-meta {
  font-size: var(--text-xs);
  color: var(--text-muted);
}

.btn-mission-apply {
  background: var(--green);
  color: var(--on-green);
  font-size: var(--text-xs);
  font-weight: 700;
  padding: 5px 12px;
  border-radius: var(--radius-xs);
  transition: all var(--transition-fast);
  white-space: nowrap;
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.btn-mission-apply:hover {
  background: var(--green-dark);
  transform: translateY(-1px);
  box-shadow: 0 2px 8px rgba(16, 185, 129, 0.3);
}

.mission-compact-body {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding-top: 6px;
  border-top: 1px solid var(--border-subtle);
  transition: max-height var(--transition-normal);
}

.mission-compact-body.collapsed {
  display: none;
}

.mission-riddle-quote,
.mission-compact-card .mission-riddle-box {
  font-size: var(--text-xs);
  color: var(--accent-gold);
  background: rgba(245, 158, 11, 0.07);
  border-left: 3px solid var(--accent-forge);
  padding: 6px 10px;
  border-radius: 0 var(--radius-xs) var(--radius-xs) 0;
  font-style: italic;
  line-height: 1.4;
}

.mission-grades-box,
.mission-compact-card .mission-grades-row {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.mission-grade-tag,
.mission-compact-card .mission-grade-item {
  display: flex;
  align-items: baseline;
  gap: 6px;
  font-size: var(--text-xs);
  color: var(--text-secondary);
  line-height: 1.35;
}

.tag-badge {
  font-size: 10px;
  font-weight: 700;
  padding: 1px 5px;
  border-radius: var(--radius-xs);
  flex-shrink: 0;
}
.tag-23 { background: rgba(56, 189, 248, 0.15); color: #38bdf8; border: 1px solid rgba(56, 189, 248, 0.3); }
.tag-46 { background: rgba(168, 85, 247, 0.15); color: #c084fc; border: 1px solid rgba(168, 85, 247, 0.3); }

.mission-steps-scroll,
.mission-steps-mini {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.mission-step-pill {
  font-size: var(--text-xs);
  color: var(--text-secondary);
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xs);
  padding: 4px 8px;
  line-height: 1.3;
}
.mission-step-pill b {
  color: var(--text-main);
}

.mission-checklist-inline,
.mission-checklist-box {
  display: flex;
  flex-direction: column;
  gap: 5px;
  background: rgba(0, 0, 0, 0.2);
  padding: 6px 8px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-subtle);
}

.mission-checklist-title {
  font-size: var(--text-xs);
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 2px;
}

.chk-label,
.mission-check-row {
  display: flex;
  align-items: center;
  gap: 7px;
  font-size: var(--text-xs);
  color: var(--text-secondary);
  cursor: pointer;
}
.chk-label input[type="checkbox"],
.mission-check-row input[type="checkbox"] {
  accent-color: var(--accent-craft);
  width: 14px;
  height: 14px;
  cursor: pointer;
}

/* --- СЕКЦІЇ ГЕНЕРАТОРІВ (PANEL SECTIONS) --- */
.panel-section {
  display: none;
  flex-direction: column;
  gap: 12px;
}

.panel-section.active {
  display: flex;
}

/* ==========================================================================
   4-КРОКОВИЙ НАВІГАТОР РОБОЧОГО ПРОЦЕСУ (WORKFLOW STEPPER)
   ========================================================================== */

.workflow-stepper {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 4px;
  background: var(--bg2);
  border: 2px solid var(--surface2);
  border-radius: var(--radius-md);
  padding: 6px 8px;
  box-shadow: var(--shadow-sm);
  flex-shrink: 0;
}

.step-btn {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 5px;
  padding: 6px 4px;
  background: transparent;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  font-size: var(--text-xs);
  font-weight: 700;
  color: var(--text-muted);
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.step-btn:hover {
  background: var(--bg-card-hover);
  color: var(--text-main);
}

.step-btn.active {
  background: rgba(245, 158, 11, 0.15);
  border-color: rgba(245, 158, 11, 0.4);
  color: var(--accent-gold);
}

.step-btn.completed .step-num {
  background: rgba(16, 185, 129, 0.2);
  border-color: rgba(16, 185, 129, 0.4);
  color: #34d399;
}

.step-num {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid var(--border-subtle);
  font-size: 11px;
  font-weight: 800;
  color: var(--text-secondary);
  flex-shrink: 0;
  transition: all var(--transition-fast);
}

.step-btn.active .step-num {
  background: var(--accent-forge);
  border-color: var(--accent-forge);
  color: var(--on-yellow);
}

.step-arrow {
  color: var(--text-dim);
  font-size: 11px;
  user-select: none;
  flex-shrink: 0;
}

@keyframes btnPulseGlow {
  0% { transform: scale(1); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7); }
  50% { transform: scale(1.05); box-shadow: 0 0 0 8px rgba(16, 185, 129, 0); }
  100% { transform: scale(1); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0); }
}

.btn-export.pulse-highlight {
  animation: btnPulseGlow 0.7s ease 3;
}

.card,
.panel-card {
  background: var(--card);
  border: 2px solid var(--surface2);
  border-radius: var(--radius-md);
  padding: 12px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  box-shadow: var(--shadow-sm);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.card-header,
.panel-card-title {
  font-size: var(--text-base);
  font-weight: 700;
  color: var(--text-main);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.card-header-actions {
  display: flex;
  align-items: center;
  gap: 6px;
}

/* Згортальні картки додаткових налаштувань */
details.collapsible-card > summary.card-header {
  cursor: pointer;
  list-style: none;
  user-select: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

details.collapsible-card > summary.card-header::-webkit-details-marker {
  display: none;
}

details.collapsible-card > summary.card-header::after {
  content: '▾';
  font-size: 14px;
  color: var(--text-muted);
  transition: transform var(--transition-fast);
  margin-left: auto;
  padding-left: 8px;
}

details.collapsible-card[open] > summary.card-header::after {
  transform: rotate(180deg);
}

.collapsible-card-content {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 4px;
  padding-top: 8px;
  border-top: 1px solid var(--border-subtle);
}

.printer-safe-tip {
  background: rgba(2, 132, 199, 0.12);
  border: 1px solid rgba(56, 189, 248, 0.28);
  border-radius: var(--radius-md);
  padding: 10px 12px;
  font-size: var(--text-xs);
  color: #bae6fd;
  line-height: 1.45;
  box-shadow: var(--shadow-sm);
}

.printer-safe-tip b {
  color: #fff;
}


/* ==========================================================================
   ПІКСЕЛЬ-РЕДАКТОР 16×16 (МАЙНКРАФТ-КУЗНЯ)
   ========================================================================== */

.pixel-grid-wrapper {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  background: var(--bg-input);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-md);
  padding: 10px;
}

#mc-pixel-grid,
.pixel-grid,
.pixel-grid-container {
  display: grid !important;
  grid-template-columns: repeat(16, 1fr) !important;
  grid-template-rows: repeat(16, 1fr) !important;
  gap: 2px;
  width: 100%;
  max-width: 320px;
  aspect-ratio: 1 / 1;
  background: var(--bg);
  border: 2px solid var(--surface2);
  border-radius: var(--radius-sm);
  padding: 3px;
  box-sizing: border-box;
  touch-action: none;
}

.pixel-cell {
  background: var(--bg2);
  border-radius: 3px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 800;
  color: rgba(255, 255, 255, 0.95);
  cursor: crosshair;
  transition: transform 60ms ease, background-color 100ms ease;
  position: relative;
  user-select: none;
  -webkit-user-select: none;
  aspect-ratio: 1 / 1;
}

.pixel-cell:hover {
  outline: 1.5px solid var(--accent-sky);
  outline-offset: -1px;
  z-index: 2;
}

/* Розмітка симетрії по центральних осях (між 7 та 8 клітинками) */
.pixel-cell.axis-x {
  border-bottom: 1.5px dashed rgba(255, 255, 255, 0.22);
}
.pixel-cell.axis-y {
  border-right: 1.5px dashed rgba(255, 255, 255, 0.22);
}

/* Палітра пензлів 1..4 та Гумка */
.brush-bar,
.brush-palette {
  display: flex;
  gap: 6px;
  width: 100%;
  justify-content: space-between;
}

.brush-btn {
  flex: 1;
  min-width: 0;
  min-height: 40px;
  background: var(--bg2);
  border: 2px solid var(--surface2);
  border-radius: var(--radius-sm);
  padding: 8px 6px;
  display: flex;
  flex-direction: row;
  align-items: center;
  justify-content: center;
  gap: 5px;
  font-size: var(--text-sm);
  color: var(--text-secondary);
  font-weight: 600;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.brush-btn:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-hover);
}

.brush-btn.active {
  border-color: var(--accent-forge);
  background: var(--surface2);
  box-shadow: 0 0 0 1px var(--accent-forge);
  color: #fff;
  font-weight: 700;
}

.brush-color-dot {
  width: 14px;
  height: 14px;
  border-radius: 3px;
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.brush-dot-l1 { background: #5c3a21; }
.brush-dot-l2 { background: #0284c7; }
.brush-dot-l3 { background: #38bdf8; }
.brush-dot-l4 { background: #e0f2fe; }
.brush-dot-eraser { background: var(--bg2); border-style: dashed; }

.brush-height-label {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--text-muted);
}

/* Індикатор зв'язності деталей */
.connectivity-pill {
  padding: 6px 14px;
  border-radius: var(--r-pill);
  font-size: var(--text-xs);
  font-weight: 800;
  display: flex;
  align-items: center;
  gap: 6px;
  background: rgba(0, 210, 106, 0.16);
  border: 2px solid var(--green);
  color: #86efac;
  transition: all var(--transition-fast);
}

.connectivity-pill.warn {
  background: rgba(255, 195, 18, 0.16);
  border-color: var(--yellow);
  color: #ffc312;
}

.connectivity-pill.danger {
  background: rgba(255, 71, 87, 0.18);
  border-color: var(--red);
  color: #fca5a5;
}

.connectivity-pill.bridged {
  background: rgba(30, 144, 255, 0.16);
  border-color: var(--blue);
  color: #7dd3fc;
}

/* Пресети Майнкрафт та Ілюзій */
.preset-grid,
.presets-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
  gap: 6px;
}

.preset-btn,
.preset-chip-btn {
  background: var(--bg2);
  border: 2px solid var(--surface2);
  border-radius: var(--radius-sm);
  min-height: 38px;
  padding: 7px 10px;
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--text-secondary);
  text-align: left;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: all var(--transition-fast);
  cursor: pointer;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.preset-btn:hover,
.preset-chip-btn:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-default);
  color: var(--text-main);
  transform: translateY(-1px);
}

.preset-btn.active,
.preset-chip-btn.active {
  background: var(--bg-card-elevated);
  border-color: var(--accent-forge);
  color: #fff;
  font-weight: 700;
  box-shadow: 0 0 8px rgba(245, 158, 11, 0.25);
}

.preset-mini-btn {
  border-left: 2px solid var(--accent-gold);
}

/* Панель символів та дрібні кнопки */
.sym-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
}

.sym-btn {
  background: var(--bg2);
  border: 2px solid var(--surface2);
  border-radius: var(--radius-sm);
  padding: 4px 8px;
  font-size: var(--text-xs);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.sym-btn:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-default);
  color: var(--text-main);
}

.btn-subtle {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 3px 8px;
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--accent-gold);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn-subtle:hover {
  background: rgba(245, 158, 11, 0.15);
  border-color: var(--accent-forge);
  color: #fff;
}


/* ==========================================================================
   КОНТРОЛИ ТА ВВЕДЕННЯ (SLIDERS, INPUTS, SELECTS)
   ========================================================================== */

.control-row {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.control-label {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: var(--text-sm);
  color: var(--text-secondary);
  font-weight: 600;
}

.control-val,
.control-val-badge {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--accent-sky);
  background: rgba(56, 189, 248, 0.1);
  padding: 1px 6px;
  border-radius: var(--radius-xs);
  border: 1px solid rgba(56, 189, 248, 0.2);
}


input[type="range"] {
  width: 100%;
  height: 6px;
  background: var(--bg2);
  border-radius: var(--radius-full);
  outline: none;
  border: 2px solid var(--surface2);
  appearance: none;
  cursor: pointer;
}

input[type="range"]::-webkit-slider-thumb {
  appearance: none;
  width: 16px;
  height: 16px;
  border-radius: var(--r-pill);
  background: var(--cyan);
  border: 2px solid var(--surface);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-fast);
}

input[type="range"]::-webkit-slider-thumb:hover {
  transform: scale(1.18);
  background: #7dd3fc;
}

select, input[type="text"] {
  background: var(--bg2);
  border: 2px solid var(--surface2);
  border-radius: var(--r-sm);
  padding: 7px 10px;
  font-size: var(--text-sm);
  color: var(--text-main);
  outline: none;
  transition: border-color var(--transition-fast);
}

select:focus, input[type="text"]:focus {
  border-color: var(--border-focus);
}

.checkbox-row {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  font-size: var(--text-xs);
  color: var(--text-secondary);
  cursor: pointer;
  line-height: 1.35;
}

.checkbox-row input[type="checkbox"] {
  margin-top: 2px;
  accent-color: var(--accent-craft);
}

/* ==========================================================================
   3D СЦЕНА ТА ПЛАВАЮЧИЙ HUD (VIEWPORT OVERHAUL)
   ========================================================================== */

.viewport-area {
  flex: 1 1 0;
  min-width: 0;
  min-height: 0;
  position: relative;
  background: var(--bg);
  overflow: hidden;
}

#viewport-container {
  width: 100%;
  height: 100%;
  position: absolute;
  top: 0;
  left: 0;
  outline: none;
}

#viewport-container canvas {
  display: block;
  width: 100% !important;
  height: 100% !important;
}

/* --- ВЕРХНІЙ HUD (GLASSMORPHISM / FROSTED SLATE) --- */
.viewport-hud-top {
  position: absolute;
  top: 12px;
  left: 12px;
  right: 12px;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 12px;
  pointer-events: none;
  z-index: 15;
}

.hud-badge {
  background: rgba(15, 52, 96, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 2px solid var(--surface2);
  border-radius: var(--radius-md);
  padding: 8px 12px;
  box-shadow: var(--shadow-md);
  pointer-events: auto;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

#model-dimensions-badge {
  min-width: 240px;
}

.hud-dim-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.hud-status-chip {
  font-size: var(--text-xs);
  font-weight: 700;
  padding: 1px 7px;
  border-radius: var(--radius-full);
}
.chip-ok { background: var(--status-ok-bg); color: var(--status-ok); border: 1px solid rgba(34, 197, 94, 0.3); }
.chip-warn { background: var(--status-warn-bg); color: var(--status-warn); border: 1px solid rgba(245, 158, 11, 0.3); }
.chip-danger { background: var(--status-danger-bg); color: var(--status-danger); border: 1px solid rgba(239, 68, 68, 0.3); }

.hud-flat-chip {
  font-size: var(--text-xs);
  color: var(--accent-sky);
  font-family: var(--font-mono);
}

.hud-dim-primary {
  font-size: var(--text-lg);
  font-weight: 800;
  color: var(--text-main);
  letter-spacing: -0.3px;
}
.hud-dim-unit {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--text-muted);
}

.hud-dim-meta {
  font-size: var(--text-xs);
  color: var(--text-secondary);
}

/* Статус верифікації для слайсера */
.verification-badge {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.verification-badge.status-generated {
  border-color: rgba(56, 189, 248, 0.3);
}
.verification-badge.status-sliced {
  border-color: rgba(245, 158, 11, 0.4);
}
.verification-badge.status-printed {
  border-color: rgba(34, 197, 94, 0.45);
}

.hud-notes-toggle {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xs);
  color: var(--text-secondary);
  font-size: var(--text-xs);
  font-weight: 600;
  padding: 2px 7px;
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.hud-notes-toggle:hover,
.hud-notes-toggle.active {
  background: rgba(255, 255, 255, 0.12);
  color: var(--text-main);
  border-color: var(--border-default);
}

.slicer-notes-panel {
  display: flex;
  flex-direction: column;
  gap: 5px;
  margin-top: 2px;
  padding-top: 6px;
  border-top: 1px solid var(--border-subtle);
}

.slicer-note-row {
  width: 100%;
}

.verification-row {
  display: flex;
  align-items: center;
  gap: 6px;
}

.geom-check-pill {
  font-size: var(--text-xs);
  font-weight: 700;
  padding: 2px 7px;
  border-radius: var(--radius-xs);
  background: rgba(2, 132, 199, 0.15);
  color: #38bdf8;
  border: 1px solid rgba(2, 132, 199, 0.3);
  white-space: nowrap;
}
.geom-check-pill.warn { background: var(--status-warn-bg); color: var(--status-warn); border-color: rgba(245, 158, 11, 0.3); }
.geom-check-pill.danger { background: var(--status-danger-bg); color: var(--status-danger); border-color: rgba(239, 68, 68, 0.3); }

.hud-select {
  background: var(--bg2);
  border: 2px solid var(--surface2);
  border-radius: var(--radius-xs);
  padding: 4px 8px;
  font-size: var(--text-xs);
  color: var(--text-main);
  flex: 1;
}

.hud-input {
  background: var(--bg2);
  border: 2px solid var(--surface2);
  border-radius: var(--radius-xs);
  padding: 4px 8px;
  font-size: var(--text-xs);
  color: var(--text-main);
  width: 100%;
}

/* --- НИЖНІЙ HUD (РАКУРСИ КАМЕРИ ТА КОНТЕКСТНІ ДІЇ) --- */
.viewport-hud-bottom {
  position: absolute;
  bottom: 12px;
  left: 12px;
  right: 12px;
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  pointer-events: none;
  z-index: 15;
}

.camera-bar {
  background: rgba(15, 52, 96, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 2px solid var(--surface2);
  border-radius: var(--radius-md);
  padding: 4px;
  display: flex;
  align-items: center;
  gap: 4px;
  box-shadow: var(--shadow-md);
  pointer-events: auto;
}

.cam-btn {
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  padding: 6px 10px;
  font-size: var(--text-xs);
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 5px;
  transition: all var(--transition-fast);
}

.cam-btn:hover {
  background: rgba(255, 255, 255, 0.08);
  color: var(--text-main);
}

.cam-btn.active-cam {
  background: var(--bg-card);
  border-color: var(--border-default);
  color: var(--text-main);
}

.btn-ortho-toggle.active-cam {
  background: rgba(56, 189, 248, 0.2) !important;
  border-color: #38bdf8 !important;
  color: #38bdf8 !important;
  box-shadow: 0 0 10px rgba(56, 189, 248, 0.3);
  font-weight: 700;
}

.mono-hud-btn {
  border-left: 1px solid var(--border-default) !important;
  margin-left: 2px;
}

.mono-color-input {
  width: 24px;
  height: 24px;
  border-radius: var(--radius-xs);
  border: 1px solid var(--border-default);
  background: transparent;
  cursor: pointer;
  padding: 0;
}

.context-action-bar {
  display: flex;
  gap: 6px;
  pointer-events: auto;
}

.btn-big-demo {
  background: var(--green);
  color: var(--on-green);
  font-size: var(--text-sm);
  font-weight: 800;
  padding: 8px 16px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  transition: all var(--transition-fast);
}
.btn-big-demo:hover {
  background: var(--green-dark);
  transform: translateY(-2px);
}

.version-corner-badge {
  background: rgba(15, 52, 96, 0.85);
  backdrop-filter: blur(12px);
  border: 2px solid var(--surface2);
  color: var(--text2);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  padding: 4px 10px;
  border-radius: var(--r-pill);
  pointer-events: auto;
}

/* ==========================================================================
   МОДАЛЬНІ ВІКНА (MODALS SYSTEM)
   ========================================================================== */

.modal-backdrop,
.missions-modal-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(4, 7, 14, 0.78);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  padding: 20px;
}

.modal-window {
  background: var(--surface);
  border: 3px solid var(--surface2);
  border-radius: var(--r-lg);
  box-shadow: var(--shadow-modal);
  display: flex;
  flex-direction: column;
  max-height: 90vh;
  overflow: hidden;
  animation: modalEnter 180ms var(--ease-spring);
}

@keyframes modalEnter {
  from { opacity: 0; transform: scale(0.96) translateY(8px); }
  to { opacity: 1; transform: scale(1) translateY(0); }
}

.modal-header {
  padding: 16px 20px;
  border-bottom: 2px solid var(--surface2);
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--bg2);
}

.modal-header h2 {
  font-size: var(--text-xl);
  font-weight: 800;
  color: var(--text-main);
}

.modal-subtitle {
  font-size: var(--text-xs);
  color: var(--text-muted);
  margin-top: 2px;
}

.modal-close-btn {
  background: var(--surface2);
  color: #fff;
  font-size: 18px;
  width: 36px;
  height: 36px;
  border-radius: var(--r-pill);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
  cursor: pointer;
}

.modal-close-btn:hover {
  background: var(--red);
  color: #fff;
  transform: scale(1.1);
}

.modal-footer {
  padding: 12px 20px;
  border-top: 2px solid var(--surface2);
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 10px;
  background: var(--bg2);
}

/* --- КАТАЛОГ 12 МІСІЙ ГУРТКА --- */
.missions-modal-window {
  width: 1040px;
  max-width: 95vw;
  max-height: 88vh;
  background: var(--surface);
  border: 3px solid var(--surface2);
  border-radius: var(--r-lg);
  box-shadow: var(--shadow-modal);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  animation: modalEnter 180ms var(--ease-spring);
}

.missions-modal-header {
  padding: 16px 20px;
  border-bottom: 2px solid var(--surface2);
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--bg2);
  gap: 16px;
  flex-shrink: 0;
}

.missions-modal-header h2 {
  font-size: var(--text-xl);
  font-weight: 800;
  color: var(--text-main);
}

.missions-modal-subtitle {
  font-size: var(--text-xs);
  color: var(--text-muted);
  margin-top: 3px;
  line-height: 1.4;
}

.missions-close-btn {
  background: var(--surface2);
  color: #fff;
  font-size: 18px;
  width: 36px;
  height: 36px;
  border: 2px solid var(--surface2);
  border-radius: var(--r-pill);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-fast);
  flex-shrink: 0;
}

.missions-close-btn:hover {
  background: var(--red);
  border-color: var(--red);
  color: #fff;
  transform: scale(1.1);
}

.missions-filter-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  background: var(--bg2);
  border-bottom: 2px solid var(--surface2);
  overflow-x: auto;
  flex-shrink: 0;
}

.missions-filter-btn,
.mission-filter-btn,
.filter-chip {
  background: var(--card);
  color: var(--text2);
  border: 2px solid var(--surface2);
  border-radius: var(--r-pill);
  padding: 6px 14px;
  font-size: var(--text-xs);
  font-weight: 700;
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.missions-filter-btn:hover,
.mission-filter-btn:hover,
.filter-chip:hover {
  background: var(--card-hover);
  color: var(--text);
  border-color: var(--yellow);
  transform: translateY(-2px);
}

.missions-filter-btn.active,
.mission-filter-btn.active,
.filter-chip.active {
  background: var(--green);
  border-color: transparent;
  color: var(--on-green);
  font-weight: 900;
  box-shadow: var(--shadow-glow-green);
}

.missions-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(290px, 1fr));
  gap: 14px;
  padding: 16px 20px;
  overflow-y: auto;
  flex: 1;
}

.mission-card {
  background: var(--card);
  border: 3px solid transparent;
  border-radius: var(--r-md);
  padding: 14px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 10px;
  transition: all 0.3s var(--ease-smooth);
}

.mission-card-inner {
  display: flex;
  flex-direction: column;
  flex: 1;
}

.mission-card:hover {
  border-color: var(--green);
  transform: translateY(-8px) scale(1.02);
  background: var(--card-hover);
  box-shadow: 0 12px 36px rgba(0, 210, 106, 0.25);
}

.mission-card.active-mission {
  border-color: var(--green);
  box-shadow: 0 0 16px rgba(0, 210, 106, 0.35);
}

.mission-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: var(--text-xs);
  margin-bottom: 6px;
  gap: 6px;
}

.mission-card-num {
  font-weight: 800;
  color: var(--yellow);
}

.mission-card-difficulty {
  font-size: 11px;
  font-weight: 800;
  background: rgba(255, 195, 18, 0.16);
  border: 2px solid var(--yellow);
  color: #ffc312;
  padding: 2px 8px;
  border-radius: var(--r-pill);
  white-space: nowrap;
}

.mission-card-size {
  color: var(--text-muted);
  font-weight: 600;
}

.mission-card-title {
  font-size: var(--text-base);
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 6px;
}

.mission-riddle-box {
  font-size: var(--text-xs);
  color: var(--accent-gold);
  font-style: italic;
  margin-bottom: 8px;
  line-height: 1.35;
}

.mission-grades-row {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-bottom: 8px;
}

.mission-grade-item {
  font-size: var(--text-xs);
  color: var(--text-secondary);
  line-height: 1.3;
}

.grade-tag {
  font-weight: 700;
  font-size: 10px;
  padding: 1px 5px;
  border-radius: var(--radius-xs);
  margin-right: 5px;
}
.grade-23 { background: rgba(56, 189, 248, 0.15); color: #38bdf8; }
.grade-46 { background: rgba(168, 85, 247, 0.15); color: #c084fc; }

.mission-card-details {
  margin-top: 6px;
  margin-bottom: 8px;
  border: 2px solid var(--surface2);
  border-radius: var(--r-md);
  background: var(--bg2);
  overflow: hidden;
}

.mission-details-summary {
  cursor: pointer;
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--accent-sky);
  padding: 6px 8px;
  user-select: none;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.mission-details-summary::-webkit-details-marker {
  display: none;
}

.mission-card-details[open] .mission-details-summary {
  border-bottom: 1px solid var(--border-subtle);
  color: #fff;
}

.mission-card-details .mission-card-steps,
.mission-card-details .mission-card-checklist {
  padding: 8px;
  margin-bottom: 0;
}

.mission-card-steps {
  font-size: var(--text-xs);
  color: var(--text-muted);
  display: flex;
  flex-direction: column;
  gap: 3px;
  margin-bottom: 8px;
}

.mission-card-checklist {
  font-size: var(--text-xs);
  color: var(--text-secondary);
  background: rgba(0, 0, 0, 0.2);
  padding: 6px 8px;
  border-radius: var(--radius-xs);
  margin-bottom: 10px;
}
.checklist-title {
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 3px;
}

.mission-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 2px solid var(--surface2);
  padding-top: 10px;
}

.mission-gen-label {
  font-size: var(--text-xs);
  color: var(--text-muted);
}

.btn-start-mission {
  background: var(--green);
  color: var(--on-green);
  font-size: var(--text-xs);
  font-weight: 800;
  min-height: 36px;
  padding: 6px 16px;
  border-radius: var(--r-pill);
  border: 2px solid var(--green);
  box-shadow: var(--shadow-glow-green);
  transition: all var(--transition-fast);
  cursor: pointer;
}

.btn-start-mission:hover {
  background: var(--green-dark);
  color: var(--on-green);
  border-color: var(--green-dark);
  transform: translateY(-2px);
  box-shadow: 0 4px 18px rgba(0, 210, 106, 0.5);
}

.btn-start-mission:active {
  transform: scale(0.96);
}

.missions-empty-state {
  grid-column: 1 / -1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 48px 20px;
  text-align: center;
  color: var(--text-muted);
  gap: 12px;
}

.missions-empty-state .empty-icon {
  font-size: 40px;
}

.missions-count-badge {
  font-size: var(--text-xs);
  font-weight: 700;
  color: var(--accent-gold);
  background: rgba(245, 158, 11, 0.12);
  border: 1px solid rgba(245, 158, 11, 0.3);
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  white-space: nowrap;
}

/* ==========================================================================
   МОДАЛКА ПОРІВНЯННЯ V1 ↔ V2 (АНАЛІТИЧНИЙ ЕКРАН)
   ========================================================================== */

.compare-window {
  width: 860px;
  max-width: 95vw;
}

.compare-summary-banner {
  padding: 12px 20px;
  border-bottom: 2px solid var(--surface2);
  background: var(--bg2);
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.summary-headline {
  font-size: var(--text-sm);
  color: var(--text-main);
  line-height: 1.4;
}

.summary-chips-row {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.delta-chip {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  padding: 2px 8px;
  border-radius: var(--radius-full);
  font-weight: 700;
}
.chip-success { background: rgba(34, 197, 94, 0.18); color: #4ade80; border: 1px solid rgba(34, 197, 94, 0.35); }
.chip-good { background: rgba(56, 189, 248, 0.15); color: #38bdf8; border: 1px solid rgba(56, 189, 248, 0.3); }
.chip-warn { background: rgba(245, 158, 11, 0.15); color: var(--accent-gold); border: 1px solid rgba(245, 158, 11, 0.35); }
.chip-neutral { background: rgba(255, 255, 255, 0.06); color: var(--text-secondary); border: 1px solid var(--border-default); }

.compare-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  padding: 16px 20px;
  overflow-y: auto;
}

.compare-col {
  background: var(--bg-card);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-md);
  padding: 12px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.compare-col.v1-col {
  border-color: rgba(245, 158, 11, 0.35);
}

.compare-col.v2-col {
  border-color: rgba(16, 185, 129, 0.35);
}

.compare-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.version-tag {
  font-size: var(--text-xs);
  font-weight: 800;
  padding: 2px 8px;
  border-radius: var(--radius-xs);
}
.v1-tag { background: rgba(245, 158, 11, 0.15); color: var(--accent-gold); border: 1px solid rgba(245, 158, 11, 0.3); }
.v2-tag { background: rgba(16, 185, 129, 0.15); color: #6ee7b7; border: 1px solid rgba(16, 185, 129, 0.3); }

.compare-time {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--text-muted);
}

.compare-img-wrap {
  background: var(--bg2);
  border: 2px solid var(--surface2);
  border-radius: var(--r-md);
  aspect-ratio: 4 / 3;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.compare-preview-img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.compare-metrics-list {
  display: flex;
  flex-direction: column;
  gap: 5px;
  font-size: var(--text-xs);
}

.metric-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: var(--text-secondary);
}
.metric-row b {
  color: var(--text-main);
}
.metric-good { color: var(--status-ok) !important; }
.metric-bad { color: var(--status-danger) !important; }

.reflection-box {
  margin: 0 20px 16px;
  background: var(--bg2);
  border: 2px solid var(--surface2);
  border-radius: var(--r-md);
  padding: 12px 14px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.reflection-box h4 {
  font-size: var(--text-sm);
  color: var(--accent-gold);
}

.reflection-box ul {
  padding-left: 18px;
  font-size: var(--text-xs);
  color: var(--text-secondary);
  line-height: 1.4;
}

/* ==========================================================================
   МОДАЛКА ПАСПОРТА ДЕТАЛІ ДЛЯ ЧЕРГИ ДРУКУ (ANYCUBIC I3 MEGA)
   ========================================================================== */

.print-card-window {
  width: 880px;
  max-width: 95vw;
}

.print-card-toolbar {
  padding: 10px 20px;
  background: var(--bg2);
  border-bottom: 2px solid var(--surface2);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  flex-wrap: wrap;
}

.pair-code-inline {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: var(--text-xs);
  color: var(--text-secondary);
}

.passport-card-paper {
  background: #ffffff;
  color: #1a1a2e;
  padding: 24px;
  overflow-y: auto;
  border: 2px solid #1a1a2e;
  margin: 16px 20px;
  border-radius: var(--radius-sm);
  display: flex;
  flex-direction: column;
  gap: 16px;
  font-family: var(--font-sans);
}

.passport-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 2px solid #1a1a2e;
  padding-bottom: 12px;
}

.passport-logo {
  display: flex;
  align-items: center;
  gap: 10px;
}

.passport-logo .logo-icon {
  font-size: 28px;
}

.passport-studio-name {
  font-size: 11px;
  font-weight: 800;
  color: #64748b;
  letter-spacing: 0.5px;
}

.passport-doc-title {
  font-size: 17px;
  font-weight: 900;
  color: #1a1a2e;
  letter-spacing: -0.2px;
}

.passport-meta-box {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  font-size: 12px;
  color: #334155;
  gap: 2px;
}

.passport-body {
  display: grid;
  grid-template-columns: 200px 1fr 240px;
  gap: 16px;
}

.passport-left-col {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.passport-mid-col,
.passport-right-col {
  display: flex;
  flex-direction: column;
  gap: 8px;
}


.passport-img-box {
  background: #f8fafc;
  border: 1px solid #cbd5e1;
  border-radius: var(--radius-xs);
  aspect-ratio: 1 / 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  padding: 6px;
}

.passport-preview-img {
  max-width: 100%;
  max-height: 140px;
  object-fit: contain;
}

.passport-stl-name {
  font-family: var(--font-mono);
  font-size: 10px;
  color: #64748b;
  text-align: center;
  word-break: break-all;
  margin-top: 4px;
}

.passport-mission-info {
  font-size: 11.5px;
  color: #334155;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.passport-version-row {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 4px;
}

.passport-section-title {
  font-size: 12px;
  font-weight: 800;
  text-transform: uppercase;
  color: #0284c7;
  border-bottom: 1.5px solid #0284c7;
  padding-bottom: 3px;
  margin-bottom: 8px;
}

.passport-specs-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 11.5px;
  color: #334155;
}

.passport-specs-table td {
  padding: 4px 0;
  border-bottom: 1px dashed #e2e8f0;
}

.passport-specs-table td:last-child {
  text-align: right;
}

.badge-conn {
  font-weight: 700;
  color: #047857;
}

.passport-checklist {
  display: flex;
  flex-direction: column;
  gap: 5px;
  font-size: 11px;
  color: #334155;
}

.passport-signatures {
  display: flex;
  justify-content: space-between;
  margin-top: 14px;
  font-size: 11px;
  color: #64748b;
}

.teacher-fields-box {
  background: #f8fafc;
  border: 1px solid #cbd5e1;
  border-radius: var(--radius-xs);
  padding: 10px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  font-size: 11px;
}

.t-field {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.t-label {
  font-weight: 700;
  color: #475569;
}

.t-line {
  color: #1a1a2e;
}

.passport-cut-line {
  border-top: 1px dashed #94a3b8;
  text-align: center;
  margin-top: 8px;
  padding-top: 6px;
  font-size: 10px;
  color: #94a3b8;
}

/* ==========================================================================
   АДАПТИВНІСТЬ ТА ШКІЛЬНІ ЕКРАНИ
   ========================================================================== */

/* 1. Шкільний проєктор / Desktop: 1920 × 1080 */
@media (min-width: 1600px) {
  .sidebar {
    width: 480px;
    padding: 16px 20px;
  }
  .brand-title h1 {
    font-size: 17px;
  }
  .gen-tab-btn {
    padding: 8px 14px;
    font-size: var(--text-base);
  }
}

/* 2. Великі лептопи та планшети у ландшафті: < 1550px */
@media (max-width: 1550px) {
  .brand-subtitle {
    display: none;
  }
  .about-pill-btn {
    display: none;
  }
  .gen-tab-btn {
    padding: 6px 10px;
    font-size: var(--text-xs);
  }
  .btn-action {
    padding: 5px 8px;
    font-size: var(--text-xs);
  }
}

/* 3. Типовий ноутбук учня/вчителя: 1366 × 768 */
@media (max-width: 1366px) {
  .topbar {
    padding: 0 12px;
    gap: 8px;
    height: 48px;
    min-height: 48px;
  }
  .brand-title h1 {
    font-size: 13.5px;
  }
  .sidebar {
    width: 380px;
    min-width: 330px;
  }
  .gen-tab-btn {
    padding: 5px 8px;
    font-size: 11.5px;
    gap: 4px;
  }
  .top-action-group {
    padding: 2px 3px;
    gap: 2px;
  }
  .btn-action {
    padding: 4px 7px;
    font-size: 11.5px;
    gap: 4px;
  }
  .top-actions {
    gap: 4px;
  }
  .view-mode-bar {
    padding: 0 12px;
  }
  .view-btn {
    padding: 3px 7px;
    font-size: 11.5px;
  }
}

/* 4. Планшет / Інтерактивна дошка / Вузьке вікно: <= 1120px */
@media (max-width: 1120px) {
  .topbar {
    height: 48px;
    min-height: 48px;
    padding: 0 10px;
    gap: 6px;
  }
  .brand {
    flex-shrink: 0;
  }
  .brand-title h1 {
    font-size: 12.5px;
  }
  .gen-tab-btn {
    padding: 4px 6px;
    font-size: 11px;
    gap: 3px;
  }
  .btn-action {
    padding: 4px 6px;
    font-size: 11px;
    gap: 3px;
  }
  .top-actions {
    gap: 3px;
  }
  .view-mode-bar {
    overflow-x: auto;
    overflow-y: hidden;
    padding: 0 10px;
    gap: 6px;
  }
  .sidebar {
    width: 360px;
    min-width: 320px;
  }
  .passport-body {
    grid-template-columns: 1fr;
  }
}

/* 5. Мобільний огляд: 390 × 844 */
@media (max-width: 768px) {
  .topbar {
    flex-direction: column;
    align-items: stretch;
    height: auto;
    min-height: 48px;
    padding: 8px;
    gap: 8px;
  }
  .brand {
    justify-content: space-between;
    width: 100%;
  }
  .gen-tabs {
    width: 100%;
    overflow-x: auto;
    justify-content: flex-start;
    padding: 4px;
  }
  .top-actions {
    overflow-x: visible;
    width: 100%;
    flex-wrap: wrap;
    justify-content: flex-start;
    gap: 4px;
  }
  .view-mode-bar {
    overflow-x: auto;
    overflow-y: hidden;
    padding: 4px 8px;
    height: auto;
    min-height: 38px;
    flex-wrap: wrap;
  }
  .workspace {
    flex-direction: column;
    overflow-y: auto;
  }
  .sidebar {
    width: 100% !important;
    min-width: 0 !important;
    max-width: 100% !important;
    border-right: none;
    border-bottom: 1px solid var(--border-default);
  }
  .viewport-area {
    min-height: 380px;
    height: 420px;
    width: 100%;
  }
  .compare-grid {
    grid-template-columns: 1fr;
  }
  .viewport-hud-top {
    flex-direction: column;
    right: 8px;
    left: 8px;
  }
  .viewport-hud-bottom {
    flex-direction: column;
    align-items: stretch;
    gap: 8px;
    left: 8px;
    right: 8px;
  }
}

/* ==========================================================================
   ДРУК (PRINT STYLES FOR WINDOW.PRINT)
   ========================================================================== */
.catalog-search-row { display: flex; gap: 12px; flex-wrap: wrap; padding: 8px 0; }
[hidden] { display: none !important; }
.catalog-search-row label { flex: 1; min-width: 180px; }
.catalog-search-row input, .catalog-search-row select { width: 100%; margin-top: 4px; }
.demo-result { max-width: 240px; font-size: 11px; color: #e2e8f0; }
#physics-action-bar { flex-wrap: wrap; max-width: 100%; }
#il-design, #ph-design, #mob-design { width: 100%; margin: 6px 0; }

/* ==========================================================================
   ПРО ПРОЄКТ ТА АВТОРА (ABOUT MODAL & BADGE)
   ========================================================================== */
.btn-about {
  background: rgba(16, 185, 129, 0.15);
  color: #6ee7b7;
  border: 1px solid rgba(16, 185, 129, 0.4);
  font-weight: 700;
}
.btn-about:hover {
  background: rgba(16, 185, 129, 0.3);
  color: #a7f3d0;
  border-color: #34d399;
}

.about-pill-btn {
  background: rgba(16, 185, 129, 0.15);
  border: 1px solid rgba(52, 211, 153, 0.4);
  color: #6ee7b7;
  font-size: 11px;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: var(--radius-xs);
  cursor: pointer;
  transition: all var(--transition-fast);
  display: inline-flex;
  align-items: center;
  gap: 3px;
}
.about-pill-btn:hover {
  background: rgba(16, 185, 129, 0.35);
  color: #ffffff;
  border-color: #34d399;
  transform: translateY(-1px);
}

.version-corner-group {
  display: flex;
  align-items: center;
  gap: 8px;
}

.author-corner-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background: rgba(15, 52, 96, 0.85);
  border: 1px solid rgba(52, 211, 153, 0.3);
  color: #a7f3d0;
  text-decoration: none;
  font-size: 11px;
  font-weight: 600;
  padding: 3px 8px;
  border-radius: var(--radius-xs);
  backdrop-filter: blur(4px);
  transition: all var(--transition-fast);
}
.author-corner-badge:hover {
  background: rgba(16, 185, 129, 0.25);
  border-color: #34d399;
  color: #ffffff;
  transform: translateY(-1px);
}

.about-modal-window {
  width: 680px;
  max-width: 95vw;
}

.about-modal-body {
  padding: 16px 20px 24px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.about-section {
  background: var(--card);
  border: 2px solid var(--surface2);
  border-radius: var(--radius-md);
  padding: 16px 20px;
}
.about-section h3 {
  font-size: 15px;
  color: var(--text-main);
  margin-bottom: 8px;
}
.about-section p {
  font-size: 13px;
  line-height: 1.6;
  color: var(--text-secondary);
  margin-bottom: 8px;
}
.about-section p:last-child {
  margin-bottom: 0;
}

.author-card {
  border: 2px solid var(--surface2);
  background: var(--card);
}
.author-card-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}
.author-avatar-badge {
  font-size: 32px;
  line-height: 1;
}
.author-name {
  font-size: 17px !important;
  color: #34d399 !important;
  margin-bottom: 2px !important;
}
.author-tagline {
  font-size: 12px !important;
  color: var(--text-muted) !important;
  margin-bottom: 0 !important;
}
.author-bio {
  font-size: 13px;
  line-height: 1.55;
  color: #e2e8f0;
  margin-bottom: 16px;
}

.about-links-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
}
@media (max-width: 600px) {
  .about-links-grid {
    grid-template-columns: 1fr;
  }
}
.about-card-link {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  background: var(--card);
  border: 2px solid var(--surface2);
  border-radius: var(--radius-sm);
  color: var(--text-main);
  text-decoration: none;
  transition: all var(--transition-fast);
}
.about-card-link:hover {
  background: var(--card-hover);
  border-color: rgba(52, 211, 153, 0.5);
  transform: translateY(-2px);
  color: #ffffff;
}
.about-card-link--primary {
  border-color: rgba(52, 211, 153, 0.4);
  background: rgba(16, 185, 129, 0.15);
}
.about-card-link--primary:hover {
  background: rgba(16, 185, 129, 0.3);
  border-color: #34d399;
}
.about-card-link--accent {
  border-color: rgba(56, 189, 248, 0.4);
  background: rgba(14, 165, 233, 0.15);
}
.about-card-link--accent:hover {
  background: rgba(14, 165, 233, 0.3);
  border-color: #38bdf8;
}
.link-icon {
  font-size: 20px;
  flex-shrink: 0;
}
.link-text {
  display: flex;
  flex-direction: column;
  flex: 1;
  min-width: 0;
}
.link-text strong {
  font-size: 12px;
  color: #ffffff;
}
.link-text small {
  font-size: 11px;
  color: var(--text-muted);
}
.link-arrow {
  color: var(--text-muted);
  font-size: 14px;
}
.about-card-link:hover .link-arrow {
  color: #34d399;
}

/* ==========================================================================
   ШВИДКІ ПОВІДОМЛЕННЯ ТА ПІДКАЗКИ (TOAST NOTIFICATIONS)
   ========================================================================== */

.app-toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: rgba(15, 52, 96, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 2px solid var(--surface2);
  border-radius: var(--radius-md);
  padding: 10px 16px;
  display: flex;
  align-items: center;
  gap: 12px;
  box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.6), 0 0 15px rgba(245, 158, 11, 0.2);
  z-index: 1000;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.22s ease, transform 0.22s cubic-bezier(0.16, 1, 0.3, 1);
  max-width: 90vw;
}

@media (hover: none) and (pointer: coarse) {
  .view-btn, .btn-start-mission, .lesson-button, .pixel-tools-button,
  .gen-tab-btn, .missions-filter-btn, .btn-mission-apply, .step-btn {
    min-height: 44px;
  }
  .modal-close-btn, .missions-close-btn, .lesson-close {
    width: 44px;
    height: 44px;
    min-width: 44px;
    min-height: 44px;
  }
}

.app-toast.visible {
  opacity: 1;
  pointer-events: auto;
  transform: translateX(-50%) translateY(0);
}

.toast-text {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--text-main);
  white-space: nowrap;
}

.toast-action-btn {
  background: var(--accent-forge);
  color: var(--on-yellow);
  font-weight: 700;
  font-size: var(--text-xs);
  border: none;
  border-radius: var(--radius-xs);
  padding: 5px 12px;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.toast-action-btn:hover {
  background: var(--accent-gold);
  transform: translateY(-1px);
}

.toast-close-btn {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 14px;
  cursor: pointer;
  padding: 2px 4px;
  line-height: 1;
  border-radius: var(--radius-xs);
}

.toast-close-btn:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.1);
}

/* ==========================================================================
   СВЯТКОВЕ КОНФЕТТІ-ПОЛОТНО (CONFETTI CELEBRATION CANVAS)
   ========================================================================== */

.confetti-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  pointer-events: none;
  z-index: 9999;
  display: none;
}

/* ==========================================================================
   FRIENDLY ARCADE SHARED COMPONENT CLASSES
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 8px 16px;
  border-radius: var(--r-pill);
  border: var(--border-width-control) solid var(--surface2);
  background: var(--surface);
  color: var(--text);
  font-family: inherit;
  font-weight: 800;
  cursor: pointer;
  text-decoration: none;
  transition: all var(--duration-fast, 0.15s) var(--ease-bounce);
  user-select: none;
}
.btn:hover {
  transform: translateY(-2px);
  background: var(--card-hover);
  border-color: var(--yellow);
}
.btn:active {
  transform: scale(0.96);
}
.btn--primary {
  background: var(--green);
  color: var(--on-green);
  border-color: transparent;
  box-shadow: var(--shadow-glow-green);
}
.btn--primary:hover {
  background: var(--green-dark);
  color: var(--on-green);
  box-shadow: 0 6px 25px rgba(0, 210, 106, 0.45);
}
.btn--accent {
  background: var(--yellow);
  color: var(--on-yellow);
  border-color: transparent;
  box-shadow: 0 4px 15px rgba(255, 195, 18, 0.35);
}
.btn--accent:hover {
  background: #ffcf00;
  color: var(--on-yellow);
}
.btn--ghost {
  background: transparent;
  border-color: var(--surface2);
  color: var(--text);
}
.btn--ghost:hover {
  background: var(--surface);
  border-color: var(--cyan);
}
.pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  border-radius: var(--r-pill);
  font-size: 0.8rem;
  font-weight: 800;
  border: var(--border-width-control) solid var(--surface2);
  background: var(--surface);
  color: var(--text);
}
.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: var(--r-pill);
  font-size: 0.85rem;
  font-weight: 700;
  border: var(--border-width-control) solid var(--surface2);
  background: var(--bg2);
  color: var(--text2);
  cursor: pointer;
  transition: all var(--duration-fast, 0.15s) var(--ease-smooth);
}
.chip:hover {
  color: #fff;
  border-color: var(--yellow);
  transform: translateY(-2px);
}
.chip.active {
  background: var(--green);
  color: var(--on-green);
  border-color: transparent;
  font-weight: 900;
  box-shadow: var(--shadow-glow-green);
}
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 8px;
  border-radius: var(--r-pill);
  font-size: 0.72rem;
  font-weight: 800;
  line-height: 1.2;
}
.badge--new {
  background: linear-gradient(135deg, var(--cyan), var(--blue));
  color: #061e38;
}
.badge--hot {
  background: linear-gradient(135deg, #c02937, #9b1d20);
  color: #fff;
}
.badge--ok {
  background: var(--green);
  color: var(--on-green);
}
.badge--warn {
  background: var(--yellow);
  color: var(--on-yellow);
}

@media print {
  body {
    background: #ffffff !important;
    color: #000000 !important;
    width: 100% !important;
    height: auto !important;
    overflow: visible !important;
  }
  .topbar,
  .view-mode-bar,
  .sidebar,
  .viewport-area,
  .no-print,
  .no-print-visible,
  .modal-backdrop:not(#print-card-modal),
  .modal-header,
  .print-card-toolbar,
  .modal-footer {
    display: none !important;
  }
  #print-card-modal {
    position: static !important;
    background: transparent !important;
    padding: 0 !important;
    display: block !important;
    width: 100% !important;
    height: auto !important;
  }
  .modal-window {
    box-shadow: none !important;
    border: none !important;
    max-height: none !important;
    width: 100% !important;
  }
  .passport-card-paper {
    border: 2px solid #000 !important;
    margin: 0 !important;
    padding: 16px !important;
    page-break-inside: avoid;
  }
}