/* ================================================================
   BitBright Pitch Deck — Common Styles
   Premium dark theme with glassmorphism, glow, and micro-interactions
   ================================================================ */

/* --- Reset & Base ----------------------------------------------- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  /* Palette — light theme */
  --color-bg:        #f4f4f8;
  --color-surface:   #ffffff;
  --color-card:      #f8f8fc;
  --color-card-hover:#efeff6;
  --color-border:    #e2e2ec;
  --color-border-light: #d4d4e2;
  --color-primary:   #6c4df6;
  --color-accent:    #00a99d;
  --color-text:      #1a1a2e;
  --color-text-dim:  #4a4a6a;
  --color-text-muted:#8888a8;
  --color-success:   #00a878;
  --color-warning:   #d48800;
  --color-danger:    #e04040;

  /* Gradients (accents only, not backgrounds) */
  --gradient-primary: linear-gradient(135deg, #6c4df6, #9b7fff);
  --gradient-accent:  linear-gradient(135deg, #00a99d, #00d4c5);

  /* Shadows */
  --shadow-sm:  0 1px 4px rgba(0,0,0,0.06);
  --shadow-md:  0 4px 16px rgba(0,0,0,0.08);
  --shadow-lg:  0 8px 32px rgba(0,0,0,0.10);

  /* Typography */
  --font-mono:   'SF Mono', 'Fira Code', 'JetBrains Mono', monospace;
  --font-sans:   'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-display: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;

  /* Sizing */
  --slide-width:   min(960px, 90vw);
  --slide-height:  min(640px, 80vh);
  --radius-sm:     8px;
  --radius:        14px;
  --radius-lg:     20px;
  --gap:           16px;

  /* Transitions */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* --- Background Atmosphere ------------------------------------- */
html, body {
  height: 100%;
  overflow: hidden;
  font-family: var(--font-sans);
  background: var(--color-bg);
  color: var(--color-text);
  -webkit-font-smoothing: antialiased;
}

/* --- Scrollbar ------------------------------------------------- */
::-webkit-scrollbar { width: 5px; height: 5px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--color-border); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--color-border-light); }
* { scrollbar-width: thin; scrollbar-color: var(--color-border) transparent; }

/* --- App Layout ------------------------------------------------ */
#app {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100vh;
  padding: 1rem;
}

/* --- Progress Bar ---------------------------------------------- */
#progress-bar {
  position: fixed;
  top: 0; left: 0;
  width: 100%;
  height: 3px;
  background: var(--color-border);
  z-index: 100;
}
#progress-fill {
  height: 100%;
  background: var(--gradient-primary);
  transition: width 0.5s var(--ease-out);
  width: 0%;
}

/* --- Slide Counter --------------------------------------------- */
#slide-counter {
  position: fixed;
  top: 14px; right: 18px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--color-text-muted);
  background: var(--color-card);
  padding: 4px 12px;
  border-radius: 20px;
  border: 1px solid var(--color-border);
  z-index: 100;
}

/* --- Slide Container ------------------------------------------- */
#slide-container {
  width: var(--slide-width);
  max-height: var(--slide-height);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  overflow-y: auto;
  box-shadow: var(--shadow-lg);
  transition: opacity 0.3s var(--ease-out), transform 0.3s var(--ease-out);
}
#slide-container.loading {
  opacity: 0;
  transform: translateY(10px);
}

/* --- Navigation ------------------------------------------------ */
#controls {
  display: flex;
  gap: 12px;
  margin-top: 18px;
}
#controls button {
  width: 46px; height: 46px;
  border: 2px solid var(--color-border);
  border-radius: 50%;
  background: var(--color-card);
  color: var(--color-text-dim);
  font-size: 1.1rem;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.2s var(--ease-out);
  display: flex;
  align-items: center;
  justify-content: center;
}
#controls button:hover:not(:disabled) {
  border-color: var(--color-primary);
  background: var(--color-primary);
  color: #fff;
}
#controls button:active:not(:disabled) {
  transform: scale(0.94);
}
#controls button:disabled {
  opacity: 0.2;
  cursor: not-allowed;
}

/* --- Shared Typography ----------------------------------------- */
.slide-title {
  font-family: var(--font-display);
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--color-text);
  margin-bottom: 1rem;
  line-height: 1.15;
  letter-spacing: -0.03em;
}
.slide-subtitle {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  margin-bottom: 0.5rem;
}
.slide-body {
  font-size: 1.15rem;
  font-weight: 450;
  line-height: 1.65;
  color: var(--color-text-dim);
}
.slide-section-heading {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--color-accent);
  margin: 1.5rem 0 0.6rem;
  letter-spacing: -0.01em;
}

/* --- Shared Components: Cards ---------------------------------- */
.card {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.15rem;
  transition: background 0.2s var(--ease-out), border-color 0.2s var(--ease-out);
}
.card:hover {
  background: var(--color-card-hover);
  border-color: var(--color-border-light);
}
.card.accent:hover {
  border-color: var(--color-accent);
}
.card-icon {
  font-size: 1.75rem;
  margin-bottom: 0.5rem;
  line-height: 1;
}
.card-title {
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--color-text);
  margin-bottom: 0.3rem;
  letter-spacing: -0.01em;
}
.card-text {
  font-size: 0.95rem;
  font-weight: 450;
  color: var(--color-text-dim);
  line-height: 1.55;
}

/* --- Tags & Badges --------------------------------------------- */
.tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: 6px;
  background: var(--color-card);
  color: var(--color-primary);
  border: 1px solid var(--color-border);
  margin-right: 4px;
}

.badge {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 0.78rem;
  font-weight: 700;
}
.badge-green  { background: #e0f7ef; color: #008a60; border: 1px solid #b8e8d4; }
.badge-yellow { background: #fff3d6; color: #b87000; border: 1px solid #f0d890; }
.badge-red    { background: #ffe8e5; color: #c03030; border: 1px solid #f5c4c0; }
.badge-purple { background: #eeebff; color: #5a3fd4; border: 1px solid #d4cdf8; }

/* --- Two-column layout ----------------------------------------- */
.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--gap);
}

/* --- Grid layouts ---------------------------------------------- */
.grid-1 { display: grid; grid-template-columns: 1fr; gap: var(--gap); }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--gap); }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--gap); }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--gap); }

/* --- Table styles ---------------------------------------------- */
.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
}
.data-table th {
  text-align: left;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-primary);
  padding: 0.6rem 0.85rem;
  border-bottom: 2px solid var(--color-border);
}
.data-table td {
  padding: 0.6rem 0.85rem;
  border-bottom: 1px solid var(--color-border);
  color: var(--color-text-dim);
  font-weight: 450;
  vertical-align: top;
  line-height: 1.45;
}
.data-table tbody tr:hover {
  background: var(--color-card);
}
.data-table tr:last-child td { border-bottom: none; }
.data-table .check { color: var(--color-success); font-weight: 700; }
.data-table .cross { color: var(--color-danger); font-weight: 700; }

/* --- Emoji row ------------------------------------------------- */
.emoji-row {
  display: flex;
  gap: 14px;
  justify-content: center;
  font-size: 1.75rem;
  margin: 1rem 0;
}

/* --- Roadmap phases -------------------------------------------- */
.phase {
  border-left: 4px solid var(--color-primary);
  padding: 0.7rem 0 0.7rem 1.2rem;
  margin-bottom: 1rem;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  background: var(--color-card);
  transition: border-color 0.2s ease;
}
.phase:hover {
  border-left-color: var(--color-accent);
}
.phase-title {
  font-weight: 700;
  color: var(--color-text);
  font-size: 1rem;
  margin-bottom: 0.3rem;
}
.phase-items {
  font-size: 0.9rem;
  font-weight: 450;
  color: var(--color-text-dim);
  line-height: 1.7;
}

/* --- Blockquote ------------------------------------------------ */
blockquote {
  background: var(--color-card);
  border-left: 4px solid var(--color-primary);
  padding: 1rem 1.25rem;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-style: italic;
  font-weight: 450;
  color: var(--color-text-dim);
  line-height: 1.6;
}

/* --- Divider --------------------------------------------------- */
.divider {
  height: 1px;
  background: var(--color-border);
  margin: 1.25rem 0;
}

/* --- World Map (slide-06) -------------------------------------- */
.world-map {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 0.9rem 1.1rem;
}
.world-row {
  transition: background 0.15s ease;
}
.world-row:hover {
  background: var(--color-card-hover);
}
.world-row.locked {
  opacity: 0.4;
}

/* --- Text emphasis helpers (bold + color, no opacity) ---------- */
.text-bold    { font-weight: 700; }
.text-primary { color: var(--color-primary); font-weight: 700; }
.text-accent  { color: var(--color-accent); font-weight: 700; }
.text-success { color: var(--color-success); font-weight: 700; }
.text-warning { color: var(--color-warning); font-weight: 700; }
.text-danger  { color: var(--color-danger); font-weight: 700; }
.text-dark   { color: var(--color-text); font-weight: 700; }
.text-lg      { font-size: 1.3rem; }
.text-xl      { font-size: 1.6rem; }

/* --- CTA Link (demo button) ----------------------------------- */
.cta-link {
  display: inline-block;
  padding: 14px 32px;
  font-size: 1.1rem;
  font-weight: 700;
  color: #fff;
  background: var(--gradient-primary);
  border-radius: 12px;
  text-decoration: none;
  transition: all 0.2s var(--ease-out);
  box-shadow: 0 4px 16px rgba(108,77,246,0.25);
}
.cta-link:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(108,77,246,0.35);
}

/* --- Live badge (product is running now) --------------------- */
.live-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 8px 18px;
  font-size: 0.95rem;
  color: var(--color-text);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  box-shadow: var(--shadow-sm);
}
.live-badge strong {
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  color: var(--color-success);
}
.live-badge a {
  color: var(--color-primary);
  font-weight: 700;
  text-decoration: none;
}
.live-badge a:hover { text-decoration: underline; }
.live-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-success);
  box-shadow: 0 0 0 0 rgba(0,168,120,0.45);
  animation: live-pulse 2s infinite;
}
@keyframes live-pulse {
  0%   { box-shadow: 0 0 0 0 rgba(0,168,120,0.45); }
  70%  { box-shadow: 0 0 0 8px rgba(0,168,120,0); }
  100% { box-shadow: 0 0 0 0 rgba(0,168,120,0); }
}

/* Utility */
.muted  { color: var(--color-text-muted); }
.center { text-align: center; }
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }

/* Print — hidden on screen, shown on print */
#print-area {
  display: none;
}

@media print {
  @page {
    size: landscape;
    /* Safe margin — print stays clean even if the dialog ignores it,
       and dense slides can never be clipped by printer hardware margins. */
    margin: 0.35in;
  }

  html, body {
    height: auto;
    overflow: visible;
    background: #fff;
    color: #000;
  }

  #app, #progress-bar, #slide-counter, #controls {
    display: none !important;
  }

  #print-area {
    display: block !important;
  }

  /*
    Each logical slide starts on its own page. No fixed height, no
    overflow:hidden and no flex-centering — slides that are denser than
    one page simply flow onto the next page instead of being clipped.
  */
  .print-slide {
    width: 100%;
    background: #fff;
    overflow: visible;
    break-before: page;
    break-inside: auto;
  }
  .print-slide:first-child {
    break-before: auto;
  }
  /* Keep self-contained blocks intact across page breaks */
  .print-slide .card,
  .print-slide .concept-card,
  .print-slide .phase,
  .print-slide blockquote,
  .print-slide .world-map,
  .print-slide .world-row,
  .print-slide .data-table tr,
  .print-slide .live-badge {
    break-inside: avoid;
  }

  /* --- Compact print typography (helps dense slides fit one page) --- */
  .print-slide .slide-title {
    font-size: 1.9rem;
    line-height: 1.15;
    margin-bottom: 0.5rem;
  }
  .print-slide .slide-subtitle {
    font-size: 0.7rem;
    margin-bottom: 0.3rem;
  }
  .print-slide .slide-body {
    font-size: 0.98rem;
    line-height: 1.5;
  }
  .print-slide .slide-section-heading {
    font-size: 1.1rem;
    margin: 0.9rem 0 0.4rem;
  }
  .print-slide .card {
    padding: 0.65rem 0.9rem;
  }
  .print-slide .card-icon {
    font-size: 1.4rem;
    margin-bottom: 0.25rem;
  }
  .print-slide .card-title {
    font-size: 0.95rem;
    margin-bottom: 0.2rem;
  }
  .print-slide .card-text {
    font-size: 0.85rem;
    line-height: 1.45;
  }
  .print-slide .grid-2,
  .print-slide .grid-3,
  .print-slide .grid-4,
  .print-slide .two-col {
    gap: 0.6rem;
  }
  .print-slide .phase {
    padding: 0.4rem 0 0.4rem 0.9rem;
    margin-bottom: 0.5rem;
  }
  .print-slide .phase-title {
    font-size: 0.9rem;
    margin-bottom: 0.2rem;
  }
  .print-slide .phase-items {
    font-size: 0.8rem;
    line-height: 1.5;
  }
  .print-slide blockquote {
    padding: 0.6rem 0.9rem;
    font-size: 0.9rem;
    line-height: 1.5;
    margin: 0.5rem 0;
  }
  .print-slide .world-map {
    padding: 0.6rem 0.8rem;
  }
  .print-slide .emoji-row {
    margin: 0.6rem 0;
    font-size: 1.4rem;
  }
  .print-slide .cta-link {
    padding: 0.5rem 1.2rem;
    font-size: 0.95rem;
  }
  .print-slide .live-badge {
    padding: 4px 12px;
    font-size: 0.85rem;
  }
  /* Tighten utility spacing inside print slides */
  .print-slide .mt-1 { margin-top: 0.3rem; }
  .print-slide .mt-2 { margin-top: 0.6rem; }
  .print-slide .mt-3 { margin-top: 0.8rem; }
  .print-slide .mb-1 { margin-bottom: 0.3rem; }
  .print-slide .mb-2 { margin-bottom: 0.5rem; }

  /* --- Force dark text on white for print --- */
  .print-slide .slide-title,
  .print-slide .slide-subtitle,
  .print-slide .card-title,
  .print-slide .phase-title {
    color: #000 !important;
  }

  .print-slide .slide-body,
  .print-slide .card-text,
  .print-slide .phase-items,
  .print-slide .muted,
  .print-slide .data-table td,
  .print-slide blockquote {
    color: #333 !important;
  }

  .print-slide .card,
  .print-slide .concept-card,
  .print-slide .phase,
  .print-slide blockquote,
  .print-slide .world-map {
    background: #fff !important;
    border: 1px solid #ddd !important;
  }

  .print-slide table,
  .print-slide .data-table {
    border: 1px solid #ddd;
  }
  .print-slide .data-table th {
    border-bottom: 2px solid #999;
    color: #444;
  }
  .print-slide .data-table td {
    border-bottom: 1px solid #ddd;
  }

  .print-slide .cta-link {
    border: 2px solid var(--color-primary) !important;
    background: #fff !important;
    color: var(--color-primary) !important;
    box-shadow: none !important;
  }

  /* Live "pulse" dot becomes a static dot when printed */
  .print-slide .live-dot {
    animation: none;
  }

  /* --- Slide 06 (Student Journey): compress steps + put the 8-world
         map in two columns so the slide fits one landscape page --- */
  .print-slide.slide-06 .card.mb-1 {
    padding: 0.3rem 0.7rem;
    margin-bottom: 0.2rem;
  }
  .print-slide.slide-06 .card-text {
    line-height: 1.35;
  }
  /* Down-arrows between steps — smaller */
  .print-slide.slide-06 > div[style*="text-align:center"] {
    font-size: 0.7rem !important;
    line-height: 1 !important;
    margin: -2px 0 !important;
  }
  /* World map: 8 rows flow into two columns of 4 */
  .print-slide.slide-06 .world-map {
    columns: 2;
    column-gap: 1.75rem;
    padding: 0.4rem 0.7rem;
    margin-top: 0.4rem;
  }
  .print-slide.slide-06 .world-row {
    break-inside: avoid;
    padding: 0.2rem 0 !important;
  }
  .print-slide.slide-06 .world-row > span:first-child {
    font-size: 0.9rem !important;
  }
  /* Stats row (streak / XP / level / badges) spans both columns */
  .print-slide.slide-06 .world-map > div:last-child {
    column-span: all;
    margin-top: 0.35rem;
    padding-top: 0.3rem;
    font-size: 0.78rem !important;
  }

  /* Print real external URLs after links (skip buttons/badges) */
  .print-slide a[href^="http"]:after {
    content: " (" attr(href) ")";
    font-size: 0.6rem;
    font-weight: 400;
    color: #666;
  }
  .print-slide .cta-link:after,
  .print-slide .live-badge a:after {
    content: none;
  }
}

/* ================================================================
   MOBILE RESPONSIVE — Breakpoints: ≤640px (tablet), ≤480px (phone)
   ================================================================ */

/* --- Tablet / Small Laptop (≤768px) ---------------------------- */
@media (max-width: 768px) {
  :root {
    --slide-width:  min(960px, 94vw);
    --slide-height: min(640px, 85vh);
  }

  #slide-container {
    padding: 1.75rem;
  }

  .slide-title {
    font-size: 1.75rem;
  }

  .slide-subtitle {
    font-size: 0.75rem;
  }

  .slide-body {
    font-size: 1rem;
  }

  .slide-section-heading {
    font-size: 1.15rem;
  }

  .text-lg { font-size: 1.15rem; }
  .text-xl { font-size: 1.35rem; }

  .emoji-row {
    font-size: 1.35rem;
    gap: 10px;
  }

  /* Tables: horizontal scroll wrapper */
  .data-table {
    font-size: 0.75rem;
  }
  .data-table th,
  .data-table td {
    padding: 0.4rem 0.5rem;
    white-space: nowrap;
  }

  /* Grids: 2-col on tablet */
  .grid-2, .grid-3, .grid-4 {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }

  .two-col {
    gap: 12px;
  }

  /* Cards */
  .card {
    padding: 0.9rem;
  }
  .card-icon {
    font-size: 1.4rem;
  }
  .card-title {
    font-size: 0.95rem;
  }
  .card-text {
    font-size: 0.85rem;
  }

  /* World map rows */
  .world-map {
    padding: 0.6rem 0.8rem;
  }

  /* CTA link */
  .cta-link {
    padding: 10px 22px;
    font-size: 0.95rem;
  }

  /* Phase / roadmap */
  .phase {
    padding: 0.5rem 0 0.5rem 0.9rem;
  }
  .phase-title {
    font-size: 0.9rem;
  }
  .phase-items {
    font-size: 0.8rem;
  }

  /* Blockquote */
  blockquote {
    padding: 0.75rem 1rem;
    font-size: 0.9rem;
  }

  /* Nav buttons */
  #controls button {
    width: 40px;
    height: 40px;
    font-size: 1rem;
  }
  #controls {
    gap: 10px;
    margin-top: 14px;
  }
}

/* --- Phone (≤480px) -------------------------------------------- */
@media (max-width: 480px) {
  :root {
    --slide-width:  min(960px, 98vw);
    --slide-height: min(640px, 90vh);
  }

  #slide-container {
    padding: 1.25rem;
    border-radius: var(--radius);
  }

  .slide-title {
    font-size: 1.4rem;
    margin-bottom: 0.6rem;
  }

  .slide-subtitle {
    font-size: 0.7rem;
    letter-spacing: 0.1em;
  }

  .slide-body {
    font-size: 0.9rem;
    line-height: 1.5;
  }

  .slide-section-heading {
    font-size: 1rem;
    margin: 1rem 0 0.4rem;
  }

  .text-lg { font-size: 1rem; }
  .text-xl { font-size: 1.15rem; }

  .emoji-row {
    font-size: 1.1rem;
    gap: 6px;
    flex-wrap: wrap;
  }

  /* Grids: single column */
  .grid-2, .grid-3, .grid-4 {
    grid-template-columns: 1fr;
    gap: 10px;
  }

  .two-col {
    grid-template-columns: 1fr;
    gap: 10px;
  }

  /* Cards */
  .card {
    padding: 0.75rem;
  }
  .card-icon {
    font-size: 1.2rem;
  }
  .card-title {
    font-size: 0.9rem;
  }
  .card-text {
    font-size: 0.8rem;
  }

  /* Data tables: enable horizontal scroll */
  .data-table {
    font-size: 0.7rem;
    display: block;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }
  .data-table th,
  .data-table td {
    padding: 0.35rem 0.4rem;
    white-space: nowrap;
  }

  /* World map */
  .world-map {
    padding: 0.5rem 0.6rem;
    font-size: 0.75rem;
  }

  /* CTA link */
  .cta-link {
    padding: 10px 20px;
    font-size: 0.85rem;
    border-radius: 10px;
  }

  /* Phase / roadmap */
  .phase {
    padding: 0.4rem 0 0.4rem 0.75rem;
    border-left-width: 3px;
  }
  .phase-title {
    font-size: 0.85rem;
  }
  .phase-items {
    font-size: 0.75rem;
    line-height: 1.5;
  }

  /* Blockquote */
  blockquote {
    padding: 0.6rem 0.8rem;
    font-size: 0.8rem;
    border-left-width: 3px;
  }

  /* Nav buttons */
  #controls button {
    width: 36px;
    height: 36px;
    font-size: 0.9rem;
  }

  /* Slide counter */
  #slide-counter {
    top: 8px;
    right: 8px;
    font-size: 0.7rem;
    padding: 2px 8px;
  }

  /* Divider */
  .divider {
    margin: 0.75rem 0;
  }

  /* Badges */
  .badge {
    padding: 2px 8px;
    font-size: 0.7rem;
  }

  .tag {
    font-size: 0.68rem;
    padding: 2px 7px;
  }

  /* mt/mb utility scaling */
  .mt-1 { margin-top: 0.35rem; }
  .mt-2 { margin-top: 0.7rem; }
  .mt-3 { margin-top: 1rem; }
  .mb-1 { margin-bottom: 0.35rem; }
  .mb-2 { margin-bottom: 0.7rem; }
}

/* --- Extra small (≤360px) -------------------------------------- */
@media (max-width: 360px) {
  .slide-title {
    font-size: 1.25rem;
  }

  .text-lg { font-size: 0.95rem; }
  .text-xl { font-size: 1.05rem; }

  #slide-container {
    padding: 1rem;
  }

  .card {
    padding: 0.6rem;
  }

  #controls button {
    width: 32px;
    height: 32px;
    font-size: 0.8rem;
  }

  .cta-link {
    padding: 8px 16px;
    font-size: 0.8rem;
  }
}

/* ================================================================
   SLIDE-SPECIFIC STYLES (bundled for static loading — Brave compat)
   ================================================================ */

/* ---- Slide 01 — Title ----------------------------------------- */
#slide-container .slide-title.s01 { font-size: 3.5rem; letter-spacing: 0.04em; text-align: center; }
#slide-container .emoji-row.s01 { font-size: 2.5rem; gap: 16px; margin: 1.5rem 0; }

/* ---- Slide 02 — The Problem ----------------------------------- */
#slide-container .s02 .two-col .card:first-child { border-left: 3px solid var(--color-danger); background: rgba(224,64,64,0.05); }
#slide-container .s02 .two-col .card:last-child  { border-left: 3px solid var(--color-text-dim); background: rgba(255,255,255,0.02); }
#slide-container .s02 .two-col .card li { padding: 3px 0; font-size: 1rem; }

/* ---- Slide 03 — Why Now --------------------------------------- */
#slide-container .s03 .grid-2 .card { border-top: 2px solid var(--color-primary); transition: border-color 0.3s ease; }
#slide-container .s03 .grid-2 .card:hover { border-top-color: var(--color-accent); }

/* ---- Slide 04 — The Solution ---------------------------------- */
#slide-container .s04 .grid-2 .card .card-icon { font-size: 2.25rem; }

/* ---- Slide 05 — The Sandboxes --------------------------------- */
#slide-container .s05 .grid-2 .card { transition: transform 0.2s ease, box-shadow 0.2s ease; }
#slide-container .s05 .grid-2 .card:hover { transform: translateY(-2px); box-shadow: 0 4px 16px rgba(108,77,246,0.10); }
#slide-container .s05 .grid-2 .card .card-icon { font-size: 2rem; }

/* ---- Slide 06 — Student Journey ------------------------------- */
#slide-container .s06 .card { transition: border-color 0.2s ease; }
#slide-container .s06 .card:hover { border-color: var(--color-primary); }
#slide-container .s06 .world-map { background: rgba(255,255,255,0.02); border: 1px solid var(--color-border); border-radius: var(--radius); padding: 0.8rem 1rem; }
#slide-container .s06 .world-row.locked { opacity: 0.45; }

/* ---- Slide 07 — Traction -------------------------------------- */
#slide-container .s07 .check { color: var(--color-success); font-weight: 700; }

/* ---- Slide 08 — Market Opportunity ---------------------------- */
#slide-container .s08 .phase { border-left-color: var(--color-accent); }

/* ---- Slide 09 — Competition ----------------------------------- */
#slide-container .s09 .data-table td.check { font-size: 1.3rem; }
#slide-container .s09 .data-table td.cross { font-size: 1.3rem; }
#slide-container .s09 .data-table tbody tr:hover { background: rgba(108,77,246,0.05); }

/* ---- Slide 10 — Business Model -------------------------------- */
#slide-container .s10 .grid-3 .card { text-align: center; transition: transform 0.2s ease; }
#slide-container .s10 .grid-3 .card:hover { transform: translateY(-3px); }
#slide-container .s10 .grid-3 .card .card-title { font-size: 1.15rem; margin: 0.5rem 0; }

/* ---- Slide 11 — Go-to-Market ---------------------------------- */
#slide-container .s11 .card strong { color: var(--color-text); }

/* ---- Slide 12 — Roadmap --------------------------------------- */
#slide-container .s12 .phase:nth-child(odd)  { border-left-color: var(--color-primary); }
#slide-container .s12 .phase:nth-child(even) { border-left-color: var(--color-accent); }

/* ---- Slide 13 — Team ------------------------------------------ */
#slide-container .s13 .card .card-icon { font-size: 2.25rem; }

/* ---- Slide 14 — Risk & Mitigation ----------------------------- */
#slide-container .s14 .data-table td:nth-child(2),
#slide-container .s14 .data-table td:nth-child(3) { text-align: center; font-weight: 600; font-size: 0.85rem; }
#slide-container .s14 .data-table td { font-size: 0.85rem; }

/* ---- Slide 15 — The Ask --------------------------------------- */
#slide-container .s15 .card { border-left: 3px solid var(--color-primary); }
#slide-container .s15 .card:nth-child(2) { border-left-color: var(--color-accent); }
#slide-container .s15 .card:nth-child(3) { border-left-color: var(--color-warning); }

/* ---- Slide 16 — Contact & Next Steps -------------------------- */
#slide-container .s16 .slide-title { font-size: 1.85rem; text-align: center; }
#slide-container .s16 blockquote { text-align: center; font-size: 1.3rem; border-left: none; color: var(--color-accent); }

/* ================================================================
   SLIDE-SPECIFIC MOBILE OVERRIDES
   ================================================================ */
@media (max-width: 768px) {
  #slide-container .s01 .slide-title { font-size: 2.2rem; }
  #slide-container .s01 .emoji-row { font-size: 1.8rem; gap: 12px; }
  #slide-container .s02 .two-col .card li { font-size: 0.9rem; }
  #slide-container .s04 .grid-2 .card .card-icon { font-size: 1.75rem; }
  #slide-container .s05 .grid-2 .card .card-icon { font-size: 1.6rem; }
  #slide-container .s09 .data-table td.check,
  #slide-container .s09 .data-table td.cross { font-size: 1.1rem; }
  #slide-container .s10 .grid-3 .card .card-title { font-size: 1rem; }
  #slide-container .s13 .card .card-icon { font-size: 1.75rem; }
  #slide-container .s14 .data-table td { font-size: 0.75rem; }
  #slide-container .s14 .data-table td:nth-child(2),
  #slide-container .s14 .data-table td:nth-child(3) { font-size: 0.75rem; }
  #slide-container .s16 .slide-title { font-size: 1.5rem; }
  #slide-container .s16 blockquote { font-size: 1.1rem; }
}

@media (max-width: 480px) {
  #slide-container .s01 .slide-title { font-size: 1.6rem; letter-spacing: 0.02em; }
  #slide-container .s01 .emoji-row { font-size: 1.4rem; gap: 8px; margin: 0.75rem 0; }
  #slide-container .s02 .two-col .card li { font-size: 0.82rem; padding: 2px 0; }
  #slide-container .s04 .grid-2 .card .card-icon { font-size: 1.5rem; }
  #slide-container .s05 .grid-2 .card .card-icon { font-size: 1.4rem; }
  #slide-container .s06 .world-map { padding: 0.5rem 0.6rem; }
  #slide-container .s06 .world-row { flex-wrap: wrap; gap: 0.3rem !important; padding: 0.3rem 0 !important; }
  #slide-container .s06 .world-row span { font-size: 0.72rem !important; }
  #slide-container .s09 .data-table td.check,
  #slide-container .s09 .data-table td.cross { font-size: 1rem; }
  #slide-container .s10 .grid-3 .card .card-title { font-size: 0.9rem; }
  #slide-container .s13 .card .card-icon { font-size: 1.5rem; }
  #slide-container .s14 .data-table td { font-size: 0.7rem; }
  #slide-container .s14 .data-table td:nth-child(2),
  #slide-container .s14 .data-table td:nth-child(3) { font-size: 0.7rem; }
  #slide-container .s16 .slide-title { font-size: 1.25rem; }
  #slide-container .s16 blockquote { font-size: 0.95rem; }
}

@media (max-width: 360px) {
  #slide-container .s01 .slide-title { font-size: 1.35rem; }
  #slide-container .s01 .emoji-row { font-size: 1.15rem; gap: 5px; }
  #slide-container .s16 .slide-title { font-size: 1.1rem; }
  #slide-container .s16 blockquote { font-size: 0.85rem; }
}