/* ═══════════════════════════════════════════════════════════════════════════
   DECK-AS-CODE — BASE STYLES
   Premium Design System · Tech-Forward · Bold
   ═══════════════════════════════════════════════════════════════════════════ */

/* ─── CUSTOM PROPERTIES ─────────────────────────────────────────────────── */
:root {
  --bg: #050607;
  --fg: #F7F8F8;
  --primary: #37E813;
  --primary-dark: #2BC410;
  --accent: var(--primary);
  --accent2: #27D6FF;
  --muted: rgba(247,248,248,0.66);
  --subtle: rgba(247,248,248,0.12);
  --subtle-2: rgba(247,248,248,0.06);

  /* Surfaces / Borders */
  --surface-1: rgba(255,255,255,0.02);
  --surface-2: rgba(255,255,255,0.04);
  --surface-3: rgba(0,0,0,0.35);
  --border-1: rgba(255,255,255,0.10);
  --border-2: rgba(255,255,255,0.16);

  /* Radii / Shadows */
  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 22px;
  --shadow-1: 0 14px 40px rgba(0,0,0,0.38);
  --shadow-2: 0 24px 70px rgba(0,0,0,0.55);

  /* Typography */
  --font-body: 'Instrument Sans', ui-sans-serif, system-ui, -apple-system, 'Segoe UI', sans-serif;
  --font-display: 'Bricolage Grotesque', var(--font-body);
  --font: var(--font-body);
  --font-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;

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

  /* Background atmosphere */
  --bg-glow-1: radial-gradient(900px 560px at 20% 6%, rgba(55,232,19,0.14), transparent 60%);
  --bg-glow-2: radial-gradient(820px 520px at 88% 18%, rgba(39,214,255,0.10), transparent 62%);
  --bg-glow-3: radial-gradient(760px 520px at 22% 96%, rgba(255,255,255,0.04), transparent 58%);
  --bg-grid: linear-gradient(to right, rgba(255,255,255,0.045) 1px, transparent 1px),
             linear-gradient(to bottom, rgba(255,255,255,0.045) 1px, transparent 1px);
  --bg-grid-size: 72px;
  --bg-dots: radial-gradient(rgba(255,255,255,0.075) 1px, transparent 1px);
  --bg-dots-size: 18px;
}

/* ─── BRAND: ZOOPA ──────────────────────────────────────────────────────── */
[data-brand="zoopa"] {
  --primary: #FF6B00;
  --primary-dark: #E05F00;
  --accent: #FF6B00;
}

/* ─── RESET & BASE ──────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
  background-color: var(--bg);
  background-image: var(--bg-glow-1), var(--bg-glow-2), var(--bg-glow-3), var(--bg-grid), var(--bg-dots);
  background-size: auto, auto, auto, var(--bg-grid-size) var(--bg-grid-size), var(--bg-dots-size) var(--bg-dots-size);
  background-position: 0 0, 0 0, 0 0, 0 0, 8px 8px;
  color: var(--fg);
  font-family: var(--font);
  font-weight: 400;
  font-size: 16px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

/* ─── DECK STRUCTURE ────────────────────────────────────────────────────── */
.deck {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.deck__header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  padding: 24px 32px;
  border-bottom: 1px solid var(--subtle);
  position: relative;
  background: linear-gradient(180deg, rgba(255,255,255,0.03), transparent);
}

.deck__header::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 32px;
  width: 80px;
  height: 3px;
  background: var(--primary);
}

.deck__logo {
  height: 36px;
  opacity: 0.95;
  transition: opacity 0.3s ease;
}

.deck__logo:hover { opacity: 1; }

.deck__h1 {
  font-weight: 700;
  font-size: 13px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.deck__h2 {
  color: var(--muted);
  font-size: 12px;
  font-weight: 500;
  margin-top: 4px;
  letter-spacing: 0.02em;
}

/* ─── SLIDES CONTAINER ──────────────────────────────────────────────────── */
.slides {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px 32px;
  min-height: calc(100vh - 100px);
  touch-action: pan-y;
}

.slide {
  display: none;
  width: min(1140px, 100%);
  min-height: 65vh;
  padding: 48px 56px;
  position: relative;
  overflow: hidden;
  animation: none;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-1);
  background: linear-gradient(180deg, rgba(255,255,255,0.04), rgba(255,255,255,0.02));
  box-shadow: var(--shadow-1);
}

.slide::before {
  content: '';
  position: absolute;
  inset: 18px;
  border-radius: calc(var(--radius-lg) - 10px);
  pointer-events: none;
  opacity: 0.55;
  background:
    linear-gradient(var(--primary) 0 0) left top / 26px 2px no-repeat,
    linear-gradient(var(--primary) 0 0) left top / 2px 26px no-repeat,
    linear-gradient(var(--primary) 0 0) right top / 26px 2px no-repeat,
    linear-gradient(var(--primary) 0 0) right top / 2px 26px no-repeat,
    linear-gradient(var(--primary) 0 0) left bottom / 26px 2px no-repeat,
    linear-gradient(var(--primary) 0 0) left bottom / 2px 26px no-repeat,
    linear-gradient(var(--primary) 0 0) right bottom / 26px 2px no-repeat,
    linear-gradient(var(--primary) 0 0) right bottom / 2px 26px no-repeat;
}

.slide::after {
  content: '';
  position: absolute;
  inset: -2px;
  pointer-events: none;
  background:
    radial-gradient(640px 420px at 18% 16%, rgba(55,232,19,0.10), transparent 62%),
    radial-gradient(680px 520px at 94% 18%, rgba(39,214,255,0.07), transparent 64%),
    linear-gradient(180deg, rgba(255,255,255,0.03), transparent 36%);
  opacity: 0.9;
  mix-blend-mode: screen;
}

.slide.active {
  display: block;
  animation: deckSlideIn 0.5s var(--ease-out) forwards;
}

@keyframes deckSlideIn {
  from {
    opacity: 0;
    transform: translateY(18px) scale(0.988);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

@keyframes deckFadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes deckZoomIn {
  from { opacity: 0; transform: scale(0.98); }
  to { opacity: 1; transform: scale(1); }
}

/* Transition selector (configurable via data-deck-transition on <body>) */
[data-deck-transition="none"] .slide.active { animation: none; }
[data-deck-transition="fade"] .slide.active { animation: deckFadeIn 0.35s var(--ease-out) forwards; }
[data-deck-transition="zoom"] .slide.active { animation: deckZoomIn 0.35s var(--ease-out) forwards; }
[data-deck-transition="slide"] .slide.active { animation: deckSlideIn 0.5s var(--ease-out) forwards; }

@media (prefers-reduced-motion: reduce) {
  .slide.active { animation: none !important; }
  .reveal { transition: none !important; transform: none !important; }
}

/* Theme styles (configurable via data-deck-style on <body>) */
[data-deck-style="startup"] {
  --bg: #050607;
  --fg: #F7F8F8;
  --primary: #37E813;
  --primary-dark: #2BC410;
  --accent: var(--primary);
  --accent2: #27D6FF;
  --muted: rgba(247,248,248,0.66);
  --subtle: rgba(247,248,248,0.12);
  --subtle-2: rgba(247,248,248,0.06);
  --surface-1: rgba(255,255,255,0.02);
  --surface-2: rgba(255,255,255,0.05);
  --border-1: rgba(255,255,255,0.10);
  --border-2: rgba(255,255,255,0.18);
  --bg-grid-size: 72px;
}

[data-deck-style="corporate"] {
  --bg: #070B12;
  --fg: #F6F8FF;
  --primary: #3A7BFF;
  --primary-dark: #2F63D6;
  --accent: #3A7BFF;
  --accent2: #A8FF2A;
  --muted: rgba(246,248,255,0.62);
  --subtle: rgba(246,248,255,0.14);
  --subtle-2: rgba(246,248,255,0.08);
  --surface-1: rgba(246,248,255,0.02);
  --surface-2: rgba(246,248,255,0.05);
  --border-1: rgba(246,248,255,0.12);
  --border-2: rgba(246,248,255,0.20);
  --bg-glow-1: radial-gradient(900px 560px at 18% 8%, rgba(58,123,255,0.16), transparent 60%);
  --bg-glow-2: radial-gradient(820px 520px at 88% 18%, rgba(168,255,42,0.08), transparent 62%);
  --bg-glow-3: radial-gradient(760px 520px at 22% 96%, rgba(246,248,255,0.04), transparent 58%);
  --bg-grid-size: 84px;
}

[data-deck-style="academic"] {
  --bg: #070707;
  --fg: #F7F5F2;
  --primary: #E0B36C;
  --primary-dark: #B88F52;
  --accent: #E0B36C;
  --muted: rgba(247,245,242,0.58);
  --subtle: rgba(247,245,242,0.14);
  --subtle-2: rgba(247,245,242,0.08);
  --surface-1: rgba(247,245,242,0.02);
  --surface-2: rgba(247,245,242,0.05);
  --border-1: rgba(247,245,242,0.12);
  --border-2: rgba(247,245,242,0.20);
  --font-body: 'Newsreader', ui-serif, Georgia, serif;
  --font-display: 'Newsreader', ui-serif, Georgia, serif;
  --bg-glow-1: radial-gradient(900px 560px at 20% 8%, rgba(224,179,108,0.14), transparent 62%);
  --bg-glow-2: radial-gradient(820px 520px at 86% 18%, rgba(247,245,242,0.06), transparent 62%);
  --bg-glow-3: radial-gradient(760px 520px at 20% 96%, rgba(224,179,108,0.06), transparent 58%);
  --bg-grid-size: 96px;
  --bg-dots-size: 20px;
}

[data-deck-style="minimal"] {
  --bg: #0B0B0B;
  --fg: #FFFFFF;
  --primary: rgba(255,255,255,0.92);
  --primary-dark: rgba(255,255,255,0.78);
  --accent: rgba(255,255,255,0.92);
  --muted: rgba(255,255,255,0.62);
  --subtle: rgba(255,255,255,0.10);
  --subtle-2: rgba(255,255,255,0.06);
  --surface-1: transparent;
  --surface-2: rgba(255,255,255,0.02);
  --border-1: rgba(255,255,255,0.10);
  --border-2: rgba(255,255,255,0.16);
  --bg-glow-1: none;
  --bg-glow-2: none;
  --bg-glow-3: none;
  --bg-grid: none;
  --bg-dots: none;
  --bg-grid-size: 120px;
}

/* Keep brand color where needed */
[data-brand="zoopa"][data-deck-style] { --primary: #FF6B00; --accent: #FF6B00; }

/* Style-specific slide surface tuning */
[data-deck-style="minimal"] .slide {
  background: transparent;
  box-shadow: none;
}

[data-deck-style="minimal"] .slide::after { display: none; }
[data-deck-style="minimal"] .slide::before { opacity: 0.28; }

/* ─── INDEX VIEW ────────────────────────────────────────────────────────── */
.index { display: none; width: min(1200px, 100%); }
.index.active { display: block; }

.index__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-top: 24px;
}

.index__card {
  border: 1px solid var(--border-1);
  padding: 16px 18px;
  cursor: pointer;
  transition: all 0.25s var(--ease-out);
  position: relative;
  overflow: hidden;
  background: rgba(255,255,255,0.01);
  border-radius: var(--radius-md);
}

.index__card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 3px;
  height: 100%;
  background: var(--primary);
  transform: scaleY(0);
  transform-origin: bottom;
  transition: transform 0.25s var(--ease-out);
}

.index__card:hover {
  border-color: var(--primary);
  background: rgba(255,255,255,0.02);
}

.index__card:hover::before { transform: scaleY(1); }

.index__meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
}

.index__section {
  color: var(--primary);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.index__title {
  font-weight: 700;
  font-size: 14px;
  margin-top: 8px;
  line-height: 1.3;
}

/* ─── SIDEBAR MINIMAP ───────────────────────────────────────────────────── */
.sidebar {
  position: fixed;
  top: 0;
  right: 0;
  height: 100vh;
  width: min(340px, 90vw);
  background: rgba(0, 0, 0, 0.92);
  backdrop-filter: blur(20px);
  border-left: 1px solid var(--subtle);
  transform: translateX(100%);
  transition: transform 0.35s var(--ease-out);
  z-index: 100;
  padding: 24px 20px;
  overflow-y: auto;
}

.sidebar.open { transform: translateX(0); }

.sidebar__title {
  font-weight: 800;
  font-size: 13px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 8px;
}

.sidebar__hint {
  color: var(--muted);
  font-size: 11px;
  margin-bottom: 20px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--subtle);
}

.sidebar__section { margin-top: 20px; }

.sidebar__sectionName {
  color: var(--primary);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 10px;
}

.sidebar__item {
  display: flex;
  gap: 12px;
  align-items: center;
  padding: 10px 12px;
  cursor: pointer;
  transition: all 0.2s ease;
  border-left: 2px solid transparent;
  margin-left: -2px;
}

.sidebar__item:hover {
  background: rgba(255,255,255,0.03);
  border-left-color: var(--muted);
}

.sidebar__item.active {
  background: rgba(255,255,255,0.03);
  background: color-mix(in srgb, var(--primary) 14%, transparent);
  border-left-color: var(--primary);
}

.sidebar__num {
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 11px;
  color: var(--muted);
}

.sidebar__item.active .sidebar__num { color: var(--primary); }

.sidebar__txt {
  font-weight: 500;
  font-size: 13px;
}

.sidebar__edge {
  position: fixed;
  top: 0;
  right: 0;
  height: 100vh;
  width: 20px;
  z-index: 99;
}

/* ─── TYPOGRAPHY ────────────────────────────────────────────────────────── */
.kicker {
  font-family: var(--font-mono);
  color: var(--primary);
  font-weight: 700;
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  display: inline-block;
}

.h1 {
  font-family: var(--font-display);
  font-size: clamp(36px, 5vw, 52px);
  font-weight: 800;
  line-height: 1.0;
  margin: 12px 0 0;
  letter-spacing: -0.03em;
  text-wrap: balance;
}

.h2 {
  font-family: var(--font-display);
  font-size: clamp(24px, 3vw, 32px);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
  text-wrap: balance;
}

.h3 {
  font-family: var(--font-display);
  font-size: clamp(18px, 2vw, 22px);
  font-weight: 600;
  line-height: 1.25;
}

.p {
  color: rgba(247,248,248,0.78);
  color: color-mix(in srgb, var(--fg) 78%, transparent);
  font-size: 17px;
  line-height: 1.65;
  font-weight: 400;
}

.p strong {
  font-weight: 600;
  color: var(--fg);
}

/* Dramatic Typography Classes */
.outlined {
  color: transparent;
  -webkit-text-stroke: 2px var(--primary);
}

.primary { color: var(--primary); }

.light { font-weight: 100; }
.thin { font-weight: 200; }
.regular { font-weight: 400; }
.medium { font-weight: 500; }
.semibold { font-weight: 600; }
.bold { font-weight: 700; }
.extrabold { font-weight: 800; }
.black { font-weight: 900; }

/* ─── VISUAL ACCENTS ────────────────────────────────────────────────────── */
.divider {
  height: 1px;
  background: linear-gradient(90deg, var(--primary) 0%, transparent 100%);
  margin: 32px 0;
  width: 200px;
}

.marker {
  display: inline-block;
  width: 4px;
  height: 4px;
  background: var(--primary);
  margin-right: 12px;
}

.line-accent {
  position: absolute;
  width: 100%;
  height: 1px;
  background: var(--subtle);
}

/* ─── RESPONSIVE ────────────────────────────────────────────────────────── */
@media (max-width: 1024px) {
  .index__grid { grid-template-columns: repeat(2, 1fr); }
  .slide { padding: 32px 36px; }
}

@media (max-width: 900px) {
  .deck__header {
    gap: 14px;
    align-items: flex-start;
  }

  .deck__logo {
    height: 30px;
  }

  .sidebar {
    width: min(86vw, 380px);
  }

  .sidebar__edge {
    width: 34px;
  }
}

@media (max-width: 768px) {
  .index__grid { grid-template-columns: 1fr; }
  .deck__header { padding: 16px 20px; }
  .slides { padding: 24px 16px; }
  .slide { padding: 24px 20px; }
  .h1 { font-size: 32px; }
}

@media (max-width: 640px) {
  body {
    font-size: 15px;
  }

  .deck__header {
    padding: 14px 14px;
  }

  .deck__h1 {
    font-size: 13px;
  }

  .deck__h2 {
    font-size: 11px;
  }

  .slides {
    align-items: stretch;
    padding: 16px 10px;
    min-height: calc(100vh - 84px);
  }

  .slide {
    min-height: auto;
    padding: 16px 14px;
  }

  .h1 {
    font-size: clamp(24px, 8.2vw, 30px);
  }

  .p {
    font-size: 15px;
    line-height: 1.5;
  }

  .sidebar {
    width: 100vw;
  }
}

/* ─── UTILITY CLASSES ───────────────────────────────────────────────────── */
.mt-0 { margin-top: 0; }
.mt-1 { margin-top: 8px; }
.mt-2 { margin-top: 16px; }
.mt-3 { margin-top: 24px; }
.mt-4 { margin-top: 32px; }
.mt-5 { margin-top: 48px; }

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: 8px; }
.mb-2 { margin-bottom: 16px; }
.mb-3 { margin-bottom: 24px; }

.text-center { text-align: center; }
.text-right { text-align: right; }
.text-muted { color: var(--muted); }
.text-primary { color: var(--primary); }
.font-bold { font-weight: 700; }
.font-black { font-weight: 900; }

/* Reveal animation classes */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.6s var(--ease-out);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.delay-1 { transition-delay: 0.1s; }
.delay-2 { transition-delay: 0.2s; }
.delay-3 { transition-delay: 0.3s; }
.delay-4 { transition-delay: 0.4s; }

/* ─── LUCIDE ICONS ──────────────────────────────────────────────────────── */
.lucide {
  width: 1em;
  height: 1em;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
  fill: none;
  vertical-align: middle;
}

.icon-sm { width: 16px; height: 16px; }
.icon-md { width: 24px; height: 24px; }
.icon-lg { width: 32px; height: 32px; }
.icon-xl { width: 48px; height: 48px; }