/**
 * ===========================================================================
 * SLIDE DECK SYSTEM STYLES — AI Agent for Teachers
 * Kiosk-style Presentation UI for *.slides.html
 * ===========================================================================
 */

:root {
  --card-fg: #172744;
  --card-muted: #5a6677;
}

body {
  height: 100%;
  background: var(--slide-bg);
  color: var(--slide-fg);
  font: var(--base-font)/1.5 var(--font-sans);
  overflow: hidden;
}

html[data-lang="en"] .lang-id {
  display: none !important;
}

html[data-lang="id"] .lang-en {
  display: none !important;
}

/* ===========================================================================
   STAGE & SLIDES
   =========================================================================== */
.stage {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: stretch;
  justify-content: center;
  padding: 72px 32px 104px;
  perspective: 1200px;
}

.slide {
  display: none;
  width: min(var(--max-w), calc(100vw - 64px));
  max-height: calc(100vh - 176px);
  overflow: auto;
  background: var(--slide-card);
  color: var(--slide-card-fg);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-slide);
  margin: auto;
  padding: var(--slide-pad-y) var(--slide-pad-x) calc(var(--slide-pad-y) + 8px);
  animation: slideIn var(--transition-slow);
  scrollbar-width: thin;
}

.slide.wide {
  --max-w: 1640px;
  --slide-pad-x: 72px;
}

.slide.tall {
  --slide-pad-y: 56px;
}

.slide.active {
  display: block;
}

@keyframes slideIn {
  from {
    opacity: 0;
    transform: translateY(14px) scale(0.985);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(18px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.slide.active .stagger > * {
  animation: slideInRight 0.35s cubic-bezier(0.2, 0.7, 0.2, 1) backwards;
}

.slide.active .stagger > *:nth-child(1) { animation-delay: 0.05s; }
.slide.active .stagger > *:nth-child(2) { animation-delay: 0.12s; }
.slide.active .stagger > *:nth-child(3) { animation-delay: 0.19s; }
.slide.active .stagger > *:nth-child(4) { animation-delay: 0.26s; }
.slide.active .stagger > *:nth-child(5) { animation-delay: 0.33s; }
.slide.active .stagger > *:nth-child(6) { animation-delay: 0.40s; }
.slide.active .stagger > *:nth-child(7) { animation-delay: 0.47s; }
.slide.active .stagger > *:nth-child(8) { animation-delay: 0.54s; }
.slide.active .stagger > *:nth-child(n+9) { animation-delay: 0.60s; }

/* ===========================================================================
   COVER (Dark Hero Slide)
   =========================================================================== */
.slide.cover {
  background: linear-gradient(135deg, var(--slide-bg) 0%, #1e3a6b 55%, #2a4f8a 100%);
  color: var(--slide-fg);
  display: none;
  padding: var(--slide-pad-y) var(--slide-pad-x);
}

.slide.cover.active {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.slide.cover.active .stagger > * {
  animation: slideInRight 0.45s cubic-bezier(0.2, 0.7, 0.2, 1) backwards;
}

.slide.cover .hero {
  display: flex;
  align-items: center;
  gap: var(--space-6);
}

.slide.cover .logo-plate {
  display: inline-flex;
  background: #ffffff;
  padding: 10px 12px;
  border-radius: var(--radius-lg);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.35);
}

.slide.cover .logo-plate img {
  display: block;
  width: 88px;
  height: 88px;
}

.slide.cover h1 {
  font-size: calc(64px * var(--heading-scale));
  line-height: 1.05;
  margin: var(--space-4) 0 var(--space-3);
  letter-spacing: -0.012em;
}

.slide.cover .lede {
  font-size: calc(23px * var(--heading-scale));
  color: #d6deee;
  max-width: 860px;
  margin: 0 0 var(--space-2);
  line-height: 1.45;
}

.slide.cover .meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-top: var(--space-3);
}

.slide.cover .chip {
  background: var(--slide-line);
  border: 1px solid var(--slide-line-strong);
  color: var(--slide-fg);
  padding: 6px 14px;
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  letter-spacing: 0.02em;
}

.slide.cover .accent-line {
  height: 4px;
  width: 96px;
  background: var(--slide-accent);
  border-radius: 2px;
  margin: var(--space-3) 0 0;
}

.slide.cover .footer-row {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: var(--space-5);
  font-size: var(--text-sm);
  color: #b6c1d4;
}

.slide.cover .footer-row kbd {
  background: var(--slide-line);
  border: 1px solid var(--slide-line-strong);
  padding: 3px 7px;
  border-radius: var(--radius-xs);
  font: 600 var(--text-xs) var(--font-mono);
  color: var(--slide-fg);
}

/* ===========================================================================
   SLIDE TYPOGRAPHY (Light Slides)
   =========================================================================== */
.slide h2 {
  font-size: calc(36px * var(--heading-scale));
  line-height: 1.12;
  margin: 0 0 var(--space-2);
  letter-spacing: -0.012em;
}

.slide .eyebrow {
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--slide-card-muted);
  font-weight: 700;
  margin: 0 0 var(--space-2);
}

.slide h2 + .lede {
  color: var(--slide-card-muted);
  font-size: calc(19px * var(--heading-scale));
  max-width: 880px;
  margin: 0 0 var(--space-4);
}

.slide h3 {
  font-size: var(--text-xl);
  margin: var(--space-4) 0 var(--space-2);
  color: var(--slide-card-fg);
}

.slide p {
  margin: var(--space-2) 0 var(--space-3);
}

.slide ul,
.slide ol {
  margin: var(--space-2) 0 var(--space-3) var(--space-6);
  padding: 0;
}

.slide li {
  margin: var(--space-1) 0;
}

.slide blockquote {
  margin: var(--space-3) 0;
  padding: var(--space-3) var(--space-4);
  border-left: 4px solid var(--slide-accent);
  background: #fff7e6;
  border-radius: var(--radius-sm);
  color: #4a3a08;
}

/* ===========================================================================
   SLIDE TABLES & MAP CARDS
   =========================================================================== */
table {
  width: 100%;
  border-collapse: collapse;
  margin: var(--space-2) 0 var(--space-2);
  font-size: var(--text-base);
  border: 1px solid #e3e7f0;
  border-radius: var(--radius-lg);
  overflow: hidden;
  color: var(--slide-card-fg);
  background: #ffffff;
}

th,
td {
  padding: 10px 12px;
  text-align: left;
  border-bottom: 1px solid #eef1f7;
  vertical-align: top;
  color: var(--slide-card-fg);
}

th {
  background: #f3f6fc;
  color: #172744;
  font-weight: 700;
}

td {
  color: #1a2233;
}

tr:last-child td {
  border-bottom: 0;
}

.map-card {
  background: #fbfcff;
  border: 1px solid #e3e7f0;
  border-radius: var(--radius-lg);
  padding: var(--space-2);
  overflow: auto;
}

.map-card svg {
  display: block;
  margin: 0 auto;
  max-width: 100%;
  height: auto;
}

/* ===========================================================================
   CARD GRIDS & STATS
   =========================================================================== */
.grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-4);
  margin-top: var(--space-3);
}

.grid.cols-3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.grid.cols-4 {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.card {
  background: #fbfcff;
  border: 1px solid #e3e7f0;
  border-radius: var(--radius-lg);
  padding: var(--space-3) var(--space-4);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.card:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(30, 95, 191, 0.10);
}

.card .num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: var(--radius-md);
  background: var(--slide-accent-2);
  color: #ffffff;
  font-weight: 800;
  font-size: var(--text-sm);
  margin-bottom: var(--space-1);
}

.card .title {
  font-weight: 700;
  margin: 0 0 var(--space-1);
  font-size: var(--text-lg);
}

.card .body {
  font-size: var(--text-sm);
  color: #48546a;
  margin: 0;
  line-height: 1.55;
}

.card.accent-gold .num {
  background: var(--slide-accent);
  color: var(--slide-accent-fg);
}

.card.accent-purple .num {
  background: var(--slide-accent-3);
  color: #ffffff;
}

.card.accent-green .num {
  background: var(--slide-good);
  color: #ffffff;
}

.card.accent-red .num {
  background: var(--slide-warn);
  color: #ffffff;
}

.stat-row {
  display: flex;
  gap: var(--space-3);
  flex-wrap: wrap;
  margin-top: var(--space-3);
}

.stat {
  flex: 1 1 160px;
  background: linear-gradient(180deg, #ffffff, #f3f6fc);
  border: 1px solid #e3e7f0;
  border-radius: var(--radius-lg);
  padding: var(--space-3) var(--space-4);
  text-align: center;
}

.stat .n {
  font-size: var(--text-4xl);
  font-weight: 800;
  color: var(--slide-accent-2);
  line-height: 1;
}

.stat .l {
  font-size: var(--text-xs);
  color: var(--slide-card-muted);
  margin-top: var(--space-1);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 700;
}

.cta-next {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 12px var(--space-4);
  background: var(--slide-accent-2);
  color: #ffffff;
  text-decoration: none;
  border-radius: var(--radius-lg);
  font-weight: 700;
  transition: transform var(--transition-fast), background var(--transition-fast);
}

.cta-next:hover {
  background: #154a99;
  transform: translateY(-1px);
}

.cta-next.secondary,
.cta-next[style*="var(--card-fg)"],
.cta-next[style*="var(--slide-card-fg)"] {
  background: #1e293b !important;
  color: #ffffff !important;
}

.cta-next.secondary:hover,
.cta-next[style*="var(--card-fg)"]:hover,
.cta-next[style*="var(--slide-card-fg)"]:hover {
  background: #0f172a !important;
}

kbd {
  display: inline-block;
  background: var(--slide-line);
  border: 1px solid var(--slide-line-strong);
  padding: 1px 6px;
  border-radius: var(--radius-xs);
  font: 600 var(--text-xs) var(--font-mono);
  color: var(--slide-fg);
  margin: 0 2px;
}

/* ===========================================================================
   CHROME HEADER
   =========================================================================== */
.chrome {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--space-5);
  z-index: 10;
  background: rgba(15, 26, 46, 0.65);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--slide-line);
}

.chrome .left,
.chrome .right {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  min-width: 0;
}

.pill-counter {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 12px;
  background: var(--slide-line);
  border: 1px solid var(--slide-line-strong);
  border-radius: var(--radius-full);
  font: 600 var(--text-xs) var(--font-mono);
  color: #dfe7f4;
}

.pill-counter .now {
  color: var(--slide-accent);
}

.crumbs {
  color: #cbd3e3;
  font-size: var(--text-sm);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.toggle {
  display: inline-flex;
  align-items: stretch;
  border: 1px solid rgba(255, 255, 255, 0.20);
  border-radius: var(--radius-full);
  padding: 3px;
  background: rgba(255, 255, 255, 0.04);
}

.toggle button {
  appearance: none;
  background: transparent;
  border: 0;
  color: #b6c1d4;
  padding: 5px 14px;
  border-radius: var(--radius-full);
  font: inherit;
  font-weight: 700;
  cursor: pointer;
  letter-spacing: 0.05em;
  font-size: var(--text-xs);
}

.toggle button[aria-pressed="true"] {
  background: var(--slide-accent);
  color: var(--slide-accent-fg);
}

.toggle button:focus-visible {
  outline: 2px solid var(--slide-accent);
  outline-offset: 2px;
}

/* ===========================================================================
   FOOTER NAVIGATION BAR
   =========================================================================== */
.nav-bar {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 14px 22px 18px;
  z-index: 10;
  pointer-events: none;
  background: linear-gradient(180deg, transparent, rgba(15, 26, 46, 0.85) 40%);
}

.nav-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  max-width: 1100px;
  margin: 0 auto;
  pointer-events: auto;
}

.arrow {
  appearance: none;
  border: 1px solid rgba(255, 255, 255, 0.22);
  color: var(--slide-fg);
  background: rgba(255, 255, 255, 0.06);
  width: 54px;
  height: 54px;
  border-radius: var(--radius-full);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: transform var(--transition-fast), background var(--transition-fast), border-color var(--transition-fast);
  backdrop-filter: blur(6px);
}

.arrow:hover {
  background: rgba(255, 255, 255, 0.14);
  transform: scale(1.06);
}

.arrow:active {
  transform: scale(0.96);
}

.arrow:disabled {
  opacity: 0.35;
  cursor: not-allowed;
  transform: none;
}

.arrow:focus-visible {
  outline: 2px solid var(--slide-accent);
  outline-offset: 2px;
}

.arrow svg {
  width: 22px;
  height: 22px;
}

.dots {
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
  justify-content: center;
}

.dots button {
  appearance: none;
  border: 0;
  padding: 0;
  width: 11px;
  height: 11px;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.30);
  cursor: pointer;
  transition: background var(--transition-fast), transform var(--transition-fast);
}

.dots button[aria-current="true"] {
  background: var(--slide-accent);
  transform: scale(1.4);
}

.dots button:hover {
  background: rgba(255, 255, 255, 0.55);
}

.dots button:focus-visible {
  outline: 2px solid var(--slide-accent);
  outline-offset: 2px;
}

.help {
  position: absolute;
  right: 22px;
  bottom: 88px;
  font-size: var(--text-xs);
  color: var(--slide-muted);
  background: rgba(15, 26, 46, 0.80);
  border: 1px solid var(--slide-line);
  padding: 6px 12px;
  border-radius: var(--radius-md);
  pointer-events: none;
  opacity: 0;
  transform: translateY(6px);
  transition: opacity var(--transition-normal), transform var(--transition-normal);
}

.help.show {
  opacity: 1;
  transform: translateY(0);
}

/* ===========================================================================
   RESPONSIVE (SLIDES)
   =========================================================================== */
@media (max-width: 780px) {
  .stage {
    padding: 60px 16px 110px;
  }

  .slide {
    padding: 28px 22px 30px;
  }

  .slide.cover h1 {
    font-size: 36px;
  }

  .grid,
  .grid.cols-3,
  .grid.cols-4 {
    grid-template-columns: 1fr;
  }

  .arrow {
    width: 46px;
    height: 46px;
  }
}

/* ===========================================================================
   PRINT (SLIDES)
   =========================================================================== */
@media print {
  .chrome,
  .nav-bar,
  .help {
    display: none !important;
  }

  html,
  body {
    overflow: visible;
    height: auto;
    background: #ffffff;
    color: #000000;
  }

  .stage {
    display: block;
    padding: 0;
    position: static;
  }

  .slide {
    display: block !important;
    box-shadow: none;
    margin: 12mm auto;
    max-height: none;
    page-break-after: always;
  }

  .slide.cover {
    background: #f5f5f5;
    color: #000000;
    display: flex !important;
  }
}