/* ========================================
   Dify × AISPEECH · Pop Art / Comic Style
   ======================================== */

:root {
  /* Pop Art Palette */
  --pop-yellow: #FFE900;
  --pop-red: #FF3333;
  --pop-cyan: #00FFFF;
  --pop-blue: #3366FF;
  --pop-magenta: #FF00FF;
  --pop-green: #33CC33;
  --pop-black: #000000;
  --pop-white: #FFFFFF;

  /* Mappings */
  --dify-blue: var(--pop-blue);
  --dify-blue-light: #E0EFFF; 
  --dify-gradient: linear-gradient(45deg, var(--pop-blue), var(--pop-cyan));
  
  --paper: var(--pop-white);
  --paper-2: var(--pop-white);
  --ink: var(--pop-black);
  
  --muted: #333333;
  --line: var(--pop-black);

  /* Typography */
  --font-sans: 'Inter', 'Noto Sans SC', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.75rem;
  --space-md: 1.5rem;
  --space-lg: 2rem;
  --space-xl: 3rem;
  --space-2xl: 4rem;

  /* Shapes - Sharp Edges for Pop Art */
  --radius-sm: 0;
  --radius-md: 0;
  --radius-lg: 0;
  --radius-xl: 0;
  --radius-full: 0; 

  /* Shadows - Hard Shadows */
  --shadow-color: var(--pop-black);
  --shadow-sm: 4px 4px 0 var(--shadow-color);
  --shadow-md: 8px 8px 0 var(--shadow-color);
  --shadow-lg: 12px 12px 0 var(--shadow-color);
  
  /* Borders */
  --border-width: 3px;
  --border-standard: var(--border-width) solid var(--pop-black);
}

/* ========== Base Reset & Background ========== */
* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: var(--font-sans);
  color: var(--ink);
  background-color: var(--pop-yellow);
  /* Halftone Pattern */
  background-image: 
      radial-gradient(circle, #ddd 10%, transparent 11%),
      radial-gradient(circle, #ddd 10%, transparent 11%);
  background-size: 30px 30px;
  background-position: 0 0, 15px 15px;
  background-color: #fff;
}

/* Make text stronger */
strong {
  font-weight: 900;
  color: var(--pop-black);
  background: var(--pop-yellow);
  padding: 0 4px;
  box-shadow: 2px 2px 0 var(--pop-black);
}

/* ========== Reveal.js Overrides ========== */
.reveal {
  font-family: var(--font-sans);
  font-size: 28px; 
  color: var(--ink);
}

.reveal .slides > section,
.reveal .slides > section > section {
  height: 100%;
  box-sizing: border-box;
  padding: 40px;
  display: flex !important;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.reveal h1, .reveal h2, .reveal h3, .reveal h4 {
  font-family: var(--font-sans);
  font-weight: 900;
  text-transform: uppercase;
  color: var(--pop-black);
  line-height: 1.1;
  margin-bottom: 1rem;
}

.reveal h1 {
  font-size: 3.5em;
  text-shadow: 4px 4px 0 var(--pop-yellow);
  text-shadow: 5px 5px 0 var(--pop-cyan);
}

.reveal h2 {
  font-size: 2.2em;
  background: var(--pop-yellow);
  display: inline-block;
  border: var(--border-standard);
  padding: 10px 20px;
  box-shadow: 6px 6px 0 var(--pop-black);
  transform: rotate(-1deg);
}

.reveal h3 {
  font-size: 1.4em;
  font-weight: 800;
}

.reveal p { 
  line-height: 1.6; 
  color: var(--pop-black);
  font-weight: 500;
}

.reveal ul, .reveal ol { margin: 1rem 0; }
.reveal li { margin-bottom: 0.42em; }
.reveal .slides section * { max-width: 100%; }

/* ========== Components ========== */

/* Card */
.card {
  width: min(94vw, 1600px);
  margin: 0 auto;
  padding: 20px;
  position: relative;
  text-align: left;
}
.card > * { position: relative; z-index: 1; }

.card-ghost {
  background: var(--pop-white);
  border: var(--border-standard);
  border-radius: 0;
  padding: 30px;
  box-shadow: var(--shadow-md);
  transition: transform 0.2s;
}

.card-ghost:hover {
  transform: translate(-4px, -4px);
  box-shadow: 12px 12px 0 var(--pop-black);
}

.card-ghost h3 {
  display: flex;
  align-items: center;
  gap: 12px;
}

.card-ghost h3 i {
  background: var(--pop-black);
  color: var(--pop-yellow);
  border: 2px solid var(--pop-black);
  border-radius: 0;
  width: 48px; 
  height: 48px;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 3px 3px 0 var(--pop-cyan);
}

/* Stack Label */
.stack-label {
  display: inline-block;
  padding: 8px 16px;
  background: var(--pop-black);
  color: var(--pop-white);
  font-weight: 900;
  font-size: 0.9rem;
  text-transform: uppercase;
  border: 2px solid var(--pop-black);
  margin-bottom: 20px;
  box-shadow: 4px 4px 0 var(--pop-magenta);
  transform: rotate(1deg);
}

/* Badge */
.badge, .pill {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 6px 10px;
  border: 2px solid var(--pop-black);
  border-radius: 0;
  background: var(--pop-white);
  color: var(--pop-black);
  font-weight: 700;
  box-shadow: 2px 2px 0 var(--pop-black);
}
.pill-row { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 12px; }

.pill--blue {
  background: var(--pop-cyan);
}

/* Ghost Number */
.ghost-num {
  position: absolute;
  top: 10px;
  right: 20px;
  font-family: var(--font-mono);
  font-weight: 900;
  font-size: 6rem;
  line-height: 1;
  color: transparent;
  -webkit-text-stroke: 2px rgba(0,0,0,0.1);
  z-index: 0;
}

/* Grids */
.grid-2, .grid-3, .grid-4 {
  display: grid;
  gap: 24px;
  margin-top: 24px;
}
.grid-2 { grid-template-columns: 1fr 1fr; }
.grid-3 { grid-template-columns: 1fr 1fr 1fr; }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

.community-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 28px;
}
.community-card {
  background: var(--pop-white);
  border: var(--border-standard);
  padding: 24px;
  box-shadow: var(--shadow-md);
  transition: transform 0.2s;
}
.community-card:hover {
  transform: translate(-3px, -3px);
  box-shadow: 10px 10px 0 var(--pop-black);
}
.community-label {
  font-size: 0.68em;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
  display: inline-flex;
  align-items: center;
  gap: 10px;
}
.community-label i {
  background: var(--pop-black);
  color: var(--pop-yellow);
  border: 2px solid var(--pop-black);
  width: 38px;
  height: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 3px 3px 0 var(--pop-cyan);
}
.community-value {
  font-size: 2.4em;
  font-weight: 900;
  margin: 14px 0 6px;
  color: var(--pop-black);
}
.community-subtext {
  font-size: 0.85em;
  color: var(--muted);
  font-weight: 600;
}

/* Flow Diagram */
.flow {
  border: var(--border-standard);
  background: var(--pop-white);
  border-radius: 0;
  box-shadow: var(--shadow-lg);
  gap: 20px;
  padding: 20px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
}
.flow--compact { grid-template-columns: repeat(6, 1fr); }

.flow-step {
  border: var(--border-standard);
  background: #fff;
  border-radius: 0;
  box-shadow: 4px 4px 0 var(--pop-black);
  padding: 14px 12px;
  position: relative;
}
.flow-step h4 { font-size: 0.95em; display: flex; align-items: center; gap: 10px; }

.flow-step h4 i {
  width: 34px; height: 34px; display: inline-flex; align-items: center; justify-content: center;
  background: var(--pop-red);
  color: white;
  border: 2px solid var(--pop-black);
  border-radius: 0;
}
.flow-arrow { display: none; }

/* Hero Specifics */
.hero { text-align: center; }
.hero h1 {
  background: none;
  -webkit-text-fill-color: initial;
  color: var(--pop-black);
  text-shadow: 6px 6px 0 var(--pop-yellow);
}

.hero--dark h1 {
  color: var(--pop-white);
  text-shadow: 6px 6px 0 var(--pop-black);
  -webkit-text-stroke: 3px var(--pop-black);
}

.hero--dark p {
  color: var(--pop-black);
  background: var(--pop-white);
  display: inline-block;
  padding: 10px;
  border: 3px solid var(--pop-black);
  box-shadow: 6px 6px 0 var(--pop-black);
  font-weight: 700;
}

/* Stats */
.stats-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 18px; }
.stat-item {
  border: var(--border-standard);
  background: var(--pop-cyan);
  box-shadow: var(--shadow-md);
  border-radius: 0;
  padding: 18px;
  text-align: center;
}
.stat-item .number {
  font-size: 2.4rem; font-weight: 800;
  color: var(--pop-black);
  text-shadow: 2px 2px 0 var(--pop-white);
}

/* Formulas */
.formula-panel {
  border: var(--border-standard);
  box-shadow: var(--shadow-md);
  background: #fff;
  padding: 22px;
}
.formula-kicker {
  display: inline-block;
  background: var(--pop-black);
  color: var(--pop-yellow);
  padding: 4px 8px;
  font-weight: 800; text-transform: uppercase;
}
.formula-inline {
  border: 2px dashed var(--pop-black);
  background: var(--pop-yellow);
  border-radius: 0;
  padding: 14px;
}
.formula-big { font-size: 1.25em; font-weight: 700; margin: 10px 0; }

/* KPI Cards */
.kpi-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; }
.kpi-card {
  border: var(--border-standard);
  border-radius: 0;
  box-shadow: 6px 6px 0 var(--pop-black);
  background: var(--pop-white);
  padding: 16px;
  position: relative; overflow: hidden;
}
.kpi-badge {
  display: inline-flex; align-items: center; gap: 8px; padding: 6px 10px;
  background: var(--pop-black);
  color: var(--pop-white);
  border: none;
  border-radius: 0;
  font-weight: 700;
}
.kpi-badge i { color: var(--pop-yellow); }

.kpi-value {
  font-size: 2.25rem; font-weight: 900;
  color: var(--pop-blue);
  text-shadow: 2px 2px 0 var(--pop-black);
  margin-top: 10px;
}

/* Value Board */
.value-board {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  margin-top: 24px;
}
.value-tile {
  --accent: var(--pop-cyan);
  border: var(--border-standard);
  background: var(--pop-white);
  box-shadow: var(--shadow-md);
  padding: 16px 18px 18px;
  position: relative;
  overflow: hidden;
}
.value-tile::before {
  content: '';
  position: absolute;
  right: -24px;
  top: -24px;
  width: 120px;
  height: 120px;
  background: radial-gradient(circle, var(--accent) 30%, transparent 32%);
  background-size: 10px 10px;
  opacity: 0.35;
}
.value-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}
.value-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 10px;
  background: var(--accent);
  border: 2px solid var(--pop-black);
  font-weight: 900;
  font-size: 0.65em;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  box-shadow: 3px 3px 0 var(--pop-black);
}
.value-code {
  font-family: var(--font-mono);
  font-weight: 900;
  background: var(--pop-black);
  color: var(--pop-white);
  padding: 4px 8px;
  border: 2px solid var(--pop-black);
  box-shadow: 2px 2px 0 var(--accent);
  font-size: 0.7em;
}
.value-number {
  font-size: 2.4em;
  font-weight: 900;
  margin-top: 12px;
  color: var(--pop-black);
  text-shadow: 4px 4px 0 var(--accent);
  line-height: 1;
}
.value-title { font-weight: 800; margin-top: 8px; }
.value-foot {
  font-size: 0.75em;
  color: var(--muted);
  margin-top: 6px;
}
.value-meter {
  margin-top: 12px;
  height: 12px;
  border: 2px solid var(--pop-black);
  background: var(--pop-white);
  position: relative;
}
.value-meter::after {
  content: '';
  position: absolute;
  inset: 0;
  width: calc(var(--p) * 1%);
  background: var(--accent);
  border-right: 2px solid var(--pop-black);
}

/* Charts */
.bar-chart { display: grid; gap: 12px; margin-top: 14px; }
.bar-row { display: grid; grid-template-columns: 1fr 1.4fr auto; gap: 12px; align-items: center; }
.bar-track {
  background: white;
  border: 2px solid var(--pop-black);
  height: 20px;
  border-radius: 0;
  overflow: hidden;
}
.bar-fill {
  background: var(--pop-red);
  border-right: 2px solid var(--pop-black);
  border-radius: 0;
  height: 100%;
  box-shadow: none;
  background-image: linear-gradient(45deg, var(--pop-black) 25%, transparent 25%, transparent 50%, var(--pop-black) 50%, var(--pop-black) 75%, transparent 75%, transparent);
  background-size: 10px 10px;
  background-color: var(--pop-red);
  width: calc(var(--p) * 1%);
}

.bar-row:nth-child(1) .bar-fill { background-color: var(--pop-blue); }
.bar-row:nth-child(2) .bar-fill { background-color: var(--pop-magenta); }
.bar-row:nth-child(3) .bar-fill { background-color: var(--pop-yellow); }

/* KPI Lines */
.kpi-lines { display: grid; gap: 16px; margin-top: 16px; }
.kpi-lines--2 { grid-template-columns: repeat(2, 1fr); }
.kpi-line {
  border: var(--border-standard);
  background: var(--pop-white);
  border-radius: 0;
  box-shadow: var(--shadow-sm);
  padding: 18px;
  display: grid; grid-template-columns: 1fr auto; grid-template-areas: "k v" "b b"; gap: 12px;
}
.kpi-key { grid-area: k; font-weight: 800; }
.kpi-val { grid-area: v; font-weight: 900; font-family: var(--font-mono); }
.kpi-spark {
  grid-area: b;
  border: 1px solid var(--pop-black);
  background: white;
  height: 16px;
  border-radius: 0;
  position: relative;
}
.kpi-spark::after {
  content: ''; position: absolute; left: 0; top: 0; bottom: 0;
  background: var(--pop-green);
  border-right: 2px solid black;
  width: calc(var(--p) * 1%);
}

/* Loop Diagram */
.loop-diagram { display: flex; gap: 12px; align-items: center; flex-wrap: wrap; margin-top: 14px; }
.loop-step {
  display: inline-flex; align-items: center; gap: 10px; padding: 10px 12px;
  border: var(--border-standard);
  background: var(--pop-yellow);
  border-radius: 0;
  box-shadow: 4px 4px 0 var(--pop-black);
  font-weight: 800;
}
.loop-dot {
  width: 28px; height: 28px; display: inline-flex; align-items: center; justify-content: center;
  background: var(--pop-black);
  color: var(--pop-white);
  border-radius: 50%;
  border: 2px solid var(--pop-black);
}
.loop-arrow { color: var(--pop-black); }

/* Platform Grid */
.platform-grid { display: grid; grid-template-columns: 0.85fr 1.4fr 0.85fr; gap: 2rem; margin-top: 2rem; }
.platform-col {
  border: var(--border-standard);
  background: var(--pop-white);
  box-shadow: var(--shadow-md);
  border-radius: 0;
  padding: 22px;
}
.platform-title { font-weight: 900; margin-bottom: 10px; }
.platform-item {
  display: flex; align-items: center; gap: 10px; padding: 12px; margin-top: 10px;
  border: 2px solid var(--pop-black);
  background: var(--pop-cyan);
  border-radius: 0;
  box-shadow: 2px 2px 0 var(--pop-black);
  font-weight: 700;
}
.platform-core {
  border: var(--border-standard);
  background: var(--pop-yellow);
  box-shadow: var(--shadow-lg);
  border-radius: 0;
  padding: 24px;
}
.platform-core-items { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 16px; }
.platform-chip {
  display: flex; align-items: center; gap: 10px; padding: 14px;
  border: 2px solid var(--pop-black);
  background: white;
  border-radius: 0;
  box-shadow: 3px 3px 0 var(--pop-black);
  font-weight: 800;
}

/* Segments */
.segment {
  display: flex; align-items: center; gap: 12px; padding: 16px; margin-top: 14px;
  border: 2px solid var(--pop-black);
  background: var(--pop-white);
  border-radius: 0;
  box-shadow: 4px 4px 0 var(--pop-black);
  font-weight: 600;
}
.segment--strong {
  background: var(--pop-cyan);
}

/* Architecture Boxes */
.arch-diagram { margin-top: 18px; padding: 18px; border: 2px dashed var(--pop-black); background: rgba(255,255,255,0.8); }
.arch-row { display: flex; justify-content: center; gap: 12px; flex-wrap: wrap; margin-bottom: 12px; }
.arch-box {
  padding: 14px 16px; font-weight: 800; min-width: 140px; text-align: center;
  border: var(--border-standard);
  border-radius: 0;
  box-shadow: 4px 4px 0 var(--pop-black);
  background: white;
}
.arch-box.primary {
  background: var(--pop-magenta);
  color: white;
}
.arch-box.secondary {
  background: var(--pop-yellow);
}
.arch-arrow { font-size: 1.4rem; font-weight: 900; color: var(--pop-black); display: flex; align-items: center; justify-content: center; min-width: 30px; }

/* Timeline */
.timeline { display: flex; gap: 2rem; margin-top: 2rem; }
.timeline-item {
  flex: 1; padding: 2rem;
  border: var(--border-standard);
  box-shadow: var(--shadow-md);
  border-radius: 0;
  background: white;
}
.timeline-item h4 {
  background: var(--pop-black);
  color: white;
  display: inline-block;
  padding: 4px 8px;
  margin-bottom: 8px;
}

/* Lists */
.reveal ul.list-dot { list-style: none; padding-left: 0; }
.reveal ul.list-dot li { position: relative; padding-left: 28px; margin-bottom: 12px; }
.reveal ul.list-dot li::before {
  content: ''; position: absolute; left: 0; top: 0.5em; width: 12px; height: 12px;
  background: var(--pop-black);
  box-shadow: 2px 2px 0 var(--pop-cyan);
}

/* Scene cards */
.scene-cards { display: grid; gap: 12px; margin-top: 14px; }
.scene-card {
  display: flex; gap: 12px; align-items: flex-start; padding: 14px;
  border: var(--border-standard);
  background: white;
  box-shadow: 4px 4px 0 var(--pop-black);
}
.scene-card i {
  width: 40px; height: 40px; display: inline-flex; align-items: center; justify-content: center;
  background: var(--pop-black); color: var(--pop-yellow);
}
.scene-title { font-weight: 800; }
.scene-sub { font-size: 0.9em; color: #555; }

/* Fixed Elements - Layout & Style */
.deck-logo {
  position: fixed;
  top: 26px;
  left: 28px;
  z-index: 100;
  display: flex;
  align-items: center;
  gap: 12px;
  background: white;
  border: 2px solid black;
  padding: 5px 10px;
  box-shadow: 4px 4px 0 black;
}
.deck-logo img { height: 22px; width: auto; }
.deck-logo span { font-weight: 700; color: black; font-size: 0.95rem; }

.lang-switch {
  position: fixed;
  top: 24px;
  right: 28px;
  z-index: 110;
  display: flex;
  align-items: center;
  gap: 8px;
  background: white;
  border: 2px solid black;
  padding: 5px;
  box-shadow: 4px 4px 0 black;
  font-weight: 700; font-size: 0.9rem;
}
.lang-switch a { text-decoration: none; color: black; opacity: 0.5; }
.lang-switch a.active { opacity: 1; background: var(--pop-yellow); padding: 0 4px; color: black; }

.slide-meta {
  position: fixed;
  bottom: 22px;
  left: 28px;
  z-index: 100;
  font-size: 0.8rem;
  color: black;
  font-weight: 700;
  background: white;
  padding: 4px 8px;
  border: 2px solid black;
  box-shadow: 3px 3px 0 black;
}

/* Tension Grid */
.tension-grid { display: grid; grid-template-columns: 1.15fr 0.85fr; gap: 2rem; margin-top: 2rem; height: 100%; }

/* Custom Shape for Q&A Background */
section[data-background-color="#0033ff"] {
  background-color: var(--pop-blue) !important;
  background-image: 
    radial-gradient(var(--pop-white) 20%, transparent 20%),
    radial-gradient(var(--pop-white) 20%, transparent 20%);
  background-size: 40px 40px;
}

/* Responsive */
@media (max-width: 1024px) {
  .grid-2, .grid-3, .grid-4, .community-grid { grid-template-columns: 1fr; }
  .card { padding: 10px; width: 100vw; }
  .reveal h1 { font-size: 2.5em; }
  .tension-grid { grid-template-columns: 1fr; }
  .platform-grid { grid-template-columns: 1fr; }
  .stats-row { grid-template-columns: 1fr; }
  .value-board { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 720px) {
  .value-board { grid-template-columns: 1fr; }
}