/* ==========================================================================
   Tema e Estilos da Apresentação - Transformações Geométricas 2D
   Fidelidade ao LaTeX Beamer (Tema Warsaw) com suporte a Tema Claro e Escuro
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Fira+Code:wght@400;500;600&family=Inter:wght@300;400;500;600;700;800&family=Plus+Jakarta+Sans:wght@600;700;800&display=swap');

/* ==========================================================================
   Variáveis de Cores e Temas
   ========================================================================== */

/* Tema Claro (Padrão LaTeX Beamer Warsaw) */
body.theme-light {
  --bg-page: #f0f3f8;
  --bg-slide: #ffffff;
  --bg-headline-top: #0e1e3e;
  --bg-headline-bot: #1b356b;
  --bg-footline: #112244;
  --text-headline: #ffffff;
  --text-headline-muted: #9bb3de;
  
  --title-gradient-start: #1b356b;
  --title-gradient-end: #2d55a1;
  --title-text: #ffffff;
  
  --text-main: #1e293b;
  --text-muted: #475569;
  --text-dim: #64748b;
  
  /* Blocos Beamer */
  --block-def-head-bg: linear-gradient(90deg, #1b356b 0%, #264a91 100%);
  --block-def-head-text: #ffffff;
  --block-def-body-bg: #edf3fc;
  --block-def-border: #9bb9e8;
  
  --block-ex-head-bg: linear-gradient(90deg, #165b33 0%, #217a46 100%);
  --block-ex-head-text: #ffffff;
  --block-ex-body-bg: #eaf6ef;
  --block-ex-border: #9bd3b2;
  
  --block-alert-head-bg: linear-gradient(90deg, #88181e 0%, #ab232b 100%);
  --block-alert-head-text: #ffffff;
  --block-alert-body-bg: #faebee;
  --block-alert-border: #f0a8ad;
  
  /* Canvas */
  --canvas-bg: #ffffff;
  --canvas-border: #cbd5e1;
  --canvas-card-bg: #f8fafc;
  --canvas-ctrl-bg: #edf2f9;
  --code-bg: #1e293b;
  --code-text: #f8fafc;
  
  --math-box-bg: #f1f5f9;
  --math-box-border: #cbd5e1;
  --math-box-hl-bg: #e0f2fe;
  --math-box-hl-border: #38bdf8;
  
  --table-head-bg: #1b356b;
  --table-head-text: #ffffff;
  --table-border: #cbd5e1;
  --table-row-hover: #f1f5f9;
}

/* Tema Escuro (Warsaw Dark Tech) */
body.theme-dark {
  --bg-page: #060a14;
  --bg-slide: #0b1120;
  --bg-headline-top: #060d1f;
  --bg-headline-bot: #0f1d3d;
  --bg-footline: #060d1f;
  --text-headline: #e2e8f0;
  --text-headline-muted: #64748b;
  
  --title-gradient-start: #172554;
  --title-gradient-end: #1e3a8a;
  --title-text: #ffffff;
  
  --text-main: #f1f5f9;
  --text-muted: #94a3b8;
  --text-dim: #64748b;
  
  /* Blocos Beamer */
  --block-def-head-bg: linear-gradient(90deg, #1e3a8a 0%, #2563eb 100%);
  --block-def-head-text: #ffffff;
  --block-def-body-bg: rgba(30, 58, 138, 0.2);
  --block-def-border: rgba(59, 130, 246, 0.4);
  
  --block-ex-head-bg: linear-gradient(90deg, #065f46 0%, #059669 100%);
  --block-ex-head-text: #ffffff;
  --block-ex-body-bg: rgba(6, 95, 70, 0.2);
  --block-ex-border: rgba(16, 185, 129, 0.4);
  
  --block-alert-head-bg: linear-gradient(90deg, #881337 0%, #e11d48 100%);
  --block-alert-head-text: #ffffff;
  --block-alert-body-bg: rgba(136, 19, 55, 0.2);
  --block-alert-border: rgba(244, 63, 94, 0.4);
  
  /* Canvas */
  --canvas-bg: #070c18;
  --canvas-border: rgba(99, 140, 255, 0.25);
  --canvas-card-bg: #0f172a;
  --canvas-ctrl-bg: #141e33;
  --code-bg: #070c18;
  --code-text: #e2e8f0;
  
  --math-box-bg: rgba(15, 23, 42, 0.7);
  --math-box-border: rgba(96, 165, 250, 0.25);
  --math-box-hl-bg: rgba(14, 116, 144, 0.25);
  --math-box-hl-border: #38bdf8;
  
  --table-head-bg: #1e293b;
  --table-head-text: #38bdf8;
  --table-border: rgba(255, 255, 255, 0.1);
  --table-row-hover: rgba(59, 130, 246, 0.1);
}

/* ---------------- Global Reset & Typography ---------------- */
* {
  box-sizing: border-box;
}

body, html {
  margin: 0;
  padding: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  background-color: var(--bg-page);
  color: var(--text-main);
  transition: background-color 0.25s ease, color 0.25s ease;
}

/* ---------------- Warsaw Headline (Cabeçalho duplo Beamer) ---------------- */
.warsaw-headline {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  box-shadow: 0 2px 8px rgba(0,0,0,0.25);
  font-size: 0.78rem;
  font-weight: 500;
}

.headline-section-row {
  background: var(--bg-headline-top);
  color: var(--text-headline);
  height: 22px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 20px;
}

.headline-section-nav {
  display: flex;
  gap: 16px;
}

.headline-section-nav span {
  color: var(--text-headline-muted);
  cursor: pointer;
  transition: color 0.15s;
}

.headline-section-nav span:hover {
  color: #ffffff;
}

.headline-section-nav span.active {
  color: #60a5fa;
  font-weight: 700;
}

.headline-subsection-row {
  background: var(--bg-headline-bot);
  color: var(--text-headline);
  height: 22px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 20px;
  font-size: 0.74rem;
}

.theme-toggle-btn {
  background: rgba(255, 255, 255, 0.15);
  border: 1px solid rgba(255, 255, 255, 0.3);
  color: #ffffff;
  padding: 1px 8px;
  border-radius: 4px;
  font-size: 0.72rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 4px;
  font-weight: 600;
  transition: all 0.2s ease;
}

.theme-toggle-btn:hover {
  background: rgba(255, 255, 255, 0.3);
}

/* ---------------- Warsaw Footline (Rodapé Beamer) ---------------- */
.warsaw-footline {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: 24px;
  background: var(--bg-footline);
  color: #94a3b8;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 20px;
  font-size: 0.72rem;
  z-index: 100;
  border-top: 1px solid rgba(255,255,255,0.08);
}

.footline-author {
  color: #e2e8f0;
  font-weight: 600;
}

.footline-keys kbd {
  background: rgba(255,255,255,0.12);
  color: #93c5fd;
  padding: 1px 4px;
  border-radius: 3px;
  font-family: 'Fira Code', monospace;
  font-size: 0.65rem;
}

:root {
  --font-zoom: 1;
}

.font-ctrl-btn:hover {
  background: rgba(255, 255, 255, 0.3) !important;
}

/* ---------------- Reveal.js Overrides ---------------- */
.reveal {
  background: var(--bg-slide);
  color: var(--text-main);
  font-size: calc(23px * var(--font-zoom, 1));
}

.reveal .slides {
  text-align: left;
}

.reveal .slides section {
  padding: 46px 28px 28px 28px;
  box-sizing: border-box;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  overflow-y: auto;
  overflow-x: hidden;
  font-size: calc(1em * var(--font-zoom, 1));
}

/* ---------------- Frame Title (Estilo Beamer Warsaw) ---------------- */
.frame-title-banner {
  background: linear-gradient(90deg, var(--title-gradient-start) 0%, var(--title-gradient-end) 100%);
  color: var(--title-text);
  padding: 8px 16px;
  border-radius: 6px;
  margin-bottom: 14px;
  box-shadow: 0 2px 6px rgba(0,0,0,0.2);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-shrink: 0;
}

.frame-title-banner h2 {
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: calc(1.48rem * var(--font-zoom, 1));
  font-weight: 700;
  margin: 0;
  color: #ffffff;
  letter-spacing: -0.3px;
}

.frame-title-banner .section-badge {
  font-size: calc(0.76rem * var(--font-zoom, 1));
  text-transform: uppercase;
  background: rgba(255,255,255,0.2);
  padding: 3px 10px;
  border-radius: 4px;
  font-weight: 600;
  letter-spacing: 0.5px;
}

/* ---------------- Beamer Blocks ---------------- */
.beamer-block {
  border-radius: 7px;
  overflow: hidden;
  margin-bottom: 12px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.12);
  border: 1px solid transparent;
}

.beamer-block .block-header {
  padding: 7px 14px;
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: calc(0.95rem * var(--font-zoom, 1));
  font-weight: 700;
  letter-spacing: 0.2px;
}

.beamer-block .block-body {
  padding: 12px 16px;
  font-size: calc(0.94rem * var(--font-zoom, 1));
  line-height: 1.6;
}

/* Padrão (Definição / Teorema - Azul) */
.beamer-block.def {
  border-color: var(--block-def-border);
}
.beamer-block.def .block-header {
  background: var(--block-def-head-bg);
  color: var(--block-def-head-text);
}
.beamer-block.def .block-body {
  background: var(--block-def-body-bg);
  color: var(--text-main);
}

/* Exemplo (Verde) */
.beamer-block.example {
  border-color: var(--block-ex-border);
}
.beamer-block.example .block-header {
  background: var(--block-ex-head-bg);
  color: var(--block-ex-head-text);
}
.beamer-block.example .block-body {
  background: var(--block-ex-body-bg);
  color: var(--text-main);
}

/* Alerta / Atenção (Vermelho) */
.beamer-block.alert {
  border-color: var(--block-alert-border);
}
.beamer-block.alert .block-header {
  background: var(--block-alert-head-bg);
  color: var(--block-alert-head-text);
}
.beamer-block.alert .block-body {
  background: var(--block-alert-body-bg);
  color: var(--text-main);
}

/* ---------------- Layout Columns ---------------- */
.two-cols {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  align-items: stretch;
  flex: 1;
}

.two-cols.ratio-6-4 {
  grid-template-columns: 1.25fr 0.75fr;
}

.two-cols.ratio-4-6 {
  grid-template-columns: 0.75fr 1.25fr;
}

.two-cols.ratio-5-5 {
  grid-template-columns: 1fr 1fr;
}

.col {
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  gap: 12px;
}

/* ---------------- Typography & Lists ---------------- */
ul.styled-list {
  list-style: none;
  padding: 0;
  margin: 6px 0;
}

ul.styled-list li {
  position: relative;
  padding-left: 20px;
  margin-bottom: 7px;
  line-height: 1.5;
  font-size: calc(0.92rem * var(--font-zoom, 1));
}

ul.styled-list li::before {
  content: '▸';
  position: absolute;
  left: 0;
  top: 0;
  color: #2563eb;
  font-weight: bold;
  font-size: calc(1.1rem * var(--font-zoom, 1));
}

body.theme-dark ul.styled-list li::before {
  color: #38bdf8;
}

/* ---------------- Math Boxes ---------------- */
.math-box {
  background: var(--math-box-bg);
  border: 1px solid var(--math-box-border);
  border-radius: 5px;
  padding: 8px 12px;
  text-align: center;
  margin: 6px 0;
  font-size: calc(0.95rem * var(--font-zoom, 1));
}

.math-box.highlight {
  background: var(--math-box-hl-bg);
  border-color: var(--math-box-hl-border);
  font-weight: 500;
}

/* ---------------- Canvas Interactive Card ---------------- */
.canvas-card {
  background: var(--canvas-card-bg);
  border: 1px solid var(--canvas-border);
  border-radius: 8px;
  padding: 10px 12px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: space-between;
  box-shadow: 0 4px 14px rgba(0,0,0,0.1);
  height: 100%;
}

.canvas-card .canvas-header {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 6px;
  font-size: 0.84rem;
  font-weight: 600;
  color: var(--text-muted);
  flex-shrink: 0;
}

.canvas-card canvas {
  background: var(--canvas-bg);
  border: 1px solid var(--canvas-border);
  border-radius: 5px;
  display: block;
  max-width: 100%;
  height: auto;
}

.canvas-controls {
  width: 100%;
  margin-top: 8px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  background: var(--canvas-ctrl-bg);
  padding: 8px 12px;
  border-radius: 5px;
  border: 1px solid var(--canvas-border);
  flex-shrink: 0;
}

.control-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  font-size: 0.8rem;
}

.control-row label {
  font-weight: 600;
  white-space: nowrap;
  color: var(--text-main);
}

.control-row input[type="range"] {
  flex: 1;
  accent-color: #2563eb;
  cursor: pointer;
}

.control-row .value-badge {
  font-family: 'Fira Code', monospace;
  font-size: 0.78rem;
  background: var(--math-box-bg);
  border: 1px solid var(--math-box-border);
  color: #2563eb;
  padding: 2px 6px;
  border-radius: 4px;
  min-width: 44px;
  text-align: center;
  font-weight: 600;
}

body.theme-dark .control-row .value-badge {
  color: #38bdf8;
}

.btn-group {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.btn {
  background: #1b356b;
  border: 1px solid #2d55a1;
  color: #ffffff;
  padding: 4px 10px;
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: 4px;
  cursor: pointer;
  transition: all 0.15s ease;
}

.btn:hover {
  background: #2563eb;
}

.btn.btn-sec {
  background: var(--math-box-bg);
  border-color: var(--math-box-border);
  color: var(--text-main);
}

.btn.btn-sec:hover {
  background: #cbd5e1;
}

.btn.btn-active {
  background: #2563eb;
  color: #ffffff;
  border-color: #3b82f6;
}

/* ---------------- Code Snippets ---------------- */
.code-card {
  background: var(--code-bg);
  color: var(--code-text);
  border-radius: 5px;
  overflow: hidden;
  font-family: 'Fira Code', monospace;
  font-size: 0.78rem;
  border: 1px solid var(--canvas-border);
}

.code-card-header {
  background: rgba(0,0,0,0.25);
  padding: 5px 10px;
  font-size: 0.7rem;
  color: #94a3b8;
  display: flex;
  justify-content: space-between;
}

.code-card pre {
  margin: 0;
  padding: 8px 12px;
  line-height: 1.45;
  overflow-x: auto;
}

.code-card .kw { color: #f43f5e; font-weight: 600; }
.code-card .fn { color: #38bdf8; }
.code-card .str { color: #34d399; }
.code-card .num { color: #fbbf24; }
.code-card .cmt { color: #64748b; font-style: italic; }

/* ---------------- Table of Contents ---------------- */
.toc-list {
  background: var(--canvas-card-bg);
  border: 1px solid var(--canvas-border);
  border-radius: 8px;
  padding: 16px 24px;
  margin-top: 15px;
}

.toc-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 0;
  border-bottom: 1px solid var(--canvas-border);
  cursor: pointer;
  transition: transform 0.15s;
}

.toc-item:last-child {
  border-bottom: none;
}

.toc-item:hover {
  transform: translateX(6px);
  color: #2563eb;
}

.toc-badge {
  background: #1b356b;
  color: #ffffff;
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 4px;
  font-weight: 700;
  font-size: 0.85rem;
}

/* ---------------- Matrix Summary Table ---------------- */
.matrix-summary-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  background: var(--canvas-card-bg);
  border: 1px solid var(--table-border);
  border-radius: 6px;
  overflow: hidden;
  font-size: 0.88rem;
}

.matrix-summary-table th {
  background: var(--table-head-bg);
  color: var(--table-head-text);
  font-weight: 700;
  padding: 8px 12px;
  text-align: left;
}

.matrix-summary-table td {
  padding: 10px 12px;
  border-bottom: 1px solid var(--table-border);
  color: var(--text-main);
}

.matrix-summary-table tr:last-child td {
  border-bottom: none;
}

.matrix-summary-table tr:hover td {
  background: var(--table-row-hover);
}

/* ---------------- Title Slide Hero ---------------- */
.hero-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  height: 100%;
  gap: 16px;
}

.hero-box {
  background: linear-gradient(135deg, var(--title-gradient-start) 0%, var(--title-gradient-end) 100%);
  color: #ffffff;
  padding: 24px 36px;
  border-radius: 10px;
  box-shadow: 0 8px 24px rgba(0,0,0,0.25);
  max-width: 900px;
}

.hero-box h1 {
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: 2.2rem;
  font-weight: 800;
  margin: 0 0 10px 0;
  color: #ffffff;
}

.hero-box h2 {
  font-size: 1.1rem;
  font-weight: 400;
  margin: 0;
  color: #dbeafe;
}

.hero-author-card {
  margin-top: 14px;
  font-size: 1rem;
  line-height: 1.6;
  color: var(--text-muted);
}