/* =========================================================
   CNN Slides – Global Stylesheet  (tema claro, alto contraste)
   Fontes aumentadas para legibilidade em projeção.
   Todos os containers com scroll.
   ========================================================= */

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

:root {
  --bg:        #f8f9fb;
  --bg2:       #ffffff;
  --bg3:       #f0f2f6;
  --border:    #c7d0e0;
  --border2:   #d1d9e8;
  --text:      #0f1724;
  --text-muted:#3d4f6e;
  --text-dim:  #6b7fa3;
  --purple:    #5b21b6;
  --purple-lt: #ede9fe;
  --blue:      #1d4ed8;
  --blue-lt:   #dbeafe;
  --cyan:      #0e7490;
  --cyan-lt:   #cffafe;
  --green:     #166534;
  --green-lt:  #dcfce7;
  --yellow:    #854d0e;
  --yellow-lt: #fef9c3;
  --orange:    #c2410c;
  --red:       #b91c1c;
  --pink:      #9d174d;
  --grad1:     linear-gradient(135deg, #5b21b6 0%, #1d4ed8 100%);
  --grad2:     linear-gradient(135deg, #0e7490 0%, #166534 100%);
  --shadow:    0 2px 12px rgba(15,23,36,0.10);
  --radius:    14px;
  --radius-sm: 8px;
}

html, body {
  width: 100%;
  min-height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: 'Inter', sans-serif;
  font-size: 18px;           /* base font aumentada */
  overflow-y: auto;          /* scroll na página toda */
}

/* — Slide Container — */
.slide-container {
  display: flex;
  flex-direction: column;
  width: 100%;
  min-height: 100vh;
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 2rem;
}

/* — Header — */
.slide-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.9rem 0 0.5rem;
  flex-shrink: 0;
  border-bottom: 2px solid var(--border);
}
.course-tag {
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  background: var(--grad1);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.slide-counter {
  font-size: 0.85rem;
  color: var(--text-dim);
  font-family: 'Fira Code', monospace;
  font-weight: 600;
}

/* — Main — */
.slide-main {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: visible;
  gap: 1.1rem;
  padding-bottom: 1rem;
}

/* — Title Block — */
.title-block {
  text-align: center;
  padding: 0.8rem 0 0.3rem;
}
.slide-title {
  font-size: clamp(2rem, 3.5vw, 3rem);
  font-weight: 800;
  background: var(--grad1);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  line-height: 1.15;
  letter-spacing: -0.02em;
}
.slide-subtitle {
  font-size: 1.1rem;
  color: var(--text-muted);
  margin-top: 0.4rem;
  font-weight: 500;
}

/* — Content Split — */
.content-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.4rem;
  flex: 1;
  overflow: visible;
}

/* — Panels — */
.panel {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
  overflow-y: auto;           /* scroll interno */
  box-shadow: var(--shadow);
}
.panel-title {
  font-size: 0.9rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--purple);
  border-bottom: 2px solid var(--purple-lt);
  padding-bottom: 0.5rem;
  flex-shrink: 0;
}

/* — MLP Demo — */
.mlp-demo {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.6rem;
  flex: 1;
}
.data-table {
  background: var(--bg3);
  border: 1px solid var(--border2);
  border-radius: var(--radius-sm);
  padding: 0.6rem;
  font-family: 'Fira Code', monospace;
  font-size: 0.95rem;
  width: 100%;
}
.table-header {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 0.5rem;
  color: var(--cyan);
  font-weight: 700;
  border-bottom: 1px solid var(--border2);
  padding-bottom: 0.3rem;
  margin-bottom: 0.3rem;
}
.table-row {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 0.5rem;
  color: var(--text-muted);
  padding: 0.18rem 0;
  animation: rowFade 0.5s ease both;
  animation-delay: var(--delay);
}
@keyframes rowFade {
  from { opacity: 0; transform: translateX(-8px); }
  to   { opacity: 1; transform: translateX(0); }
}
.data-label {
  font-size: 0.8rem;
  color: var(--text-dim);
  text-align: center;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 600;
}
.data-source { width: 100%; }
.arrow-flow {
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 100%;
}
.flow-arrow { width: 80%; height: 28px; }
.arrow-label {
  font-size: 0.8rem;
  color: var(--text-dim);
  font-family: 'Fira Code', monospace;
}
.animated-dash {
  stroke-dashoffset: 0;
  animation: dashMove 1.5s linear infinite;
}
@keyframes dashMove {
  to { stroke-dashoffset: -16; }
}
.network-svg { width: 90%; max-height: 180px; }
.node-pulse {
  animation: nodePop 0.4s ease both;
}
@keyframes nodePop {
  from { r: 0; opacity: 0; }
  to   { r: 10; opacity: 1; }
}

.output-box {
  display: flex;
  gap: 0.75rem;
}
.output-pill {
  padding: 0.35rem 1.1rem;
  border-radius: 999px;
  font-size: 0.95rem;
  font-weight: 700;
}
.output-pill.positive {
  background: var(--green-lt);
  color: var(--green);
  border: 1.5px solid #86efac;
}
.output-pill.negative {
  background: #fee2e2;
  color: var(--red);
  border: 1.5px solid #fca5a5;
}

/* — Highlight Box — */
.highlight-box {
  display: flex;
  align-items: flex-start;
  gap: 0.7rem;
  padding: 0.85rem 1.1rem;
  border-radius: var(--radius-sm);
  font-size: 0.97rem;
  line-height: 1.55;
}
.highlight-box.green {
  background: var(--green-lt);
  border: 1.5px solid #86efac;
  color: var(--green);
}
.highlight-box.blue {
  background: var(--blue-lt);
  border: 1.5px solid #93c5fd;
  color: var(--blue);
}
.highlight-box.purple {
  background: var(--purple-lt);
  border: 1.5px solid #c4b5fd;
  color: var(--purple);
}
.highlight-box.yellow {
  background: var(--yellow-lt);
  border: 1.5px solid #fde047;
  color: var(--yellow);
}
.highlight-box .icon { font-size: 1.2rem; flex-shrink: 0; }

/* — Concept Cards — */
.concept-cards {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  flex: 1;
}
.concept-card {
  display: flex;
  align-items: center;
  gap: 0.9rem;
  background: var(--bg3);
  border: 1.5px solid var(--border2);
  border-radius: var(--radius-sm);
  padding: 0.8rem 1.1rem;
  animation: cardSlide 0.4s ease both;
  animation-delay: var(--delay, 0s);
  transition: border-color 0.2s, transform 0.2s;
}
.concept-card:hover {
  border-color: var(--purple);
  transform: translateX(4px);
}
@keyframes cardSlide {
  from { opacity: 0; transform: translateX(16px); }
  to   { opacity: 1; transform: translateX(0); }
}
.card-icon { font-size: 1.6rem; flex-shrink: 0; }
.card-text strong { font-size: 0.97rem; display: block; margin-bottom: 0.2rem; color: var(--text); }
.card-text p { font-size: 0.9rem; color: var(--text-muted); line-height: 1.45; }

/* — Question Block — */
.question-block {
  background: var(--purple-lt);
  border: 1.5px dashed #a78bfa;
  border-radius: var(--radius-sm);
  padding: 0.9rem 1.1rem;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}
.question-label {
  font-size: 1rem;
  font-weight: 700;
  color: var(--purple);
}
.question-examples {
  display: flex;
  gap: 0.6rem;
  flex-wrap: wrap;
}
.example-chip {
  padding: 0.25rem 0.95rem;
  border-radius: 999px;
  font-size: 0.9rem;
  font-weight: 600;
  border: 1.5px solid var(--border2);
  color: var(--text-muted);
  background: var(--bg2);
  cursor: default;
}
.question-hint {
  font-size: 0.9rem;
  color: var(--blue);
  font-family: 'Fira Code', monospace;
  font-weight: 600;
}

/* =========================================================
   Slide 2 Styles
   ========================================================= */
.arch-diagram {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  flex: 0 0 auto;
  padding: 0.5rem 0;
  overflow-x: auto;
}
.arch-block {
  display: flex;
  flex-direction: column;
  align-items: center;
  position: relative;
}
.arch-box {
  background: var(--bg3);
  border: 2px solid var(--border2);
  border-radius: var(--radius);
  padding: 1rem 1.3rem;
  text-align: center;
  min-width: 155px;
  transition: border-color 0.3s, transform 0.3s, box-shadow 0.3s;
  cursor: default;
}
.arch-box:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(15,23,36,0.12);
}
.arch-box.input     { border-color: #0e7490; background: var(--cyan-lt); }
.arch-box.extractor { border-color: #5b21b6; background: var(--purple-lt); }
.arch-box.mlp       { border-color: #1d4ed8; background: var(--blue-lt); }
.arch-box.output    { border-color: #166534; background: var(--green-lt); }

.arch-box .box-icon  { font-size: 2rem; margin-bottom: 0.4rem; }
.arch-box .box-title { font-size: 0.97rem; font-weight: 800; color: var(--text); }
.arch-box .box-sub   { font-size: 0.82rem; color: var(--text-muted); margin-top: 0.3rem; line-height: 1.4; }

.arch-arrow {
  display: flex;
  align-items: center;
  flex-direction: column;
  padding: 0 0.4rem;
}
.arrow-svg { width: 58px; height: 28px; }

.arch-label {
  font-size: 0.78rem;
  color: var(--text-dim);
  text-align: center;
  margin-top: 0.5rem;
  font-family: 'Fira Code', monospace;
  font-weight: 600;
}

.e2e-badge {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  padding: 0.7rem 1.6rem;
  border-radius: 999px;
  background: var(--purple-lt);
  border: 1.5px solid #c4b5fd;
  font-size: 0.97rem;
  font-weight: 700;
  color: var(--purple);
  margin-top: 0.6rem;
}

.examples-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.7rem;
}
.example-card {
  background: var(--bg3);
  border: 1.5px solid var(--border2);
  border-radius: var(--radius-sm);
  padding: 0.85rem;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  transition: border-color 0.2s, transform 0.2s;
  cursor: default;
  animation: cardSlide 0.4s ease both;
  animation-delay: var(--delay, 0s);
}
.example-card:hover { border-color: var(--purple); transform: scale(1.02); }
.example-card .ex-icon   { font-size: 1.6rem; }
.example-card .ex-input  { font-size: 0.87rem; color: var(--text-muted); font-weight: 500; }
.example-card .ex-repres { font-size: 0.87rem; color: var(--cyan); font-family: 'Fira Code', monospace; font-weight: 600; }
.example-card .ex-task   { font-size: 0.87rem; color: var(--green); font-weight: 600; }

/* =========================================================
   Slide 3 Styles
   ========================================================= */
.pixel-demo {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.9rem;
  flex: 1;
}
.pixel-grid-wrap { position: relative; }
.pixel-grid {
  display: grid;
  border: 2px solid var(--border2);
  border-radius: 6px;
  overflow: hidden;
  gap: 1px;
  background: var(--border2);
}
.pixel-cell {
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.65rem;
  font-family: 'Fira Code', monospace;
  cursor: pointer;
  transition: all 0.15s;
  aspect-ratio: 1;
}
.pixel-cell:hover { outline: 2px solid var(--cyan); z-index: 2; position: relative; }

.matrix-display {
  background: var(--bg3);
  border: 1.5px solid var(--border2);
  border-radius: var(--radius-sm);
  padding: 0.7rem 0.9rem;
  font-family: 'Fira Code', monospace;
  font-size: 0.88rem;
  color: var(--cyan);
  overflow: auto;
  flex: 1;
  white-space: pre;
}

.tooltip-box {
  position: absolute;
  background: var(--bg2);
  border: 1.5px solid var(--cyan);
  border-radius: var(--radius-sm);
  padding: 0.4rem 0.7rem;
  font-size: 0.85rem;
  font-family: 'Fira Code', monospace;
  color: var(--cyan);
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.2s;
  z-index: 10;
  white-space: nowrap;
}

/* =========================================================
   Slide 4 Styles – Cores e Canais
   ========================================================= */
.channels-demo {
  display: flex;
  gap: 1.1rem;
  align-items: flex-start;
  flex: 1;
  flex-wrap: wrap;
}
.channel-block {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
}
.channel-label {
  font-size: 0.9rem;
  font-family: 'Fira Code', monospace;
  font-weight: 700;
}
.channel-label.r   { color: #b91c1c; }
.channel-label.g   { color: #166534; }
.channel-label.b   { color: #1d4ed8; }
.channel-label.rgb { color: var(--text); }

.plus-sign {
  font-size: 1.8rem;
  color: var(--text-dim);
  align-self: center;
  margin-top: 1.1rem;
  font-weight: 700;
}
.equals-sign {
  font-size: 1.8rem;
  color: var(--text-dim);
  align-self: center;
  margin-top: 1.1rem;
  font-weight: 700;
}
.color-canvas {
  border-radius: 6px;
  border: 2px solid var(--border2);
  cursor: pointer;
  transition: transform 0.2s, border-color 0.2s;
}
.color-canvas:hover { transform: scale(1.06); border-color: var(--cyan); }

.tensor-vis {
  display: flex;
  align-items: center;
  gap: 1.1rem;
  flex: 1;
}
.tensor-label {
  font-size: 0.97rem;
  color: var(--text-muted);
  font-family: 'Fira Code', monospace;
}
.tensor-3d { position: relative; width: 90px; height: 90px; }
.tensor-face { position: absolute; border-radius: 3px; }

/* =========================================================
   Slide 5 Styles – Caso de Estudo
   ========================================================= */
.tiles-intro {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  flex: 1;
}
.tile-row {
  display: flex;
  gap: 1.8rem;
  align-items: center;
  flex-wrap: wrap;
  justify-content: center;
  padding: 0.6rem 0;
}
.tile-block {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.6rem;
}
.tile-label {
  font-size: 0.95rem;
  font-weight: 700;
  font-family: 'Fira Code', monospace;
  color: var(--text);
}

.pixel-value-note {
  font-size: 0.9rem;
  color: var(--text-muted);
  font-family: 'Fira Code', monospace;
  text-align: center;
}

.binary-note {
  display: flex;
  gap: 1.1rem;
  align-items: center;
  font-size: 0.95rem;
  font-family: 'Fira Code', monospace;
  justify-content: center;
}
.bin-0 { color: var(--text-dim); }
.bin-1 { color: var(--purple); font-weight: 700; }

.classification-task {
  background: var(--bg3);
  border: 1.5px solid var(--border2);
  border-radius: var(--radius-sm);
  padding: 0.9rem 1.1rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.task-row {
  display: flex;
  align-items: center;
  gap: 0.9rem;
  font-size: 1rem;
}
.task-arrow { color: var(--text-dim); font-size: 1.1rem; }
.task-badge {
  padding: 0.25rem 1rem;
  border-radius: 999px;
  font-size: 0.9rem;
  font-weight: 700;
}
.badge-x     { background: var(--purple-lt); color: var(--purple); border: 1.5px solid #c4b5fd; }
.badge-not-x { background: var(--bg3);       color: var(--text-muted); border: 1.5px solid var(--border2); }

/* =========================================================
   Navigation
   ========================================================= */
.slide-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.8rem 0 1.1rem;
  flex-shrink: 0;
  border-top: 1px solid var(--border);
}
.btn-nav {
  background: var(--bg3);
  border: 1.5px solid var(--border2);
  color: var(--text);
  padding: 0.6rem 1.6rem;
  border-radius: 999px;
  font-size: 1rem;
  font-family: 'Inter', sans-serif;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
}
.btn-nav:hover {
  background: var(--purple);
  border-color: var(--purple);
  color: #fff;
  transform: scale(1.04);
}
.btn-prev:disabled, .btn-next:disabled {
  opacity: 0.3;
  pointer-events: none;
}
.nav-dots {
  display: flex;
  gap: 0.6rem;
  align-items: center;
}
.dot {
  width: 10px; height: 10px;
  border-radius: 50%;
  background: var(--border2);
  transition: all 0.2s;
}
.dot.active {
  background: var(--purple);
  width: 24px;
  border-radius: 5px;
}

/* =========================================================
   Misc Utilities
   ========================================================= */
.divider { height: 1px; background: var(--border2); margin: 0.25rem 0; }
.mono { font-family: 'Fira Code', monospace; }
.text-small { font-size: 0.97rem; }
.text-muted { color: var(--text-muted); }
.text-purple { color: var(--purple); }
.text-cyan { color: var(--cyan); }
.text-green { color: var(--green); }

/* — Big Insight Box — */
.insight-box {
  background: linear-gradient(135deg, var(--purple-lt), var(--blue-lt));
  border: 1.5px solid #c4b5fd;
  border-radius: var(--radius);
  padding: 1.05rem 1.3rem;
  display: flex;
  gap: 0.85rem;
  align-items: flex-start;
}
.insight-box .i-icon { font-size: 1.6rem; flex-shrink: 0; }
.insight-box .i-text { font-size: 1rem; line-height: 1.6; color: var(--text); }
.insight-box .i-text strong { color: var(--purple); }

/* — Responsive — */
@media (max-width: 900px) {
  .content-split { grid-template-columns: 1fr; }
}