/* ==========================================================================
   ARDUINDO - Design System: Caderno Técnico Maker / Sketchbook Paper
   Estética de Papel Quadriculado, Traço de Nanquim e Azul Blueprint
   ========================================================================== */
@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@400;700&display=swap');
@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;500;600;700;800&family=JetBrains+Mono:wght@400;500;700&family=Caveat:wght@600;700&display=swap');

:root {

/* Fonte de anotações à mão */
  --font-body: 'Plus Jakarta Sans', -apple-system, sans-serif;
  /* ✅ ADICIONADO */


  /* Papel Técnico & Nanquim */
  --bg-paper: #fbfbfa;
  /* Papel Branco Quente / Sketchbook */
  --bg-paper-grid: rgba(30, 64, 175, 0.08);
  /* Grade azul quadriculada suave */
  --bg-card: #ffffff;
  --bg-card-subtle: #f4f4f0;

  /* Tintas */
  --ink-black: #18181b;
  /* Tinta Nanquim Preto */
  --ink-navy: #1e3a8a;
  /* Azul Blueprint */
  --ink-blue: #2563eb;
  /* Azul Caneta Técnica */
  --ink-blue-soft: #eff6ff;
  --ink-blue-border: #bfdbfe;

  --pencil-gray: #52525b;
  --pencil-light: #a1a1aa;

  /* Fita Adesiva / Destaques Maker */
  --tape-yellow: #fef08a;
  /* Fita Crepe / Marca-texto Amarelo */
  --tape-border: #facc15;
  --tape-amber: #f59e0b;
  --stamp-red: #dc2626;
  /* Carimbo Vermelho */
  --led-green: #16a34a;

  /* Linhas e Bordas de Desenho */
  --line-main: #27272a;
  --line-grid: #e4e4e7;
  --line-technical: #d4d4d8;

  --shadow-sketch: 3px 3px 0px rgba(24, 24, 27, 0.9);
  --shadow-sketch-sm: 2px 2px 0px rgba(24, 24, 27, 0.9);
  --shadow-sketch-hover: 5px 5px 0px rgba(24, 24, 27, 0.95);

  --radius-sketch: 6px;
  --radius-tape: 2px;

  --font-sans: 'Plus Jakarta Sans', -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
  --font-hand: 'Caveat', cursive;
  /* Fonte de anotações à mão */
}

/* Modo Noturno (Blueprint Lab Invertido) */
[data-theme="dark"] {
  --bg-paper: #0c1222;
  --bg-paper-grid: rgba(96, 165, 250, 0.09);
  --bg-card: #141d33;
  --bg-card-subtle: #1c2744;

  --ink-black: #f8fafc;
  --ink-navy: #93c5fd;
  --ink-blue: #60a5fa;
  --ink-blue-soft: rgba(96, 165, 250, 0.12);
  --ink-blue-border: #1e3a8a;

  --pencil-gray: #cbd5e1;
  --pencil-light: #64748b;

  --line-main: #3b82f6;
  --line-grid: #1e293b;
  --line-technical: #334155;

  --tape-yellow: rgba(250, 204, 21, 0.2);
  --tape-border: #eab308;

  --shadow-sketch: 3px 3px 0px rgba(59, 130, 246, 0.4);
  --shadow-sketch-sm: 2px 2px 0px rgba(59, 130, 246, 0.4);
  --shadow-sketch-hover: 5px 5px 0px rgba(59, 130, 246, 0.6);
}

/* ==========================================================================
   Reset & Textura de Papel Quadriculado
   ========================================================================== */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-paper);
  color: var(--ink-black);
  line-height: 1.6;
  position: relative;
  overflow-x: hidden;
}

/* Malha de Caderno Quadriculado */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(to right, var(--bg-paper-grid) 1px, transparent 1px),
    linear-gradient(to bottom, var(--bg-paper-grid) 1px, transparent 1px);
  background-size: 22px 22px;
  pointer-events: none;
  z-index: 0;
}

.container {
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  z-index: 1;
}

/* ==========================================================================
   Anotações à Mão & Fita Adesiva (Masking Tape)
   ========================================================================== */
.tape-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 12px;
  background: var(--tape-yellow);
  border: 1px dashed var(--tape-border);
  color: #854d0e;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.5px;
  transform: rotate(-1.5deg);
  box-shadow: 1px 1px 3px rgba(0, 0, 0, 0.08);
}

[data-theme="dark"] .tape-tag {
  color: #fef08a;
}

.hand-note {
  font-family: var(--font-hand);
  font-size: 1.35rem;
  color: var(--ink-blue);
  line-height: 1.1;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.stamp-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 2px 8px;
  border: 1.5px solid var(--ink-black);
  border-radius: var(--radius-tape);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  background: var(--bg-card);
  text-transform: uppercase;
}

/* ==========================================================================
   Botões Estilo Sketchbook / Traço Nanquim
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 22px;
  font-size: 0.92rem;
  font-weight: 700;
  border-radius: var(--radius-sketch);
  text-decoration: none;
  cursor: pointer;
  border: 2px solid var(--ink-black);
  transition: all 0.18s ease;
  font-family: var(--font-sans);
}

.btn-primary {
  background: var(--ink-blue);
  color: #ffffff;
  box-shadow: var(--shadow-sketch-sm);
}

.btn-primary:hover {
  background: #1d4ed8;
  transform: translate(-2px, -2px);
  box-shadow: var(--shadow-sketch-hover);
  color: #ffffff;
}

.btn-secondary {
  background: var(--bg-card);
  color: var(--ink-black);
  box-shadow: var(--shadow-sketch-sm);
}

.btn-secondary:hover {
  background: var(--ink-blue-soft);
  transform: translate(-2px, -2px);
  box-shadow: var(--shadow-sketch-hover);
  border-color: var(--ink-blue);
  color: var(--ink-blue);
}

.btn-sm {
  padding: 6px 14px;
  font-size: 0.82rem;
}

/* ==========================================================================
   Header & Logo Oficial ARDUINDO (Infinito Dinâmico)
   ========================================================================== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 72px;
  background: rgba(251, 251, 250, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 2px solid var(--ink-black);
  z-index: 1000;
  transition: all 0.3s ease;
}

[data-theme="dark"] .header {
  background: rgba(12, 18, 34, 0.92);
  border-bottom-color: var(--line-technical);
}

.nav-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

/* Logo Oficial com o Infinito Dinâmico */
.logo-container {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}

.logo-infinity-svg {
  width: 62px;
  height: 32px;
  overflow: visible;
  color: var(--ink-black);
  transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.logo-container:hover .logo-infinity-svg {
  transform: scale(1.08) rotate(1deg);
}

.logo-container:hover .logo-arrowhead,
.logo-container:hover .logo-infinity-track {
  animation: logo-thrust 0.6s ease-in-out infinite alternate;
}

.logo-container:hover .logo-smoke path {
  animation: logo-puff 0.4s ease-in-out infinite alternate;
}

.logo-container:hover .logo-speed-lines path {
  animation: logo-streaks 0.35s ease-in-out infinite alternate;
}

@keyframes logo-thrust {
  0% {
    transform: translateX(0);
  }

  100% {
    transform: translateX(4px);
  }
}

@keyframes logo-puff {
  0% {
    transform: translateX(0) scale(1);
  }

  100% {
    transform: translateX(-3px) scale(1.05);
  }
}

@keyframes logo-streaks {
  0% {
    opacity: 0.7;
    transform: scaleX(0.9);
  }

  100% {
    opacity: 1;
    transform: scaleX(1.15) translateX(-2px);
  }
}

[data-theme="dark"] .logo-infinity-svg {
  color: #60a5fa !important;
}

.logo-title-wrap {
  display: flex;
  flex-direction: column;
}

.logo-brand-name {
  font-size: 1.45rem;
  font-weight: 800;
  color: var(--ink-black);
  letter-spacing: -0.5px;
  line-height: 1;
  display: flex;
  align-items: center;
  gap: 2px;
}

.logo-sub-label {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 700;
  color: var(--ink-blue);
  letter-spacing: 0.75px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 6px;
  list-style: none;
}

.nav-link {
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--pencil-gray);
  text-decoration: none;
  transition: color 0.15s ease;
  position: relative;
  padding: 8px 9px;
  white-space: nowrap;
  line-height: 1.2;
}

.nav-link:hover,
.nav-link.active {
  color: var(--ink-blue);
}

.nav-link.active::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -4px;
  height: 2px;
  background: var(--ink-blue);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.progress-tag {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 5px 12px;
  background: var(--bg-card);
  border: 1.5px solid var(--ink-black);
  border-radius: var(--radius-sketch);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 700;
  box-shadow: 1px 1px 0px var(--ink-black);
}

.theme-toggle-btn {
  width: 38px;
  height: 38px;
  background: var(--bg-card);
  border: 1.5px solid var(--ink-black);
  border-radius: var(--radius-sketch);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--ink-black);
  box-shadow: 1px 1px 0px var(--ink-black);
  transition: all 0.15s ease;
}

.theme-toggle-btn:hover {
  transform: translate(-1px, -1px);
  box-shadow: 2px 2px 0px var(--ink-black);
}

/* ==========================================================================
   Hero Section: Prancheta / Caderno de Projetos
   ========================================================================== */
.hero {
  padding-top: 110px;
  padding-bottom: 70px;
  position: relative;
}

.hero-grid-sketch {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 40px;
  align-items: center;
}

.hero-top-strip {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}

.hero-title-sketch {
  font-size: 3.2rem;
  line-height: 1.12;
  font-weight: 800;
  color: var(--ink-black);
  letter-spacing: -0.5px;
  margin-bottom: 18px;
}

.hero-title-sketch .highlight-ink {
  color: var(--ink-blue);
  position: relative;
  display: inline-block;
}

.hero-title-sketch .highlight-ink::after {
  content: "";
  position: absolute;
  left: -2px;
  right: -2px;
  bottom: 6px;
  height: 10px;
  background: var(--tape-yellow);
  z-index: -1;
  transform: rotate(-0.8deg);
}

.hero-desc-sketch {
  font-size: 1.05rem;
  color: var(--pencil-gray);
  line-height: 1.65;
  margin-bottom: 28px;
  max-width: 540px;
}

.hero-buttons-row {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 32px;
}

.spec-pills-row {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.spec-pill-paper {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  background: var(--bg-card);
  border: 1px solid var(--line-technical);
  border-radius: var(--radius-sketch);
  font-family: var(--font-mono);
  font-size: 0.76rem;
  color: var(--pencil-gray);
}

/* Card Prancheta / Arduino Desenhado */
.sketchbook-card {
  background: var(--bg-card);
  border: 2px solid var(--ink-black);
  border-radius: var(--radius-sketch);
  padding: 24px;
  box-shadow: var(--shadow-sketch);
  position: relative;
}

.sketchbook-card::before {
  content: "CADERNO DE PROJETOS #01";
  position: absolute;
  top: -12px;
  left: 20px;
  background: var(--tape-yellow);
  color: #854d0e;
  border: 1px solid var(--tape-border);
  padding: 2px 10px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 700;
  transform: rotate(-1deg);
}

.sketch-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 1.5px dashed var(--line-technical);
}

.power-btn-sketch {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 700;
  background: var(--bg-card-subtle);
  border: 1.5px solid var(--ink-black);
  padding: 5px 12px;
  border-radius: var(--radius-sketch);
  cursor: pointer;
  transition: all 0.15s ease;
}

.power-btn-sketch.is-on {
  background: #dcfce7;
  border-color: #16a34a;
  color: #15803d;
}

.led-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: #a1a1aa;
}

.power-btn-sketch.is-on .led-dot {
  background: #16a34a;
}

/* Placa Arduino Estilo Desenho Técnico Blueprint */
.arduino-blueprint-box {
  background: #1e3a8a;
  /* Azul Clássico Blueprint */
  border: 2px solid var(--ink-black);
  border-radius: var(--radius-sketch);
  padding: 18px;
  color: #fff;
  display: grid;
  grid-template-columns: 1fr 1.6fr 1fr;
  gap: 10px;
  box-shadow: inset 0 0 10px rgba(0, 0, 0, 0.3);
}

.board-mcu-box {
  background: #0f172a;
  border: 1.5px dashed #93c5fd;
  border-radius: 4px;
  padding: 14px 8px;
  text-align: center;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: #bfdbfe;
  cursor: pointer;
  transition: all 0.2s ease;
}

.board-mcu-box:hover {
  background: #0284c7;
  color: #fff;
  border-style: solid;
}

.board-interactive-note {
  margin-top: 14px;
  background: var(--bg-card-subtle);
  border: 1.5px solid var(--ink-black);
  border-radius: var(--radius-sketch);
  padding: 10px 14px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--pencil-gray);
  min-height: 44px;
  display: flex;
  align-items: center;
  gap: 8px;
}

/* ==========================================================================
   Seções Gerais
   ========================================================================== */
.section {
  padding: 70px 0;
  position: relative;
}

.section-title-sketch {
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--ink-black);
  letter-spacing: -0.5px;
  margin-bottom: 8px;
}

.section-desc-sketch {
  font-size: 0.98rem;
  color: var(--pencil-gray);
  max-width: 660px;
}

/* ==========================================================================
   Trilhas / Níveis de Aprendizado
   ========================================================================== */
.tracks-grid-sketch {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 36px;
}

.track-card-paper {
  background: var(--bg-card);
  border: 2px solid var(--ink-black);
  border-radius: var(--radius-sketch);
  padding: 24px;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-sketch);
  transition: all 0.2s ease;
}

.track-card-paper:hover {
  transform: translate(-3px, -3px);
  box-shadow: var(--shadow-sketch-hover);
}

.track-header-sketch {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
}

.track-title-sketch {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--ink-black);
  margin-bottom: 8px;
}

.track-desc-sketch {
  font-size: 0.9rem;
  color: var(--pencil-gray);
  line-height: 1.55;
  margin-bottom: 18px;
  flex-grow: 1;
}

.track-checklist-paper {
  list-style: none;
  margin-bottom: 20px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.track-checklist-paper li {
  font-size: 0.85rem;
  color: var(--pencil-gray);
  display: flex;
  align-items: center;
  gap: 8px;
}

.track-checklist-paper li i {
  color: var(--ink-blue);
  font-size: 0.8rem;
}

/* ==========================================================================
   Catálogo de Aulas
   ========================================================================== */
.catalog-bar-sketch {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin: 32px 0;
  flex-wrap: wrap;
  background: var(--bg-card);
  border: 2px solid var(--ink-black);
  padding: 10px 16px;
  border-radius: var(--radius-sketch);
  box-shadow: var(--shadow-sketch-sm);
}

.filter-tab-sketch {
  padding: 6px 14px;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  font-weight: 700;
  background: var(--bg-card-subtle);
  border: 1.5px solid var(--ink-black);
  border-radius: var(--radius-sketch);
  color: var(--ink-black);
  cursor: pointer;
  transition: all 0.15s ease;
}

.filter-tab-sketch:hover {
  background: var(--ink-blue-soft);
  color: var(--ink-blue);
}

.filter-tab-sketch.active {
  background: var(--ink-blue);
  color: #fff;
}

.search-box-sketch {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--bg-card-subtle);
  border: 1.5px solid var(--ink-black);
  padding: 6px 12px;
  border-radius: var(--radius-sketch);
}

.search-box-sketch input {
  border: none;
  outline: none;
  background: transparent;
  font-family: inherit;
  font-size: 0.88rem;
  color: var(--ink-black);
  width: 220px;
}

/* Cards de Aulas */
.lessons-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 24px;
}

.lesson-card-sketch {
  background: var(--bg-card);
  border: 2px solid var(--ink-black);
  border-radius: var(--radius-sketch);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-sketch);
  transition: all 0.2s ease;
}

.lesson-card-sketch:hover {
  transform: translate(-3px, -3px);
  box-shadow: var(--shadow-sketch-hover);
}

.lesson-thumbnail-box {
  position: relative;
  aspect-ratio: 16 / 9;
  background: #000;
  cursor: pointer;
}

.lesson-thumbnail-box img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.play-badge-sketch {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(24, 24, 27, 0.4);
}

.play-badge-sketch span {
  background: var(--ink-blue);
  color: #fff;
  border: 1.5px solid var(--ink-black);
  padding: 6px 14px;
  border-radius: var(--radius-sketch);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 6px;
  box-shadow: 2px 2px 0px var(--ink-black);
}

.lesson-content-sketch {
  padding: 18px;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.lesson-title-sketch {
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--ink-black);
  margin-bottom: 8px;
  cursor: pointer;
  line-height: 1.35;
}

.lesson-title-sketch:hover {
  color: var(--ink-blue);
}

.lesson-desc-sketch {
  font-size: 0.88rem;
  color: var(--pencil-gray);
  line-height: 1.5;
  margin-bottom: 14px;
  flex-grow: 1;
}

.lesson-tags-sketch {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  margin-bottom: 16px;
}

.lesson-footer-sketch {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 12px;
  border-top: 1.5px dashed var(--line-technical);
}

/* ==========================================================================
   Espaço Tinkercad & Caderno de Esquemas
   ========================================================================== */
.tinkercad-notebook-box {
  background: var(--bg-card);
  border: 2px solid var(--ink-black);
  border-radius: var(--radius-sketch);
  box-shadow: var(--shadow-sketch);
  overflow: hidden;
  margin-top: 32px;
}

.notebook-tabs-row {
  display: flex;
  align-items: center;
  background: var(--bg-card-subtle);
  border-bottom: 2px solid var(--ink-black);
  overflow-x: auto;
}

.notebook-tab-btn {
  padding: 12px 18px;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--pencil-gray);
  background: transparent;
  border: none;
  border-right: 1.5px solid var(--ink-black);
  cursor: pointer;
  white-space: nowrap;
  transition: all 0.15s ease;
  display: flex;
  align-items: center;
  gap: 6px;
}

.notebook-tab-btn:hover {
  background: var(--bg-card);
  color: var(--ink-blue);
}

.notebook-tab-btn.active {
  background: var(--bg-card);
  color: var(--ink-blue);
  border-bottom: 2px solid var(--ink-blue);
}

.notebook-body {
  padding: 28px;
}

/* Código C++ Estilo Terminal / Caderno */
.code-sketch-box {
  background: #0f172a;
  border: 2px solid var(--ink-black);
  border-radius: var(--radius-sketch);
  overflow: hidden;
}

.code-sketch-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 14px;
  background: #1e293b;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: #93c5fd;
  border-bottom: 1px solid #334155;
}

.code-sketch-content {
  padding: 16px;
  color: #f8fafc;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  line-height: 1.6;
  overflow-x: auto;
}

/* ==========================================================================
   Modelos 3D
   ========================================================================== */
.resources-grid-sketch {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 32px;
}

.resource-card-sketch {
  background: var(--bg-card);
  border: 2px solid var(--ink-black);
  border-radius: var(--radius-sketch);
  padding: 22px;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-sketch);
  transition: all 0.2s ease;
}

.resource-card-sketch:hover {
  transform: translate(-3px, -3px);
  box-shadow: var(--shadow-sketch-hover);
}

/* ==========================================================================
   FAQ
   ========================================================================== */
.faq-list-sketch {
  max-width: 820px;
  margin: 32px auto 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.faq-item-sketch {
  background: var(--bg-card);
  border: 2px solid var(--ink-black);
  border-radius: var(--radius-sketch);
  overflow: hidden;
  box-shadow: var(--shadow-sketch-sm);
}

.faq-item-sketch.active {
  border-color: var(--ink-blue);
}

.faq-btn-sketch {
  width: 100%;
  padding: 16px 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: transparent;
  border: none;
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--ink-black);
  text-align: left;
  cursor: pointer;
}

.faq-answer-sketch {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.3s ease;
  padding: 0 18px;
  font-size: 0.92rem;
  color: var(--pencil-gray);
  line-height: 1.6;
}

.faq-item-sketch.active .faq-answer-sketch {
  max-height: 600px;
  /* ✅ Era 250px — agora comporta respostas longas em telas estreitas */
  padding: 0 18px 16px;
}


/* ==========================================================================
   Modal do YouTube
   ========================================================================== */
.video-modal {
  position: fixed;
  inset: 0;
  background: rgba(24, 24, 27, 0.85);
  backdrop-filter: blur(4px);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  opacity: 0;
  visibility: hidden;
  transition: all 0.25s ease;
}

.video-modal.is-open {
  opacity: 1;
  visibility: visible;
}

.modal-box-sketch {
  background: var(--bg-card);
  border: 2.5px solid var(--ink-black);
  border-radius: var(--radius-sketch);
  width: 100%;
  max-width: 900px;
  max-height: 90vh;
  overflow-y: auto;
  position: relative;
  box-shadow: 6px 6px 0px rgba(0, 0, 0, 0.5);
}

.modal-close-btn {
  position: absolute;
  top: 10px;
  right: 10px;
  width: 32px;
  height: 32px;
  background: var(--ink-black);
  color: #fff;
  border: none;
  border-radius: var(--radius-sketch);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 10;
}

/* Toast */
.toast-notification {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background: var(--ink-black);
  color: #fff;
  padding: 10px 16px;
  border-radius: var(--radius-sketch);
  border: 1.5px solid var(--tape-yellow);
  font-family: var(--font-mono);
  font-size: 0.82rem;
  box-shadow: var(--shadow-sketch);
  z-index: 3000;
  transform: translateY(100px);
  opacity: 0;
  transition: all 0.3s ease;
}

.toast-notification.show {
  transform: translateY(0);
  opacity: 1;
}

/* ==========================================================================
   Bancada de Ferramentas Maker (Calculadoras & Pinout)
   ========================================================================== */
.tools-tab-buttons {
  display: flex;
  gap: 8px;
  background: var(--bg-card);
  padding: 4px;
  border: 1.5px solid var(--ink-black);
  border-radius: var(--radius-sketch);
  box-shadow: 2px 2px 0 var(--ink-black);
  flex-wrap: wrap;
}

.tool-tab-btn {
  background: transparent;
  border: none;
  padding: 8px 14px;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--pencil-gray);
  border-radius: 4px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: all 0.15s ease;
}

.tool-tab-btn:hover {
  color: var(--ink-black);
}

.tool-tab-btn.active {
  background: var(--ink-black);
  color: #fff;
}

[data-theme="dark"] .tool-tab-btn.active {
  background: var(--tape-yellow);
  color: #18181b;
}

.tool-tab-pane {
  display: none;
  animation: fadeIn 0.3s ease;
}

.tool-tab-pane.active {
  display: block;
}

/* 1. Calculadora de Resistores */
.tool-grid-resistor {
  display: grid;
  grid-template-columns: 1fr 1.3fr;
  gap: 24px;
  align-items: start;
}

.resistor-preview-card {
  background: var(--bg-card);
  border: 2px solid var(--ink-black);
  border-radius: var(--radius-sketch);
  padding: 24px;
  box-shadow: var(--shadow-sketch);
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.resistor-mode-toggle {
  display: flex;
  gap: 8px;
  margin-bottom: 24px;
}

.resistor-graphic-wrap {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  max-width: 320px;
  height: 80px;
  margin: 16px 0 24px 0;
  position: relative;
}

.resistor-lead-left,
.resistor-lead-right {
  height: 6px;
  width: 45px;
  background: #94a3b8;
  border: 1.5px solid #475569;
}

.resistor-body {
  flex: 1;
  height: 52px;
  background: #fde68a;
  border: 2.5px solid var(--ink-black);
  border-radius: 20px;
  display: flex;
  align-items: center;
  justify-content: space-around;
  padding: 0 16px;
  position: relative;
  box-shadow: inset 0 -4px 0 rgba(0, 0, 0, 0.15), inset 0 4px 0 rgba(255, 255, 255, 0.6);
}

[data-theme="dark"] .resistor-body {
  background: #d97706;
}

.resistor-band {
  width: 12px;
  height: 100%;
  box-shadow: 0 0 2px rgba(0, 0, 0, 0.4);
  transition: background-color 0.2s ease;
  position: relative;
}

.resistor-result-box {
  background: var(--bg-paper);
  border: 1.5px dashed var(--ink-black);
  border-radius: var(--radius-sketch);
  padding: 16px;
  width: 100%;
}

.resistor-value-display {
  font-family: var(--font-mono);
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--ink-black);
  display: block;
}

.resistor-tol-display {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--ink-blue);
  margin-top: 4px;
  display: block;
}

.resistor-range-note {
  font-size: 0.8rem;
  color: var(--pencil-gray);
  margin-top: 6px;
}

.resistor-controls-card {
  background: var(--bg-card);
  border: 2px solid var(--ink-black);
  border-radius: var(--radius-sketch);
  padding: 24px;
  box-shadow: var(--shadow-sketch);
}

.resistor-band-group {
  margin-bottom: 18px;
}

.resistor-band-group-title {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--ink-black);
  margin-bottom: 8px;
  display: flex;
  justify-content: space-between;
}

.color-chips-row {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.color-chip-btn {
  width: 28px;
  height: 28px;
  border-radius: 4px;
  border: 1.5px solid var(--ink-black);
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
  position: relative;
}

.color-chip-btn:hover {
  transform: scale(1.18);
  z-index: 2;
}

.color-chip-btn.active {
  transform: scale(1.22);
  box-shadow: 0 0 0 2px var(--bg-card), 0 0 0 4px var(--ink-black);
  z-index: 3;
}

/* 2. Calculadora de LED */
.tool-grid-led {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 24px;
}

.tool-form-card,
.tool-result-card {
  background: var(--bg-card);
  border: 2px solid var(--ink-black);
  border-radius: var(--radius-sketch);
  padding: 24px;
  box-shadow: var(--shadow-sketch);
}

.form-group-sketch {
  margin-bottom: 18px;
}

.form-group-sketch label {
  display: block;
  font-weight: 700;
  font-size: 0.88rem;
  margin-bottom: 6px;
  color: var(--ink-black);
}

.val-pill {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 800;
  background: var(--ink-black);
  color: #fff;
  padding: 4px 10px;
  border-radius: 4px;
  min-width: 65px;
  text-align: center;
}

[data-theme="dark"] .val-pill {
  background: var(--tape-yellow);
  color: #18181b;
}

.select-sketch,
.input-sketch {
  width: 100%;
  padding: 10px 14px;
  background: var(--bg-paper);
  border: 1.5px solid var(--ink-black);
  border-radius: var(--radius-sketch);
  font-family: var(--font-body);
  font-size: 0.92rem;
  color: var(--ink-black);
  outline: none;
}

.select-sketch:focus,
.input-sketch:focus {
  border-color: var(--ink-blue);
  box-shadow: 0 0 0 2px rgba(37, 99, 235, 0.2);
}

.formula-sketch {
  font-family: var(--font-mono);
  font-size: 1.3rem;
  font-weight: 800;
  background: var(--bg-paper);
  border: 1.5px dashed var(--ink-blue);
  padding: 12px;
  border-radius: var(--radius-sketch);
  text-align: center;
  color: var(--ink-blue);
  margin-bottom: 18px;
}

.led-calc-results {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 18px;
}

.result-metric {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 14px;
  background: var(--bg-paper);
  border: 1.5px solid var(--line-technical);
  border-radius: var(--radius-sketch);
}

.result-metric.highlight {
  background: rgba(34, 197, 94, 0.12);
  border-color: var(--led-green);
}

.result-metric .label {
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--pencil-gray);
}

.result-metric .value {
  font-family: var(--font-mono);
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--ink-black);
}

.result-metric.highlight .value {
  color: var(--led-green);
  font-size: 1.25rem;
}

.led-advice-box {
  background: rgba(37, 99, 235, 0.08);
  border-left: 4px solid var(--ink-blue);
  padding: 12px 14px;
  border-radius: 0 var(--radius-sketch) var(--radius-sketch) 0;
  font-size: 0.88rem;
  color: var(--pencil-gray);
  line-height: 1.5;
}

/* 3. Gerador pinMode C++ */
.tool-grid-pinmode {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 24px;
}

.pinmode-form-side,
.pinmode-code-side {
  background: var(--bg-card);
  border: 2px solid var(--ink-black);
  border-radius: var(--radius-sketch);
  padding: 24px;
  box-shadow: var(--shadow-sketch);
}

.pin-row-item {
  display: grid;
  grid-template-columns: 1fr 1.2fr 1.5fr 36px;
  gap: 8px;
  align-items: center;
  margin-bottom: 10px;
  background: var(--bg-paper);
  padding: 8px;
  border: 1.5px solid var(--line-technical);
  border-radius: var(--radius-sketch);
}

.btn-del-pin {
  background: rgba(220, 38, 38, 0.1);
  color: #dc2626;
  border: 1.5px solid #dc2626;
  border-radius: 4px;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}

.btn-del-pin:hover {
  background: #dc2626;
  color: #fff;
}

/* ==========================================================================
   Pinout Explorer
   ========================================================================== */
.pinout-explorer-grid {
  display: grid;
  grid-template-columns: 1fr 1.6fr;
  gap: 24px;
  align-items: start;
}

.pinout-sidebar {
  background: var(--bg-card);
  border: 2px solid var(--ink-black);
  border-radius: var(--radius-sketch);
  padding: 24px;
  box-shadow: var(--shadow-sketch);
}

.board-specs-card {
  background: var(--bg-paper);
  border: 1.5px dashed var(--ink-black);
  border-radius: var(--radius-sketch);
  padding: 16px;
}

.spec-tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 8px;
}

.spec-pill {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  background: rgba(37, 99, 235, 0.12);
  color: var(--ink-blue);
  padding: 3px 8px;
  border-radius: 4px;
}

.pinout-filter-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 16px;
}

.pin-filter-btn {
  background: var(--bg-paper);
  border: 1.5px solid var(--ink-black);
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  font-weight: 700;
  padding: 5px 8px;
  cursor: pointer;
  color: var(--pencil-gray);
  transition: all 0.15s ease;
}

.pin-filter-btn:hover {
  color: var(--ink-black);
}

.pin-filter-btn.active {
  background: var(--ink-black);
  color: #fff;
}

[data-theme="dark"] .pin-filter-btn.active {
  background: var(--tape-yellow);
  color: #18181b;
}

.pin-detail-active-card {
  background: var(--bg-paper);
  border: 2px solid var(--ink-black);
  border-radius: var(--radius-sketch);
  padding: 16px;
  margin-top: 16px;
  min-height: 120px;
}

.pinout-board-display {
  background: var(--bg-card);
  border: 2px solid var(--ink-black);
  border-radius: var(--radius-sketch);
  padding: 24px;
  box-shadow: var(--shadow-sketch);
}

.pins-grid-columns {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
  gap: 8px;
}

.pin-card-btn {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 4px;
  background: var(--bg-paper);
  border: 1.5px solid var(--line-technical);
  border-radius: 6px;
  padding: 8px 10px;
  cursor: pointer;
  text-align: left;
  transition: all 0.15s ease;
}

.pin-card-btn:hover,
.pin-card-btn.active {
  border-color: var(--ink-black);
  transform: translateY(-2px);
  box-shadow: 2px 2px 0 var(--ink-black);
}

.pin-card-btn .pin-name {
  font-family: var(--font-mono);
  font-weight: 800;
  font-size: 0.85rem;
  color: var(--ink-black);
}

.pin-type-badge {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 700;
  padding: 2px 6px;
  border-radius: 3px;
  text-transform: uppercase;
}

.pin-type-badge.power {
  background: #fee2e2;
  color: #dc2626;
}

.pin-type-badge.digital {
  background: #dbeafe;
  color: #2563eb;
}

.pin-type-badge.pwm {
  background: #f3e8ff;
  color: #9333ea;
}

.pin-type-badge.analog {
  background: #dcfce7;
  color: #16a34a;
}

.pin-type-badge.comm {
  background: #fef3c7;
  color: #d97706;
}

.pin-type-badge.strapp {
  background: #ffedd5;
  color: #ea580c;
}

/* ==========================================================================
   Combinador de Peças (Project Matcher)
   ========================================================================== */
.project-matcher-grid {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 24px;
  margin-top: 24px;
  align-items: start;
}

.components-selector-box {
  background: var(--bg-card);
  border: 2px solid var(--ink-black);
  border-radius: var(--radius-sketch);
  padding: 24px;
  box-shadow: var(--shadow-sketch);
}

.components-checkbox-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
}

.component-check-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 12px;
  background: var(--bg-paper);
  border: 1.5px solid var(--line-technical);
  border-radius: var(--radius-sketch);
  cursor: pointer;
  transition: all 0.15s ease;
  user-select: none;
}

.component-check-item:hover {
  border-color: var(--ink-black);
}

.component-check-item.selected {
  background: rgba(37, 99, 235, 0.08);
  border-color: var(--ink-blue);
  box-shadow: 2px 2px 0 var(--ink-blue);
}

.component-check-item input {
  cursor: pointer;
  accent-color: var(--ink-blue);
}

.component-check-item i {
  color: var(--ink-blue);
  width: 16px;
}

.matched-projects-column {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.matched-projects-header {
  background: var(--bg-card);
  border: 2px solid var(--ink-black);
  border-radius: var(--radius-sketch);
  padding: 16px 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  box-shadow: var(--shadow-sketch);
}

.matched-projects-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.matched-project-card {
  background: var(--bg-card);
  border: 2px solid var(--ink-black);
  border-radius: var(--radius-sketch);
  padding: 20px;
  box-shadow: var(--shadow-sketch);
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.matched-project-card.ready {
  border-left: 6px solid var(--led-green);
}

.matched-project-card.partial {
  border-left: 6px solid var(--tape-yellow);
}

/* ==========================================================================
   Snippets C++ Cheat Sheet
   ========================================================================== */
.snippet-search-box {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--bg-card);
  border: 2px solid var(--ink-black);
  border-radius: var(--radius-sketch);
  padding: 6px 14px;
  box-shadow: 2px 2px 0 var(--ink-black);
  width: 320px;
}

.snippet-search-box input {
  border: none;
  background: transparent;
  outline: none;
  width: 100%;
  font-size: 0.88rem;
  color: var(--ink-black);
}

.snippets-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(360px, 1fr));
  gap: 20px;
}

.snippet-card {
  background: var(--bg-card);
  border: 2px solid var(--ink-black);
  border-radius: var(--radius-sketch);
  padding: 20px;
  box-shadow: var(--shadow-sketch);
  display: flex;
  flex-direction: column;
}

/* ==========================================================================
   Quiz & Emissor de Certificado Maker
   ========================================================================== */
.quiz-certificate-grid {
  display: grid;
  grid-template-columns: 1fr 1.15fr;
  gap: 28px;
  align-items: start;
}

.quiz-card-sketch,
.certificate-card-sketch {
  background: var(--bg-card);
  border: 2px solid var(--ink-black);
  border-radius: var(--radius-sketch);
  padding: 28px;
  box-shadow: var(--shadow-sketch);
}

.quiz-header-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-bottom: 12px;
  border-bottom: 1.5px dashed var(--line-technical);
  margin-bottom: 18px;
}

.quiz-score-tag {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 700;
  background: rgba(34, 197, 94, 0.15);
  color: var(--led-green);
  padding: 3px 8px;
  border-radius: 4px;
}

.quiz-question-text {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--ink-black);
  line-height: 1.45;
}

.quiz-options-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 18px;
}

.quiz-option-btn {
  background: var(--bg-paper);
  border: 1.5px solid var(--ink-black);
  border-radius: var(--radius-sketch);
  padding: 12px 14px;
  text-align: left;
  font-family: var(--font-body);
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--ink-black);
  cursor: pointer;
  transition: all 0.15s ease;
  display: flex;
  align-items: center;
  gap: 10px;
}

.quiz-option-btn:hover {
  transform: translateX(4px);
  border-color: var(--ink-blue);
}

.quiz-option-btn.correct {
  background: #dcfce7 !important;
  border-color: #16a34a !important;
  color: #16a34a !important;
}

.quiz-option-btn.incorrect {
  background: #fee2e2 !important;
  border-color: #dc2626 !important;
  color: #dc2626 !important;
}

.quiz-feedback-box {
  padding: 12px 14px;
  border-radius: var(--radius-sketch);
  font-size: 0.88rem;
  margin-bottom: 16px;
  line-height: 1.5;
}

.quiz-feedback-box.correct {
  background: rgba(34, 197, 94, 0.1);
  border-left: 4px solid var(--led-green);
  color: var(--pencil-gray);
}

.quiz-feedback-box.incorrect {
  background: rgba(220, 38, 38, 0.1);
  border-left: 4px solid #dc2626;
  color: var(--pencil-gray);
}

.cert-canvas-wrapper {
  background: #000;
  border: 2px solid var(--ink-black);
  border-radius: var(--radius-sketch);
  overflow: hidden;
  box-shadow: var(--shadow-sketch);
  display: flex;
  justify-content: center;
}

#certificate-canvas {
  width: 100%;
  height: auto;
  display: block;
}

/* ==========================================================================
   Footer
   ========================================================================== */
.footer {
  background: var(--bg-card);
  border-top: 2px solid var(--ink-black);
  padding: 50px 0 24px;
  margin-top: 60px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 32px;
  margin-bottom: 36px;
}

.footer-bottom {
  padding-top: 18px;
  border-top: 1.5px dashed var(--line-technical);
  display: flex;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--pencil-light);
}

/* ==========================================================================
   Acessibilidade: Foco Visível por Teclado
   ========================================================================== */
a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
[tabindex]:focus-visible {
  outline: 3px solid var(--ink-blue);
  outline-offset: 2px;
  border-radius: var(--radius-sketch);
}

.color-chip-btn:focus-visible {
  outline-offset: 3px;
}


/* Responsividade */
@media (max-width: 1024px) {
  .hero-grid-sketch {
    grid-template-columns: 1fr;
  }

  .tracks-grid-sketch,
  .resources-grid-sketch {
    grid-template-columns: 1fr;
  }

  .tool-grid-resistor,
  .tool-grid-led,
  .tool-grid-pinmode,
  .pinout-explorer-grid,
  .project-matcher-grid,
  .quiz-certificate-grid {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
  }

  .hero-title-sketch {
    font-size: 2.3rem;
  }

  .footer-grid {
    grid-template-columns: 1fr;
  }

  .footer-bottom {
    flex-direction: column;
    gap: 8px;
    text-align: center;
  }
}

/* ==========================================================================
   Navegação por páginas (SPA)
   ========================================================================== */
.pagina {
  display: none;
}

.pagina.ativa {
  display: block;
  animation: paginaEntrar 0.3s ease;
}

@keyframes paginaEntrar {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: translateY(0); }
}

@media (max-width: 1200px) {
  .nav-link {
    padding: 8px 6px;
    font-size: 0.78rem;
  }
  .logo-brand-name {
    font-size: 1.2rem;
  }
}

/* ==========================================================================
   Progresso do Aluno (header + página)
   ========================================================================== */
.progresso-header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 4px 8px;
}

.progresso-header-track {
  width: 80px;
  height: 10px;
  border: 2px solid var(--ink-blue);
  border-radius: 99px;
  overflow: hidden;
  background: var(--bg-paper);
}

.progresso-header-fill {
  height: 100%;
  width: 0%;
  background: var(--ink-blue);
  transition: width 0.4s ease;
}

.progresso-header-pct {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 800;
  color: var(--ink-blue);
}

.progresso-card {
  max-width: 560px;
  margin: 0 auto;
  padding: 32px;
  background: var(--bg-card);
  border: 2px solid var(--ink-blue);
  border-radius: var(--radius-sketch);
  box-shadow: var(--shadow-sketch);
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: 16px;
  align-items: center;
}

.progresso-numero-grande {
  font-family: var(--font-mono);
  font-size: 3.2rem;
  font-weight: 800;
  color: var(--ink-blue);
}

.progresso-track-pagina {
  width: 100%;
  height: 16px;
  border: 2px solid var(--ink-blue);
  border-radius: 99px;
  overflow: hidden;
}

.progresso-fill-pagina {
  height: 100%;
  width: 0%;
  background: var(--ink-blue);
  transition: width 0.4s ease;
}

.progresso-texto {
  color: var(--pencil-gray);
  font-size: 0.95rem;
}

/* ==========================================================================
   Menu Hamburguer (mobile)
   ========================================================================== */
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 10px;
  background: var(--bg-card);
  border: 2px solid var(--ink-blue);
  border-radius: var(--radius-sketch);
  cursor: pointer;
}

.hamburger span {
  display: block;
  width: 100%;
  height: 3px;
  background: var(--ink-blue);
  border-radius: 2px;
  transition: transform 0.3s ease, opacity 0.3s ease;
}

/* Animação X quando aberto */
.hamburger.is-open span:nth-child(1) { transform: translateY(8px) rotate(45deg); }
.hamburger.is-open span:nth-child(2) { opacity: 0; }
.hamburger.is-open span:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }

/* ---- Mobile ---- */
@media (max-width: 820px) {
  .hamburger { display: flex; }

  .nav-mobile {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    transform: translateY(-110%);
    transition: transform 0.3s ease;
    background: var(--bg-paper);
    border-bottom: 2px solid var(--ink-blue);
    box-shadow: var(--shadow-sketch);
    padding: 72px 20px 20px;
    z-index: 999;
  }

  .nav-mobile.is-open { transform: translateY(0); }

  .nav-mobile .nav-links {
    flex-direction: column;
    gap: 8px;
  }
}

/* ==========================================================================
   Mascote Bips (glossário flutuante)
   ========================================================================== */
.mascote-btn {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 64px;
  height: 64px;
  font-size: 2rem;
  background: var(--bg-card, #fff);
  border: 2px solid var(--ink-blue, #1e3a5f);
  border-radius: 50%;
  box-shadow: var(--shadow-sketch, 3px 3px 0 rgba(0,0,0,0.2));
  cursor: pointer;
  z-index: 1001;
  transition: transform 0.2s ease;
}

.mascote-btn:hover {
  transform: scale(1.1) rotate(-6deg);
}

.mascote-balao {
  position: fixed;
  bottom: 100px;
  right: 24px;
  width: min(360px, calc(100vw - 32px));
  max-height: 60vh;
  display: flex;
  flex-direction: column;
  background: var(--bg-card, #fff);
  border: 2px solid var(--ink-blue, #1e3a5f);
  border-radius: var(--radius-sketch, 8px);
  box-shadow: var(--shadow-sketch, 3px 3px 0 rgba(0,0,0,0.2));
  z-index: 1000;
}

.mascote-balao[hidden] { display: none; }

.mascote-balao-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 16px;
  border-bottom: 2px solid var(--ink-blue, #1e3a5f);
  font-weight: bold;
}

.mascote-fechar {
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  line-height: 1;
}

.mascote-busca {
  margin: 12px 16px 0;
  padding: 8px 12px;
  border: 2px solid var(--ink-blue, #1e3a5f);
  border-radius: 6px;
  font-family: inherit;
}

.glossario-lista {
  overflow-y: auto;
  padding: 12px 16px 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.glossario-card {
  border-bottom: 1px dashed var(--pencil-gray, #999);
  padding-bottom: 10px;
}

.glossario-card h3 {
  margin: 0 0 4px;
  color: var(--ink-blue, #1e3a5f);
  font-size: 0.95rem;
}

.glossario-card p {
  margin: 0;
  font-size: 0.85rem;
  line-height: 1.45;
}

.glossario-vazio {
  text-align: center;
  color: var(--pencil-gray, #999);
}

/* No celular, o balão ocupa mais a tela */
@media (max-width: 480px) {
  .mascote-balao {
    right: 16px;
    bottom: 90px;
  }
  .mascote-btn {
    bottom: 16px;
    right: 16px;
  }
}

/* Cole no style.css */
.mascote-fala {
  position: fixed;
  bottom: 100px;
  right: 24px;
  max-width: 220px;
  background: var(--bg-card, #fff);
  border: 2px solid var(--ink-blue, #1e3a5f);
  border-radius: 12px;
  padding: 12px 16px;
  font-size: 0.85rem;
  box-shadow: var(--shadow-sketch, 3px 3px 0 rgba(0,0,0,0.2));
  z-index: 1001;
}
.mascote-fala::after {
  content: "";
  position: absolute;
  bottom: -10px;
  right: 24px;
  border: 10px solid transparent;
  border-top-color: var(--ink-blue, #1e3a5f);
  border-bottom: 0;
}

.mascote-btn:hover {
  animation: bips-wiggle 0.5s ease infinite;
}
@keyframes bips-wiggle {
  0%, 100% { transform: rotate(-6deg) scale(1.05); }
  50% { transform: rotate(6deg) scale(1.05); }
}

/* Botões extra */
.btn-xs {
  padding: 4px 10px;
  font-size: 0.78rem;
}

.btn-outline {
  background: transparent;
  border: 2px solid var(--ink-blue, #1e3a5f);
  color: var(--ink-blue, #1e3a5f);
}

.btn-outline:hover {
  background: var(--ink-blue, #1e3a5f);
  color: var(--bg-card, #fff);
}

/* Títulos das páginas internas */
.section-title {
  font-family: var(--font-head, var(--font-body, sans-serif));
  font-size: 1.6rem;
  margin-bottom: 8px;
}

.section-subtitle {
  color: var(--pencil-gray, #666);
  margin-bottom: 16px;
}

/* Header com scroll */
.header.scrolled {
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.15);
}

.login-tabs { display: flex; gap: 8px; margin-bottom: 16px; }
.login-tabs .ativo { font-weight: bold; border-bottom: 2px solid currentColor; }
.login-form { display: flex; flex-direction: column; gap: 10px; max-width: 320px; }
.erro-msg { color: #c0392b; min-height: 1.2em; }
.badge { background: #eee; display: inline-block; padding: 2px 10px; border-radius: 8px; }
.oculto { display: none; }

#auth-btn {
  background: var(--ink-blue);
  color: #fff;
  border: 2px solid var(--ink-black);
  border-radius: var(--radius-sketch);
  padding: 8px 14px;
  font-weight: 700;
  cursor: pointer;
  font-family: var(--font-body);
  box-shadow: 1px 1px 0px var(--ink-black);
}

/* ===== CONTA / LOGIN ===== */
.login-tabs { display: flex; gap: 10px; margin-bottom: 20px; }
.login-tabs button {
  padding: 8px 20px; cursor: pointer; font-weight: 700;
  background: transparent; border: 2px solid var(--ink-blue);
  border-radius: var(--radius-sketch); color: var(--ink-blue);
  font-family: var(--font-body);
}
.login-tabs button.ativo { background: var(--ink-blue); color: #fff; }

.login-form { display: flex; flex-direction: column; gap: 12px; max-width: 320px; }
.login-form input {
  padding: 10px 12px; border: 2px solid var(--ink-black);
  border-radius: var(--radius-sketch); font-family: var(--font-body);
}
.login-form button {
  padding: 10px; font-weight: 700; cursor: pointer;
  background: var(--ink-blue); color: #fff;
  border: 2px solid var(--ink-black); border-radius: var(--radius-sketch);
  box-shadow: 1px 1px 0 var(--ink-black);
}
.login-form .btn-secundario { background: #fff; color: var(--ink-black); }
.erro-msg { color: #c0392b; font-weight: 700; min-height: 1em; }
.oculto { display: none !important; }

#area-perfil p { font-size: 1.2rem; }
#btn-logout {
  padding: 8px 16px; cursor: pointer; margin-top: 12px;
  background: #fff; color: var(--ink-black);
  border: 2px solid var(--ink-black); border-radius: var(--radius-sketch);
  font-weight: 700; font-family: var(--font-body);
}

#auth-btn {
  background: var(--ink-blue); color: #fff;
  border: 2px solid var(--ink-black); border-radius: var(--radius-sketch);
  padding: 8px 14px; font-weight: 700; cursor: pointer;
  font-family: var(--font-body); box-shadow: 1px 1px 0 var(--ink-black);
  white-space: nowrap;   /* ✅ impede a quebra de linha */
}