/* =========================================================
   Escola Front-End Particular
   CSS consolidado — Base visual, responsiva e acessível
   Autor: Mateus Ernandes
   Stack: HTML + CSS puro
   ========================================================= */

/* =========================
   1. Variáveis globais
   ========================= */

:root {
  --color-bg: #0f172a;
  --color-bg-soft: rgba(15, 23, 42, 0.92);
  --color-surface: rgba(15, 23, 42, 0.9);
  --color-surface-dark: rgba(2, 6, 23, 0.45);

  --color-text: #e5e7eb;
  --color-muted: #cbd5e1;
  --color-subtle: #94a3b8;
  --color-title: #f8fafc;

  --color-cyan: #38bdf8;
  --color-cyan-soft: rgba(56, 189, 248, 0.12);
  --color-purple: #c084fc;
  --color-purple-strong: #a855f7;
  --color-green: #22c55e;
  --color-green-soft: rgba(34, 197, 94, 0.16);
  --color-yellow: #facc15;

  --border-soft: rgba(148, 163, 184, 0.22);
  --border-cyan: rgba(56, 189, 248, 0.45);
  --border-green: rgba(34, 197, 94, 0.45);
  --border-purple: rgba(168, 85, 247, 0.42);
  --border-yellow: rgba(250, 204, 21, 0.38);

  --shadow-card: 0 18px 45px rgba(0, 0, 0, 0.22);

  --radius-sm: 12px;
  --radius-md: 16px;
  --radius-lg: 18px;
  --radius-pill: 999px;

  --space-xs: 8px;
  --space-sm: 12px;
  --space-md: 16px;
  --space-lg: 18px;
  --space-xl: 24px;

  --container: 1100px;
}

/* =========================
   2. Reset e base
   ========================= */

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
}

img,
picture,
svg,
video {
  display: block;
  max-width: 100%;
}

a {
  transition:
    background 0.2s ease,
    border-color 0.2s ease,
    color 0.2s ease,
    transform 0.2s ease;
}

a:focus-visible,
button:focus-visible {
  outline: 3px solid var(--color-cyan);
  outline-offset: 4px;
}

code {
  padding: 2px 6px;
  border-radius: 6px;
  background: rgba(15, 23, 42, 0.9);
  color: #7dd3fc;
}

.skip-link {
  position: absolute;
  top: 12px;
  left: 12px;
  z-index: 999;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  color: #0f172a;
  background: var(--color-cyan);
  font-weight: 800;
  text-decoration: none;
  transform: translateY(-140%);
}

.skip-link:focus {
  transform: translateY(0);
}

/* =========================
   3. Layout global
   ========================= */

.container {
  width: min(var(--container), calc(100% - 32px));
  margin: 32px auto;
}

.classroom-layout {
  display: grid;
  gap: var(--space-lg);
}

.grid,
.classroom-grid,
.classroom-status-grid,
.mission-grid,
.mentor-grid,
.focus-grid,
.active-lesson-grid,
.version-grid,
.progress-stats,
.home-nav-grid {
  display: grid;
  gap: 14px;
}

.grid,
.classroom-grid {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.classroom-status-grid,
.mission-grid,
.mentor-grid,
.focus-grid,
.active-lesson-grid,
.version-grid {
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  margin-top: var(--space-lg);
}

.progress-stats {
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  margin-top: var(--space-lg);
}

.home-nav-grid {
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  margin-top: var(--space-lg);
}

/* =========================
   4. Hero
   ========================= */

.hero {
  padding: 64px 24px;
  text-align: center;
  background:
    linear-gradient(135deg, rgba(37, 99, 235, 0.35), rgba(15, 23, 42, 0.95)),
    #111827;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.home-hero {
  background:
    radial-gradient(circle at top left, rgba(56, 189, 248, 0.28), transparent 35%),
    radial-gradient(circle at top right, rgba(168, 85, 247, 0.25), transparent 35%),
    linear-gradient(135deg, rgba(15, 23, 42, 0.96), rgba(30, 41, 59, 0.92)),
    #0f172a;
}

.classroom-hero {
  background:
    linear-gradient(135deg, rgba(14, 165, 233, 0.28), rgba(124, 58, 237, 0.22)),
    #0f172a;
}

.eyebrow {
  margin: 0 0 var(--space-sm);
  color: var(--color-cyan);
  font-size: 0.85rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.hero h1 {
  margin: 0;
  font-size: clamp(2rem, 7vw, 4rem);
  line-height: 1.1;
}

.hero p {
  max-width: 780px;
  margin: var(--space-lg) auto 0;
  color: var(--color-muted);
  font-size: 1.05rem;
}

/* =========================
   5. Cards
   ========================= */

.card {
  margin-bottom: var(--space-lg);
  padding: var(--space-xl);
  background: var(--color-surface);
  border: 1px solid rgba(148, 163, 184, 0.25);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  overflow-wrap: anywhere;
}

.card h2 {
  margin-top: 0;
  color: var(--color-title);
  line-height: 1.2;
}

.card h3 {
  color: var(--color-title);
}

.card p,
.card li {
  color: var(--color-muted);
}

.card p {
  max-width: 72ch;
}

.card ul,
.mastery-list,
.step-list {
  padding-left: 20px;
}

.mastery-list li,
.step-list li {
  margin-bottom: 10px;
}

.status,
.classroom-current,
.classroom-index {
  border-color: var(--border-cyan);
}

.focus-mode,
.next-action,
.domain-card,
.version-seal {
  border-color: var(--border-green);
}

.active-lesson {
  border-color: var(--border-purple);
}

.progress-panel {
  border-color: var(--border-yellow);
}

.version-seal {
  background:
    linear-gradient(135deg, rgba(34, 197, 94, 0.08), rgba(15, 23, 42, 0.92)),
    rgba(15, 23, 42, 0.9);
}

/* =========================
   6. Botões e ações
   ========================= */

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-top: var(--space-sm);
}

.hero-actions {
  justify-content: center;
}

.button {
  display: inline-block;
  margin-top: var(--space-sm);
  padding: 12px 16px;
  color: #0f172a;
  background: var(--color-cyan);
  border-radius: var(--radius-pill);
  font-weight: 800;
  text-decoration: none;
  -webkit-tap-highlight-color: transparent;
}

.button:hover {
  background: #7dd3fc;
}

.button.secondary {
  color: var(--color-text);
  background: transparent;
  border: 1px solid rgba(56, 189, 248, 0.7);
}

.button.secondary:hover {
  background: var(--color-cyan-soft);
}

.button:active,
.lesson-list a:active,
.home-nav-grid a:active,
.index-links a:active {
  transform: scale(0.98);
}

/* =========================
   7. Blocos internos
   ========================= */

.classroom-status-grid div,
.mission-grid div,
.mentor-grid article,
.error-box,
.focus-grid div,
.active-lesson-grid article,
.version-grid article,
.progress-stats article,
.level-list div,
.timeline-list article {
  padding: var(--space-md);
  border-radius: var(--radius-md);
  background: var(--color-surface-dark);
  border: 1px solid rgba(148, 163, 184, 0.18);
}

.classroom-status-grid strong,
.mission-grid strong {
  display: block;
  color: var(--color-cyan);
  margin-bottom: 6px;
}

.classroom-status-grid span,
.mission-grid p,
.mentor-grid p,
.error-box p,
.focus-grid p,
.active-lesson-grid p,
.version-grid p,
.timeline-list p {
  color: var(--color-muted);
  margin: 0;
}

.focus-grid strong {
  display: block;
  color: var(--color-green);
  margin-bottom: 6px;
}

.active-lesson-grid strong,
.timeline-list strong {
  display: block;
  color: var(--color-purple);
  margin-bottom: 8px;
}

.version-grid strong {
  display: block;
  color: #86efac;
  margin-bottom: 6px;
}

.mentor-grid h3 {
  margin-top: 0;
  color: var(--color-title);
}

.error-box {
  margin-top: 14px;
}

.error-box strong {
  display: block;
  color: var(--color-title);
  margin-top: 8px;
}

/* =========================
   8. Links de listas, índice e navegação
   ========================= */

.lesson-list,
.command-list,
.level-list,
.timeline-list {
  display: grid;
  gap: 12px;
  margin-top: var(--space-lg);
}

.lesson-list a,
.lesson-locked,
.index-links a,
.home-nav-grid a {
  display: block;
  padding: 14px 16px;
  border-radius: 14px;
  text-decoration: none;
  color: var(--color-text);
  background: rgba(15, 23, 42, 0.75);
  border: 1px solid var(--border-soft);
  -webkit-tap-highlight-color: transparent;
}

.lesson-list a:hover,
.index-links a:hover,
.home-nav-grid a:hover {
  border-color: rgba(56, 189, 248, 0.75);
  background: rgba(56, 189, 248, 0.08);
}

.lesson-locked {
  color: var(--color-subtle);
  border-style: dashed;
}

.index-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: var(--space-lg);
}

.index-links a {
  display: inline-block;
  padding: 10px 14px;
  border-radius: var(--radius-pill);
  font-weight: 800;
  font-size: 0.92rem;
}

.home-nav-grid a {
  padding: var(--space-lg);
}

.home-nav-grid strong {
  display: block;
  color: var(--color-title);
  margin-bottom: 8px;
  font-size: 1.05rem;
}

.home-nav-grid span {
  display: block;
  color: var(--color-muted);
}

/* =========================
   9. Código e comandos
   ========================= */

.command-list code {
  display: block;
  padding: 12px 14px;
  border-radius: var(--radius-sm);
  background: rgba(2, 6, 23, 0.72);
  border: 1px solid rgba(148, 163, 184, 0.2);
  color: #7dd3fc;
  overflow-wrap: anywhere;
}

/* =========================
   10. Domínio e níveis
   ========================= */

.domain-gate {
  list-style: none;
  padding-left: 0;
}

.domain-gate li {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: var(--space-sm);
  color: var(--color-muted);
}

.domain-gate span {
  display: inline-grid;
  place-items: center;
  width: 24px;
  height: 24px;
  border-radius: var(--radius-pill);
  background: var(--color-green-soft);
  color: #86efac;
  font-weight: 800;
}

.level-list div {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.level-list strong {
  display: inline-grid;
  place-items: center;
  width: 32px;
  height: 32px;
  border-radius: var(--radius-pill);
  background: var(--color-cyan);
  color: #0f172a;
}

.level-list span {
  color: var(--color-muted);
}

/* =========================
   11. Progresso
   ========================= */

.progress-track {
  width: 100%;
  height: 14px;
  margin: var(--space-lg) 0;
  border-radius: var(--radius-pill);
  background: rgba(2, 6, 23, 0.72);
  border: 1px solid rgba(148, 163, 184, 0.18);
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  border-radius: var(--radius-pill);
  background: linear-gradient(90deg, var(--color-cyan), var(--color-purple-strong), var(--color-yellow));
}

.progress-stats article {
  text-align: center;
}

.progress-stats strong {
  display: block;
  color: var(--color-yellow);
  font-size: 2rem;
  line-height: 1;
  margin-bottom: 8px;
}

.progress-stats span,
.progress-note {
  color: var(--color-muted);
}

.progress-note {
  margin-top: var(--space-lg);
}

/* =========================
   12. Imagens e mídia
   ========================= */

.study-image {
  display: block;
  width: 100%;
  max-height: 360px;
  object-fit: cover;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(148, 163, 184, 0.25);
  margin-top: var(--space-md);
}

/* =========================
   13. Scroll por âncoras
   ========================= */

#aula-atual,
#modo-foco,
#mapa-modulo,
#aula-ativa,
#progresso-visual,
#banca-mestre,
#laboratorio,
#erros-quiz,
#entregas,
#mercado,
#dominio,
#versao-sala,
#proxima-acao {
  scroll-margin-top: 18px;
}

/* =========================
   14. Rodapé
   ========================= */

.footer {
  padding: 28px 24px;
  text-align: center;
  color: var(--color-subtle);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

/* =========================
   15. Responsividade
   ========================= */

@media (max-width: 720px) {
  body {
    font-size: 16px;
  }

  .hero {
    padding: 48px 18px;
  }

  .hero h1 {
    font-size: clamp(2rem, 10vw, 3rem);
  }

  .container {
    width: min(100% - 24px, var(--container));
    margin: 24px auto;
  }

  .card {
    padding: 18px;
    border-radius: 14px;
  }

  .actions {
    width: 100%;
  }

  .actions .button {
    width: 100%;
    text-align: center;
  }

  .hero-actions {
    justify-content: flex-start;
  }

  .index-links {
    display: grid;
    grid-template-columns: 1fr;
  }

  .index-links a {
    width: 100%;
    text-align: center;
  }

  .progress-stats strong {
    font-size: 1.65rem;
  }

  .command-list code {
    font-size: 0.9rem;
  }
}

@media (max-width: 420px) {
  .container {
    width: min(100% - 18px, var(--container));
  }

  .hero {
    padding: 42px 14px;
  }

  .card {
    padding: 16px;
  }

  .index-links a,
  .lesson-list a,
  .home-nav-grid a {
    padding: 13px;
  }
}

/* =========================
   16. Preferências do usuário
   ========================= */

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    transition: none !important;
  }
}