/* ================================================================
   ENEM SPEEDRUN — Design System gov.br / MEC
   ================================================================ */

@import url('https://fonts.googleapis.com/css2?family=Source+Sans+3:wght@300;400;600;700&display=swap');

/* ─── Variáveis ──────────────────────────────────────────────────────── */
:root {
  --azul-primario:   #1351B4;
  --azul-escuro:     #071D41;
  --azul-claro:      #2670E8;
  --azul-hover:      #0C3577;
  --verde:           #168821;
  --verde-claro:     #E3F5E1;
  --amarelo:         #FFCD07;
  --cinza-bg:        #F8F8F8;
  --cinza-borda:     #CCCCCC;
  --cinza-medio:     #888888;
  --texto-escuro:    #1B1B1B;
  --texto-medio:     #4A4A4A;
  --branco:          #FFFFFF;
  --erro:            #C41E3A;
  --sucesso:         #168821;
  --sombra-card:     0 2px 8px rgba(0,0,0,0.12);
  --sombra-card-hover: 0 6px 20px rgba(19,81,180,0.18);
  --radius:          4px;
  --radius-lg:       8px;
  --transition:      0.2s ease;
  --font:            'Source Sans 3', 'Segoe UI', sans-serif;
}

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

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

body {
  font-family: var(--font);
  background: var(--cinza-bg);
  color: var(--texto-escuro);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--azul-primario); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ─── Barra do Governo Federal (topo) ───────────────────────────────── */
.gov-bar {
  background: var(--azul-escuro);
  color: var(--branco);
  font-size: 0.75rem;
  padding: 6px 0;
  border-bottom: 3px solid var(--amarelo);
}

.gov-bar .container {
  display: flex;
  align-items: center;
  gap: 10px;
}

.gov-bar .gov-logo {
  font-weight: 700;
  font-size: 0.85rem;
  letter-spacing: 0.03em;
  color: var(--branco);
  display: flex;
  align-items: center;
  gap: 6px;
}

.gov-bar .gov-logo span {
  color: var(--amarelo);
}

.gov-bar .gov-separator {
  color: var(--cinza-medio);
  font-size: 0.7rem;
}

/* ─── Header principal ───────────────────────────────────────────────── */
.site-header {
  background: var(--azul-primario);
  padding: 0;
  box-shadow: 0 2px 8px rgba(0,0,0,0.2);
}

.site-header .header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 0;
  gap: 20px;
}

.site-header .brand {
  display: flex;
  align-items: center;
  gap: 14px;
  color: var(--branco);
  text-decoration: none;
}

.site-header .brand-icon {
  width: 48px;
  height: 48px;
  background: var(--branco);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.site-header .brand-icon svg {
  width: 28px;
  height: 28px;
  fill: var(--azul-primario);
}

.site-header .brand-text {
  display: flex;
  flex-direction: column;
}

.site-header .brand-title {
  font-size: 1.2rem;
  font-weight: 700;
  line-height: 1.2;
  color: var(--branco);
}

.site-header .brand-subtitle {
  font-size: 0.75rem;
  color: rgba(255,255,255,0.75);
  font-weight: 400;
}

.site-header nav {
  display: flex;
  align-items: center;
  gap: 4px;
}

.site-header nav a {
  color: rgba(255,255,255,0.85);
  font-size: 0.9rem;
  padding: 8px 14px;
  border-radius: var(--radius);
  transition: background var(--transition), color var(--transition);
  text-decoration: none;
}

.site-header nav a:hover,
.site-header nav a.active {
  background: rgba(255,255,255,0.15);
  color: var(--branco);
  text-decoration: none;
}

.site-header .btn-logout {
  background: rgba(255,255,255,0.15);
  color: var(--branco);
  border: 1px solid rgba(255,255,255,0.3);
  padding: 6px 14px;
  border-radius: var(--radius);
  font-size: 0.85rem;
  cursor: pointer;
  transition: background var(--transition);
  font-family: var(--font);
}

.site-header .btn-logout:hover {
  background: rgba(255,255,255,0.25);
}

/* ─── Container ──────────────────────────────────────────────────────── */
.container {
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 20px;
}

/* ─── Main content ───────────────────────────────────────────────────── */
main {
  flex: 1;
  padding: 32px 0 48px;
}

/* ─── Page title ─────────────────────────────────────────────────────── */
.page-title {
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--azul-escuro);
  margin-bottom: 8px;
}

.page-subtitle {
  font-size: 1rem;
  color: var(--texto-medio);
  margin-bottom: 28px;
}

/* ─── Botões ─────────────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 24px;
  border-radius: var(--radius);
  font-family: var(--font);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  border: 2px solid transparent;
  line-height: 1.4;
  text-decoration: none;
}

.btn-primary {
  background: var(--azul-primario);
  color: var(--branco);
  border-color: var(--azul-primario);
}
.btn-primary:hover {
  background: var(--azul-hover);
  border-color: var(--azul-hover);
  color: var(--branco);
  text-decoration: none;
}

.btn-outline {
  background: transparent;
  color: var(--azul-primario);
  border-color: var(--azul-primario);
}
.btn-outline:hover {
  background: var(--azul-primario);
  color: var(--branco);
  text-decoration: none;
}

.btn-green {
  background: var(--verde);
  color: var(--branco);
  border-color: var(--verde);
}
.btn-green:hover {
  background: #0f6418;
  text-decoration: none;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn-lg {
  padding: 14px 32px;
  font-size: 1.05rem;
}

.btn-full { width: 100%; }

/* ─── Cards ──────────────────────────────────────────────────────────── */
.card {
  background: var(--branco);
  border: 1px solid var(--cinza-borda);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--sombra-card);
}

/* ─── Inputs e Forms ─────────────────────────────────────────────────── */
.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--texto-escuro);
  margin-bottom: 6px;
}

.form-group input {
  width: 100%;
  padding: 10px 14px;
  border: 1px solid var(--cinza-borda);
  border-bottom: 2px solid var(--azul-primario);
  border-radius: var(--radius) var(--radius) 0 0;
  font-family: var(--font);
  font-size: 0.95rem;
  color: var(--texto-escuro);
  background: var(--branco);
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
}

.form-group input:focus {
  border-color: var(--azul-claro);
  box-shadow: 0 2px 0 var(--azul-claro);
}

.form-group input::placeholder {
  color: var(--cinza-medio);
}

/* ─── Alertas ────────────────────────────────────────────────────────── */
.alert {
  padding: 12px 16px;
  border-radius: var(--radius);
  font-size: 0.9rem;
  margin-bottom: 16px;
  border-left: 4px solid;
}

.alert-error {
  background: #FFF0F0;
  color: var(--erro);
  border-color: var(--erro);
}

.alert-success {
  background: var(--verde-claro);
  color: var(--sucesso);
  border-color: var(--sucesso);
}

.alert-info {
  background: #E8F0FF;
  color: var(--azul-primario);
  border-color: var(--azul-primario);
}

/* ─── Loading spinner ────────────────────────────────────────────────── */
.spinner {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 3px solid rgba(255,255,255,0.4);
  border-top-color: var(--branco);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

.spinner-blue {
  border-color: rgba(19,81,180,0.2);
  border-top-color: var(--azul-primario);
}

@keyframes spin { to { transform: rotate(360deg); } }

.loading-overlay {
  position: fixed;
  inset: 0;
  background: rgba(255,255,255,0.85);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
  z-index: 1000;
}

.loading-overlay p {
  color: var(--azul-primario);
  font-weight: 600;
  font-size: 1rem;
}

/* ─── Badge de posição ───────────────────────────────────────────────── */
.badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 2px 10px;
  border-radius: 20px;
  font-size: 0.78rem;
  font-weight: 700;
}

.badge-blue { background: #E8F0FF; color: var(--azul-primario); }
.badge-green { background: var(--verde-claro); color: var(--verde); }
.badge-gold { background: #FFF9E6; color: #B8860B; }

/* ─── Breadcrumb ─────────────────────────────────────────────────────── */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.82rem;
  color: var(--cinza-medio);
  margin-bottom: 20px;
}

.breadcrumb a {
  color: var(--azul-primario);
}

.breadcrumb span { color: var(--cinza-medio); }

/* ─── Footer ─────────────────────────────────────────────────────────── */
footer {
  background: var(--azul-escuro);
  color: rgba(255,255,255,0.7);
  padding: 20px 0;
  font-size: 0.82rem;
  text-align: center;
  margin-top: auto;
}

footer strong { color: var(--branco); }

/* ─── Responsividade ─────────────────────────────────────────────────── */
@media (max-width: 768px) {
  .site-header .header-inner { flex-wrap: wrap; }
  .site-header nav { display: none; }
  .page-title { font-size: 1.3rem; }
  main { padding: 20px 0 32px; }
}

/* ─── Animações de entrada ───────────────────────────────────────────── */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to   { opacity: 1; transform: translateY(0); }
}

.fade-in { animation: fadeIn 0.35s ease forwards; }

/*  Achievement Toast (Steam-style)  */
#achievement-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 12px;
  pointer-events: none;
}

.achievement-toast {
  background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
  border: 1px solid rgba(255, 205, 7, 0.4);
  border-left: 4px solid #FFCD07;
  border-radius: 10px;
  padding: 14px 18px;
  width: 320px;
  box-shadow: 0 8px 32px rgba(0,0,0,0.6);
  transform: translateX(360px);
  opacity: 0;
  transition: transform 0.5s cubic-bezier(0.34, 1.56, 0.64, 1), opacity 0.5s ease;
  pointer-events: auto;
  cursor: pointer;
}

.achievement-toast.show {
  transform: translateX(0);
  opacity: 1;
}

.ach-header {
  font-size: 0.7rem;
  font-weight: 700;
  color: #FFCD07;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-bottom: 10px;
  opacity: 0.9;
}

.ach-body {
  display: flex;
  align-items: center;
  gap: 14px;
}

.ach-icon {
  font-size: 2.4rem;
  line-height: 1;
  flex-shrink: 0;
  filter: drop-shadow(0 0 8px rgba(255,205,7,0.5));
}

.ach-info {}

.ach-title {
  font-size: 1rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 3px;
}

.ach-desc {
  font-size: 0.78rem;
  color: rgba(255,255,255,0.6);
  line-height: 1.4;
}

/* ─── Imagens no Quiz ───────────────────────────────────────────────── */
.question-main-img {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
  margin: 16px auto;
  display: block;
  box-shadow: 0 4px 12px rgba(0,0,0,0.08);
  border: 1px solid var(--cinza-borda);
  background: var(--branco);
}

.question-inline-img {
  max-width: 100%;
  height: auto;
  display: block;
  margin: 12px 0;
  border-radius: var(--radius);
}

.question-context img, 
.question-text img {
  max-width: 100%;
  height: auto;
}