/* ==========================================================================
   TREINA.ONLINE - design system (PHP puro, sem frameworks CSS externos)
   ========================================================================== */

:root {
  --color-navy: #101935;
  --color-navy-light: #1c2a52;
  --color-red: #ef3f3f;
  --color-red-dark: #d62f2f;
  --color-bg: #f4f6fb;
  --color-card: #ffffff;
  --color-border: #e7eaf3;
  --color-text: #1c2233;
  --color-text-muted: #6b7280;
  --color-gold: #f5b400;
  --radius-lg: 16px;
  --radius-md: 12px;
  --radius-sm: 8px;
  --shadow-card: 0 8px 24px rgba(16, 25, 53, 0.08);
  --shadow-card-hover: 0 16px 32px rgba(16, 25, 53, 0.14);
  --container: 1220px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  max-width: 100%;
  overflow-x: hidden;
}

body {
  font-family: var(--font);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
ul { list-style: none; margin: 0; padding: 0; }

.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 20px;
}

/* ---------- Botoes ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 22px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 15px;
  border: 2px solid transparent;
  cursor: pointer;
  transition: transform .15s ease, box-shadow .15s ease, background .15s ease;
}
.btn:active { transform: translateY(1px); }

.btn-primary {
  background: var(--color-red);
  color: #fff;
}
.btn-primary:hover { background: var(--color-red-dark); box-shadow: 0 8px 18px rgba(239,63,63,.35); }

.btn-outline {
  background: transparent;
  border-color: var(--color-navy);
  color: var(--color-navy);
}
.btn-outline:hover { background: var(--color-navy); color: #fff; }

.btn-block { width: 100%; }
.btn-sm { padding: 8px 16px; font-size: 13px; }

/* ---------- Topbar + Header ---------- */

.topbar {
  background: var(--color-navy);
  color: #cfd6ea;
  font-size: 13px;
}
.topbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 36px;
}
.topbar a { color: #fff; }

.site-header {
  background: #fff;
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 50;
}
.site-header .container {
  display: flex;
  align-items: center;
  gap: 32px;
  height: 84px;
}
.site-logo { display: flex; align-items: center; flex-shrink: 0; }
.site-logo img { height: 38px; width: auto; }

.main-nav { display: flex; align-items: center; gap: 26px; flex: 1; }
.main-nav a {
  font-weight: 600;
  font-size: 15px;
  color: var(--color-navy);
  opacity: .8;
}
.main-nav a:hover { opacity: 1; color: var(--color-red); }

.header-search {
  flex: 1;
  min-width: 0;
  max-width: 420px;
  display: flex;
  align-items: center;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  padding: 8px 8px 8px 18px;
}
.header-search input {
  border: 0;
  background: transparent;
  outline: none;
  flex: 1;
  font-size: 14px;
  font-family: var(--font);
}
.header-search button {
  border: 0;
  background: var(--color-navy);
  color: #fff;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
}

.header-actions { display: flex; align-items: center; gap: 12px; flex-shrink: 0; }

/* ---------- Banner / Hero ---------- */

.hero {
  background: linear-gradient(120deg, var(--color-navy) 0%, var(--color-navy-light) 55%, #2c1a4a 100%);
  color: #fff;
  position: relative;
  overflow: hidden;
}
.hero .container {
  padding-top: 64px;
  padding-bottom: 64px;
  display: grid;
  grid-template-columns: 1.1fr .9fr;
  gap: 32px;
  align-items: center;
}
.hero .container > div { min-width: 0; }
.hero h1 {
  font-size: 42px;
  line-height: 1.15;
  margin: 0 0 18px;
  font-weight: 800;
}
.hero h1 span { color: var(--color-red); }
.hero p {
  font-size: 17px;
  color: #cfd6ea;
  max-width: 480px;
  margin: 0 0 28px;
}
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }
.hero-art {
  background: rgba(255,255,255,.06);
  border: 1px solid rgba(255,255,255,.12);
  border-radius: var(--radius-lg);
  padding: 28px;
  backdrop-filter: blur(6px);
}
.hero-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin-top: 30px; }
.hero-stats div { text-align: center; }
.hero-stats strong { display: block; font-size: 26px; color: #fff; }
.hero-stats span { font-size: 13px; color: #b9c1de; }

/* ---------- Layout principal: sidebar categorias + grid cursos ---------- */

.page-main { padding: 44px 0 70px; overflow-x: hidden; }
.layout {
  display: grid;
  grid-template-columns: 268px minmax(0, 1fr);
  gap: 32px;
  align-items: start;
}
.layout > div { min-width: 0; }

.sidebar {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 22px;
  position: sticky;
  top: 100px;
}
.sidebar h3 {
  font-size: 15px;
  text-transform: uppercase;
  letter-spacing: .04em;
  color: var(--color-text-muted);
  margin: 0 0 14px;
}
.category-list li { margin-bottom: 4px; }
.category-list a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 14.5px;
  color: var(--color-text);
}
.category-list a:hover { background: var(--color-bg); }
.category-list a.active { background: var(--color-red); color: #fff; }
.category-list .count {
  font-size: 12px;
  font-weight: 700;
  color: var(--color-text-muted);
  background: var(--color-bg);
  border-radius: 999px;
  padding: 2px 9px;
}
.category-list a.active .count { background: rgba(255,255,255,.25); color: #fff; }

.content-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 22px;
  gap: 16px;
  flex-wrap: wrap;
}
.content-toolbar h2 { margin: 0; font-size: 24px; }
.content-toolbar .muted { color: var(--color-text-muted); font-size: 14px; }

.course-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
}

/* ---------- Card de curso ---------- */

.course-card {
  min-width: 0;
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform .18s ease, box-shadow .18s ease;
  box-shadow: var(--shadow-card);
}
.course-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-card-hover); }

.course-card-media { position: relative; aspect-ratio: 16 / 10; background: var(--color-bg); }
.course-card-media img { width: 100%; height: 100%; object-fit: cover; }
.course-card-badge {
  position: absolute;
  top: 12px;
  left: 12px;
  background: var(--color-red);
  color: #fff;
  font-size: 11.5px;
  font-weight: 700;
  padding: 5px 11px;
  border-radius: 999px;
  text-transform: uppercase;
}

.course-card-body { padding: 18px 20px 20px; display: flex; flex-direction: column; gap: 10px; flex: 1; }
.course-card-cat { font-size: 12.5px; font-weight: 700; color: var(--color-red); text-transform: uppercase; letter-spacing: .03em; }
.course-card-title { font-size: 17px; font-weight: 700; line-height: 1.35; color: var(--color-navy); }
.course-card-title:hover { color: var(--color-red); }

.course-card-meta {
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 13px;
  color: var(--color-text-muted);
  margin-top: auto;
}
.course-card-meta .rating { color: var(--color-gold); font-weight: 700; }

.course-card-footer {
  border-top: 1px solid var(--color-border);
  padding: 14px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.course-card-footer .price { font-weight: 800; color: var(--color-navy); }
.course-card-footer .price.free { color: #1a9e5c; }

/* ---------- Paginacao ---------- */

.pagination { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px; margin-top: 36px; }
.pagination a, .pagination span {
  min-width: 40px;
  height: 40px;
  padding: 0 6px;
  border-radius: 999px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 14px;
  border: 1px solid var(--color-border);
  background: #fff;
}
.pagination a:hover { border-color: var(--color-red); color: var(--color-red); }
.pagination .active { background: var(--color-navy); border-color: var(--color-navy); color: #fff; }
.pagination .ellipsis { border: none; background: transparent; min-width: 20px; }

/* ---------- Estado vazio ---------- */

.empty-state {
  background: var(--color-card);
  border: 1px dashed var(--color-border);
  border-radius: var(--radius-lg);
  padding: 60px 20px;
  text-align: center;
  color: var(--color-text-muted);
}

/* ---------- Pagina de curso ---------- */

.course-hero {
  background: var(--color-navy);
  color: #fff;
  padding: 44px 0;
}
.course-hero .breadcrumb { font-size: 13px; color: #b9c1de; margin-bottom: 14px; }
.course-hero .breadcrumb a { color: #fff; }
.course-hero h1 { font-size: 32px; margin: 0 0 14px; max-width: 760px; }
.course-hero-meta { display: flex; gap: 22px; flex-wrap: wrap; font-size: 14px; color: #dfe4f3; }

.course-detail {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 340px;
  gap: 32px;
  padding: 40px 0 70px;
  align-items: start;
}
.course-detail-main {
  min-width: 0;
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 30px;
}
.course-detail-main h2 { font-size: 20px; margin-top: 0; }
.course-detail-main .description { color: var(--color-text); line-height: 1.7; }

.teacher-box {
  display: flex;
  gap: 14px;
  align-items: center;
  border-top: 1px solid var(--color-border);
  margin-top: 24px;
  padding-top: 24px;
}
.teacher-box img { width: 56px; height: 56px; border-radius: 50%; object-fit: cover; }
.teacher-box strong { display: block; font-size: 15px; }
.teacher-box span { font-size: 13px; color: var(--color-text-muted); }

.buy-box {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 26px;
  position: sticky;
  top: 100px;
}
.buy-box img { border-radius: var(--radius-md); margin-bottom: 18px; aspect-ratio: 16/10; object-fit: cover; width: 100%; }
.buy-box ul { margin: 18px 0; display: flex; flex-direction: column; gap: 10px; font-size: 14px; }
.buy-box ul li { display: flex; justify-content: space-between; color: var(--color-text-muted); }
.buy-box ul li strong { color: var(--color-text); }
.buy-box .alert { margin-top: 14px; }

/* ---------- Formularios (login / passaporte) ---------- */

.auth-wrap {
  min-height: calc(100vh - 84px - 320px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 60px 20px;
}
.auth-card {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  padding: 40px;
  width: 100%;
  max-width: 440px;
}
.auth-card h1 { font-size: 24px; margin: 0 0 6px; }
.auth-card .subtitle { color: var(--color-text-muted); font-size: 14px; margin-bottom: 26px; }

.field { margin-bottom: 16px; }
.field label { display: block; font-size: 13.5px; font-weight: 600; margin-bottom: 6px; }
.field input, .field select {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-family: var(--font);
  background: #fff;
}
.field input:focus, .field select:focus { outline: none; border-color: var(--color-red); }
.field input[readonly] { background: var(--color-bg); color: var(--color-text-muted); }
.field-code input { letter-spacing: .12em; text-align: center; font-weight: 700; text-transform: lowercase; }

.auth-footer-link { text-align: center; margin-top: 18px; font-size: 14px; color: var(--color-text-muted); }
.auth-footer-link a { color: var(--color-red); font-weight: 700; }

/* ---------- Alertas / flash ---------- */

.alert {
  padding: 13px 16px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  margin-bottom: 18px;
}
.alert-success { background: #e7f8ef; color: #147a4b; border: 1px solid #b7ebcf; }
.alert-error { background: #fdeaea; color: #b02323; border: 1px solid #f6c1c1; }

/* ---------- Conta / meus cursos ---------- */

.account-header { padding: 40px 0 10px; }
.account-header h1 { font-size: 28px; margin: 0 0 6px; }
.account-tabs { display: flex; gap: 22px; border-bottom: 1px solid var(--color-border); margin-top: 22px; }
.account-tabs a { padding: 12px 4px; font-weight: 700; color: var(--color-text-muted); border-bottom: 3px solid transparent; }
.account-tabs a.active { color: var(--color-navy); border-color: var(--color-red); }

.enrollment-list { padding: 30px 0 70px; display: flex; flex-direction: column; gap: 16px; }
.enrollment-card {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 18px 22px;
  display: flex;
  align-items: center;
  gap: 20px;
}
.enrollment-card img { width: 96px; height: 66px; border-radius: var(--radius-sm); object-fit: cover; flex-shrink: 0; }
.enrollment-card .info { flex: 1; min-width: 0; }
.enrollment-card .info h3 { margin: 0 0 4px; font-size: 16px; }
.enrollment-card .info .cat { font-size: 12.5px; color: var(--color-red); font-weight: 700; text-transform: uppercase; }
.progress-bar { background: var(--color-bg); border-radius: 999px; height: 8px; margin-top: 8px; overflow: hidden; }
.progress-bar span { display: block; height: 100%; background: var(--color-red); }

.table-responsive { width: 100%; overflow-x: auto; -webkit-overflow-scrolling: touch; border-radius: var(--radius-lg); box-shadow: var(--shadow-card); }
.passport-table { width: 100%; min-width: 520px; border-collapse: collapse; background: #fff; }
.passport-table th, .passport-table td { padding: 14px 18px; text-align: left; font-size: 14px; border-bottom: 1px solid var(--color-border); }
.passport-table th { background: var(--color-bg); font-size: 12.5px; text-transform: uppercase; color: var(--color-text-muted); }
.badge { padding: 4px 11px; border-radius: 999px; font-size: 12px; font-weight: 700; }
.badge-activated { background: #fff4dd; color: #a8710a; }
.badge-used { background: #e7f8ef; color: #147a4b; }
.badge-pending { background: #eef0f6; color: var(--color-text-muted); }

/* ---------- Footer ---------- */

.site-footer { background: var(--color-navy); color: #cfd6ea; margin-top: 40px; }
.site-footer .container { padding: 54px 20px 30px; display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 30px; }
.site-footer h4 { color: #fff; font-size: 15px; margin: 0 0 16px; }
.site-footer p, .site-footer a { color: #b9c1de; font-size: 14px; }
.site-footer ul li { margin-bottom: 10px; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.1); padding: 18px 20px; text-align: center; font-size: 13px; color: #8b93b3; }

/* ---------- Responsivo ---------- */

@media (max-width: 960px) {
  .layout { grid-template-columns: minmax(0, 1fr); }
  .sidebar { position: static; }
  .course-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .hero .container { grid-template-columns: minmax(0, 1fr); }
  .course-detail { grid-template-columns: minmax(0, 1fr); }
  .buy-box { position: static; }
  .main-nav { display: none; }
  .site-footer .container { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 700px) {
  .topbar .container { justify-content: center; }
  .topbar span { display: none; }
  .site-header .container { gap: 14px; height: auto; padding: 14px 20px; flex-wrap: wrap; }
  .header-search { order: 3; flex-basis: 100%; max-width: none; }
  .header-actions .btn-outline .account-name { display: none; }
}

@media (max-width: 600px) {
  .course-grid { grid-template-columns: minmax(0, 1fr); }
  .site-footer .container { grid-template-columns: 1fr; }
  .hero h1 { font-size: 30px; }
  .course-detail-main, .buy-box { padding: 20px; }
}