/* ============================================================================
   Components , buttons, cards, forms, nav, badges, progress, quiz panel
   ============================================================================ */

/* ---- Buttons (§5.1) ---- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 44px;
  padding: 12px 24px;
  border-radius: var(--radius-md);
  font-family: var(--font-body);
  font-weight: 700;
  font-size: var(--fs-body);
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition-fast);
  text-decoration: none;
}

.btn-primary {
  background: var(--color-primary-crimson);
  color: var(--color-white);
}
.btn-primary:hover {
  background: var(--color-primary-crimson-dark);
  color: var(--color-white);
  text-decoration: none;
  box-shadow: var(--shadow-card-hover);
}

.btn-secondary {
  background: transparent;
  border-color: var(--color-navy);
  color: var(--color-navy);
}
.btn-secondary:hover {
  background: var(--color-navy);
  color: var(--color-white);
  text-decoration: none;
}
html[data-theme="dark"] .btn-secondary {
  border-color: var(--color-gold-light);
  color: var(--color-gold-light);
}
html[data-theme="dark"] .btn-secondary:hover {
  background: var(--color-gold-light);
  color: var(--color-navy);
}

.btn-tertiary {
  background: transparent;
  border: none;
  color: var(--color-primary-crimson);
  padding: 8px 4px;
  min-height: auto;
}
html[data-theme="dark"] .btn-tertiary { color: var(--color-primary-crimson-light); }
.btn-tertiary:hover { text-decoration: underline; }

.btn-block { width: 100%; }
.btn-sm { padding: 8px 16px; min-height: 36px; font-size: var(--fs-small); }
.btn-icon { padding: 8px; min-width: 44px; }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }

@media (max-width: 599px) {
  /* Stacked full-width action groups on phones instead of cramped rows. */
  .btn-group-mobile-stack { display: flex; flex-direction: column; gap: 10px; }
  .btn-group-mobile-stack .btn { width: 100%; }
}

/* ---- Theme toggle (dark/light, ask #5) ---- */
.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid var(--border-color);
  background: var(--surface-card);
  color: var(--text-body);
  cursor: pointer;
  transition: background var(--transition-fast), border-color var(--transition-fast);
  flex-shrink: 0;
}
.theme-toggle:hover { border-color: var(--color-gold); }
.theme-toggle svg { width: 20px; height: 20px; }
.theme-toggle .icon-sun { display: none; }
html[data-theme="dark"] .theme-toggle .icon-sun { display: block; }
html[data-theme="dark"] .theme-toggle .icon-moon { display: none; }

/* ---- Header / Nav (§5.4) ---- */
.site-header {
  background: var(--surface-header);
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 100;
  transition: background-color var(--transition-fast), border-color var(--transition-fast);
}
.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
  gap: var(--sp-2);
}
.site-header__logo { display: flex; align-items: center; gap: 10px; }
.site-header__logo img { height: 40px; width: auto; }
/* The source logo file is a flattened opaque-white-background raster
   (see assets/images/README.txt) , rather than inverting it (which would
   turn its white canvas into an ugly solid black block), give it a
   rounded light backdrop in dark mode so it stays crisp and on-brand
   against the dark header instead of showing a harsh white square. */
html[data-theme="dark"] .site-header__logo img {
  background: var(--color-off-white);
  border-radius: var(--radius-sm);
  padding: 4px 8px;
}
.site-header__wordmark { font-family: var(--font-heading); font-weight: 700; font-size: 20px; color: var(--text-heading); }

.site-nav { display: flex; align-items: center; gap: var(--sp-3); }
.site-nav a {
  color: var(--text-body);
  font-weight: 600;
  font-size: var(--fs-body);
}
.site-nav a:hover { color: var(--color-primary-crimson); text-decoration: none; }
.site-nav a.active { color: var(--color-primary-crimson); }

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

.nav-toggle { display: none; background: none; border: none; cursor: pointer; padding: 8px; }
.nav-toggle svg { width: 28px; height: 28px; color: var(--text-heading); }

@media (max-width: 1023px) {
  .site-header .container { height: 68px; }
  .site-nav { display: none; }
  .nav-toggle { display: inline-flex; }
  .site-nav.is-open {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    position: absolute;
    top: 68px; left: 0; right: 0;
    background: var(--surface-header);
    padding: var(--sp-2) var(--sp-2) var(--sp-3);
    border-bottom: 1px solid var(--border-color);
    gap: 4px;
    box-shadow: var(--shadow-card-hover);
    max-height: calc(100vh - 68px);
    overflow-y: auto;
  }
  .site-nav.is-open a { padding: 12px 8px; border-radius: var(--radius-sm); }
  .site-nav.is-open a:hover { background: var(--surface-alt); }
}

@media (max-width: 380px) {
  .site-header__logo img { height: 32px; }
}

/* ---- Footer (§5.4) , always the fixed navy brand surface in both themes ---- */
.site-footer { background: var(--color-navy); color: var(--color-gray-300); padding: var(--sp-8) 0 var(--sp-4); }
.site-footer h4 { color: var(--color-white); font-family: var(--font-body); font-size: var(--fs-small); text-transform: uppercase; letter-spacing: 0.06em; margin-bottom: var(--sp-2); }
.site-footer a { color: var(--color-gray-300); }
.site-footer a:hover { color: var(--color-white); }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: var(--sp-4); }
.footer-grid ul { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 10px; }
.footer-bottom { border-top: 1px solid var(--color-navy-light); margin-top: var(--sp-6); padding-top: var(--sp-3); font-size: var(--fs-small); display: flex; justify-content: space-between; flex-wrap: wrap; gap: var(--sp-2); }
@media (max-width: 767px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 480px) {
  .footer-grid { grid-template-columns: 1fr; gap: var(--sp-3); text-align: left; }
  .footer-bottom { flex-direction: column; align-items: flex-start; gap: 4px; }
}

/* ---- WhatsApp bubble (§5.4) ---- */
.whatsapp-bubble {
  position: fixed;
  bottom: 24px; right: 24px;
  width: 60px; height: 60px;
  border-radius: 50%;
  background: #25D366;
  display: flex; align-items: center; justify-content: center;
  box-shadow: var(--shadow-card-hover);
  z-index: 200;
  transition: transform var(--transition-fast);
}
.whatsapp-bubble:hover { transform: scale(1.08); }
.whatsapp-bubble svg { width: 30px; height: 30px; fill: white; }
@media (max-width: 599px) {
  /* Keeps the bubble from covering bottom-sheet content / thumb-reach zone on small phones */
  .whatsapp-bubble { bottom: 16px; right: 16px; width: 52px; height: 52px; }
  .whatsapp-bubble svg { width: 26px; height: 26px; }
}

/* ---- Program Cards (§5.2) ---- */
.catalog-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--sp-3);
}
@media (max-width: 1023px) { .catalog-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 599px) { .catalog-grid { grid-template-columns: 1fr; gap: var(--sp-2); } }

.program-card {
  background: var(--surface-card);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  border-top: 3px solid var(--color-gold);
  transition: box-shadow var(--transition-fast), transform var(--transition-fast), background-color var(--transition-fast);
  display: flex;
  flex-direction: column;
}
.program-card:hover { box-shadow: var(--shadow-card-hover); transform: translateY(-2px); }
.program-card__thumb {
  aspect-ratio: 16/9;
  background: linear-gradient(135deg, var(--color-navy), var(--color-navy-light));
  display: flex; align-items: center; justify-content: center;
  color: var(--color-gold-light);
  font-family: var(--font-heading);
  font-size: 15px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-align: center;
  padding: var(--sp-2);
}
.program-card__body { padding: var(--sp-3); display: flex; flex-direction: column; gap: 10px; flex: 1; }
.program-card__level {
  display: inline-block;
  align-self: flex-start;
  font-size: var(--fs-tiny);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-gold);
  background: rgba(149, 127, 103, 0.12);
  padding: 4px 10px;
  border-radius: 100px;
}
.program-card__title { font-size: var(--fs-h4); margin: 0; }
.program-card__desc { color: var(--text-muted); font-size: var(--fs-small); flex: 1; margin: 0; }

/* ---- Forms (§5.3) ---- */
.form-group { margin-bottom: var(--sp-3); }
.form-label {
  display: block;
  font-weight: 600;
  font-size: var(--fs-small);
  color: var(--text-heading);
  margin-bottom: 6px;
}
.form-control {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  font-size: var(--fs-body);
  font-family: var(--font-body);
  background: var(--surface-input);
  color: var(--text-body);
  transition: border-color var(--transition-fast), background-color var(--transition-fast);
  /* 16px minimum prevents iOS Safari from auto-zooming the viewport on focus */
  font-size: max(16px, var(--fs-body));
}
.form-control:focus {
  outline: none;
  border-color: var(--color-primary-crimson);
  box-shadow: 0 0 0 3px rgba(139, 14, 18, 0.12);
}
.form-control::placeholder { color: var(--text-muted); }
select.form-control { cursor: pointer; }
.form-hint { font-size: var(--fs-tiny); color: var(--text-muted); margin-top: 4px; }
.form-error { font-size: var(--fs-small); color: var(--color-error); margin-top: 4px; }
.form-error-summary {
  background: rgba(192, 57, 43, 0.08);
  border: 1px solid var(--color-error);
  color: var(--color-error);
  border-radius: var(--radius-md);
  padding: var(--sp-2);
  margin-bottom: var(--sp-3);
  font-size: var(--fs-small);
}
.form-success-summary {
  background: rgba(46, 125, 79, 0.08);
  border: 1px solid var(--color-success);
  color: var(--color-success);
  border-radius: var(--radius-md);
  padding: var(--sp-2);
  margin-bottom: var(--sp-3);
  font-size: var(--fs-small);
}

/* ---- Status Badges (§5.5) ---- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  border-radius: 100px;
  font-size: var(--fs-tiny);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.badge-enrolled { background: rgba(44, 92, 138, 0.12); color: var(--color-info); }
.badge-locked { background: rgba(192, 57, 43, 0.12); color: var(--color-error); }
.badge-active { background: rgba(46, 125, 79, 0.12); color: var(--color-success); }
.badge-warning { background: rgba(184, 134, 11, 0.14); color: var(--color-warning); }
.badge-dropped { background: var(--border-soft); color: var(--text-muted); }
.badge-cert { background: rgba(149, 127, 103, 0.16); color: var(--color-gold); }

.lesson-link.current-lesson {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 4px 8px;
  border-radius: 8px;
  background: rgba(44, 92, 138, 0.08);
  border: 1px solid rgba(44, 92, 138, 0.18);
  color: var(--color-info);
}

/* ---- Progress Bar (§5.6) ---- */
.progress-bar { background: var(--border-soft); border-radius: 100px; height: 8px; overflow: hidden; }
.progress-bar__fill { background: var(--color-primary-crimson); height: 100%; border-radius: 100px; transition: width 300ms ease; }
.progress-label { display: flex; justify-content: space-between; font-size: var(--fs-small); color: var(--text-muted); margin-bottom: 6px; }

/* ---- Quiz Result Panel (§5.7) ---- */
.quiz-result { border-radius: var(--radius-md); overflow: hidden; border: 1px solid var(--border-color); }
.quiz-result__header { padding: var(--sp-3); text-align: center; }
.quiz-result__header.pass { background: rgba(46, 125, 79, 0.1); }
.quiz-result__header.fail { background: rgba(192, 57, 43, 0.1); }
.quiz-result__score { font-family: var(--font-heading); font-size: 40px; font-weight: 700; }
.quiz-result__score.pass { color: var(--color-success); }
.quiz-result__score.fail { color: var(--color-error); }
.quiz-question-review { padding: var(--sp-2) var(--sp-3); border-top: 1px solid var(--border-color); }
.quiz-question-review.incorrect { background: rgba(192, 57, 43, 0.05); }
.quiz-question-review .answer-correct { color: var(--color-success); font-weight: 600; }
.quiz-question-review .answer-incorrect { color: var(--color-error); font-weight: 600; text-decoration: line-through; }

/* ---- Toasts ---- */
.toast {
  position: fixed;
  bottom: 24px; left: 50%;
  transform: translateX(-50%);
  background: var(--color-navy);
  color: white;
  padding: 14px 24px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card-hover);
  z-index: 300;
  font-size: var(--fs-small);
  opacity: 0;
  transition: opacity var(--transition-fast);
  max-width: calc(100vw - 32px);
  text-align: center;
}
.toast.show { opacity: 1; }

/* ---- Cards (generic content card) ---- */
.card {
  background: var(--surface-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: var(--sp-3);
  transition: background-color var(--transition-fast), border-color var(--transition-fast);
}

/* ---- Modal (drop-program confirmation etc, §6.6) ---- */
.modal-overlay {
  position: fixed; inset: 0;
  background: var(--surface-overlay);
  display: flex; align-items: center; justify-content: center;
  z-index: 400;
  padding: var(--sp-2);
}
.modal-box {
  background: var(--surface-card);
  color: var(--text-body);
  border-radius: var(--radius-md);
  padding: var(--sp-4);
  max-width: 480px;
  width: 100%;
  box-shadow: var(--shadow-card-hover);
  max-height: 90vh;
  overflow-y: auto;
}
.modal-actions { display: flex; gap: var(--sp-2); margin-top: var(--sp-3); flex-wrap: wrap; }
@media (max-width: 480px) {
  .modal-box { padding: var(--sp-3); }
  .modal-actions { flex-direction: column; }
  .modal-actions .btn, .modal-actions form { width: 100%; }
}

/* ---- Cookie consent banner (§6.11) ---- */
.cookie-banner {
  position: fixed;
  bottom: 0; left: 0; right: 0;
  background: var(--color-navy);
  color: var(--color-gray-300);
  padding: var(--sp-3);
  z-index: 500;
  display: none;
}
.cookie-banner.show { display: block; }
.cookie-banner__inner { max-width: var(--container-max); margin: 0 auto; display: flex; align-items: center; justify-content: space-between; gap: var(--sp-3); flex-wrap: wrap; }
.cookie-banner p { margin: 0; font-size: var(--fs-small); max-width: 640px; }
.cookie-banner__actions { display: flex; gap: 10px; flex-shrink: 0; }
@media (max-width: 599px) {
  .cookie-banner__actions { width: 100%; }
  .cookie-banner__actions .btn { flex: 1; }
}

/* ---- Responsive tables (admin panel, quiz breakdowns) ---- */
table.data-table { width: 100%; border-collapse: collapse; }
table.data-table th, table.data-table td { padding: 10px 12px; text-align: left; border-bottom: 1px solid var(--border-soft); font-size: var(--fs-small); }
table.data-table thead th { border-bottom: 1px solid var(--border-color); color: var(--text-muted); text-transform: uppercase; font-size: var(--fs-tiny); letter-spacing: 0.05em; }
table.data-table tbody tr:hover { background: var(--surface-alt); }

/* ---- Admin chrome: persistent left sidebar (desktop) that collapses
   into a hamburger-triggered slide-in drawer (mobile/tablet) , ask #2.
   Markup: .admin-shell > .admin-sidebar + .admin-main > .admin-topbar. ---- */
.admin-shell { min-height: 100vh; background: var(--surface-alt); display: flex; }

.admin-sidebar {
  width: 250px;
  flex-shrink: 0;
  background: var(--color-navy);
  color: var(--color-gray-300);
  padding: var(--sp-3) var(--sp-2);
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
  transition: transform var(--transition-fast);
}
.admin-sidebar__logo { display: flex; align-items: center; gap: 8px; font-family: var(--font-heading); font-weight: 700; color: white; font-size: 18px; padding: 0 10px var(--sp-3); }
.admin-sidebar__logo img { border-radius: 50%; }
.admin-nav { display: flex; flex-direction: column; gap: 4px; }
.admin-nav a { padding: 11px 14px; border-radius: var(--radius-md); font-weight: 600; font-size: var(--fs-small); color: var(--color-gray-300); display: flex; align-items: center; gap: 10px; }
.admin-nav a:hover, .admin-nav a.active { background: var(--color-navy-light); color: white; text-decoration: none; }
.admin-sidebar__divider { border: none; border-top: 1px solid var(--color-navy-light); margin: var(--sp-2) 10px; }

.admin-main { flex: 1; min-width: 0; }
.admin-topbar { background: var(--surface-header); border-bottom: 1px solid var(--border-color); position: sticky; top: 0; z-index: 100; }
.admin-topbar .container { display: flex; align-items: center; justify-content: space-between; height: 68px; flex-wrap: wrap; gap: 10px; max-width: none; padding: 0 var(--sp-3); }
.admin-topbar__title { font-family: var(--font-heading); font-weight: 700; color: var(--text-heading); font-size: 18px; display: flex; align-items: center; gap: 10px; }

.admin-sidebar-toggle { display: none; background: none; border: none; cursor: pointer; padding: 8px; flex-shrink: 0; }
.admin-sidebar-toggle svg { width: 26px; height: 26px; color: var(--text-heading); }
.admin-sidebar-backdrop { display: none; }

/* Legacy top-tab nav kept in the stylesheet for backward compatibility;
   admin views now render .admin-sidebar instead (ask #2). */
.admin-tabs { display: flex; gap: 4px; flex-wrap: wrap; padding: 12px 0; }
.admin-tabs a { padding: 8px 14px; border-radius: 100px; font-size: var(--fs-small); font-weight: 600; color: var(--text-body); background: var(--surface-card); border: 1px solid var(--border-color); }
.admin-tabs a.active, .admin-tabs a:hover { background: var(--color-primary-crimson); color: white; border-color: var(--color-primary-crimson); text-decoration: none; }

@media (max-width: 900px) {
  .admin-sidebar {
    position: fixed;
    top: 0; left: 0; bottom: 0;
    z-index: 300;
    transform: translateX(-100%);
    box-shadow: var(--shadow-card-hover);
    width: 84vw;
    max-width: 300px;
  }
  .admin-sidebar.is-open { transform: translateX(0); }
  .admin-sidebar-toggle { display: inline-flex; }
  .admin-sidebar-backdrop {
    display: block;
    position: fixed; inset: 0;
    background: var(--surface-overlay);
    z-index: 290;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-fast);
  }
  .admin-sidebar-backdrop.is-open { opacity: 1; pointer-events: auto; }
  .admin-topbar .container { height: 60px; padding: 0 var(--sp-2); }
  .admin-main > main.container { padding-left: var(--sp-2); padding-right: var(--sp-2); }
}
@media (max-width: 599px) {
  .admin-topbar .container { height: 56px; }
  .admin-topbar__desktop-only { display: none; }
}

/* ---- Catalog filter bar (§6.2) ----
   Scrolls with the page on all screen sizes. */
.catalog-filter-bar {
  position: static;
  top: auto;
  z-index: auto;
}

/* ---- Pricing tiers (§6.4) , 3-up desktop, 1-up tablet+phone so each
   tier card gets full-width room for its feature list instead of
   squeezing three columns into a tablet viewport. ---- */
@media (max-width: 900px) {
  .pricing-grid { grid-template-columns: 1fr !important; max-width: 480px; margin: 0 auto; }
}
@media (max-width: 599px) {
  .catalog-filter-form { flex-direction: column; align-items: stretch !important; }
  .catalog-filter-form > div { min-width: 0 !important; width: 100%; }
  .catalog-filter-form .btn { width: 100%; }
}