/* ============================================================
   index.css – AI Skill Assessment System
   Styles for index.html (home / top page)
   ============================================================ */

/* ── Test mode banner ──────────────────────────────────────── */

.test-mode-banner {
  background: #fef3c7;
  border-bottom: 2px solid #f59e0b;
  color: #92400e;
  font-size: 13px;
  font-weight: 600;
  text-align: center;
  padding: 8px 16px;
  letter-spacing: 0.01em;
}

/* ── Navbar ────────────────────────────────────────────────── */

.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-height);
  background: #1a1f2e;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 20px;
  box-shadow: 0 1px 0 rgba(255,255,255,.06);
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 8px;
  color: #fff;
  font-size: 15px;
  font-weight: 500;
  letter-spacing: .01em;
}

.nav-icon {
  font-size: 18px;
  line-height: 1;
}

.nav-user {
  display: flex;
  align-items: center;
  gap: 10px;
}

.user-avatar {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-full);
  background: #5b6abf;
  color: #fff;
  font-size: 13px;
  font-weight: 500;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  user-select: none;
}

.user-info {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
}

.user-name {
  color: #fff;
  font-size: 13px;
  font-weight: 500;
  line-height: 1.3;
}

.user-email {
  color: rgba(255,255,255,.6);
  font-size: 11px;
  line-height: 1.3;
}

.btn-logout {
  background: transparent;
  border: 1px solid rgba(255,255,255,.3);
  color: #fff;
  font-size: 12px;
  padding: 5px 13px;
  border-radius: var(--radius-md);
  transition: background var(--transition), border-color var(--transition);
}

.btn-logout:hover {
  background: rgba(255,255,255,.1);
  border-color: rgba(255,255,255,.5);
}

/* ── User dropdown menu ─────────────────────────────────────── */

.user-menu-wrap {
  position: relative;
}

.user-menu-trigger {
  display: flex;
  align-items: center;
  gap: 6px;
  background: transparent;
  border: none;
  cursor: default;
  padding: 4px 6px;
  border-radius: var(--radius-md);
  transition: background var(--transition);
}

.user-menu-trigger.is-admin {
  cursor: pointer;
}

.user-menu-trigger.is-admin:hover {
  background: rgba(255,255,255,.08);
}

.user-menu-caret {
  color: rgba(255,255,255,.75);
  display: none;
  line-height: 1;
  flex-shrink: 0;
}

.user-menu-trigger.is-admin .user-menu-caret {
  display: flex;
  align-items: center;
}

.user-menu-trigger.is-admin:hover .user-menu-caret {
  color: #fff;
}

.user-dropdown {
  display: none;
  position: absolute;
  top: calc(100% + 6px);
  right: 0;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  min-width: 160px;
  z-index: 200;
  overflow: hidden;
}

.user-dropdown.is-open {
  display: block;
}

.user-dropdown-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 11px 16px;
  font-size: 13px;
  color: var(--color-text-primary);
  text-decoration: none;
  transition: background var(--transition);
}

.user-dropdown-item:hover {
  background: var(--color-primary-light);
  color: var(--color-primary);
  text-decoration: none;
}

/* ── Container ─────────────────────────────────────────────── */

.container {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 24px var(--content-pad) 40px;
}

/* ── Hero card ─────────────────────────────────────────────── */

.hero-card {
  background: var(--color-gradient-hero);
  border-radius: var(--radius-lg);
  padding: 28px 24px 24px;
  color: #fff;
  margin-bottom: 16px;
  box-shadow: var(--shadow-lg);
  position: relative;
  overflow: hidden;
}

.hero-card::before {
  content: '';
  position: absolute;
  top: -40px;
  right: -40px;
  width: 160px;
  height: 160px;
  border-radius: 50%;
  background: rgba(255,255,255,.06);
  pointer-events: none;
}

.hero-card::after {
  content: '';
  position: absolute;
  bottom: -30px;
  left: -20px;
  width: 100px;
  height: 100px;
  border-radius: 50%;
  background: rgba(255,255,255,.04);
  pointer-events: none;
}

.hero-eyebrow {
  font-size: 11px;
  font-weight: 400;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: rgba(255,255,255,.7);
  margin-bottom: 8px;
}

.hero-card h1 {
  font-size: 20px;
  font-weight: 600;
  line-height: 1.3;
  margin-bottom: 10px;
}

.hero-card p {
  font-size: 13px;
  color: rgba(255,255,255,.85);
  line-height: 1.75;
  margin-bottom: 16px;
}

.hero-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.chip {
  background: rgba(255,255,255,.18);
  color: #fff;
  font-size: 12px;
  padding: 4px 12px;
  border-radius: var(--radius-full);
  backdrop-filter: blur(4px);
}

/* ── Start button ──────────────────────────────────────────── */

.btn-start {
  display: block;
  width: 100%;
  background: var(--color-primary);
  color: #fff;
  font-size: 15px;
  font-weight: 500;
  padding: 16px 24px;
  border-radius: var(--radius-lg);
  margin-bottom: 16px;
  box-shadow: var(--shadow-md);
  transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
  letter-spacing: .02em;
  text-align: center;
}

.btn-start:hover {
  background: var(--color-primary-hover);
  transform: translateY(-1px);
  box-shadow: 0 6px 18px rgba(79,70,229,.3);
}

.btn-start:active {
  transform: translateY(0);
  box-shadow: var(--shadow-md);
}

/* ── Cards ─────────────────────────────────────────────────── */

.card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  overflow: hidden;
  margin-bottom: 16px;
}

.card-header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 16px 20px 12px;
  border-bottom: 1px solid var(--color-border);
}

.card-header-icon {
  font-size: 16px;
  line-height: 1;
}

.card-header h2 {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-text-primary);
}

/* ── History list ──────────────────────────────────────────── */

.history-list { padding: 0; }

.history-item {
  border-bottom: 1px solid var(--color-border-light);
  transition: background var(--transition);
}

.history-item:last-child { border-bottom: none; }

.history-item:hover  { background: #FAFBFF; }
.history-item:active { background: var(--color-primary-light); }

.history-item-inner {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 20px;
  cursor: pointer;
}

.history-item-info {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.history-item-date {
  font-size: 12px;
  color: var(--color-text-secondary);
  display: flex;
  align-items: center;
  gap: 4px;
}

.history-item-rank {
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text-primary);
}

.history-item-score {
  font-size: 13px;
  font-weight: 400;
  color: var(--color-text-secondary);
  margin-left: 4px;
}

.history-item-arrow {
  color: var(--color-text-muted);
  font-size: 20px;
  line-height: 1;
  flex-shrink: 0;
}

.history-error {
  padding: 16px 20px;
  color: var(--color-text-secondary);
  font-size: 13px;
  display: flex;
  align-items: center;
  gap: 8px;
}

#history-empty {
  padding: 32px 20px;
  text-align: center;
  color: var(--color-text-secondary);
  font-size: 14px;
}

/* ── Pagination ────────────────────────────────────────────── */

.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 12px 20px;
  border-top: 1px solid var(--color-border-light);
}

.page-btn {
  background: transparent;
  border: 1px solid var(--color-border);
  color: var(--color-text-secondary);
  font-size: 13px;
  padding: 6px 14px;
  border-radius: var(--radius-md);
  transition: background var(--transition), color var(--transition);
}

.page-btn:not(:disabled):hover {
  background: var(--color-primary-light);
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.page-btn:disabled {
  opacity: .4;
  cursor: not-allowed;
}

.page-info {
  font-size: 13px;
  color: var(--color-text-secondary);
  white-space: nowrap;
}

/* ── Popup overlay ──────────────────────────────────────────── */

.popup-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, .45);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
}

.popup-content {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  max-width: 380px;
  width: 90%;
  box-shadow: 0 20px 60px rgba(0, 0, 0, .25);
  text-align: center;
}

.popup-content p {
  color: var(--color-text-primary);
  font-size: 14px;
  line-height: 1.7;
  margin-bottom: 20px;
}

.popup-close-btn {
  background: var(--color-primary);
  color: #fff;
  font-size: 14px;
  font-weight: 500;
  padding: 10px 28px;
  border-radius: var(--radius-md);
  transition: background var(--transition);
}

.popup-close-btn:hover { background: var(--color-primary-hover); }

/* ── Responsive ─────────────────────────────────────────────── */

@media (max-width: 600px) {
  .hero-card { padding: 22px 18px 20px; }
  .hero-card h1 { font-size: 18px; }
  .btn-start { font-size: 14px; padding: 14px 20px; }
  .history-item-inner { padding: 12px 14px; }
}

@media (max-width: 400px) {
  .hero-chips { gap: 6px; }
  .chip { font-size: 11px; padding: 3px 10px; }
}