/* ============================================================
   Layout — Navbar
   ============================================================ */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 64px;
  padding: 0 var(--space-6);
  background: rgba(255,255,255,0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
}

.navbar .brand {
  font-size: var(--text-xl);
  font-weight: 700;
  background: linear-gradient(135deg, var(--color-primary), #8B5CF6);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-6);
}

.nav-links a {
  color: var(--color-text-secondary);
  font-size: var(--text-sm);
  font-weight: 500;
  padding: var(--space-2) 0;
  border-bottom: 2px solid transparent;
  transition: color var(--transition-fast), border-color var(--transition-fast);
}

.nav-links a:hover {
  color: var(--color-text-primary);
  border-bottom-color: var(--color-primary);
}

.nav-links a.active {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
  font-weight: 600;
}

.nav-dropdown-trigger.active {
  color: var(--color-primary);
  font-weight: 600;
  border-bottom-color: var(--color-primary);
}

/* Points badge */
.points-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  background: linear-gradient(135deg, var(--color-primary-subtle), #F5F3FF);
  color: var(--color-primary);
  font-weight: 700;
  font-size: var(--text-sm);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  border: 1px solid rgba(99,102,241,0.2);
}

/* User avatar placeholder */
.user-avatar {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-full);
  background: var(--color-primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-xs);
  font-weight: 700;
  text-transform: uppercase;
}

.logout-link {
  color: var(--color-text-tertiary) !important;
  font-size: var(--text-xs) !important;
  border-bottom: none !important;
}
.logout-link:hover { color: var(--color-error) !important; }
/* ============================================================
   Layout — Main & Footer
   ============================================================ */
main {
  max-width: 1100px;
  margin: 0 auto;
  padding: var(--space-8) var(--space-4);
}

.site-footer {
  text-align: center;
  padding: var(--space-8) var(--space-4);
  color: var(--color-text-tertiary);
  font-size: var(--text-xs);
  border-top: 1px solid var(--color-border);
  margin-top: var(--space-16);
}
/* ============================================================
   Components — Button
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  font-weight: 600;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
  font-family: var(--font-sans);
  font-size: var(--text-sm);
  padding: var(--space-2) var(--space-5);
  user-select: none;
}

.btn:active { transform: scale(0.97); }

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

.btn-danger {
  background: var(--color-error);
  color: #fff;
  border-color: var(--color-error);
}
.btn-danger:hover {
  background: #DC2626;
  border-color: #DC2626;
  color: #fff;
}

.btn-secondary {
  background: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}
.btn-secondary:hover {
  background: var(--color-primary-subtle);
  color: var(--color-primary-hover);
}

.btn-ghost {
  background: transparent;
  color: var(--color-text-secondary);
  border-color: transparent;
}
.btn-ghost:hover {
  background: var(--color-surface-alt);
  color: var(--color-text-primary);
}

.btn-lg {
  font-size: var(--text-base);
  padding: var(--space-3) var(--space-8);
}

.btn-sm {
  font-size: var(--text-xs);
  padding: var(--space-1) var(--space-3);
}

.btn-block { width: 100%; }
/* ============================================================
   Components — Card
   ============================================================ */
.card {
  background: var(--color-surface);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  padding: var(--space-6);
  transition: box-shadow var(--transition-base);
}
.card:hover {
  box-shadow: var(--shadow-md);
}

.card-highlight {
  border: 2px solid var(--color-primary);
  background: var(--color-primary-subtle);
}
/* ============================================================
   Components — Form Inputs
   ============================================================ */
input[type="email"],
input[type="password"],
input[type="text"],
input[type="number"],
textarea,
select {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: var(--text-sm);
  font-family: var(--font-sans);
  background: var(--color-surface);
  color: var(--color-text-primary);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

input:focus,
textarea:focus,
select:focus {
  border-color: var(--color-border-focus);
  box-shadow: var(--shadow-glow);
  outline: none;
}

textarea {
  resize: vertical;
  min-height: 100px;
}

label {
  display: block;
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-1);
}
/* ============================================================
   Components — Badge
   ============================================================ */
.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 600;
  background: var(--color-primary-subtle);
  color: var(--color-primary);
}

.badge-accent {
  background: #FEF3C7;
  color: #D97706;
}
/* ============================================================
   Components — Spinner
   ============================================================ */
.spinner {
  width: 36px;
  height: 36px;
  border: 3px solid var(--color-border);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin: 0 auto var(--space-3);
}

@keyframes spin { to { transform: rotate(360deg); } }
/* ============================================================
   Page — Auth (Login / Register)
   ============================================================ */
.auth-page {
  min-height: calc(100vh - 64px);
  display: flex;
  align-items: center;
  justify-content: center;
}

.auth-card {
  width: 100%;
  max-width: 420px;
  padding: var(--space-10);
}

.auth-card h2 {
  font-size: var(--text-2xl);
  font-weight: 700;
  margin-bottom: var(--space-2);
  color: var(--color-text-primary);
}

.auth-card .subtitle {
  font-size: var(--text-sm);
  color: var(--color-text-tertiary);
  margin-bottom: var(--space-8);
}

.auth-card .form-group {
  margin-bottom: var(--space-5);
}

.auth-card label {
  margin-bottom: var(--space-1);
}

.auth-card button[type="submit"] {
  margin-top: var(--space-4);
}

.auth-card .switch-link {
  text-align: center;
  margin-top: var(--space-6);
  font-size: var(--text-sm);
  color: var(--color-text-tertiary);
}

.email-row {
  display: flex;
  gap: var(--space-2);
}

.email-row .email-input {
  flex: 1;
}

.send-code-btn {
  white-space: nowrap;
  font-size: var(--text-xs);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-sm);
  flex-shrink: 0;
  transition: all var(--transition-fast);
}

.code-input {
  text-align: center;
  font-size: var(--text-xl);
  font-weight: 700;
  letter-spacing: 0.3em;
  font-family: var(--font-number);
}

.code-input::placeholder {
  font-size: var(--text-sm);
  font-weight: 400;
  letter-spacing: normal;
}