/* ──────────────────────────────────────────────
   ReminderSMS — Premium Dark Theme
   ────────────────────────────────────────────── */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

:root {
  --bg-dark: #0f1117;
  --bg-surface: #181b23;
  --bg-card: #1e2130;
  --bg-card-hover: #252940;
  --border-subtle: rgba(255,255,255,0.06);
  --border-glow: rgba(99,102,241,0.25);
  --text-primary: #f1f3f9;
  --text-secondary: #9ca3b4;
  --text-muted: #636b80;
  --accent: #6366f1;
  --accent-light: #818cf8;
  --accent-glow: rgba(99,102,241,0.15);
  --success: #22c55e;
  --success-bg: rgba(34,197,94,0.12);
  --warning: #f59e0b;
  --warning-bg: rgba(245,158,11,0.12);
  --danger: #ef4444;
  --danger-bg: rgba(239,68,68,0.12);
  --info: #06b6d4;
  --gradient-hero: linear-gradient(135deg, #0f1117 0%, #1a1d2e 50%, #1e1b3a 100%);
  --gradient-accent: linear-gradient(135deg, #6366f1, #8b5cf6);
  --gradient-card: linear-gradient(145deg, #1e2130, #252940);
  --glass: rgba(30,33,48,0.75);
  --glass-border: rgba(255,255,255,0.08);
  --radius: 16px;
  --radius-sm: 10px;
  --shadow: 0 4px 24px rgba(0,0,0,0.3);
  --shadow-glow: 0 0 30px rgba(99,102,241,0.08);
  --transition: 0.2s cubic-bezier(0.4,0,0.2,1);
}

*,*::before,*::after { box-sizing: border-box; }

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg-dark);
  color: var(--text-primary);
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
}

/* ── SCROLLBAR ── */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg-dark); }
::-webkit-scrollbar-thumb { background: var(--text-muted); border-radius: 3px; }

/* ── LINKS ── */
a { color: var(--accent-light); text-decoration: none; transition: color var(--transition); }
a:hover { color: #a5b4fc; }

/* ── NAVBAR ── */
.navbar {
  background: linear-gradient(180deg, rgba(15,17,23,0.97), rgba(24,27,35,0.95)) !important;
  border-bottom: 1px solid var(--border-subtle);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  padding: 0.65rem 1.25rem;
}
.navbar-brand {
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: -0.02em;
  color: var(--text-primary) !important;
  display: flex; align-items: center; gap: 0.45rem;
}
.navbar-brand i {
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
  font-size: 1.3rem;
}
.navbar-dark .navbar-nav .nav-link {
  color: var(--text-secondary);
  font-weight: 500;
  font-size: 0.88rem;
  padding: 0.5rem 0.85rem;
  border-radius: var(--radius-sm);
  transition: all var(--transition);
}
.navbar-dark .navbar-nav .nav-link:hover,
.navbar-dark .navbar-nav .nav-link.active {
  color: var(--text-primary);
  background: var(--accent-glow);
}
.navbar-dark .navbar-nav .nav-link.active {
  color: var(--accent-light);
}

/* ── MAIN CONTENT AREA ── */
.main-content {
  padding: 2rem 2.5rem;
  max-width: 1400px;
  margin: 0 auto;
}

/* ── PAGE HEADINGS ── */
h2.fw-semibold, h2.page-title {
  font-weight: 700;
  font-size: 1.65rem;
  letter-spacing: -0.03em;
  color: var(--text-primary);
}

/* ── CARDS ── */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  transition: all var(--transition);
}
.card:hover {
  border-color: var(--border-glow);
  box-shadow: var(--shadow), var(--shadow-glow);
}
.card-header {
  background: transparent !important;
  border-bottom: 1px solid var(--border-subtle);
  color: var(--text-primary);
  font-weight: 600;
  padding: 1rem 1.25rem;
}
.card-body {
  padding: 1.25rem;
}

/* ── STAT CARDS ── */
.stat-card {
  background: var(--gradient-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius);
  padding: 1.75rem 1.25rem;
  text-align: center;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}
.stat-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  border-radius: var(--radius) var(--radius) 0 0;
}
.stat-card.stat-primary::before { background: var(--gradient-accent); }
.stat-card.stat-success::before { background: linear-gradient(90deg, #22c55e, #4ade80); }
.stat-card.stat-warning::before { background: linear-gradient(90deg, #f59e0b, #fbbf24); }
.stat-card:hover { transform: translateY(-2px); border-color: var(--border-glow); }
.stat-value {
  font-size: 2.75rem;
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1;
  margin-bottom: 0.5rem;
}
.stat-value.text-primary { color: var(--accent-light) !important; }
.stat-value.text-success { color: var(--success) !important; }
.stat-value.text-warning { color: var(--warning) !important; }
.stat-label {
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--text-muted);
}

/* ── TABLES ── */
.table {
  --bs-table-bg: transparent;
  --bs-table-color: var(--text-primary);
  --bs-table-hover-bg: rgba(255,255,255,0.03);
  margin-bottom: 0;
}
.table th {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  font-weight: 600;
  border-bottom: 1px solid var(--border-subtle);
  padding: 0.85rem 1rem;
  background: rgba(255,255,255,0.02);
}
.table td {
  border-bottom: 1px solid var(--border-subtle);
  padding: 0.85rem 1rem;
  vertical-align: middle;
  font-size: 0.9rem;
}
.table tbody tr {
  transition: background var(--transition);
}
.table tbody tr:hover {
  background: rgba(99,102,241,0.04);
}
.table .text-muted { color: var(--text-secondary) !important; }
.table .fw-medium { font-weight: 600; color: var(--text-primary); }

.table-light {
  --bs-table-bg: rgba(255,255,255,0.02);
}
thead.table-light th {
  background: rgba(255,255,255,0.02);
}

/* ── BADGES ── */
.badge {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  padding: 0.35em 0.7em;
  border-radius: 6px;
}
.badge.bg-primary { background: var(--accent) !important; }
.badge.bg-success { background: var(--success) !important; }
.badge.bg-warning { background: var(--warning) !important; color: #000 !important; }
.badge.bg-danger { background: var(--danger) !important; }
.badge.bg-secondary { background: var(--text-muted) !important; }

/* ── BUTTONS ── */
.btn {
  font-family: 'Inter', sans-serif;
  font-weight: 600;
  font-size: 0.88rem;
  border-radius: var(--radius-sm);
  transition: all var(--transition);
  letter-spacing: -0.01em;
}
.btn-primary {
  background: var(--gradient-accent);
  border: none;
  color: #fff;
  box-shadow: 0 2px 12px rgba(99,102,241,0.3);
}
.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 20px rgba(99,102,241,0.4);
  background: var(--gradient-accent);
  filter: brightness(1.1);
}
.btn-outline-primary {
  border-color: var(--accent);
  color: var(--accent-light);
}
.btn-outline-primary:hover {
  background: var(--accent-glow);
  border-color: var(--accent-light);
  color: var(--accent-light);
}
.btn-outline-secondary {
  border-color: var(--border-subtle);
  color: var(--text-secondary);
}
.btn-outline-secondary:hover {
  background: rgba(255,255,255,0.05);
  border-color: var(--text-muted);
  color: var(--text-primary);
}
.btn-outline-danger {
  border-color: rgba(239,68,68,0.3);
  color: var(--danger);
}
.btn-outline-danger:hover {
  background: var(--danger-bg);
  border-color: var(--danger);
  color: var(--danger);
}
.btn-lg {
  padding: 0.75rem 1.5rem;
  font-size: 0.95rem;
}

/* ── FORMS ── */
.form-control, .form-select {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 0.9rem;
  padding: 0.65rem 0.9rem;
  transition: all var(--transition);
}
.form-control:focus, .form-select:focus {
  background: var(--bg-card);
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
  color: var(--text-primary);
}
.form-control::placeholder { color: var(--text-muted); }
.form-control-lg { padding: 0.75rem 1rem; font-size: 0.95rem; }
.form-label {
  font-weight: 500;
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 0.4rem;
}
.form-text { color: var(--text-muted); font-size: 0.78rem; }

textarea.form-control {
  resize: vertical;
  min-height: 80px;
}

/* ── ALERTS ── */
.alert {
  border-radius: var(--radius-sm);
  border: none;
  font-size: 0.88rem;
  font-weight: 500;
}
.alert-success {
  background: var(--success-bg);
  color: var(--success);
  border: 1px solid rgba(34,197,94,0.2);
}
.alert-danger {
  background: var(--danger-bg);
  color: var(--danger);
  border: 1px solid rgba(239,68,68,0.2);
}
.alert-warning {
  background: var(--warning-bg);
  color: var(--warning);
  border: 1px solid rgba(245,158,11,0.2);
}
.alert-warning .alert-link { color: var(--warning); font-weight: 700; }
.alert .btn-close {
  filter: invert(1);
  opacity: 0.5;
}

/* ── NAV TABS (appointments filter) ── */
.nav-tabs {
  border-bottom: 1px solid var(--border-subtle);
  gap: 0.25rem;
}
.nav-tabs .nav-link {
  color: var(--text-secondary);
  font-weight: 500;
  font-size: 0.85rem;
  border: none;
  border-radius: var(--radius-sm) var(--radius-sm) 0 0;
  padding: 0.55rem 1rem;
  transition: all var(--transition);
}
.nav-tabs .nav-link:hover {
  color: var(--text-primary);
  background: rgba(255,255,255,0.03);
  border-color: transparent;
}
.nav-tabs .nav-link.active {
  background: var(--bg-card);
  color: var(--accent-light);
  border: 1px solid var(--border-subtle);
  border-bottom-color: var(--bg-card);
}

/* ── PAGINATION ── */
.pagination .page-link {
  background: var(--bg-card);
  border-color: var(--border-subtle);
  color: var(--text-secondary);
  font-size: 0.85rem;
  font-weight: 500;
  transition: all var(--transition);
}
.pagination .page-link:hover {
  background: var(--accent-glow);
  border-color: var(--accent);
  color: var(--accent-light);
}
.pagination .page-item.active .page-link {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}
.pagination .page-item.disabled .page-link {
  background: var(--bg-surface);
  color: var(--text-muted);
}

/* ── DROPDOWN ── */
.dropdown-menu {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow);
  padding: 0.35rem;
}
.dropdown-item {
  color: var(--text-secondary);
  font-size: 0.85rem;
  border-radius: 6px;
  padding: 0.45rem 0.85rem;
  transition: all var(--transition);
}
.dropdown-item:hover {
  background: var(--accent-glow);
  color: var(--text-primary);
}
.dropdown-item.fw-bold.text-primary {
  color: var(--accent-light) !important;
}
.dropdown-divider { border-color: var(--border-subtle); }

/* ── AUTH PAGES (login/register) ── */
.auth-wrapper {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient-hero);
  position: relative;
  overflow: hidden;
}
.auth-wrapper::before {
  content: '';
  position: absolute;
  width: 500px; height: 500px;
  background: radial-gradient(circle, rgba(99,102,241,0.12) 0%, transparent 70%);
  top: 10%; right: 15%;
  pointer-events: none;
}
.auth-wrapper::after {
  content: '';
  position: absolute;
  width: 400px; height: 400px;
  background: radial-gradient(circle, rgba(139,92,246,0.08) 0%, transparent 70%);
  bottom: 10%; left: 10%;
  pointer-events: none;
}
.auth-card {
  background: var(--glass);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow), var(--shadow-glow);
  padding: 2.5rem;
  width: 100%;
  max-width: 420px;
  position: relative;
  z-index: 1;
}
.auth-logo {
  text-align: center;
  margin-bottom: 2rem;
}
.auth-logo i {
  font-size: 2.5rem;
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}
.auth-logo h2 {
  font-weight: 800;
  font-size: 1.5rem;
  letter-spacing: -0.03em;
  margin-top: 0.5rem;
  color: var(--text-primary);
}
.auth-logo p {
  color: var(--text-muted);
  font-size: 0.88rem;
  margin-top: 0.25rem;
}
.auth-card h5 {
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--text-primary);
  margin-bottom: 1.5rem;
}
.auth-card hr {
  border-color: var(--border-subtle);
  opacity: 1;
}
.auth-card .text-muted { color: var(--text-secondary) !important; }

/* ── SETUP WARNING BANNER ── */
.setup-warning {
  background: linear-gradient(135deg, rgba(245,158,11,0.08), rgba(245,158,11,0.03));
  border: 1px solid rgba(245,158,11,0.15);
  border-radius: var(--radius-sm);
  color: var(--warning);
  padding: 1rem 1.25rem;
}

/* ── EMPTY STATE ── */
.empty-state {
  padding: 3.5rem 1rem;
  text-align: center;
  color: var(--text-muted);
}
.empty-state i {
  font-size: 3.5rem;
  opacity: 0.3;
  margin-bottom: 1rem;
  display: block;
}

/* ── UTILITIES ── */
.text-muted { color: var(--text-secondary) !important; }
.bg-light { background: var(--bg-dark) !important; }
.bg-white { background: transparent !important; }
.shadow-sm { box-shadow: none !important; }
.border-0 { border: 1px solid var(--border-subtle) !important; }

code {
  background: rgba(99,102,241,0.1);
  color: var(--accent-light);
  padding: 0.15em 0.45em;
  border-radius: 4px;
  font-size: 0.82em;
}

/* ── RESPONSIVE ── */
@media (max-width: 768px) {
  .main-content { padding: 1rem; }
  .stat-value { font-size: 2rem; }
  .auth-card { margin: 1rem; padding: 1.75rem; }
}