/* ============================================================
   DroneAir App Styles — Login / Dashboard
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&family=JetBrains+Mono:wght@400;500&display=swap');

:root {
  --color-bg-primary: #0a0e1a;
  --color-bg-secondary: #111827;
  --color-bg-tertiary: #1a2236;
  --color-bg-card: rgba(26, 34, 54, 0.6);
  --color-bg-glass: rgba(17, 24, 39, 0.7);

  --color-text-primary: #f1f5f9;
  --color-text-secondary: #94a3b8;
  --color-text-muted: #64748b;

  --color-accent: #38bdf8;
  --color-accent-hover: #7dd3fc;
  --color-accent-glow: rgba(56, 189, 248, 0.3);

  --color-cyan: #22d3ee;
  --color-emerald: #34d399;
  --color-violet: #a78bfa;
  --color-amber: #fbbf24;
  --color-rose: #fb7185;
  --color-red: #ef4444;

  --gradient-primary: linear-gradient(135deg, #38bdf8 0%, #a78bfa 50%, #fb7185 100%);
  --gradient-accent: linear-gradient(135deg, #38bdf8 0%, #22d3ee 100%);

  --border-subtle: 1px solid rgba(148, 163, 184, 0.1);

  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 30px rgba(56, 189, 248, 0.15);

  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 400ms cubic-bezier(0.16, 1, 0.3, 1);

  --sidebar-width: 260px;
}

*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text-primary);
  background: var(--color-bg-primary);
  overflow-x: hidden;
}

a { color: var(--color-accent); text-decoration: none; }
a:hover { color: var(--color-accent-hover); }
ul { list-style: none; }

/* ============================================================
   LOGIN PAGE
   ============================================================ */
.login-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background:
    radial-gradient(ellipse at 20% 50%, rgba(56, 189, 248, 0.1) 0%, transparent 60%),
    radial-gradient(ellipse at 80% 30%, rgba(167, 139, 250, 0.08) 0%, transparent 60%),
    var(--color-bg-primary);
  padding: 2rem;
}

.login-card {
  width: 100%;
  max-width: 420px;
  background: var(--color-bg-card);
  backdrop-filter: blur(20px);
  border: var(--border-subtle);
  border-radius: var(--radius-xl);
  padding: 2.5rem;
  box-shadow: var(--shadow-lg);
  animation: fadeInUp 0.5s ease;
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

.login-card__logo {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-size: 1.4rem;
  font-weight: 800;
  margin-bottom: 0.5rem;
  letter-spacing: -0.02em;
}

.login-card__logo-icon {
  width: 40px;
  height: 40px;
  background: var(--gradient-accent);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
}

.login-card__subtitle {
  text-align: center;
  color: var(--color-text-muted);
  font-size: 0.9rem;
  margin-bottom: 2rem;
}

.login-form .form-group {
  margin-bottom: 1.25rem;
}

.login-form .form-label {
  display: block;
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  margin-bottom: 0.4rem;
}

.login-form .form-input {
  width: 100%;
  padding: 0.7rem 1rem;
  background: var(--color-bg-tertiary);
  border: 1px solid rgba(148, 163, 184, 0.15);
  border-radius: var(--radius-md);
  color: var(--color-text-primary);
  font-family: var(--font-sans);
  font-size: 0.95rem;
  transition: all var(--transition-fast);
  outline: none;
}

.login-form .form-input:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px var(--color-accent-glow);
}

.login-form .btn-login {
  width: 100%;
  padding: 0.8rem;
  background: var(--gradient-accent);
  color: var(--color-bg-primary);
  font-family: var(--font-sans);
  font-size: 0.95rem;
  font-weight: 700;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-base);
  margin-top: 0.5rem;
}

.login-form .btn-login:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-glow);
}

.login-form .btn-login:active {
  transform: translateY(0);
}

.login-card__footer {
  text-align: center;
  margin-top: 1.5rem;
  font-size: 0.82rem;
  color: var(--color-text-muted);
}

.login-card__footer a {
  font-weight: 500;
}

/* Flash messages */
.flash-messages {
  margin-bottom: 1rem;
}

.flash {
  padding: 0.7rem 1rem;
  border-radius: var(--radius-md);
  font-size: 0.85rem;
  font-weight: 500;
  margin-bottom: 0.5rem;
}

.flash--error {
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.2);
  color: var(--color-rose);
}

.flash--success {
  background: rgba(52, 211, 153, 0.1);
  border: 1px solid rgba(52, 211, 153, 0.2);
  color: var(--color-emerald);
}

.flash--info {
  background: rgba(56, 189, 248, 0.1);
  border: 1px solid rgba(56, 189, 248, 0.2);
  color: var(--color-accent);
}

/* ============================================================
   DASHBOARD LAYOUT
   ============================================================ */
.dashboard {
  display: flex;
  min-height: 100vh;
}

/* --- Sidebar --- */
.sidebar {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  width: var(--sidebar-width);
  background: var(--color-bg-secondary);
  border-right: var(--border-subtle);
  display: flex;
  flex-direction: column;
  z-index: 100;
  transition: transform var(--transition-slow);
}

.sidebar__header {
  padding: 1.5rem;
  border-bottom: var(--border-subtle);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 1.15rem;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.sidebar__logo-icon {
  width: 32px;
  height: 32px;
  background: var(--gradient-accent);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
}

.sidebar__nav {
  flex: 1;
  padding: 1rem 0.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.sidebar__link {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.65rem 0.85rem;
  color: var(--color-text-secondary);
  font-size: 0.88rem;
  font-weight: 500;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.sidebar__link:hover {
  background: rgba(148, 163, 184, 0.05);
  color: var(--color-text-primary);
}

.sidebar__link--active {
  background: rgba(56, 189, 248, 0.1);
  color: var(--color-accent);
}

.sidebar__link-icon {
  font-size: 1.15rem;
  width: 24px;
  text-align: center;
}

.sidebar__section-label {
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  padding: 1rem 0.85rem 0.4rem;
}

.sidebar__footer {
  padding: 1rem 0.75rem;
  border-top: var(--border-subtle);
}

.sidebar__user {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.65rem 0.85rem;
  border-radius: var(--radius-md);
}

.sidebar__user-avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--gradient-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.85rem;
  color: var(--color-bg-primary);
}

.sidebar__user-info {
  flex: 1;
  min-width: 0;
}

.sidebar__user-name {
  font-size: 0.85rem;
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.sidebar__user-email {
  font-size: 0.72rem;
  color: var(--color-text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.sidebar__logout {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.65rem 0.85rem;
  color: var(--color-rose);
  font-size: 0.88rem;
  font-weight: 500;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  width: 100%;
  margin-top: 0.5rem;
}

.sidebar__logout:hover {
  background: rgba(251, 113, 133, 0.1);
  color: var(--color-rose);
}

/* --- Main Content --- */
.main {
  flex: 1;
  margin-left: var(--sidebar-width);
  padding: 2rem;
}

.main__header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 2rem;
}

.main__title {
  font-size: 1.6rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.main__subtitle {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  margin-top: 0.25rem;
}

.mobile-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--color-text-primary);
  font-size: 1.4rem;
  cursor: pointer;
  padding: 0.5rem;
}

/* --- Dashboard Cards --- */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.25rem;
  margin-bottom: 2rem;
}

.stat-card {
  background: var(--color-bg-card);
  backdrop-filter: blur(10px);
  border: var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  transition: all var(--transition-slow);
  position: relative;
  overflow: hidden;
}

.stat-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}

.stat-card--blue::before { background: var(--color-accent); }
.stat-card--emerald::before { background: var(--color-emerald); }
.stat-card--violet::before { background: var(--color-violet); }
.stat-card--amber::before { background: var(--color-amber); }

.stat-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.stat-card__header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 0.75rem;
}

.stat-card__label {
  font-size: 0.82rem;
  color: var(--color-text-muted);
  font-weight: 500;
}

.stat-card__icon {
  font-size: 1.3rem;
  opacity: 0.7;
}

.stat-card__value {
  font-size: 2rem;
  font-weight: 800;
  line-height: 1;
  margin-bottom: 0.5rem;
}

.stat-card__change {
  font-size: 0.78rem;
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 0.2rem;
}

.stat-card__change--up { color: var(--color-emerald); }
.stat-card__change--down { color: var(--color-rose); }

/* --- Dashboard Panel --- */
.dashboard-panel {
  background: var(--color-bg-card);
  backdrop-filter: blur(10px);
  border: var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  margin-bottom: 1.5rem;
}

.dashboard-panel__header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.25rem;
}

.dashboard-panel__title {
  font-size: 1rem;
  font-weight: 600;
}

.dashboard-panel__badge {
  font-size: 0.72rem;
  font-weight: 600;
  padding: 0.25rem 0.6rem;
  border-radius: var(--radius-full);
  background: rgba(56, 189, 248, 0.1);
  color: var(--color-accent);
}

/* Activity list */
.activity-list {
  display: flex;
  flex-direction: column;
}

.activity-item {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  padding: 0.85rem 0;
  border-bottom: var(--border-subtle);
}

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

.activity-item__dot {
  width: 8px;
  height: 8px;
  min-width: 8px;
  border-radius: 50%;
  margin-top: 0.4rem;
}

.activity-item__dot--blue { background: var(--color-accent); }
.activity-item__dot--emerald { background: var(--color-emerald); }
.activity-item__dot--amber { background: var(--color-amber); }
.activity-item__dot--violet { background: var(--color-violet); }

.activity-item__text {
  font-size: 0.88rem;
  color: var(--color-text-secondary);
  line-height: 1.5;
}

.activity-item__text strong {
  color: var(--color-text-primary);
  font-weight: 600;
}

.activity-item__time {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  white-space: nowrap;
  margin-left: auto;
}

/* Quick actions */
.quick-actions {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 0.75rem;
}

.quick-action {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 1rem;
  background: var(--color-bg-tertiary);
  border: var(--border-subtle);
  border-radius: var(--radius-md);
  color: var(--color-text-primary);
  font-size: 0.88rem;
  font-weight: 500;
  transition: all var(--transition-fast);
  cursor: pointer;
  text-decoration: none;
}

.quick-action:hover {
  background: rgba(56, 189, 248, 0.05);
  border-color: rgba(56, 189, 248, 0.2);
  color: var(--color-accent);
  transform: translateY(-1px);
}

.quick-action__icon {
  font-size: 1.3rem;
}

/* ============================================================
   SETTINGS PAGE
   ============================================================ */
.settings-form {
  max-width: 560px;
}

.settings-form .form-group {
  margin-bottom: 1.25rem;
}

.settings-form .form-label {
  display: block;
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  margin-bottom: 0.4rem;
}

.settings-form .form-input {
  width: 100%;
  padding: 0.7rem 1rem;
  background: var(--color-bg-tertiary);
  border: 1px solid rgba(148, 163, 184, 0.15);
  border-radius: var(--radius-md);
  color: var(--color-text-primary);
  font-family: var(--font-sans);
  font-size: 0.95rem;
  transition: all var(--transition-fast);
  outline: none;
}

.settings-form .form-input:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px var(--color-accent-glow);
}

.settings-form .form-input:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.settings-form .btn-save {
  padding: 0.7rem 1.75rem;
  background: var(--gradient-accent);
  color: var(--color-bg-primary);
  font-family: var(--font-sans);
  font-size: 0.9rem;
  font-weight: 700;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-base);
}

.settings-form .btn-save:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-glow);
}

.settings-divider {
  border: none;
  border-top: var(--border-subtle);
  margin: 1.5rem 0;
}

/* ============================================================
   REGISTRATION PAGE
   ============================================================ */
.register-note {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 1rem;
  padding: 0.7rem 1rem;
  background: rgba(56, 189, 248, 0.08);
  border: 1px solid rgba(56, 189, 248, 0.15);
  border-radius: var(--radius-md);
  font-size: 0.8rem;
  color: var(--color-text-secondary);
  line-height: 1.4;
}

.register-note__icon {
  font-size: 1rem;
  flex-shrink: 0;
}

/* ============================================================
   SIDEBAR BADGE (pending count)
   ============================================================ */
.sidebar__badge {
  font-size: 0.65rem;
  font-weight: 700;
  padding: 0.15rem 0.45rem;
  border-radius: var(--radius-full);
  background: var(--color-rose);
  color: white;
  margin-left: auto;
  min-width: 18px;
  text-align: center;
  line-height: 1.3;
}

/* ============================================================
   ADMIN PANEL
   ============================================================ */
.dashboard-panel__badge--warning {
  background: rgba(251, 191, 36, 0.15);
  color: var(--color-amber);
}

.admin-table-wrap {
  overflow-x: auto;
}

.admin-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
}

.admin-table thead th {
  text-align: left;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 0.6rem 0.75rem;
  border-bottom: var(--border-subtle);
}

.admin-table tbody tr {
  border-bottom: var(--border-subtle);
  transition: background var(--transition-fast);
}

.admin-table tbody tr:last-child {
  border-bottom: none;
}

.admin-table tbody tr:hover {
  background: rgba(148, 163, 184, 0.03);
}

.admin-table td {
  padding: 0.75rem;
  vertical-align: middle;
}

.admin-table__user {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.admin-table__avatar {
  width: 30px;
  height: 30px;
  min-width: 30px;
  border-radius: 50%;
  background: var(--gradient-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.7rem;
  color: var(--color-bg-primary);
}

.admin-table__muted {
  color: var(--color-text-muted);
  font-size: 0.82rem;
}

.admin-table__actions {
  display: flex;
  gap: 0.4rem;
  flex-wrap: wrap;
}

/* Status badges */
.status-badge {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 600;
  padding: 0.2rem 0.55rem;
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.status-badge--approved {
  background: rgba(52, 211, 153, 0.12);
  color: var(--color-emerald);
}

.status-badge--pending {
  background: rgba(251, 191, 36, 0.12);
  color: var(--color-amber);
}

.status-badge--admin {
  background: rgba(167, 139, 250, 0.12);
  color: var(--color-violet);
}

.status-badge--user {
  background: rgba(148, 163, 184, 0.08);
  color: var(--color-text-muted);
}

/* Admin action buttons */
.admin-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  padding: 0.35rem 0.7rem;
  font-family: var(--font-sans);
  font-size: 0.75rem;
  font-weight: 600;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
  background: none;
}

.admin-btn--approve {
  color: var(--color-emerald);
  border-color: rgba(52, 211, 153, 0.3);
  background: rgba(52, 211, 153, 0.08);
}

.admin-btn--approve:hover {
  background: rgba(52, 211, 153, 0.2);
  border-color: var(--color-emerald);
}

.admin-btn--reject {
  color: var(--color-rose);
  border-color: rgba(251, 113, 133, 0.3);
  background: rgba(251, 113, 133, 0.08);
}

.admin-btn--reject:hover {
  background: rgba(251, 113, 133, 0.2);
  border-color: var(--color-rose);
}

.admin-btn--neutral {
  color: var(--color-text-secondary);
  border-color: rgba(148, 163, 184, 0.2);
  background: rgba(148, 163, 184, 0.05);
}

.admin-btn--neutral:hover {
  color: var(--color-accent);
  border-color: rgba(56, 189, 248, 0.3);
  background: rgba(56, 189, 248, 0.08);
}

.admin-empty {
  text-align: center;
  color: var(--color-text-muted);
  font-size: 0.9rem;
  padding: 2rem;
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 768px) {
  .sidebar {
    transform: translateX(-100%);
  }

  .sidebar.open {
    transform: translateX(0);
  }

  .sidebar-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    z-index: 99;
  }

  .sidebar-overlay.active {
    display: block;
  }

  .main {
    margin-left: 0;
    padding: 1.25rem;
  }

  .mobile-toggle {
    display: block;
  }

  .stats-grid {
    grid-template-columns: 1fr;
  }

  .quick-actions {
    grid-template-columns: 1fr;
  }

  .login-card {
    padding: 1.5rem;
  }
}