/* ============================================
   WingVu – Aviation Light Design System
   ============================================ */

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

:root {
    --primary: #0EA5E9;
    --primary-dark: #0284C7;
    --primary-light: #38BDF8;
    --primary-50: #F0F9FF;
    --primary-100: #E0F2FE;
    --accent: #F59E0B;
    --accent-dark: #D97706;
    --accent-light: #FCD34D;
    --success: #10B981;
    --success-light: #D1FAE5;
    --danger: #EF4444;
    --danger-light: #FEE2E2;
    --warning: #F59E0B;
    --warning-light: #FEF3C7;
    --slate-50: #F8FAFC;
    --slate-100: #F1F5F9;
    --slate-200: #E2E8F0;
    --slate-300: #CBD5E1;
    --slate-400: #94A3B8;
    --slate-500: #64748B;
    --slate-600: #475569;
    --slate-700: #334155;
    --slate-800: #1E293B;
    --slate-900: #0F172A;
    --white: #FFFFFF;
    --radius: 10px;
    --radius-lg: 14px;
    --radius-full: 9999px;
    --shadow-sm: 0 1px 2px rgba(0,0,0,.05);
    --shadow: 0 1px 3px rgba(0,0,0,.1), 0 1px 2px rgba(0,0,0,.06);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,.1), 0 2px 4px -1px rgba(0,0,0,.06);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,.1), 0 4px 6px -2px rgba(0,0,0,.05);
    --font: 'Inter', -apple-system, sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
}

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

body {
    font-family: var(--font);
    line-height: 1.6;
    color: var(--slate-800);
    background: var(--primary-50);
    -webkit-font-smoothing: antialiased;
}

a { color: var(--primary); text-decoration: none; }
a:hover { color: var(--primary-dark); }

.mono { font-family: var(--font-mono); font-size: .9em; }

/* ============================================
   BUTTONS
   ============================================ */
.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: .4rem;
    padding: .6rem 1.4rem; border: none; border-radius: var(--radius);
    font: 600 .9rem var(--font); cursor: pointer; text-decoration: none;
    transition: all .2s ease;
}
.btn:active { transform: scale(.97); }
.btn-primary { background: var(--primary); color: var(--white); box-shadow: 0 2px 6px rgba(14,165,233,.3); }
.btn-primary:hover { background: var(--primary-dark); color: var(--white); }
.btn-outline { background: transparent; border: 1.5px solid var(--primary); color: var(--primary); }
.btn-outline:hover { background: var(--primary-50); }
.btn-ghost { background: transparent; color: var(--slate-600); }
.btn-ghost:hover { background: var(--slate-100); color: var(--slate-800); }
.btn-danger { background: var(--danger); color: var(--white); }
.btn-danger:hover { background: #DC2626; color: var(--white); }
.btn-sm { padding: .35rem .9rem; font-size: .82rem; }
.btn-block { width: 100%; padding: .75rem; }

/* ============================================
   FORMS
   ============================================ */
.form-group { margin-bottom: 1rem; }
.form-group label { display: block; font-weight: 600; font-size: .88rem; color: var(--slate-700); margin-bottom: .3rem; }
.form-group input, .form-group select, .form-group textarea {
    width: 100%; padding: .6rem .85rem; border: 1.5px solid var(--slate-300);
    border-radius: var(--radius); font: .95rem var(--font); color: var(--slate-800);
    background: var(--white); transition: all .2s;
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
    outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px rgba(14,165,233,.15);
}
.form-group input::placeholder { color: var(--slate-400); }
.form-group textarea { resize: vertical; min-height: 80px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.form-help { font-size: .82rem; color: var(--slate-500); margin-top: .2rem; }

/* ============================================
   FLASH MESSAGES
   ============================================ */
.flash-container { position: fixed; top: 1rem; right: 1rem; z-index: 9999; max-width: 400px; }
.flash {
    padding: .75rem 1rem; border-radius: var(--radius); margin-bottom: .5rem;
    font-size: .9rem; font-weight: 500; display: flex; justify-content: space-between; align-items: center;
    animation: slideIn .3s ease; box-shadow: var(--shadow-md);
}
@keyframes slideIn { from { opacity: 0; transform: translateX(20px); } to { opacity: 1; transform: translateX(0); } }
.flash-success { background: var(--success-light); color: #065F46; border-left: 4px solid var(--success); }
.flash-error { background: var(--danger-light); color: #991B1B; border-left: 4px solid var(--danger); }
.flash-warning { background: var(--warning-light); color: #92400E; border-left: 4px solid var(--warning); }
.flash-close { background: none; border: none; font-size: 1.2rem; cursor: pointer; opacity: .5; line-height: 1; }

/* ============================================
   BADGES
   ============================================ */
.badge {
    display: inline-flex; align-items: center; gap: .25rem;
    padding: .15rem .6rem; border-radius: var(--radius-full);
    font-size: .78rem; font-weight: 600;
}
.badge-draft { background: var(--slate-200); color: var(--slate-600); }
.badge-published { background: var(--primary-100); color: var(--primary-dark); }
.badge-confirmed { background: var(--success-light); color: #065F46; }
.badge-pending { background: var(--warning-light); color: #92400E; }
.badge-cancelled { background: var(--danger-light); color: #991B1B; }
.badge-completed { background: var(--slate-200); color: var(--slate-700); }

/* ============================================
   DATA TABLE
   ============================================ */
.table-wrap { overflow-x: auto; border-radius: var(--radius-lg); box-shadow: var(--shadow); }
.data-table { width: 100%; border-collapse: collapse; background: var(--white); font-size: .88rem; }
.data-table th, .data-table td { padding: .65rem .8rem; text-align: left; border-bottom: 1px solid var(--slate-100); }
.data-table th {
    background: var(--slate-50); font-weight: 600; color: var(--slate-500);
    font-size: .8rem; text-transform: uppercase; letter-spacing: .04em;
    position: sticky; top: 0; border-bottom: 2px solid var(--slate-200);
}
.data-table tbody tr { transition: background .15s; }
.data-table tbody tr:hover td { background: var(--primary-50); }

/* ============================================
   STATS GRID
   ============================================ */
.stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 1rem; margin-bottom: 1.5rem; }
.stat-card {
    background: var(--white); border-radius: var(--radius-lg); padding: 1.25rem;
    box-shadow: var(--shadow); display: flex; align-items: center; gap: 1rem;
}
.stat-icon {
    width: 48px; height: 48px; border-radius: var(--radius); display: flex;
    align-items: center; justify-content: center; flex-shrink: 0;
}
.stat-icon svg { width: 24px; height: 24px; }
.stat-icon-blue { background: var(--primary-100); color: var(--primary); }
.stat-icon-sky { background: #E0F2FE; color: #0284C7; }
.stat-icon-green { background: var(--success-light); color: var(--success); }
.stat-icon-amber { background: var(--warning-light); color: var(--accent-dark); }
.stat-number { display: block; font-size: 1.5rem; font-weight: 800; color: var(--slate-800); font-family: var(--font-mono); }
.stat-label { font-size: .82rem; color: var(--slate-500); }

/* ============================================
   DASHBOARD SECTIONS
   ============================================ */
.dashboard-section { margin-bottom: 2rem; }
.section-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: .75rem; }
.section-header h2 { font-size: 1.15rem; font-weight: 700; color: var(--slate-800); }
.empty-state { text-align: center; padding: 3rem; background: var(--white); border-radius: var(--radius-lg); box-shadow: var(--shadow); color: var(--slate-400); }
.empty-state p { margin-bottom: 1rem; }

/* ============================================
   AUTH PAGE
   ============================================ */
.auth-page { display: flex; align-items: center; justify-content: center; min-height: 100vh; background: linear-gradient(135deg, var(--primary-50) 0%, #E0F2FE 100%); }
.auth-container { width: 100%; max-width: 420px; padding: 1rem; }
.auth-card { background: var(--white); border-radius: var(--radius-lg); box-shadow: var(--shadow-lg); padding: 2.5rem; }
.auth-brand { text-align: center; margin-bottom: 2rem; }
.auth-icon { width: 48px; height: 48px; color: var(--primary); margin-bottom: .5rem; }
.auth-brand h1 { font-size: 1.4rem; color: var(--slate-800); }
.auth-brand p { color: var(--slate-500); font-size: .9rem; }

/* ============================================
   ERROR PAGE
   ============================================ */
.error-page { display: flex; align-items: center; justify-content: center; min-height: 100vh; }
.error-container { text-align: center; }
.error-container h1 { font-size: 5rem; color: var(--slate-300); font-weight: 800; }
.error-container p { color: var(--slate-500); margin-bottom: 1.5rem; }

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 768px) {
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
    .form-row { grid-template-columns: 1fr; }
}
@media (max-width: 480px) {
    .stats-grid { grid-template-columns: 1fr; }
}