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

/* ═══════════════════════════════════════════
   Avium — iOS 26 Liquid Glass Design System
   Light (default) + Dark Theme
   ═══════════════════════════════════════════ */

:root {
    --font: 'Inter', -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Helvetica Neue', sans-serif;
    --transition: all 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    --transition-fast: all 0.18s ease;
    --radius-sm: 10px;
    --radius-md: 16px;
    --radius-lg: 22px;
    --radius-xl: 28px;
    --radius-pill: 980px;
}

/* ── LIGHT THEME (default) ── */
:root,
[data-theme="light"] {
    --bg-gradient: linear-gradient(145deg, #f0f2f7 0%, #e4e8f0 30%, #dce1ec 55%, #eef1f6 100%);
    --bg-solid: #edf0f5;
    --glass-bg: rgba(255, 255, 255, 0.42);
    --glass-bg-hover: rgba(255, 255, 255, 0.58);
    --glass-bg-active: rgba(255, 255, 255, 0.68);
    --glass-border: rgba(255, 255, 255, 0.55);
    --glass-border-light: rgba(255, 255, 255, 0.75);
    --glass-blur: 14px;
    --glass-blur-heavy: 22px;
    --text-primary: #1d1d2e;
    --text-secondary: rgba(29, 29, 46, 0.50);
    --text-tertiary: rgba(29, 29, 46, 0.28);
    --accent: #3478f6;
    --accent-hover: #2563eb;
    --accent-soft: rgba(52, 120, 246, 0.10);
    --accent-glow: rgba(52, 120, 246, 0.18);
    --success: #30d158;
    --success-soft: rgba(48, 209, 88, 0.10);
    --warning: #ff9f0a;
    --warning-soft: rgba(255, 159, 10, 0.10);
    --danger: #ff3b30;
    --danger-soft: rgba(255, 59, 48, 0.08);
    --shadow-glass: 0 8px 32px rgba(0, 0, 0, 0.06), inset 0 1px 0 rgba(255, 255, 255, 0.90);
    --shadow-glass-hover: 0 12px 40px rgba(0, 0, 0, 0.10), inset 0 1px 0 rgba(255, 255, 255, 1);
    --shadow-glow: 0 0 20px rgba(52, 120, 246, 0.12);
    --shadow-subtle: 0 2px 12px rgba(0, 0, 0, 0.06);
    --card-highlight: rgba(255, 255, 255, 0.80);
    --card-hl: rgba(255, 255, 255, 0.80);
    --input-bg: rgba(0, 0, 0, 0.03);
    --modal-overlay: rgba(0, 0, 0, 0.25);
}

/* ── DARK THEME ── */
[data-theme="dark"] {
    --bg-gradient: linear-gradient(145deg, #0a0e27 0%, #131842 30%, #1a1f5e 55%, #0f1336 100%);
    --bg-solid: #0d1130;
    --glass-bg: rgba(255, 255, 255, 0.06);
    --glass-bg-hover: rgba(255, 255, 255, 0.10);
    --glass-bg-active: rgba(255, 255, 255, 0.14);
    --glass-border: rgba(255, 255, 255, 0.12);
    --glass-border-light: rgba(255, 255, 255, 0.18);
    --glass-blur: 10px;
    --glass-blur-heavy: 16px;
    --text-primary: rgba(255, 255, 255, 0.95);
    --text-secondary: rgba(255, 255, 255, 0.50);
    --text-tertiary: rgba(255, 255, 255, 0.30);
    --accent: #5e9cff;
    --accent-hover: #7bb3ff;
    --accent-soft: rgba(94, 156, 255, 0.15);
    --accent-glow: rgba(94, 156, 255, 0.30);
    --success: #34d399;
    --success-soft: rgba(52, 211, 153, 0.12);
    --warning: #fbbf24;
    --warning-soft: rgba(251, 191, 36, 0.12);
    --danger: #f87171;
    --danger-soft: rgba(248, 113, 113, 0.12);
    --shadow-glass: 0 8px 32px rgba(0, 0, 0, 0.25), inset 0 1px 0 rgba(255, 255, 255, 0.08);
    --shadow-glass-hover: 0 12px 40px rgba(0, 0, 0, 0.3), inset 0 1px 0 rgba(255, 255, 255, 0.12);
    --shadow-glow: 0 0 20px rgba(94, 156, 255, 0.15);
    --shadow-subtle: 0 2px 12px rgba(0, 0, 0, 0.15);
    --card-highlight: rgba(255, 255, 255, 0.12);
    --card-hl: rgba(255, 255, 255, 0.12);
    --input-bg: rgba(255, 255, 255, 0.04);
    --modal-overlay: rgba(0, 0, 0, 0.55);
}

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

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font);
    background: var(--bg-gradient);
    /* background-attachment: fixed; - REMOVED: causes severe lag on older GPUs when combined with backdrop-filter */
    color: var(--text-primary);
    min-height: 100vh;
    overflow-x: hidden;
    line-height: 1.5;
    transition: background 0.5s ease, color 0.3s ease;
}

/* ── Glass Card (shared) ── */
.glass-card {
    background: var(--glass-bg);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    transform: translateZ(0);
    will-change: transform, backdrop-filter;
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-xl);
    padding: 28px;
    box-shadow: var(--shadow-glass);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.glass-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--card-hl, var(--card-highlight)), transparent);
}

.glass-card:hover {
    background: var(--glass-bg-hover);
    box-shadow: var(--shadow-glass-hover);
    border-color: var(--glass-border-light);
}

@keyframes fadeInScale {
    from {
        opacity: 0;
        transform: scale(0.97) translateY(8px);
    }

    to {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

a {
    color: var(--accent);
    text-decoration: none;
    transition: var(--transition-fast);
}

a:hover {
    color: var(--accent-hover);
}

h1,
h2,
h3,
h4,
h5,
h6 {
    font-weight: 700;
    line-height: 1.2;
    color: var(--text-primary);
    letter-spacing: -0.02em;
}

.text-accent {
    color: var(--accent);
}

.text-secondary {
    color: var(--text-secondary);
}

.text-success {
    color: var(--success);
}

.text-danger {
    color: var(--danger);
}

.text-warning {
    color: var(--warning);
}

/* ── Soft Panel (legacy compat) ── */
.soft-panel {
    background: var(--glass-bg);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    transform: translateZ(0);
    will-change: transform, backdrop-filter;
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-xl);
    padding: 28px;
    box-shadow: var(--shadow-glass);
}

/* ── Navigation ── */
header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 72px;
    background: var(--glass-bg);
    backdrop-filter: blur(var(--glass-blur-heavy));
    -webkit-backdrop-filter: blur(var(--glass-blur-heavy));
    transform: translateZ(0);
    will-change: transform, backdrop-filter;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 32px;
    z-index: 100;
    border-bottom: 1px solid var(--glass-border);
}

.brand {
    font-size: 18px;
    font-weight: 800;
    letter-spacing: 2px;
    text-transform: uppercase;
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--text-primary);
}

.brand i {
    color: var(--accent);
    font-size: 22px;
}

.nav-links {
    display: flex;
    gap: 8px;
    align-items: center;
}

.nav-links a {
    color: var(--text-secondary);
    font-weight: 600;
    font-size: 14px;
    padding: 8px 18px;
    border-radius: var(--radius-pill);
    transition: var(--transition-fast);
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--text-primary);
    background: var(--accent-soft);
}

/* ── Buttons ── */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    border-radius: var(--radius-md);
    font-size: 14px;
    font-weight: 600;
    font-family: var(--font);
    border: none;
    cursor: pointer;
    transition: var(--transition);
    outline: none;
    text-decoration: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent-soft), rgba(52, 120, 246, 0.05));
    color: var(--accent);
    border: 1px solid rgba(52, 120, 246, 0.20);
    backdrop-filter: blur(12px);
}

.btn-primary:hover {
    background: var(--accent-glow);
    box-shadow: var(--shadow-glow);
}

.btn-secondary {
    background: var(--glass-bg);
    color: var(--text-primary);
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(12px);
}

.btn-secondary:hover {
    background: var(--glass-bg-hover);
    border-color: var(--glass-border-light);
}

.btn-ghost {
    background: transparent;
    color: var(--text-secondary);
    border: 1px solid transparent;
}

.btn-ghost:hover {
    color: var(--text-primary);
    background: var(--accent-soft);
}

/* ── Layout ── */
main {
    margin-top: 72px;
    padding: 48px 32px 60px;
    max-width: 1360px;
    margin-left: auto;
    margin-right: auto;
    min-height: calc(100vh - 72px);
}

.auth-wrapper {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    padding: 32px;
}

.auth-box {
    width: 100%;
    max-width: 420px;
}

.auth-box h1 {
    margin-bottom: 10px;
    font-size: 30px;
}

.auth-box p {
    color: var(--text-secondary);
    margin-bottom: 28px;
}

/* ── Form Elements ── */
.form-group {
    margin-bottom: 20px;
    position: relative;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-size: 12px;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.form-control {
    width: 100%;
    padding: 14px 18px;
    background: rgba(0, 0, 0, 0.03);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-family: var(--font);
    font-size: 15px;
    outline: none;
    transition: var(--transition);
    backdrop-filter: blur(8px);
}

[data-theme="dark"] .form-control {
    background: rgba(255, 255, 255, 0.04);
}

[data-theme="dark"] select option {
    background: #131842;
    color: #e2e8f0;
}

.form-control::placeholder {
    color: var(--text-tertiary);
}

.form-control:focus {
    border-color: var(--accent);
    background: var(--glass-bg);
    box-shadow: 0 0 0 3px var(--accent-soft);
}

select.form-control {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='rgba(29,29,46,0.4)' viewBox='0 0 16 16'%3E%3Cpath d='M8 11L3 6h10l-5 5z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 16px center;
    padding-right: 40px;
}

.alert {
    padding: 14px 18px;
    border-radius: var(--radius-md);
    margin-bottom: 20px;
    font-size: 13px;
    font-weight: 600;
    display: none;
    border: 1px solid transparent;
}

.alert-error {
    color: var(--danger);
    background: var(--danger-soft);
    border-color: rgba(255, 59, 48, 0.15);
    display: block;
}

/* ── Tables ── */
.table-container {
    overflow-x: auto;
    border-radius: var(--radius-xl);
}

.next-table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
}

.next-table th,
.next-table td {
    padding: 16px 20px;
    text-align: left;
    border-bottom: 1px solid color-mix(in srgb, var(--text-primary) 6%, transparent);
}

.next-table th {
    color: var(--text-secondary);
    font-weight: 600;
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 1.2px;
}

.next-table tbody tr {
    transition: var(--transition-fast);
}

.next-table tbody tr:hover {
    background: var(--accent-soft);
}

/* ── Badges ── */
.badge {
    padding: 5px 14px;
    border-radius: var(--radius-pill);
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    display: inline-block;
    border: 1px solid transparent;
}

.badge.parked {
    color: var(--warning);
    background: var(--warning-soft);
    border-color: rgba(255, 159, 10, 0.18);
}

.badge.flying {
    color: var(--success);
    background: var(--success-soft);
    border-color: rgba(48, 209, 88, 0.18);
}

.badge.maintenance {
    color: var(--danger);
    background: var(--danger-soft);
    border-color: rgba(255, 59, 48, 0.18);
}

/* ── Grid ── */
.grid-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.grid-4 {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

/* ── Stat Cards ── */
.stat-card {
    display: flex;
    flex-direction: column;
    gap: 8px;
    text-align: center;
}

.stat-card .label {
    font-size: 12px;
    color: var(--text-secondary);
    font-weight: 600;
    text-transform: uppercase;
}

.stat-card .value {
    font-size: 28px;
    font-weight: 700;
    color: var(--text-primary);
}

.dashboard-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    margin-bottom: 32px;
}

.dashboard-header h1 {
    font-size: 34px;
    margin-bottom: 6px;
}

/* ── Animations ── */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(12px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate-fade-in {
    animation: fadeIn 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94) forwards;
}

.animate-scale-in {
    animation: fadeInScale 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94) forwards;
}

/* ── Theme init for other pages ── */
@media (max-width: 1024px) {
    .grid-3 {
        grid-template-columns: 1fr 1fr;
    }

    .grid-4 {
        grid-template-columns: repeat(2, 1fr);
    }

    main {
        padding: 40px 20px;
    }
}

@media (max-width: 768px) {

    .grid-2,
    .grid-3,
    .grid-4 {
        grid-template-columns: 1fr;
    }

    .dashboard-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 16px;
    }

    main {
        padding: 32px 16px;
    }

    header {
        padding: 0 16px;
        height: 64px;
    }
}