:root {
    --color-bg: #f4f5f9;
    --color-surface: #ffffff;
    --color-surface-hover: #f8fafc;
    --color-border: #e4e7ec;
    --color-text: #131a29;
    --color-muted: #667085;
    --color-primary: #4f46e5;
    --color-primary-dark: #4338ca;
    --color-primary-soft: #eef2ff;
    --color-on-primary: #ffffff;
    --color-danger: #dc2626;
    --color-danger-bg: #fef2f2;
    --color-danger-text: #991b1b;
    --color-warning: #d97706;
    --color-warning-bg: #fffbeb;
    --color-warning-text: #92400e;
    --color-success: #16a34a;
    --color-success-bg: #f0fdf4;
    --color-success-text: #166534;
    --radius: 12px;
    --radius-sm: 8px;
    --shadow-sm: 0 1px 2px rgba(16, 24, 40, 0.06), 0 1px 3px rgba(16, 24, 40, 0.06);
    --shadow-md: 0 4px 10px rgba(16, 24, 40, 0.08), 0 2px 4px rgba(16, 24, 40, 0.06);
    --sidebar-width: 240px;
}

[data-theme="taxi"] {
    --color-bg: #fdf9ec;
    --color-surface: #ffffff;
    --color-surface-hover: #fff7e0;
    --color-border: #efdfa4;
    --color-text: #191204;
    --color-muted: #7a6d47;
    --color-primary: #f2b705;
    --color-primary-dark: #191204;
    --color-primary-soft: #fff3c4;
    --color-on-primary: #191204;
    --color-danger: #dc2626;
    --color-danger-bg: #fee2e2;
    --color-danger-text: #991b1b;
    --color-warning: #b45309;
    --color-warning-bg: #fef3c7;
    --color-warning-text: #7c3a05;
    --color-success: #16a34a;
    --color-success-bg: #dcfce7;
    --color-success-text: #166534;
}

* { box-sizing: border-box; }

html, body { height: 100%; }

body {
    margin: 0;
    font-family: -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
    background: var(--color-bg);
    color: var(--color-text);
    -webkit-font-smoothing: antialiased;
}

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

h1 { font-size: 1.5rem; font-weight: 700; margin: 0 0 1.1rem; letter-spacing: -0.01em; }
h2 { font-size: 1.05rem; font-weight: 600; margin: 1.75rem 0 0.85rem; color: var(--color-text); }

/* ---------- App shell (sidebar layout) ---------- */

.app-shell {
    display: flex;
    min-height: 100vh;
}

.sidebar {
    width: min(var(--sidebar-width), 82vw);
    flex-shrink: 0;
    background: var(--color-surface);
    border-right: 1px solid var(--color-border);
    display: flex;
    flex-direction: column;
    position: sticky;
    top: 0;
    height: 100vh;
    z-index: 40;
}

.sidebar-brand {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    padding: 1.25rem 1.25rem 1rem;
    font-weight: 700;
    font-size: 1.05rem;
    letter-spacing: -0.01em;
    border-bottom: 1px solid var(--color-border);
    margin-bottom: 0.5rem;
}
.sidebar-brand-mark { font-size: 1.3rem; }
[data-theme="taxi"] .sidebar-brand {
    border-bottom: 3px solid transparent;
    border-image: repeating-linear-gradient(45deg, #f2b705 0 10px, #191204 10px 20px) 6;
}

.sidebar-nav { display: flex; flex-direction: column; gap: 0.15rem; padding: 0 0.75rem; flex: 1; }

.sidebar-link {
    display: flex;
    align-items: center;
    gap: 0.7rem;
    padding: 0.7rem 0.75rem;
    border-radius: var(--radius-sm);
    color: var(--color-muted);
    font-size: 0.92rem;
    font-weight: 500;
    min-height: 44px;
}
.sidebar-link:hover { background: var(--color-surface-hover); color: var(--color-text); text-decoration: none; }
.sidebar-link.active { background: var(--color-primary-soft); color: var(--color-primary-dark); }
.sidebar-icon { flex-shrink: 0; opacity: 0.85; }
.sidebar-link.active .sidebar-icon { opacity: 1; }

.sidebar-footer {
    padding: 0.9rem 0.75rem 1.1rem;
    border-top: 1px solid var(--color-border);
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}
.sidebar-theme-toggle {
    background: transparent;
    border: 1px solid var(--color-border);
    color: var(--color-text);
    padding: 0.45rem 0.7rem;
    border-radius: var(--radius-sm);
    font-size: 0.82rem;
    cursor: pointer;
    text-align: left;
}
.sidebar-theme-toggle:hover { background: var(--color-surface-hover); }
.sidebar-logout {
    padding: 0.45rem 0.7rem;
    font-size: 0.82rem;
    color: var(--color-danger);
    border-radius: var(--radius-sm);
}
.sidebar-logout:hover { background: var(--color-danger-bg); text-decoration: none; }

.sidebar-backdrop {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(15, 23, 42, 0.45);
    z-index: 30;
}
.sidebar-backdrop.visible { display: block; }

.main { flex: 1; min-width: 0; display: flex; flex-direction: column; }

.topbar {
    display: none;
    align-items: center;
    gap: 0.85rem;
    padding: 0.85rem 1.1rem;
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    position: sticky;
    top: 0;
    z-index: 20;
}
.sidebar-toggle {
    background: transparent;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    width: 42px;
    height: 42px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: var(--color-text);
    flex-shrink: 0;
}
.sidebar-toggle:hover { background: var(--color-surface-hover); }
.topbar-brand { font-weight: 700; }

.content { padding: 1.75rem 2rem; max-width: 1200px; width: 100%; margin: 0 auto; }
.content-auth {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1.5rem;
    background:
        radial-gradient(circle at 15% 20%, var(--color-primary-soft) 0%, transparent 45%),
        var(--color-bg);
}

@media (max-width: 900px) {
    .sidebar {
        position: fixed;
        left: 0;
        top: 0;
        transform: translateX(-100%);
        transition: transform 0.2s ease;
        box-shadow: var(--shadow-md);
    }
    .sidebar.open { transform: translateX(0); }
    .topbar { display: flex; }
    .content { padding: 1.25rem; }
}

/* ---------- Auth screen ---------- */

.auth-box {
    width: 100%;
    max-width: 380px;
    background: var(--color-surface);
    padding: 2.25rem 2rem;
    border-radius: var(--radius);
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-md);
}
.auth-box h1 { text-align: center; }

/* ---------- Forms ---------- */

.form { display: flex; flex-direction: column; gap: 1rem; }
.form label { display: flex; flex-direction: column; gap: 0.35rem; font-size: 0.85rem; font-weight: 600; color: var(--color-muted); }
.form input, .form select, .form textarea {
    font-size: 1rem;
    padding: 0.6rem 0.7rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-family: inherit;
    color: var(--color-text);
    background: var(--color-surface);
    transition: border-color 0.15s ease, box-shadow 0.15s ease;
}
.form input:focus, .form select:focus, .form textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-soft);
}
.form textarea { resize: vertical; min-height: 4rem; }
.form-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 1rem 1.2rem; }
.form-actions { display: flex; gap: 0.75rem; margin-top: 0.5rem; }

/* ---------- Buttons ---------- */

button, .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.4rem;
    background: var(--color-primary);
    color: var(--color-on-primary);
    border: none;
    padding: 0.6rem 1.15rem;
    min-height: 40px;
    border-radius: var(--radius-sm);
    font-size: 0.92rem;
    font-weight: 600;
    font-family: inherit;
    cursor: pointer;
    box-shadow: var(--shadow-sm);
    transition: background 0.15s ease, transform 0.1s ease, box-shadow 0.15s ease;
}
button:hover, .btn:hover { background: var(--color-primary-dark); color: var(--color-on-primary); text-decoration: none; box-shadow: var(--shadow-md); transform: translateY(-1px); }
button:active, .btn:active { transform: translateY(0); }
.btn-secondary { background: var(--color-surface); color: var(--color-text); border: 1px solid var(--color-border); }
.btn-secondary:hover { background: var(--color-surface-hover); color: var(--color-text); }
.btn-danger { background: var(--color-danger); color: #fff; }
.btn-danger:hover { background: #b91c1c; color: #fff; }
.btn-sm { padding: 0.35rem 0.75rem; font-size: 0.82rem; }

/* ---------- Flash messages ---------- */

.flash-messages { margin-bottom: 1.25rem; display: flex; flex-direction: column; gap: 0.5rem; }
.flash {
    padding: 0.75rem 1rem;
    border-radius: var(--radius-sm);
    border-left: 4px solid transparent;
    font-size: 0.9rem;
}
.flash-success { background: var(--color-success-bg); color: var(--color-success-text); border-left-color: var(--color-success); }
.flash-error { background: var(--color-danger-bg); color: var(--color-danger-text); border-left-color: var(--color-danger); }

/* ---------- Stat cards ---------- */

.stat-cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(170px, 1fr)); gap: 1rem; margin-bottom: 1.75rem; }
.stat-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 1.1rem 1.25rem;
    box-shadow: var(--shadow-sm);
    border-top: 3px solid var(--color-primary);
}
.stat-number { font-size: 1.9rem; font-weight: 700; letter-spacing: -0.02em; }
.stat-label { color: var(--color-muted); font-size: 0.83rem; margin-top: 0.15rem; }
.stat-card-warning { border-top-color: var(--color-warning); }
.stat-card-warning .stat-number { color: var(--color-warning); }
.stat-card-danger { border-top-color: var(--color-danger); }
.stat-card-danger .stat-number { color: var(--color-danger); }

/* ---------- Tables ---------- */

.table-responsive {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
    margin-bottom: 0.5rem;
}
.table-responsive .data-table { box-shadow: none; border-radius: 0; }

.data-table {
    width: 100%;
    min-width: 640px;
    border-collapse: collapse;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}
.data-table th, .data-table td { padding: 0.7rem 0.9rem; border-bottom: 1px solid var(--color-border); text-align: left; font-size: 0.88rem; }
.data-table th { background: var(--color-surface-hover); color: var(--color-muted); font-weight: 600; font-size: 0.76rem; text-transform: uppercase; letter-spacing: 0.04em; }
.data-table tbody tr:hover { background: var(--color-surface-hover); }
.data-table tr:last-child td { border-bottom: none; }
.data-table tr.row-overdue { background: var(--color-danger-bg); }
.data-table tr.row-upcoming { background: var(--color-warning-bg); }
.data-table tr.row-overdue:hover, .data-table tr.row-upcoming:hover { filter: brightness(0.98); }

/* ---------- Badges ---------- */

.badge { padding: 0.2rem 0.6rem; border-radius: 999px; font-size: 0.75rem; font-weight: 600; display: inline-block; }
.badge-overdue { background: var(--color-danger-bg); color: var(--color-danger-text); }
.badge-upcoming { background: var(--color-warning-bg); color: var(--color-warning-text); }
.badge-ok { background: var(--color-success-bg); color: var(--color-success-text); }

/* ---------- Toolbar ---------- */

.toolbar { display: flex; gap: 0.6rem; flex-wrap: wrap; align-items: center; margin-bottom: 1.1rem; }
.toolbar input, .toolbar select {
    padding: 0.55rem 0.7rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-family: inherit;
    font-size: 1rem;
    background: var(--color-surface);
    flex: 1 1 180px;
    min-width: 0;
}
.toolbar input:focus, .toolbar select:focus { outline: none; border-color: var(--color-primary); box-shadow: 0 0 0 3px var(--color-primary-soft); }
.toolbar-spacer { flex: 1; }
.toolbar button, .toolbar .btn { flex: 0 0 auto; }

@media (max-width: 480px) {
    .toolbar input, .toolbar select { flex: 1 1 100%; }
}

/* ---------- Detail view ---------- */

.detail-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 0.9rem 2rem;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 1.3rem 1.4rem;
    margin-bottom: 1.5rem;
    box-shadow: var(--shadow-sm);
}
.detail-grid dt { color: var(--color-muted); font-size: 0.74rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.04em; margin-top: 0.5rem; }
.detail-grid dd { margin: 0.15rem 0 0; font-size: 0.98rem; }

.empty-state { color: var(--color-muted); font-style: italic; padding: 0.5rem 0; }

.card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 1.3rem 1.4rem;
    margin-bottom: 1.5rem;
    box-shadow: var(--shadow-sm);
}

.doc-list { list-style: none; padding: 0; margin: 0; }
.doc-list li { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 0.5rem 1rem; padding: 0.65rem 0; border-bottom: 1px solid var(--color-border); }
.doc-list li:last-child { border-bottom: none; }

@media (max-width: 640px) {
    .content { padding: 1rem; }
    .stat-cards { grid-template-columns: repeat(2, 1fr); }
}