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

:root {
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #818cf8;
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --info: #3b82f6;

    --bg-body: #f1f5f9;
    --bg-card: #ffffff;
    --bg-sidebar: #1e293b;
    --bg-sidebar-hover: #334155;
    --text-primary: #0f172a;
    --text-secondary: #64748b;
    --text-muted: #94a3b8;
    --border: #e2e8f0;
    --shadow: 0 1px 3px rgba(0,0,0,.08), 0 4px 12px rgba(0,0,0,.04);
    --shadow-lg: 0 10px 40px rgba(0,0,0,.12);
    --radius: 12px;
    --radius-sm: 8px;
    --radius-full: 9999px;
    --sidebar-width: 260px;
    --header-height: 64px;
    --transition: all .25s cubic-bezier(.4,0,.2,1);
}

[data-theme="dark"] {
    --bg-body: #0f172a;
    --bg-card: #1e293b;
    --bg-sidebar: #0f172a;
    --bg-sidebar-hover: #1e293b;
    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --border: #334155;
    --shadow: 0 1px 3px rgba(0,0,0,.3), 0 4px 12px rgba(0,0,0,.2);
}

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

html { font-size: 15px; scroll-behavior: smooth; }

body {
    font-family: 'Inter', system-ui, sans-serif;
    background: var(--bg-body);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    transition: var(--transition);
}

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

/* Layout */
.app-wrapper { display: flex; min-height: 100vh; }

.sidebar {
    width: var(--sidebar-width);
    background: var(--bg-sidebar);
    color: #e2e8f0;
    position: fixed;
    top: 0; left: 0; bottom: 0;
    z-index: 100;
    display: flex;
    flex-direction: column;
    transition: var(--transition);
    overflow-y: auto;
}

.sidebar-brand {
    padding: 1.25rem 1.5rem;
    display: flex;
    align-items: center;
    gap: .75rem;
    border-bottom: 1px solid rgba(255,255,255,.08);
}

.sidebar-brand .logo {
    width: 40px; height: 40px;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    border-radius: var(--radius-sm);
    display: flex; align-items: center; justify-content: center;
    font-size: 1.25rem;
}

.sidebar-brand h1 { font-size: 1.1rem; font-weight: 700; color: #fff; }

.sidebar-nav { flex: 1; padding: 1rem 0; }

.nav-section { padding: .5rem 1.25rem .25rem; font-size: .7rem; text-transform: uppercase; letter-spacing: .08em; color: #64748b; }

.nav-link {
    display: flex; align-items: center; gap: .75rem;
    padding: .65rem 1.25rem;
    color: #94a3b8;
    font-size: .9rem;
    font-weight: 500;
    transition: var(--transition);
    border-left: 3px solid transparent;
}

.nav-link:hover, .nav-link.active {
    background: var(--bg-sidebar-hover);
    color: #fff;
    border-left-color: var(--primary);
}

.nav-link i { width: 20px; text-align: center; font-size: 1rem; }

.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.topbar {
    height: var(--header-height);
    background: var(--bg-card);
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 1.5rem;
    position: sticky; top: 0; z-index: 50;
    box-shadow: var(--shadow);
}

.topbar-left { display: flex; align-items: center; gap: 1rem; }
.topbar-right { display: flex; align-items: center; gap: .75rem; }

.page-title { font-size: 1.25rem; font-weight: 600; }

.page-content { padding: 1.5rem; flex: 1; }

/* Cards */
.card {
    background: var(--bg-card);
    border-radius: var(--radius);
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.card:hover { box-shadow: var(--shadow-lg); }

.card-header {
    padding: 1rem 1.25rem;
    border-bottom: 1px solid var(--border);
    display: flex; align-items: center; justify-content: space-between;
}

.card-header h3 { font-size: 1rem; font-weight: 600; }
.card-body { padding: 1.25rem; }

/* Stats */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1.25rem;
    margin-bottom: 1.5rem;
}

.stat-card {
    background: var(--bg-card);
    border-radius: var(--radius);
    padding: 1.25rem;
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    animation: fadeInUp .4s ease both;
}

.stat-card .icon {
    width: 48px; height: 48px;
    border-radius: var(--radius-sm);
    display: flex; align-items: center; justify-content: center;
    font-size: 1.25rem;
    flex-shrink: 0;
}

.stat-card .icon.primary { background: rgba(99,102,241,.15); color: var(--primary); }
.stat-card .icon.success { background: rgba(16,185,129,.15); color: var(--success); }
.stat-card .icon.warning { background: rgba(245,158,11,.15); color: var(--warning); }
.stat-card .icon.danger  { background: rgba(239,68,68,.15); color: var(--danger); }
.stat-card .icon.info    { background: rgba(59,130,246,.15); color: var(--info); }

.stat-card .value { font-size: 1.5rem; font-weight: 700; line-height: 1.2; }
.stat-card .label { font-size: .85rem; color: var(--text-secondary); margin-top: .15rem; }

/* Buttons */
.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: .5rem;
    padding: .55rem 1.15rem;
    font-size: .875rem; font-weight: 500;
    border-radius: var(--radius-full);
    border: none; cursor: pointer;
    transition: var(--transition);
    font-family: inherit;
    white-space: nowrap;
}

.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); transform: translateY(-1px); }
.btn-success { background: var(--success); color: #fff; }
.btn-danger  { background: var(--danger); color: #fff; }
.btn-outline {
    background: transparent;
    border: 1.5px solid var(--border);
    color: var(--text-primary);
}
.btn-outline:hover { border-color: var(--primary); color: var(--primary); }
.btn-sm { padding: .35rem .85rem; font-size: .8rem; }
.btn-lg { padding: .75rem 1.5rem; font-size: 1rem; }
.btn-icon { width: 38px; height: 38px; padding: 0; border-radius: var(--radius-sm); }

/* Forms */
.form-group { margin-bottom: 1rem; }
.form-label { display: block; font-size: .85rem; font-weight: 500; margin-bottom: .35rem; color: var(--text-secondary); }
.form-control {
    width: 100%;
    padding: .6rem .85rem;
    border: 1.5px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--bg-card);
    color: var(--text-primary);
    font-family: inherit;
    font-size: .9rem;
    transition: var(--transition);
}
.form-control:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px rgba(99,102,241,.15); }
.form-row { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 1rem; }
select.form-control { cursor: pointer; }

/* Tables */
.table-wrapper { overflow-x: auto; border-radius: var(--radius-sm); }
table { width: 100%; border-collapse: collapse; }
thead th {
    background: var(--bg-body);
    padding: .75rem 1rem;
    text-align: left;
    font-size: .8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: .04em;
    color: var(--text-secondary);
    border-bottom: 2px solid var(--border);
}
tbody td { padding: .85rem 1rem; border-bottom: 1px solid var(--border); font-size: .9rem; }
tbody tr { transition: var(--transition); }
tbody tr:hover { background: rgba(99,102,241,.04); }

/* Badges */
.badge {
    display: inline-flex; align-items: center;
    padding: .2rem .65rem;
    border-radius: var(--radius-full);
    font-size: .75rem; font-weight: 600;
}
.badge-success { background: rgba(16,185,129,.15); color: var(--success); }
.badge-warning { background: rgba(245,158,11,.15); color: var(--warning); }
.badge-danger  { background: rgba(239,68,68,.15); color: var(--danger); }
.badge-info    { background: rgba(59,130,246,.15); color: var(--info); }
.badge-primary { background: rgba(99,102,241,.15); color: var(--primary); }

/* Alerts */
.alert {
    padding: .85rem 1.15rem;
    border-radius: var(--radius-sm);
    margin-bottom: 1rem;
    font-size: .9rem;
    display: flex; align-items: center; gap: .5rem;
    animation: fadeIn .3s ease;
}
.alert-success { background: rgba(16,185,129,.12); color: var(--success); border: 1px solid rgba(16,185,129,.25); }
.alert-error   { background: rgba(239,68,68,.12); color: var(--danger); border: 1px solid rgba(239,68,68,.25); }

/* Grid layouts */
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.25rem; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.25rem; }

/* Modal */
.modal-overlay {
    position: fixed; inset: 0;
    background: rgba(0,0,0,.5);
    display: none; align-items: center; justify-content: center;
    z-index: 200;
    backdrop-filter: blur(4px);
}
.modal-overlay.active { display: flex; }
.modal {
    background: var(--bg-card);
    border-radius: var(--radius);
    width: 90%; max-width: 520px;
    max-height: 90vh; overflow-y: auto;
    box-shadow: var(--shadow-lg);
    animation: scaleIn .25s ease;
}
.modal-header { padding: 1.25rem; border-bottom: 1px solid var(--border); display: flex; justify-content: space-between; align-items: center; }
.modal-body { padding: 1.25rem; }
.modal-footer { padding: 1rem 1.25rem; border-top: 1px solid var(--border); display: flex; gap: .5rem; justify-content: flex-end; }

/* Login */
.login-page {
    min-height: 100vh;
    display: flex; align-items: center; justify-content: center;
    background: linear-gradient(135deg, #1e293b 0%, #312e81 50%, #6366f1 100%);
    padding: 1rem;
}
.login-card {
    background: var(--bg-card);
    border-radius: var(--radius);
    padding: 2.5rem;
    width: 100%; max-width: 420px;
    box-shadow: var(--shadow-lg);
    animation: fadeInUp .5s ease;
}
.login-logo { text-align: center; margin-bottom: 2rem; }
.login-logo .icon { font-size: 3rem; color: var(--primary); }
.login-logo h2 { font-size: 1.5rem; margin-top: .5rem; }

/* Tables grid (restaurant) */
.tables-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: 1rem;
}
.table-card {
    aspect-ratio: 1;
    border-radius: var(--radius);
    display: flex; flex-direction: column;
    align-items: center; justify-content: center;
    cursor: pointer;
    transition: var(--transition);
    border: 2px solid var(--border);
    background: var(--bg-card);
}
.table-card.free { border-color: var(--success); background: rgba(16,185,129,.08); }
.table-card.occupied { border-color: var(--danger); background: rgba(239,68,68,.08); }
.table-card.reserved { border-color: var(--warning); background: rgba(245,158,11,.08); }
.table-card:hover { transform: scale(1.03); box-shadow: var(--shadow-lg); }
.table-card .number { font-size: 1.5rem; font-weight: 700; }
.table-card .capacity { font-size: .8rem; color: var(--text-secondary); }

/* Animations */
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
@keyframes fadeInUp { from { opacity: 0; transform: translateY(16px); } to { opacity: 1; transform: translateY(0); } }
@keyframes scaleIn { from { opacity: 0; transform: scale(.95); } to { opacity: 1; transform: scale(1); } }

/* Mobile sidebar toggle */
.sidebar-toggle { display: none; background: none; border: none; font-size: 1.25rem; color: var(--text-primary); cursor: pointer; }

/* Responsive */
@media (max-width: 1024px) {
    .grid-3 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
    .sidebar { transform: translateX(-100%); }
    .sidebar.open { transform: translateX(0); }
    .main-content { margin-left: 0; }
    .sidebar-toggle { display: flex; }
    .grid-2, .grid-3 { grid-template-columns: 1fr; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
    .page-content { padding: 1rem; }
}

@media (max-width: 480px) {
    .stats-grid { grid-template-columns: 1fr; }
}

/* Utility */
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-muted { color: var(--text-secondary); }
.text-success { color: var(--success); }
.text-danger { color: var(--danger); }
.mt-1 { margin-top: .5rem; }
.mt-2 { margin-top: 1rem; }
.mb-2 { margin-bottom: 1rem; }
.flex { display: flex; }
.flex-between { display: flex; justify-content: space-between; align-items: center; }
.gap-1 { gap: .5rem; }
.gap-2 { gap: 1rem; }
.empty-state { text-align: center; padding: 3rem; color: var(--text-muted); }
.empty-state i { font-size: 3rem; margin-bottom: 1rem; display: block; }