:root {
    --primary: #111827;
    --secondary: #F3F4F6;
    --accent: #10B981;
    --text-main: #1f2937;
    --text-muted: #6b7280;
    --bg-main: #FAFAFA;
    --card-bg: #FFFFFF;
    --border-radius: 20px;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.05);
    --shadow-md: 0 10px 25px rgba(0,0,0,0.05);
    --shadow-lg: 0 20px 40px rgba(0,0,0,0.08);
}
body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-main);
    color: var(--text-main);
    margin: 0;
    padding: 0;
    line-height: 1.6;
}
* { box-sizing: border-box; }
a { text-decoration: none; color: inherit; }

/* Layout */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}
.header {
    background: var(--card-bg);
    padding: 20px 0;
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 100;
}
.header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.logo {
    font-size: 24px;
    font-weight: 700;
    color: var(--primary);
}
.nav-links {
    display: flex;
    gap: 20px;
}
.nav-links a {
    font-weight: 500;
    color: var(--text-main);
    transition: color 0.2s;
}
.nav-links a:hover {
    color: var(--accent);
}

/* Button */
.btn {
    display: inline-block;
    background: var(--primary);
    color: #fff !important;
    padding: 12px 24px;
    border-radius: 30px;
    font-weight: 600;
    border: none;
    cursor: pointer;
    transition: transform 0.2s, background 0.2s;
}
.btn:hover {
    transform: translateY(-2px);
    background: #000;
}

/* Hero */
.hero {
    text-align: center;
    padding: 100px 20px;
}
.hero h1 {
    font-size: 48px;
    margin-bottom: 20px;
    letter-spacing: -1px;
}
.hero p {
    font-size: 18px;
    color: var(--text-muted);
    max-width: 600px;
    margin: 0 auto 40px;
}

/* Cards */
.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 40px;
}
.card {
    background: var(--card-bg);
    border-radius: var(--border-radius);
    padding: 30px;
    box-shadow: var(--shadow-md);
    transition: transform 0.3s, box-shadow 0.3s;
}
.card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

/* Booking Widget */
.booking-widget {
    background: var(--card-bg);
    border-radius: var(--border-radius);
    padding: 40px;
    box-shadow: var(--shadow-lg);
    max-width: 800px;
    margin: 40px auto;
}
.step {
    display: none;
    animation: fadeIn 0.3s ease-in;
}
.step.active {
    display: block;
}
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.selectable-item {
    padding: 15px;
    border: 2px solid var(--secondary);
    border-radius: 15px;
    margin-bottom: 15px;
    cursor: pointer;
    transition: all 0.2s;
}
.selectable-item:hover, .selectable-item.selected {
    border-color: var(--primary);
    background: var(--secondary);
}

.time-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(80px, 1fr));
    gap: 10px;
}
.time-slot {
    padding: 10px;
    text-align: center;
    border: 1px solid var(--secondary);
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.2s;
}
.time-slot:hover, .time-slot.selected {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
}

.form-group {
    margin-bottom: 20px;
}
.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
}
.form-control {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--secondary);
    border-radius: 10px;
    font-family: inherit;
    font-size: 16px;
    outline: none;
}
.form-control:focus {
    border-color: var(--primary);
}

/* Admin Specific */
.admin-layout {
    display: flex;
    min-height: 100vh;
}
.admin-sidebar {
    width: 250px;
    background: var(--primary);
    color: #fff;
    padding: 20px;
}
.admin-sidebar a {
    display: block;
    padding: 10px;
    color: #D1D5DB;
    margin-bottom: 5px;
    border-radius: 8px;
}
.admin-sidebar a:hover {
    background: rgba(255,255,255,0.1);
    color: #fff;
}
.admin-content {
    flex: 1;
    padding: 40px;
    background: var(--bg-main);
}
.admin-table {
    width: 100%;
    border-collapse: collapse;
    background: #fff;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}
.admin-table th, .admin-table td {
    padding: 15px;
    text-align: left;
    border-bottom: 1px solid var(--secondary);
}
.admin-table tr:hover {
    background: var(--bg-main);
}