:root {
    /* Apple-like sleek palette */
    --primary-color: #000000; /* Sleek Black */
    --secondary-color: #ffffff; /* White for hero/footer */
    --input-bg: #f5f5f7; /* Very light gray for inputs */
    --accent-color: #007aff; /* Apple Blue for links/highlights */
    --text-color: #1d1d1f; /* Almost black */
    --text-muted: #86868b;
    --bg-color: #f5f5f7; /* Gray background for body */
    --card-bg: #ffffff; /* Pure white cards */
    --border-color: #e5e5ea;
    --radius-lg: 18px;
    --radius-md: 12px;
}

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    letter-spacing: -0.01em;
}

h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    letter-spacing: -0.02em;
}

/* Glassmorphism Navbar */
.taxi-nav {
    background-color: rgba(255, 255, 255, 0.8) !important;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(0,0,0,0.05);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.taxi-nav .navbar-brand {
    color: var(--text-color) !important;
    font-weight: 700;
    font-size: 1.4rem;
    letter-spacing: -0.03em;
}

.taxi-nav .nav-link {
    color: var(--text-color) !important;
    font-weight: 500;
    font-size: 0.95rem;
    padding: 0.5rem 1rem !important;
    border-radius: var(--radius-md);
    transition: background-color 0.2s ease;
}

.taxi-nav .nav-link:hover {
    background-color: rgba(0,0,0,0.05);
    color: var(--text-color) !important;
}

/* Premium Buttons */
.btn-primary {
    background-color: var(--primary-color);
    color: #ffffff;
    border: none;
    border-radius: 999px; /* Pill shape */
    padding: 12px 24px;
    font-weight: 600;
    font-size: 1rem;
    transition: transform 0.2s cubic-bezier(0.2, 0, 0, 1), background-color 0.2s;
}

.btn-primary:hover, .btn-primary:focus {
    background-color: #333333;
    color: #ffffff;
    transform: scale(0.98);
}

.btn-outline-primary {
    border: 2px solid var(--border-color);
    color: var(--text-color);
    border-radius: var(--radius-md);
    background: transparent;
    font-weight: 500;
}

.btn-outline-primary:hover {
    border-color: var(--text-color);
    background-color: transparent;
    color: var(--text-color);
}

/* Custom Trip Buttons (used in book.php) */
.trip-btn {
    border: 1px solid var(--border-color) !important;
    color: var(--text-color) !important;
    background: var(--bg-color) !important;
    border-radius: var(--radius-lg) !important;
    padding: 20px !important;
    font-size: 1.1rem !important;
    font-weight: 600 !important;
    box-shadow: 0 2px 10px rgba(0,0,0,0.02) !important;
    transition: all 0.3s cubic-bezier(0.2, 0, 0, 1) !important;
}

.trip-btn.active {
    background-color: var(--primary-color) !important;
    color: #ffffff !important;
    border-color: var(--primary-color) !important;
    transform: scale(1.02) !important;
    box-shadow: 0 8px 20px rgba(0,0,0,0.15) !important;
}

/* Hero Section */
.hero-section {
    background: var(--secondary-color);
    color: var(--text-color);
    padding: 120px 0;
    text-align: center;
    border-bottom: 1px solid var(--border-color);
}

.hero-section h1 {
    font-size: 4rem;
    font-weight: 700;
    color: var(--text-color);
    margin-bottom: 20px;
    letter-spacing: -0.04em;
}

.hero-section p.lead {
    color: var(--text-muted);
    font-weight: 400;
    font-size: 1.5rem;
    max-width: 600px;
    margin: 0 auto;
}

/* Cards */
.card {
    background: var(--card-bg);
    border: 1px solid rgba(0,0,0,0.06);
    border-radius: var(--radius-lg);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.08);
    padding: 2rem !important;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

/* Form Elements */
.form-control, .form-select {
    background-color: var(--input-bg);
    border: 1px solid transparent;
    border-radius: var(--radius-md);
    padding: 14px 16px;
    font-size: 1rem;
    color: var(--text-color);
    transition: all 0.2s ease;
}

.form-control:focus, .form-select:focus {
    background-color: #ffffff;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 4px rgba(0, 122, 255, 0.15);
    outline: none;
}

.form-label {
    font-weight: 500;
    color: var(--text-color);
    margin-bottom: 8px;
    font-size: 0.95rem;
}

/* Footer */
footer {
    background-color: var(--secondary-color);
    color: var(--text-muted);
    margin-top: auto;
    padding: 3rem 0;
    text-align: center;
    border-top: 1px solid var(--border-color);
    font-size: 0.9rem;
}

/* Badges */
.status-badge {
    padding: 0.4em 1em;
    border-radius: 999px;
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.02em;
    text-transform: uppercase;
}

.status-pending { background-color: #f5f5f7; color: var(--text-muted); }
.status-accepted { background-color: #e5f5e5; color: #108226; }
.status-denied { background-color: #ffebf0; color: #d90036; }

/* Table styling */
.table {
    border-collapse: separate;
    border-spacing: 0 8px;
}
.table thead th {
    border-bottom: none;
    color: var(--text-muted);
    font-weight: 500;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: 0 16px 8px 16px;
}
.table tbody tr {
    background: #ffffff;
    box-shadow: 0 2px 8px rgba(0,0,0,0.03);
    border-radius: var(--radius-md);
}
.table tbody td {
    border: none;
    padding: 16px;
    vertical-align: middle;
}
.table tbody td:first-child { border-top-left-radius: var(--radius-md); border-bottom-left-radius: var(--radius-md); }
.table tbody td:last-child { border-top-right-radius: var(--radius-md); border-bottom-right-radius: var(--radius-md); }

/* Links */
a {
    color: var(--accent-color);
    text-decoration: none;
}
a:hover {
    text-decoration: underline;
}

/* Modals */
.modal-content {
    border: none;
    border-radius: 24px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.15);
}
.modal-header {
    border-bottom: 1px solid rgba(0,0,0,0.05);
    padding: 20px 24px;
}
.modal-title {
    font-weight: 600;
}
.modal-body {
    padding: 24px;
}
.modal-footer {
    border-top: 1px solid rgba(0,0,0,0.05);
    padding: 16px 24px;
}