/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #2c5f8d;
    --secondary-color: #f4a261;
    --accent-color: #e76f51;
    --text-dark: #2d3748;
    --text-light: #718096;
    --bg-light: #f7fafc;
    --white: #ffffff;
    --border-color: #e2e8f0;
    --success: #48bb78;
    --danger: #f56565;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.15);
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    color: var(--text-dark);
    line-height: 1.6;
    background-color: var(--bg-light);
}

/* Header */
header {
    background: linear-gradient(135deg, var(--primary-color), #1a3a52);
    color: var(--white);
    padding: 1.5rem 0;
    box-shadow: var(--shadow);
}

.header-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

header h1 {
    font-size: 2rem;
    font-weight: 600;
}

nav a {
    color: var(--white);
    text-decoration: none;
    margin-left: 2rem;
    transition: color 0.3s;
}

nav a:hover {
    color: var(--secondary-color);
}

/* Hero Section */
.hero {
    background: linear-gradient(rgba(44, 95, 141, 0.8), rgba(44, 95, 141, 0.8)), 
                url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1200 400"><rect fill="%232c5f8d" width="1200" height="400"/><path fill="%231a3a52" d="M0 200 Q300 100 600 200 T1200 200 V400 H0 Z"/></svg>');
    background-size: cover;
    background-position: center;
    color: var(--white);
    text-align: center;
    padding: 5rem 2rem;
}

.hero h2 {
    font-size: 3rem;
    margin-bottom: 1rem;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.hero p {
    font-size: 1.3rem;
    margin-bottom: 2rem;
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 3rem 2rem;
}

/* Room Cards */
.rooms-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.room-card {
    background: var(--white);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: transform 0.3s, box-shadow 0.3s;
}

.room-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.room-image {
    width: 100%;
    height: 250px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 3rem;
    position: relative;
    overflow: hidden;
}

.room-image::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, rgba(44,95,141,0.1) 25%, transparent 25%, transparent 75%, rgba(44,95,141,0.1) 75%, rgba(44,95,141,0.1)),
                linear-gradient(45deg, rgba(44,95,141,0.1) 25%, transparent 25%, transparent 75%, rgba(44,95,141,0.1) 75%, rgba(44,95,141,0.1));
    background-size: 20px 20px;
    background-position: 0 0, 10px 10px;
    opacity: 0.3;
}

.room-content {
    padding: 1.5rem;
}

.room-content h3 {
    color: var(--primary-color);
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.room-price {
    color: var(--accent-color);
    font-size: 1.8rem;
    font-weight: bold;
    margin: 1rem 0;
}

.room-price span {
    font-size: 1rem;
    color: var(--text-light);
    font-weight: normal;
}

.amenities {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin: 1rem 0;
}

.amenity-tag {
    background: var(--bg-light);
    color: var(--text-dark);
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
    font-size: 0.85rem;
    border: 1px solid var(--border-color);
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.8rem 2rem;
    border-radius: 6px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s;
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

.btn-primary {
    background: var(--primary-color);
    color: var(--white);
}

.btn-primary:hover {
    background: #1a3a52;
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

.btn-secondary {
    background: var(--secondary-color);
    color: var(--white);
}

.btn-secondary:hover {
    background: #e38e3f;
}

.btn-danger {
    background: var(--danger);
    color: var(--white);
}

.btn-success {
    background: var(--success);
    color: var(--white);
}

.btn-block {
    display: block;
    width: 100%;
    text-align: center;
}

/* Forms */
.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--text-dark);
}

.form-control {
    width: 100%;
    padding: 0.8rem;
    border: 2px solid var(--border-color);
    border-radius: 6px;
    font-size: 1rem;
    transition: border-color 0.3s;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-color);
}

textarea.form-control {
    resize: vertical;
    min-height: 100px;
}

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1rem;
}

/* Booking Summary */
.booking-summary {
    background: var(--white);
    padding: 2rem;
    border-radius: 12px;
    box-shadow: var(--shadow);
    margin-top: 2rem;
}

.booking-summary h3 {
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.summary-row {
    display: flex;
    justify-content: space-between;
    padding: 0.8rem 0;
    border-bottom: 1px solid var(--border-color);
}

.summary-row:last-child {
    border-bottom: none;
    font-weight: bold;
    font-size: 1.2rem;
    color: var(--primary-color);
}

/* Alerts */
.alert {
    padding: 1rem 1.5rem;
    border-radius: 6px;
    margin-bottom: 1.5rem;
}

.alert-success {
    background: #c6f6d5;
    color: #22543d;
    border-left: 4px solid var(--success);
}

.alert-error {
    background: #fed7d7;
    color: #742a2a;
    border-left: 4px solid var(--danger);
}

.alert-info {
    background: #bee3f8;
    color: #2c5282;
    border-left: 4px solid var(--primary-color);
}

/* Room Details Page */
.room-details {
    background: var(--white);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow);
}

.room-header {
    background: linear-gradient(135deg, var(--primary-color), #1a3a52);
    color: var(--white);
    padding: 2rem;
}

.room-body {
    padding: 2rem;
}

.room-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    margin: 2rem 0;
}

.info-box {
    background: var(--bg-light);
    padding: 1.5rem;
    border-radius: 8px;
    text-align: center;
}

.info-box h4 {
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

/* Admin Panel */
.admin-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 2rem;
}

.admin-header {
    background: var(--white);
    padding: 1.5rem;
    border-radius: 12px;
    margin-bottom: 2rem;
    box-shadow: var(--shadow);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.stat-card {
    background: var(--white);
    padding: 1.5rem;
    border-radius: 12px;
    box-shadow: var(--shadow);
}

.stat-card h3 {
    color: var(--text-light);
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
}

.stat-card .stat-value {
    font-size: 2rem;
    font-weight: bold;
    color: var(--primary-color);
}

/* Table */
.table-container {
    background: var(--white);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow);
}

table {
    width: 100%;
    border-collapse: collapse;
}

thead {
    background: var(--primary-color);
    color: var(--white);
}

th, td {
    padding: 1rem;
    text-align: left;
}

tbody tr {
    border-bottom: 1px solid var(--border-color);
    transition: background-color 0.2s;
}

tbody tr:hover {
    background-color: var(--bg-light);
}

.status-badge {
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
}

.status-pending {
    background: #fef5e7;
    color: #d68910;
}

.status-confirmed {
    background: #d5f5e3;
    color: #1e8449;
}

.status-cancelled {
    background: #fadbd8;
    color: #a93226;
}

/* Login Page */
.login-container {
    max-width: 400px;
    margin: 5rem auto;
    padding: 2rem;
}

.login-box {
    background: var(--white);
    padding: 2.5rem;
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
}

.login-box h2 {
    color: var(--primary-color);
    text-align: center;
    margin-bottom: 2rem;
}

/* Footer */
footer {
    background: var(--text-dark);
    color: var(--white);
    text-align: center;
    padding: 2rem;
    margin-top: 4rem;
}

/* Responsive */
@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        text-align: center;
    }
    
    nav {
        margin-top: 1rem;
    }
    
    nav a {
        margin: 0 1rem;
    }
    
    .hero h2 {
        font-size: 2rem;
    }
    
    .rooms-grid {
        grid-template-columns: 1fr;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
}

/* Loading Spinner */
.spinner {
    border: 4px solid var(--border-color);
    border-top: 4px solid var(--primary-color);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    animation: spin 1s linear infinite;
    margin: 2rem auto;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}