:root {
    --primary: #A87C4F; /* Warm Gold */
    --secondary: #5A4B40; /* Dark Brown */
    --accent: #D4AF37; /* Brighter Gold */
    --bg: #F8F4E3; /* Light Cream */
    --surface: #FFFFFF; /* White */
    --text: #333333; /* Dark Grey */
    --muted: #666666; /* Medium Grey */
    --radius: 8px;
    --shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    --shadow-hover: 0 8px 20px rgba(0, 0, 0, 0.15);
}

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

body {
    font-family: 'Roboto', sans-serif;
    color: var(--text);
    background-color: var(--bg);
    line-height: 1.6;
    font-size: clamp(1rem, 0.9rem + 0.5vw, 1.125rem);
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Playfair Display', serif;
    color: var(--secondary);
    margin-bottom: 0.8em;
    line-height: 1.2;
}

h1 {
    font-size: clamp(2.5rem, 1.5rem + 4vw, 4rem);
}

h2 {
    font-size: clamp(2rem, 1.3rem + 3vw, 3rem);
    text-align: center;
    margin-bottom: 1.5em;
}

a {
    color: var(--primary);
    text-decoration: none;
    transition: color 0.3s ease;
}

a:hover {
    color: var(--accent);
}

button, .btn {
    display: inline-block;
    padding: 12px 24px;
    border-radius: var(--radius);
    font-size: 1rem;
    cursor: pointer;
    text-align: center;
    transition: all 0.3s ease;
    border: none;
}

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

.btn-primary:hover {
    background-color: var(--accent);
    transform: translateY(-2px);
    box-shadow: var(--shadow-hover);
}

.btn-primary:active {
    transform: scale(0.97);
}

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

.btn-secondary:hover {
    background-color: #4A3B30;
    transform: translateY(-2px);
    box-shadow: var(--shadow-hover);
}

.btn-outline {
    background-color: transparent;
    color: var(--primary);
    border: 1px solid var(--primary);
}

.btn-outline:hover {
    background-color: var(--primary);
    color: var(--surface);
    transform: translateY(-2px);
    box-shadow: var(--shadow-hover);
}

button:focus-visible, .btn:focus-visible, input:focus-visible, select:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

/* Header */
.main-header {
    background-color: var(--surface);
    padding: 15px 0;
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.main-header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-family: 'Playfair Display', serif;
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--secondary);
}

.main-nav .nav-list {
    list-style: none;
    display: flex;
    gap: 25px;
}

.main-nav .nav-list a {
    color: var(--text);
    font-weight: 400;
    padding: 5px 0;
    position: relative;
}

.main-nav .nav-list a::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 0;
    height: 2px;
    background-color: var(--primary);
    transition: width 0.3s ease;
}

.main-nav .nav-list a:hover::after, .main-nav .nav-list a.active::after {
    width: 100%;
}

.hamburger-menu {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    flex-direction: column;
    gap: 5px;
    padding: 5px;
}

.hamburger-menu span {
    display: block;
    width: 25px;
    height: 3px;
    background-color: var(--text);
    border-radius: 2px;
    transition: all 0.3s ease;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    background: linear-gradient(rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0.5)), url('https://picsum.photos/seed/hotel-lobby/1920/1080') no-repeat center center/cover;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: var(--surface);
    padding: 20px;
}

.hero-content {
    max-width: 800px;
}

.hero-content h1 {
    color: var(--surface);
    margin-bottom: 20px;
}

.hero-content p {
    font-size: clamp(1.1rem, 1rem + 0.5vw, 1.4rem);
    margin-bottom: 30px;
}

/* Sections */
section {
    padding: 80px 0;
}

.section-rooms, .section-booking, .success-page, .admin-panel {
    background-color: var(--surface);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    margin-top: 40px;
    margin-bottom: 40px;
    padding: 40px;
}

/* Room Grid */
.room-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.room-card {
    background-color: var(--surface);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    overflow: hidden;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    display: flex;
    flex-direction: column;
}

.room-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
}

.room-card img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    display: block;
}

.room-card-content {
    padding: 20px;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.room-card-content h3 {
    font-size: 1.5rem;
    margin-bottom: 10px;
    color: var(--primary);
}

.room-card-content p {
    font-size: 0.95rem;
    color: var(--muted);
    margin-bottom: 15px;
    flex-grow: 1;
}

.room-card-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 15px;
    padding-top: 15px;
    border-top: 1px solid #eee;
}

.room-card-footer .price {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--secondary);
}

.room-card-footer .capacity {
    font-size: 0.9rem;
    color: var(--muted);
}

/* Booking Form */
.booking-form {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
    max-width: 900px;
    margin: 0 auto;
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-group label {
    margin-bottom: 8px;
    font-weight: 700;
    color: var(--secondary);
}

.form-group input[type="text"], .form-group input[type="number"], .form-group input[type="email"], .form-group select {
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: var(--radius);
    font-size: 1rem;
    width: 100%;
    transition: border-color 0.3s ease;
}

.form-group input:focus, .form-group select:focus {
    border-color: var(--primary);
    outline: none;
}

.calendar-container {
    grid-column: 1 / -1;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
    margin-top: 20px;
    margin-bottom: 20px;
}

.calendar {
    background-color: var(--surface);
    border: 1px solid #eee;
    border-radius: var(--radius);
    padding: 20px;
    text-align: center;
    box-shadow: var(--shadow);
}

.calendar-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.calendar-header button {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--secondary);
    padding: 5px;
}

.calendar-header button:hover {
    color: var(--primary);
}

.calendar-header h3 {
    margin: 0;
    color: var(--primary);
}

.calendar-days-header {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    font-weight: 700;
    color: var(--muted);
    margin-bottom: 10px;
}

.calendar-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 5px;
}

.calendar-grid div {
    padding: 10px 5px;
    border-radius: var(--radius);
    cursor: pointer;
    transition: background-color 0.2s ease, color 0.2s ease;
    font-size: 0.9rem;
}

.calendar-grid div.empty {
    visibility: hidden;
}

.calendar-grid div.day:hover:not(.disabled):not(.selected):not(.range-selected) {
    background-color: #f0f0f0;
}

.calendar-grid div.disabled {
    color: #ccc;
    cursor: not-allowed;
    background-color: #f9f9f9;
}

.calendar-grid div.selected {
    background-color: var(--primary);
    color: var(--surface);
    font-weight: 700;
}

.calendar-grid div.range-selected {
    background-color: var(--accent);
    color: var(--surface);
}

.availability-status {
    grid-column: 1 / -1;
    padding: 15px;
    border-radius: var(--radius);
    margin-top: 10px;
    font-weight: 700;
    text-align: center;
}

.availability-status.available {
    background-color: #e6ffe6;
    color: #28a745;
    border: 1px solid #28a745;
}

.availability-status.unavailable {
    background-color: #ffe6e6;
    color: #dc3545;
    border: 1px solid #dc3545;
}

.booking-summary {
    grid-column: 1 / -1;
    background-color: var(--bg);
    padding: 20px;
    border-radius: var(--radius);
    border: 1px solid #ddd;
    margin-top: 20px;
}

.booking-summary h3 {
    color: var(--primary);
    margin-bottom: 15px;
}

.booking-summary p {
    margin-bottom: 8px;
    color: var(--text);
}

.booking-summary .total-price {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--secondary);
    margin-top: 15px;
    border-top: 1px solid #eee;
    padding-top: 15px;
}

.booking-form .btn-primary {
    grid-column: 1 / -1;
    margin-top: 20px;
    width: fit-content;
    justify-self: center;
}

.error-message {
    color: #dc3545;
    font-size: 0.85rem;
    margin-top: 5px;
    margin-bottom: 0;
}

/* Footer */
.main-footer {
    background-color: var(--secondary);
    color: var(--surface);
    padding: 30px 0;
    text-align: center;
    margin-top: 60px;
}

.main-footer p {
    font-size: 0.9rem;
}

/* Admin Panel */
.admin-panel h1 {
    text-align: center;
    margin-bottom: 40px;
}

#auth-section {
    text-align: center;
    margin-bottom: 40px;
}

#auth-section input {
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: var(--radius);
    margin-right: 10px;
    width: 200px;
}

.data-section {
    margin-bottom: 40px;
}

.data-section h2 {
    text-align: left;
    margin-bottom: 20px;
    color: var(--primary);
}

.data-section p {
    margin-bottom: 10px;
    font-size: 0.9rem;
    color: var(--muted);
}

.data-section table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
    background-color: var(--surface);
    box-shadow: var(--shadow);
    border-radius: var(--radius);
    overflow: hidden;
}

.data-section th, .data-section td {
    padding: 12px 15px;
    border: 1px solid #eee;
    text-align: left;
    font-size: 0.9rem;
}

.data-section th {
    background-color: var(--bg);
    font-weight: 700;
    color: var(--secondary);
}

.data-section tbody tr:nth-child(even) {
    background-color: #f9f9f9;
}

.data-section tbody tr:hover {
    background-color: #f0f0f0;
}

.status-badge {
    display: inline-block;
    padding: 4px 8px;
    border-radius: var(--radius);
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--surface);
}

.status-badge.pending {
    background-color: #ffc107; /* Yellow */
}

.status-badge.paid, .status-badge.confirmed, .status-badge.completed {
    background-color: #28a745; /* Green */
}

.status-badge.cancelled {
    background-color: #dc3545; /* Red */
}

.admin-actions button {
    margin-right: 5px;
    padding: 6px 10px;
    font-size: 0.85rem;
}

/* Payment Success Page */
.success-page {
    text-align: center;
    padding: 60px 20px;
}

.payment-success-section h1 {
    color: var(--primary);
    margin-bottom: 20px;
}

.payment-success-section p {
    margin-bottom: 10px;
    font-size: 1.1rem;
}

.booking-details {
    background-color: var(--bg);
    border: 1px solid #ddd;
    border-radius: var(--radius);
    padding: 25px;
    margin: 30px auto;
    max-width: 500px;
    text-align: left;
}

.booking-details h3 {
    color: var(--secondary);
    margin-bottom: 15px;
    text-align: center;
}

.booking-details p {
    margin-bottom: 8px;
    font-size: 1rem;
}

.booking-details strong {
    color: var(--primary);
}

.payment-success-section .btn-primary {
    margin-top: 30px;
}

/* Responsive */
@media (max-width: 768px) {
    .main-nav .nav-list {
        display: none;
        flex-direction: column;
        position: absolute;
        top: 60px;
        left: 0;
        width: 100%;
        background-color: var(--surface);
        box-shadow: var(--shadow);
        padding: 15px 0;
        text-align: center;
    }

    .main-nav .nav-list.active {
        display: flex;
    }

    .main-nav .nav-list li {
        margin: 10px 0;
    }

    .hamburger-menu {
        display: flex;
    }

    .hero {
        min-height: 70vh;
    }

    .hero-content h1 {
        font-size: clamp(2rem, 1.5rem + 2vw, 3rem);
    }

    .room-grid {
        grid-template-columns: 1fr;
    }

    .booking-form {
        grid-template-columns: 1fr;
    }

    .calendar-container {
        grid-template-columns: 1fr;
    }

    .data-section table {
        overflow-x: auto;
        display: block;
        white-space: nowrap;
    }
}

@media (max-width: 480px) {
    .main-header .container {
        flex-wrap: wrap;
        justify-content: center;
    }

    .logo {
        margin-bottom: 10px;
    }

    .main-nav {
        width: 100%;
        display: flex;
        justify-content: flex-end;
    }

    .hero-content h1 {
        font-size: clamp(1.8rem, 1.2rem + 2vw, 2.5rem);
    }

    section {
        padding: 40px 0;
    }

    .section-rooms, .section-booking, .success-page, .admin-panel {
        padding: 20px;
    }

    .form-group input, .form-group select {
        font-size: 0.9rem;
        padding: 10px;
    }

    .calendar-grid div {
        padding: 8px 3px;
        font-size: 0.8rem;
    }

    #auth-section input {
        width: 150px;
        margin-bottom: 10px;
    }

    #auth-section button {
        width: 100px;
    }
}