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

:root {
    --primary-color: #ff6b6b;
    --secondary-color: #4ecdc4;
    --accent-color: #ffe66d;
    --dark-color: #2c3e50;
    --light-color: #ecf0f1;
    --success-color: #2ecc71;
    --warning-color: #f39c12;
    --danger-color: #e74c3c;
    --shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    --shadow-hover: 0 4px 20px rgba(0, 0, 0, 0.15);
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    padding: 20px;
    color: var(--dark-color);
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    background: white;
    border-radius: 20px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
    overflow: hidden;
}

/* Header */
.header {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    padding: 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
}

.header h1 {
    font-size: 2rem;
    display: flex;
    align-items: center;
    gap: 15px;
}

.crowd-status {
    display: flex;
    align-items: center;
    gap: 10px;
    background: rgba(255, 255, 255, 0.2);
    padding: 10px 20px;
    border-radius: 25px;
    backdrop-filter: blur(10px);
}

.crowd-indicator {
    font-weight: bold;
    padding: 5px 15px;
    border-radius: 15px;
    background: rgba(255, 255, 255, 0.3);
}

.crowd-indicator.low {
    background: var(--success-color);
}

.crowd-indicator.moderate {
    background: var(--warning-color);
}

.crowd-indicator.high {
    background: var(--danger-color);
}

/* Navigation Tabs */
.tabs {
    display: flex;
    background: var(--light-color);
    border-bottom: 2px solid #ddd;
    overflow-x: auto;
}

.tab-btn {
    flex: 1;
    padding: 20px;
    border: none;
    background: transparent;
    cursor: pointer;
    font-size: 1rem;
    font-weight: 600;
    color: var(--dark-color);
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    min-width: 150px;
}

.tab-btn:hover {
    background: rgba(255, 107, 107, 0.1);
}

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

/* Tab Content */
.tab-content {
    display: none;
    padding: 30px;
    animation: fadeIn 0.3s ease;
}

.tab-content.active {
    display: block;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.tab-content h2 {
    margin-bottom: 25px;
    color: var(--dark-color);
    font-size: 1.8rem;
}

/* Tables Grid */
.tables-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 20px;
}

.table-card {
    background: white;
    border: 3px solid #ddd;
    border-radius: 15px;
    padding: 20px;
    text-align: center;
    transition: all 0.3s ease;
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.table-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 5px;
    background: var(--success-color);
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.table-card.vacant {
    border-color: var(--success-color);
    background: #f0fff4;
}

.table-card.vacant::before {
    background: var(--success-color);
    transform: scaleX(1);
}

.table-card.occupied {
    border-color: var(--danger-color);
    background: #fff5f5;
}

.table-card.occupied::before {
    background: var(--danger-color);
    transform: scaleX(1);
}

.table-card.reserved {
    border-color: var(--warning-color);
    background: #fffbf0;
}

.table-card.reserved::before {
    background: var(--warning-color);
    transform: scaleX(1);
}

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

.table-number {
    font-size: 2rem;
    font-weight: bold;
    color: var(--dark-color);
    margin-bottom: 10px;
}

.table-category {
    font-size: 0.9rem;
    color: #666;
    margin-bottom: 10px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.table-status {
    font-weight: 600;
    padding: 5px 15px;
    border-radius: 20px;
    display: inline-block;
    font-size: 0.85rem;
}

.table-status.vacant {
    background: var(--success-color);
    color: white;
}

.table-status.occupied {
    background: var(--danger-color);
    color: white;
}

.table-status.reserved {
    background: var(--warning-color);
    color: white;
}

.table-capacity {
    margin-top: 10px;
    font-size: 0.9rem;
    color: #666;
}

/* Menu Section */
.menu-categories {
    display: flex;
    gap: 10px;
    margin-bottom: 30px;
    flex-wrap: wrap;
}

.category-btn {
    padding: 10px 20px;
    border: 2px solid var(--primary-color);
    background: white;
    color: var(--primary-color);
    border-radius: 25px;
    cursor: pointer;
    font-weight: 600;
    transition: all 0.3s ease;
}

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

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

.menu-items {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 25px;
}

.menu-item {
    background: white;
    border-radius: 15px;
    padding: 20px;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.menu-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
    border-color: var(--primary-color);
}

.menu-item-header {
    display: flex;
    justify-content: space-between;
    align-items: start;
    margin-bottom: 15px;
}

.menu-item-name {
    font-size: 1.3rem;
    font-weight: bold;
    color: var(--dark-color);
}

.menu-item-price {
    font-size: 1.2rem;
    font-weight: bold;
    color: var(--primary-color);
}

.menu-item-description {
    color: #666;
    margin-bottom: 15px;
    line-height: 1.6;
}

.menu-item-tags {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.tag {
    padding: 5px 12px;
    background: var(--light-color);
    border-radius: 15px;
    font-size: 0.8rem;
    color: var(--dark-color);
}

/* Feedback Form */
.feedback-form {
    max-width: 600px;
    margin: 0 auto;
}

.form-group {
    margin-bottom: 25px;
}

.form-group label {
    display: block;
    margin-bottom: 10px;
    font-weight: 600;
    color: var(--dark-color);
}

.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px;
    border: 2px solid #ddd;
    border-radius: 10px;
    font-size: 1rem;
    font-family: inherit;
    transition: border-color 0.3s ease;
}

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

.rating {
    display: flex;
    flex-direction: row-reverse;
    justify-content: flex-end;
    gap: 5px;
}

.rating input {
    display: none;
}

.rating label {
    font-size: 2rem;
    color: #ddd;
    cursor: pointer;
    transition: color 0.2s ease;
    margin: 0;
}

.rating label:hover,
.rating label:hover ~ label,
.rating input:checked ~ label {
    color: var(--accent-color);
}

.submit-btn {
    width: 100%;
    padding: 15px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    border: none;
    border-radius: 10px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.submit-btn:hover {
    transform: scale(1.02);
}

/* Analytics Section */
.analytics-controls {
    display: flex;
    gap: 10px;
    margin-bottom: 30px;
    flex-wrap: wrap;
}

.period-btn {
    padding: 10px 25px;
    border: 2px solid var(--primary-color);
    background: white;
    color: var(--primary-color);
    border-radius: 25px;
    cursor: pointer;
    font-weight: 600;
    transition: all 0.3s ease;
}

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

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

.top-dishes {
    margin-bottom: 30px;
}

.dish-rank-card {
    background: white;
    border-radius: 15px;
    padding: 20px;
    margin-bottom: 15px;
    box-shadow: var(--shadow);
    display: flex;
    align-items: center;
    gap: 20px;
    transition: all 0.3s ease;
}

.dish-rank-card:hover {
    transform: translateX(5px);
    box-shadow: var(--shadow-hover);
}

.rank-number {
    font-size: 2rem;
    font-weight: bold;
    color: var(--primary-color);
    min-width: 50px;
    text-align: center;
}

.dish-info {
    flex: 1;
}

.dish-name {
    font-size: 1.2rem;
    font-weight: bold;
    margin-bottom: 5px;
}

.dish-stats {
    display: flex;
    gap: 20px;
    color: #666;
    font-size: 0.9rem;
}

.dish-rating {
    display: flex;
    align-items: center;
    gap: 5px;
    color: var(--accent-color);
    font-weight: bold;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
}

.stat-card {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    padding: 30px;
    border-radius: 15px;
    text-align: center;
    box-shadow: var(--shadow);
}

.stat-card i {
    font-size: 2.5rem;
    margin-bottom: 15px;
}

.stat-card h3 {
    font-size: 2.5rem;
    margin-bottom: 10px;
}

.stat-card p {
    font-size: 1rem;
    opacity: 0.9;
}

/* Responsive Design */
@media (max-width: 768px) {
    .header {
        flex-direction: column;
        text-align: center;
    }

    .header h1 {
        font-size: 1.5rem;
    }

    .tab-btn {
        min-width: 120px;
        padding: 15px 10px;
        font-size: 0.9rem;
    }

    .tables-grid {
        grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    }

    .menu-items {
        grid-template-columns: 1fr;
    }

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

    .dish-rank-card {
        flex-direction: column;
        text-align: center;
    }

    .tab-content {
        padding: 20px;
    }
}

@media (max-width: 480px) {
    body {
        padding: 10px;
    }

    .header {
        padding: 20px;
    }

    .header h1 {
        font-size: 1.3rem;
    }

    .tables-grid {
        grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
        gap: 15px;
    }

    .table-card {
        padding: 15px;
    }

    .table-number {
        font-size: 1.5rem;
    }

    .menu-categories,
    .analytics-controls {
        gap: 5px;
    }

    .category-btn,
    .period-btn {
        padding: 8px 15px;
        font-size: 0.85rem;
    }
}