/**
 * Mobile-First Styles for I Don't Care Restaurant Finder
 * Base styles are optimized for mobile devices (< 768px)
 */

/* CSS Variables for easy theming */
:root {
    --primary-color: #ff6b6b;
    --primary-hover: #ff5252;
    --secondary-color: #4ecdc4;
    --text-dark: #2d3436;
    --text-light: #636e72;
    --bg-light: #f8f9fa;
    --bg-white: #ffffff;
    --border-color: #dfe6e9;
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
    --radius: 8px;
    --spacing-xs: 8px;
    --spacing-sm: 12px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--bg-light);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Header */
.header {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
    padding: var(--spacing-lg) var(--spacing-md);
    text-align: center;
    box-shadow: var(--shadow-md);
}

.app-title {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
}

.app-subtitle {
    font-size: 1.1rem;
    opacity: 0.95;
    font-weight: 300;
}

/* Main Container */
.container {
    flex: 1;
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-lg) var(--spacing-md);
    width: 100%;
}

/* Filters Section */
.filters {
    background: var(--bg-white);
    padding: var(--spacing-lg);
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
    margin-bottom: var(--spacing-lg);
}

.filter-group {
    margin-bottom: var(--spacing-md);
}

.filter-group label {
    display: block;
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    color: var(--text-dark);
    font-size: 0.95rem;
}

.filter-select {
    width: 100%;
    padding: 12px;
    border: 2px solid var(--border-color);
    border-radius: var(--radius);
    font-size: 1rem;
    background-color: var(--bg-white);
    cursor: pointer;
    transition: border-color 0.3s ease;
}

.filter-select:focus {
    outline: none;
    border-color: var(--primary-color);
}

/* Price Filters */
.price-filters {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.price-option {
    flex: 1;
    min-width: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 12px;
    border: 2px solid var(--border-color);
    border-radius: var(--radius);
    cursor: pointer;
    transition: all 0.3s ease;
    background: var(--bg-white);
}

.price-option input[type="checkbox"] {
    display: none;
}

.price-option span {
    font-weight: 600;
    color: var(--text-light);
    font-size: 1.1rem;
}

.price-option input[type="checkbox"]:checked + span {
    color: var(--primary-color);
}

.price-option:has(input:checked) {
    border-color: var(--primary-color);
    background-color: rgba(255, 107, 107, 0.05);
}

/* Buttons */
.btn-primary,
.btn-secondary {
    width: 100%;
    padding: 16px;
    font-size: 1.1rem;
    font-weight: 600;
    border: none;
    border-radius: var(--radius);
    cursor: pointer;
    transition: all 0.3s ease;
    min-height: 50px;
}

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

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

.btn-primary:active {
    transform: translateY(0);
}

.btn-secondary {
    background-color: var(--bg-light);
    color: var(--text-dark);
}

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

/* Loading Indicator */
.loading {
    text-align: center;
    padding: var(--spacing-xl);
}

.spinner {
    width: 50px;
    height: 50px;
    margin: 0 auto var(--spacing-md);
    border: 4px solid var(--border-color);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* Error Message */
.error-message {
    background-color: #fff5f5;
    border: 2px solid #fc8181;
    color: #c53030;
    padding: var(--spacing-md);
    border-radius: var(--radius);
    margin-bottom: var(--spacing-lg);
}

.error-message p {
    margin-bottom: var(--spacing-sm);
}

/* Results Section */
.results-section {
    margin-bottom: var(--spacing-lg);
}

.results-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-md);
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.results-header h2 {
    font-size: 1.5rem;
    color: var(--text-dark);
}

.sort-select {
    padding: 8px 12px;
    border: 2px solid var(--border-color);
    border-radius: var(--radius);
    font-size: 0.9rem;
    background-color: var(--bg-white);
    cursor: pointer;
}

/* Results Grid */
.results-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
}

/* Restaurant Card */
.restaurant-card {
    background: var(--bg-white);
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    transition: all 0.3s ease;
    cursor: pointer;
    text-decoration: none;
    color: inherit;
    display: block;
}

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

.restaurant-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
    background-color: var(--bg-light);
}

.restaurant-info {
    padding: var(--spacing-md);
}

.restaurant-name {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    color: var(--text-dark);
}

.restaurant-meta {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-xs);
    flex-wrap: wrap;
}

.rating {
    display: flex;
    align-items: center;
    gap: 4px;
    font-weight: 600;
}

.rating-stars {
    color: #fbbf24;
}

.rating-value {
    color: var(--text-dark);
}

.review-count {
    color: var(--text-light);
    font-size: 0.9rem;
}

.price {
    color: var(--secondary-color);
    font-weight: 700;
}

.distance {
    color: var(--text-light);
    font-size: 0.9rem;
}

.restaurant-categories {
    color: var(--text-light);
    font-size: 0.9rem;
    margin-bottom: var(--spacing-xs);
}

.restaurant-address {
    color: var(--text-light);
    font-size: 0.85rem;
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: var(--spacing-xl);
    background: var(--bg-white);
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
}

.empty-state p {
    color: var(--text-light);
    font-size: 1.1rem;
    margin-bottom: var(--spacing-sm);
}

/* Footer */
.footer {
    background-color: var(--text-dark);
    color: white;
    text-align: center;
    padding: var(--spacing-lg) var(--spacing-md);
    margin-top: auto;
}

.footer p {
    margin-bottom: var(--spacing-xs);
    font-size: 0.9rem;
}

.footer-note {
    font-size: 0.8rem;
    opacity: 0.7;
}

/* Noscript Warning */
.noscript-warning {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.9);
    color: white;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: var(--spacing-lg);
    z-index: 9999;
}

.noscript-warning h2 {
    margin-bottom: var(--spacing-md);
}

/* Utility Classes */
.hidden {
    display: none !important;
}

.text-center {
    text-align: center;
}

.mb-sm {
    margin-bottom: var(--spacing-sm);
}

.mb-md {
    margin-bottom: var(--spacing-md);
}

.mb-lg {
    margin-bottom: var(--spacing-lg);
}