/**
 * AhorrandoAndo - Estilos Principales
 * Sistema de Ofertas de Supermercados
 */

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

body {
    font-family: 'Google Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f8f9fa;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
.header {
    background: linear-gradient(135deg, #e74c3c, #c0392b);
    color: white;
    padding: 1rem 0;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

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

.logo h1 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 0.25rem;
}

.tagline {
    font-size: 0.9rem;
    opacity: 0.9;
}

.nav {
    display: flex;
    gap: 2rem;
}

.nav-link {
    color: white;
    text-decoration: none;
    font-weight: 500;
    transition: opacity 0.3s ease;
}

.nav-link:hover {
    opacity: 0.8;
}

/* Main Content */
.main {
    padding: 2rem 0;
}

/* Alerts */
.alert {
    padding: 1rem;
    margin: 1rem 0;
    border-radius: 8px;
    border-left: 4px solid;
}

.alert-success {
    background: #d4edda;
    color: #155724;
    border-color: #28a745;
}

.alert-warning {
    background: #fff3cd;
    color: #856404;
    border-color: #ffc107;
}

.alert-error {
    background: #f8d7da;
    color: #721c24;
    border-color: #dc3545;
}

/* Hero Section */
.hero {
    text-align: center;
    padding: 3rem 0;
    background: white;
    border-radius: 12px;
    margin: 2rem 0;
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
}

.hero h2 {
    font-size: 2.5rem;
    color: #2c3e50;
    margin-bottom: 1rem;
}

.hero p {
    font-size: 1.2rem;
    color: #7f8c8d;
    margin-bottom: 2rem;
}

/* Search */
.search-container {
    max-width: 600px;
    margin: 0 auto;
}

.search-form {
    background: white;
    padding: 1.5rem;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
}

.search-input-group {
    display: flex;
    margin-bottom: 1rem;
}

.search-input {
    flex: 1;
    padding: 1rem;
    border: 2px solid #e9ecef;
    border-radius: 8px 0 0 8px;
    font-size: 1rem;
    outline: none;
    transition: border-color 0.3s ease;
}

.search-input:focus {
    border-color: #e74c3c;
}

.search-btn {
    padding: 1rem 2rem;
    background: #e74c3c;
    color: white;
    border: none;
    border-radius: 0 8px 8px 0;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

.search-btn:hover {
    background: #c0392b;
}

.search-filters {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.filter-select {
    flex: 1;
    min-width: 200px;
    padding: 0.75rem;
    border: 2px solid #e9ecef;
    border-radius: 8px;
    font-size: 0.9rem;
    outline: none;
    transition: border-color 0.3s ease;
}

.filter-select:focus {
    border-color: #e74c3c;
}

/* Stats */
.stats {
    margin: 3rem 0;
}

.stats h3 {
    text-align: center;
    margin-bottom: 2rem;
    color: #2c3e50;
}

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

.stat-card {
    background: white;
    padding: 2rem;
    border-radius: 12px;
    text-align: center;
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
    transition: transform 0.3s ease;
}

.stat-card:hover {
    transform: translateY(-5px);
}

.stat-number {
    font-size: 3rem;
    font-weight: 700;
    color: #e74c3c;
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 1.1rem;
    color: #7f8c8d;
    font-weight: 500;
}

/* Features */
.features {
    margin: 3rem 0;
}

.features h3 {
    text-align: center;
    margin-bottom: 2rem;
    color: #2c3e50;
}

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

.feature-card {
    background: white;
    padding: 2rem;
    border-radius: 12px;
    text-align: center;
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
    transition: transform 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-5px);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.feature-card h4 {
    font-size: 1.3rem;
    color: #2c3e50;
    margin-bottom: 1rem;
}

.feature-card p {
    color: #7f8c8d;
    line-height: 1.6;
}

/* Supermarkets */
.supermarkets {
    margin: 3rem 0;
}

.supermarkets h3 {
    text-align: center;
    margin-bottom: 2rem;
    color: #2c3e50;
}

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

.supermarket-card {
    background: white;
    padding: 1.5rem;
    border-radius: 12px;
    text-align: center;
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
    transition: transform 0.3s ease;
}

.supermarket-card:hover {
    transform: translateY(-5px);
}

.supermarket-logo {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.supermarket-card h4 {
    color: #2c3e50;
    margin-bottom: 0.5rem;
}

.supermarket-card p {
    color: #7f8c8d;
    font-size: 0.9rem;
}

/* Footer */
.footer {
    background: #2c3e50;
    color: white;
    padding: 3rem 0 1rem;
    margin-top: 4rem;
}

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

.footer-section h4 {
    margin-bottom: 1rem;
    color: #e74c3c;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 0.5rem;
}

.footer-section a {
    color: #bdc3c7;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-section a:hover {
    color: white;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid #34495e;
    color: #bdc3c7;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-primary {
    background: #e74c3c;
    color: white;
}

.btn-primary:hover {
    background: #c0392b;
    transform: translateY(-2px);
}

/* Modals */
.search-results-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.5);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
}

.modal-content {
    background: white;
    border-radius: 12px;
    max-width: 600px;
    width: 90%;
    max-height: 80vh;
    overflow-y: auto;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem;
    border-bottom: 1px solid #e9ecef;
}

.modal-header h3 {
    color: #2c3e50;
}

.close-modal {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: #7f8c8d;
}

.modal-body {
    padding: 1.5rem;
}

.no-results {
    text-align: center;
    color: #7f8c8d;
}

/* Loading */
.loading-indicator {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(255,255,255,0.9);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    z-index: 1000;
}

.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid #e9ecef;
    border-top: 4px solid #e74c3c;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: 1rem;
}

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

/* Notifications */
.notification {
    position: fixed;
    top: 20px;
    right: 20px;
    padding: 1rem 1.5rem;
    border-radius: 8px;
    color: white;
    font-weight: 500;
    z-index: 1000;
    transform: translateX(100%);
    transition: transform 0.3s ease;
}

.notification.show {
    transform: translateX(0);
}

.notification-info {
    background: #3498db;
}

.notification-success {
    background: #27ae60;
}

.notification-warning {
    background: #f39c12;
}

.notification-error {
    background: #e74c3c;
}

/* Responsive */
@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        gap: 1rem;
    }
    
    .nav {
        gap: 1rem;
    }
    
    .hero h2 {
        font-size: 2rem;
    }
    
    .search-input-group {
        flex-direction: column;
    }
    
    .search-input {
        border-radius: 8px;
        margin-bottom: 1rem;
    }
    
    .search-btn {
        border-radius: 8px;
    }
    
    .search-filters {
        flex-direction: column;
    }
    
    .filter-select {
        min-width: auto;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .supermarkets-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }
    
    .hero {
        padding: 2rem 1rem;
    }
    
    .hero h2 {
        font-size: 1.8rem;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .supermarkets-grid {
        grid-template-columns: 1fr;
    }
}