/* 
 * Estilos principales - Embalse La Viñuela
 * @author Felipe Jurado
 */

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

:root {
    /* Colores principales */
    --color-primary: #1e40af;
    --color-secondary: #3b82f6;
    --color-accent: #60a5fa;
    --color-success: #10b981;
    --color-danger: #ef4444;
    --color-warning: #f59e0b;
    --color-text: #374151;
    --color-text-light: #6b7280;
    --color-bg: #f3f4f6;
    --color-white: #ffffff;
    --color-border: #e5e7eb;
    
    /* Sombras */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    
    /* Espaciado */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    color: var(--color-text);
    background-color: var(--color-bg);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Contenedor principal */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* Header */
.header {
    background-color: var(--color-white);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md) 0;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-primary);
    text-decoration: none;
}

.nav-menu {
    display: flex;
    gap: var(--spacing-lg);
    list-style: none;
}

.nav-link {
    color: var(--color-text);
    text-decoration: none;
    transition: color 0.3s ease;
}

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

/* Sección principal - Estado del embalse */
.main-section {
    padding: var(--spacing-xl) 0;
}

.embalse-card {
    background: var(--color-white);
    border-radius: 1rem;
    box-shadow: var(--shadow-lg);
    overflow: hidden;
}

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

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

.embalse-subtitle {
    font-size: 1.1rem;
    opacity: 0.9;
}

/* Visualización del embalse */
.embalse-visual {
    padding: var(--spacing-lg);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-lg);
}

.embalse-svg-container {
    width: 100%;
    max-width: 400px;
    aspect-ratio: 1;
    position: relative;
}

#embalse-svg {
    width: 100%;
    height: 100%;
}

/* Datos principales */
.main-data {
    text-align: center;
    padding: var(--spacing-md);
}

.volume-display {
    font-size: 3rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: var(--spacing-xs);
}

.percentage-display {
    font-size: 2.5rem;
    color: var(--color-secondary);
    margin-bottom: var(--spacing-sm);
}

.capacity-info {
    color: var(--color-text-light);
    font-size: 1.1rem;
}

.rainfall-info {
    margin-top: var(--spacing-md);
    padding: var(--spacing-sm) var(--spacing-md);
    background-color: var(--color-bg);
    border-radius: 0.5rem;
    display: inline-block;
}

/* Comparaciones */
.comparisons-section {
    padding: var(--spacing-lg);
    background-color: var(--color-bg);
}

.comparisons-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
    max-width: 600px;
    margin: 0 auto;
}

.comparison-card {
    background: var(--color-white);
    padding: var(--spacing-md);
    border-radius: 0.75rem;
    text-align: center;
    box-shadow: var(--shadow-md);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.comparison-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.comparison-title {
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: var(--spacing-sm);
    font-size: 1.1rem;
}

.trend-indicator {
    font-size: 2.5rem;
    margin: var(--spacing-sm) 0;
}

.trend-up {
    color: var(--color-success);
}

.trend-down {
    color: var(--color-danger);
}

.trend-stable {
    color: var(--color-text-light);
}

.difference-value {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-text);
}

.difference-percentage {
    font-size: 0.9rem;
    color: var(--color-text-light);
    margin-top: var(--spacing-xs);
}

/* Suscripción Newsletter */
.newsletter-section {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    color: var(--color-white);
    padding: var(--spacing-xl) 0;
    margin-top: var(--spacing-xl);
}

.newsletter-content {
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
}

.newsletter-title {
    font-size: 2rem;
    margin-bottom: var(--spacing-sm);
}

.newsletter-description {
    font-size: 1.1rem;
    margin-bottom: var(--spacing-lg);
    opacity: 0.95;
}

.newsletter-form {
    display: flex;
    gap: var(--spacing-sm);
    max-width: 400px;
    margin: 0 auto;
}

.email-input {
    flex: 1;
    padding: var(--spacing-sm) var(--spacing-md);
    border: none;
    border-radius: 0.5rem;
    font-size: 1rem;
    color: var(--color-text);
}

.subscribe-button {
    padding: var(--spacing-sm) var(--spacing-lg);
    background-color: var(--color-white);
    color: var(--color-primary);
    border: none;
    border-radius: 0.5rem;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.subscribe-button:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.subscribe-button:disabled {
    opacity: 0.7;
    cursor: not-allowed;
}

/* Footer */
.footer {
    background-color: var(--color-text);
    color: var(--color-white);
    padding: var(--spacing-lg) 0;
    text-align: center;
}

.footer-content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: var(--spacing-lg);
    list-style: none;
}

.footer-link {
    color: var(--color-white);
    text-decoration: none;
    opacity: 0.8;
    transition: opacity 0.3s ease;
}

.footer-link:hover {
    opacity: 1;
}

/* Mensajes y alertas */
.alert {
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: 0.5rem;
    margin: var(--spacing-md) 0;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.alert-success {
    background-color: #d1fae5;
    color: #065f46;
}

.alert-error {
    background-color: #fee2e2;
    color: #991b1b;
}

.alert-info {
    background-color: #dbeafe;
    color: #1e40af;
}

/* Loading state */
.loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-xl);
    color: var(--color-text-light);
}

.loading-spinner {
    width: 50px;
    height: 50px;
    border: 3px solid var(--color-border);
    border-top-color: var(--color-secondary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* Actualización timestamp */
.update-time {
    text-align: center;
    color: var(--color-text-light);
    font-size: 0.875rem;
    margin-top: var(--spacing-md);
}

/* Responsive */
@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        gap: var(--spacing-md);
    }
    
    .nav-menu {
        gap: var(--spacing-md);
    }
    
    .volume-display {
        font-size: 2.5rem;
    }
    
    .percentage-display {
        font-size: 2rem;
    }
    
    .newsletter-form {
        flex-direction: column;
    }
    
    .comparisons-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-links {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
}

/* Leyenda de niveles */
.water-level-legend {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
    flex-wrap: wrap;
    font-size: 0.875rem;
}

.legend-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.legend-color {
    width: 16px;
    height: 16px;
    border-radius: 3px;
    border: 1px solid var(--color-border);
}

.legend-color.critical { background-color: #ef4444; }
.legend-color.low { background-color: #f59e0b; }
.legend-color.normal { background-color: #3b82f6; }
.legend-color.optimal { background-color: #10b981; }

.legend-text {
    color: var(--color-text-light);
}

/* Animaciones para el agua del embalse */
@keyframes waterWave {
    0%, 100% {
        transform: translateX(0) translateY(0);
    }
    25% {
        transform: translateX(-5px) translateY(-2px);
    }
    75% {
        transform: translateX(5px) translateY(-2px);
    }
}

.water-animation {
    animation: waterWave 4s ease-in-out infinite;
}

/* Utilidades */
.text-center { text-align: center; }
.hidden { display: none; }
.mt-1 { margin-top: var(--spacing-xs); }
.mt-2 { margin-top: var(--spacing-sm); }
.mt-3 { margin-top: var(--spacing-md); }
.mt-4 { margin-top: var(--spacing-lg); }
.mt-5 { margin-top: var(--spacing-xl); }