/**
 * Chaska Peru Export - Estilos principales
 * Sistema de diseño basado en el proyecto Pencil
 */

/* ========== Variables CSS ========== */
:root {
    /* Colores principales (Extraídos de Pencil) */
    --accent-coral: #D89575;
    --accent-green: #3D8A5A;
    --accent-green-light: #C8F0D8;
    --accent-red: #D08068;
    --accent-warning: #D4A64A;
    --accent-green-hover: #2d6642;

    /* Fondos */
    --bg-page: #F5F4F1;
    --bg-card: #FFFFFF;
    --bg-sidebar: #1A1918;

    /* Textos */
    --text-primary: #1A1918;
    --text-secondary: #6D6C6A;
    --text-tertiary: #9C9B99;
    --text-on-dark: #FFFFFF;
    --text-on-dark-muted: #A8A7A5;

    /* Bordes */
    --border-subtle: #E5E4E1;
    --border-strong: #D1D0CD;

    /* Fuentes */
    --font-primary: 'Fraunces', serif;
    --font-secondary: 'Outfit', sans-serif;

    /* Espaciado */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-2xl: 48px;
    --spacing-3xl: 64px;

    /* Radios */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-full: 100px;

    /* Sombras */
    --shadow-sm: 0 2px 12px rgba(26, 25, 24, 0.03);
    --shadow-md: 0 4px 30px rgba(0, 0, 0, 0.03);

    /* Transiciones */
    --transition-fast: 150ms ease-in-out;
    --transition-base: 300ms ease-in-out;
}

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-secondary);
    color: var(--text-primary);
    background-color: var(--bg-page);
    line-height: 1.6;
    overflow-x: hidden;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition-fast);
}

button {
    border: none;
    background: none;
    cursor: pointer;
    font-family: inherit;
}

input, textarea, select {
    font-family: inherit;
    font-size: inherit;
}

/* ========== Tipografía ========== */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-primary);
    font-weight: 500;
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
}

h1 {
    font-size: clamp(32px, 5vw, 56px);
    letter-spacing: -1px;
}

h2 {
    font-size: clamp(28px, 4vw, 40px);
    letter-spacing: -0.5px;
}

h3 {
    font-size: clamp(24px, 3vw, 32px);
}

h4 {
    font-size: clamp(20px, 2.5vw, 28px);
}

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

/* ========== Utilidades ========== */
.container {
    width: 100%;
    max-width: 1440px;
    margin: 0 auto;
    padding: 0 var(--spacing-xl);
}

.container-fluid {
    width: 100%;
    padding: 0 var(--spacing-xl);
}

.flex {
    display: flex;
}

.flex-col {
    flex-direction: column;
}

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

.justify-center {
    justify-content: center;
}

.justify-between {
    justify-content: space-between;
}

.gap-sm { gap: var(--spacing-sm); }
.gap-md { gap: var(--spacing-md); }
.gap-lg { gap: var(--spacing-lg); }
.gap-xl { gap: var(--spacing-xl); }

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

.text-secondary {
    color: var(--text-secondary);
}

.hidden {
    display: none;
}

/* ========== Botones ========== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: 14px 32px;
    border-radius: var(--radius-full);
    font-weight: 600;
    font-size: 15px;
    transition: var(--transition-base);
    cursor: pointer;
    border: none;
    white-space: nowrap;
}

.btn-primary {
    background: var(--accent-green);
    color: white;
}

.btn-primary:hover {
    background: var(--accent-green-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(184, 83, 62, 0.3);
}

.btn-secondary {
    background: var(--bg-card);
    color: var(--text-primary);
    border: 1px solid var(--border-subtle);
}

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

.btn-sm {
    padding: 10px 24px;
    font-size: 14px;
}

.btn-lg {
    padding: 16px 40px;
    font-size: 16px;
}

.btn-full {
    width: 100%;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* ========== Formularios ========== */
.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-label {
    display: block;
    font-weight: 600;
    font-size: 13px;
    margin-bottom: 6px;
    color: var(--text-primary);
}

.form-control {
    width: 100%;
    padding: 12px 14px;
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-sm);
    background: var(--bg-page);
    font-size: 14px;
    transition: var(--transition-fast);
}

.form-control:focus {
    outline: none;
    border-color: var(--accent-green);
    box-shadow: 0 0 0 3px rgba(184, 83, 62, 0.1);
}

.form-control::placeholder {
    color: var(--text-secondary);
}

textarea.form-control {
    resize: vertical;
    min-height: 120px;
}

.form-error {
    color: #DC2626;
    font-size: 13px;
    margin-top: 4px;
}

.checkbox-wrapper {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.checkbox {
    width: 18px;
    height: 18px;
    border: 1.5px solid var(--border-strong);
    border-radius: 4px;
    cursor: pointer;
}

/* ========== Cards ========== */
.card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-sm);
    transition: var(--transition-base);
}

.card:hover {
    box-shadow: var(--shadow-md);
}

.card-header {
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--border-subtle);
    margin-bottom: var(--spacing-md);
}

.card-title {
    font-size: 18px;
    font-weight: 600;
    margin: 0;
}

/* ========== Header/Navegación ========== */
.header {
    background: var(--bg-card);
    border-bottom: 1px solid var(--border-subtle);
    position: sticky;
    top: 0;
    z-index: 1000;
    height: 70px;
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
    padding: 0 var(--spacing-2xl);
}

.logo {
    font-family: var(--font-primary);
    font-size: 22px;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -0.5px;
}

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

.nav-link {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
    transition: var(--transition-fast);
}

.nav-link:hover,
.nav-link.active {
    color: var(--accent-green);
}

.nav-icons {
    display: flex;
    gap: var(--spacing-md);
}

.icon-btn {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    transition: var(--transition-fast);
}

.icon-btn:hover {
    background: var(--bg-page);
    color: var(--accent-green);
}

/* Menú móvil */
.mobile-menu-toggle {
    display: none;
}

/* ========== Hero Section ========== */
.hero {
    position: relative;
    height: 500px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    overflow: hidden;
    background-size: cover;
    background-position: center;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.4);
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
    color: white;
    max-width: 800px;
    padding: 0 var(--spacing-lg);
}

.hero-title {
    color: white;
    margin-bottom: var(--spacing-lg);
}

.hero-subtitle {
    font-size: 18px;
    color: rgba(255, 255, 255, 0.8);
    max-width: 600px;
    margin: 0 auto var(--spacing-xl);
}

/* ========== Grid de productos ========== */
.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--spacing-lg);
}

.product-card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition-base);
}

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

.product-image {
    width: 100%;
    height: 280px;
    object-fit: cover;
    background: var(--bg-page);
}

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

.product-category {
    font-size: 12px;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: var(--spacing-sm);
}

.product-name {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.product-price {
    font-size: 20px;
    font-weight: 600;
    color: var(--accent-green);
    font-family: var(--font-primary);
}

.product-price-old {
    font-size: 16px;
    color: var(--text-secondary);
    text-decoration: line-through;
    margin-left: var(--spacing-sm);
}

/* ========== Footer ========== */
.footer {
    background: var(--bg-sidebar);
    color: var(--text-on-dark);
    padding: var(--spacing-3xl) 0;
    margin-top: var(--spacing-3xl);
}

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

.footer-section h4 {
    color: var(--text-on-dark);
    font-size: 16px;
    margin-bottom: var(--spacing-md);
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: var(--spacing-sm);
}

.footer-links a {
    color: var(--text-on-dark-muted);
    font-size: 14px;
}

.footer-links a:hover {
    color: var(--text-on-dark);
}

.footer-bottom {
    margin-top: var(--spacing-2xl);
    padding-top: var(--spacing-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.social-icons {
    display: flex;
    gap: var(--spacing-md);
}

.social-icon {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    transition: var(--transition-fast);
}

.social-icon:hover {
    background: var(--accent-green);
}

/* ========== WhatsApp Button ========== */
.whatsapp-btn {
    position: fixed;
    bottom: 24px;
    right: 24px;
    width: 56px;
    height: 56px;
    background: #25D366;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
    z-index: 999;
    transition: var(--transition-base);
}

.whatsapp-btn:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 24px rgba(37, 211, 102, 0.4);
}

.whatsapp-btn i, .whatsapp-btn svg {
    font-size: 32px;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    fill: white;
}

/* ========== Alertas ========== */
.alert {
    padding: var(--spacing-md);
    border-radius: var(--radius-sm);
    margin-bottom: var(--spacing-lg);
}

.alert-success {
    background: #D1FAE5;
    color: #065F46;
    border: 1px solid #6EE7B7;
}

.alert-error {
    background: #FEE2E2;
    color: #991B1B;
    border: 1px solid #FCA5A5;
}

.alert-info {
    background: #DBEAFE;
    color: #1E40AF;
    border: 1px solid #93C5FD;
}

.alert-warning {
    background: #FEF3C7;
    color: #92400E;
    border: 1px solid #FCD34D;
}

/* ========== Loading ========== */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: white;
    animation: spin 1s ease-in-out infinite;
}

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

/* ========== Responsive ========== */
@media (max-width: 1024px) {
    :root {
        --spacing-xl: 24px;
        --spacing-2xl: 32px;
        --spacing-3xl: 48px;
    }

    .nav-container {
        padding: 0 var(--spacing-lg);
    }
}

@media (max-width: 768px) {
    .nav-shop-name {
        display: none !important;
    }
    
    .mobile-menu-toggle {
        display: block;
        font-size: 24px;
        color: var(--text-primary);
    }

    .nav-menu {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background: var(--bg-card);
        flex-direction: column;
        padding: var(--spacing-lg);
        box-shadow: var(--shadow-md);
        transform: translateY(-100%);
        opacity: 0;
        transition: var(--transition-base);
        pointer-events: none;
    }

    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        pointer-events: all;
    }

    .product-grid {
        grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
        gap: var(--spacing-md);
    }

    .footer-content {
        grid-template-columns: 1fr;
    }

    .footer-bottom {
        flex-direction: column;
        gap: var(--spacing-md);
        text-align: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-md);
    }

    .hero {
        height: 400px;
    }

    .product-grid {
        grid-template-columns: 1fr 1fr;
        gap: var(--spacing-sm);
    }
    
    .product-image {
        height: 180px;
    }
}

/* ========== Animaciones ========== */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeIn 0.6s ease-out;
}

/* ========== Modo oscuro (opcional) ========== */
@media (prefers-color-scheme: dark) {
    /* Implementar si se desea */
}