/* ===== VARIABLES CSS ===== */
:root {
    --primary-color: #2563eb;
    --primary-dark: #1d4ed8;
    --secondary-color: #64748b;
    --accent-color: #f59e0b;
    --success-color: #10b981;
    --danger-color: #ef4444;
    --warning-color: #f59e0b;
    --info-color: #3b82f6;
    
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --text-light: #94a3b8;
    
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-dark: #0f172a;
    
    --border-color: #e2e8f0;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1);
    
    --border-radius: 12px;
    --border-radius-lg: 16px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ===== RESET Y BASE ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-primary);
}

/* ===== HERO SECTION ===== */
.hero-section {
    position: relative;
    min-height: 100vh;
    /* Restaurar la imagen de fondo del almacén con un overlay oscuro */
    background: linear-gradient(rgba(0, 0, 0, 0.6), rgba(0, 0, 0, 0.6)), url('../assets/arum-visuals-VnMbc9Szs-E-unsplash.jpg') no-repeat center center;
    background-size: cover; /* Asegura que la imagen cubra toda la sección */
    display: flex;
    align-items: center;
    overflow: hidden;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(15, 23, 42, 0.7);
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
    color: white;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 1.5rem;
}

.text-gradient {
    background: linear-gradient(135deg, #fbbf24, #f59e0b);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.25rem;
    font-weight: 400;
    margin-bottom: 2rem;
    opacity: 0.9;
    max-width: 600px;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.hero-buttons .btn {
    padding: 0.875rem 2rem;
    font-weight: 600;
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.hero-buttons .btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

/* ===== DASHBOARD PREVIEW ===== */
.hero-visual {
    position: relative;
    z-index: 2;
}

.dashboard-preview {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--border-radius-lg);
    padding: 1.5rem;
    box-shadow: var(--shadow-xl);
}

.dashboard-header {
    margin-bottom: 1.5rem;
}

.dashboard-nav {
    display: flex;
    gap: 1rem;
    margin-bottom: 1rem;
}

.nav-item {
    padding: 0.5rem 1rem;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--border-radius);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
}

.nav-item.active {
    background: rgba(255, 255, 255, 0.2);
    color: white;
}

.dashboard-content {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
}

.metric-card {
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--border-radius);
    padding: 1rem;
    text-align: center;
    color: white;
}

.metric-icon {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.metric-value {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 0.25rem;
}

.metric-label {
    font-size: 0.75rem;
    opacity: 0.8;
}

/* ===== SECTIONS ===== */
.section-title {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* ===== DUAL SYSTEM CARDS ===== */
.system-card {
    background: var(--bg-primary);
    border-radius: var(--border-radius-lg);
    padding: 2rem;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
    transition: var(--transition);
    height: 100%;
}

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

.system-card.operational {
    border-left: 4px solid var(--primary-color);
}

.system-card.commercial {
    border-left: 4px solid var(--accent-color);
}

.card-header {
    text-align: center;
    margin-bottom: 2rem;
}

.icon-wrapper {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1rem;
    color: white;
    font-size: 2rem;
}

.system-card.commercial .icon-wrapper {
    background: linear-gradient(135deg, var(--accent-color), #d97706);
}

.card-header h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.feature-list {
    list-style: none;
    padding: 0;
}

.feature-list li {
    display: flex;
    align-items: center;
    margin-bottom: 0.75rem;
    font-size: 0.95rem;
    color: var(--text-secondary);
}

.feature-list i {
    margin-right: 0.75rem;
    font-size: 1rem;
}

/* ===== FEATURE CARDS ===== */
.features-section {
    background: var(--bg-secondary);
}

.feature-card {
    background: var(--bg-primary);
    border-radius: var(--border-radius);
    padding: 2rem;
    text-align: center;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
    transition: var(--transition);
    height: 100%;
}

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

.feature-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    color: white;
    font-size: 2rem;
}

.feature-card h4 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.feature-card p {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* ===== PLANS SECTION ===== */
.plans-section {
    background: var(--bg-primary);
}

.plan-card {
    background: var(--bg-primary);
    border-radius: var(--border-radius-lg);
    padding: 2rem;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
    transition: var(--transition);
    height: 100%;
    position: relative;
    overflow: hidden;
}

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

.plan-card.popular {
    border: 2px solid var(--accent-color);
    transform: scale(1.05);
}

.popular-badge {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: var(--accent-color);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: var(--border-radius);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
}

.plan-header {
    text-align: center;
    margin-bottom: 2rem;
}

.plan-name {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.plan-price {
    margin-bottom: 1rem;
}

.price-amount {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--primary-color);
}

.price-period {
    font-size: 1rem;
    color: var(--text-secondary);
    margin-left: 0.5rem;
}

.plan-description {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.plan-features {
    margin-bottom: 2rem;
}

.features-title {
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.features-list {
    list-style: none;
    padding: 0;
}

.features-list li {
    display: flex;
    align-items: center;
    margin-bottom: 0.75rem;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.features-list i {
    margin-right: 0.75rem;
    color: var(--success-color);
    font-size: 1rem;
}

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

.plan-action .btn {
    width: 100%;
    padding: 1rem;
    font-weight: 600;
    border-radius: var(--border-radius);
}

/* ===== CTA SECTION ===== */
.cta-section {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
}

.cta-title {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 1rem;
}

.cta-subtitle {
    font-size: 1.125rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.cta-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.cta-buttons .btn {
    padding: 1rem 2rem;
    font-weight: 600;
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.cta-buttons .btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

/* ===== FOOTER ===== */
.footer-section {
    background: var(--bg-dark);
    color: white;
    padding: 3rem 0;
}

.footer-brand {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.footer-description {
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 0;
}

.footer-copyright {
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 0.5rem;
}

.footer-powered {
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.875rem;
    margin-bottom: 0;
}

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 768px) {
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-buttons {
        flex-direction: column;
    }
    
    .hero-buttons .btn {
        width: 100%;
    }
    
    .dashboard-content {
        grid-template-columns: 1fr;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .cta-title {
        font-size: 2rem;
    }
    
    .cta-buttons {
        flex-direction: column;
    }
    
    .cta-buttons .btn {
        width: 100%;
    }
}

@media (max-width: 576px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .system-card,
    .feature-card,
    .plan-card {
        padding: 1.5rem;
    }
    
    .icon-wrapper {
        width: 60px;
        height: 60px;
        font-size: 1.5rem;
    }
}

/* ===== ANIMATIONS ===== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-content,
.system-card,
.feature-card,
.plan-card {
    animation: fadeInUp 0.6s ease-out;
}

/* ===== UTILITY CLASSES ===== */
.btn {
    text-decoration: none;
    display: inline-block;
    font-weight: 500;
    text-align: center;
    vertical-align: middle;
    cursor: pointer;
    user-select: none;
    border: 1px solid transparent;
    transition: var(--transition);
}

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

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

.btn-outline-light {
    background-color: transparent;
    border-color: rgba(255, 255, 255, 0.5);
    color: white;
}

.btn-outline-light:hover {
    background-color: white;
    border-color: white;
    color: var(--text-primary);
}

.btn-lg {
    padding: 0.875rem 2rem;
    font-size: 1.125rem;
    border-radius: var(--border-radius);
}

/* ===== SCROLL BEHAVIOR ===== */
html {
    scroll-behavior: smooth;
}

/* ===== FOCUS STATES ===== */
.btn:focus,
.nav-item:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}