/* ====================================
   UpServer - Estilos Principales
   www.upserver.cl
   ==================================== */

:root {
    /* Colores principales */
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --primary-light: #3b82f6;
    --secondary: #0f172a;
    --accent: #06b6d4;
    
    /* Grises */
    --gray-50: #f8fafc;
    --gray-100: #f1f5f9;
    --gray-200: #e2e8f0;
    --gray-300: #cbd5e1;
    --gray-400: #94a3b8;
    --gray-500: #64748b;
    --gray-600: #475569;
    --gray-700: #334155;
    --gray-800: #1e293b;
    --gray-900: #0f172a;
    
    /* Estados */
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --info: #3b82f6;
    
    /* Tipografía */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
    
    /* Espaciado */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    
    /* Bordes */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-full: 9999px;
    
    /* Sombras */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
}

/* Reset */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    font-size: 16px;
    line-height: 1.6;
    color: var(--gray-700);
    background-color: var(--gray-50);
    -webkit-font-smoothing: antialiased;
}

/* Tipografía */
h1, h2, h3, h4, h5, h6 {
    color: var(--gray-900);
    font-weight: 700;
    line-height: 1.2;
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }

p { margin-bottom: 1rem; }

a {
    color: var(--primary);
    text-decoration: none;
    transition: color 0.2s;
}

a:hover {
    color: var(--primary-dark);
}

/* Container */
.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

/* ====== HEADER/NAV ====== */
.header {
    background: white;
    border-bottom: 1px solid var(--gray-200);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--primary);
}

.logo-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 700;
}

.nav {
    display: flex;
    align-items: center;
    gap: var(--spacing-xl);
}

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

.nav-links a {
    color: var(--gray-600);
    font-weight: 500;
    padding: var(--spacing-sm) 0;
    position: relative;
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--primary);
}

.nav-links a.active::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--primary);
    border-radius: var(--radius-full);
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

/* Dropdown Menu */
.nav-links li {
    position: relative;
}

.nav-links li.has-dropdown > a {
    cursor: pointer;
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    min-width: 180px;
    background: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    padding: 0.5rem;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.2s, visibility 0.2s;
    z-index: 1000;
    margin-top: 0.5rem;
}

.nav-links li.has-dropdown:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
}

.dropdown-menu a {
    display: block;
    padding: 0.625rem 1rem;
    color: var(--gray-700);
    border-radius: var(--radius-md);
    transition: background 0.15s;
    white-space: nowrap;
}

.dropdown-menu a:hover {
    background: var(--gray-50);
    color: var(--primary);
    text-decoration: none;
}

.dropdown-divider {
    height: 1px;
    background: var(--gray-200);
    margin: 0.5rem 0;
}

.dropdown-menu .dropdown-all {
    text-align: center;
    color: var(--primary);
    font-weight: 500;
}

/* Botones */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: 0.625rem 1.25rem;
    font-size: 0.9375rem;
    font-weight: 600;
    border-radius: var(--radius-md);
    border: none;
    cursor: pointer;
    transition: all 0.2s;
    text-decoration: none;
}

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

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

.btn-secondary {
    background: var(--gray-100);
    color: var(--gray-700);
}

.btn-secondary:hover {
    background: var(--gray-200);
}

.btn-outline {
    background: transparent;
    border: 2px solid var(--primary);
    color: var(--primary);
}

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

.btn-lg {
    padding: 0.875rem 1.75rem;
    font-size: 1rem;
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

.btn-icon {
    width: 40px;
    height: 40px;
    padding: 0;
    border-radius: var(--radius-md);
}

/* ====== HERO ====== */
.hero {
    background: linear-gradient(135deg, var(--secondary) 0%, var(--gray-800) 100%);
    color: white;
    padding: var(--spacing-3xl) 0;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    opacity: 0.5;
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.hero h1 {
    color: white;
    font-size: 3rem;
    margin-bottom: var(--spacing-lg);
}

.hero h1 span {
    background: linear-gradient(135deg, var(--accent), var(--primary-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero p {
    font-size: 1.25rem;
    color: var(--gray-300);
    margin-bottom: var(--spacing-xl);
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
}

.hero-features {
    display: flex;
    justify-content: center;
    gap: var(--spacing-xl);
    margin-top: var(--spacing-2xl);
    flex-wrap: wrap;
}

.hero-feature {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--gray-300);
    font-size: 0.9375rem;
}

.hero-feature svg {
    color: var(--success);
}

/* ====== PLANES ====== */
.section {
    padding: var(--spacing-3xl) 0;
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
}

.section-header h2 {
    margin-bottom: var(--spacing-sm);
}

.section-header p {
    color: var(--gray-500);
    font-size: 1.125rem;
}

.plans-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
}

.plan-card {
    background: white;
    border-radius: var(--radius-xl);
    border: 1px solid var(--gray-200);
    padding: var(--spacing-xl);
    position: relative;
    transition: all 0.3s;
}

.plan-card:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}

.plan-card.featured {
    border-color: var(--primary);
    box-shadow: var(--shadow-lg);
}

.plan-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--primary);
    color: white;
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
}

.plan-name {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
}

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

.plan-spec {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) 0;
    color: var(--gray-600);
    font-size: 0.9375rem;
}

.plan-spec svg {
    color: var(--primary);
    flex-shrink: 0;
}

.plan-price {
    text-align: center;
    padding: var(--spacing-lg) 0;
    border-top: 1px solid var(--gray-100);
    border-bottom: 1px solid var(--gray-100);
    margin-bottom: var(--spacing-lg);
}

.plan-price .amount {
    font-size: 2rem;
    font-weight: 800;
    color: var(--gray-900);
}

.plan-price .currency {
    font-size: 1rem;
    color: var(--gray-500);
}

.plan-price .period {
    font-size: 0.875rem;
    color: var(--gray-500);
}

.plan-card .btn {
    width: 100%;
}

/* ====== FEATURES ====== */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
}

.feature-card {
    text-align: center;
    padding: var(--spacing-xl);
}

.feature-icon {
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, var(--primary-light), var(--accent));
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-lg);
    color: white;
}

.feature-card h3 {
    margin-bottom: var(--spacing-sm);
}

.feature-card p {
    color: var(--gray-500);
}

/* ====== CONFIGURADOR ====== */
.configurator {
    display: grid;
    grid-template-columns: 1fr 380px;
    gap: var(--spacing-xl);
}

@media (max-width: 1024px) {
    .configurator {
        grid-template-columns: 1fr;
    }
}

.config-section {
    background: white;
    border-radius: var(--radius-xl);
    border: 1px solid var(--gray-200);
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-lg);
}

.config-section h3 {
    margin-bottom: var(--spacing-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.config-section h3 svg {
    color: var(--primary);
}

/* Slider de recursos */
.resource-slider {
    margin-bottom: var(--spacing-xl);
}

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

.resource-label {
    font-weight: 600;
    color: var(--gray-700);
}

.resource-value {
    font-weight: 700;
    color: var(--primary);
    font-size: 1.125rem;
}

.slider {
    -webkit-appearance: none;
    width: 100%;
    height: 8px;
    border-radius: var(--radius-full);
    background: var(--gray-200);
    outline: none;
}

.slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: var(--primary);
    cursor: pointer;
    border: 3px solid white;
    box-shadow: var(--shadow-md);
}

.slider::-moz-range-thumb {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: var(--primary);
    cursor: pointer;
    border: 3px solid white;
    box-shadow: var(--shadow-md);
}

.slider-marks {
    display: flex;
    justify-content: space-between;
    margin-top: var(--spacing-xs);
    font-size: 0.75rem;
    color: var(--gray-400);
}

/* Radio buttons personalizados */
.radio-group {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.radio-option {
    flex: 1;
    min-width: 100px;
}

.radio-option input {
    display: none;
}

.radio-option label {
    display: block;
    padding: var(--spacing-md);
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-md);
    text-align: center;
    cursor: pointer;
    transition: all 0.2s;
}

.radio-option input:checked + label {
    border-color: var(--primary);
    background: rgba(37, 99, 235, 0.05);
}

.radio-option label:hover {
    border-color: var(--primary-light);
}

/* Datacenter cards */
.datacenter-options {
    display: grid;
    gap: var(--spacing-md);
}

.datacenter-option {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all 0.2s;
}

.datacenter-option:hover,
.datacenter-option.selected {
    border-color: var(--primary);
}

.datacenter-option.selected {
    background: rgba(37, 99, 235, 0.05);
}

.datacenter-flag {
    font-size: 2rem;
}

.datacenter-info h4 {
    font-size: 1rem;
    margin-bottom: 2px;
}

.datacenter-info p {
    font-size: 0.875rem;
    color: var(--gray-500);
    margin: 0;
}

/* OS Grid */
.os-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: var(--spacing-md);
}

.os-option {
    padding: var(--spacing-md);
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-lg);
    text-align: center;
    cursor: pointer;
    transition: all 0.2s;
}

.os-option:hover,
.os-option.selected {
    border-color: var(--primary);
}

.os-option.selected {
    background: rgba(37, 99, 235, 0.05);
}

.os-option img {
    width: 48px;
    height: 48px;
    margin-bottom: var(--spacing-sm);
}

.os-option span {
    display: block;
    font-weight: 500;
    font-size: 0.875rem;
}

/* Summary Card */
.summary-card {
    background: white;
    border-radius: var(--radius-xl);
    border: 1px solid var(--gray-200);
    padding: var(--spacing-xl);
    position: sticky;
    top: 100px;
}

.summary-card h3 {
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--gray-100);
}

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

.summary-spec {
    display: flex;
    justify-content: space-between;
    padding: var(--spacing-sm) 0;
    font-size: 0.9375rem;
}

.summary-spec .label {
    color: var(--gray-500);
}

.summary-spec .value {
    font-weight: 600;
    color: var(--gray-900);
}

.summary-divider {
    height: 1px;
    background: var(--gray-100);
    margin: var(--spacing-md) 0;
}

.summary-total {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    margin-bottom: var(--spacing-lg);
}

.summary-total .label {
    font-size: 1rem;
    font-weight: 600;
}

.summary-total .amount {
    font-size: 1.75rem;
    font-weight: 800;
    color: var(--primary);
}

.summary-total .period {
    font-size: 0.875rem;
    color: var(--gray-500);
    font-weight: normal;
}

.summary-card .btn {
    width: 100%;
    margin-bottom: var(--spacing-md);
}

.summary-note {
    text-align: center;
    font-size: 0.875rem;
    color: var(--gray-500);
}

/* ====== CHECKOUT ====== */
.checkout-steps {
    display: flex;
    justify-content: center;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-2xl);
}

.checkout-step {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--gray-400);
}

.checkout-step.active {
    color: var(--primary);
}

.checkout-step.completed {
    color: var(--success);
}

.step-number {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    border: 2px solid currentColor;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 0.875rem;
}

.checkout-step.active .step-number,
.checkout-step.completed .step-number {
    background: currentColor;
    color: white;
}

.step-connector {
    width: 60px;
    height: 2px;
    background: var(--gray-200);
}

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

.form-label {
    display: block;
    margin-bottom: var(--spacing-sm);
    font-weight: 500;
    color: var(--gray-700);
}

.form-input {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-md);
    font-size: 1rem;
    transition: border-color 0.2s;
}

.form-input:focus {
    outline: none;
    border-color: var(--primary);
}

.form-input::placeholder {
    color: var(--gray-400);
}

.form-hint {
    font-size: 0.875rem;
    color: var(--gray-500);
    margin-top: var(--spacing-xs);
}

/* Payment methods */
.payment-methods {
    display: grid;
    gap: var(--spacing-md);
}

.payment-method {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all 0.2s;
}

.payment-method:hover,
.payment-method.selected {
    border-color: var(--primary);
}

.payment-method.selected {
    background: rgba(37, 99, 235, 0.05);
}

.payment-method input {
    display: none;
}

.payment-icon {
    width: 48px;
    height: 32px;
    object-fit: contain;
}

.payment-info h4 {
    font-size: 1rem;
    margin-bottom: 2px;
}

.payment-info p {
    font-size: 0.875rem;
    color: var(--gray-500);
    margin: 0;
}

/* ====== FOOTER ====== */
.footer {
    background: var(--secondary);
    color: var(--gray-400);
    padding: var(--spacing-3xl) 0 var(--spacing-xl);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--spacing-2xl);
    margin-bottom: var(--spacing-2xl);
}

@media (max-width: 768px) {
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
}

.footer-brand {
    max-width: 300px;
}

.footer-brand .logo {
    margin-bottom: var(--spacing-md);
}

.footer-brand p {
    font-size: 0.9375rem;
    margin-bottom: var(--spacing-lg);
}

.footer h4 {
    color: white;
    font-size: 1rem;
    margin-bottom: var(--spacing-lg);
}

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

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

.footer-links a {
    color: var(--gray-400);
    font-size: 0.9375rem;
    transition: color 0.2s;
}

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

.footer-bottom {
    padding-top: var(--spacing-xl);
    border-top: 1px solid var(--gray-800);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.footer-bottom p {
    font-size: 0.875rem;
    margin: 0;
}

/* ====== UTILIDADES ====== */
.text-center { text-align: center; }
.text-primary { color: var(--primary); }
.text-success { color: var(--success); }
.text-muted { color: var(--gray-500); }

.mt-1 { margin-top: var(--spacing-sm); }
.mt-2 { margin-top: var(--spacing-md); }
.mt-3 { margin-top: var(--spacing-lg); }
.mt-4 { margin-top: var(--spacing-xl); }

.mb-1 { margin-bottom: var(--spacing-sm); }
.mb-2 { margin-bottom: var(--spacing-md); }
.mb-3 { margin-bottom: var(--spacing-lg); }
.mb-4 { margin-bottom: var(--spacing-xl); }

.bg-white { background: white; }
.bg-gray { background: var(--gray-50); }

/* Responsive */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 2rem;
    }
    
    .nav-links {
        display: none;
    }
    
    .mobile-menu-btn {
        display: block;
    }
    
    .plans-grid {
        grid-template-columns: 1fr;
    }
    
    .configurator {
        grid-template-columns: 1fr;
    }
    
    .summary-card {
        position: relative;
        top: 0;
    }
}

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

.fade-in {
    animation: fadeIn 0.5s ease-out;
}

/* Loading */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid var(--gray-200);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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