/* ============================================
   MortgageIQ - Professional Mortgage Calculator
   Modern, Elegant & Responsive Design
   ============================================ */

/* === CSS Variables === */
:root {
    /* Colores principales - Azul corporativo profesional */
    --primary-50: #eff6ff;
    --primary-100: #dbeafe;
    --primary-200: #bfdbfe;
    --primary-300: #93c5fd;
    --primary-400: #60a5fa;
    --primary-500: #3b82f6;
    --primary-600: #2563eb;
    --primary-700: #1d4ed8;
    --primary-800: #1e40af;
    --primary-900: #1e3a8a;
    
    /* Colores secundarios */
    --success-500: #10b981;
    --success-600: #059669;
    --success-700: #047857;
    --danger-500: #ef4444;
    --danger-600: #dc2626;
    --warning-500: #f59e0b;
    --warning-600: #d97706;
    --info-500: #06b6d4;
    --info-600: #0891b2;
    
    /* Grises neutros */
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;
    
    /* Tema claro (default) - Colores profesionales */
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-tertiary: #f1f5f9;
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-tertiary: #64748b;
    --border-color: #e2e8f0;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    
    /* Colores de acento */
    --accent-gradient: linear-gradient(135deg, #3b82f6 0%, #1d4ed8 100%);
    --success-gradient: linear-gradient(135deg, #10b981 0%, #059669 100%);
    --danger-gradient: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
    
    /* 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-2xl: 1.5rem;
    --radius-3xl: 2rem;
    
    /* Transiciones */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 300ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* Tema oscuro */
[data-theme="dark"] {
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-tertiary: #334155;
    --text-primary: #f1f5f9;
    --text-secondary: #cbd5e1;
    --text-tertiary: #94a3b8;
    --border-color: #334155;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.5);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.6), 0 2px 4px -1px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.7), 0 4px 6px -2px rgba(0, 0, 0, 0.5);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.8), 0 10px 10px -5px rgba(0, 0, 0, 0.6);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.9);
}

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

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

/* === Loading Screen === */
.loading-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--accent-gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    transition: opacity var(--transition-slow), visibility var(--transition-slow);
}

.loading-screen.hidden {
    opacity: 0;
    visibility: hidden;
}

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

.loader {
    width: 50px;
    height: 50px;
    border: 4px solid rgba(255, 255, 255, 0.2);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin: 0 auto 1rem;
}

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

.loader-text {
    color: white;
    font-size: 1rem;
    font-weight: 500;
}

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

/* === Navigation === */
.navbar {
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(12px);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
}

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

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

.brand-icon {
    flex-shrink: 0;
}

.brand-text {
    display: flex;
    flex-direction: column;
}

.brand-name {
    font-size: 1.5rem;
    font-weight: 800;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.2;
}

.brand-tagline {
    font-size: 0.75rem;
    color: var(--text-secondary);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.nav-actions {
    display: flex;
    gap: var(--spacing-sm);
}

.btn-icon {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--border-color);
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition-fast);
    color: var(--text-primary);
}

.btn-icon:hover {
    background: var(--bg-tertiary);
    border-color: var(--primary-300);
    transform: scale(1.05);
}

.theme-icon {
    transition: opacity var(--transition-fast);
}

.theme-icon.hidden {
    display: none;
}

/* === Hero Section === */
.hero {
    background: var(--accent-gradient);
    padding: var(--spacing-2xl) 0;
    position: relative;
    overflow: hidden;
    margin-bottom: var(--spacing-lg);
}

.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='0.05'%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: 0.4;
}

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

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-lg);
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    border-radius: 9999px;
    color: white;
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: var(--spacing-lg);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.hero-title {
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 800;
    color: white;
    margin-bottom: var(--spacing-lg);
    line-height: 1.1;
}

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

.hero-description {
    font-size: 1.125rem;
    color: rgba(255, 255, 255, 0.95);
    margin-bottom: var(--spacing-xl);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.7;
}

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

.feature-badge {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-lg);
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    border-radius: var(--radius-lg);
    color: white;
    font-size: 0.875rem;
    font-weight: 600;
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: all var(--transition-fast);
}

.feature-badge:hover {
    background: rgba(255, 255, 255, 0.25);
    transform: translateY(-2px);
}

/* === Main Content === */
.main-content {
    margin-top: 0;
    padding: var(--spacing-xl) 0 var(--spacing-2xl) 0;
    position: relative;
    z-index: 2;
}

.calculator-layout {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
    max-width: 600px;
    margin: 0 auto;
    transition: all var(--transition-base);
}

/* Cuando aparecen los resultados, cambiar a 2 columnas */
.calculator-layout.show-results {
    grid-template-columns: 1fr 1fr;
    max-width: 1200px;
}

/* === Calculator Panel === */
.calculator-panel {
    background: var(--bg-primary);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-xl);
    padding: var(--spacing-xl);
    border: 1px solid var(--border-color);
    height: fit-content;
}

.panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-xl);
    padding-bottom: var(--spacing-lg);
    border-bottom: 2px solid var(--border-color);
}

.panel-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
}

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

.currency-label {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-secondary);
}

.currency-selector {
    padding: var(--spacing-sm) var(--spacing-md);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    background: var(--bg-secondary);
    color: var(--text-primary);
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
    outline: none;
}

.currency-selector:hover {
    border-color: var(--primary-400);
}

.currency-selector:focus {
    border-color: var(--primary-600);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

/* === Form === */
.calculator-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
}

.form-label {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: 600;
    color: var(--text-primary);
    font-size: 0.875rem;
}

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

.label-content svg {
    color: var(--primary-600);
}

.field-info {
    font-size: 0.875rem;
    font-weight: 700;
    color: var(--primary-700);
    background: var(--primary-50);
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
}

[data-theme="dark"] .field-info {
    background: rgba(59, 130, 246, 0.2);
    color: var(--primary-400);
}

.tooltip-icon {
    cursor: help;
    color: var(--text-tertiary);
    position: relative;
    display: inline-flex;
    transition: color var(--transition-fast);
}

.tooltip-icon:hover {
    color: var(--primary-600);
}

.tooltip-icon[data-tooltip]:hover::after {
    content: attr(data-tooltip);
    position: absolute;
    bottom: calc(100% + 8px);
    right: 0;
    background: var(--gray-900);
    color: white;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    font-size: 0.75rem;
    white-space: nowrap;
    max-width: 200px;
    white-space: normal;
    z-index: 10;
    box-shadow: var(--shadow-lg);
    font-weight: 400;
}

.input-group {
    position: relative;
    display: flex;
    align-items: center;
}

.input-group.calculated {
    background: var(--bg-tertiary);
    border-radius: var(--radius-lg);
}

.input-prefix,
.input-suffix {
    position: absolute;
    font-weight: 700;
    color: var(--text-secondary);
    font-size: 1rem;
    pointer-events: none;
    user-select: none;
}

.input-prefix {
    left: var(--spacing-lg);
}

.input-suffix {
    right: var(--spacing-lg);
}

.form-input {
    width: 100%;
    padding: 1rem 3rem;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-lg);
    font-size: 1rem;
    font-weight: 600;
    background: var(--bg-secondary);
    color: var(--text-primary);
    transition: all var(--transition-fast);
    outline: none;
}

.form-input:hover {
    border-color: var(--primary-300);
}

.form-input:focus {
    border-color: var(--primary-600);
    background: var(--bg-primary);
    box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.1);
}

.form-input:read-only {
    cursor: not-allowed;
    background: var(--bg-tertiary);
    border-color: transparent;
}

.calculated-badge {
    position: absolute;
    right: var(--spacing-lg);
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--primary-700);
    background: var(--primary-50);
    padding: 0.25rem 0.5rem;
    border-radius: var(--radius-sm);
}

[data-theme="dark"] .calculated-badge {
    background: rgba(59, 130, 246, 0.2);
    color: var(--primary-400);
}

/* === Sliders === */
.input-slider {
    margin-top: var(--spacing-sm);
}

.slider {
    width: 100%;
    height: 6px;
    border-radius: 9999px;
    background: var(--bg-tertiary);
    outline: none;
    -webkit-appearance: none;
    appearance: none;
    cursor: pointer;
}

.slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--primary-600);
    cursor: pointer;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-fast);
}

.slider::-webkit-slider-thumb:hover {
    transform: scale(1.2);
    background: var(--primary-700);
}

.slider::-moz-range-thumb {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--primary-600);
    cursor: pointer;
    border: none;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-fast);
}

.slider::-moz-range-thumb:hover {
    transform: scale(1.2);
    background: var(--primary-700);
}

/* === Calculate Button === */
.btn-calculate {
    width: 100%;
    padding: 1rem 2rem;
    background: var(--accent-gradient);
    color: white;
    border: none;
    border-radius: var(--radius-lg);
    font-size: 1rem;
    font-weight: 700;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    transition: all var(--transition-fast);
    box-shadow: var(--shadow-md);
    margin-top: var(--spacing-md);
}

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

.btn-calculate:active {
    transform: translateY(0);
}

/* === Results Panel === */
.results-panel {
    background: var(--bg-primary);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-xl);
    padding: var(--spacing-xl);
    border: 1px solid var(--border-color);
    animation: slideIn var(--transition-slow);
}

.results-panel.hidden {
    display: none;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.result-hero {
    background: var(--success-gradient);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
    position: relative;
    overflow: hidden;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.result-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='0.1'%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: 0.3;
}

.result-hero-content {
    position: relative;
    z-index: 1;
    color: white;
}

.result-hero-label {
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--spacing-sm);
    opacity: 0.9;
}

.result-hero-amount {
    display: flex;
    align-items: baseline;
    gap: 0.25rem;
    margin-bottom: var(--spacing-sm);
}

.result-currency {
    font-size: 1.5rem;
    font-weight: 700;
}

.result-amount {
    font-size: clamp(2.5rem, 5vw, 3.5rem);
    font-weight: 800;
    line-height: 1;
}

.result-hero-subtitle {
    font-size: 0.875rem;
    opacity: 0.9;
}

.result-hero-icon {
    position: relative;
    z-index: 1;
    opacity: 0.2;
}

/* === Metrics Grid === */
.metrics-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.metric-card {
    background: var(--bg-secondary);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    transition: all var(--transition-fast);
}

.metric-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    border-color: var(--primary-200);
}

.metric-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.metric-icon.primary {
    background: var(--primary-100);
    color: var(--primary-700);
}

.metric-icon.success {
    background: rgba(16, 185, 129, 0.1);
    color: var(--success-600);
}

.metric-icon.danger {
    background: rgba(239, 68, 68, 0.1);
    color: var(--danger-600);
}

.metric-icon.warning {
    background: rgba(245, 158, 11, 0.1);
    color: var(--warning-600);
}

[data-theme="dark"] .metric-icon.primary {
    background: rgba(59, 130, 246, 0.2);
    color: var(--primary-400);
}

.metric-content {
    flex: 1;
    min-width: 0;
}

.metric-label {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-secondary);
    margin-bottom: 0.25rem;
}

.metric-value {
    font-size: 1.25rem;
    font-weight: 800;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.metric-value.danger {
    color: var(--danger-600);
}

/* === Chart Card === */
.chart-card {
    background: var(--bg-secondary);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.chart-title {
    font-size: 1rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-lg);
}

.breakdown-bar-container {
    margin-bottom: var(--spacing-lg);
}

.breakdown-bar {
    height: 60px;
    display: flex;
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    position: relative;
}

.bar-segment {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: width 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.bar-principal {
    background: var(--success-gradient);
}

.bar-interest {
    background: var(--danger-gradient);
}

.bar-label {
    color: white;
    font-weight: 700;
    font-size: 0.875rem;
}

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

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

.legend-indicator {
    width: 16px;
    height: 16px;
    border-radius: var(--radius-sm);
    flex-shrink: 0;
}

.legend-indicator.principal {
    background: var(--success-500);
}

.legend-indicator.interest {
    background: var(--danger-500);
}

.legend-text {
    flex: 1;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.legend-label {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-primary);
}

.legend-value {
    font-size: 0.875rem;
    font-weight: 700;
    color: var(--text-secondary);
}

/* === Amortization Section === */
.amortization-section {
    margin-top: var(--spacing-xl);
}

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

.section-title-small {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--text-primary);
}

.btn-toggle {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--bg-secondary);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    cursor: pointer;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-primary);
    transition: all var(--transition-fast);
}

.btn-toggle:hover {
    background: var(--bg-tertiary);
    border-color: var(--primary-300);
}

.btn-toggle svg {
    transition: transform var(--transition-fast);
}

.btn-toggle.active svg {
    transform: rotate(180deg);
}

.amortization-table-container {
    background: var(--bg-secondary);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    animation: slideIn var(--transition-base);
}

.amortization-table-container.hidden {
    display: none;
}

.table-scroll {
    overflow-x: auto;
    margin-bottom: var(--spacing-lg);
    border-radius: var(--radius-md);
}

.amortization-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--bg-primary);
    font-size: 0.875rem;
}

.amortization-table thead {
    background: var(--primary-600);
    color: white;
    position: sticky;
    top: 0;
    z-index: 1;
}

.amortization-table th,
.amortization-table td {
    padding: var(--spacing-md);
    text-align: right;
    border-bottom: 1px solid var(--border-color);
}

.amortization-table th:first-child,
.amortization-table td:first-child {
    text-align: left;
    font-weight: 600;
}

.amortization-table tbody tr:hover {
    background: var(--bg-secondary);
}

.amortization-table tbody tr:nth-child(12n) {
    border-bottom: 2px solid var(--primary-200);
}

/* === CTA Card === */
.cta-card {
    background: var(--accent-gradient);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: var(--spacing-xl);
    gap: var(--spacing-lg);
    position: relative;
    overflow: hidden;
}

.cta-card::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='0.05'%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: 0.3;
}

.cta-content {
    color: white;
    position: relative;
    z-index: 1;
}

.cta-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
}

.cta-description {
    font-size: 0.9375rem;
    opacity: 0.95;
}

.btn-cta {
    padding: 1rem 2rem;
    background: white;
    color: var(--primary-700);
    border: none;
    border-radius: var(--radius-lg);
    font-size: 1rem;
    font-weight: 700;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    white-space: nowrap;
    transition: all var(--transition-fast);
    box-shadow: var(--shadow-md);
    position: relative;
    z-index: 1;
}

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

/* === Result Actions === */
.result-actions {
    display: flex;
    gap: var(--spacing-md);
}

.btn-secondary {
    flex: 1;
    padding: 0.875rem 1.5rem;
    background: var(--bg-secondary);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-primary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    transition: all var(--transition-fast);
}

.btn-secondary:hover {
    background: var(--bg-tertiary);
    border-color: var(--primary-300);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* === Ad Containers === */
.ad-container {
    max-width: 728px;
    margin: var(--spacing-xl) auto;
    min-height: 90px;
}

.ad-placeholder {
    background: var(--bg-secondary);
    border: 2px dashed var(--border-color);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 90px;
}

.ad-label {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* === Trust Section === */
.trust-section {
    padding: var(--spacing-2xl) 0;
    background: var(--bg-primary);
}

.trust-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-xl);
}

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

.trust-number {
    font-size: 2.5rem;
    font-weight: 800;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--spacing-sm);
}

.trust-label {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    font-weight: 600;
}

/* === Info Section === */
.info-section {
    padding: var(--spacing-2xl) 0;
}

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

.section-title {
    font-size: clamp(2rem, 4vw, 2.5rem);
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
}

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

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

.feature-card {
    background: var(--bg-primary);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    transition: all var(--transition-base);
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-200);
}

.feature-icon {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-lg);
    color: white;
}

.feature-icon.gradient-1 {
    background: linear-gradient(135deg, #3b82f6, #2563eb);
}

.feature-icon.gradient-2 {
    background: linear-gradient(135deg, #10b981, #059669);
}

.feature-icon.gradient-3 {
    background: linear-gradient(135deg, #f59e0b, #d97706);
}

.feature-icon.gradient-4 {
    background: linear-gradient(135deg, #ef4444, #dc2626);
}

.feature-icon.gradient-5 {
    background: linear-gradient(135deg, #06b6d4, #0891b2);
}

.feature-icon.gradient-6 {
    background: linear-gradient(135deg, #8b5cf6, #7c3aed);
}

.feature-title {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

.feature-description {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* === Related Tools === */
.related-tools {
    padding: var(--spacing-2xl) 0;
}

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

.tool-card {
    background: var(--bg-primary);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    text-decoration: none;
    transition: all var(--transition-fast);
    display: block;
}

.tool-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-300);
}

.tool-icon {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-md);
}

.tool-card h3 {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

.tool-card p {
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

/* === FAQ Section === */
.faq-section {
    padding: var(--spacing-2xl) 0;
    background: var(--bg-primary);
}

.faq-container {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: var(--bg-secondary);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-md);
    transition: all var(--transition-fast);
    overflow: hidden;
}

.faq-item:hover {
    border-color: var(--primary-300);
}

.faq-item[open] {
    border-color: var(--primary-600);
    box-shadow: var(--shadow-md);
}

.faq-question {
    padding: var(--spacing-lg);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: 600;
    color: var(--text-primary);
    user-select: none;
}

.faq-icon {
    flex-shrink: 0;
    transition: transform var(--transition-fast);
    color: var(--primary-600);
}

.faq-item[open] .faq-icon {
    transform: rotate(180deg);
}

.faq-answer {
    padding: 0 var(--spacing-lg) var(--spacing-lg);
    color: var(--text-secondary);
    line-height: 1.7;
}

.faq-answer p {
    margin: 0;
}

/* === Footer === */
.footer {
    background: var(--bg-primary);
    border-top: 1px solid var(--border-color);
    padding: var(--spacing-2xl) 0;
    margin-top: var(--spacing-2xl);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-xl);
    padding-bottom: var(--spacing-xl);
    border-bottom: 1px solid var(--border-color);
}

.footer-brand {
    flex: 1;
}

.footer-logo {
    font-size: 1.25rem;
    font-weight: 800;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.25rem;
}

.footer-tagline {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

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

.footer-link {
    font-size: 0.875rem;
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: color var(--transition-fast);
}

.footer-link:hover {
    color: var(--primary-600);
}

.footer-separator {
    color: var(--text-tertiary);
}

.footer-disclaimer {
    background: var(--bg-secondary);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.footer-disclaimer svg {
    flex-shrink: 0;
    color: var(--warning-500);
    margin-top: 0.125rem;
}

.footer-disclaimer p {
    font-size: 0.8125rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin: 0;
}

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

.footer-copyright p {
    font-size: 0.875rem;
    color: var(--text-tertiary);
}

/* === Responsive === */
@media (max-width: 1024px) {
    .calculator-layout,
    .calculator-layout.show-results {
        grid-template-columns: 1fr;
        max-width: 600px;
    }
    
    .calculator-panel {
        position: static;
    }
}

@media (max-width: 768px) {
    .container {
        padding: 0 var(--spacing-md);
    }
    
    .navbar-content {
        padding: var(--spacing-md) 0;
    }
    
    .brand-tagline {
        display: none;
    }
    
    .hero {
        padding: var(--spacing-xl) 0;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-features {
        flex-direction: column;
    }
    
    .calculator-panel,
    .results-panel {
        padding: var(--spacing-lg);
    }
    
    .panel-header {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-md);
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .metrics-grid {
        grid-template-columns: 1fr;
    }
    
    .result-hero {
        flex-direction: column;
        text-align: center;
    }
    
    .result-hero-icon {
        display: none;
    }
    
    .cta-card {
        flex-direction: column;
        text-align: center;
    }
    
    .result-actions {
        flex-direction: column;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .trust-stats {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .tools-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        flex-direction: column;
        gap: var(--spacing-lg);
        text-align: center;
    }
    
    .footer-links {
        flex-wrap: wrap;
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .result-amount {
        font-size: 2rem;
    }
    
    .result-currency {
        font-size: 1rem;
    }
    
    .trust-number {
        font-size: 2rem;
    }
    
    .trust-stats {
        grid-template-columns: 1fr;
    }
}

/* === Animations === */
@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

/* === Print Styles === */
@media print {
    .navbar,
    .hero,
    .ad-container,
    .info-section,
    .faq-section,
    .footer,
    .btn-calculate,
    .result-actions,
    .cta-card,
    .trust-section,
    .related-tools {
        display: none;
    }
    
    .calculator-panel,
    .results-panel {
        box-shadow: none;
        border: 1px solid #000;
    }
    
    .calculator-layout {
        display: block;
    }
}

/* ============================================
   AMORTIZATION SCHEDULE
   ============================================ */

.amortization-section {
    margin-top: var(--spacing-xl);
}

.section-header-small {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-lg);
    gap: var(--spacing-md);
}

.section-title-small {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0;
}

.btn-toggle {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--bg-secondary);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    font-size: 0.875rem;
}

.btn-toggle:hover {
    background: var(--bg-tertiary);
    border-color: var(--primary-500);
}

.btn-toggle.active {
    background: var(--primary-50);
    border-color: var(--primary-500);
    color: var(--primary-600);
}

[data-theme="dark"] .btn-toggle.active {
    background: rgba(59, 130, 246, 0.15);
    color: var(--primary-400);
}

.btn-toggle svg {
    transition: transform 0.3s;
}

.btn-toggle.active svg {
    transform: rotate(180deg);
}

/* Table Container */
.amortization-table-container {
    background: var(--bg-primary);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
    margin-top: var(--spacing-md);
}

.table-scroll {
    overflow-x: auto;
    overflow-y: visible;
    -webkit-overflow-scrolling: touch;
    max-height: 600px;
    position: relative;
}

/* Table Styles */
.amortization-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9375rem;
}

.amortization-table thead {
    position: sticky;
    top: 0;
    z-index: 10;
    background: var(--bg-secondary);
}

.amortization-table th {
    text-align: left;
    padding: var(--spacing-md);
    font-weight: 700;
    color: var(--text-primary);
    border-bottom: 2px solid var(--border-color);
    white-space: nowrap;
}

.amortization-table td {
    padding: var(--spacing-md);
    border-bottom: 1px solid var(--border-color);
    color: var(--text-primary);
}

.amortization-table tbody tr:hover {
    background: var(--bg-secondary);
}

.amortization-table tbody tr:last-child td {
    border-bottom: none;
}

/* Year highlight rows */
.amortization-table tbody tr[style*="font-weight: 700"] {
    background: var(--primary-50);
}

[data-theme="dark"] .amortization-table tbody tr[style*="font-weight: 700"] {
    background: rgba(59, 130, 246, 0.1);
}

/* Button group at bottom of table */
.amortization-table-container > div[style*="flex"] {
    display: flex;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    background: var(--bg-secondary);
    border-top: 2px solid var(--border-color);
}

/* ============================================
   MOBILE RESPONSIVE - AMORTIZATION
   ============================================ */

@media (max-width: 1024px) {
    .section-header-small {
        flex-direction: column;
        align-items: stretch;
    }
    
    .btn-toggle {
        width: 100%;
        justify-content: center;
    }
}

@media (max-width: 768px) {
    /* Header */
    .section-title-small {
        font-size: 1.125rem;
    }
    
    /* Make table horizontally scrollable */
    .table-scroll {
        margin: 0;
        border-radius: 0;
    }
    
    /* Compact table */
    .amortization-table {
        font-size: 0.8125rem;
        min-width: 600px; /* Forces horizontal scroll */
    }
    
    .amortization-table th,
    .amortization-table td {
        padding: var(--spacing-sm);
        white-space: nowrap;
    }
    
    .amortization-table th {
        font-size: 0.75rem;
        text-transform: uppercase;
        letter-spacing: 0.5px;
    }
    
    /* Stack buttons vertically */
    .amortization-table-container > div[style*="flex"] {
        flex-direction: column;
        padding: var(--spacing-md);
        gap: var(--spacing-sm);
    }
    
    .amortization-table-container button {
        width: 100% !important;
        min-width: 100% !important;
        max-width: 100% !important;
        flex: 1 !important;
    }
    
    /* Scroll indicator */
    .table-scroll::before {
        content: '👈 Desliza para ver más →';
        display: block;
        text-align: center;
        padding: var(--spacing-sm);
        background: var(--warning-100);
        color: var(--warning-700);
        font-size: 0.75rem;
        font-weight: 600;
        position: sticky;
        left: 0;
        z-index: 5;
    }
    
    [data-theme="dark"] .table-scroll::before {
        background: rgba(251, 191, 36, 0.15);
        color: var(--warning-400);
    }
}

@media (max-width: 480px) {
    /* Extra small screens */
    .amortization-table {
        font-size: 0.75rem;
        min-width: 500px;
    }
    
    .amortization-table th,
    .amortization-table td {
        padding: var(--spacing-xs) 6px;
    }
    
    .amortization-table th {
        font-size: 0.6875rem;
    }
    
    /* Abbreviate headers */
    .amortization-table th:nth-child(1)::after { content: 'Per.'; }
    .amortization-table th:nth-child(2)::after { content: 'Pay'; }
    .amortization-table th:nth-child(3)::after { content: 'Prin.'; }
    .amortization-table th:nth-child(4)::after { content: 'Int.'; }
    .amortization-table th:nth-child(5)::after { content: 'Bal.'; }
    
    .amortization-table th:nth-child(1),
    .amortization-table th:nth-child(2),
    .amortization-table th:nth-child(3),
    .amortization-table th:nth-child(4),
    .amortization-table th:nth-child(5) {
        font-size: 0;
    }
}

/* Custom scrollbar for table */
.table-scroll::-webkit-scrollbar {
    height: 8px;
}

.table-scroll::-webkit-scrollbar-track {
    background: var(--bg-secondary);
    border-radius: 4px;
}

.table-scroll::-webkit-scrollbar-thumb {
    background: var(--primary-400);
    border-radius: 4px;
}

.table-scroll::-webkit-scrollbar-thumb:hover {
    background: var(--primary-500);
}

/* ============================================
   FIX: MOBILE TABLE HEADERS
   ============================================ */

@media (max-width: 768px) {
    /* FORCE show table headers on mobile */
    .amortization-table thead {
        display: table-header-group !important;
        position: sticky !important;
        top: 0 !important;
        z-index: 100 !important;
    }
    
    .amortization-table thead tr {
        display: table-row !important;
    }
    
    .amortization-table thead th {
        display: table-cell !important;
        background: var(--primary-600) !important;
        color: white !important;
        font-weight: 700 !important;
        padding: var(--spacing-sm) 6px !important;
        font-size: 0.75rem !important;
        text-align: center !important;
        border-right: 1px solid rgba(255, 255, 255, 0.1) !important;
        white-space: nowrap !important;
    }
    
    .amortization-table thead th:last-child {
        border-right: none !important;
    }
    
    /* Better cell spacing */
    .amortization-table tbody td {
        text-align: center !important;
        padding: var(--spacing-sm) 4px !important;
        font-size: 0.8125rem !important;
    }
    
    /* First column (Period) - left aligned */
    .amortization-table tbody td:first-child,
    .amortization-table thead th:first-child {
        text-align: left !important;
        padding-left: var(--spacing-sm) !important;
    }
    
    /* Last column (Balance) - right aligned */
    .amortization-table tbody td:last-child,
    .amortization-table thead th:last-child {
        text-align: right !important;
        padding-right: var(--spacing-sm) !important;
    }
    
    /* Remove the scroll indicator that might be blocking */
    .table-scroll::before {
        display: none !important;
    }
    
    /* Better table container */
    .table-scroll {
        max-height: 500px !important;
        overflow-y: auto !important;
        overflow-x: auto !important;
        border-radius: var(--radius-md);
    }
    
    /* Minimum table width for proper spacing */
    .amortization-table {
        min-width: 100% !important;
        width: 100% !important;
        table-layout: fixed !important;
    }
    
    /* Column widths */
    .amortization-table th:nth-child(1),
    .amortization-table td:nth-child(1) { width: 20%; } /* Period */
    
    .amortization-table th:nth-child(2),
    .amortization-table td:nth-child(2) { width: 18%; } /* Payment */
    
    .amortization-table th:nth-child(3),
    .amortization-table td:nth-child(3) { width: 18%; } /* Principal */
    
    .amortization-table th:nth-child(4),
    .amortization-table td:nth-child(4) { width: 18%; } /* Interest */
    
    .amortization-table th:nth-child(5),
    .amortization-table td:nth-child(5) { width: 26%; } /* Balance */
}

@media (max-width: 480px) {
    /* Extra small screens */
    .amortization-table thead th {
        font-size: 0.6875rem !important;
        padding: var(--spacing-xs) 4px !important;
    }
    
    .amortization-table tbody td {
        font-size: 0.75rem !important;
        padding: var(--spacing-xs) 4px !important;
    }
}

/* Support Section */
.support-section {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    padding: 50px 20px;
    text-align: center;
    margin-top: 60px;
}

.support-container {
    max-width: 600px;
    margin: 0 auto;
    background: rgba(255, 255, 255, 0.95);
    padding: 40px 30px;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.support-container h3 {
    color: #2d3748;
    font-size: 26px;
    margin-bottom: 15px;
    font-weight: 600;
}

.support-container p {
    color: #4a5568;
    font-size: 16px;
    margin-bottom: 20px;
    line-height: 1.6;
}

.donate-button {
    display: inline-block;
    background: #0070ba;
    color: white !important;
    padding: 14px 35px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    font-size: 18px;
    transition: all 0.3s ease;
    margin: 15px 0;
    box-shadow: 0 4px 15px rgba(0, 112, 186, 0.3);
}

.donate-button:hover {
    background: #005a92;
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(0, 112, 186, 0.4);
}

.support-text {
    font-size: 14px;
    color: #718096;
    margin-top: 20px;
    font-style: italic;
}

/* Dark mode support */
body.dark-mode .support-container {
    background: rgba(45, 55, 72, 0.95);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

body.dark-mode .support-container h3 {
    color: #e2e8f0;
}

body.dark-mode .support-container p,
body.dark-mode .support-text {
    color: #cbd5e0;
}

/* Responsive */
@media (max-width: 768px) {
    .support-section {
        padding: 35px 15px;
        margin-top: 40px;
    }
    
    .support-container {
        padding: 30px 20px;
    }
    
    .support-container h3 {
        font-size: 22px;
    }
    
    .donate-button {
        font-size: 16px;
        padding: 12px 28px;
    }
}

/* === Donate Button Header === */
.donate-btn-header {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    color: white !important;
    padding: 0.625rem 1.25rem;
    border-radius: 9999px;
    text-decoration: none;
    font-weight: 700;
    font-size: 0.875rem;
    transition: all var(--transition-fast);
    box-shadow: 0 4px 15px rgba(245, 87, 108, 0.3);
    border: 2px solid transparent;
}

.donate-btn-header:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(245, 87, 108, 0.4);
    border-color: rgba(255, 255, 255, 0.3);
}

.donate-btn-header:active {
    transform: translateY(0);
}

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

/* === Support Section (actualizado) === */
.support-section {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    padding: 3.5rem 1.5rem;
    text-align: center;
    margin-top: 4rem;
    position: relative;
    overflow: hidden;
}

.support-section::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='0.05'%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: 0.4;
}

.support-container {
    max-width: 600px;
    margin: 0 auto;
    background: rgba(255, 255, 255, 0.95);
    padding: 2.5rem 2rem;
    border-radius: 1.25rem;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.2);
    position: relative;
    z-index: 1;
}

[data-theme="dark"] .support-container {
    background: rgba(30, 41, 59, 0.95);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.support-container h3 {
    color: #2d3748;
    font-size: 1.75rem;
    margin-bottom: 1rem;
    font-weight: 700;
}

[data-theme="dark"] .support-container h3 {
    color: #f1f5f9;
}

.support-container p {
    color: #4a5568;
    font-size: 1rem;
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

[data-theme="dark"] .support-container p {
    color: #cbd5e1;
}

.donate-button-main {
    display: inline-block;
    background: #0070ba;
    color: white !important;
    padding: 1rem 2.25rem;
    border-radius: 0.75rem;
    text-decoration: none;
    font-weight: 700;
    font-size: 1.125rem;
    transition: all var(--transition-fast);
    margin: 1rem 0;
    box-shadow: 0 6px 20px rgba(0, 112, 186, 0.3);
}

.donate-button-main:hover {
    background: #005a92;
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(0, 112, 186, 0.4);
}

.donate-button-main:active {
    transform: translateY(-1px);
}

.support-text {
    font-size: 0.875rem;
    color: #718096;
    margin-top: 1.25rem;
    font-style: italic;
}

[data-theme="dark"] .support-text {
    color: #94a3b8;
}

/* === Responsive === */
@media (max-width: 768px) {
    .donate-btn-header {
        padding: 0.5rem 1rem;
        font-size: 0.8125rem;
    }
    
    .support-section {
        padding: 2.5rem 1rem;
        margin-top: 3rem;
    }
    
    .support-container {
        padding: 2rem 1.5rem;
    }
    
    .support-container h3 {
        font-size: 1.5rem;
    }
    
    .donate-button-main {
        font-size: 1rem;
        padding: 0.875rem 1.75rem;
    }
}

@media (max-width: 480px) {
    .donate-btn-header {
        padding: 0.5rem 0.75rem;
        font-size: 0;
    }
    
    .donate-btn-header::before {
        content: "❤️";
        font-size: 1.125rem;
    }
    
    .support-container h3 {
        font-size: 1.375rem;
    }
}