/**
 * ETB Design System - Enterprise Refactor v2.0
 * Comprehensive Design Tokens and Component System
 * 
 * Based on:
 * - Frame 3.png (Color Palette)
 * - Frame 4.png (Elements: Icons, Spacing, Radius, Buttons, States, Controls)
 * - Frame 60.png (Text Fields & Interaction)
 * - Card.png (Card Component)
 * - Frame 12.png (Hero Section Specifications)
 * - 1_Desktop.png (Full Design Reference)
 * 
 * @version 2.0.0
 * @date 2026-02-12
 */

/* =====================================================
   DESIGN TOKENS - CSS CUSTOM PROPERTIES
   ===================================================== */
:root {
    /* =================================================
       COLORS - PRIMARY (Frame 3.png)
       ================================================= */
    --color-primary: #0092BC;
    --color-secondary: #214780;
    --color-accent: #00FFFF;
    --color-dark: #044A8B;
    --color-sky: #004191;
    
    /* =================================================
       COLORS - OFFERS (Frame 3.png)
       ================================================= */
    --color-neon: #00FFFF;
    --color-hogares: #0018FF;
    --color-moviles: #009CAB;
    
    /* =================================================
       COLORS - NEUTRALS (Frame 3.png)
       ================================================= */
    --color-gray-50: #F9FAFB;
    --color-gray-100: #F3F4F6;
    --color-gray-200: #E5E7EB;
    --color-gray-300: #D1D5DB;
    --color-gray-400: #9CA3AF;
    --color-gray-500: #6B7280;
    --color-gray-600: #4B5563;
    --color-gray-700: #374151;
    --color-gray-800: #1F2937;
    --color-gray-900: #111827;
    
    /* ETB Neutral Scale (Frame 3.png) */
    --etb-neutral-100: #515151;
    --etb-neutral-75: #7A7A7A;
    --etb-neutral-50: #A8A8A8;
    --etb-neutral-25: #D5D5D5;
    
    /* =================================================
       COLORS - SEMANTIC
       ================================================= */
    --color-success: #10B981;
    --color-warning: #F59E0B;
    --color-error: #EF4444;
    --color-info: #3B82F6;
    
    /* =================================================
       COLORS - SYSTEM
       ================================================= */
    --color-white: #FFFFFF;
    --color-black: #000000;
    --color-bg-app: #FAFAFA;
    --color-bg-neutral: #F8F8F9;
    --color-bg-gray: #F5F5F5;
    
    /* =================================================
       SPACING SCALE (4px Base)
       ================================================= */
    --spacing-1: 4px;
    --spacing-2: 8px;
    --spacing-3: 12px;
    --spacing-4: 16px;
    --spacing-5: 20px;
    --spacing-6: 24px;
    --spacing-8: 32px;
    --spacing-10: 40px;
    --spacing-12: 48px;
    --spacing-16: 64px;
    --spacing-20: 80px;
    --spacing-24: 96px;
    
    /* ETB Specific Spacing (Frame 4.png) */
    --space-5: 5px;
    --space-10: 10px;
    --space-15: 15px;
    --space-20: 20px;
    --space-25: 25px;
    --space-35: 35px;
    --space-45: 45px;
    --space-55: 55px;
    --space-65: 65px;
    --space-75: 75px;
    --space-85: 85px;
    
    /* =================================================
       BORDER RADIUS SCALE
       ================================================= */
    --radius-xs: 4px;
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-2xl: 30px;
    --radius-full: 9999px;
    
    /* Hero Radius (Frame 12.png - Exact Figma Value) */
    --radius-hero: 29.67px;
    
    /* ETB Button Radius (Frame 4.png) */
    --radius-btn-soft: 10px;
    --radius-btn-rounded: 15px;
    --radius-btn-rounded-plus: 25px;
    
    /* =================================================
       ELEVATION SYSTEM (Shadows)
       ================================================= */
    --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.2);
    --shadow-xl: 0 12px 24px rgba(0, 0, 0, 0.25);
    --shadow-2xl: 0 16px 32px rgba(0, 0, 0, 0.3);
    
    /* Card Shadows */
    --shadow-card: 0 4px 16px rgba(0, 0, 0, 0.08);
    --shadow-card-hover: 0 8px 24px rgba(0, 0, 0, 0.12);
    --shadow-card-active: 0 2px 8px rgba(0, 0, 0, 0.06);
    
    /* Button Shadows */
    --shadow-button: 0 4px 15px rgba(33, 71, 128, 0.25);
    --shadow-button-hover: 0 6px 20px rgba(33, 71, 128, 0.35);
    
    /* Hero Shadow (Frame 12.png) */
    --shadow-hero-btn: 0px 59.34px 118.68px -22.25px rgba(0, 0, 0, 0.14);
    
    /* =================================================
       TYPOGRAPHY SCALE
       ================================================= */
    --font-family: 'Lexend', 'Lexend Deca', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-family-secondary: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    
    /* Font Sizes */
    --font-size-xs: 12px;
    --font-size-sm: 14px;
    --font-size-base: 16px;
    --font-size-lg: 18px;
    --font-size-xl: 20px;
    --font-size-2xl: 24px;
    --font-size-3xl: 30px;
    --font-size-4xl: 36px;
    --font-size-5xl: 48px;
    --font-size-6xl: 60px;
    
    /* Font Weights */
    --font-weight-light: 300;
    --font-weight-regular: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    --font-weight-extrabold: 800;
    
    /* Line Heights */
    --line-height-tight: 1.25;
    --line-height-snug: 1.375;
    --line-height-normal: 1.5;
    --line-height-relaxed: 1.625;
    --line-height-loose: 2;
    
    /* Letter Spacings */
    --letter-spacing-tighter: -0.05em;
    --letter-spacing-tight: -0.025em;
    --letter-spacing-normal: 0;
    --letter-spacing-wide: 0.025em;
    --letter-spacing-wider: 0.05em;
    --letter-spacing-widest: 0.1em;
    
    /* =================================================
       HERO SECTION TOKENS (Frame 12.png - Figma Exact)
       ================================================= */
    --hero-gradient-start: #00FFFF;
    --hero-gradient-end: #044A8B;
    --hero-radius: 29.67px;
    --hero-padding-top: 45px;
    --hero-padding-right: 137px;
    --hero-padding-bottom: 40px;
    --hero-padding-left: 137px;
    --hero-viewport-spacing: 10px;
    --hero-internal-gap: 20px;
    
    /* =================================================
       TRANSITIONS
       ================================================= */
    --transition-fast: 150ms ease;
    --transition-base: 200ms ease;
    --transition-slow: 300ms ease;
    --transition-carousel: 500ms cubic-bezier(0.4, 0, 0.2, 1);
    
    /* =================================================
       BUTTON TOKENS (Frame 4.png, 3button.png)
       ================================================= */
    --btn-height-sm: 40px;
    --btn-height-lg: 45px;
    --btn-padding-x: 24px;
    --btn-padding-x-sm: 16px;
    
    /* =================================================
       ICON SIZES (Frame 4.png)
       ================================================= */
    --icon-xs: 10px;
    --icon-sm: 24px;
    --icon-md: 32px;
    --icon-lg: 40px;
    
    /* =================================================
       LEGACY ALIASES (Backward Compatibility)
       ================================================= */
    --etb-cyan: #0092BC;
    --etb-blue-deep: #214780;
    --etb-blue-sky: #004191;
    --etb-blue-dark: #044A8B;
    --etb-neon: #00FFFF;
    --etb-hogares: #0018FF;
    --etb-moviles: #009CAB;
    --etb-white: #FFFFFF;
    --etb-black: #000000;
    --etb-success: #28A745;
    --etb-warning: #F9B233;
    --etb-error: #FF5A5A;
    --etb-gray-bg: #F8F8F9;
}

/* =====================================================
   BASE RESET - MINIMAL, NO GLOBAL OVERRIDES
   ===================================================== */
*,
*::before,
*::after {
    box-sizing: border-box;
}

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

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-regular);
    color: var(--etb-neutral-100);
    background-color: var(--color-white);
    line-height: var(--line-height-normal);
    overflow-x: hidden;
    margin: 0;
    padding: 0;
}

/* =====================================================
   BUTTON COMPONENT SYSTEM
   ===================================================== */

/* Base Button */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-2);
    padding: var(--spacing-3) var(--spacing-6);
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-medium);
    line-height: var(--line-height-normal);
    border-radius: var(--radius-lg);
    border: 2px solid transparent;
    cursor: pointer;
    transition: all var(--transition-base);
    text-decoration: none;
    white-space: nowrap;
}

.btn:focus {
    outline: none;
}

.btn:active {
    transform: scale(0.98);
}

.btn:disabled,
.btn.disabled {
    opacity: 0.5;
    cursor: not-allowed;
    pointer-events: none;
}

/* Button Variants */
.btn-primary {
    background-color: var(--color-primary);
    border-color: var(--color-primary);
    color: var(--color-white);
}

.btn-primary:hover {
    background-color: #007A9C;
    border-color: #007A9C;
}

.btn-primary:active {
    background-color: #006685;
    border-color: #006685;
}

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

.btn-secondary:hover {
    background-color: #1a3a66;
    border-color: #1a3a66;
}

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

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

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

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

/* Button Sizes */
.btn-sm {
    height: var(--btn-height-sm);
    padding: 0 var(--btn-padding-x-sm);
    font-size: var(--font-size-sm);
}

.btn-lg {
    height: var(--btn-height-lg);
    padding: 0 var(--spacing-8);
    font-size: var(--font-size-lg);
}

/* Button Shapes */
.btn-pill {
    border-radius: var(--radius-full);
}

.btn-rounded {
    border-radius: var(--radius-btn-rounded-plus);
}

.btn-soft {
    border-radius: var(--radius-btn-soft);
}

/* Icon Button */
.btn-icon {
    width: var(--btn-height-lg);
    height: var(--btn-height-lg);
    padding: 0;
    border-radius: 50%;
}

/* =====================================================
   CARD COMPONENT SYSTEM
   ===================================================== */

/* Base Card */
.card {
    background-color: var(--color-white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-card);
    padding: var(--spacing-6);
    transition: all var(--transition-slow);
}

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

/* Card Variants */
.card-plan {
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-card);
    padding: var(--spacing-6);
    position: relative;
    overflow: visible;
}

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

.card-plan.popular {
    border: 2px solid var(--color-primary);
}

/* Plan Badge */
.plan-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-1);
    background-color: var(--color-hogares);
    color: var(--color-white);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    padding: 6px 16px;
    border-radius: var(--radius-sm);
    margin-bottom: var(--spacing-4);
}

.plan-badge::before {
    content: "✓ ";
}

/* Plan Pricing */
.plan-price-old {
    color: var(--etb-neutral-75);
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-regular);
    text-decoration: line-through;
    margin-bottom: var(--spacing-1);
}

.plan-price-main {
    color: var(--color-secondary);
    font-size: var(--font-size-4xl);
    font-weight: var(--font-weight-bold);
    line-height: var(--line-height-tight);
    margin-bottom: var(--spacing-1);
}

.plan-price-main .currency {
    font-size: var(--font-size-2xl);
}

.plan-price-main .period {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-regular);
    color: var(--etb-neutral-75);
}

.plan-description {
    color: var(--color-secondary);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-medium);
    margin-bottom: var(--spacing-5);
}

.plan-fine-print {
    color: var(--etb-neutral-75);
    font-size: var(--font-size-sm);
    margin-top: var(--spacing-4);
}

/* =====================================================
   FORM CONTROLS
   ===================================================== */

/* Input Base */
.input,
.form-input {
    width: 100%;
    padding: 14px var(--spacing-5);
    border: 2px solid var(--etb-neutral-25);
    border-radius: var(--radius-xl);
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    color: var(--etb-neutral-100);
    background-color: var(--color-white);
    transition: all var(--transition-base);
}

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

.input::placeholder,
.form-input::placeholder {
    color: var(--etb-neutral-50);
}

.input:disabled,
.form-input:disabled {
    background-color: var(--color-bg-neutral);
    color: var(--etb-neutral-50);
    cursor: not-allowed;
}

.input.error,
.form-input.error {
    border-color: var(--color-error);
}

/* =====================================================
   FAQ / ACCORDION COMPONENT
   ===================================================== */
.faq-item {
    border: 2px solid var(--color-secondary);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-4);
    overflow: hidden;
    background: var(--color-white);
}

.faq-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-5);
    cursor: pointer;
    font-weight: var(--font-weight-medium);
    color: var(--etb-neutral-100);
    transition: background var(--transition-fast);
}

.faq-header:hover {
    background-color: var(--color-bg-neutral);
}

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

.faq-item.active .faq-icon {
    transform: rotate(180deg);
}

.faq-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-slow);
}

.faq-item.active .faq-content {
    max-height: 500px;
}

.faq-body {
    padding: 0 var(--spacing-5) var(--spacing-5);
    color: var(--etb-neutral-75);
    line-height: var(--line-height-relaxed);
}

/* =====================================================
   CAROUSEL DOTS
   ===================================================== */
.slider-dots {
    display: flex;
    justify-content: center;
    gap: var(--spacing-2);
    margin-top: var(--spacing-6);
}

.slider-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background-color: var(--etb-neutral-25);
    border: none;
    cursor: pointer;
    transition: all var(--transition-base);
    padding: 0;
}

.slider-dot:hover {
    background-color: var(--etb-neutral-50);
}

.slider-dot.active {
    background-color: var(--color-primary);
}

/* =====================================================
   UTILITY CLASSES
   ===================================================== */

/* Text Colors */
.text-primary { color: var(--color-primary) !important; }
.text-secondary { color: var(--color-secondary) !important; }
.text-accent { color: var(--color-accent) !important; }
.text-success { color: var(--color-success) !important; }
.text-warning { color: var(--color-warning) !important; }
.text-error { color: var(--color-error) !important; }
.text-white { color: var(--color-white) !important; }
.text-gray-100 { color: var(--etb-neutral-100) !important; }
.text-gray-75 { color: var(--etb-neutral-75) !important; }
.text-gray-50 { color: var(--etb-neutral-50) !important; }

/* Background Colors */
.bg-primary { background-color: var(--color-primary) !important; }
.bg-secondary { background-color: var(--color-secondary) !important; }
.bg-app { background-color: var(--color-bg-app) !important; }
.bg-neutral { background-color: var(--color-bg-neutral) !important; }
.bg-white { background-color: var(--color-white) !important; }

/* Border Radius */
.rounded-xs { border-radius: var(--radius-xs) !important; }
.rounded-sm { border-radius: var(--radius-sm) !important; }
.rounded-md { border-radius: var(--radius-md) !important; }
.rounded-lg { border-radius: var(--radius-lg) !important; }
.rounded-xl { border-radius: var(--radius-xl) !important; }
.rounded-2xl { border-radius: var(--radius-2xl) !important; }
.rounded-full { border-radius: var(--radius-full) !important; }

/* Spacing Utilities */
.p-1 { padding: var(--spacing-1) !important; }
.p-2 { padding: var(--spacing-2) !important; }
.p-3 { padding: var(--spacing-3) !important; }
.p-4 { padding: var(--spacing-4) !important; }
.p-5 { padding: var(--spacing-5) !important; }
.p-6 { padding: var(--spacing-6) !important; }

.m-1 { margin: var(--spacing-1) !important; }
.m-2 { margin: var(--spacing-2) !important; }
.m-3 { margin: var(--spacing-3) !important; }
.m-4 { margin: var(--spacing-4) !important; }
.m-5 { margin: var(--spacing-5) !important; }
.m-6 { margin: var(--spacing-6) !important; }

.mb-1 { margin-bottom: var(--spacing-1) !important; }
.mb-2 { margin-bottom: var(--spacing-2) !important; }
.mb-3 { margin-bottom: var(--spacing-3) !important; }
.mb-4 { margin-bottom: var(--spacing-4) !important; }
.mb-5 { margin-bottom: var(--spacing-5) !important; }
.mb-6 { margin-bottom: var(--spacing-6) !important; }

.mt-1 { margin-top: var(--spacing-1) !important; }
.mt-2 { margin-top: var(--spacing-2) !important; }
.mt-3 { margin-top: var(--spacing-3) !important; }
.mt-4 { margin-top: var(--spacing-4) !important; }
.mt-5 { margin-top: var(--spacing-5) !important; }
.mt-6 { margin-top: var(--spacing-6) !important; }

/* Font Weights */
.font-light { font-weight: var(--font-weight-light) !important; }
.font-regular { font-weight: var(--font-weight-regular) !important; }
.font-medium { font-weight: var(--font-weight-medium) !important; }
.font-semibold { font-weight: var(--font-weight-semibold) !important; }
.font-bold { font-weight: var(--font-weight-bold) !important; }
.font-extrabold { font-weight: var(--font-weight-extrabold) !important; }

/* Screen Reader Only */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

/* =====================================================
   RESPONSIVE ADJUSTMENTS
   ===================================================== */
@media (max-width: 768px) {
    :root {
        --font-size-6xl: 36px;
        --font-size-5xl: 32px;
        --font-size-4xl: 28px;
        --font-size-3xl: 24px;
        --btn-height-sm: 38px;
        --btn-height-lg: 42px;
    }
}

@media (max-width: 480px) {
    :root {
        --font-size-5xl: 28px;
        --font-size-4xl: 24px;
        --font-size-3xl: 20px;
    }
}