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

:root {
    /* Colors */
    --primary-500: #2563EB;
    --primary-600: #1D4ED8;
    --primary-700: #1E40AF;
    --secondary-500: #10B981;
    --secondary-600: #059669;
    --danger-500: #EF4444;
    --danger-600: #DC2626;
    --warning-500: #F59E0B;
    
    /* Neutrals */
    --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;
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #667EEA 0%, #764BA2 100%);
    --gradient-hero: linear-gradient(135deg, #1E3A8A 0%, #3B82F6 50%, #06B6D4 100%);
    --gradient-glass: linear-gradient(135deg, rgba(255,255,255,0.1) 0%, rgba(255,255,255,0.05) 100%);
    
    /* Shadows */
    --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);
    
    /* Typography */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    
    /* Spacing */
    --container-width: 1200px;
    --section-padding: 5rem;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    font-size: 16px;
    line-height: 1.6;
    color: var(--gray-800);
    background-color: #FFFFFF;
    overflow-x: hidden;
}

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 2rem;
}

/* ====================================
   Hero Section
   ==================================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    background: var(--gradient-hero);
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 0;
}

.hero-background::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, rgba(96, 165, 250, 0.3) 0%, transparent 70%);
    border-radius: 50%;
    animation: float 20s ease-in-out infinite;
}

.hero-background::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -10%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(34, 211, 238, 0.2) 0%, transparent 70%);
    border-radius: 50%;
    animation: float 15s ease-in-out infinite reverse;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) scale(1); }
    50% { transform: translate(30px, 30px) scale(1.1); }
}

.gradient-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(180deg, rgba(30, 58, 138, 0.3) 0%, rgba(30, 58, 138, 0.7) 100%);
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    color: white;
    padding: 2rem 0;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    padding: 0.5rem 1.5rem;
    border-radius: 50px;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 2rem;
    border: 1px solid rgba(255, 255, 255, 0.3);
    animation: slideDown 0.8s ease-out;
}

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

.hero-title {
    font-size: clamp(2.5rem, 6vw, 4rem);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    text-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    animation: fadeInUp 0.8s ease-out 0.2s both;
}

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

.hero-subtitle {
    font-size: clamp(1.1rem, 2vw, 1.4rem);
    margin-bottom: 3rem;
    opacity: 0.95;
    font-weight: 500;
    animation: fadeInUp 0.8s ease-out 0.4s both;
}

.hero-cta {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 3rem;
    animation: fadeInUp 0.8s ease-out 0.6s both;
}

.hero-trust {
    display: flex;
    gap: 2rem;
    justify-content: center;
    flex-wrap: wrap;
    animation: fadeInUp 0.8s ease-out 0.8s both;
}

.trust-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.95rem;
    font-weight: 500;
}

.scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    color: white;
    opacity: 0.7;
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 100% { transform: translateX(-50%) translateY(0); }
    50% { transform: translateX(-50%) translateY(10px); }
}

/* ====================================
   Buttons
   ==================================== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem 2rem;
    font-size: 1.1rem;
    font-weight: 600;
    border-radius: 12px;
    border: none;
    cursor: pointer;
    text-decoration: none;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn:hover::before {
    width: 300px;
    height: 300px;
}

.btn svg {
    position: relative;
    z-index: 1;
}

.btn span,
.btn:not(:has(span)) {
    position: relative;
    z-index: 1;
}

.btn-primary {
    background: var(--primary-500);
    color: white;
    box-shadow: var(--shadow-lg);
}

.btn-primary:hover {
    background: var(--primary-600);
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl);
}

.btn-secondary {
    background: white;
    color: var(--primary-600);
    box-shadow: var(--shadow-lg);
}

.btn-secondary:hover {
    background: var(--gray-50);
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl);
}

.btn-whatsapp {
    background: #25D366;
    color: white;
    box-shadow: var(--shadow-lg);
}

.btn-whatsapp:hover {
    background: #20BA5A;
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl);
}

.btn-large {
    padding: 1.25rem 2.5rem;
    font-size: 1.2rem;
}

/* ====================================
   Section Headers
   ==================================== */
.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-title {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 800;
    color: var(--gray-900);
    margin-bottom: 1rem;
}

.section-subtitle {
    font-size: 1.2rem;
    color: var(--gray-600);
    max-width: 600px;
    margin: 0 auto;
}

/* ====================================
   Comparison Section
   ==================================== */
.comparison {
    padding: var(--section-padding) 0;
    background: var(--gray-50);
}

.comparison-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    max-width: 900px;
    margin: 0 auto;
}

.comparison-card {
    background: white;
    border-radius: 20px;
    padding: 2.5rem;
    box-shadow: var(--shadow-lg);
    transition: all 0.3s ease;
    position: relative;
}

.comparison-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-2xl);
}

.comparison-good {
    border: 2px solid var(--secondary-500);
}

.badge-recommended {
    position: absolute;
    top: -15px;
    right: 20px;
    background: var(--secondary-500);
    color: white;
    padding: 0.5rem 1.5rem;
    border-radius: 50px;
    font-size: 0.875rem;
    font-weight: 700;
    box-shadow: var(--shadow-md);
}

.comparison-icon {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    color: white;
}

.comparison-icon.red {
    background: linear-gradient(135deg, #EF4444 0%, #DC2626 100%);
}

.comparison-icon.green {
    background: linear-gradient(135deg, #10B981 0%, #059669 100%);
}

.comparison-card h3 {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    text-align: center;
}

.comparison-card ul {
    list-style: none;
}

.comparison-card li {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.75rem 0;
    font-size: 1.05rem;
}

/* ====================================
   Before/After Gallery
   ==================================== */
.before-after {
    padding: var(--section-padding) 0;
}

.gallery {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.gallery-item {
    position: relative;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    transition: all 0.3s ease;
    aspect-ratio: 4/3;
}

.gallery-item:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-2xl);
}

.gallery-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.gallery-label {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(to top, rgba(0,0,0,0.8) 0%, transparent 100%);
    color: white;
    padding: 2rem 1.5rem 1.5rem;
    font-weight: 600;
    font-size: 1.1rem;
}

/* ====================================
   How It Works
   ==================================== */
.how-it-works {
    padding: var(--section-padding) 0;
    background: var(--gray-50);
}

.steps {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
    max-width: 1100px;
    margin: 0 auto;
}

.step {
    flex: 1;
    min-width: 250px;
    background: white;
    padding: 2.5rem 2rem;
    border-radius: 20px;
    text-align: center;
    box-shadow: var(--shadow-lg);
    transition: all 0.3s ease;
    position: relative;
}

.step:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-2xl);
}

.step-number {
    position: absolute;
    top: -20px;
    left: 50%;
    transform: translateX(-50%);
    width: 50px;
    height: 50px;
    background: var(--gradient-primary);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 800;
    box-shadow: var(--shadow-md);
}

.step-icon {
    color: var(--primary-500);
    margin: 1.5rem 0;
}

.step h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--gray-900);
}

.step p {
    color: var(--gray-600);
    font-size: 1.05rem;
}

.step-arrow {
    color: var(--primary-500);
    flex-shrink: 0;
}

@media (max-width: 768px) {
    .step-arrow {
        display: none;
    }
}

/* ====================================
   Trust Section
   ==================================== */
.trust {
    padding: var(--section-padding) 0;
    background: linear-gradient(135deg, #1E3A8A 0%, #3B82F6 100%);
    color: white;
}

.trust-content {
    display: flex;
    align-items: center;
    gap: 4rem;
    flex-wrap: wrap;
    justify-content: center;
}

.trust-badge {
    flex-shrink: 0;
}

.trust-text {
    flex: 1;
    max-width: 600px;
}

.trust-text h2 {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 1rem;
}

.trust-description {
    font-size: 1.2rem;
    line-height: 1.8;
    margin-bottom: 2rem;
    opacity: 0.95;
}

.trust-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1rem;
}

.trust-feature {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.05rem;
    font-weight: 500;
}

/* ====================================
   Bottom CTA
   ==================================== */
.bottom-cta {
    padding: var(--section-padding) 0;
    background: var(--gray-900);
    color: white;
}

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

.cta-content h2 {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 800;
    margin-bottom: 1rem;
}

.cta-content p {
    font-size: 1.3rem;
    margin-bottom: 2.5rem;
    opacity: 0.9;
}

.cta-buttons {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* ====================================
   Footer
   ==================================== */
.footer {
    background: var(--gray-900);
    color: var(--gray-400);
    padding: 2rem 0;
    text-align: center;
    border-top: 1px solid var(--gray-800);
}

.footer p {
    margin: 0.5rem 0;
}

.footer-location {
    font-weight: 600;
    color: var(--gray-300);
}

/* ====================================
   Responsive Design
   ==================================== */
@media (max-width: 768px) {
    :root {
        --section-padding: 3rem;
    }
    
    .hero-cta {
        flex-direction: column;
        width: 100%;
        max-width: 400px;
        margin-left: auto;
        margin-right: auto;
    }
    
    .btn {
        width: 100%;
        justify-content: center;
    }
    
    .comparison-grid {
        grid-template-columns: 1fr;
    }
    
    .gallery {
        grid-template-columns: 1fr;
    }
    
    .trust-content {
        gap: 2rem;
    }
    
    .trust-badge svg {
        width: 60px;
        height: 60px;
    }
}

/* ====================================
   Accessibility & Animations
   ==================================== */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Focus states for accessibility */
a:focus,
button:focus {
    outline: 2px solid var(--primary-500);
    outline-offset: 2px;
}