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

:root {
    --primary-color: #2563eb;
    --secondary-color: #10b981;
    --dark-color: #1f2937;
    --light-gray: #f3f4f6;
    --border-color: #e5e7eb;
    --text-color: #374151;
    --success-color: #059669;
    --whatsapp-green: #25D366;
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: #ffffff;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

img {
    max-width: 100%;
    height: auto;
}

a {
    text-decoration: none;
    color: inherit;
}

/* ========================================
   HEADER
   ======================================== */
.header {
    background: #ffffff;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

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

.logo h1 {
    font-size: 1.5rem;
    color: var(--primary-color);
    margin-bottom: 0;
}

.tagline {
    font-size: 0.75rem;
    color: var(--text-color);
    margin-top: -5px;
}

.nav-desktop {
    display: none;
}

.nav-desktop a {
    margin: 0 var(--spacing-md);
    color: var(--text-color);
    font-weight: 500;
    transition: color 0.3s;
}

.nav-desktop a:hover {
    color: var(--primary-color);
}

.header-cta {
    display: none;
}

.mobile-menu-toggle {
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--dark-color);
    cursor: pointer;
}

.nav-mobile {
    display: none;
    background: #ffffff;
    border-top: 1px solid var(--border-color);
}

.nav-mobile.active {
    display: flex;
    flex-direction: column;
    padding: var(--spacing-sm) 0;
}

.nav-mobile a {
    padding: var(--spacing-sm) var(--spacing-md);
    color: var(--text-color);
    border-bottom: 1px solid var(--border-color);
}

/* ========================================
   BUTTONS
   ======================================== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.875rem 1.5rem;
    border-radius: 8px;
    font-weight: 600;
    font-size: 1rem;
    transition: all 0.3s;
    border: none;
    cursor: pointer;
    text-align: center;
    justify-content: center;
}

.btn-primary {
    background: var(--whatsapp-green);
    color: #ffffff;
}

.btn-primary:hover {
    background: #128c7e;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(37, 211, 102, 0.3);
}

.btn-secondary {
    background: var(--primary-color);
    color: #ffffff;
}

.btn-secondary:hover {
    background: #1d4ed8;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

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

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

.btn-call {
    background: var(--primary-color);
    color: #ffffff;
    padding: 0.75rem 1.25rem;
    border-radius: 8px;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.btn-block {
    width: 100%;
}

.btn-small {
    padding: 0.625rem 1.25rem;
    font-size: 0.875rem;
}

/* ========================================
   HERO SECTION
   ======================================== */
.hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #ffffff;
    padding: var(--spacing-xl) 0;
    text-align: center;
}

.hero-title {
    font-size: 2rem;
    margin-bottom: var(--spacing-sm);
    font-weight: 700;
}

.hero-subtitle {
    font-size: 1.125rem;
    margin-bottom: var(--spacing-sm);
    opacity: 0.95;
}

.hero-description {
    font-size: 1rem;
    margin-bottom: var(--spacing-lg);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    opacity: 0.9;
}

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

/* ========================================
   TRUST BADGES
   ======================================== */
.trust-badges {
    padding: var(--spacing-xl) 0;
    background: var(--light-gray);
}

.badges-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
    text-align: center;
}

.badge i {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
}

.badge h3 {
    font-size: 1.125rem;
    margin-bottom: 0.25rem;
    color: var(--dark-color);
}

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

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

.section-title {
    font-size: 1.875rem;
    text-align: center;
    margin-bottom: var(--spacing-sm);
    color: var(--dark-color);
}

.section-subtitle {
    text-align: center;
    color: var(--text-color);
    margin-bottom: var(--spacing-lg);
    font-size: 1.125rem;
}

/* ========================================
   HOW IT WORKS
   ======================================== */
.how-it-works {
    background: #ffffff;
}

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

.step {
    text-align: center;
    padding: var(--spacing-lg);
    background: var(--light-gray);
    border-radius: 12px;
}

.step-number {
    width: 50px;
    height: 50px;
    background: var(--primary-color);
    color: #ffffff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    margin: 0 auto var(--spacing-md);
}

.step h3 {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-sm);
    color: var(--dark-color);
}

.step p {
    color: var(--text-color);
}

/* ========================================
   CATEGORIES
   ======================================== */
.categories {
    background: var(--light-gray);
}

.category-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
}

.category-card {
    background: #ffffff;
    padding: var(--spacing-lg);
    border-radius: 12px;
    text-align: center;
    transition: all 0.3s;
    border: 2px solid transparent;
}

.category-card:hover {
    border-color: var(--primary-color);
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(0,0,0,0.1);
}

.category-card i {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
}

.category-card h3 {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-sm);
    color: var(--dark-color);
}

.category-card p {
    color: var(--text-color);
    margin-bottom: var(--spacing-sm);
    font-size: 0.875rem;
}

.price-range {
    display: inline-block;
    background: var(--light-gray);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--success-color);
}

.category-cta {
    text-align: center;
    margin-top: var(--spacing-xl);
}

.category-cta p {
    margin-bottom: var(--spacing-md);
    font-size: 1.125rem;
}

/* ========================================
   BRANDS
   ======================================== */
.brands {
    background: #ffffff;
}

.brands-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
}

.brand-card {
    background: var(--light-gray);
    padding: var(--spacing-lg);
    border-radius: 12px;
    text-align: center;
    transition: all 0.3s;
    border: 2px solid transparent;
}

.brand-card:hover {
    border-color: var(--primary-color);
    background: #ffffff;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

.brand-logo {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--dark-color);
    margin-bottom: var(--spacing-sm);
}

.brand-card p {
    font-size: 0.875rem;
    color: var(--text-color);
}

/* ========================================
   WHY CHOOSE US
   ======================================== */
.why-choose {
    background: var(--light-gray);
}

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

.benefit {
    background: #ffffff;
    padding: var(--spacing-lg);
    border-radius: 12px;
    text-align: center;
}

.benefit i {
    font-size: 2.5rem;
    color: var(--secondary-color);
    margin-bottom: var(--spacing-sm);
}

.benefit h3 {
    font-size: 1.125rem;
    margin-bottom: var(--spacing-sm);
    color: var(--dark-color);
}

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

.transparency-note {
    background: #fef3c7;
    border-left: 4px solid #f59e0b;
    padding: var(--spacing-md);
    border-radius: 8px;
    display: flex;
    gap: var(--spacing-sm);
}

.transparency-note i {
    color: #f59e0b;
    font-size: 1.25rem;
    flex-shrink: 0;
}

/* ========================================
   TESTIMONIALS
   ======================================== */
.testimonials {
    background: #ffffff;
}

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

.testimonial {
    background: var(--light-gray);
    padding: var(--spacing-lg);
    border-radius: 12px;
}

.stars {
    color: #fbbf24;
    font-size: 1.25rem;
    margin-bottom: var(--spacing-sm);
}

.testimonial p {
    font-style: italic;
    margin-bottom: var(--spacing-md);
    color: var(--text-color);
}

.author {
    font-weight: 600;
    color: var(--dark-color);
}

/* ========================================
   CONTACT SECTION
   ======================================== */
.contact-section {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #ffffff;
}

.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
}

.contact-info h2 {
    font-size: 1.875rem;
    margin-bottom: var(--spacing-md);
}

.contact-info > p {
    margin-bottom: var(--spacing-lg);
    font-size: 1.125rem;
    opacity: 0.9;
}

.contact-methods {
    margin-bottom: var(--spacing-lg);
}

.contact-method {
    display: flex;
    gap: var(--spacing-md);
    align-items: center;
    margin-bottom: var(--spacing-md);
    background: rgba(255,255,255,0.1);
    padding: var(--spacing-md);
    border-radius: 8px;
}

.contact-method i {
    font-size: 1.5rem;
}

.contact-method h4 {
    font-size: 0.875rem;
    margin-bottom: 0.25rem;
    opacity: 0.9;
}

.contact-method a {
    color: #ffffff;
    font-weight: 600;
}

.response-time {
    background: rgba(255,255,255,0.1);
    padding: var(--spacing-sm);
    border-radius: 8px;
    font-size: 0.875rem;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

/* ========================================
   CONTACT FORM
   ======================================== */
.contact-form {
    background: #ffffff;
    padding: var(--spacing-lg);
    border-radius: 12px;
    box-shadow: 0 8px 30px rgba(0,0,0,0.1);
}

.form-group {
    margin-bottom: var(--spacing-md);
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--dark-color);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.875rem;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
    font-family: inherit;
    transition: border-color 0.3s;
}

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

.form-group textarea {
    resize: vertical;
}

/* ========================================
   FOOTER
   ======================================== */
.footer {
    background: var(--dark-color);
    color: #ffffff;
    padding: var(--spacing-xl) 0 var(--spacing-md);
}

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

.footer-col h3,
.footer-col h4 {
    margin-bottom: var(--spacing-md);
}

.footer-col p {
    opacity: 0.8;
    line-height: 1.6;
}

.footer-col ul {
    list-style: none;
}

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

.footer-col a {
    color: #ffffff;
    opacity: 0.8;
    transition: opacity 0.3s;
}

.footer-col a:hover {
    opacity: 1;
}

.footer-col i {
    margin-right: var(--spacing-sm);
    color: var(--primary-color);
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: var(--spacing-md);
    text-align: center;
    opacity: 0.8;
}

.footer-bottom a {
    color: #ffffff;
    text-decoration: underline;
}

/* ========================================
   STICKY BUTTONS
   ======================================== */
.sticky-buttons {
    position: fixed;
    bottom: 20px;
    right: 20px;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    z-index: 999;
}

.sticky-whatsapp,
.sticky-call {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #ffffff;
    font-size: 1.75rem;
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
    transition: all 0.3s;
}

.sticky-whatsapp {
    background: var(--whatsapp-green);
}

.sticky-whatsapp:hover {
    background: #128c7e;
    transform: scale(1.1);
}

.sticky-call {
    background: var(--primary-color);
}

.sticky-call:hover {
    background: #1d4ed8;
    transform: scale(1.1);
}

/* ========================================
   CALLBACK POPUP
   ======================================== */
.callback-popup {
    position: fixed;
    bottom: 100px;
    right: 20px;
    background: #ffffff;
    padding: var(--spacing-lg);
    border-radius: 12px;
    box-shadow: 0 8px 30px rgba(0,0,0,0.2);
    max-width: 280px;
    z-index: 998;
    display: none;
}

.callback-popup.show {
    display: block;
    animation: slideInRight 0.5s;
}

@keyframes slideInRight {
    from {
        transform: translateX(400px);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

.close-popup {
    position: absolute;
    top: 10px;
    right: 10px;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--text-color);
    cursor: pointer;
}

.callback-popup h3 {
    margin-bottom: var(--spacing-sm);
    color: var(--dark-color);
}

.callback-popup p {
    margin-bottom: var(--spacing-md);
    color: var(--text-color);
}

/* ========================================
   RESPONSIVE - TABLET
   ======================================== */
@media (min-width: 768px) {
    .hero-title {
        font-size: 2.5rem;
    }

    .badges-grid {
        grid-template-columns: repeat(4, 1fr);
    }

    .steps-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .category-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .brands-grid {
        grid-template-columns: repeat(4, 1fr);
    }

    .benefits-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .testimonials-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .contact-wrapper {
        grid-template-columns: 1fr 1.2fr;
    }

    .footer-content {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* ========================================
   RESPONSIVE - DESKTOP
   ======================================== */
@media (min-width: 1024px) {
    .nav-desktop {
        display: flex;
    }

    .header-cta {
        display: block;
    }

    .mobile-menu-toggle {
        display: none;
    }

    .nav-mobile {
        display: none !important;
    }

    .hero-title {
        font-size: 3rem;
    }

    .steps-grid {
        grid-template-columns: repeat(4, 1fr);
    }

    .category-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .benefits-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .footer-content {
        grid-template-columns: repeat(4, 1fr);
    }
}

/* ========================================
   UTILITY CLASSES
   ======================================== */
.text-center {
    text-align: center;
}

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