/* ============================================
   BUSLOG LANDING PAGE - STYLESHEET
   SilTech Industries
   
   Structure:
   1. CSS Variables (Theme)
   2. Reset & Base Styles
   3. Typography
   4. Layout & Container
   5. Components (Buttons, Cards, Forms)
   6. Header & Navigation
   7. Hero Section
   8. Products Section
   9. Platform Section
   10. Industries Section
   11. Features Section
   12. How It Works Section
   13. Testimonials Section
   14. Lead Form Section
   15. Footer
   16. Floating Elements (WhatsApp)
   17. Animations
   18. Responsive (Mobile)
   ============================================ */

/* ============================================
   1. CSS VARIABLES (THEME)
   ============================================ */
:root {
    /* Colors - Dark Theme */
    --bg-primary: #0a0a0f;
    --bg-secondary: #12121a;
    --bg-card: #1a1a24;
    --bg-card-hover: #22222e;
    
    /* Accent Colors */
    --accent-primary: #00d4aa;      /* Teal/Green */
    --accent-secondary: #0ea5e9;    /* Blue */
    --accent-gradient: linear-gradient(135deg, #00d4aa 0%, #0ea5e9 100%);
    
    /* Text Colors */
    --text-primary: #ffffff;
    --text-secondary: #a0a0b0;
    --text-muted: #6b6b7b;
    
    /* Borders */
    --border-color: #2a2a3a;
    --border-light: #3a3a4a;
    
    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 20px rgba(0, 212, 170, 0.3);
    
    /* Spacing */
    --section-padding: 40px 0;
    --container-width: 1200px;
    --border-radius: 12px;
    --border-radius-sm: 8px;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    
    /* Font */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

/* ============================================
   2. RESET & BASE STYLES
   ============================================ */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-family);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    padding-top: 82px; /* Account for fixed header */
}

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

a {
    color: var(--accent-primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--accent-secondary);
}

ul, ol {
    list-style: none;
}

/* ============================================
   3. TYPOGRAPHY
   ============================================ */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1rem;
}

h1 { font-size: 3rem; }
h2 { font-size: 2.25rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }
h5 { font-size: 1rem; }

p {
    margin-bottom: 1rem;
    color: var(--text-secondary);
}

.text-gradient {
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.text-accent {
    color: var(--accent-primary);
}

.text-center { text-align: center; }
.text-muted { color: var(--text-muted); }

/* ============================================
   4. LAYOUT & CONTAINER
   ============================================ */
.container {
    width: 100%;
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 20px;
}

.section {
    padding: var(--section-padding);
}

.section-header {
    text-align: center;
    margin-bottom: 50px;
}

.section-header h2 {
    margin-bottom: 1rem;
}

.section-header p {
    max-width: 600px;
    margin: 0 auto;
}

.grid {
    display: grid;
    gap: 24px;
}

.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

.flex {
    display: flex;
}

.flex-center {
    display: flex;
    align-items: center;
    justify-content: center;
}

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

/* ============================================
   5. COMPONENTS - BUTTONS
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 28px;
    font-size: 1rem;
    font-weight: 600;
    border: none;
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    transition: all var(--transition-normal);
    text-decoration: none;
}

.btn-primary {
    background: var(--accent-gradient);
    color: var(--bg-primary);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
    color: var(--bg-primary);
}

.btn-outline {
    background: transparent;
    color: var(--text-primary);
    border: 1px solid var(--border-light);
}

.btn-outline:hover {
    border-color: var(--accent-primary);
    color: var(--accent-primary);
}

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

.btn-secondary:hover {
    border-color: var(--accent-primary);
    color: var(--accent-primary);
}

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

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

.btn-sm {
    padding: 10px 20px;
    font-size: 0.875rem;
}

.btn-lg {
    padding: 18px 36px;
    font-size: 1.125rem;
}

.btn-icon {
    width: 44px;
    height: 44px;
    padding: 0;
    border-radius: 50%;
}

/* ============================================
   5. COMPONENTS - CARDS
   ============================================ */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 24px;
    transition: all var(--transition-normal);
}

.card:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-light);
    transform: translateY(-4px);
}

.card-icon {
    width: 56px;
    height: 44px;
    background: var(--accent-gradient);
    border-radius: var(--border-radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin-bottom: 16px;
}

.card-title {
    font-size: 1.25rem;
    margin-bottom: 8px;
}

.card-text {
    color: var(--text-secondary);
    font-size: 0.9375rem;
}

/* Product Card */
.product-card {
    text-align: center;
    padding: 32px 24px;
    text-decoration: none;
    display: block;
    transition: transform 0.2s, box-shadow 0.2s;
}

.product-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
}

.product-card .card-image {
    width: 120px;
    height: 120px;
    object-fit: contain;
    margin: 0 auto 20px;
    display: block;
}

.product-card .card-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 20px;
    font-size: 2rem;
}

.product-card .card-title {
    font-size: 1.375rem;
    color: var(--text-primary);
}

.product-card .card-text {
    color: var(--text-secondary);
}

.product-card .card-link {
    display: inline-block;
    margin-top: 16px;
    color: var(--primary);
    font-weight: 500;
    font-size: 0.875rem;
}

.product-card .btn {
    margin-top: 16px;
}

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

.mt-3 {
    margin-top: 1.5rem;
}

/* ============================================
   5. COMPONENTS - FORMS
   ============================================ */
.form-group {
    margin-bottom: 20px;
}

.form-label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--text-secondary);
}

.form-input,
.form-textarea {
    width: 100%;
    padding: 14px 16px;
    font-size: 1rem;
    font-family: inherit;
    color: var(--text-primary);
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    transition: all var(--transition-fast);
}

.form-input:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px rgba(0, 212, 170, 0.1);
}

.form-input::placeholder,
.form-textarea::placeholder {
    color: var(--text-muted);
}

.form-textarea {
    min-height: 120px;
    resize: vertical;
}

/* ============================================
   6. HEADER & NAVIGATION
   ============================================ */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(10, 10, 15, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    transition: all var(--transition-normal);
    padding: 0 24px;
}

.header.scrolled {
    background: rgba(10, 10, 15, 0.98);
}

.header-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 8px 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
}

.logo-img {
    width: 120px;
    height: auto;
}

.logo img {
    width: 120px;
    height: auto;
}

.logo-text span {
    color: var(--accent-primary);
}

.nav {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-link {
    color: var(--text-secondary);
    font-weight: 500;
    transition: color var(--transition-fast);
}

.nav-link:hover,
.nav-link.active {
    color: var(--text-primary);
}

.nav-cta {
    margin-left: 16px;
    display: flex;
    gap: 8px;
}

/* Mobile Menu Toggle */
.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.menu-toggle span {
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    transition: all var(--transition-fast);
}

/* ============================================
   7. HERO SECTION
   ============================================ */
.hero {
    display: flex;
    align-items: center;
    padding: 48px 0 64px;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(ellipse at 30% 20%, rgba(0, 212, 170, 0.1) 0%, transparent 50%),
                radial-gradient(ellipse at 70% 80%, rgba(14, 165, 233, 0.1) 0%, transparent 50%);
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 50px;
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: 24px;
}

.hero-badge span {
    color: var(--accent-primary);
}

.hero h1 {
    font-size: 3.5rem;
    line-height: 1.1;
    margin-bottom: 24px;
}

.hero p {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 32px;
    max-width: 600px;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

/* ============================================
   STATS SECTION (Standalone)
   ============================================ */
.stats-section {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
    padding: 48px 0;
}

.stats-grid {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 64px;
    flex-wrap: wrap;
}

.stat-item {
    text-align: center;
    min-width: 140px;
}

.stat-value {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--accent-primary);
    line-height: 1.2;
}

.stat-label {
    font-size: 0.95rem;
    color: var(--text-secondary);
    margin-top: 8px;
}

@media (max-width: 768px) {
    .hero {
        padding: 32px 0 48px;
    }
    
    .stats-section {
        padding: 32px 0;
    }
    
    .stats-grid {
        gap: 32px;
    }
    
    .stat-item {
        min-width: 100px;
    }
    
    .stat-value {
        font-size: 2rem;
    }
    
    .stat-label {
        font-size: 0.85rem;
    }
}

@media (max-width: 480px) {
    .stats-grid {
        gap: 24px;
    }
    
    .stat-item {
        min-width: 80px;
    }
    
    .stat-value {
        font-size: 1.75rem;
    }
}

/* Old hero-stats - keeping for backwards compatibility */
.hero-stats {
    display: flex;
    gap: 48px;
    margin-top: 48px;
    padding-top: 48px;
    border-top: 1px solid var(--border-color);
    justify-content: center;
    width: 100vw;
    position: relative;
    left: 50%;
    transform: translateX(-50%);
    max-width: 100%;
    padding-left: 24px;
    padding-right: 24px;
    box-sizing: border-box;
}

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

.hero-stat-value {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--accent-primary);
}

.hero-stat-label {
    color: var(--text-muted);
    font-size: 0.875rem;
}

/* ============================================
   8. PRODUCTS SECTION
   ============================================ */
.products {
    background: var(--bg-secondary);
}

.product-tabs {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.product-tab {
    padding: 12px 24px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 50px;
    color: var(--text-secondary);
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.product-tab:hover,
.product-tab.active {
    background: var(--accent-primary);
    border-color: var(--accent-primary);
    color: var(--bg-primary);
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

/* ============================================
   8.5. DATA FLOW SECTION
   ============================================ */
.dataflow {
    background: var(--bg-primary);
}

.dataflow-diagram {
    margin-top: 32px;
    text-align: center;
}

.dataflow-diagram object,
.dataflow-image {
    width: 100%;
    max-width: 1200px;
    height: auto;
    min-height: 400px;
    border-radius: 12px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

@media (max-width: 768px) {
    .dataflow-diagram object,
    .dataflow-image {
        border-radius: 8px;
        min-height: 250px;
    }
}

/* ============================================
   9. PLATFORM SECTION
   ============================================ */
.platform {
    position: relative;
}

.platform-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.platform-features {
    display: grid;
    gap: 20px;
}

.platform-feature {
    display: flex;
    gap: 16px;
    padding: 20px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    transition: all var(--transition-normal);
}

.platform-feature:hover {
    border-color: var(--accent-primary);
}

.platform-feature-icon {
    width: 48px;
    height: 48px;
    background: var(--accent-gradient);
    border-radius: var(--border-radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    flex-shrink: 0;
}

.platform-feature h4 {
    margin-bottom: 4px;
}

.platform-feature p {
    margin: 0;
    font-size: 0.9375rem;
}

.platform-visual {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 24px;
    min-height: 400px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.platform-mockup {
    width: 100%;
    text-align: center;
    color: var(--text-muted);
}

.platform-screenshot {
    width: 100%;
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
    border: 1px solid var(--border-color);
    image-rendering: -webkit-optimize-contrast;
    image-rendering: crisp-edges;
}

/* ============================================
   10. INDUSTRIES SECTION
   ============================================ */
.industries {
    background: var(--bg-secondary);
}

.industries-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.industry-card {
    text-align: center;
    padding: 32px 24px;
}

.industry-card .card-icon {
    margin: 0 auto 16px;
}

/* ============================================
   11. FEATURES SECTION
   ============================================ */
.features-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.feature-card {
    display: flex;
    gap: 20px;
    padding: 28px;
}

.feature-card .card-icon {
    flex-shrink: 0;
}

/* ============================================
   12. HOW IT WORKS SECTION
   ============================================ */
.how-it-works {
    background: var(--bg-secondary);
}

.steps {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    position: relative;
}

.steps::before {
    content: '';
    position: absolute;
    top: 40px;
    left: 12.5%;
    right: 12.5%;
    height: 2px;
    background: var(--border-color);
    z-index: 0;
}

.step {
    text-align: center;
    position: relative;
    z-index: 1;
}

.step-number {
    width: 80px;
    height: 80px;
    background: var(--accent-gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--bg-primary);
    margin: 0 auto 20px;
}

.step h4 {
    margin-bottom: 8px;
}

.step p {
    font-size: 0.9375rem;
}

/* ============================================
   13. TESTIMONIALS SECTION
   ============================================ */
.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.testimonial-card {
    padding: 28px;
}

.testimonial-text {
    font-size: 1rem;
    font-style: italic;
    color: var(--text-secondary);
    margin-bottom: 20px;
    line-height: 1.7;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 12px;
}

.testimonial-avatar {
    width: 48px;
    height: 48px;
    background: var(--accent-gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    color: var(--bg-primary);
}

.testimonial-name {
    font-weight: 600;
    margin-bottom: 2px;
}

.testimonial-role {
    font-size: 0.875rem;
    color: var(--text-muted);
}

/* ============================================
   14. LEAD FORM SECTION
   ============================================ */
.lead-form-section {
    background: var(--bg-secondary);
}

.lead-form-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.lead-form-content h2 {
    margin-bottom: 16px;
}

.lead-form-content p {
    margin-bottom: 24px;
}

.lead-form-benefits {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.lead-form-benefit {
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--text-secondary);
}

.lead-form-benefit svg {
    color: var(--accent-primary);
    flex-shrink: 0;
}

.lead-form {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 32px;
}

.lead-form h3 {
    margin-bottom: 24px;
    text-align: center;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.form-submit {
    margin-top: 8px;
}

.form-submit .btn {
    width: 100%;
}

.form-note {
    text-align: center;
    margin-top: 16px;
    font-size: 0.8125rem;
    color: var(--text-muted);
}

.form-note a {
    color: var(--accent-primary);
}

/* Contact Form Section */
.contact-content {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 60px;
    align-items: start;
}

.contact-form {
    background: var(--bg-secondary);
    padding: 40px;
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--border-color);
}

.contact-form label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.contact-form input,
.contact-form textarea {
    width: 100%;
    padding: 14px 16px;
    font-size: 1rem;
    font-family: inherit;
    color: var(--text-primary);
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    transition: all var(--transition-fast);
}

.contact-form input:focus,
.contact-form textarea:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px rgba(0, 212, 170, 0.1);
}

.contact-form input::placeholder,
.contact-form textarea::placeholder {
    color: var(--text-muted);
}

.contact-form textarea {
    min-height: 120px;
    resize: vertical;
}

.contact-form .btn-full {
    width: 100%;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.contact-info-item {
    display: flex;
    align-items: flex-start;
    gap: 16px;
}

.contact-info-icon {
    font-size: 1.5rem;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-secondary);
    border-radius: var(--border-radius-sm);
}

.contact-info-item h4 {
    margin-bottom: 4px;
    font-weight: 600;
}

.contact-info-item a,
.contact-info-item p {
    color: var(--text-secondary);
    font-size: 0.9375rem;
}

.contact-info-item a:hover {
    color: var(--accent-primary);
}

@media (max-width: 768px) {
    .contact-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .contact-form {
        padding: 24px;
    }
}

/* ============================================
   15. FOOTER
   ============================================ */
.footer {
    background: var(--bg-primary);
    border-top: 1px solid var(--border-color);
    padding: 60px 0 24px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-brand p {
    margin-top: 16px;
    font-size: 0.9375rem;
}

/* ============================================
   FAQ SECTION
   ============================================ */
.faq-section {
    background: var(--bg-secondary);
}

.faq-grid {
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.faq-item {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    overflow: hidden;
    transition: border-color var(--transition-fast);
}

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

.faq-question {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 24px;
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 1rem;
    font-weight: 600;
    text-align: left;
    cursor: pointer;
    transition: color var(--transition-fast);
}

.faq-question:hover {
    color: var(--accent-primary);
}

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

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

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease-out;
}

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

.faq-answer p {
    padding: 0 24px 20px;
    color: var(--text-secondary);
    line-height: 1.7;
}

.faq-answer strong {
    color: var(--text-primary);
}

.footer-social {
    display: flex;
    gap: 12px;
    margin-top: 20px;
}

.footer-social a {
    width: 40px;
    height: 40px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    transition: all var(--transition-fast);
}

.footer-social a:hover {
    background: var(--accent-primary);
    border-color: var(--accent-primary);
    color: var(--bg-primary);
}

.footer-title {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 20px;
    color: var(--text-primary);
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-links a {
    color: var(--text-secondary);
    font-size: 0.9375rem;
    transition: color var(--transition-fast);
}

.footer-links a:hover {
    color: var(--accent-primary);
}

.footer-contact-item {
    display: flex;
    gap: 12px;
    margin-bottom: 12px;
    color: var(--text-secondary);
    font-size: 0.9375rem;
}

.footer-contact-item svg {
    color: var(--accent-primary);
    flex-shrink: 0;
    margin-top: 2px;
}

.footer-bottom {
    padding-top: 24px;
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.875rem;
    color: var(--text-muted);
}

.footer-bottom-links {
    display: flex;
    gap: 24px;
}

.footer-bottom-links a {
    color: var(--text-muted);
}

.footer-bottom-links a:hover {
    color: var(--accent-primary);
}

/* ============================================
   16. FLOATING ELEMENTS
   ============================================ */
.whatsapp-float {
    position: fixed;
    bottom: 24px;
    right: 24px;
    z-index: 999;
}

.whatsapp-btn {
    width: 60px;
    height: 60px;
    background: #25D366;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.75rem;
    box-shadow: var(--shadow-lg);
    transition: all var(--transition-normal);
}

.whatsapp-btn:hover {
    transform: scale(1.1);
    box-shadow: 0 8px 24px rgba(37, 211, 102, 0.4);
    color: white;
}

/* Scroll to Top */
.scroll-top {
    position: fixed;
    bottom: 24px;
    right: 96px;
    z-index: 998;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
}

.scroll-top.visible {
    opacity: 1;
    visibility: visible;
}

.scroll-top-btn {
    width: 48px;
    height: 48px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.scroll-top-btn:hover {
    background: var(--accent-primary);
    border-color: var(--accent-primary);
    color: var(--bg-primary);
}

/* ============================================
   17. ANIMATIONS
   ============================================ */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
}

.animate-fade-in-up {
    animation: fadeInUp 0.6s ease forwards;
}

.animate-delay-1 { animation-delay: 0.1s; }
.animate-delay-2 { animation-delay: 0.2s; }
.animate-delay-3 { animation-delay: 0.3s; }
.animate-delay-4 { animation-delay: 0.4s; }

/* ============================================
   18. RESPONSIVE (MOBILE)
   ============================================ */
@media (max-width: 1024px) {
    .grid-4 { grid-template-columns: repeat(2, 1fr); }
    .products-grid { grid-template-columns: repeat(2, 1fr); }
    .steps { grid-template-columns: repeat(2, 1fr); }
    .steps::before { display: none; }
    .platform-content { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
    body {
        padding-top: 82px;
    }
    
    :root {
        --section-padding: 40px 0;
    }
    
    h1 { font-size: 2.25rem; }
    h2 { font-size: 1.75rem; }
    h3 { font-size: 1.25rem; }
    
    .hero h1 { font-size: 2.5rem; }
    .hero p { font-size: 1.125rem; }
    
    .nav {
        position: fixed;
        top: 72px;
        left: 0;
        right: 0;
        background: var(--bg-primary);
        border-bottom: 1px solid var(--border-color);
        flex-direction: column;
        padding: 24px;
        gap: 16px;
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition-normal);
    }
    
    .nav.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    
    .nav-cta {
        margin-left: 0;
        width: 100%;
    }
    
    .nav-cta .btn {
        width: 100%;
    }
    
    .menu-toggle {
        display: flex;
    }
    
    .grid-2,
    .grid-3,
    .products-grid,
    .industries-grid,
    .testimonials-grid,
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .steps {
        grid-template-columns: 1fr;
        gap: 32px;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: 24px;
    }
    
    .hero-buttons {
        flex-direction: column;
    }
    
    .hero-buttons .btn {
        width: 100%;
    }
    
    .lead-form-wrapper {
        grid-template-columns: 1fr;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: 16px;
        text-align: center;
    }
    
    .product-tabs {
        flex-direction: column;
        align-items: stretch;
    }
    
    .product-tab {
        text-align: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }
    
    .hero h1 { font-size: 2rem; }
    
    .hero-stat-value { font-size: 2rem; }
    
    .card {
        padding: 20px;
    }
    
    .lead-form {
        padding: 24px;
    }
    
    .whatsapp-float {
        bottom: 16px;
        right: 16px;
    }
    
    .whatsapp-btn {
        width: 54px;
        height: 54px;
    }
}

/* ============================================
   UTILITY CLASSES
   ============================================ */
.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: 8px; }
.mb-2 { margin-bottom: 16px; }
.mb-3 { margin-bottom: 24px; }
.mb-4 { margin-bottom: 32px; }

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: 8px; }
.mt-2 { margin-top: 16px; }
.mt-3 { margin-top: 24px; }
.mt-4 { margin-top: 32px; }

.hidden { display: none; }
.visible { display: block; }

/* Catalog Download Button */
.catalog-btn {
    margin-top: 20px;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.section-header .catalog-btn {
    margin-top: 20px;
}