/* ===========================
   Vanguard Agency - Main Styles
   =========================== */

/* Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&family=Outfit:wght@300;400;500;600;700;800&display=swap');

/* ===========================
   CSS Variables / Design Tokens
   =========================== */
:root {
    --color-primary: #2B6CB0;
    --color-primary-dark: #1a4a7a;
    --color-secondary: #0b4375;
    --color-accent: #00A4C4;
    --color-accent-orange: #e09535;
    --color-bg-dark: #000119;
    --color-bg-light: #f7fafc;
    --color-bg-white: #ffffff;
    --color-text: #4a5568;
    --color-text-dark: #1a202c;
    --color-text-light: #718096;
    --color-border: #e2e8f0;
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-heading: 'Outfit', 'Inter', sans-serif;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 14px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.12);
    --shadow-xl: 0 20px 50px rgba(0, 0, 0, 0.15);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 30px;
    --transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    --max-width: 1240px;
}

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

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

body {
    font-family: var(--font-primary);
    color: var(--color-text);
    background-color: var(--color-bg-white);
    line-height: 1.7;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

ul, ol {
    list-style: none;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    color: var(--color-text-dark);
    line-height: 1.3;
    font-weight: 700;
}

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
}

/* ===========================
   Top Bar (Action Bar)
   =========================== */
.top-bar {
    background: var(--color-secondary);
    padding: 8px 0;
    font-size: 0.8rem;
    color: rgba(255, 255, 255, 0.8);
    border-bottom: 3px solid var(--color-accent);
}

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

.top-bar-left {
    display: flex;
    align-items: center;
    gap: 20px;
}

.top-bar-left a {
    color: rgba(255, 255, 255, 0.8);
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.8rem;
}

.top-bar-left a:hover {
    color: #ffffff;
}

.top-bar-right {
    display: flex;
    gap: 12px;
}

.top-bar-right a {
    color: rgba(255, 255, 255, 0.7);
    font-size: 1rem;
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: var(--transition);
}

.top-bar-right a:hover {
    color: #fff;
    background: rgba(255, 255, 255, 0.15);
}

/* ===========================
   Header / Navigation
   =========================== */
.site-header {
    background: var(--color-bg-white);
    padding: 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.site-header.scrolled {
    box-shadow: var(--shadow-md);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: 80px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-shrink: 0;
}

.logo img {
    height: 50px;
    width: auto;
}

.logo-text {
    font-family: var(--font-heading);
    font-size: 1.8rem;
    font-weight: 800;
    color: var(--color-secondary);
    letter-spacing: -0.5px;
}

.main-nav {
    display: flex;
    align-items: center;
    gap: 8px;
}

.main-nav a {
    font-size: 0.95rem;
    font-weight: 600;
    color: #444;
    padding: 10px 18px;
    border-radius: var(--radius-sm);
    position: relative;
    transition: var(--transition);
}

.main-nav a::after {
    content: '';
    position: absolute;
    bottom: 4px;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--color-primary);
    transform: translateX(-50%);
    transition: width 0.3s ease;
}

.main-nav a:hover::after,
.main-nav a.active::after {
    width: 60%;
}

.main-nav a:hover,
.main-nav a.active {
    color: var(--color-primary);
}

.header-cta {
    display: flex;
    align-items: center;
    gap: 12px;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 28px;
    border-radius: var(--radius-sm);
    font-family: var(--font-primary);
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    border: none;
    transition: var(--transition);
    white-space: nowrap;
}

.btn-primary {
    background: var(--color-primary);
    color: #fff;
    box-shadow: 0 4px 12px rgba(43, 108, 176, 0.3);
}

.btn-primary:hover {
    background: var(--color-primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(43, 108, 176, 0.4);
}

.btn-accent {
    background: var(--color-accent-orange);
    color: #fff;
    box-shadow: 0 4px 12px rgba(224, 149, 53, 0.3);
}

.btn-accent:hover {
    background: #c8832a;
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(224, 149, 53, 0.4);
}

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

.btn-outline:hover {
    background: var(--color-primary);
    color: #fff;
    transform: translateY(-2px);
}

.btn-white {
    background: #fff;
    color: var(--color-secondary);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.btn-white:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
}

.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.6rem;
    cursor: pointer;
    color: var(--color-secondary);
    padding: 8px;
    border-radius: var(--radius-sm);
}

/* ===========================
   Hero Section
   =========================== */
.hero {
    position: relative;
    min-height: 85vh;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, var(--color-bg-dark) 0%, var(--color-secondary) 50%, var(--color-primary) 100%);
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('../images/hero-banner.png') center/cover no-repeat;
    opacity: 0.3;
}

.hero::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(0, 1, 25, 0.85) 0%, rgba(11, 67, 117, 0.7) 50%, rgba(43, 108, 176, 0.6) 100%);
}

.hero .container {
    position: relative;
    z-index: 2;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.hero-content {
    padding: 40px 0;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 18px;
    background: rgba(0, 164, 196, 0.2);
    border: 1px solid rgba(0, 164, 196, 0.4);
    border-radius: 50px;
    color: var(--color-accent);
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 24px;
    backdrop-filter: blur(10px);
}

.hero-title {
    font-size: clamp(2.2rem, 5vw, 3.5rem);
    font-weight: 800;
    color: #fff;
    line-height: 1.15;
    margin-bottom: 20px;
    letter-spacing: -1px;
}

.hero-title span {
    background: linear-gradient(135deg, var(--color-accent), #4dd0e1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-description {
    font-size: 1.15rem;
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.8;
    margin-bottom: 36px;
    max-width: 520px;
}

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

.hero-form {
    background: rgba(255, 255, 255, 0.95);
    border-radius: var(--radius-lg);
    padding: 36px;
    backdrop-filter: blur(20px);
    box-shadow: var(--shadow-xl);
}

.hero-form h3 {
    font-size: 1.4rem;
    text-align: center;
    margin-bottom: 6px;
    color: var(--color-text-dark);
}

.hero-form p {
    text-align: center;
    font-size: 0.9rem;
    color: var(--color-text-light);
    margin-bottom: 24px;
}

.form-group {
    margin-bottom: 14px;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-family: var(--font-primary);
    font-size: 0.9rem;
    color: var(--color-text);
    background: #f8fafc;
    transition: var(--transition);
    outline: none;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--color-primary);
    background: #fff;
    box-shadow: 0 0 0 3px rgba(43, 108, 176, 0.1);
}

.form-group textarea {
    resize: none;
    height: 90px;
}

.hero-form .btn {
    width: 100%;
    padding: 14px 28px;
    font-size: 1rem;
}

/* Floating animation */
@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-15px); }
}

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

.hero-content {
    animation: fadeInUp 0.8s ease-out;
}

.hero-form {
    animation: fadeInUp 1s ease-out 0.2s both;
}

/* Hero Stats */
.hero-stats {
    display: flex;
    gap: 40px;
    margin-top: 48px;
}

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

.hero-stat .number {
    font-size: 2rem;
    font-weight: 800;
    color: #fff;
    font-family: var(--font-heading);
}

.hero-stat .label {
    font-size: 0.8rem;
    color: rgba(255, 255, 255, 0.6);
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* ===========================
   Section Styles
   =========================== */
.section {
    padding: 80px 0;
}

.section-dark {
    background: var(--color-bg-dark);
    color: #fff;
}

.section-light {
    background: var(--color-bg-light);
}

.section-gradient {
    background: linear-gradient(180deg, var(--color-bg-white) 0%, var(--color-bg-light) 100%);
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 60px;
}

.section-label {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--color-primary);
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 16px;
}

.section-label::before,
.section-label::after {
    content: '';
    width: 24px;
    height: 2px;
    background: var(--color-primary);
}

.section-title {
    font-size: clamp(1.8rem, 4vw, 2.8rem);
    font-weight: 800;
    margin-bottom: 16px;
    color: var(--color-text-dark);
    letter-spacing: -0.5px;
}

.section-dark .section-title {
    color: #fff;
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--color-text-light);
    line-height: 1.8;
}

/* ===========================
   Services Section
   =========================== */
.services-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.service-card {
    background: var(--color-bg-white);
    border-radius: var(--radius-md);
    padding: 32px 24px;
    text-align: center;
    transition: var(--transition);
    border: 1px solid var(--color-border);
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
    transform: scaleX(0);
    transition: transform 0.4s ease;
}

.service-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: transparent;
}

.service-card:hover::before {
    transform: scaleX(1);
}

.service-icon {
    width: 72px;
    height: 72px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    font-size: 2rem;
    background: linear-gradient(135deg, rgba(43, 108, 176, 0.1), rgba(0, 164, 196, 0.1));
    color: var(--color-primary);
    transition: var(--transition);
}

.service-card:hover .service-icon {
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    color: #fff;
    transform: scale(1.1);
}

.service-card h3 {
    font-size: 1.1rem;
    margin-bottom: 12px;
    font-weight: 700;
}

.service-card p {
    font-size: 0.9rem;
    color: var(--color-text-light);
    line-height: 1.6;
}

.service-card .service-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    margin-top: 16px;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--color-primary);
    transition: var(--transition);
}

.service-card:hover .service-link {
    gap: 10px;
}

/* ===========================
   Features / Highlights
   =========================== */
.features-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    margin-bottom: 80px;
}

.features-row:last-child {
    margin-bottom: 0;
}

.features-row.reverse {
    direction: rtl;
}

.features-row.reverse > * {
    direction: ltr;
}

.feature-image {
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    position: relative;
}

.feature-image img {
    width: 100%;
    height: 400px;
    object-fit: cover;
    transition: transform 0.6s ease;
}

.feature-image:hover img {
    transform: scale(1.05);
}

.feature-info h2 {
    font-size: 2rem;
    margin-bottom: 16px;
    color: var(--color-text-dark);
}

.feature-info p {
    font-size: 1.05rem;
    color: var(--color-text);
    line-height: 1.8;
    margin-bottom: 24px;
}

.feature-list {
    display: flex;
    flex-direction: column;
    gap: 14px;
    margin-bottom: 28px;
}

.feature-list-item {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    font-size: 0.95rem;
}

.feature-list-item .check-icon {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    color: #fff;
    font-size: 0.7rem;
    margin-top: 2px;
}

/* ===========================
   Why Choose Us
   =========================== */
.advantages-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.advantage-card {
    background: var(--color-bg-white);
    border-radius: var(--radius-md);
    padding: 36px;
    transition: var(--transition);
    border: 1px solid var(--color-border);
    position: relative;
}

.advantage-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.advantage-number {
    font-size: 3rem;
    font-weight: 900;
    color: rgba(43, 108, 176, 0.1);
    font-family: var(--font-heading);
    line-height: 1;
    margin-bottom: 16px;
}

.advantage-card h3 {
    font-size: 1.2rem;
    margin-bottom: 12px;
    color: var(--color-secondary);
}

.advantage-card p {
    font-size: 0.9rem;
    color: var(--color-text-light);
    line-height: 1.7;
}

/* ===========================
   Testimonials
   =========================== */
.testimonials-slider {
    max-width: 800px;
    margin: 0 auto;
}

.testimonial-card {
    background: var(--color-bg-white);
    border-radius: var(--radius-lg);
    padding: 40px;
    text-align: center;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--color-border);
}

.testimonial-quote {
    font-size: 1.15rem;
    line-height: 1.8;
    color: var(--color-text);
    font-style: italic;
    margin-bottom: 28px;
    position: relative;
}

.testimonial-quote::before {
    content: '"';
    font-size: 4rem;
    color: var(--color-primary);
    opacity: 0.2;
    position: absolute;
    top: -20px;
    left: 50%;
    transform: translateX(-50%);
    font-family: Georgia, serif;
}

.testimonial-author {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 14px;
}

.testimonial-avatar {
    width: 52px;
    height: 52px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-weight: 700;
    font-size: 1.2rem;
}

.testimonial-info h4 {
    font-size: 1rem;
    color: var(--color-text-dark);
    margin-bottom: 2px;
}

.testimonial-info span {
    font-size: 0.85rem;
    color: var(--color-text-light);
}

/* ===========================
   CTA Section
   =========================== */
.cta-section {
    padding: 80px 0;
    background: linear-gradient(135deg, var(--color-secondary) 0%, var(--color-primary) 100%);
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 500px;
    height: 500px;
    border-radius: 50%;
    background: rgba(0, 164, 196, 0.15);
    filter: blur(80px);
}

.cta-content {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 700px;
    margin: 0 auto;
}

.cta-content h2 {
    font-size: clamp(1.8rem, 4vw, 2.5rem);
    color: #fff;
    margin-bottom: 16px;
}

.cta-content p {
    font-size: 1.1rem;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 32px;
}

.cta-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

/* ===========================
   Contact Section
   =========================== */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
}

.contact-info-card {
    background: var(--color-secondary);
    border-radius: var(--radius-lg);
    padding: 40px;
    color: #fff;
}

.contact-info-card h3 {
    color: #fff;
    font-size: 1.5rem;
    margin-bottom: 24px;
}

.contact-detail {
    display: flex;
    align-items: flex-start;
    gap: 14px;
    margin-bottom: 24px;
}

.contact-detail-icon {
    width: 44px;
    height: 44px;
    border-radius: var(--radius-sm);
    background: rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    font-size: 1.2rem;
}

.contact-detail h4 {
    color: #fff;
    font-size: 0.95rem;
    margin-bottom: 4px;
}

.contact-detail p {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.9rem;
}

.contact-social {
    display: flex;
    gap: 12px;
    margin-top: 30px;
}

.contact-social a {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-sm);
    background: rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    transition: var(--transition);
}

.contact-social a:hover {
    background: var(--color-accent);
    transform: translateY(-3px);
}

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

.contact-form-card h3 {
    font-size: 1.5rem;
    margin-bottom: 24px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px;
}

/* ===========================
   Clients Section
   =========================== */
.clients-marquee {
    display: flex;
    gap: 60px;
    align-items: center;
    animation: marquee 30s linear infinite;
    padding: 30px 0;
}

@keyframes marquee {
    from { transform: translateX(0); }
    to { transform: translateX(-50%); }
}

.client-logo {
    height: 45px;
    opacity: 0.4;
    filter: grayscale(100%);
    transition: var(--transition);
    flex-shrink: 0;
}

.client-logo:hover {
    opacity: 1;
    filter: grayscale(0);
}

/* ===========================
   Footer
   =========================== */
.site-footer {
    background: #0a0f1e;
    color: #8892a8;
    padding: 70px 0 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    padding-bottom: 50px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-brand {
    max-width: 300px;
}

.footer-brand .logo {
    margin-bottom: 20px;
}

.footer-brand .logo img {
    height: 40px;
    filter: brightness(0) invert(1);
}

.footer-brand .logo-text {
    color: #fff;
}

.footer-brand p {
    font-size: 0.9rem;
    line-height: 1.8;
    margin-bottom: 20px;
}

.footer-social {
    display: flex;
    gap: 10px;
}

.footer-social a {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-sm);
    background: rgba(255, 255, 255, 0.05);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #8892a8;
    transition: var(--transition);
}

.footer-social a:hover {
    background: var(--color-primary);
    color: #fff;
    transform: translateY(-2px);
}

.footer-col h4 {
    color: #fff;
    font-size: 1rem;
    margin-bottom: 20px;
    font-weight: 700;
}

.footer-col ul li {
    margin-bottom: 10px;
}

.footer-col ul li a {
    font-size: 0.9rem;
    color: #8892a8;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 6px;
}

.footer-col ul li a:hover {
    color: var(--color-accent);
    padding-left: 4px;
}

.footer-bottom {
    padding: 24px 0;
    text-align: center;
    font-size: 0.85rem;
}

.footer-bottom p {
    margin-bottom: 4px;
}

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

/* ===========================
   WhatsApp Float
   =========================== */
.whatsapp-float {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 60px;
    height: 60px;
    background: #25d366;
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    box-shadow: 0 4px 15px rgba(37, 211, 102, 0.4);
    transition: var(--transition);
    animation: pulse-whatsapp 2s infinite;
}

.whatsapp-float:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 20px rgba(37, 211, 102, 0.5);
}

.whatsapp-float svg {
    width: 32px;
    height: 32px;
    fill: white;
}

@keyframes pulse-whatsapp {
    0% { box-shadow: 0 0 0 0 rgba(37, 211, 102, 0.5); }
    70% { box-shadow: 0 0 0 15px rgba(37, 211, 102, 0); }
    100% { box-shadow: 0 0 0 0 rgba(37, 211, 102, 0); }
}

/* ===========================
   Scroll to Top
   =========================== */
.scroll-top {
    position: fixed;
    bottom: 100px;
    right: 30px;
    width: 44px;
    height: 44px;
    background: var(--color-secondary);
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    opacity: 0;
    pointer-events: none;
    transition: var(--transition);
    z-index: 9998;
    border: none;
    box-shadow: var(--shadow-md);
}

.scroll-top.visible {
    opacity: 1;
    pointer-events: all;
}

.scroll-top:hover {
    background: var(--color-primary);
    transform: translateY(-3px);
}

/* ===========================
   Animations (Scroll triggered)
   =========================== */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

.fade-in-left {
    opacity: 0;
    transform: translateX(-40px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.fade-in-left.visible {
    opacity: 1;
    transform: translateX(0);
}

.fade-in-right {
    opacity: 0;
    transform: translateX(40px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.fade-in-right.visible {
    opacity: 1;
    transform: translateX(0);
}

/* ===========================
   Responsive Design
   =========================== */
@media (max-width: 1024px) {
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .features-row {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .features-row.reverse {
        direction: ltr;
    }

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

    .hero .container {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
}

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

    .main-nav {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: #fff;
        flex-direction: column;
        padding: 20px;
        box-shadow: var(--shadow-lg);
        border-top: 1px solid var(--color-border);
        z-index: 999;
    }

    .main-nav.active {
        display: flex;
    }

    .main-nav a {
        padding: 12px 0;
        border-bottom: 1px solid var(--color-border);
        width: 100%;
    }

    .main-nav a::after {
        display: none;
    }

    .mobile-menu-toggle {
        display: block;
    }

    .header-cta {
        display: none;
    }

    .hero {
        min-height: auto;
        padding: 60px 0;
    }

    .hero .container {
        grid-template-columns: 1fr;
    }

    .hero-stats {
        gap: 24px;
    }

    .hero-stat .number {
        font-size: 1.5rem;
    }

    .services-grid {
        grid-template-columns: 1fr;
    }

    .advantages-grid {
        grid-template-columns: 1fr;
    }

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

    .form-row {
        grid-template-columns: 1fr;
    }

    .footer-grid {
        grid-template-columns: 1fr;
    }

    .section {
        padding: 50px 0;
    }

    .cta-section {
        padding: 50px 0;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 1.8rem;
    }

    .hero-buttons {
        flex-direction: column;
    }

    .hero-form {
        padding: 24px;
    }

    .section-title {
        font-size: 1.5rem;
    }
}