/* ===== CSS Custom Properties ===== */
:root {
    --bg-primary: #070e1a;
    --bg-secondary: #0c1929;
    --bg-card: #111d31;
    --bg-card-hover: #162238;
    --surface: #1a2d47;
    --surface-light: #1e3350;
    
    --teal-dark: #0d4a4a;
    --teal: #1a6b6b;
    --teal-light: #2d8f8f;
    --teal-glow: rgba(26, 107, 107, 0.3);
    
    --gold: #c9a84c;
    --gold-light: #dfc06e;
    --gold-dark: #a8893d;
    --gold-glow: rgba(201, 168, 76, 0.25);
    
    --slate-900: #0f172a;
    --slate-800: #1e293b;
    --slate-700: #334155;
    --slate-600: #475569;
    --slate-500: #64748b;
    --slate-400: #94a3b8;
    --slate-300: #cbd5e1;
    --slate-200: #e2e8f0;
    --slate-100: #f1f5f9;
    
    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    
    --font-heading: 'Playfair Display', Georgia, serif;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 28px;
    
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 8px 32px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 16px 64px rgba(0, 0, 0, 0.5);
    --shadow-gold: 0 4px 24px rgba(201, 168, 76, 0.2);
    --shadow-teal: 0 4px 24px rgba(26, 107, 107, 0.2);
    
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

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

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

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

ul {
    list-style: none;
}

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ===== Typography ===== */
h1, h2, h3, h4 {
    font-family: var(--font-heading);
    font-weight: 600;
    line-height: 1.2;
    color: var(--text-primary);
}

.gold-text {
    color: var(--gold);
}

/* ===== Navigation ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 20px 0;
    transition: var(--transition);
}

.navbar.scrolled {
    background: rgba(7, 14, 26, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    padding: 12px 0;
    border-bottom: 1px solid rgba(201, 168, 76, 0.1);
}

.nav-container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
}

.nav-logo:hover {
    color: var(--gold);
}

.logo-text {
    letter-spacing: -0.02em;
}

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

.nav-link {
    padding: 8px 16px;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-secondary);
    border-radius: var(--radius-sm);
    transition: var(--transition);
}

.nav-link:hover {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.05);
}

.nav-cta {
    background: linear-gradient(135deg, var(--gold), var(--gold-dark));
    color: var(--bg-primary) !important;
    font-weight: 600;
    padding: 10px 20px;
    border-radius: var(--radius-sm);
    margin-left: 8px;
}

.nav-cta:hover {
    background: linear-gradient(135deg, var(--gold-light), var(--gold));
    transform: translateY(-1px);
    box-shadow: var(--shadow-gold);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.hamburger {
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: var(--transition);
}

.nav-toggle.active .hamburger:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.nav-toggle.active .hamburger:nth-child(2) {
    opacity: 0;
}

.nav-toggle.active .hamburger:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* ===== Hero Section ===== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    z-index: 0;
}

.hero-bg img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        135deg,
        rgba(7, 14, 26, 0.92) 0%,
        rgba(7, 14, 26, 0.85) 40%,
        rgba(13, 74, 74, 0.7) 100%
    );
}

.hero-container {
    position: relative;
    z-index: 1;
    max-width: 1280px;
    margin: 0 auto;
    padding: 120px 24px 80px;
    display: grid;
    grid-template-columns: 1fr 420px;
    gap: 60px;
    align-items: center;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: rgba(201, 168, 76, 0.12);
    border: 1px solid rgba(201, 168, 76, 0.3);
    border-radius: 100px;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--gold);
    margin-bottom: 24px;
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: 24px;
    letter-spacing: -0.03em;
}

.hero-subtitle {
    font-size: 1.15rem;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 40px;
    max-width: 520px;
}

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

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 28px;
    font-family: var(--font-body);
    font-size: 0.95rem;
    font-weight: 600;
    border-radius: var(--radius-sm);
    border: none;
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
}

.btn-primary {
    background: linear-gradient(135deg, var(--gold), var(--gold-dark));
    color: var(--bg-primary);
    box-shadow: var(--shadow-gold);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 32px rgba(201, 168, 76, 0.35);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.08);
    color: var(--text-primary);
    border: 1px solid rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.12);
    border-color: rgba(255, 255, 255, 0.25);
    transform: translateY(-2px);
}

.btn-outline {
    background: transparent;
    color: var(--gold);
    border: 1.5px solid var(--gold);
}

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

.btn-full {
    width: 100%;
    justify-content: center;
}

/* ===== Hero Stat Cards ===== */
.hero-cards {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.stat-card {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 20px 24px;
    background: rgba(17, 29, 49, 0.8);
    border: 1px solid rgba(201, 168, 76, 0.15);
    border-radius: var(--radius-md);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    transition: var(--transition);
}

.stat-card:hover {
    border-color: rgba(201, 168, 76, 0.35);
    background: rgba(17, 29, 49, 0.95);
    transform: translateX(-4px);
    box-shadow: var(--shadow-gold);
}

.stat-icon {
    flex-shrink: 0;
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(201, 168, 76, 0.1);
    border-radius: var(--radius-sm);
    border: 1px solid rgba(201, 168, 76, 0.2);
}

.stat-number {
    font-family: var(--font-heading);
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--gold);
    line-height: 1;
}

.stat-label {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-top: 4px;
}

/* ===== Hero Scroll ===== */
.hero-scroll {
    position: absolute;
    bottom: 32px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.8rem;
    color: var(--text-muted);
    letter-spacing: 0.1em;
    text-transform: uppercase;
    animation: float 2s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateX(-50%) translateY(0); }
    50% { transform: translateX(-50%) translateY(6px); }
}

/* ===== Section Styles ===== */
section {
    padding: 100px 0;
}

.section-header {
    max-width: 680px;
    margin-bottom: 64px;
}

.section-header.center {
    margin-left: auto;
    margin-right: auto;
    text-align: center;
}

.section-tag {
    display: inline-block;
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--gold);
    margin-bottom: 16px;
    padding: 6px 14px;
    background: rgba(201, 168, 76, 0.1);
    border: 1px solid rgba(201, 168, 76, 0.2);
    border-radius: 100px;
}

.section-title {
    font-size: clamp(2rem, 4vw, 3rem);
    margin-bottom: 20px;
    letter-spacing: -0.02em;
}

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

/* ===== Services Section ===== */
.services {
    background: var(--bg-secondary);
    position: relative;
}

.services::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--gold), transparent);
    opacity: 0.3;
}

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

.service-card {
    position: relative;
    padding: 40px 32px;
    background: var(--bg-card);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: var(--radius-lg);
    transition: var(--transition);
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--gold), var(--teal-light));
    opacity: 0;
    transition: var(--transition);
}

.service-card:hover {
    border-color: rgba(201, 168, 76, 0.2);
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.service-card:hover::before {
    opacity: 1;
}

.service-icon {
    width: 72px;
    height: 72px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(201, 168, 76, 0.08);
    border: 1px solid rgba(201, 168, 76, 0.2);
    border-radius: var(--radius-md);
    margin-bottom: 24px;
}

.service-title {
    font-size: 1.35rem;
    margin-bottom: 12px;
}

.service-description {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.7;
    margin-bottom: 24px;
}

.service-features {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.service-features li {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.service-features li::before {
    content: '';
    width: 6px;
    height: 6px;
    background: var(--gold);
    border-radius: 50%;
    flex-shrink: 0;
}

/* ===== About Section ===== */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.about-image-wrapper {
    position: relative;
}

.about-image-wrapper img {
    width: 100%;
    height: 500px;
    object-fit: cover;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
}

.about-image-accent {
    position: absolute;
    bottom: -20px;
    right: -20px;
    width: 200px;
    height: 200px;
    border: 2px solid var(--gold);
    border-radius: var(--radius-lg);
    opacity: 0.3;
    z-index: -1;
}

.about-floating-card {
    position: absolute;
    bottom: 40px;
    left: -30px;
    padding: 24px 32px;
    background: var(--bg-card);
    border: 1px solid rgba(201, 168, 76, 0.25);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
}

.floating-card-number {
    font-family: var(--font-heading);
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--gold);
    line-height: 1;
}

.floating-card-text {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-top: 4px;
}

.about-content {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.about-text {
    color: var(--text-secondary);
    font-size: 1.05rem;
    line-height: 1.8;
}

.about-stats {
    display: flex;
    align-items: center;
    gap: 32px;
    padding: 32px 0;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.about-stat-number {
    font-family: var(--font-heading);
    font-size: 2rem;
    font-weight: 700;
    color: var(--gold);
    line-height: 1;
}

.about-stat-label {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-top: 6px;
}

.about-stat-divider {
    width: 1px;
    height: 48px;
    background: rgba(255, 255, 255, 0.1);
}

/* ===== Parts Section ===== */
.parts {
    background: var(--bg-primary);
}

.parts-categories {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    margin-bottom: 64px;
}

.parts-card {
    display: grid;
    grid-template-columns: 1fr 1fr;
    background: var(--bg-card);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: var(--transition);
}

.parts-card:hover {
    border-color: rgba(201, 168, 76, 0.2);
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.parts-card-image {
    position: relative;
    overflow: hidden;
    height: 100%;
    min-height: 220px;
}

.parts-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition-slow);
}

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

.parts-card-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(7, 14, 26, 0.6), transparent);
}

.parts-card-tag {
    position: absolute;
    top: 16px;
    left: 16px;
    padding: 4px 12px;
    background: var(--gold);
    color: var(--bg-primary);
    font-size: 0.75rem;
    font-weight: 700;
    border-radius: 100px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.parts-card-content {
    padding: 28px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 12px;
}

.parts-card-content h3 {
    font-size: 1.25rem;
}

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

.parts-card-link {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--gold);
    transition: var(--transition);
}

.parts-card-link:hover {
    color: var(--gold-light);
    letter-spacing: 0.02em;
}

.parts-cta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 32px;
    padding: 48px;
    background: var(--bg-card);
    border: 1px solid rgba(201, 168, 76, 0.15);
    border-radius: var(--radius-xl);
}

.parts-cta h3 {
    font-size: 1.5rem;
    margin-bottom: 8px;
}

.parts-cta p {
    color: var(--text-secondary);
    font-size: 1rem;
}

/* ===== Why Us Section ===== */
.why-us {
    background: var(--bg-secondary);
    position: relative;
}

.why-us::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--teal), transparent);
    opacity: 0.4;
}

.why-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
}

.why-item {
    padding: 32px 24px;
    background: var(--bg-card);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: var(--radius-lg);
    transition: var(--transition);
}

.why-item:hover {
    border-color: rgba(201, 168, 76, 0.2);
    transform: translateY(-4px);
}

.why-number {
    font-family: var(--font-heading);
    font-size: 3rem;
    font-weight: 700;
    color: rgba(201, 168, 76, 0.15);
    line-height: 1;
    margin-bottom: 16px;
}

.why-item h3 {
    font-size: 1.15rem;
    margin-bottom: 12px;
}

.why-item p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ===== Contact Section ===== */
.contact {
    background: var(--bg-primary);
    position: relative;
}

.contact::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--gold), transparent);
    opacity: 0.3;
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: start;
}

.contact-text {
    color: var(--text-secondary);
    font-size: 1.05rem;
    line-height: 1.8;
    margin-bottom: 40px;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 24px;
    margin-bottom: 32px;
}

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

.contact-detail-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(201, 168, 76, 0.08);
    border: 1px solid rgba(201, 168, 76, 0.2);
    border-radius: var(--radius-sm);
    flex-shrink: 0;
}

.contact-detail-label {
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-muted);
    margin-bottom: 4px;
}

.contact-detail-value {
    font-size: 1rem;
    color: var(--text-primary);
    line-height: 1.6;
}

.contact-detail-value a {
    color: var(--gold);
    transition: var(--transition);
}

.contact-detail-value a:hover {
    color: var(--gold-light);
}

.contact-map {
    border-radius: var(--radius-md);
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.06);
}

/* ===== Contact Form ===== */
.contact-form-card {
    padding: 40px;
    background: var(--bg-card);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: var(--radius-xl);
}

.form-title {
    font-size: 1.5rem;
    margin-bottom: 8px;
}

.form-subtitle {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-bottom: 32px;
}

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

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-bottom: 20px;
}

.form-group label {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-secondary);
}

.form-group input,
.form-group textarea {
    padding: 12px 16px;
    background: var(--bg-primary);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-family: var(--font-body);
    font-size: 0.95rem;
    transition: var(--transition);
    outline: none;
}

.form-group input:focus,
.form-group textarea:focus {
    border-color: var(--gold);
    box-shadow: 0 0 0 3px rgba(201, 168, 76, 0.1);
}

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

.form-group textarea {
    resize: vertical;
    min-height: 100px;
}

.form-success {
    display: none;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 48px 24px;
    text-align: center;
    gap: 16px;
}

.form-success.show {
    display: flex;
}

.success-icon {
    width: 80px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(201, 168, 76, 0.1);
    border: 2px solid rgba(201, 168, 76, 0.3);
    border-radius: 50%;
}

.form-success h4 {
    font-size: 1.35rem;
}

.form-success p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* ===== Footer ===== */
.footer {
    background: var(--bg-secondary);
    padding: 80px 0 0;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 48px;
    padding-bottom: 60px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-family: var(--font-heading);
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 16px;
}

.footer-desc {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.7;
    max-width: 300px;
}

.footer-links h4 {
    font-family: var(--font-body);
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-primary);
    margin-bottom: 20px;
}

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

.footer-links a {
    font-size: 0.9rem;
    color: var(--text-secondary);
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--gold);
    padding-left: 4px;
}

.footer-contact h4 {
    font-family: var(--font-body);
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-primary);
    margin-bottom: 16px;
}

.footer-contact p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.8;
}

.footer-contact a {
    color: var(--gold);
    transition: var(--transition);
}

.footer-contact a:hover {
    color: var(--gold-light);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    padding: 24px 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 16px;
}

.footer-bottom p {
    font-size: 0.85rem;
    color: var(--text-muted);
}

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

.footer-bottom a:hover {
    color: var(--gold-light);
}

/* ===== Scroll Animations ===== */
[data-aos] {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

[data-aos].aos-visible {
    opacity: 1;
    transform: translateY(0);
}

[data-aos].aos-visible[data-delay="100"] {
    transition-delay: 0.1s;
}

[data-aos].aos-visible[data-delay="200"] {
    transition-delay: 0.2s;
}

[data-aos].aos-visible[data-delay="300"] {
    transition-delay: 0.3s;
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
    .hero-container {
        grid-template-columns: 1fr;
        gap: 48px;
    }
    
    .hero-cards {
        flex-direction: row;
        flex-wrap: wrap;
    }
    
    .stat-card {
        flex: 1;
        min-width: 200px;
    }
    
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .about-grid {
        grid-template-columns: 1fr;
        gap: 48px;
    }
    
    .why-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 320px;
        height: 100vh;
        background: var(--bg-secondary);
        flex-direction: column;
        align-items: flex-start;
        padding: 100px 32px 32px;
        gap: 8px;
        transition: var(--transition);
        border-left: 1px solid rgba(255, 255, 255, 0.06);
    }
    
    .nav-menu.open {
        right: 0;
    }
    
    .nav-link {
        width: 100%;
        padding: 12px 16px;
    }
    
    .nav-cta {
        margin-left: 0;
        margin-top: 16px;
        text-align: center;
        width: 100%;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .hero {
        min-height: auto;
        padding-top: 100px;
    }
    
    .hero-container {
        padding: 100px 24px 80px;
    }
    
    .hero-title {
        font-size: 2.25rem;
    }
    
    .hero-cards {
        flex-direction: column;
    }
    
    .stat-card {
        min-width: auto;
    }
    
    .hero-scroll {
        display: none;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    .parts-categories {
        grid-template-columns: 1fr;
    }
    
    .parts-card {
        grid-template-columns: 1fr;
    }
    
    .parts-card-image {
        min-height: 180px;
    }
    
    .parts-cta {
        flex-direction: column;
        text-align: center;
        padding: 32px 24px;
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 48px;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .why-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }
    
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
    
    section {
        padding: 72px 0;
    }
    
    .about-floating-card {
        left: 10px;
        bottom: 20px;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 1.875rem;
    }
    
    .hero-actions {
        flex-direction: column;
    }
    
    .hero-actions .btn {
        width: 100%;
        justify-content: center;
    }
    
    .section-title {
        font-size: 1.75rem;
    }
    
    .contact-form-card {
        padding: 24px;
    }
}

/* Mobile menu overlay */
.nav-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    z-index: 998;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}

.nav-overlay.show {
    opacity: 1;
    visibility: visible;
}