* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    line-height: 1.7;
    color: #e0e0e0;
    background: linear-gradient(135deg, #0a1a1a 0%, #1a2a2a 30%, #0a1f1f 70%, #1a2f2f 100%);
    min-height: 100vh;
    font-weight: 400;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Header */
.oa-header {
    position: sticky;
    top: 0;
    background: rgba(26, 42, 42, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(0, 212, 255, 0.3);
    z-index: 1000;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
    transition: all 0.3s ease;
}

.oa-header.oa-scrolled {
    background: rgba(26, 26, 26, 0.98);
    box-shadow: 0 2px 20px rgba(102, 126, 234, 0.1);
}
header {
    position: sticky;
    top: 0;
    background: rgba(26, 42, 42, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(0, 212, 255, 0.3);
    z-index: 1000;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
    transition: all 0.3s ease;
}

header.scrolled {
    background: rgba(26, 26, 26, 0.98);
    box-shadow: 0 2px 20px rgba(102, 126, 234, 0.1);
}

.oa-header-content {
    max-width: 1400px;
    margin: 0 auto;
    padding: 20px 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.oa-logo {
    font-size: 28px;
    font-weight: 700;
    background: linear-gradient(135deg, #00d4ff 0%, #00ff88 50%, #0b5a7a 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-decoration: none;
    letter-spacing: -0.5px;
    position: relative;
}

.oa-logo::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, #00d4ff, #00ff88, #0b5a7a);
    border-radius: 2px;
}

nav ul {
    display: flex;
    list-style: none;
    gap: 40px;
    align-items: center;
}

nav a {
    text-decoration: none;
    color: #b0b0b0;
    font-weight: 600;
    font-size: 15px;
    transition: all 0.3s ease;
    position: relative;
    padding: 8px 16px;
    border-radius: 8px;
    letter-spacing: 0.5px;
}

nav a:hover {
    color: #ffffff;
    background: rgba(0, 212, 255, 0.15);
    transform: translateY(-2px);
}

nav a::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, #00d4ff, #00ff88);
    transition: all 0.3s ease;
    border-radius: 1px;
    transform: translateX(-50%);
}

nav a:hover::before {
    width: 80%;
}

/* Dropdown Menu */
.oa-nav-dropdown {
    position: relative;
}

.oa-nav-dropdown > a::after {
    content: '▾';
    margin-left: 8px;
    font-size: 12px;
    transition: transform 0.3s ease;
    color: #b0b0b0;
}

.oa-nav-dropdown:hover > a::after {
    transform: rotate(180deg);
    color: #ffffff;
}

.oa-dropdown-content {
    display: none;
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(26, 47, 47, 0.95);
    backdrop-filter: blur(20px);
    box-shadow: 0 8px 32px rgba(0,0,0,0.5);
    min-width: 220px;
    z-index: 1001;
    border-radius: 12px;
    padding: 16px 0;
    border: 1px solid rgba(0, 212, 255, 0.3);
    opacity: 0;
    visibility: hidden;
    transform: translateX(-50%) translateY(0);
    transition: all 0.3s ease;
}

.oa-nav-dropdown:hover .oa-dropdown-content,
.oa-dropdown-content:hover {
    display: block;
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}

.oa-dropdown-content a {
    display: block;
    padding: 12px 24px;
    color: #b0b0b0;
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.3s ease;
    border-left: 3px solid transparent;
}

.oa-dropdown-content a:hover {
    background: rgba(0, 212, 255, 0.15);
    color: #ffffff;
    border-left-color: #00d4ff;
    padding-left: 28px;
}

/* Hero Section */
.oa-hero {
    position: relative;
    height: 85vh;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    overflow: hidden;
}

.oa-hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(0, 0, 0, 0.7) 0%, rgba(0, 0, 0, 0.5) 50%, rgba(26, 26, 26, 0.6) 100%);
    z-index: 1;
}

.oa-hero::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at center, transparent 40%, rgba(0, 212, 255, 0.12) 100%);
    z-index: 1;
}

.oa-hero-content {
    position: relative;
    z-index: 2;
    max-width: 700px;
    padding: 0 30px;
}

.oa-hero h1 {
    font-size: 56px;
    font-weight: 800;
    margin-bottom: 20px;
    background: linear-gradient(135deg, #ffffff 0%, #e0e0e0 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.1;
    letter-spacing: -1px;
}

.oa-hero .oa-subtitle {
    font-size: 24px;
    margin-bottom: 32px;
    opacity: 0.9;
    font-weight: 500;
    color: #b0b0b0;
    letter-spacing: 0.5px;
}

.oa-hero p {
    font-size: 18px;
    line-height: 1.8;
    opacity: 0.9;
    color: #cccccc;
    font-weight: 400;
}

/* Content Container */
.oa-content-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Feature Sections */
.oa-feature-section {
    padding: 120px 0;
    position: relative;
}

.oa-feature-section::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 2px;
    height: 80%;
    background: linear-gradient(to bottom, transparent 0%, rgba(0, 212, 255, 0.4) 20%, rgba(0, 255, 136, 0.4) 80%, transparent 100%);
    opacity: 0.6;
    border-radius: 1px;
}

.oa-feature-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.oa-feature-text h3 {
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 20px;
    color: #ffffff;
    letter-spacing: -0.5px;
    line-height: 1.2;
}

.oa-feature-text p {
    font-size: 18px;
    line-height: 1.8;
    color: #cccccc;
    font-weight: 400;
}

.oa-feature-image img {
    width: 100%;
    height: 400px;
    object-fit: cover;
}

/* Split Feature */
.oa-split-feature {
    padding: 80px 0;
}

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

.oa-split-image img {
    width: 100%;
    height: 500px;
    object-fit: cover;
}

.oa-split-text h2 {
    font-size: 32px;
    font-weight: 600;
    margin-bottom: 24px;
    color: #e0e0e0;
}

.oa-split-text p {
    font-size: 16px;
    line-height: 1.7;
    color: #b0b0b0;
    max-width: 400px;
}

/* Benefits Section */
.oa-benefits-section {
    padding: 120px 0;
    text-align: center;
    position: relative;
}

.oa-benefits-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 4px;
    background: linear-gradient(90deg, #667eea, #764ba2);
    border-radius: 2px;
}

.oa-benefits-section h2 {
    font-size: 48px;
    font-weight: 700;
    margin-bottom: 60px;
    color: #ffffff;
    letter-spacing: -1px;
    margin-top: 40px;
}

.oa-benefits-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 60px;
    max-width: 1200px;
    margin: 0 auto;
}

.oa-benefit-item {
    text-align: left;
    padding: 40px 30px;
    background: rgba(42, 42, 42, 0.6);
    backdrop-filter: blur(10px);
    border-radius: 16px;
    border: 1px solid rgba(102, 126, 234, 0.1);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.oa-benefit-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, #667eea, #764ba2);
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.oa-benefit-item:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
    border-color: rgba(102, 126, 234, 0.3);
}

.oa-benefit-item:hover::before {
    transform: scaleX(1);
}

.oa-benefit-item h3 {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 16px;
    color: #ffffff;
    letter-spacing: -0.3px;
}

.oa-benefit-item p {
    font-size: 16px;
    line-height: 1.7;
    color: #b0b0b0;
    font-weight: 400;
}

/* Image Gallery */
.oa-gallery-section {
    padding: 120px 0;
    background: linear-gradient(135deg, rgba(42, 42, 42, 0.3) 0%, rgba(26, 26, 26, 0.3) 100%);
}

.oa-gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    max-width: 1400px;
    margin: 0 auto;
}

.oa-gallery-grid img {
    width: 100%;
    height: 280px;
    object-fit: cover;
    border-radius: 16px;
    transition: all 0.4s ease;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3);
}

.oa-gallery-grid img:hover {
    transform: scale(1.05);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
}

/* Testimonials */
.oa-testimonials-section {
    padding: 120px 0;
    text-align: center;
    position: relative;
}

.oa-testimonials-section::before {
    content: '';
    position: absolute;
    top: 60px;
    left: 50%;
    transform: translateX(-50%);
    width: 120px;
    height: 4px;
    background: linear-gradient(90deg, #764ba2, #667eea);
    border-radius: 2px;
}

.oa-testimonials-section h2 {
    font-size: 44px;
    font-weight: 700;
    margin-bottom: 80px;
    color: #ffffff;
    letter-spacing: -0.8px;
    margin-top: 20px;
}

.oa-testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 40px;
    max-width: 1400px;
    margin: 0 auto;
}

.oa-testimonial-card {
    background: rgba(42, 42, 42, 0.8);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(102, 126, 234, 0.2);
    padding: 40px;
    border-radius: 20px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
    transition: all 0.4s ease;
    position: relative;
    overflow: hidden;
}

.oa-testimonial-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, #667eea, #764ba2);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.oa-testimonial-card:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: 0 20px 60px rgba(102, 126, 234, 0.2);
    border-color: rgba(102, 126, 234, 0.4);
}

.oa-testimonial-card:hover::before {
    opacity: 1;
}

.oa-testimonial-stars {
    display: flex;
    justify-content: center;
    margin-bottom: 16px;
}

.oa-testimonial-stars span {
    color: #ffd700;
    font-size: 16px;
}

.oa-testimonial-quote {
    font-size: 14px;
    line-height: 1.6;
    color: #b0b0b0;
    margin-bottom: 16px;
    font-style: italic;
}

.oa-testimonial-author {
    font-size: 14px;
    font-weight: 600;
    color: #e0e0e0;
}

/* Footer */
footer {
    background: linear-gradient(135deg, #1a1a1a 0%, #2a2a2a 100%);
    border-top: 1px solid rgba(102, 126, 234, 0.2);
    padding: 80px 0 40px 0;
    position: relative;
}

footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, #667eea, #764ba2);
}

.oa-footer-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.oa-footer-nav {
    display: flex;
    gap: 32px;
    margin-bottom: 24px;
}

.oa-footer-nav a {
    text-decoration: none;
    color: #b0b0b0;
    font-size: 14px;
    transition: text-decoration 0.3s ease;
}

.oa-footer-nav a:hover {
    text-decoration: underline;
}

.oa-footer-legal {
    display: flex;
    gap: 24px;
    margin-bottom: 24px;
}

.oa-footer-legal a {
    text-decoration: none;
    color: #b0b0b0;
    font-size: 12px;
}

.oa-footer-disclaimer {
    font-size: 12px;
    line-height: 1.5;
    color: #b0b0b0;
    margin-bottom: 24px;
}

.oa-copyright {
    font-size: 12px;
    color: #808080;
    text-align: center;
}

/* Burger Menu */
.oa-burger-menu {
    display: none;
    flex-direction: column;
    cursor: pointer;
    padding: 8px;
    margin-left: auto;
}

.oa-burger-line {
    width: 24px;
    height: 2px;
    background: #e0e0e0;
    margin: 3px 0;
    transition: 0.3s;
}

.oa-mobile-menu {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background: #2a2a2a;
    z-index: 1000;
    padding-top: 80px;
}

.oa-mobile-menu.open {
    display: block;
}

.oa-mobile-menu ul {
    list-style: none;
    padding: 0 20px;
}

.oa-mobile-menu li {
    margin-bottom: 16px;
}

.oa-mobile-menu a {
    display: block;
    padding: 12px 0;
    color: #b0b0b0;
    text-decoration: none;
    font-size: 16px;
    font-weight: 500;
    border-bottom: 1px solid #404040;
}


.oa-menu-close {
    position: absolute;
    top: 20px;
    right: 20px;
    font-size: 24px;
    cursor: pointer;
    color: #b0b0b0;
}

/* Responsive */
@media (max-width: 1024px) {
    .oa-hero h1 {
        font-size: 48px;
    }

    .oa-hero .oa-subtitle {
        font-size: 20px;
    }

    .oa-benefits-section h2 {
        font-size: 40px;
    }

    .oa-testimonials-section h2 {
        font-size: 36px;
    }
}

@media (max-width: 768px) {
    .oa-header-content {
        padding: 16px 20px;
    }

    .oa-logo {
        font-size: 24px;
    }

    nav {
        display: none;
    }

    .oa-burger-menu {
        display: flex;
    }

    .oa-hero {
        height: 70vh;
    }

    .oa-hero h1 {
        font-size: 36px;
    }

    .oa-hero .oa-subtitle {
        font-size: 18px;
    }

    .oa-hero p {
        font-size: 16px;
    }

    .oa-feature-section {
        padding: 80px 0;
    }

    .oa-feature-grid,
    .oa-split-grid {
        grid-template-columns: 1fr;
        gap: 50px;
    }

    .oa-feature-text h3 {
        font-size: 28px;
    }

    .oa-benefits-section {
        padding: 80px 0;
    }

    .oa-benefits-section h2 {
        font-size: 32px;
        margin-bottom: 40px;
    }

    .oa-benefits-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .oa-benefit-item {
        padding: 30px 20px;
    }

    .oa-gallery-section {
        padding: 80px 0;
    }

    .oa-gallery-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .oa-gallery-grid img {
        height: 240px;
    }

    .oa-testimonials-section {
        padding: 80px 0;
    }

    .oa-testimonials-section h2 {
        font-size: 32px;
        margin-bottom: 40px;
    }

    .oa-testimonials-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .oa-footer-nav {
        flex-direction: column;
        gap: 20px;
    }

    .oa-footer-legal {
        flex-direction: column;
        gap: 16px;
    }

    .oa-footer-disclaimer {
        font-size: 14px;
    }
}

@media (max-width: 480px) {
    .oa-header-content {
        padding: 12px 16px;
    }

    .oa-hero h1 {
        font-size: 28px;
    }

    .oa-hero .oa-subtitle {
        font-size: 16px;
    }

    .oa-hero-content {
        padding: 0 16px;
    }

    .oa-feature-section {
        padding: 60px 0;
    }

    .oa-benefits-section {
        padding: 60px 0;
    }

    .oa-testimonials-section {
        padding: 60px 0;
    }

    .oa-gallery-section {
        padding: 60px 0;
    }
}

/* Animations */
.oa-feature-section,
.oa-benefit-item,
.oa-testimonial-card {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease;
}

.oa-feature-section.oa-animate-in,
.oa-benefit-item.oa-animate-in,
.oa-testimonial-card.oa-animate-in {
    opacity: 1;
    transform: translateY(0);
}

/* Loading animation */
body {
    opacity: 0;
    transition: opacity 0.3s ease;
}

body.oa-loaded {
    opacity: 1;
}

/* Custom scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #1a1a1a;
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(135deg, #667eea, #764ba2);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(135deg, #5a67d8, #9f7aea);
}