:root {
    --bg-dark: #0a0a0f;
    --bg-secondary: #12121a;
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --accent: #22d3ee;
    --gold: #fbbf24;
    --text-primary: #ffffff;
    --text-secondary: #a1a1aa;
    --glass-bg: rgba(255, 255, 255, 0.03);
    --glass-border: rgba(255, 255, 255, 0.08);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-dark);
    color: var(--text-primary);
    overflow-x: hidden;
    line-height: 1.6;
}

/* Navigation */
nav {
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(10, 10, 15, 0.8);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--glass-border);
    transition: all 0.3s ease;
}

nav.scrolled {
    background: rgba(10, 10, 15, 0.95);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 1.5rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-family: 'Montserrat', sans-serif;
    font-size: 1.8rem;
    font-weight: 900;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    letter-spacing: -1px;
}

.nav-links {
    display: flex;
    gap: 2.5rem;
    list-style: none;
}

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    transition: width 0.3s ease;
}

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

.nav-links a:hover::after {
    width: 100%;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    padding: 0 2rem;
}

.hero-bg {
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
}

.gradient-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(120px);
    opacity: 0.3;
    animation: float 20s infinite ease-in-out;
}

.orb-1 {
    width: 600px;
    height: 600px;
    background: var(--primary);
    top: -200px;
    right: -100px;
    animation-delay: 0s;
}

.orb-2 {
    width: 500px;
    height: 500px;
    background: var(--accent);
    bottom: -150px;
    left: -150px;
    animation-delay: -7s;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(50px, -50px) scale(1.1); }
    66% { transform: translate(-30px, 30px) scale(0.9); }
}

.hero-content {
    max-width: 1400px;
    text-align: center;
    z-index: 10;
    position: relative;
}

.hero h1 {
    font-family: 'Montserrat', sans-serif;
    font-size: clamp(3rem, 8vw, 7rem);
    font-weight: 900;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    letter-spacing: -3px;
}

.gradient-text {
    background: linear-gradient(135deg, var(--primary), var(--accent), var(--gold));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    animation: gradient-shift 5s ease infinite;
    background-size: 200% 200%;
}

@keyframes gradient-shift {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

.hero p {
    font-size: clamp(1.1rem, 2vw, 1.4rem);
    color: var(--text-secondary);
    margin-bottom: 3rem;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.cta-buttons {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    flex-wrap: wrap;
}

.btn {
    padding: 1rem 2.5rem;
    font-size: 1rem;
    font-weight: 600;
    border-radius: 12px;
    text-decoration: none;
    transition: all 0.3s ease;
    cursor: pointer;
    border: none;
    display: inline-block;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: white;
    box-shadow: 0 10px 30px rgba(99, 102, 241, 0.3);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 40px rgba(99, 102, 241, 0.4);
}

.btn-secondary {
    background: var(--glass-bg);
    color: white;
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(10px);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.08);
    transform: translateY(-3px);
}

/* Section Styles */
section {
    padding: 8rem 2rem;
    position: relative;
}

.section-header {
    text-align: center;
    margin-bottom: 5rem;
}

.section-label {
    color: var(--primary);
    font-size: 0.9rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 3px;
    margin-bottom: 1rem;
}

.section-title {
    font-family: 'Montserrat', sans-serif;
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 900;
    margin-bottom: 1.5rem;
    letter-spacing: -2px;
}

.section-description {
    font-size: 1.2rem;
    color: var(--text-secondary);
    max-width: 700px;
    margin: 0 auto;
}

/* Services Grid */
.services-grid {
    max-width: 1400px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.service-card {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    padding: 3rem 2rem;
    backdrop-filter: blur(10px);
    transition: all 0.4s ease;
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    opacity: 0;
    transition: opacity 0.4s ease;
}

.service-card:hover {
    transform: translateY(-10px);
    border-color: var(--primary);
    box-shadow: 0 20px 60px rgba(99, 102, 241, 0.2);
}

.service-card:hover::before {
    opacity: 0.05;
}

.service-icon {
    font-size: 3rem;
    margin-bottom: 1.5rem;
    display: inline-block;
}

.service-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    font-weight: 700;
}

.service-card p {
    color: var(--text-secondary);
    line-height: 1.8;
}

/* References Grid */
.references-grid {
    max-width: 1400px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
}

.reference-card {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    padding: 2.5rem 2rem;
    backdrop-filter: blur(10px);
    transition: all 0.4s ease;
    text-align: center;
}

.reference-card:hover {
    transform: translateY(-8px);
    border-color: var(--primary);
    box-shadow: 0 20px 60px rgba(99, 102, 241, 0.15);
}

.reference-logo {
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
    display: inline-block;
    filter: grayscale(0.3);
    transition: all 0.3s ease;
}

.reference-card:hover .reference-logo {
    filter: grayscale(0);
    transform: scale(1.1);
}

.reference-card h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    font-weight: 700;
}

.reference-category {
    color: var(--accent);
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 1rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.reference-card p:last-child {
    color: var(--text-secondary);
    line-height: 1.7;
    font-size: 0.95rem;
}

/* Contact Section */
.contact-container {
    max-width: 800px;
    margin: 0 auto;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 30px;
    padding: 4rem 3rem;
    backdrop-filter: blur(10px);
}

.contact-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

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

.contact-item-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.contact-item h3 {
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.contact-item a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.3s ease;
}

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

/* Footer */
footer {
    background: var(--bg-secondary);
    padding: 3rem 2rem;
    text-align: center;
    border-top: 1px solid var(--glass-border);
}

footer p {
    color: var(--text-secondary);
}

/* Animations */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 0.8s ease forwards;
}

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

.fade-in:nth-child(1) { animation-delay: 0.1s; }
.fade-in:nth-child(2) { animation-delay: 0.2s; }
.fade-in:nth-child(3) { animation-delay: 0.3s; }
.fade-in:nth-child(4) { animation-delay: 0.4s; }

/* Mobile Menu */
.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    color: white;
    font-size: 1.5rem;
    cursor: pointer;
    z-index: 1001;
}

.nav-links.mobile-active {
    display: flex;
}

/* Responsive */
@media (max-width: 968px) {
    .nav-links {
        position: fixed;
        top: 0;
        right: -100%;
        width: 70%;
        max-width: 300px;
        height: 100vh;
        background: rgba(10, 10, 15, 0.98);
        backdrop-filter: blur(20px);
        flex-direction: column;
        padding: 6rem 2rem 2rem;
        gap: 2rem;
        transition: right 0.4s ease;
        box-shadow: -5px 0 30px rgba(0, 0, 0, 0.5);
        border-left: 1px solid var(--glass-border);
    }

    .nav-links.mobile-active {
        right: 0;
    }

    .nav-links a {
        font-size: 1.2rem;
        padding: 0.5rem 0;
        border-bottom: 1px solid var(--glass-border);
    }

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

    .logo {
        font-size: 1.5rem;
    }
}

@media (max-width: 768px) {
    .nav-container {
        padding: 1rem 1.5rem;
    }

    .hero {
        min-height: 85vh;
        padding: 5rem 1.5rem 2rem;
    }

    .hero h1 {
        font-size: clamp(2.2rem, 10vw, 3rem);
        letter-spacing: -2px;
        margin-bottom: 0.8rem;
    }

    .hero p {
        font-size: 0.95rem;
        margin-bottom: 1.5rem;
        padding: 0 0.5rem;
        line-height: 1.5;
    }

    .cta-buttons {
        flex-direction: column;
        width: 100%;
        gap: 0.8rem;
    }

    .btn {
        width: 100%;
        max-width: 100%;
        padding: 0.9rem 2rem;
        font-size: 0.95rem;
    }

    section {
        padding: 3rem 1.5rem;
    }

    .section-label {
        font-size: 0.75rem;
        letter-spacing: 2px;
    }

    .section-title {
        font-size: clamp(2rem, 8vw, 2.5rem);
        letter-spacing: -1px;
        margin-bottom: 1rem;
    }

    .section-description {
        font-size: 1rem;
        padding: 0 0.5rem;
    }

    .section-header {
        margin-bottom: 2rem;
    }

    .section-label {
        margin-bottom: 0.5rem;
    }

    .section-description {
        margin-bottom: 0;
    }

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

    .service-card {
        padding: 1.5rem 1.2rem;
    }

    .service-icon {
        font-size: 2.2rem;
        margin-bottom: 0.8rem;
    }

    .service-card h3 {
        font-size: 1.2rem;
        margin-bottom: 0.5rem;
    }

    .service-card p {
        font-size: 0.9rem;
        line-height: 1.5;
    }

    .references-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .reference-card {
        padding: 1.5rem 1.2rem;
    }

    .reference-logo {
        font-size: 2.5rem;
        margin-bottom: 1rem;
    }

    .reference-card h3 {
        font-size: 1.2rem;
        margin-bottom: 0.3rem;
    }

    .reference-category {
        font-size: 0.75rem;
        margin-bottom: 0.5rem;
    }

    .reference-card p:last-child {
        font-size: 0.85rem;
        line-height: 1.5;
    }

    .contact-container {
        padding: 2rem 1.5rem;
        border-radius: 20px;
    }

    .contact-info {
        grid-template-columns: 1fr;
        gap: 1.2rem;
        margin-bottom: 1.5rem;
    }

    .contact-item-icon {
        font-size: 1.8rem;
        margin-bottom: 0.5rem;
    }

    .contact-item h3 {
        font-size: 1rem;
        margin-bottom: 0.3rem;
    }

    .contact-item a,
    .contact-item p {
        font-size: 0.9rem;
    }

    footer {
        padding: 2rem 1.5rem;
        font-size: 0.9rem;
    }

    .gradient-orb {
        filter: blur(80px);
    }

    .orb-1 {
        width: 400px;
        height: 400px;
        top: -150px;
        right: -150px;
    }

    .orb-2 {
        width: 350px;
        height: 350px;
        bottom: -100px;
        left: -100px;
    }
}

@media (max-width: 480px) {
    .nav-container {
        padding: 0.8rem 1rem;
    }

    .logo {
        font-size: 1.3rem;
    }

    .hero {
        min-height: 80vh;
        padding: 4.5rem 1rem 1.5rem;
    }

    .hero h1 {
        font-size: 1.9rem;
        line-height: 1.2;
        margin-bottom: 0.6rem;
    }

    .hero p {
        font-size: 0.9rem;
        margin-bottom: 1.2rem;
        line-height: 1.4;
    }

    .btn {
        padding: 0.85rem 1.5rem;
        font-size: 0.9rem;
    }

    section {
        padding: 2.5rem 1rem;
    }

    .section-header {
        margin-bottom: 1.5rem;
    }

    .section-title {
        font-size: 1.7rem;
        margin-bottom: 0.8rem;
    }

    .section-description {
        font-size: 0.9rem;
        line-height: 1.5;
    }

    .service-card,
    .reference-card {
        padding: 1.3rem 1rem;
    }

    .service-icon {
        font-size: 2rem;
    }

    .service-card h3,
    .reference-card h3 {
        font-size: 1.1rem;
    }

    .contact-container {
        padding: 1.8rem 1.2rem;
    }

    .contact-info {
        gap: 1rem;
    }

    .contact-item-icon {
        font-size: 1.6rem;
    }

    .contact-item h3 {
        font-size: 0.95rem;
    }

    .contact-item a,
    .contact-item p {
        font-size: 0.85rem;
    }

    footer {
        padding: 1.5rem 1rem;
    }
}

/* Landscape mobile optimization */
@media (max-height: 600px) and (orientation: landscape) {
    .hero {
        min-height: auto;
        padding: 8rem 2rem 4rem;
    }

    .hero h1 {
        font-size: 2.5rem;
    }

    .hero p {
        margin-bottom: 1.5rem;
    }

    .section-header {
        margin-bottom: 2rem;
    }

    section {
        padding: 3rem 2rem;
    }
}

/* Scroll Progress Bar */
.scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    width: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    z-index: 9999;
    transition: width 0.1s ease;
}

/* Scroll to top button */
.scroll-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.5rem;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    box-shadow: 0 5px 20px rgba(99, 102, 241, 0.3);
    z-index: 999;
}

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

.scroll-top:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(99, 102, 241, 0.4);
}

@media (max-width: 768px) {
    .scroll-top {
        width: 45px;
        height: 45px;
        bottom: 1.5rem;
        right: 1.5rem;
        font-size: 1.3rem;
    }
}

/* Touch optimization */
@media (hover: none) and (pointer: coarse) {
    .btn,
    .service-card,
    .reference-card,
    .nav-links a {
        -webkit-tap-highlight-color: transparent;
    }

    .btn:active {
        transform: scale(0.98);
    }

    .service-card:active,
    .reference-card:active {
        transform: scale(0.98);
    }
}