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

:root {
    --primary-gradient: linear-gradient(135deg, #1e3a8a, #1e40af);
    --secondary-gradient: linear-gradient(135deg, #1e3a8a, #2563eb);
    --accent-gradient: linear-gradient(135deg, #0ea5e9, #06b6d4);
    --success: #10b981;
}

/* Light mode (default) */
:root {
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-tertiary: #f1f5f9;
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-muted: #64748b;
    --border-color: #e2e8f0;
    --surface: #ffffff;
    --surface-2: #f8fafc;
    --shadow-color: rgba(0, 0, 0, 0.1);
}

/* Dark mode */
[data-theme="dark"] {
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-tertiary: #334155;
    --text-primary: #ffffff;
    --text-secondary: #cbd5e1;
    --text-muted: #94a3b8;
    --border-color: #374151;
    --surface: #1e293b;
    --surface-2: #334155;
    --shadow-color: rgba(0, 0, 0, 0.3);
}

html {
    overflow-x: hidden;
    max-width: 100vw;
}

body {
    font-family: 'Inter', sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    overflow-x: hidden;
    max-width: 100vw;
    line-height: 1.6;
    transition: background-color 0.3s ease, color 0.3s ease;
}

/* Animated Background */
.animated-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    overflow: hidden;
}

.blob {
    position: absolute;
    border-radius: 50%;
    filter: blur(100px);
    mix-blend-mode: multiply;
    animation: blob 7s infinite;
}

[data-theme="dark"] .blob {
    mix-blend-mode: screen;
}

.blob-1 {
    top: 0;
    left: 0;
    width: 400px;
    height: 400px;
    background: linear-gradient(135deg, #1e40af, #3b82f6);
    opacity: 0.1;
}

.blob-2 {
    top: 50%;
    right: 0;
    width: 350px;
    height: 350px;
    background: linear-gradient(135deg, #1e3a8a, #2563eb);
    opacity: 0.1;
    animation-delay: 2s;
}

.blob-3 {
    bottom: 0;
    left: 50%;
    width: 300px;
    height: 300px;
    background: linear-gradient(135deg, #0ea5e9, #06b6d4);
    opacity: 0.1;
    animation-delay: 4s;
}

@keyframes blob {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(30px, -50px) scale(1.1); }
    66% { transform: translate(-20px, 20px) scale(0.9); }
}

/* Navigation */
nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    padding: 1rem 0;
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

nav.scrolled {
    background: var(--bg-primary);
    border-bottom-color: var(--border-color);
    box-shadow: 0 4px 6px var(--shadow-color);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.75rem;
    font-weight: 800;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    text-decoration: none;
    white-space: nowrap;
}

.nav-cta {
    display: flex;
    gap: 1rem;
    align-items: center;
}

.btn {
    padding: 0.75rem 1.5rem;
    border-radius: 12px;
    font-weight: 600;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.3s ease;
    cursor: pointer;
    border: none;
    font-size: 0.95rem;
}

.btn-primary {
    background: var(--primary-gradient);
    color: white;
    box-shadow: 0 10px 25px rgba(30, 64, 175, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 20px 40px rgba(30, 64, 175, 0.4);
}

.btn-outline {
    border: 2px solid var(--border-color);
    color: var(--text-primary);
    background: var(--surface);
    backdrop-filter: blur(10px);
}

.btn-outline:hover {
    border-color: rgba(30, 64, 175, 0.5);
    background: rgba(30, 64, 175, 0.1);
}

.theme-toggle {
    background: var(--surface-2);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s ease;
    color: var(--text-secondary);
}

.theme-toggle:hover {
    background: var(--surface);
    color: var(--text-primary);
    transform: scale(1.05);
}

/* Hero Section */
.hero {
    min-height: auto;
    display: flex;
    align-items: center;
    padding: 7rem 2rem 3rem;
    position: relative;
}

.hero-container {
    max-width: 1400px;
    margin: 0 auto;
    text-align: center;
}

.hero h1 {
    font-size: clamp(3rem, 8vw, 5rem);
    font-weight: 900;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    animation: fadeInUp 0.8s ease-out 0.2s both;
}

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

.hero p {
    font-size: 1.25rem;
    color: var(--text-secondary);
    max-width: 700px;
    margin: 0 auto 2rem;
    animation: fadeInUp 0.8s ease-out 0.4s both;
}

.hero-cta {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 0;
    animation: fadeInUp 0.8s ease-out 0.6s both;
}

/* Services Section */
.services {
    padding: 4rem 2rem;
    position: relative;
}

.services-container {
    max-width: 1200px;
    margin: 0 auto;
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-header h2 {
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 800;
    margin-bottom: 1rem;
}

.section-header p {
    font-size: 1.125rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.service-card {
    background: var(--surface);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 2rem;
    text-align: center;
    transition: all 0.3s ease;
    box-shadow: 0 4px 6px var(--shadow-color);
}

.service-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(30, 64, 175, 0.1);
}

.service-icon {
    width: 70px;
    height: 70px;
    margin: 0 auto 1.5rem;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.75rem;
    background: var(--primary-gradient);
    color: white;
}

.service-card:nth-child(2) .service-icon {
    background: linear-gradient(135deg, #10b981, #059669);
}

.service-card:nth-child(3) .service-icon {
    background: linear-gradient(135deg, #8b5cf6, #7c3aed);
}

.service-card h3 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
}

.service-card p {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Dark mode adjustments */
[data-theme="dark"] .gradient-text,
[data-theme="dark"] .section-header .gradient-text {
    background: linear-gradient(135deg, #3b82f6, #60a5fa);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

[data-theme="dark"] .logo {
    background: linear-gradient(135deg, #3b82f6, #60a5fa);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

[data-theme="dark"] .service-icon {
    filter: brightness(1.1);
}

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

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    text-align: center;
}

.footer-logo {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.5rem;
    font-weight: 800;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 1rem;
}

[data-theme="dark"] .footer-logo {
    background: linear-gradient(135deg, #3b82f6, #60a5fa);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.footer-description {
    color: var(--text-muted);
    margin-bottom: 1.5rem;
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

.footer-links a {
    color: var(--text-muted);
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-links a:hover {
    color: #1e40af;
}

[data-theme="dark"] .footer-links a:hover {
    color: #60a5fa;
}

.footer-bottom {
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-color);
    color: var(--text-muted);
    font-size: 0.875rem;
}

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

.animate-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease;
}

.animate-on-scroll.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-container {
        padding: 0 1rem;
    }

    .logo {
        font-size: 1.5rem;
    }

    .hero {
        padding: 6rem 1rem 3rem;
    }

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

    .hero p {
        font-size: 1rem;
    }

    .hero-cta {
        flex-direction: column;
        align-items: center;
    }

    .btn {
        width: 100%;
        max-width: 280px;
        justify-content: center;
    }

    .services {
        padding: 4rem 1rem;
    }

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

    .footer-links {
        flex-direction: column;
        gap: 1rem;
    }
}

@media (max-width: 480px) {
    .logo {
        font-size: 1.25rem;
    }

    .theme-toggle {
        width: 36px;
        height: 36px;
    }

    .hero h1 {
        font-size: 2rem;
    }
}