:root {
    --bg-dark: #0f172a;
    --bg-card: rgba(30, 41, 59, 0.6);
    --primary: #0ea5e9;
    --primary-glow: rgba(14, 165, 233, 0.4);
    --secondary: #6366f1;
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --border: rgba(255, 255, 255, 0.1);
    --glass-bg: rgba(255, 255, 255, 0.03);
    --font-heading: 'Plus Jakarta Sans', sans-serif;
    --font-body: 'Inter', sans-serif;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    background-color: var(--bg-dark);
    color: var(--text-main);
    line-height: 1.6;
    overflow-x: hidden;
    position: relative;
}

/* Floating Background Gradients */
.bg-gradient-1, .bg-gradient-2, .bg-gradient-3 {
    position: fixed;
    border-radius: 50%;
    filter: blur(100px);
    z-index: -1;
    opacity: 0.4;
    animation: float 20s infinite ease-in-out;
}

.bg-gradient-1 {
    width: 600px;
    height: 600px;
    background: var(--primary);
    top: -100px;
    left: -100px;
}

.bg-gradient-2 {
    width: 500px;
    height: 500px;
    background: var(--secondary);
    bottom: -100px;
    right: -100px;
    animation-delay: -5s;
}

.bg-gradient-3 {
    width: 400px;
    height: 400px;
    background: #8b5cf6;
    top: 40%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation-delay: -10s;
}

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Typography */
h1, h2, h3, h4 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
}

a {
    color: var(--primary);
    text-decoration: none;
    transition: color 0.3s;
}

a:hover {
    color: #38bdf8;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 14px 28px;
    border-radius: 12px;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    border: none;
    text-align: center;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    box-shadow: 0 4px 20px var(--primary-glow);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px var(--primary-glow);
    color: white;
}

.glow-btn {
    animation: glow 3s infinite alternate;
}

@keyframes glow {
    from { box-shadow: 0 4px 20px var(--primary-glow); }
    to { box-shadow: 0 4px 40px rgba(14, 165, 233, 0.7); }
}

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

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-main);
}

/* Navigation */
.glass-nav {
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(15, 23, 42, 0.7);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border);
    transition: all 0.3s;
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.logo {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--text-main);
}

.logo span {
    color: var(--primary);
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 32px;
}

.nav-links a {
    color: var(--text-muted);
    font-weight: 500;
    font-size: 0.95rem;
}

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

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    color: var(--text-main);
    font-size: 1.5rem;
    cursor: pointer;
}

/* Hero Section */
.hero-section {
    padding: 160px 0 100px;
    text-align: center;
    position: relative;
}

.hero-badge {
    display: inline-block;
    padding: 8px 16px;
    background: rgba(14, 165, 233, 0.1);
    border: 1px solid rgba(14, 165, 233, 0.3);
    border-radius: 50px;
    color: var(--primary);
    font-weight: 600;
    font-size: 0.9rem;
    margin-bottom: 24px;
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    margin-bottom: 24px;
    background: linear-gradient(to right, #fff, #94a3b8);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-subtitle {
    font-size: 1.2rem;
    color: var(--text-muted);
    max-width: 700px;
    margin: 0 auto 40px;
}

.hero-cta-group {
    display: flex;
    gap: 16px;
    justify-content: center;
    margin-bottom: 60px;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 24px;
    flex-wrap: wrap;
}

.stat-item {
    padding: 24px 32px;
    border-radius: 16px;
    text-align: center;
    min-width: 180px;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--primary);
    font-family: var(--font-heading);
}

.stat-suffix {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
}

.stat-label {
    display: block;
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-top: 8px;
}

/* Glass Card Utility */
.glass-card {
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    border: 1px solid var(--border);
    border-radius: 20px;
    padding: 32px;
    transition: transform 0.3s, box-shadow 0.3s;
}

.glass-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
    border-color: rgba(255, 255, 255, 0.2);
}

/* Sections */
.section {
    padding: 100px 0;
}

.alt-bg {
    background: rgba(0, 0, 0, 0.2);
}

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

.section-header h2 {
    font-size: 2.5rem;
    margin-bottom: 16px;
}

.section-header p {
    color: var(--text-muted);
    font-size: 1.1rem;
}

/* Services Grid */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 24px;
}

.service-card {
    position: relative;
    overflow: hidden;
}

.card-icon {
    font-size: 2.5rem;
    margin-bottom: 20px;
}

.service-card h3 {
    font-size: 1.3rem;
    margin-bottom: 12px;
}

.service-card p {
    color: var(--text-muted);
    font-size: 0.95rem;
    margin-bottom: 20px;
}

.feature-list {
    list-style: none;
    display: flex;
    gap: 12px;
    margin-bottom: 24px;
    flex-wrap: wrap;
}

.feature-list li {
    font-size: 0.85rem;
    background: rgba(14, 165, 233, 0.1);
    color: var(--primary);
    padding: 4px 12px;
    border-radius: 20px;
}

.card-link {
    font-weight: 600;
    color: var(--primary);
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

/* Timeline */
.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 24px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(to bottom, var(--primary), var(--secondary));
}

.timeline-item {
    display: flex;
    gap: 32px;
    margin-bottom: 40px;
    position: relative;
}

.timeline-dot {
    width: 50px;
    height: 50px;
    background: var(--bg-dark);
    border: 2px solid var(--primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    color: var(--primary);
    flex-shrink: 0;
    z-index: 2;
}

.timeline-content h3 {
    margin-bottom: 8px;
    color: var(--primary);
}

.timeline-content p {
    color: var(--text-muted);
    font-size: 0.95rem;
}

/* Portfolio CSS Abstract */
.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
}

.portfolio-card {
    position: relative;
    border-radius: 20px;
    overflow: hidden;
    height: 300px;
    cursor: pointer;
}

.css-abstract-1 {
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, #0f172a, #1e293b);
    position: relative;
}

.css-abstract-1::before {
    content: '';
    position: absolute;
    width: 150%;
    height: 150%;
    background: conic-gradient(from 0deg, transparent, var(--primary), transparent);
    animation: rotate 4s linear infinite;
    top: -25%;
    left: -25%;
}

.css-abstract-2 {
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 30% 30%, var(--secondary), var(--bg-dark));
}

.css-abstract-3 {
    width: 100%;
    height: 100%;
    background: repeating-linear-gradient(45deg, var(--bg-dark), var(--bg-dark) 10px, rgba(14, 165, 233, 0.1) 10px, rgba(14, 165, 233, 0.1) 20px);
}

@keyframes rotate {
    100% { transform: rotate(360deg); }
}

.portfolio-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 24px;
    background: linear-gradient(to top, rgba(15, 23, 42, 0.95), transparent);
    transform: translateY(20px);
    opacity: 0;
    transition: all 0.3s;
}

.portfolio-card:hover .portfolio-overlay {
    transform: translateY(0);
    opacity: 1;
}

/* Article Styling */
.article-container {
    max-width: 900px;
}

.premium-article {
    background: var(--glass-bg);
    backdrop-filter: blur(16px);
    border: 1px solid var(--border);
    border-radius: 24px;
    padding: 48px;
}

.article-category {
    color: var(--primary);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    font-size: 0.85rem;
}

.article-header h2 {
    font-size: 2.2rem;
    margin: 16px 0;
}

.article-meta {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-bottom: 32px;
    padding-bottom: 32px;
    border-bottom: 1px solid var(--border);
}

.article-content h3 {
    font-size: 1.5rem;
    margin: 40px 0 16px;
    color: var(--text-main);
}

.article-content p {
    color: var(--text-muted);
    margin-bottom: 20px;
    font-size: 1.05rem;
    line-height: 1.8;
}

.article-content a {
    color: var(--primary);
    text-decoration: underline;
    text-underline-offset: 4px;
}

.callout-box {
    padding: 24px;
    border-radius: 12px;
    margin: 32px 0;
    border-left: 4px solid;
}

.info-box {
    background: rgba(14, 165, 233, 0.1);
    border-color: var(--primary);
}

.warning-box {
    background: rgba(239, 68, 68, 0.1);
    border-color: #ef4444;
}

.comparison-table {
    width: 100%;
    border-collapse: collapse;
    margin: 32px 0;
    background: rgba(255, 255, 255, 0.02);
    border-radius: 12px;
    overflow: hidden;
}

.comparison-table caption {
    font-weight: 700;
    margin-bottom: 12px;
    font-size: 1.1rem;
}

.comparison-table th, .comparison-table td {
    padding: 16px;
    text-align: left;
    border-bottom: 1px solid var(--border);
}

.comparison-table th {
    background: rgba(14, 165, 233, 0.1);
    color: var(--primary);
    font-weight: 600;
}

.comparison-table td {
    color: var(--text-muted);
}

.checklist {
    list-style: none;
    margin: 24px 0;
}

.checklist li {
    position: relative;
    padding-left: 32px;
    margin-bottom: 16px;
    color: var(--text-muted);
}

.checklist li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--primary);
    font-weight: 700;
}

/* FAQ Accordion */
.faq-container {
    margin-top: 32px;
}

.faq-item {
    border-bottom: 1px solid var(--border);
}

.faq-question {
    width: 100%;
    text-align: left;
    padding: 20px 0;
    background: none;
    border: none;
    color: var(--text-main);
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-family: var(--font-heading);
}

.faq-question::after {
    content: '+';
    font-size: 1.5rem;
    color: var(--primary);
    transition: transform 0.3s;
}

.faq-item.active .faq-question::after {
    transform: rotate(45deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease-out;
}

.faq-answer p {
    padding-bottom: 20px;
    color: var(--text-muted);
}

/* Testimonials */
.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
}

.testimonial-header {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 20px;
}

.avatar {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    color: white;
}

.rating {
    color: #fbbf24;
    letter-spacing: 2px;
}

.testimonial-card p {
    color: var(--text-muted);
    font-style: italic;
    margin-bottom: 16px;
}

.location {
    font-size: 0.85rem;
    color: var(--text-muted);
    opacity: 0.7;
}

/* Contact Section */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
}

.info-item {
    display: flex;
    gap: 16px;
    margin-bottom: 24px;
}

.info-icon {
    font-size: 1.5rem;
    width: 40px;
    height: 40px;
    background: rgba(14, 165, 233, 0.1);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.info-item strong {
    display: block;
    margin-bottom: 4px;
    color: var(--text-main);
}

.info-item p, .info-item a {
    color: var(--text-muted);
    font-size: 0.95rem;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    font-size: 0.9rem;
}

.form-group input, .form-group textarea {
    width: 100%;
    padding: 14px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border);
    border-radius: 10px;
    color: var(--text-main);
    font-family: var(--font-body);
    font-size: 1rem;
    transition: border-color 0.3s;
}

.form-group input:focus, .form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
}

/* Footer */
.footer {
    background: rgba(0, 0, 0, 0.4);
    border-top: 1px solid var(--border);
    padding: 80px 0 30px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 40px;
    margin-bottom: 60px;
}

.footer-logo {
    display: inline-block;
    margin-bottom: 20px;
}

.footer-col p {
    color: var(--text-muted);
    font-size: 0.95rem;
    line-height: 1.7;
}

.footer-col h4 {
    margin-bottom: 24px;
    font-size: 1.1rem;
}

.footer-col ul {
    list-style: none;
}

.footer-col ul li {
    margin-bottom: 12px;
}

.footer-col ul li a {
    color: var(--text-muted);
    font-size: 0.95rem;
}

.footer-col ul li a:hover {
    color: var(--primary);
}

.social-icons {
    display: flex;
    gap: 12px;
    margin-top: 20px;
}

.social-icons a {
    width: 40px;
    height: 40px;
    background: var(--glass-bg);
    border: 1px solid var(--border);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-main);
    font-weight: 700;
    transition: all 0.3s;
}

.social-icons a:hover {
    background: var(--primary);
    border-color: var(--primary);
    color: white;
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid var(--border);
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* Animations */
.animate-fade-in { animation: fadeIn 1s ease-out; }
.animate-slide-up { animation: slideUp 0.8s ease-out; }
.animate-slide-up-delay { animation: slideUp 0.8s ease-out 0.2s both; }
.animate-slide-up-delay-2 { animation: slideUp 0.8s ease-out 0.4s both; }
.animate-fade-in-delay { animation: fadeIn 1s ease-out 0.6s both; }

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

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

/* Responsive */
@media (max-width: 968px) {
    .nav-links {
        display: none;
        position: absolute;
        top: 80px;
        left: 0;
        width: 100%;
        background: rgba(15, 23, 42, 0.95);
        backdrop-filter: blur(20px);
        flex-direction: column;
        padding: 20px;
        gap: 20px;
        border-bottom: 1px solid var(--border);
    }

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

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

    .nav-cta {
        display: none;
    }

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

    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
    
    .premium-article {
        padding: 24px;
    }
}

@media (max-width: 600px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-cta-group {
        flex-direction: column;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
    }
    
    .comparison-table {
        font-size: 0.85rem;
    }
    
    .comparison-table th, .comparison-table td {
        padding: 10px;
    }
}