/* =========================================
   1. CSS Variables & Reset
   ========================================= */
:root {
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --secondary: #0f172a;
    --accent: #06b6d4;
    --text-main: #334155;
    --text-light: #64748b;
    --bg-light: #f8fafc;
    --bg-alt: #f1f5f9;
    --glass-bg: rgba(255, 255, 255, 0.7);
    --glass-border: rgba(255, 255, 255, 0.5);
    --shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.1);
    --shadow-hover: 0 20px 40px -10px rgba(0, 0, 0, 0.15);
    --radius: 16px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    color: var(--text-main);
    background-color: var(--bg-light);
    line-height: 1.7;
    overflow-x: hidden;
    position: relative;
}

/* =========================================
   2. Background Shapes & Animations
   ========================================= */
.bg-shape {
    position: fixed;
    border-radius: 50%;
    filter: blur(80px);
    z-index: -1;
    opacity: 0.4;
    animation: float 20s infinite ease-in-out;
}

.shape-1 {
    width: 400px;
    height: 400px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    top: -100px;
    right: -100px;
}

.shape-2 {
    width: 300px;
    height: 300px;
    background: linear-gradient(135deg, #8b5cf6, #ec4899);
    bottom: 10%;
    left: -50px;
    animation-delay: -5s;
}

.shape-3 {
    width: 200px;
    height: 200px;
    background: linear-gradient(135deg, var(--accent), #10b981);
    top: 40%;
    right: 10%;
    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); }
}

/* =========================================
   3. Utility Classes & Glassmorphism
   ========================================= */
.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

.glass {
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

.section {
    padding: 80px 0;
}

.bg-alt {
    background-color: var(--bg-alt);
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-header h2 {
    font-size: 2.5rem;
    color: var(--secondary);
    margin-bottom: 15px;
    font-weight: 800;
}

.section-header p {
    font-size: 1.1rem;
    color: var(--text-light);
    max-width: 600px;
    margin: 0 auto;
}

/* =========================================
   4. Navigation
   ========================================= */
.navbar {
    position: fixed;
    top: 20px;
    left: 50%;
    transform: translateX(-50%);
    width: 90%;
    max-width: 1200px;
    z-index: 1000;
    padding: 15px 30px;
    transition: var(--transition);
}

.navbar.scrolled {
    top: 10px;
    background: rgba(255, 255, 255, 0.9);
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
}

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--secondary);
    text-decoration: none;
}

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

.nav-links {
    display: flex;
    list-style: none;
    gap: 30px;
    align-items: center;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-main);
    font-weight: 500;
    transition: var(--transition);
}

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

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

/* =========================================
   5. Buttons
   ========================================= */
.btn {
    display: inline-block;
    padding: 12px 28px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: white;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(37, 99, 235, 0.3);
}

.btn-secondary {
    background: transparent;
    color: var(--secondary);
    border: 2px solid var(--secondary);
}

.btn-secondary:hover {
    background: var(--secondary);
    color: white;
}

.glow-btn {
    box-shadow: 0 0 15px rgba(37, 99, 235, 0.4);
}

.glow-btn:hover {
    box-shadow: 0 0 25px rgba(37, 99, 235, 0.6);
}

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

.hero-badge {
    display: inline-block;
    background: rgba(37, 99, 235, 0.1);
    color: var(--primary);
    padding: 8px 20px;
    border-radius: 50px;
    font-weight: 600;
    font-size: 0.9rem;
    margin-bottom: 20px;
    border: 1px solid rgba(37, 99, 235, 0.2);
}

.hero h1 {
    font-size: 3rem;
    color: var(--secondary);
    line-height: 1.2;
    margin-bottom: 20px;
    font-weight: 800;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
}

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

.hero-cta {
    display: flex;
    gap: 20px;
    justify-content: center;
    margin-bottom: 60px;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 30px;
    flex-wrap: wrap;
}

.stat-card {
    padding: 25px 40px;
    text-align: center;
    min-width: 180px;
}

.stat-card .counter {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--primary);
}

.stat-card p {
    color: var(--text-light);
    font-weight: 500;
    margin-top: 5px;
}

/* =========================================
   7. Services Section
   ========================================= */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.service-card {
    padding: 35px;
    transition: var(--transition);
    cursor: default;
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-hover);
}

.css-icon {
    width: 60px;
    height: 60px;
    border-radius: 12px;
    margin-bottom: 20px;
    position: relative;
    overflow: hidden;
}

.icon-1 { background: linear-gradient(135deg, #3b82f6, #1d4ed8); }
.icon-2 { background: linear-gradient(135deg, #06b6d4, #0891b2); }
.icon-3 { background: linear-gradient(135deg, #8b5cf6, #7c3aed); }
.icon-4 { background: linear-gradient(135deg, #f59e0b, #d97706); }
.icon-5 { background: linear-gradient(135deg, #10b981, #059669); }
.icon-6 { background: linear-gradient(135deg, #ec4899, #db2777); }

.css-icon::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 30px;
    height: 30px;
    background: rgba(255,255,255,0.3);
    border-radius: 50%;
}

.service-card h3 {
    font-size: 1.3rem;
    margin-bottom: 12px;
    color: var(--secondary);
}

.service-card p {
    color: var(--text-light);
    font-size: 0.95rem;
}

/* =========================================
   8. Process 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(--accent));
}

.timeline-item {
    display: flex;
    gap: 30px;
    margin-bottom: 40px;
    position: relative;
}

.timeline-marker {
    width: 50px;
    height: 50px;
    background: var(--primary);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.2rem;
    flex-shrink: 0;
    z-index: 2;
    box-shadow: 0 0 0 5px rgba(37, 99, 235, 0.2);
}

.timeline-content {
    padding: 25px;
    flex: 1;
}

.timeline-content h3 {
    color: var(--secondary);
    margin-bottom: 10px;
}

/* =========================================
   9. Portfolio (CSS Abstract)
   ========================================= */
.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

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

.css-abstract {
    width: 100%;
    height: 100%;
    transition: var(--transition);
}

.abstract-1 {
    background: radial-gradient(circle at 30% 30%, #3b82f6, transparent 50%),
                radial-gradient(circle at 70% 70%, #06b6d4, transparent 50%),
                #f1f5f9;
}

.abstract-2 {
    background: linear-gradient(45deg, #8b5cf6 0%, #ec4899 100%);
    background-size: 200% 200%;
    animation: gradientShift 5s ease infinite;
}

@keyframes gradientShift {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

.abstract-3 {
    background: conic-gradient(from 0deg at 50% 50%, #10b981, #3b82f6, #8b5cf6, #10b981);
    opacity: 0.8;
}

.portfolio-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: rgba(15, 23, 42, 0.9);
    color: white;
    padding: 25px;
    transform: translateY(100%);
    transition: var(--transition);
}

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

.portfolio-card:hover .css-abstract {
    transform: scale(1.1);
}

/* =========================================
   10. Article Section (Rich Content)
   ========================================= */
.article-container {
    max-width: 900px;
}

.article-content {
    padding: 50px;
}

.article-content h2 {
    font-size: 2rem;
    color: var(--secondary);
    margin: 40px 0 20px;
    padding-bottom: 10px;
    border-bottom: 2px solid rgba(37, 99, 235, 0.1);
}

.article-content h2:first-child {
    margin-top: 0;
}

.article-content h3 {
    font-size: 1.4rem;
    color: var(--primary-dark);
    margin: 30px 0 15px;
}

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

.article-content a {
    color: var(--primary);
    text-decoration: underline;
    text-underline-offset: 3px;
    font-weight: 600;
}

.callout-box {
    padding: 20px 25px;
    border-radius: 12px;
    margin: 25px 0;
    border-left: 4px solid;
}

.callout-box.warning {
    background: rgba(245, 158, 11, 0.1);
    border-left-color: #f59e0b;
    color: #92400e;
}

.tip-box {
    background: rgba(16, 185, 129, 0.1);
    border-left: 4px solid #10b981;
    padding: 20px 25px;
    border-radius: 12px;
    margin: 25px 0;
    color: #065f46;
}

.feature-card {
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.05), rgba(6, 182, 212, 0.05));
    padding: 25px;
    border-radius: 12px;
    margin: 25px 0;
    border: 1px solid rgba(37, 99, 235, 0.1);
}

.feature-card h4 {
    color: var(--primary-dark);
    margin-bottom: 10px;
    font-size: 1.2rem;
}

.checklist {
    list-style: none;
    margin: 20px 0;
}

.checklist li {
    padding: 10px 0 10px 35px;
    position: relative;
    font-size: 1.05rem;
}

.checklist li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: #10b981;
    font-weight: 800;
    font-size: 1.2rem;
}

.comparison-table {
    overflow-x: auto;
    margin: 30px 0;
    padding: 0;
}

.comparison-table table {
    width: 100%;
    border-collapse: collapse;
}

.comparison-table th,
.comparison-table td {
    padding: 15px;
    text-align: left;
    border-bottom: 1px solid rgba(0,0,0,0.05);
}

.comparison-table th {
    background: rgba(37, 99, 235, 0.05);
    color: var(--secondary);
    font-weight: 700;
}

/* =========================================
   11. FAQ Section
   ========================================= */
.faq-section {
    margin-top: 40px;
}

.faq-item {
    border-bottom: 1px solid rgba(0,0,0,0.1);
    margin-bottom: 10px;
}

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

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

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

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease-out;
    color: var(--text-light);
}

.faq-item.active .faq-answer {
    max-height: 300px;
    padding-bottom: 20px;
}

/* =========================================
   12. Testimonials
   ========================================= */
.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.testimonial-card {
    padding: 35px;
    transition: var(--transition);
}

.testimonial-card:hover {
    transform: translateY(-5px);
}

.stars {
    color: #f59e0b;
    font-size: 1.2rem;
    margin-bottom: 15px;
    letter-spacing: 2px;
}

.testimonial-card p {
    font-style: italic;
    color: var(--text-main);
    margin-bottom: 25px;
    font-size: 1.05rem;
}

.client-info {
    display: flex;
    align-items: center;
    gap: 15px;
}

.client-avatar {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.1rem;
}

.client-info strong {
    display: block;
    color: var(--secondary);
}

.client-info span {
    font-size: 0.9rem;
    color: var(--text-light);
}

/* =========================================
   13. Contact Section
   ========================================= */
.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    padding: 50px;
}

.contact-info h3,
.contact-form-container h3 {
    font-size: 1.5rem;
    color: var(--secondary);
    margin-bottom: 25px;
}

.info-item {
    display: flex;
    gap: 15px;
    margin-bottom: 25px;
    align-items: flex-start;
}

.info-icon {
    font-size: 1.5rem;
    width: 40px;
    height: 40px;
    background: rgba(37, 99, 235, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.info-item strong {
    display: block;
    color: var(--secondary);
    margin-bottom: 5px;
}

.info-item a {
    color: var(--primary);
    text-decoration: none;
    font-weight: 500;
}

.info-item a:hover {
    text-decoration: underline;
}

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

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--secondary);
    font-size: 0.95rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 14px;
    border: 1px solid rgba(0,0,0,0.1);
    border-radius: 8px;
    font-family: inherit;
    font-size: 1rem;
    transition: var(--transition);
    background: rgba(255,255,255,0.5);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
    background: white;
}

/* =========================================
   14. Footer
   ========================================= */
.footer {
    background: var(--secondary);
    color: white;
    padding: 80px 0 30px;
}

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

.footer-col h4 {
    font-size: 1.2rem;
    margin-bottom: 20px;
    color: white;
}

.footer-col h4 span {
    color: var(--accent);
}

.footer-col p {
    color: #94a3b8;
    line-height: 1.8;
    margin-bottom: 15px;
}

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

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

.footer-col ul li a {
    color: #94a3b8;
    text-decoration: none;
    transition: var(--transition);
}

.footer-col ul li a:hover {
    color: var(--accent);
    padding-left: 5px;
}

.footer-col a {
    color: #94a3b8;
    text-decoration: none;
}

.footer-col a:hover {
    color: var(--accent);
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 30px;
    text-align: center;
    color: #64748b;
    font-size: 0.9rem;
}

/* =========================================
   15. Scroll Reveal Animation
   ========================================= */
.scroll-reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

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

/* =========================================
   16. Responsive Design
   ========================================= */
@media (max-width: 968px) {
    .hero h1 {
        font-size: 2.2rem;
    }
    
    .contact-wrapper {
        grid-template-columns: 1fr;
    }
    
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .mobile-menu-btn {
        display: block;
    }
    
    .nav-links {
        position: fixed;
        top: 80px;
        left: 5%;
        width: 90%;
        background: rgba(255, 255, 255, 0.95);
        backdrop-filter: blur(20px);
        flex-direction: column;
        padding: 30px;
        border-radius: var(--radius);
        box-shadow: var(--shadow-hover);
        transform: translateY(-150%);
        transition: var(--transition);
        z-index: 999;
    }
    
    .nav-links.active {
        transform: translateY(0);
    }
    
    .hero-cta {
        flex-direction: column;
        align-items: center;
    }
    
    .hero-stats {
        flex-direction: column;
        align-items: center;
    }
    
    .article-content {
        padding: 25px;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .timeline::before {
        left: 20px;
    }
    
    .timeline-marker {
        width: 40px;
        height: 40px;
        font-size: 1rem;
    }
}