/* =========================================
   1. VARIABLES & RESET
   ========================================= */
:root {
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --secondary: #0f172a;
    --accent: #06b6d4;
    --text-main: #1e293b;
    --text-light: #64748b;
    --bg-light: #f8fafc;
    --white: #ffffff;
    --glass-bg: rgba(255, 255, 255, 0.7);
    --glass-border: rgba(255, 255, 255, 0.5);
    --shadow-soft: 0 10px 40px rgba(0, 0, 0, 0.08);
    --shadow-glow: 0 0 20px rgba(37, 99, 235, 0.3);
    --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', system-ui, -apple-system, sans-serif;
    color: var(--text-main);
    background-color: var(--bg-light);
    line-height: 1.6;
    overflow-x: hidden;
}

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

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

ul {
    list-style: none;
}

/* =========================================
   2. BACKGROUND SHAPES & ANIMATIONS
   ========================================= */
.bg-shape {
    position: fixed;
    border-radius: 50%;
    filter: blur(100px);
    z-index: -1;
    opacity: 0.4;
    animation: float 20s infinite ease-in-out;
}

.shape-1 {
    width: 500px;
    height: 500px;
    background: linear-gradient(135deg, #3b82f6, #8b5cf6);
    top: -100px;
    left: -100px;
}

.shape-2 {
    width: 400px;
    height: 400px;
    background: linear-gradient(135deg, #06b6d4, #3b82f6);
    bottom: 10%;
    right: -100px;
    animation-delay: -5s;
}

.shape-3 {
    width: 300px;
    height: 300px;
    background: linear-gradient(135deg, #8b5cf6, #ec4899);
    top: 40%;
    left: 30%;
    animation-delay: -10s;
}

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

/* =========================================
   3. NAVIGATION
   ========================================= */
.glass-nav {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--glass-border);
    transition: var(--transition);
}

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

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--secondary);
}

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

.nav-links {
    display: flex;
    gap: 32px;
}

.nav-links a {
    font-weight: 500;
    color: var(--text-main);
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary);
    transition: var(--transition);
}

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

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

/* =========================================
   4. BUTTONS
   ========================================= */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 28px;
    border-radius: 50px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    font-size: 1rem;
}

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

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
}

.glow-btn {
    box-shadow: var(--shadow-glow);
}

.glow-btn:hover {
    box-shadow: 0 0 30px rgba(37, 99, 235, 0.5);
}

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

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

.btn-text {
    color: var(--primary);
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.btn-text:hover {
    gap: 8px;
}

/* =========================================
   5. HERO SECTION
   ========================================= */
.hero-section {
    padding: 160px 0 100px;
    position: relative;
    overflow: hidden;
}

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

.animated-badge {
    display: inline-block;
    background: rgba(37, 99, 235, 0.1);
    color: var(--primary);
    padding: 8px 16px;
    border-radius: 50px;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 20px;
    border: 1px solid rgba(37, 99, 235, 0.2);
}

.hero-content h1 {
    font-size: 3.5rem;
    line-height: 1.1;
    font-weight: 800;
    color: var(--secondary);
    margin-bottom: 24px;
    background: linear-gradient(135deg, var(--secondary) 0%, var(--primary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-intro {
    font-size: 1.125rem;
    color: var(--text-light);
    margin-bottom: 32px;
    max-width: 500px;
}

.hero-cta-group {
    display: flex;
    gap: 16px;
    margin-bottom: 48px;
}

.trust-indicators {
    display: flex;
    gap: 40px;
}

.trust-item {
    display: flex;
    flex-direction: column;
}

.trust-number {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--secondary);
}

.trust-text {
    font-size: 0.875rem;
    color: var(--text-light);
}

.hero-visual {
    position: relative;
    height: 500px;
}

.abstract-placeholder {
    width: 100%;
    height: 100%;
    border-radius: var(--radius);
    background: linear-gradient(135deg, #e0e7ff 0%, #c7d2fe 100%);
    position: relative;
    overflow: hidden;
}

.abstract-placeholder::before {
    content: '';
    position: absolute;
    top: 20%;
    left: 20%;
    width: 60%;
    height: 60%;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    border-radius: 50%;
    filter: blur(40px);
    opacity: 0.6;
}

.floating-card {
    position: absolute;
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    padding: 16px 20px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    gap: 12px;
    box-shadow: var(--shadow-soft);
    animation: floatCard 6s infinite ease-in-out;
    z-index: 10;
}

.card-1 {
    top: 10%;
    left: -20px;
}

.card-2 {
    bottom: 15%;
    right: -20px;
    animation-delay: -3s;
}

.icon-box {
    width: 40px;
    height: 40px;
    background: rgba(37, 99, 235, 0.1);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
}

.floating-card h4 {
    font-size: 0.875rem;
    font-weight: 700;
    color: var(--secondary);
}

.floating-card p {
    font-size: 0.75rem;
    color: var(--text-light);
}

@keyframes floatCard {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-15px); }
}

/* =========================================
   6. SECTIONS GENERAL
   ========================================= */
section {
    padding: 100px 0;
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 60px;
}

.section-header h2 {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--secondary);
    margin-bottom: 16px;
}

.section-header p {
    font-size: 1.125rem;
    color: var(--text-light);
}

/* =========================================
   7. SERVICES SECTION
   ========================================= */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 30px;
}

.service-card {
    background: var(--white);
    padding: 32px;
    border-radius: var(--radius);
    border: 1px solid rgba(0,0,0,0.05);
    box-shadow: var(--shadow-soft);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s ease;
}

.service-card:hover {
    transform: translateY(-10px) perspective(1000px) rotateX(2deg);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.12);
}

.service-card:hover::before {
    transform: scaleX(1);
}

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

.service-card h3 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--secondary);
}

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

.feature-list {
    margin-bottom: 24px;
}

.feature-list li {
    position: relative;
    padding-left: 20px;
    margin-bottom: 8px;
    font-size: 0.9rem;
    color: var(--text-main);
}

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

/* =========================================
   8. STATISTICS SECTION
   ========================================= */
.stats-section {
    background: linear-gradient(135deg, var(--secondary) 0%, #1e3a8a 100%);
    padding: 80px 0;
    position: relative;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
}

.stat-card {
    text-align: center;
    padding: 40px 20px;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius);
    transition: var(--transition);
}

.stat-card:hover {
    background: rgba(255, 255, 255, 0.15);
    transform: translateY(-5px);
}

.stat-number {
    display: block;
    font-size: 3rem;
    font-weight: 800;
    color: var(--white);
    margin-bottom: 8px;
}

.stat-label {
    color: rgba(255, 255, 255, 0.8);
    font-weight: 500;
}

/* =========================================
   9. 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 {
    position: relative;
    padding-left: 80px;
    margin-bottom: 40px;
}

.timeline-marker {
    position: absolute;
    left: 0;
    top: 0;
    width: 50px;
    height: 50px;
    background: var(--white);
    border: 3px solid var(--primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    color: var(--primary);
    box-shadow: 0 0 0 8px var(--bg-light);
    z-index: 2;
}

.timeline-content {
    padding: 24px;
    border-radius: var(--radius);
    background: var(--white);
    border: 1px solid rgba(0,0,0,0.05);
    box-shadow: var(--shadow-soft);
    transition: var(--transition);
}

.timeline-content:hover {
    transform: translateX(10px);
    box-shadow: 0 15px 30px rgba(0,0,0,0.1);
}

.timeline-content h3 {
    font-size: 1.125rem;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--secondary);
}

/* =========================================
   10. PORTFOLIO SECTION
   ========================================= */
.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.portfolio-card {
    position: relative;
    border-radius: var(--radius);
    overflow: hidden;
    height: 300px;
    cursor: pointer;
    box-shadow: var(--shadow-soft);
}

.placeholder-1 { background: linear-gradient(135deg, #3b82f6, #1d4ed8); }
.placeholder-2 { background: linear-gradient(135deg, #06b6d4, #0891b2); }
.placeholder-3 { background: linear-gradient(135deg, #8b5cf6, #7c3aed); }

.portfolio-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    padding: 30px;
    background: linear-gradient(to top, rgba(0,0,0,0.8), transparent);
    color: var(--white);
    transform: translateY(20px);
    opacity: 0;
    transition: var(--transition);
}

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

.portfolio-card:hover .abstract-placeholder {
    transform: scale(1.05);
    transition: transform 0.5s ease;
}

/* =========================================
   11. ARTICLE SECTION
   ========================================= */
.article-section {
    background: var(--white);
    padding: 100px 0;
}

.article-container {
    max-width: 900px;
}

.article-header {
    margin-bottom: 40px;
    padding-bottom: 30px;
    border-bottom: 1px solid rgba(0,0,0,0.1);
}

.article-category {
    display: inline-block;
    background: rgba(6, 182, 212, 0.1);
    color: #0891b2;
    padding: 6px 14px;
    border-radius: 50px;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 16px;
}

.article-header h2 {
    font-size: 2.25rem;
    font-weight: 800;
    color: var(--secondary);
    margin-bottom: 16px;
    line-height: 1.2;
}

.article-meta {
    color: var(--text-light);
    font-size: 0.9rem;
}

.article-content h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--secondary);
    margin: 40px 0 16px;
}

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

.text-link {
    color: var(--primary);
    font-weight: 600;
    text-decoration: underline;
    text-underline-offset: 4px;
}

.text-link:hover {
    color: var(--primary-dark);
}

.checklist {
    margin: 20px 0;
}

.checklist li {
    position: relative;
    padding-left: 32px;
    margin-bottom: 16px;
    font-size: 1.05rem;
}

.checklist li::before {
    content: '✓';
    position: absolute;
    left: 0;
    top: 2px;
    width: 24px;
    height: 24px;
    background: rgba(37, 99, 235, 0.1);
    color: var(--primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8rem;
    font-weight: bold;
}

.callout-box {
    padding: 24px;
    border-radius: 12px;
    margin: 30px 0;
    border-left: 4px solid;
}

.warning-box {
    background: rgba(239, 68, 68, 0.05);
    border-color: #ef4444;
    color: #991b1b;
}

.tip-box {
    background: rgba(34, 197, 94, 0.05);
    border-color: #22c55e;
    color: #14532d;
}

.comparison-table-wrapper {
    overflow-x: auto;
    margin: 30px 0;
    border-radius: 12px;
    box-shadow: var(--shadow-soft);
}

.comparison-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--white);
}

.comparison-table th,
.comparison-table td {
    padding: 16px 24px;
    text-align: left;
    border-bottom: 1px solid rgba(0,0,0,0.05);
}

.comparison-table th {
    background: var(--secondary);
    color: var(--white);
    font-weight: 600;
}

.comparison-table tr:last-child td {
    border-bottom: none;
}

.stats-box {
    background: linear-gradient(135deg, #f0f9ff, #e0f2fe);
    padding: 32px;
    border-radius: var(--radius);
    margin: 40px 0;
    border: 1px solid #bae6fd;
}

.stats-box h4 {
    text-align: center;
    font-size: 1.25rem;
    margin-bottom: 24px;
    color: var(--secondary);
}

.stats-grid-mini {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    text-align: center;
}

.stat-mini strong {
    display: block;
    font-size: 2rem;
    color: var(--primary);
    font-weight: 800;
}

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

/* =========================================
   12. FAQ SECTION
   ========================================= */
.faq-container {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    margin-bottom: 16px;
    background: var(--white);
    border: 1px solid rgba(0,0,0,0.05);
    border-radius: 12px;
    overflow: hidden;
    transition: var(--transition);
}

.faq-item:hover {
    box-shadow: var(--shadow-soft);
}

.faq-question {
    width: 100%;
    padding: 24px;
    background: none;
    border: none;
    text-align: left;
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--secondary);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.faq-icon {
    font-size: 1.5rem;
    color: var(--primary);
    transition: transform 0.3s ease;
}

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

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, padding 0.3s ease;
    padding: 0 24px;
}

.faq-item.active .faq-answer {
    max-height: 300px;
    padding: 0 24px 24px;
}

.faq-answer p {
    color: var(--text-light);
    line-height: 1.6;
}

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

.testimonial-card {
    padding: 32px;
    background: var(--white);
    border: 1px solid rgba(0,0,0,0.05);
    border-radius: var(--radius);
    transition: var(--transition);
}

.testimonial-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-soft);
}

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

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

.testimonial-header h4 {
    font-size: 1rem;
    font-weight: 700;
    color: var(--secondary);
}

.rating {
    color: #f59e0b;
    font-size: 0.9rem;
    letter-spacing: 2px;
}

.review-text {
    color: var(--text-main);
    font-style: italic;
    margin-bottom: 16px;
    line-height: 1.6;
}

.location {
    font-size: 0.875rem;
    color: var(--text-light);
}

/* =========================================
   14. CONTACT SECTION
   ========================================= */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 40px;
}

.contact-info, .contact-form-wrapper {
    padding: 40px;
    background: var(--white);
    border-radius: var(--radius);
    border: 1px solid rgba(0,0,0,0.05);
    box-shadow: var(--shadow-soft);
}

.contact-info h3, .contact-form-wrapper h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 32px;
    color: var(--secondary);
}

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

.info-icon {
    font-size: 1.5rem;
    width: 40px;
    height: 40px;
    background: rgba(37, 99, 235, 0.1);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.info-item strong {
    display: block;
    font-size: 0.875rem;
    color: var(--text-light);
    margin-bottom: 4px;
}

.info-item p, .info-item a {
    font-size: 1rem;
    font-weight: 600;
    color: var(--secondary);
}

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

.form-group label {
    display: block;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--secondary);
    margin-bottom: 8px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid #cbd5e1;
    border-radius: 8px;
    font-family: inherit;
    font-size: 1rem;
    transition: var(--transition);
    background: var(--bg-light);
}

.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);
}

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

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

.footer-logo {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--white);
    display: inline-block;
    margin-bottom: 20px;
}

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

.footer-col p {
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.6;
}

.footer-col h4 {
    font-size: 1.125rem;
    font-weight: 700;
    margin-bottom: 24px;
    color: var(--white);
}

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

.footer-col ul li a {
    color: rgba(255, 255, 255, 0.7);
    transition: var(--transition);
}

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

.social-icons {
    display: flex;
    gap: 16px;
    margin-top: 24px;
}

.social-icons a {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-weight: 700;
    transition: var(--transition);
}

.social-icons a:hover {
    background: var(--primary);
    transform: translateY(-3px);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 30px;
    text-align: center;
    color: rgba(255, 255, 255, 0.5);
    font-size: 0.875rem;
}

/* =========================================
   16. ANIMATIONS & UTILITIES
   ========================================= */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

.delay-100 { transition-delay: 0.1s; }
.delay-200 { transition-delay: 0.2s; }
.delay-300 { transition-delay: 0.3s; }
.delay-400 { transition-delay: 0.4s; }

/* =========================================
   17. RESPONSIVE DESIGN
   ========================================= */
@media (max-width: 1024px) {
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-intro {
        margin: 0 auto 32px;
    }
    
    .hero-cta-group {
        justify-content: center;
    }
    
    .trust-indicators {
        justify-content: center;
    }
    
    .hero-visual {
        display: none;
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .nav-links {
        position: fixed;
        top: 80px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 80px);
        background: var(--white);
        flex-direction: column;
        align-items: center;
        padding-top: 40px;
        transition: left 0.3s ease;
    }
    
    .nav-links.active {
        left: 0;
    }
    
    .mobile-menu-btn {
        display: block;
    }
    
    .hero-content h1 {
        font-size: 2.5rem;
    }
    
    .stats-grid-mini {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .social-icons {
        justify-content: center;
    }
}