/* Design System & Base Styles */
@import url('https://fonts.googleapis.com/css2?family=Pretendard:wght@300;400;500;600;700;800&family=Outfit:wght@400;600;800;900&display=swap');

:root {
    --primary: #0ea5e9;
    --primary-glow: rgba(14, 165, 233, 0.5);
    --secondary: #0f172a;
    --accent: #38bdf8;
    --accent-glow: rgba(56, 189, 248, 0.4);
    --bg-main: #020617;
    --bg-card: rgba(15, 23, 42, 0.6);
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --white: #ffffff;
    --glass-border: rgba(255, 255, 255, 0.1);
    --shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    --transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
}

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

/* Noise & Glow FX */
.noise-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    pointer-events: none;
    z-index: 9999;
    opacity: 0.03;
    background: url('data:image/svg+xml;utf8,%3Csvg viewBox="0 0 200 200" xmlns="http://www.w3.org/2000/svg"%3E%3Cfilter id="noiseFilter"%3E%3CfeTurbulence type="fractalNoise" baseFrequency="0.65" numOctaves="3" stitchTiles="stitch"/%3E%3C/filter%3E%3Crect width="100%25" height="100%25" filter="url(%23noiseFilter)"/%3E%3C/svg%3E');
}

.cursor-glow {
    position: fixed;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, var(--primary-glow) 0%, transparent 60%);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    pointer-events: none;
    z-index: 0;
    transition: width 0.3s, height 0.3s;
    mix-blend-mode: screen;
}

/* Glassmorphism Panel */
.glass-panel {
    background: var(--bg-card);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--glass-border);
    box-shadow: var(--shadow);
    border-radius: 24px;
}

/* Typography */
h1, h2, h3, h4 {
    line-height: 1.2;
    font-weight: 800;
}

.gradient-text {
    background: linear-gradient(to right, #38bdf8, #818cf8);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    display: inline-block;
}

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

ul {
    list-style: none;
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

/* Header & Nav */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: 20px 0;
    transition: var(--transition);
}

.navbar.scrolled {
    background: rgba(2, 6, 23, 0.8);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--glass-border);
    padding: 15px 0;
}

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

.logo {
    font-family: 'Outfit', sans-serif;
    font-size: 1.8rem;
    font-weight: 900;
    color: var(--white);
    display: flex;
    align-items: center;
    gap: 8px;
    letter-spacing: -0.5px;
}

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

.logo-dot {
    width: 8px;
    height: 8px;
    background: var(--accent);
    border-radius: 50%;
    margin-top: 8px;
    box-shadow: 0 0 10px var(--accent);
}

.nav-links {
    display: flex;
    gap: 40px;
}

.nav-link {
    font-weight: 600;
    color: var(--text-muted);
    font-size: 1.05rem;
    position: relative;
}

.nav-link:hover {
    color: var(--white);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0%;
    height: 2px;
    background: var(--primary);
    transition: var(--transition);
}

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

.btn-phone {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(14, 165, 233, 0.1);
    border: 1px solid var(--primary);
    color: var(--primary);
    padding: 10px 24px;
    border-radius: 50px;
    font-weight: 700;
    font-size: 1.1rem;
    transition: var(--transition);
}

.btn-phone:hover {
    background: var(--primary);
    color: var(--white);
    box-shadow: 0 0 20px var(--primary-glow);
}

/* Buttons */
.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: var(--primary);
    color: var(--white);
    padding: 16px 32px;
    border-radius: 50px;
    font-weight: 700;
    font-size: 1.1rem;
    border: none;
    cursor: pointer;
    transition: var(--transition);
}

.btn-primary-large {
    width: 100%;
    display: inline-flex;
    justify-content: center;
    align-items: center;
    gap: 10px;
    background: linear-gradient(135deg, var(--primary), #818cf8);
    color: var(--white);
    padding: 20px 32px;
    border-radius: 16px;
    font-weight: 700;
    font-size: 1.25rem;
    border: none;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: 0 10px 20px rgba(14, 165, 233, 0.3);
}

.btn-primary-large:hover, .btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 30px rgba(14, 165, 233, 0.5);
    background: linear-gradient(135deg, #38bdf8, #6366f1);
}

.btn-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    background: transparent;
    color: var(--white);
    padding: 16px 32px;
    border-radius: 50px;
    font-weight: 700;
    font-size: 1.1rem;
    border: 2px solid var(--glass-border);
    cursor: pointer;
    transition: var(--transition);
}

.btn-secondary:hover {
    border-color: var(--white);
    background: rgba(255, 255, 255, 0.05);
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    padding-top: 80px;
    background: radial-gradient(ellipse at top right, rgba(14, 165, 233, 0.15), transparent 50%),
                radial-gradient(ellipse at bottom left, rgba(99, 102, 241, 0.15), transparent 50%);
}

.badge-premium {
    display: inline-block;
    padding: 8px 16px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--glass-border);
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 700;
    letter-spacing: 1px;
    margin-bottom: 30px;
    color: var(--accent);
}

.hero-content {
    max-width: 900px;
}

.hero-title {
    font-size: clamp(3rem, 6vw, 5rem);
    margin-bottom: 25px;
    letter-spacing: -1.5px;
}

.hero-subtitle {
    font-size: clamp(1.1rem, 2vw, 1.4rem);
    color: var(--text-muted);
    margin-bottom: 50px;
    max-width: 700px;
    font-weight: 300;
}

.hero-actions {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}

/* Stats */
.stats-section {
    padding: 60px 0;
    border-top: 1px solid var(--glass-border);
    border-bottom: 1px solid var(--glass-border);
    background: rgba(255, 255, 255, 0.01);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    text-align: center;
}

.stat-num {
    font-family: 'Outfit', sans-serif;
    font-size: 3.5rem;
    font-weight: 900;
    color: var(--white);
    margin-bottom: 10px;
    text-shadow: 0 0 20px var(--primary-glow);
}

.stat-label {
    color: var(--text-muted);
    font-weight: 600;
    font-size: 1.1rem;
    letter-spacing: 1px;
}

/* Section Common */
section:not(.hero):not(.stats-section) {
    padding: 120px 0;
}

.section-header {
    margin-bottom: 70px;
}

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

.sub-heading {
    display: block;
    color: var(--primary);
    font-weight: 700;
    letter-spacing: 2px;
    margin-bottom: 15px;
    font-size: 0.9rem;
}

.section-title {
    font-size: 2.8rem;
    color: var(--white);
}

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

.service-card {
    padding: 50px 40px;
    transition: var(--transition);
}

.service-card:hover {
    transform: translateY(-10px);
    border-color: rgba(14, 165, 233, 0.3);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5), 0 0 20px rgba(14, 165, 233, 0.1);
}

.icon-box {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, rgba(14, 165, 233, 0.1), rgba(99, 102, 241, 0.1));
    border: 1px solid rgba(14, 165, 233, 0.2);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: var(--primary);
    margin-bottom: 30px;
}

.service-card h3 {
    font-size: 1.6rem;
    margin-bottom: 20px;
    color: var(--white);
}

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

/* Contact / Form */
.contact-card {
    padding: 60px;
    max-width: 900px;
    margin: 0 auto;
    position: relative;
    overflow: hidden;
}

.contact-card::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle, rgba(14, 165, 233, 0.1) 0%, transparent 70%);
    pointer-events: none;
}

.contact-header {
    text-align: center;
    margin-bottom: 50px;
}

.contact-header h2 {
    font-size: 2.5rem;
    margin-bottom: 15px;
}

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

.form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
    margin-bottom: 30px;
}

.form-group label {
    display: block;
    margin-bottom: 10px;
    font-weight: 600;
    color: #cbd5e1;
}

.form-group input {
    width: 100%;
    padding: 18px 25px;
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    color: var(--white);
    font-size: 1.1rem;
    font-family: inherit;
    transition: var(--transition);
}

.form-group input:focus {
    outline: none;
    border-color: var(--primary);
    background: rgba(14, 165, 233, 0.05);
    box-shadow: 0 0 0 4px rgba(14, 165, 233, 0.1);
}

.form-privacy {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 40px;
    padding: 20px;
    background: rgba(0, 0, 0, 0.2);
    border-radius: 12px;
}

.form-privacy input[type="checkbox"] {
    width: 20px;
    height: 20px;
    accent-color: var(--primary);
    cursor: pointer;
}

.form-privacy label {
    font-size: 0.95rem;
    color: var(--text-muted);
    cursor: pointer;
}

.form-privacy a {
    color: var(--primary);
    text-decoration: underline;
}

/* Footer */
.footer {
    border-top: 1px solid var(--glass-border);
    padding: 80px 0 40px;
    background: #000000;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    flex-wrap: wrap;
    gap: 40px;
    margin-bottom: 60px;
}

.footer-info .logo {
    margin-bottom: 20px;
}

.footer-info p {
    color: var(--text-muted);
    max-width: 300px;
}

.footer-contact p {
    color: var(--text-muted);
    margin-bottom: 10px;
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid #1e293b;
    color: #475569;
    font-size: 0.9rem;
}

/* Animations Reveal */
.reveal-up {
    opacity: 0;
    transform: translateY(40px);
    transition: all 0.8s cubic-bezier(0.5, 0, 0, 1);
}

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

/* Modal */
.modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(10px);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.modal.show {
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 1;
}

.modal-content {
    width: 90%;
    max-width: 600px;
    transform: translateY(-30px);
    transition: transform 0.3s ease;
}

.modal.show .modal-content {
    transform: translateY(0);
}

.modal-header {
    padding: 25px 30px;
    border-bottom: 1px solid var(--glass-border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.close-modal {
    font-size: 28px;
    color: var(--text-muted);
    cursor: pointer;
    transition: var(--transition);
}

.close-modal:hover {
    color: var(--white);
}

.modal-body {
    padding: 30px;
    color: var(--text-muted);
    line-height: 1.8;
}

.modal-body ul {
    margin-top: 15px;
    padding-left: 20px;
    list-style: disc;
}

/* Responsive */
@media (max-width: 768px) {
    .nav-links { display: none; }
    .hero-title { font-size: 2.5rem; }
    .hero-actions { flex-direction: column; width: 100%; }
    .btn-primary, .btn-secondary { width: 100%; }
    .stats-grid { grid-template-columns: 1fr; gap: 40px; }
    .form-grid { grid-template-columns: 1fr; gap: 20px; }
    .contact-card { padding: 40px 20px; }
}