/* ================================
   VOLVENCE STUDIO - Main Stylesheet
   ================================ */

:root {
    --color-bg: #0a0a0a;
    --color-bg-light: #111111;
    --color-bg-card: #161616;
    --color-text: #ffffff;
    --color-text-muted: #888888;
    --color-text-dim: #555555;
    --color-accent: #c9ff00;
    --color-accent-hover: #d4ff33;
    --color-border: #222222;
    --color-border-light: #333333;
    --font-display: 'Syne', sans-serif;
    --font-serif: 'Instrument Serif', serif;
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 5rem;
    --spacing-3xl: 8rem;
    --transition-fast: 0.2s ease;
    --transition-base: 0.3s ease;
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 16px;
    --radius-xl: 24px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { font-family: var(--font-display); font-size: 16px; line-height: 1.6; color: var(--color-text); background-color: var(--color-bg); -webkit-font-smoothing: antialiased; }
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 var(--spacing-md); }
h1, h2, h3, h4 { font-family: var(--font-display); font-weight: 600; line-height: 1.2; }
em { font-family: var(--font-serif); font-style: italic; font-weight: 400; }

/* Navigation */
.nav { position: fixed; top: 0; left: 0; right: 0; z-index: 1000; padding: var(--spacing-md) 0; background: rgba(10, 10, 10, 0.8); backdrop-filter: blur(20px); border-bottom: 1px solid transparent; transition: var(--transition-base); }
.nav.scrolled { border-bottom-color: var(--color-border); }
.nav-container { max-width: 1200px; margin: 0 auto; padding: 0 var(--spacing-md); display: flex; align-items: center; justify-content: space-between; }
.logo { display: flex; align-items: baseline; gap: 0.3rem; }
.logo-text { font-size: 1.5rem; font-weight: 700; letter-spacing: -0.02em; }
.logo-studio { font-family: var(--font-serif); font-size: 1.2rem; font-style: italic; color: var(--color-accent); }
.nav-links { display: flex; align-items: center; gap: var(--spacing-lg); }
.nav-links a { font-size: 0.9rem; font-weight: 500; color: var(--color-text-muted); transition: var(--transition-fast); position: relative; }
.nav-links a::after { content: ''; position: absolute; bottom: -4px; left: 0; width: 0; height: 2px; background: var(--color-accent); transition: var(--transition-base); }
.nav-links a:hover, .nav-links a.active { color: var(--color-text); }
.nav-links a:hover::after, .nav-links a.active::after { width: 100%; }
.nav-toggle { display: none; flex-direction: column; gap: 6px; background: none; border: none; cursor: pointer; padding: 4px; }
.nav-toggle span { width: 24px; height: 2px; background: var(--color-text); transition: var(--transition-base); }

/* Hero */
.hero { min-height: 100vh; display: flex; align-items: center; position: relative; overflow: hidden; padding-top: 80px; }
.hero-bg { position: absolute; inset: 0; z-index: 0; }
.hero-gradient { position: absolute; top: -50%; right: -20%; width: 80%; height: 100%; background: radial-gradient(ellipse at center, rgba(201, 255, 0, 0.08) 0%, transparent 60%); filter: blur(60px); animation: float 20s ease-in-out infinite; }
@keyframes float { 0%, 100% { transform: translate(0, 0) rotate(0deg); } 33% { transform: translate(30px, -30px) rotate(5deg); } 66% { transform: translate(-20px, 20px) rotate(-3deg); } }
.hero-grid { position: absolute; inset: 0; background-image: linear-gradient(rgba(255,255,255,0.02) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,0.02) 1px, transparent 1px); background-size: 60px 60px; mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%); }
.hero-content { position: relative; z-index: 1; max-width: 1200px; margin: 0 auto; padding: 0 var(--spacing-md); }
.hero-tag { display: inline-flex; align-items: center; gap: var(--spacing-xs); font-size: 0.85rem; font-weight: 500; color: var(--color-text-muted); margin-bottom: var(--spacing-lg); animation: fadeInUp 0.8s ease forwards; }
.tag-dot { width: 8px; height: 8px; background: var(--color-accent); border-radius: 50%; animation: pulse 2s ease-in-out infinite; }
@keyframes pulse { 0%, 100% { opacity: 1; transform: scale(1); } 50% { opacity: 0.5; transform: scale(1.2); } }
.hero-title { font-size: clamp(3rem, 8vw, 5.5rem); font-weight: 700; line-height: 1.05; letter-spacing: -0.03em; margin-bottom: var(--spacing-lg); }
.title-line { display: block; animation: fadeInUp 0.8s ease forwards; opacity: 0; }
.title-line:nth-child(1) { animation-delay: 0.1s; }
.title-line:nth-child(2) { animation-delay: 0.2s; }
.title-line:nth-child(3) { animation-delay: 0.3s; }
.title-italic { font-family: var(--font-serif); font-style: italic; font-weight: 400; color: var(--color-accent); }
@keyframes fadeInUp { from { opacity: 0; transform: translateY(30px); } to { opacity: 1; transform: translateY(0); } }
.hero-subtitle { font-size: 1.25rem; color: var(--color-text-muted); max-width: 540px; margin-bottom: var(--spacing-xl); animation: fadeInUp 0.8s ease 0.4s forwards; opacity: 0; }
.hero-cta { display: flex; gap: var(--spacing-sm); animation: fadeInUp 0.8s ease 0.5s forwards; opacity: 0; }
.hero-scroll { position: absolute; bottom: var(--spacing-xl); left: 50%; transform: translateX(-50%); display: flex; flex-direction: column; align-items: center; gap: var(--spacing-sm); color: var(--color-text-dim); font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.1em; }
.scroll-line { width: 1px; height: 60px; background: linear-gradient(to bottom, var(--color-text-dim), transparent); animation: scrollPulse 2s ease-in-out infinite; }
@keyframes scrollPulse { 0%, 100% { opacity: 0.5; height: 60px; } 50% { opacity: 1; height: 80px; } }

/* Buttons */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: var(--spacing-xs); padding: 1rem 1.75rem; font-family: var(--font-display); font-size: 0.9rem; font-weight: 600; border-radius: var(--radius-lg); border: none; cursor: pointer; transition: var(--transition-base); }
.btn svg { transition: var(--transition-base); }
.btn:hover svg { transform: translateX(4px); }
.btn-primary { background: var(--color-accent); color: var(--color-bg); }
.btn-primary:hover { background: var(--color-accent-hover); transform: translateY(-2px); box-shadow: 0 10px 30px rgba(201, 255, 0, 0.2); }
.btn-secondary { background: var(--color-bg-card); color: var(--color-text); border: 1px solid var(--color-border); }
.btn-secondary:hover { background: var(--color-bg-light); border-color: var(--color-border-light); }
.btn-light { background: var(--color-text); color: var(--color-bg); }
.btn-light:hover { transform: translateY(-2px); box-shadow: 0 10px 30px rgba(255, 255, 255, 0.2); }
.btn-full { width: 100%; }
.link-arrow { display: inline-flex; align-items: center; gap: var(--spacing-xs); font-weight: 600; color: var(--color-accent); transition: var(--transition-base); }
.link-arrow:hover { gap: var(--spacing-sm); }
.link-arrow:hover svg { transform: translateX(4px); }

/* Sections */
.section-header { margin-bottom: var(--spacing-2xl); }
.section-tag { display: inline-block; font-size: 0.8rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.15em; color: var(--color-accent); margin-bottom: var(--spacing-sm); }
.section-title { font-size: clamp(2.5rem, 5vw, 3.5rem); font-weight: 700; letter-spacing: -0.02em; }

/* Services Preview */
.services-preview { padding: var(--spacing-3xl) 0; background: var(--color-bg-light); }
.services-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--spacing-md); margin-bottom: var(--spacing-xl); }
.service-card { background: var(--color-bg-card); border: 1px solid var(--color-border); border-radius: var(--radius-xl); padding: var(--spacing-xl); position: relative; overflow: hidden; transition: var(--transition-base); }
.service-card:hover { border-color: var(--color-border-light); transform: translateY(-4px); }
.service-card:hover .service-icon { color: var(--color-accent); }
.service-icon { color: var(--color-text-muted); margin-bottom: var(--spacing-lg); transition: var(--transition-base); }
.service-card h3 { font-size: 1.5rem; margin-bottom: var(--spacing-sm); }
.service-card p { color: var(--color-text-muted); font-size: 0.95rem; }
.service-number { position: absolute; top: var(--spacing-lg); right: var(--spacing-lg); font-size: 0.8rem; font-weight: 600; color: var(--color-text-dim); }
.services-cta { text-align: center; }

/* Stats */
.stats { padding: var(--spacing-2xl) 0; border-top: 1px solid var(--color-border); border-bottom: 1px solid var(--color-border); }
.stats-grid { display: flex; justify-content: center; align-items: center; gap: var(--spacing-2xl); }
.stat-item { text-align: center; }
.stat-number { display: block; font-size: 3.5rem; font-weight: 700; color: var(--color-accent); line-height: 1; margin-bottom: var(--spacing-xs); }
.stat-label { font-size: 0.9rem; color: var(--color-text-muted); }
.stat-divider { width: 1px; height: 60px; background: var(--color-border); }

/* CTA Section */
.cta-section { padding: var(--spacing-3xl) 0; background: linear-gradient(135deg, var(--color-accent) 0%, #a8d600 100%); position: relative; overflow: hidden; }
.cta-section::before { content: ''; position: absolute; inset: 0; background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23000000' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E"); }
.cta-content { position: relative; text-align: center; max-width: 600px; margin: 0 auto; }
.cta-content h2 { font-size: clamp(2rem, 4vw, 3rem); color: var(--color-bg); margin-bottom: var(--spacing-md); }
.cta-content p { font-size: 1.1rem; color: rgba(0, 0, 0, 0.7); margin-bottom: var(--spacing-lg); }

/* Page Header */
.page-header { padding: calc(80px + var(--spacing-3xl)) 0 var(--spacing-3xl); background: var(--color-bg-light); border-bottom: 1px solid var(--color-border); }
.page-header-short { padding-bottom: var(--spacing-2xl); }
.page-header-content { max-width: 700px; }
.page-title { font-size: clamp(2.5rem, 6vw, 4rem); font-weight: 700; letter-spacing: -0.02em; margin-bottom: var(--spacing-md); }
.page-subtitle { font-size: 1.2rem; color: var(--color-text-muted); }

/* Services Detail */
.services-detail { padding: var(--spacing-3xl) 0; }
.service-block { display: grid; grid-template-columns: auto 1fr; gap: var(--spacing-2xl); padding: var(--spacing-2xl) 0; border-bottom: 1px solid var(--color-border); }
.service-block:last-child { border-bottom: none; }
.service-block-header { display: flex; flex-direction: column; align-items: center; gap: var(--spacing-md); min-width: 120px; }
.service-block-number { font-size: 0.9rem; font-weight: 700; color: var(--color-accent); }
.service-block-icon { color: var(--color-text-muted); }
.service-block-content h2 { font-size: 2rem; margin-bottom: var(--spacing-md); }
.service-block-intro { font-size: 1.1rem; color: var(--color-text-muted); margin-bottom: var(--spacing-xl); max-width: 700px; }
.service-features { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--spacing-lg); margin-bottom: var(--spacing-xl); }
.feature h4 { font-size: 1rem; margin-bottom: var(--spacing-xs); }
.feature p { font-size: 0.9rem; color: var(--color-text-muted); }
.service-tech { display: flex; align-items: center; gap: var(--spacing-md); flex-wrap: wrap; }
.tech-label { font-size: 0.85rem; color: var(--color-text-muted); }
.tech-tags { display: flex; gap: var(--spacing-xs); flex-wrap: wrap; }
.tech-tags span { padding: 0.4rem 0.8rem; background: var(--color-bg-card); border: 1px solid var(--color-border); border-radius: var(--radius-md); font-size: 0.8rem; color: var(--color-text-muted); }

/* Process */
.process-section { padding: var(--spacing-3xl) 0; background: var(--color-bg-light); }
.process-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--spacing-md); }
.process-step { padding: var(--spacing-lg); border: 1px solid var(--color-border); border-radius: var(--radius-xl); transition: var(--transition-base); }
.process-step:hover { border-color: var(--color-accent); }
.process-number { display: inline-block; font-size: 0.8rem; font-weight: 700; color: var(--color-accent); margin-bottom: var(--spacing-md); }
.process-step h3 { font-size: 1.25rem; margin-bottom: var(--spacing-sm); }
.process-step p { font-size: 0.9rem; color: var(--color-text-muted); }

/* About */
.about-content { padding: var(--spacing-3xl) 0; }
.about-intro { display: grid; grid-template-columns: 1fr 1fr; gap: var(--spacing-2xl); align-items: center; }
.about-intro-text h2 { font-size: 2.5rem; margin-bottom: var(--spacing-lg); }
.about-intro-text p { color: var(--color-text-muted); margin-bottom: var(--spacing-md); font-size: 1.05rem; }
.image-placeholder { aspect-ratio: 4/3; background: var(--color-bg-card); border: 1px solid var(--color-border); border-radius: var(--radius-xl); display: flex; align-items: center; justify-content: center; color: var(--color-text-dim); font-size: 0.9rem; }

/* Values */
.values-section { padding: var(--spacing-3xl) 0; background: var(--color-bg-light); }
.values-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--spacing-md); }
.value-card { padding: var(--spacing-lg); background: var(--color-bg-card); border: 1px solid var(--color-border); border-radius: var(--radius-xl); transition: var(--transition-base); }
.value-card:hover { border-color: var(--color-border-light); }
.value-icon { color: var(--color-accent); margin-bottom: var(--spacing-md); }
.value-card h3 { font-size: 1.25rem; margin-bottom: var(--spacing-sm); }
.value-card p { font-size: 0.9rem; color: var(--color-text-muted); }

/* Why Us */
.why-us-section { padding: var(--spacing-3xl) 0; }
.why-us-grid { display: grid; grid-template-columns: 1fr 1fr; gap: var(--spacing-2xl); align-items: start; }
.why-us-content h2 { font-size: 2.5rem; margin-bottom: var(--spacing-xl); }
.why-us-list { display: flex; flex-direction: column; gap: var(--spacing-lg); }
.why-us-list li { display: flex; gap: var(--spacing-md); }
.check-icon { flex-shrink: 0; width: 32px; height: 32px; background: rgba(201, 255, 0, 0.1); border-radius: 50%; display: flex; align-items: center; justify-content: center; color: var(--color-accent); }
.why-us-list strong { display: block; margin-bottom: var(--spacing-xs); }
.why-us-list p { font-size: 0.9rem; color: var(--color-text-muted); }
.why-us-stats { background: var(--color-bg-card); border: 1px solid var(--color-border); border-radius: var(--radius-xl); padding: var(--spacing-xl); }
.stat-block { padding: var(--spacing-lg) 0; text-align: center; border-bottom: 1px solid var(--color-border); }
.stat-block:last-child { border-bottom: none; }
.stat-value { display: block; font-size: 3rem; font-weight: 700; color: var(--color-accent); line-height: 1; margin-bottom: var(--spacing-xs); }
.stat-text { font-size: 0.9rem; color: var(--color-text-muted); }

/* Contact */
.contact-section { padding: var(--spacing-3xl) 0; }
.contact-grid { display: grid; grid-template-columns: 1.2fr 0.8fr; gap: var(--spacing-2xl); }
.contact-form { background: var(--color-bg-card); border: 1px solid var(--color-border); border-radius: var(--radius-xl); padding: var(--spacing-xl); }
.form-group { margin-bottom: var(--spacing-md); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: var(--spacing-md); }
.form-group label { display: block; font-size: 0.85rem; font-weight: 500; margin-bottom: var(--spacing-xs); color: var(--color-text-muted); }
.form-group input, .form-group select, .form-group textarea { width: 100%; padding: 0.875rem 1rem; font-family: var(--font-display); font-size: 0.95rem; color: var(--color-text); background: var(--color-bg); border: 1px solid var(--color-border); border-radius: var(--radius-md); transition: var(--transition-fast); }
.form-group input:focus, .form-group select:focus, .form-group textarea:focus { outline: none; border-color: var(--color-accent); box-shadow: 0 0 0 3px rgba(201, 255, 0, 0.1); }
.form-group input::placeholder, .form-group textarea::placeholder { color: var(--color-text-dim); }
.form-group select { cursor: pointer; appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='%23888888' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 1rem center; background-size: 16px; }
.form-group textarea { resize: vertical; min-height: 120px; }
.form-checkbox { display: flex; align-items: flex-start; gap: var(--spacing-sm); }
.form-checkbox input { width: auto; margin-top: 4px; accent-color: var(--color-accent); }
.form-checkbox label { margin-bottom: 0; font-size: 0.85rem; }
.form-checkbox a { color: var(--color-accent); text-decoration: underline; }
.contact-info { display: flex; flex-direction: column; gap: var(--spacing-xl); }
.contact-info-block h3 { font-size: 1.5rem; margin-bottom: var(--spacing-sm); }
.contact-info-block p { color: var(--color-text-muted); }
.contact-details { display: flex; flex-direction: column; gap: var(--spacing-md); }
.contact-item { display: flex; align-items: flex-start; gap: var(--spacing-md); }
.contact-icon { flex-shrink: 0; width: 48px; height: 48px; background: var(--color-bg-card); border: 1px solid var(--color-border); border-radius: var(--radius-md); display: flex; align-items: center; justify-content: center; color: var(--color-accent); }
.contact-label { display: block; font-size: 0.8rem; color: var(--color-text-dim); margin-bottom: 2px; }
.contact-item a { font-weight: 500; transition: var(--transition-fast); }
.contact-item a:hover { color: var(--color-accent); }
.contact-social h4 { font-size: 1rem; margin-bottom: var(--spacing-sm); }
.social-links { display: flex; gap: var(--spacing-sm); }
.social-link { width: 44px; height: 44px; background: var(--color-bg-card); border: 1px solid var(--color-border); border-radius: var(--radius-md); display: flex; align-items: center; justify-content: center; color: var(--color-text-muted); transition: var(--transition-base); }
.social-link:hover { border-color: var(--color-accent); color: var(--color-accent); }
.contact-response { display: flex; align-items: center; gap: var(--spacing-md); padding: var(--spacing-md); background: rgba(201, 255, 0, 0.05); border: 1px solid rgba(201, 255, 0, 0.2); border-radius: var(--radius-md); }
.response-icon { color: var(--color-accent); }
.contact-response p { font-size: 0.9rem; color: var(--color-text-muted); }

/* FAQ */
.faq-section { padding: var(--spacing-3xl) 0; background: var(--color-bg-light); }
.faq-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--spacing-md); }
.faq-item { padding: var(--spacing-lg); background: var(--color-bg-card); border: 1px solid var(--color-border); border-radius: var(--radius-xl); }
.faq-item h3 { font-size: 1.1rem; margin-bottom: var(--spacing-sm); }
.faq-item p { font-size: 0.9rem; color: var(--color-text-muted); }

/* Footer */
.footer { padding: var(--spacing-3xl) 0 var(--spacing-lg); background: var(--color-bg); border-top: 1px solid var(--color-border); }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: var(--spacing-2xl); margin-bottom: var(--spacing-2xl); }
.footer-brand p { margin-top: var(--spacing-md); font-size: 0.9rem; color: var(--color-text-muted); max-width: 280px; }
.footer-links h4, .footer-contact h4 { font-size: 0.9rem; font-weight: 600; margin-bottom: var(--spacing-md); }
.footer-links ul, .footer-contact ul { display: flex; flex-direction: column; gap: var(--spacing-sm); }
.footer-links a, .footer-contact li { font-size: 0.9rem; color: var(--color-text-muted); transition: var(--transition-fast); }
.footer-links a:hover { color: var(--color-text); }
.footer-bottom { padding-top: var(--spacing-lg); border-top: 1px solid var(--color-border); text-align: center; }
.footer-bottom p { font-size: 0.85rem; color: var(--color-text-dim); }

/* Responsive */
@media (max-width: 1024px) {
    .services-grid, .process-grid, .values-grid { grid-template-columns: repeat(2, 1fr); }
    .about-intro, .why-us-grid, .contact-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: repeat(2, 1fr); }
    .service-block { grid-template-columns: 1fr; }
    .service-block-header { flex-direction: row; justify-content: flex-start; }
}

@media (max-width: 768px) {
    .nav-links { position: fixed; top: 0; right: -100%; width: 100%; height: 100vh; background: var(--color-bg); flex-direction: column; justify-content: center; gap: var(--spacing-lg); transition: var(--transition-base); }
    .nav-links.active { right: 0; }
    .nav-links a { font-size: 1.5rem; }
    .nav-toggle { display: flex; z-index: 1001; }
    .nav-toggle.active span:first-child { transform: rotate(45deg) translate(6px, 6px); }
    .nav-toggle.active span:last-child { transform: rotate(-45deg); }
    .hero-cta { flex-direction: column; }
    .hero-scroll { display: none; }
    .services-grid, .process-grid, .values-grid, .faq-grid, .service-features { grid-template-columns: 1fr; }
    .stats-grid { flex-direction: column; gap: var(--spacing-lg); }
    .stat-divider { width: 60px; height: 1px; }
    .form-row { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; gap: var(--spacing-xl); }
}

@media (max-width: 480px) {
    .stat-number { font-size: 2.5rem; }
    .hero-title { font-size: 2.5rem; }
    .page-title, .section-title { font-size: 2rem; }
}