/* ===================================
   WaveLab - Interactive Dark Portfolio
   =================================== */

:root {
    --bg: #000000;
    --bg-card: #0a0a0a;
    --bg-elevated: #111111;
    --border: #1a1a1a;
    --border-hover: #333333;

    --text-primary: #ffffff;
    --text-secondary: #888888;
    --text-muted: #555555;

    --accent: #ffffff;
    --accent-dim: rgba(255, 255, 255, 0.1);
    --accent-purple: #a855f7;
    --accent-blue: #3b82f6;

    --gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-hover: linear-gradient(135deg, #764ba2 0%, #667eea 100%);

    --font-sans: 'Inter', 'Noto Sans KR', -apple-system, BlinkMacSystemFont, sans-serif;

    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Reset */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
}

body {
    font-family: var(--font-sans);
    background: var(--bg);
    color: var(--text-secondary);
    line-height: 1.6;
    overflow-x: hidden;
}

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

ul { list-style: none; }
img { max-width: 100%; height: auto; }

.container {
    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* ===================================
   Cursor Glow Effect
   =================================== */
.cursor-glow {
    position: fixed;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(139, 92, 246, 0.15) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
    z-index: 9999;
    transform: translate(-50%, -50%);
    transition: opacity 0.3s ease;
    opacity: 0;
}

body:hover .cursor-glow {
    opacity: 1;
}

/* ===================================
   Navigation
   =================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 1.5rem 0;
    background: transparent;
    transition: var(--transition);
}

.navbar.scrolled {
    background: rgba(0, 0, 0, 0.9);
    backdrop-filter: blur(20px);
    padding: 1rem 0;
    border-bottom: 1px solid var(--border);
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: -0.03em;
    color: var(--text-primary);
}

.logo-wave { color: var(--text-primary); }
.logo-lab { color: var(--text-secondary); }

.nav-menu {
    display: flex;
    gap: 2.5rem;
}

.nav-link {
    font-size: 0.875rem;
    font-weight: 400;
    color: var(--text-muted);
    letter-spacing: 0.02em;
    position: relative;
}

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

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

.nav-link:hover,
.nav-link.active {
    color: var(--text-primary);
}

.nav-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}

.hamburger {
    display: block;
    width: 20px;
    height: 1.5px;
    background: var(--text-primary);
    position: relative;
    transition: var(--transition);
}

.hamburger::before,
.hamburger::after {
    content: '';
    position: absolute;
    width: 20px;
    height: 1.5px;
    background: var(--text-primary);
    transition: var(--transition);
}

.hamburger::before { top: -6px; }
.hamburger::after { bottom: -6px; }

/* ===================================
   Hero Section
   =================================== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    padding: 8rem 0;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    z-index: -1;
}

.hero-gradient-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.5;
    animation: float 20s ease-in-out infinite;
}

.orb-1 {
    top: 10%;
    right: 10%;
    width: 500px;
    height: 500px;
    background: linear-gradient(135deg, rgba(139, 92, 246, 0.3) 0%, rgba(59, 130, 246, 0.2) 100%);
}

.orb-2 {
    bottom: 10%;
    left: 5%;
    width: 400px;
    height: 400px;
    background: linear-gradient(135deg, rgba(236, 72, 153, 0.2) 0%, rgba(139, 92, 246, 0.1) 100%);
    animation-delay: -10s;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(30px, -30px) scale(1.05); }
    66% { transform: translate(-20px, 20px) scale(0.95); }
}

.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 20%, transparent 70%);
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
    animation: fadeInUp 1s ease;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(40px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: var(--accent-dim);
    border: 1px solid var(--border);
    border-radius: 100px;
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

.badge-dot {
    width: 6px;
    height: 6px;
    background: #22c55e;
    border-radius: 50%;
    animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(1.2); }
}

.hero-title {
    font-size: clamp(2.5rem, 7vw, 4.5rem);
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.1;
    letter-spacing: -0.03em;
    margin-bottom: 1.5rem;
}

.gradient-text {
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-description {
    font-size: 1.125rem;
    color: var(--text-muted);
    line-height: 1.8;
    margin-bottom: 2.5rem;
}

.hero-description strong {
    color: var(--text-primary);
}

.highlight-month {
    font-size: 1.5rem;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-highlight {
    display: inline-block;
    margin-top: 0.75rem;
    padding: 0.5rem 1rem;
    background: rgba(139, 92, 246, 0.15);
    border: 1px solid rgba(139, 92, 246, 0.3);
    border-radius: 8px;
    color: #a78bfa;
    font-size: 0.875rem;
    font-weight: 500;
}

.btn-telegram {
    background: linear-gradient(135deg, #0088cc 0%, #00a8e8 100%) !important;
    color: white !important;
}

.btn-telegram:hover {
    box-shadow: 0 10px 30px rgba(0, 136, 204, 0.4);
    transform: translateY(-2px);
}

.hero-buttons {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 4rem;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 2rem;
    font-size: 0.875rem;
    font-weight: 500;
    border-radius: 100px;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    position: relative;
    overflow: hidden;
}

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

.btn-primary::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--gradient);
    opacity: 0;
    transition: var(--transition);
}

.btn-primary:hover::before {
    opacity: 1;
}

.btn-primary:hover {
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 10px 40px rgba(139, 92, 246, 0.3);
}

.btn-primary span,
.btn-primary i {
    position: relative;
    z-index: 1;
}

.btn-secondary {
    background: transparent;
    color: var(--text-secondary);
    border: 1px solid var(--border);
}

.btn-secondary:hover {
    border-color: var(--text-secondary);
    color: var(--text-primary);
    background: var(--accent-dim);
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 4rem;
}

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

.stat-value {
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: 0.125rem;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -0.02em;
    line-height: 1;
}

.stat-suffix {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
}

.stat-label {
    display: block;
    font-size: 0.8125rem;
    color: var(--text-muted);
    margin-top: 0.5rem;
}

/* Scroll Hint */
.scroll-hint {
    position: absolute;
    bottom: 2rem;
    right: 2rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-muted);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.scroll-line {
    width: 1px;
    height: 60px;
    background: linear-gradient(to bottom, var(--text-muted), transparent);
    animation: scroll-line 2s ease-in-out infinite;
}

@keyframes scroll-line {
    0%, 100% { transform: scaleY(1); opacity: 1; }
    50% { transform: scaleY(0.5); opacity: 0.5; }
}

/* ===================================
   Section Styles
   =================================== */
section {
    padding: 8rem 0;
}

.section-header {
    margin-bottom: 4rem;
}

.section-badge {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--accent-purple);
    text-transform: uppercase;
    letter-spacing: 0.15em;
    margin-bottom: 1rem;
}

.section-title {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -0.03em;
    margin-bottom: 1rem;
}

.section-description {
    font-size: 1rem;
    color: var(--text-muted);
    max-width: 500px;
}

/* ===================================
   Projects Section
   =================================== */
.projects {
    background: var(--bg);
    padding: 6rem 0 10rem;
}

.project-filters {
    display: flex;
    gap: 0.75rem;
    margin-bottom: 3rem;
    flex-wrap: wrap;
}

.filter-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.25rem;
    background: transparent;
    border: 1px solid var(--border);
    border-radius: 100px;
    color: var(--text-muted);
    font-size: 0.8125rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
}

.filter-icon {
    font-size: 0.875rem;
    opacity: 0.7;
}

.filter-btn:hover {
    border-color: var(--text-muted);
    color: var(--text-secondary);
    background: var(--accent-dim);
}

.filter-btn.active {
    background: var(--gradient);
    border-color: transparent;
    color: white;
}

.filter-btn.active .filter-icon {
    opacity: 1;
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.project-card {
    background: var(--bg-card);
    border-radius: 20px;
    overflow: hidden;
    border: 1px solid var(--border);
    transition: var(--transition-slow);
    cursor: pointer;
    position: relative;
}

.project-card:hover {
    border-color: rgba(139, 92, 246, 0.3);
    transform: translateY(-8px);
    box-shadow: 0 20px 60px rgba(139, 92, 246, 0.15);
}

.project-image {
    position: relative;
    aspect-ratio: 16/10;
    overflow: hidden;
}

.project-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--bg-elevated) 0%, var(--bg-card) 100%);
    font-size: 3.5rem;
    color: var(--text-muted);
    transition: var(--transition-slow);
}

.project-card:hover .project-placeholder {
    transform: scale(1.1);
    color: var(--accent-purple);
}

.project-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.95) 0%, rgba(0, 0, 0, 0.5) 50%, transparent 100%);
    display: flex;
    align-items: flex-end;
    padding: 2rem;
    opacity: 0;
    transition: var(--transition);
}

.project-card:hover .project-overlay {
    opacity: 1;
}

.project-overlay-content {
    transform: translateY(20px);
    transition: var(--transition);
}

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

.project-category {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background: var(--gradient);
    border-radius: 100px;
    font-size: 0.6875rem;
    font-weight: 600;
    color: white;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.75rem;
}

.project-overlay h4 {
    font-size: 1.25rem;
    font-weight: 700;
    color: white;
    margin-bottom: 0.5rem;
}

.project-overlay p {
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.5;
    margin-bottom: 1rem;
}

.project-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.625rem 1rem;
    background: white;
    border-radius: 100px;
    color: var(--bg);
    font-size: 0.8125rem;
    font-weight: 600;
    transition: var(--transition);
}

.project-btn:hover {
    background: var(--gradient);
    color: white;
    transform: scale(1.05);
}

.project-number {
    position: absolute;
    top: 1rem;
    right: 1rem;
    font-size: 3rem;
    font-weight: 800;
    color: rgba(255, 255, 255, 0.05);
    line-height: 1;
    transition: var(--transition);
}

.project-card:hover .project-number {
    color: rgba(139, 92, 246, 0.2);
}

.project-info {
    padding: 1.5rem;
}

.project-tags {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1rem;
    flex-wrap: wrap;
}

.tag {
    padding: 0.25rem 0.75rem;
    background: var(--accent-dim);
    border-radius: 100px;
    font-size: 0.6875rem;
    font-weight: 500;
    color: var(--text-secondary);
    transition: var(--transition);
}

.project-card:hover .tag {
    background: rgba(139, 92, 246, 0.15);
    color: var(--accent-purple);
}

.project-info h3 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.375rem;
}

.project-info p {
    font-size: 0.875rem;
    color: var(--text-muted);
}

.projects-cta {
    text-align: center;
    margin-top: 4rem;
}

/* ===================================
   Services Section
   =================================== */
.services {
    background: var(--bg-card);
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1px;
    background: var(--border);
    border: 1px solid var(--border);
    border-radius: 20px;
    overflow: hidden;
}

.service-card {
    background: var(--bg);
    padding: 2.5rem;
    transition: var(--transition);
    position: relative;
}

.service-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--gradient);
    opacity: 0;
    transition: var(--transition);
}

.service-card:hover::before {
    opacity: 0.05;
}

.service-card:hover {
    background: var(--bg-elevated);
}

.service-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient);
    border-radius: 14px;
    font-size: 1.5rem;
    color: white;
    margin-bottom: 1.5rem;
    transition: var(--transition);
    position: relative;
}

.service-card:hover .service-icon {
    transform: scale(1.1) rotate(-5deg);
}

.service-card h3 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.75rem;
    position: relative;
}

.service-card > p {
    color: var(--text-muted);
    font-size: 0.875rem;
    line-height: 1.6;
    margin-bottom: 1.5rem;
    position: relative;
}

.service-features {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    position: relative;
}

.service-features li {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.8125rem;
    color: var(--text-secondary);
}

.service-features li::before {
    content: '';
    width: 4px;
    height: 4px;
    background: var(--accent-purple);
    border-radius: 50%;
}

/* ===================================
   Tech Stack
   =================================== */
.tech-stack {
    padding: 5rem 0;
    overflow: hidden;
}

.tech-carousel {
    margin-top: 2rem;
    mask-image: linear-gradient(to right, transparent, black 10%, black 90%, transparent);
}

.tech-track {
    display: flex;
    gap: 4rem;
    animation: scroll-tech 40s linear infinite;
}

.tech-track:hover {
    animation-play-state: paused;
}

@keyframes scroll-tech {
    0% { transform: translateX(0); }
    100% { transform: translateX(-50%); }
}

.tech-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.75rem;
    min-width: 80px;
    opacity: 0.4;
    transition: var(--transition);
    cursor: pointer;
}

.tech-item:hover {
    opacity: 1;
    transform: scale(1.1);
}

.tech-item i {
    font-size: 2.5rem;
    color: var(--text-primary);
}

.tech-item span {
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* ===================================
   About Section
   =================================== */
.about {
    background: var(--bg);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 6rem;
    align-items: center;
}

.about-content .section-title {
    margin-bottom: 1.5rem;
}

.about-text {
    color: var(--text-muted);
    margin-bottom: 1.5rem;
    font-size: 1rem;
    line-height: 1.8;
}

.about-values {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    margin-top: 2.5rem;
}

.value-item {
    display: flex;
    gap: 1rem;
    align-items: flex-start;
    padding: 1rem;
    border-radius: 12px;
    transition: var(--transition);
}

.value-item:hover {
    background: var(--accent-dim);
}

.value-icon {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient);
    border-radius: 10px;
    color: white;
    font-size: 1rem;
    flex-shrink: 0;
}

.value-content h4 {
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

.value-content p {
    font-size: 0.8125rem;
    color: var(--text-muted);
}

/* Code Window */
.visual-card {
    position: relative;
}

.code-window {
    background: var(--bg-elevated);
    border-radius: 16px;
    overflow: hidden;
    border: 1px solid var(--border);
    transition: var(--transition);
}

.code-window:hover {
    border-color: rgba(139, 92, 246, 0.3);
    box-shadow: 0 20px 60px rgba(139, 92, 246, 0.1);
}

.window-header {
    display: flex;
    gap: 0.5rem;
    padding: 1rem 1.25rem;
    background: var(--bg-card);
    border-bottom: 1px solid var(--border);
}

.dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
}

.dot.red { background: #ff5f57; }
.dot.yellow { background: #febc2e; }
.dot.green { background: #28c840; }

.code-content {
    padding: 1.5rem;
}

.code-content pre {
    font-family: 'JetBrains Mono', 'Fira Code', monospace;
    font-size: 0.8125rem;
    line-height: 1.8;
}

.code-content code { color: var(--text-secondary); }
.keyword { color: #c792ea; }
.property { color: #82aaff; }
.string { color: #c3e88d; }
.function { color: #89ddff; }

/* ===================================
   Contact Section
   =================================== */
.contact {
    background: var(--bg-card);
    border-top: 1px solid var(--border);
    padding: 8rem 0;
}

.contact-centered {
    max-width: 600px;
    margin: 0 auto;
    text-align: center;
}

.contact-centered .section-title {
    margin-bottom: 1rem;
}

.contact-description {
    font-size: 1.125rem;
    color: var(--text-muted);
    line-height: 1.8;
    margin-bottom: 1.5rem;
}

.source-sale-notice {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.875rem 1.5rem;
    background: linear-gradient(135deg, rgba(139, 92, 246, 0.15) 0%, rgba(59, 130, 246, 0.15) 100%);
    border: 1px solid rgba(139, 92, 246, 0.3);
    border-radius: 100px;
    margin-bottom: 2rem;
}

.source-sale-notice i {
    color: var(--accent-purple);
    font-size: 1rem;
}

.source-sale-notice span {
    font-size: 0.9375rem;
    color: var(--text-secondary);
}

.source-sale-notice strong {
    color: var(--accent-purple);
}

/* QR Code Section */
.qr-code-section {
    margin-bottom: 2rem;
}

.qr-code-link {
    display: inline-block;
    transition: var(--transition);
}

.qr-code-link:hover {
    transform: scale(1.02);
}

.qr-code-img {
    width: 280px;
    height: auto;
    border-radius: 20px;
    box-shadow: 0 10px 40px rgba(139, 92, 246, 0.2);
}

.qr-code-text {
    margin-top: 1rem;
    font-size: 0.875rem;
    color: var(--text-muted);
}

.telegram-cta {
    display: flex;
    align-items: center;
    gap: 1.25rem;
    padding: 1.5rem 2rem;
    background: linear-gradient(135deg, #0088cc 0%, #00a8e8 100%);
    border-radius: 20px;
    cursor: pointer;
    transition: var(--transition);
    margin-bottom: 2rem;
}

.telegram-cta:hover {
    transform: translateY(-4px);
    box-shadow: 0 20px 60px rgba(0, 136, 204, 0.4);
}

.telegram-cta-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 14px;
    flex-shrink: 0;
}

.telegram-cta-icon svg {
    width: 28px;
    height: 28px;
    color: white;
}

.telegram-cta-content {
    flex: 1;
    text-align: left;
}

.telegram-cta-title {
    display: block;
    font-size: 1.125rem;
    font-weight: 600;
    color: white;
    margin-bottom: 0.25rem;
}

.telegram-cta-sub {
    display: block;
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.8);
}

.telegram-cta-arrow {
    font-size: 1.25rem;
    color: white;
    transition: var(--transition);
}

.telegram-cta:hover .telegram-cta-arrow {
    transform: translateX(4px);
}

.business-reg {
    font-size: 0.8125rem;
    color: var(--text-muted);
}

/* ===================================
   Footer
   =================================== */
.footer {
    background: var(--bg);
    padding: 4rem 0 2rem;
    border-top: 1px solid var(--border);
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 4rem;
    margin-bottom: 4rem;
}

.footer-logo {
    font-size: 1.25rem;
    font-weight: 700;
    display: inline-block;
    margin-bottom: 1rem;
}

.footer-brand p {
    color: var(--text-muted);
    font-size: 0.875rem;
    line-height: 1.7;
}

.footer-links h4,
.footer-services h4,
.footer-social h4 {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 1.25rem;
}

.footer-links ul,
.footer-services ul {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.footer-links a,
.footer-services li {
    color: var(--text-muted);
    font-size: 0.875rem;
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--text-primary);
    transform: translateX(4px);
}

.social-links {
    display: flex;
    gap: 0.75rem;
}

.social-links a {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--accent-dim);
    border-radius: 10px;
    color: var(--text-muted);
    font-size: 1rem;
    transition: var(--transition);
}

.social-links a:hover {
    background: var(--gradient);
    color: white;
    transform: translateY(-4px);
}

.footer-bottom {
    padding-top: 2rem;
    border-top: 1px solid var(--border);
    text-align: center;
}

.footer-bottom p {
    font-size: 0.8125rem;
    color: var(--text-muted);
}

.business-info {
    margin-top: 0.5rem;
}

/* ===================================
   Telegram Floating Button
   =================================== */
.telegram-float {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    display: flex;
    align-items: center;
    gap: 0.625rem;
    padding: 0.875rem 1.25rem;
    background: linear-gradient(135deg, #0088cc 0%, #00a8e8 100%);
    border-radius: 100px;
    color: #fff;
    font-weight: 500;
    font-size: 0.875rem;
    cursor: pointer;
    box-shadow: 0 4px 24px rgba(0, 136, 204, 0.4);
    z-index: 1000;
    transition: var(--transition);
}

.telegram-float:hover {
    transform: translateY(-4px) scale(1.05);
    box-shadow: 0 8px 32px rgba(0, 136, 204, 0.5);
}

.telegram-icon {
    width: 20px;
    height: 20px;
}

.telegram-pulse { display: none; }

/* ===================================
   Responsive
   =================================== */
@media (max-width: 1200px) {
    .projects-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 1024px) {
    .about-grid {
        grid-template-columns: 1fr;
        gap: 3rem;
    }

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

    .footer-content {
        grid-template-columns: repeat(2, 1fr);
    }

    .cursor-glow {
        display: none;
    }
}

@media (max-width: 768px) {
    .container {
        padding: 0 1.5rem;
    }

    section {
        padding: 5rem 0;
    }

    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 100%;
        height: 100vh;
        background: var(--bg);
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: 2rem;
        transition: var(--transition);
    }

    .nav-menu.active {
        right: 0;
    }

    .nav-link {
        font-size: 1.5rem;
    }

    .nav-toggle {
        display: block;
        z-index: 1001;
    }

    .nav-toggle.active .hamburger {
        background: transparent;
    }

    .nav-toggle.active .hamburger::before {
        top: 0;
        transform: rotate(45deg);
    }

    .nav-toggle.active .hamburger::after {
        bottom: 0;
        transform: rotate(-45deg);
    }

    .hero {
        padding: 6rem 0 4rem;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-description {
        font-size: 1rem;
    }

    .hero-stats {
        flex-wrap: wrap;
        gap: 2rem;
        justify-content: center;
    }

    .scroll-hint {
        display: none;
    }

    .projects-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1.5rem;
    }

    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .project-card {
        min-height: auto;
    }

    .project-filters {
        justify-content: center;
        flex-wrap: wrap;
        gap: 0.5rem;
    }

    .section-header {
        margin-bottom: 2rem;
    }

    .section-title {
        font-size: 1.75rem;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 2rem;
        text-align: center;
    }

    .social-links {
        justify-content: center;
    }

    .telegram-float {
        bottom: 1.5rem;
        right: 1.5rem;
    }

    .telegram-text {
        display: none;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }

    .hero-buttons {
        flex-direction: column;
        gap: 0.75rem;
    }

    .btn {
        width: 100%;
        justify-content: center;
        padding: 0.875rem 1.5rem;
    }

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

    .project-info h3 {
        font-size: 1rem;
    }

    .project-info p {
        font-size: 0.8125rem;
    }

    .project-tags .tag {
        font-size: 0.625rem;
        padding: 0.25rem 0.5rem;
    }

    .hero-stats {
        flex-direction: row;
        flex-wrap: wrap;
        justify-content: center;
        gap: 1.5rem;
    }

    .stat-item {
        min-width: 80px;
    }

    .stat-number {
        font-size: 1.75rem;
    }

    .stat-suffix {
        font-size: 1.5rem;
    }

    .hero-highlight {
        font-size: 0.75rem;
        padding: 0.375rem 0.75rem;
    }

    .filter-btn {
        padding: 0.5rem 0.75rem;
        font-size: 0.6875rem;
    }

    .filter-btn .filter-icon {
        display: none;
    }

    .project-filters {
        gap: 0.375rem;
        flex-wrap: wrap;
        justify-content: center;
    }

    .section-title {
        font-size: 1.5rem;
        line-height: 1.3;
    }

    .section-description {
        font-size: 0.875rem;
    }

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

    .service-card {
        padding: 1.5rem;
    }

    .about-values {
        gap: 1rem;
    }

    .value-item {
        padding: 1rem;
    }

    .source-sale-notice {
        padding: 0.75rem 1rem;
        gap: 0.5rem;
    }

    .source-sale-notice span {
        font-size: 0.8125rem;
    }

    .qr-code-img {
        width: 220px;
    }

    .telegram-cta {
        flex-direction: column;
        text-align: center;
        padding: 1.25rem;
    }

    .telegram-cta-content {
        text-align: center;
    }

    .telegram-cta-arrow {
        display: none;
    }
}

/* ===================================
   Animations
   =================================== */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg);
}

::-webkit-scrollbar-thumb {
    background: var(--border-hover);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}

::selection {
    background: rgba(139, 92, 246, 0.3);
    color: var(--text-primary);
}

/* ===================================
   Project Modal
   =================================== */
.project-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 10000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

.project-modal.active {
    opacity: 1;
    visibility: visible;
}

.modal-backdrop {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.85);
    backdrop-filter: blur(10px);
}

.modal-container {
    position: relative;
    width: 90%;
    max-width: 600px;
    max-height: 90vh;
    background: var(--bg-card);
    border-radius: 24px;
    border: 1px solid var(--border);
    overflow: hidden;
    transform: scale(0.9) translateY(20px);
    transition: transform 0.3s ease;
}

.project-modal.active .modal-container {
    transform: scale(1) translateY(0);
}

.modal-close {
    position: absolute;
    top: 1.25rem;
    right: 1.25rem;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--accent-dim);
    border: 1px solid var(--border);
    border-radius: 50%;
    color: var(--text-secondary);
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition);
    z-index: 10;
}

.modal-close:hover {
    background: var(--border-hover);
    color: var(--text-primary);
    transform: rotate(90deg);
}

.modal-content {
    padding: 2.5rem;
    overflow-y: auto;
    max-height: 90vh;
}

.modal-header {
    margin-bottom: 2rem;
    padding-right: 3rem;
}

.modal-category {
    display: inline-block;
    padding: 0.375rem 0.875rem;
    background: var(--gradient);
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    color: white;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 1rem;
}

.modal-title {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.3;
    margin-bottom: 0.5rem;
}

.modal-subtitle {
    font-size: 1rem;
    color: var(--text-muted);
}

.modal-body {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.modal-description {
    font-size: 1rem;
    color: var(--text-secondary);
    line-height: 1.8;
    padding: 1.5rem;
    background: var(--accent-dim);
    border-radius: 16px;
    border-left: 4px solid var(--primary);
}

.modal-features h4,
.modal-tech h4 {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.modal-features h4 i,
.modal-tech h4 i {
    color: var(--primary);
}

.feature-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.75rem;
}

.feature-list li {
    display: flex;
    align-items: flex-start;
    gap: 0.5rem;
    font-size: 0.875rem;
    color: var(--text-secondary);
    padding: 0.75rem 1rem;
    background: var(--accent-dim);
    border-radius: 10px;
}

.feature-list li::before {
    content: '✓';
    color: #10b981;
    font-weight: 600;
    flex-shrink: 0;
}

.tech-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.tech-tags .tag {
    padding: 0.5rem 1rem;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--text-secondary);
    transition: var(--transition);
}

.tech-tags .tag:hover {
    border-color: var(--primary);
    color: var(--primary);
}

.modal-footer {
    margin-top: 2rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border);
    display: flex;
    justify-content: center;
}

.modal-footer .btn {
    min-width: 200px;
}

@media (max-width: 640px) {
    .modal-container {
        width: 95%;
        border-radius: 20px;
    }

    .modal-content {
        padding: 2rem 1.5rem;
    }

    .modal-title {
        font-size: 1.5rem;
    }

    .feature-list {
        grid-template-columns: 1fr;
    }
}