/* ==========================================
   TINROBOT v2 - Main Stylesheet
   CheezLAB 중심 리뉴얼 버전
   ========================================== */

/* Reset & Variables */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Colors - Dark Theme (Default) */
    --primary: #FFFFFF;
    --accent: #FFD93D;
    --accent-light: #FFE566;
    --accent-dark: #E6C235;
    --accent-secondary: #00B4D8;
    --bg: #0A0A0F;
    --bg-secondary: #12121A;
    --surface: #1A1A24;
    --surface-hover: #22222E;
    --border: rgba(255, 255, 255, 0.08);
    --border-accent: rgba(255, 215, 61, 0.3);
    --text-primary: #FFFFFF;
    --text-secondary: #A0A0B0;
    --text-muted: #6B6B7B;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    --spacing-3xl: 6rem;
    
    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.2);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.3);
    --shadow-lg: 0 8px 24px rgba(0,0,0,0.4);
    --shadow-accent: 0 4px 20px rgba(255, 215, 61, 0.2);
    
    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* Light Theme */
:root[data-theme="light"] {
    --primary: #0A0A0F;
    --bg: #FAFAFA;
    --bg-secondary: #FFFFFF;
    --surface: #FFFFFF;
    --surface-hover: #F5F5F5;
    --border: rgba(0, 0, 0, 0.1);
    --border-accent: rgba(200, 150, 0, 0.4);
    --text-primary: #1A1A24;
    --text-secondary: #4A4A5A;
    --text-muted: #7A7A8A;
    --accent: #D4A000;
    --accent-light: #FFD93D;
    --accent-dark: #B8860B;
    --accent-secondary: #0096B4;
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.06);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
    --shadow-lg: 0 8px 24px rgba(0,0,0,0.12);
    --shadow-accent: 0 4px 20px rgba(212, 160, 0, 0.15);
}

/* Base Styles */
html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Noto Sans KR', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg);
    color: var(--text-primary);
    line-height: 1.7;
    font-size: 16px;
    font-weight: 400;
    -webkit-font-smoothing: antialiased;
    transition: background var(--transition-normal), color var(--transition-normal);
}

/* Scroll Progress */
.scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    width: 0%;
    height: 3px;
    background: linear-gradient(90deg, var(--accent), var(--accent-light));
    z-index: 9999;
    transition: width 0.1s ease-out;
}

/* ==========================================
   Navigation
   ========================================== */
nav {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(10, 10, 15, 0.8);
    backdrop-filter: blur(20px);
    z-index: 1000;
    padding: 1rem 0;
    transition: all var(--transition-normal);
    border-bottom: 1px solid transparent;
}

nav.scrolled {
    background: rgba(10, 10, 15, 0.95);
    border-bottom-color: var(--border);
}

:root[data-theme="light"] nav {
    background: rgba(255, 255, 255, 0.85);
}

:root[data-theme="light"] nav.scrolled {
    background: rgba(255, 255, 255, 0.98);
}

/* Light Theme - Logo Switch */
:root[data-theme="light"] .logo-img-dark,
:root[data-theme="light"] .cheezlab-logo-img-dark,
:root[data-theme="light"] .service-icon-img-dark {
    display: none;
}

:root[data-theme="light"] .logo-img-light,
:root[data-theme="light"] .cheezlab-logo-img-light,
:root[data-theme="light"] .service-icon-img-light {
    display: block;
}

.logo-img-light,
.cheezlab-logo-img-light,
.service-icon-img-light {
    display: none;
}

/* Light Theme - Service Cards */
:root[data-theme="light"] .service-card {
    background: var(--surface);
    border: 1px solid var(--border);
    box-shadow: var(--shadow-md);
}

:root[data-theme="light"] .service-card:hover {
    box-shadow: var(--shadow-lg);
    border-color: var(--accent);
}

:root[data-theme="light"] .service-card.featured {
    border-color: var(--accent);
    box-shadow: var(--shadow-accent);
}

/* Light Theme - Tech Section */
:root[data-theme="light"] .tech-showcase {
    background: var(--surface);
    box-shadow: var(--shadow-md);
}

:root[data-theme="light"] .tech-feature {
    background: var(--bg);
    border: 1px solid var(--border);
}

/* Light Theme - Hero */
:root[data-theme="light"] .hero-bg {
    background: linear-gradient(135deg, #F0F0F5 0%, #FAFAFA 50%, #F5F5FA 100%);
}

:root[data-theme="light"] .hero-gradient {
    background: radial-gradient(ellipse at center, rgba(212, 160, 0, 0.1) 0%, transparent 70%);
}

/* Light Theme - Engine Synergy */
:root[data-theme="light"] .engine-inner {
    background: linear-gradient(135deg, #FFD93D 0%, #E6C235 100%);
    box-shadow:
        0 0 60px rgba(212, 160, 0, 0.4),
        0 0 100px rgba(212, 160, 0, 0.2),
        inset 0 -8px 20px rgba(0, 0, 0, 0.1);
}

:root[data-theme="light"] .engine-glow {
    background: radial-gradient(circle, rgba(212, 160, 0, 0.3) 0%, rgba(212, 160, 0, 0.1) 50%, transparent 70%);
}

:root[data-theme="light"] .app-node {
    background: var(--surface);
    border-color: var(--border);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}

:root[data-theme="light"] .app-node:hover {
    border-color: var(--accent);
    box-shadow:
        0 0 20px rgba(212, 160, 0, 0.2),
        0 8px 30px rgba(0, 0, 0, 0.1);
}

:root[data-theme="light"] .app-node.active {
    border-color: var(--accent);
    background: rgba(212, 160, 0, 0.08);
}

:root[data-theme="light"] .app-icon {
    background: var(--bg);
    border-color: var(--border);
}

:root[data-theme="light"] .app-icon svg {
    stroke: var(--accent);
}

:root[data-theme="light"] .detail-panel {
    background: var(--surface);
    border-color: var(--accent);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.15);
}

:root[data-theme="light"] .detail-features span {
    background: rgba(212, 160, 0, 0.1);
    border-color: rgba(212, 160, 0, 0.25);
    color: var(--accent-dark);
}

/* Light Theme - Roadmap */
:root[data-theme="light"] .roadmap-timeline::before {
    background: #E8E0D0;
}

:root[data-theme="light"] .marker-dot {
    background: #E8E0D0;
    border-color: var(--bg);
    box-shadow: 0 0 0 2px #E8E0D0;
}

:root[data-theme="light"] .roadmap-phase.active .marker-dot {
    background: #D4A000;
    box-shadow: 0 0 0 2px rgba(212, 160, 0, 0.4);
}

:root[data-theme="light"] .marker-pulse {
    background: rgba(212, 160, 0, 0.3);
}

:root[data-theme="light"] .roadmap-phase.active .phase-label {
    color: #D4A000;
}

/* Light Theme - Studio */
:root[data-theme="light"] .studio-service {
    background: var(--surface);
    border: 1px solid var(--border);
}

:root[data-theme="light"] .client-logo {
    background: var(--surface);
    border: 1px solid var(--border);
    color: var(--text-secondary);
}

/* Light Theme - Contact */
:root[data-theme="light"] .contact-form input,
:root[data-theme="light"] .contact-form select,
:root[data-theme="light"] .contact-form textarea {
    background: var(--surface);
    border: 1px solid var(--border);
}

/* Light Theme - Footer */
:root[data-theme="light"] .footer {
    background: #1A1A24;
    color: #FFFFFF;
}

:root[data-theme="light"] .footer a {
    color: #A0A0B0;
}

:root[data-theme="light"] .footer a:hover {
    color: #FFD93D;
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 700;
    font-size: 1.5rem;
    letter-spacing: 0.05em;
    font-family: 'Work Sans', sans-serif;
}

.logo-img {
    height: 40px;
    width: auto;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 2rem;
    list-style: none;
}

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    transition: color var(--transition-fast);
    position: relative;
}

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

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

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

.nav-highlight {
    padding: 0.5rem 1rem;
    background: linear-gradient(135deg, rgba(255, 215, 61, 0.15), rgba(255, 215, 61, 0.05));
    border: 1px solid var(--border-accent);
    border-radius: 8px;
    color: var(--accent) !important;
}

.nav-highlight:hover {
    background: linear-gradient(135deg, rgba(255, 215, 61, 0.25), rgba(255, 215, 61, 0.1));
}

.nav-highlight::after {
    display: none;
}

/* Theme Toggle */
.nav-theme-item {
    display: flex;
    align-items: center;
}

.theme-toggle {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: transparent;
    border: 1px solid var(--border);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

.theme-toggle:hover {
    border-color: var(--accent);
    background: rgba(255, 215, 61, 0.1);
}

.theme-toggle svg {
    width: 20px;
    height: 20px;
    stroke: var(--text-primary);
}

.theme-icon-light { display: none; }
.theme-icon-dark { display: block; }

:root[data-theme="light"] .theme-icon-light { display: block; }
:root[data-theme="light"] .theme-icon-dark { display: none; }

/* Mobile Menu */
.mobile-menu-toggle {
    display: none;
    width: 44px;
    height: 44px;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: transparent;
    cursor: pointer;
    position: relative;
}

.mobile-menu-toggle span {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    width: 20px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: all var(--transition-normal);
}

.mobile-menu-toggle span:nth-child(1) { top: 14px; }
.mobile-menu-toggle span:nth-child(2) { top: 21px; }
.mobile-menu-toggle span:nth-child(3) { top: 28px; }

.mobile-menu-toggle[aria-expanded="true"] span:nth-child(1) {
    top: 21px;
    transform: translateX(-50%) rotate(45deg);
}

.mobile-menu-toggle[aria-expanded="true"] span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-toggle[aria-expanded="true"] span:nth-child(3) {
    top: 21px;
    transform: translateX(-50%) rotate(-45deg);
}

/* ==========================================
   Hero Section
   ========================================== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    padding: 8rem 2rem 4rem;
}

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

.hero-gradient {
    position: absolute;
    inset: 0;
    background: 
        radial-gradient(ellipse at 20% 20%, rgba(255, 215, 61, 0.08) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 80%, rgba(0, 180, 216, 0.06) 0%, transparent 50%),
        radial-gradient(ellipse at 50% 50%, rgba(255, 215, 61, 0.03) 0%, transparent 70%);
}

.hero-particles {
    position: absolute;
    inset: 0;
    opacity: 0.5;
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 900px;
    text-align: center;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: linear-gradient(135deg, rgba(255, 215, 61, 0.15), rgba(255, 215, 61, 0.05));
    border: 1px solid var(--border-accent);
    border-radius: 50px;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--accent);
    margin-bottom: var(--spacing-lg);
}

.badge-icon {
    font-size: 1.2rem;
}

.badge-icon-img {
    width: 24px;
    height: 24px;
    object-fit: contain;
}

.hero-title {
    font-size: clamp(2.5rem, 6vw, 4rem);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--spacing-lg);
}

.hero-title-line {
    display: block;
    color: var(--text-primary);
}

.hero-title-accent {
    display: block;
    background: linear-gradient(135deg, var(--accent), var(--accent-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: var(--spacing-xl);
}

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

.hero-cta {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    margin-bottom: var(--spacing-2xl);
    flex-wrap: wrap;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: var(--spacing-2xl);
}

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

.stat-value {
    display: block;
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-primary);
    font-family: 'Work Sans', sans-serif;
}

.stat-plus {
    color: var(--accent);
}

.stat-label {
    font-size: 0.85rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

/* Scroll Indicator */
.scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    width: 24px;
    height: 40px;
    border: 2px solid var(--border);
    border-radius: 12px;
    display: flex;
    justify-content: center;
    padding-top: 8px;
    animation: float 2s ease-in-out infinite;
}

.scroll-indicator::before {
    content: '';
    width: 4px;
    height: 8px;
    background: var(--accent);
    border-radius: 2px;
    animation: scroll-down 2s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateX(-50%) translateY(0); }
    50% { transform: translateX(-50%) translateY(8px); }
}

@keyframes scroll-down {
    0% { opacity: 0; transform: translateY(0); }
    50% { opacity: 1; }
    100% { opacity: 0; transform: translateY(12px); }
}

/* ==========================================
   Buttons
   ========================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.875rem 2rem;
    border-radius: 10px;
    font-weight: 600;
    font-size: 1rem;
    text-decoration: none;
    cursor: pointer;
    transition: all var(--transition-normal);
    border: none;
    font-family: inherit;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent), var(--accent-light));
    color: #000;
    box-shadow: var(--shadow-accent);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 25px rgba(255, 215, 61, 0.35);
}

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

.btn-secondary:hover {
    border-color: var(--accent);
    background: rgba(255, 215, 61, 0.05);
}

.btn-full {
    width: 100%;
}

/* ==========================================
   Section Styles
   ========================================== */
section {
    padding: var(--spacing-3xl) 0;
}

.section-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.section-title {
    font-size: clamp(2rem, 4vw, 2.75rem);
    font-weight: 700;
    text-align: center;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--text-secondary);
    text-align: center;
    max-width: 600px;
    margin: 0 auto var(--spacing-2xl);
}

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

.about-content {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: var(--spacing-2xl);
    align-items: start;
}

.about-text {
    font-size: 1.1rem;
    line-height: 1.9;
}

.about-lead {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-lg);
    color: var(--text-primary);
}

.about-text p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
}

.about-text strong {
    color: var(--accent);
    font-weight: 600;
}

.about-timeline {
    padding: var(--spacing-lg);
    background: var(--surface);
    border-radius: 16px;
    border: 1px solid var(--border);
}

.timeline-item {
    display: flex;
    gap: var(--spacing-md);
    padding: var(--spacing-md) 0;
    border-bottom: 1px solid var(--border);
    opacity: 0.7;
    transition: opacity var(--transition-fast);
}

.timeline-item:last-child {
    border-bottom: none;
}

.timeline-item:hover,
.timeline-item.active {
    opacity: 1;
}

.timeline-year {
    font-weight: 700;
    color: var(--accent);
    font-family: 'Work Sans', sans-serif;
    min-width: 60px;
}

.timeline-desc {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.timeline-item.active .timeline-desc {
    color: var(--text-primary);
}

/* ==========================================
   CheezLAB Section
   ========================================== */
.cheezlab {
    background: var(--bg);
    position: relative;
    overflow: hidden;
}

.cheezlab::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--accent), transparent);
    opacity: 0.3;
}

.cheezlab-header {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
}

.cheezlab-logo {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.cheezlab-logo-img {
    width: 60px;
    height: auto;
}

/* Cheez SVG 아이콘 색상 */
.cheez-svg-icon {
    filter: none;
}

.cheezlab-logo-svg,
.cheez-logo-svg {
    width: 60px;
    height: auto;
}

.cheezlab-logo-svg path,
.cheez-logo-svg path {
    fill: var(--accent);
}

.cheezlab-logo-svg .cheese-side,
.cheez-logo-svg .cheese-side {
    fill: var(--accent-dark);
}

.cheezlab-logo-svg .cheese-hole,
.cheez-logo-svg .cheese-hole {
    fill: var(--bg);
}

.cheezlab-logo-svg .cheese-line,
.cheez-logo-svg .cheese-line {
    stroke: var(--bg);
    stroke-width: 2;
}

:root[data-theme="light"] .cheezlab-logo-svg .cheese-hole,
:root[data-theme="light"] .cheez-logo-svg .cheese-hole {
    fill: var(--surface);
}

:root[data-theme="light"] .cheezlab-logo-svg .cheese-line,
:root[data-theme="light"] .cheez-logo-svg .cheese-line {
    stroke: var(--surface);
}

.cheezlab-title {
    font-size: 2.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--accent), var(--accent-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.cheezlab-tagline {
    font-size: 1rem;
    color: var(--text-muted);
    margin-bottom: var(--spacing-md);
}

.cheezlab-desc {
    font-size: 1.125rem;
    color: var(--text-secondary);
    line-height: 1.8;
    max-width: 600px;
    margin: 0 auto;
}

/* Services Grid */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-2xl);
}

.service-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 20px;
    padding: var(--spacing-xl);
    position: relative;
    transition: all var(--transition-normal);
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--accent), var(--accent-secondary));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition-normal);
}

.service-card:hover {
    transform: translateY(-4px);
    border-color: var(--border-accent);
    box-shadow: var(--shadow-lg);
}

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

.service-card.featured {
    border-color: var(--border-accent);
    background: linear-gradient(135deg, rgba(255, 215, 61, 0.05), transparent);
}

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

.service-card.coming-soon {
    opacity: 0.7;
}

.service-status {
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    padding: 0.25rem 0.75rem;
    background: rgba(0, 180, 216, 0.2);
    color: var(--accent-secondary);
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
}

.service-status.status-dev {
    background: rgba(255, 215, 61, 0.2);
    color: var(--accent);
}

.service-status.status-early {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-muted);
}

.service-icon {
    width: 48px;
    height: 48px;
    margin-bottom: var(--spacing-md);
    display: flex;
    align-items: center;
    justify-content: center;
}

.service-icon svg {
    width: 100%;
    height: 100%;
    stroke: var(--accent);
}

.service-icon-img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.service-name {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 0.25rem;
    color: var(--text-primary);
}

.service-tagline {
    font-size: 0.9rem;
    color: var(--accent);
    margin-bottom: var(--spacing-md);
    font-style: italic;
}

.service-desc {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: var(--spacing-md);
}

.service-features {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: var(--spacing-md);
}

.feature-tag {
    padding: 0.25rem 0.75rem;
    background: rgba(255, 215, 61, 0.1);
    border: 1px solid rgba(255, 215, 61, 0.2);
    border-radius: 20px;
    font-size: 0.8rem;
    color: var(--accent);
}

.service-link {
    display: inline-block;
    color: var(--accent);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.95rem;
    transition: all var(--transition-fast);
}

.service-link:hover {
    color: var(--accent-light);
    transform: translateX(4px);
}

/* Roadmap */
.roadmap {
    padding: var(--spacing-md) 0;
    max-width: 800px;
    margin: 0 auto;
}

.roadmap.roadmap-full {
    max-width: 100%;
}

.roadmap-header {
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-md);
}

.roadmap-title {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
}

.roadmap-timeline {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    position: relative;
    gap: var(--spacing-md);
}

.roadmap-timeline::before {
    content: '';
    position: absolute;
    top: 7px;
    left: 0;
    right: 0;
    height: 2px;
    background: repeating-linear-gradient(
        90deg,
        var(--text-muted) 0,
        var(--text-muted) 4px,
        transparent 4px,
        transparent 7px
    );
    z-index: 1;
}

.roadmap-phase {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
    position: relative;
    z-index: 2;
    flex: 1;
}

.roadmap-phase:last-child {
    align-items: flex-end;
}

.phase-marker {
    position: relative;
    width: 16px;
    height: 16px;
    flex-shrink: 0;
}

.marker-dot {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 14px;
    height: 14px;
    background: var(--text-muted);
    border-radius: 50%;
    border: 3px solid var(--bg);
    box-shadow: 0 0 0 2px var(--text-muted);
    transition: all var(--transition-normal);
}

.roadmap-phase.active .marker-dot {
    background: var(--accent);
    box-shadow: 0 0 0 3px rgba(255, 215, 61, 0.5);
}

.marker-pulse {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 24px;
    height: 24px;
    background: rgba(255, 215, 61, 0.4);
    border-radius: 50%;
    animation: pulse-ring 2s ease-out infinite;
}

@keyframes pulse-ring {
    0% {
        transform: translate(-50%, -50%) scale(1);
        opacity: 1;
    }
    100% {
        transform: translate(-50%, -50%) scale(1.8);
        opacity: 0;
    }
}

.phase-label {
    font-size: 0.95rem;
    color: var(--text-primary);
    font-weight: 700;
}

.roadmap-phase.active .phase-label {
    color: var(--accent);
}

.phase-items {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.roadmap-phase:nth-child(2) .phase-items {
    align-items: center;
}

.roadmap-phase:last-child .phase-items {
    align-items: flex-end;
}

.phase-item {
    display: inline-block;
    padding: 10px 20px;
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-secondary);
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 24px;
    text-decoration: none;
    transition: all var(--transition-fast);
    cursor: pointer;
}

.phase-item:hover {
    color: var(--accent);
    border-color: var(--accent);
    background: rgba(255, 215, 61, 0.1);
}

.roadmap-phase.active .phase-item {
    color: var(--text-primary);
    background: rgba(255, 215, 61, 0.1);
    border-color: var(--accent);
}

/* ==========================================
   Technology Section
   ========================================== */
.technology {
    background: var(--bg-secondary);
}

.tech-showcase {
    margin-bottom: var(--spacing-2xl);
}

.tech-main {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
    padding: var(--spacing-2xl);
    background: linear-gradient(135deg, rgba(255, 215, 61, 0.05), transparent);
    border-radius: 20px;
    border: 1px solid var(--border-accent);
}

.tech-main-title {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

.tech-main-desc {
    font-size: 1.1rem;
    color: var(--text-secondary);
    line-height: 1.8;
}

.tech-features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-2xl);
}

.tech-feature {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: var(--spacing-lg);
    text-align: center;
    transition: all var(--transition-normal);
}

.tech-feature:hover {
    transform: translateY(-4px);
    border-color: var(--accent);
}

.tech-feature-icon {
    width: 40px;
    height: 40px;
    margin: 0 auto var(--spacing-sm);
    display: flex;
    align-items: center;
    justify-content: center;
}

.tech-feature-icon svg {
    width: 100%;
    height: 100%;
    stroke: var(--accent);
}

.tech-feature h4 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.tech-feature p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Commands Grid */
.tech-commands {
    background: var(--surface);
    border-radius: 16px;
    padding: var(--spacing-xl);
    border: 1px solid var(--border);
}

.tech-commands-title {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    text-align: center;
    color: var(--text-primary);
}

.tech-commands-desc {
    text-align: center;
    color: var(--text-secondary);
    line-height: 1.8;
}

.commands-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.75rem;
}

.command-tag {
    padding: 0.5rem 1rem;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: 0.9rem;
    color: var(--text-secondary);
    transition: all var(--transition-fast);
}

.command-tag {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.command-tag svg {
    flex-shrink: 0;
}

.command-tag:hover {
    border-color: var(--accent);
    color: var(--accent);
}

.command-tag:hover svg {
    stroke: var(--accent);
}

.text-muted {
    color: var(--text-muted);
}

/* Comparison Table */
.tech-comparison {
    background: var(--surface);
    border-radius: 20px;
    padding: var(--spacing-xl);
    border: 1px solid var(--border);
    overflow: hidden;
}

.comparison-title {
    font-size: 1.25rem;
    font-weight: 600;
    text-align: center;
    margin-bottom: var(--spacing-lg);
    color: var(--text-primary);
}

.comparison-table {
    display: flex;
    flex-direction: column;
}

.comparison-header,
.comparison-row {
    display: grid;
    grid-template-columns: 1.5fr repeat(3, 1fr);
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    border-bottom: 1px solid var(--border);
}

.comparison-header {
    background: var(--bg);
    font-weight: 600;
    color: var(--text-primary);
}

.comparison-row:last-child {
    border-bottom: none;
}

.comparison-row span {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.comparison-row span:first-child {
    color: var(--text-primary);
    font-weight: 500;
}

.comparison-row .highlight,
.comparison-header .highlight {
    color: var(--accent);
    font-weight: 600;
}

/* ==========================================
   Studio Section
   ========================================== */
.studio {
    background: var(--bg);
}

.studio-services {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-2xl);
}

.studio-service {
    padding: var(--spacing-xl);
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 16px;
    transition: all var(--transition-normal);
}

.studio-service:hover {
    transform: translateY(-4px);
    border-color: var(--accent-secondary);
}

.studio-service-number {
    font-size: 0.85rem;
    color: var(--accent-secondary);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.studio-service h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.studio-service p {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* Clients */
.studio-clients {
    margin-bottom: var(--spacing-2xl);
}

.clients-title {
    font-size: 1rem;
    color: var(--text-muted);
    text-align: center;
    margin-bottom: var(--spacing-lg);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.clients-logos {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--spacing-md);
}

.client-logo {
    padding: var(--spacing-sm) var(--spacing-lg);
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-muted);
    transition: all var(--transition-fast);
}

.client-logo:hover {
    color: var(--text-primary);
    border-color: var(--accent-secondary);
}

.studio-cta {
    text-align: center;
    margin-top: var(--spacing-md);
}

/* ==========================================
   Contact Section
   ========================================== */
.contact {
    background: var(--bg-secondary);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: var(--spacing-2xl);
}

.contact-heading {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

.contact-desc {
    font-size: 1rem;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: var(--spacing-xl);
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.contact-item {
    padding: var(--spacing-md);
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 12px;
}

.contact-label {
    font-size: 0.8rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.25rem;
}

.contact-value {
    color: var(--text-primary);
    font-size: 1rem;
}

.contact-value a {
    color: var(--text-primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.contact-value a:hover {
    color: var(--accent);
}

/* Contact Form */
.contact-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-group label {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-primary);
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: 0.875rem 1rem;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 10px;
    color: var(--text-primary);
    font-family: inherit;
    font-size: 1rem;
    transition: all var(--transition-fast);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(255, 215, 61, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

/* ==========================================
   Footer
   ========================================== */
.footer {
    background: var(--surface);
    border-top: 1px solid var(--border);
    padding: var(--spacing-2xl) 0 var(--spacing-lg);
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.footer-main {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
}

.footer-brand {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    margin-bottom: var(--spacing-sm);
}

.footer-logo {
    height: 32px;
    width: auto;
}

.footer-name {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    font-family: 'Work Sans', sans-serif;
    letter-spacing: 0.05em;
}

.footer-tagline {
    color: var(--text-muted);
    font-size: 0.95rem;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: var(--spacing-2xl);
    margin-bottom: var(--spacing-2xl);
}

.footer-section h4 {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.footer-section a {
    display: block;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
    transition: color var(--transition-fast);
}

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

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

.footer-bottom p {
    color: var(--text-muted);
    font-size: 0.85rem;
}

/* ==========================================
   Back to Top
   ========================================== */
.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--accent);
    color: #000;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-accent);
    z-index: 999;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 30px rgba(255, 215, 61, 0.4);
}

.back-to-top svg {
    width: 24px;
    height: 24px;
}

/* ==========================================
   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);
}

/* ==========================================
   Responsive
   ========================================== */
@media (max-width: 1024px) {
    .about-content {
        grid-template-columns: 1fr;
    }
    
    .roadmap-title {
        font-size: 1.4rem;
        font-weight: 600;
    }

    .roadmap-timeline {
        flex-direction: column;
        gap: var(--spacing-md);
        align-items: stretch;
        padding-left: 28px;
    }

    .roadmap-timeline::before {
        display: none;
    }

    .roadmap-phase {
        flex-direction: row;
        align-items: center;
        gap: var(--spacing-md);
        text-align: left;
        position: relative;
        min-height: 36px;
    }

    .roadmap-phase .phase-marker {
        position: absolute;
        left: -23px;
        top: 50%;
        transform: translateY(-50%);
    }

    .roadmap-phase .marker-dot {
        width: 10px;
        height: 10px;
    }

    .roadmap-phase.active .marker-dot {
        width: 12px;
        height: 12px;
    }

    .phase-label {
        min-width: 85px;
        font-size: 0.9rem;
        flex-shrink: 0;
    }

    .phase-items {
        flex-direction: row;
        flex-wrap: wrap;
        gap: 6px;
    }
}

@media (max-width: 768px) {
    /* 모바일에서 로드맵, 클라이언트 숨김 */
    .roadmap,
    .studio-clients {
        display: none;
    }

    .nav-container {
        padding: 0 1rem;
    }
    
    .mobile-menu-toggle {
        display: flex;
        align-items: center;
        justify-content: center;
    }
    
    .nav-links {
        position: fixed;
        top: 0;
        right: 0;
        height: 100vh;
        width: min(320px, 85vw);
        padding: 6rem 2rem 2rem;
        background: var(--bg);
        flex-direction: column;
        gap: 1.5rem;
        transform: translateX(100%);
        transition: transform var(--transition-normal);
        border-left: 1px solid var(--border);
    }
    
    .nav-links.is-open {
        transform: translateX(0);
    }
    
    .nav-links a {
        font-size: 1.1rem;
        color: var(--text-primary);
    }
    
    .nav-links a::after {
        display: none;
    }
    
    .nav-theme-item {
        margin-top: auto;
        padding-top: var(--spacing-lg);
        border-top: 1px solid var(--border);
    }
    
    .hero {
        padding: 7rem 1rem 3rem;
    }
    
    .hero-stats {
        gap: var(--spacing-lg);
    }
    
    .stat-value {
        font-size: 2rem;
    }
    
    .hero-cta {
        flex-direction: column;
        width: 100%;
    }
    
    .hero-cta .btn {
        width: 100%;
    }
    
    section {
        padding: var(--spacing-2xl) 0;
    }
    
    .section-container {
        padding: 0 1rem;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-links {
        flex-direction: column;
        align-items: center;
        gap: var(--spacing-lg);
    }
    
    .footer-section {
        text-align: center;
    }
    
    .comparison-header,
    .comparison-row {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .comparison-header span:first-child,
    .comparison-row span:first-child {
        font-weight: 700;
        margin-bottom: 0.5rem;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: var(--spacing-md);
    }
    
    .cheezlab-icon {
        font-size: 2rem;
    }
    
    .cheezlab-title {
        font-size: 2rem;
    }
    
    .back-to-top {
        bottom: 1rem;
        right: 1rem;
        width: 44px;
        height: 44px;
    }
}

/* =====================================================
   ENGINE SYNERGY - Static Diagram Style
   ===================================================== */

.engine-synergy {
    margin-top: var(--spacing-lg);
    padding: var(--spacing-sm) 0;
    overflow: visible;
}

.synergy-title {
    font-size: 2.2rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
    text-align: center;
}

.synergy-desc {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
    text-align: center;
}

/* Synergy Diagram Container */
.synergy-diagram {
    position: relative;
    width: 100%;
    max-width: 900px;
    height: 380px;
    margin: 0 auto;
}

/* Connection Lines SVG */
.synergy-lines {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 1;
}

/* Central Engine Core */
.engine-core {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 180px;
    height: 180px;
    z-index: 10;
}

.engine-glow {
    position: absolute;
    inset: -40px;
    background: radial-gradient(circle, rgba(255, 215, 61, 0.4) 0%, rgba(255, 215, 61, 0.1) 50%, transparent 70%);
    border-radius: 50%;
    animation: engine-pulse 3s ease-in-out infinite;
}

@keyframes engine-pulse {
    0%, 100% { transform: scale(1); opacity: 0.8; }
    50% { transform: scale(1.1); opacity: 1; }
}

.engine-inner {
    position: relative;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--accent) 0%, var(--accent-dark) 100%);
    border-radius: 50%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    box-shadow:
        0 0 80px rgba(255, 215, 61, 0.5),
        0 0 120px rgba(255, 215, 61, 0.3),
        inset 0 -8px 20px rgba(0, 0, 0, 0.2);
    z-index: 2;
}

.engine-logo {
    width: 50px;
    height: 50px;
    filter: brightness(0);
}

.engine-title {
    font-size: 0.9rem;
    font-weight: 700;
    color: #000;
    text-align: center;
    line-height: 1.3;
    letter-spacing: 0.02em;
}

/* App Nodes */
.app-node {
    position: absolute;
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem 1.5rem;
    background: var(--surface);
    border: 2px solid var(--border);
    border-radius: 60px;
    cursor: pointer;
    z-index: 15;
    transition: all var(--transition-normal);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
}

.app-node:hover {
    border-color: var(--accent);
    transform: translateY(-4px);
    box-shadow:
        0 0 25px rgba(255, 215, 61, 0.3),
        0 8px 30px rgba(0, 0, 0, 0.25);
}

.app-node.active {
    border-color: var(--accent);
    background: rgba(255, 215, 61, 0.1);
}

/* App Node Wrapper Positions */
.app-node-wrapper {
    position: absolute;
    z-index: 15;
}

.app-cheez-wrapper {
    left: 3%;
    top: 50%;
    transform: translateY(-50%);
}

/* Cheez connection line */
.app-cheez-wrapper::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 100%;
    width: calc(47% - 3%);
    height: 2px;
    background: repeating-linear-gradient(
        90deg,
        rgba(255, 215, 61, 0.5) 0,
        rgba(255, 215, 61, 0.5) 8px,
        transparent 8px,
        transparent 12px
    );
    transform: translateY(-50%);
    z-index: 1;
}

.app-oneulun-wrapper {
    right: 3%;
    top: 15%;
}

/* Oneulun connection line */
.app-oneulun-wrapper::after {
    content: '';
    position: absolute;
    top: 50%;
    right: 100%;
    width: 200px;
    height: 2px;
    background: repeating-linear-gradient(
        90deg,
        rgba(255, 215, 61, 0.1) 0,
        rgba(255, 215, 61, 0.1) 8px,
        transparent 8px,
        transparent 12px
    );
    transform: translateY(-50%) rotate(-30deg);
    transform-origin: right center;
    z-index: 1;
}

.app-panup-wrapper {
    right: 3%;
    bottom: 15%;
}

/* Panup connection line */
.app-panup-wrapper::after {
    content: '';
    position: absolute;
    top: 50%;
    right: 100%;
    width: 200px;
    height: 2px;
    background: repeating-linear-gradient(
        90deg,
        rgba(255, 215, 61, 0.1) 0,
        rgba(255, 215, 61, 0.1) 8px,
        transparent 8px,
        transparent 12px
    );
    transform: translateY(-50%) rotate(30deg);
    transform-origin: right center;
    z-index: 1;
}

/* App Nodes */
.app-node {
    position: relative;
}

.app-cheez:hover,
.app-oneulun:hover,
.app-panup:hover {
    transform: translateY(-4px);
}

.app-icon {
    width: 56px;
    height: 56px;
    background: var(--bg);
    border: 2px solid var(--border);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.app-icon img {
    width: 36px;
    height: 36px;
}

.app-icon svg {
    width: 32px;
    height: 32px;
    stroke: var(--accent);
}

.app-info {
    display: flex;
    flex-direction: column;
    gap: 0.2rem;
}

.app-name {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-primary);
}

.app-desc {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

/* Detail Panels - Inline Style */
.detail-panel {
    display: none;
    background: var(--bg);
    border: 1px solid var(--accent);
    border-radius: 16px;
    padding: var(--spacing-md);
    position: absolute;
    animation: detail-fade-in 0.3s ease-out;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(10px);
    width: 320px;
    z-index: 100;
}

/* Position panels next to their nodes */
.app-cheez-wrapper .detail-panel {
    left: calc(100% + 16px);
    top: 50%;
    transform: translateY(-50%);
    animation: detail-fade-in-cheez 0.3s ease-out;
}

.app-oneulun-wrapper .detail-panel {
    right: calc(100% + 16px);
    top: 0;
    animation: detail-fade-in 0.3s ease-out;
}

.app-panup-wrapper .detail-panel {
    right: calc(100% + 16px);
    bottom: 0;
    animation: detail-fade-in 0.3s ease-out;
}

.detail-panel.active {
    display: block;
}

@keyframes detail-fade-in {
    from {
        opacity: 0;
        transform: translateX(10px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes detail-fade-in-cheez {
    from {
        opacity: 0;
        transform: translateY(-50%) translateX(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(-50%) translateX(0);
    }
}

.detail-close {
    position: absolute;
    top: var(--spacing-sm);
    right: var(--spacing-sm);
    width: 28px;
    height: 28px;
    background: transparent;
    border: 1px solid var(--border);
    border-radius: 50%;
    color: var(--text-secondary);
    font-size: 1.1rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

.detail-close:hover {
    border-color: var(--accent);
    color: var(--accent);
    background: rgba(255, 215, 61, 0.1);
}

.detail-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
}

.detail-logo,
.detail-icon {
    width: 40px;
    height: 40px;
    flex-shrink: 0;
}

.detail-icon {
    display: flex;
    align-items: center;
    justify-content: center;
}

.detail-icon svg {
    width: 30px;
    height: 30px;
    stroke: var(--accent);
}

.detail-title {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0;
}

.detail-tagline {
    font-size: 0.8rem;
    color: var(--accent);
}

.detail-desc {
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: var(--spacing-sm);
}

.detail-features {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
    margin-bottom: var(--spacing-sm);
}

.detail-features span {
    padding: 0.2rem 0.6rem;
    background: rgba(255, 215, 61, 0.1);
    border: 1px solid rgba(255, 215, 61, 0.2);
    border-radius: 20px;
    font-size: 0.7rem;
    color: var(--accent);
}

.detail-link {
    display: inline-block;
    color: var(--accent);
    font-weight: 600;
    font-size: 0.85rem;
    text-decoration: none;
    transition: all var(--transition-fast);
}

.detail-link:hover {
    color: var(--accent-light);
}

.detail-status {
    display: inline-block;
    padding: 0.2rem 0.6rem;
    background: rgba(0, 180, 216, 0.2);
    color: var(--accent-secondary);
    border-radius: 20px;
    font-size: 0.7rem;
    font-weight: 600;
}

/* Responsive - Synergy Diagram */
@media (max-width: 900px) {
    .synergy-diagram {
        height: 600px;
    }

    .engine-core {
        top: 30%;
        width: 160px;
        height: 160px;
    }

    .engine-logo {
        width: 40px;
        height: 40px;
    }

    .engine-title {
        font-size: 0.75rem;
    }

    /* Hide Engine Synergy on mobile */
    .engine-synergy {
        display: none;
    }
}

@media (max-width: 480px) {
    .engine-core {
        width: 140px;
        height: 140px;
    }

    .engine-logo {
        width: 32px;
        height: 32px;
    }

    .engine-title {
        font-size: 0.65rem;
    }

    .app-node {
        padding: 0.8rem 1rem;
    }

    .app-icon {
        width: 44px;
        height: 44px;
    }

    .app-icon img {
        width: 28px;
        height: 28px;
    }

    .app-icon svg {
        width: 24px;
        height: 24px;
    }

    .app-name {
        font-size: 1rem;
    }

    .app-desc {
        font-size: 0.75rem;
    }

    .detail-header {
        flex-direction: column;
        text-align: center;
        gap: var(--spacing-xs);
    }

    .detail-panel {
        padding: var(--spacing-md);
    }
}

/* =====================================================
   PORTFOLIO PAGE STYLES
   ===================================================== */

.page-header {
    padding: calc(var(--nav-height) + var(--spacing-3xl)) 0 var(--spacing-2xl);
    background: var(--bg);
    text-align: center;
}

.page-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    background: linear-gradient(135deg, var(--accent), var(--accent-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.page-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
}

.portfolio-section {
    padding: var(--spacing-2xl) 0 var(--spacing-3xl);
}

.portfolio-filter {
    display: flex;
    justify-content: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-2xl);
    flex-wrap: wrap;
}

.filter-btn {
    padding: 0.75rem 1.5rem;
    border: 1px solid var(--border);
    border-radius: var(--radius-full);
    background: transparent;
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.filter-btn:hover {
    border-color: var(--accent);
    color: var(--accent);
}

.filter-btn.active {
    background: var(--accent);
    border-color: var(--accent);
    color: var(--bg);
}

.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
}

.portfolio-item {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    aspect-ratio: 16/10;
    cursor: pointer;
}

.portfolio-thumb {
    position: relative;
    width: 100%;
    height: 100%;
}

.portfolio-placeholder {
    width: 100%;
    height: 100%;
    background: var(--surface);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform var(--transition-normal);
}

.portfolio-placeholder svg {
    width: 60px;
    height: 60px;
    color: var(--text-tertiary);
    opacity: 0.5;
}

.portfolio-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(0,0,0,0.9) 0%, rgba(0,0,0,0.3) 50%, transparent 100%);
    padding: var(--spacing-lg);
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.portfolio-item:hover .portfolio-overlay {
    opacity: 1;
}

.portfolio-item:hover .portfolio-placeholder {
    transform: scale(1.05);
}

.portfolio-category {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--accent);
    margin-bottom: var(--spacing-xs);
}

.portfolio-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: #fff;
    margin-bottom: var(--spacing-xs);
}

.portfolio-client {
    font-size: 0.9rem;
    color: rgba(255,255,255,0.7);
}

.portfolio-more {
    text-align: center;
    margin-top: var(--spacing-2xl);
}

.portfolio-cta {
    padding: var(--spacing-3xl) 0;
    background: var(--surface);
    text-align: center;
}

.cta-content h2 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
}

.cta-content p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xl);
}

/* Portfolio Responsive */
@media (max-width: 1024px) {
    .portfolio-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 640px) {
    .portfolio-grid {
        grid-template-columns: 1fr;
    }
    
    .portfolio-filter {
        gap: var(--spacing-xs);
    }
    
    .filter-btn {
        padding: 0.5rem 1rem;
        font-size: 0.85rem;
    }
}