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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--background);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.875rem 1.75rem;
    font-size: var(--font-size-base);
    font-weight: 600;
    border-radius: var(--radius-lg);
    border: none;
    cursor: pointer;
    transition: all var(--transition-base);
    gap: 0.5rem;
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: var(--shadow-md), 0 4px 14px rgba(99, 102, 241, 0.4);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg), 0 6px 20px rgba(99, 102, 241, 0.5);
}

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

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

.btn-full {
    width: 100%;
}

/* ===== Section Common ===== */
.section-header {
    text-align: center;
    max-width: 800px;
    margin: 0 auto var(--space-3xl);
}

.section-title {
    font-size: var(--font-size-4xl);
    font-weight: 600;
    /* Semi-bold instead of Bold */
    color: var(--text-primary);
    margin-bottom: var(--space-md);
    letter-spacing: -0.02em;
    /* Tight tracking */
    background: none;
    -webkit-text-fill-color: var(--text-primary);
}

.section-subtitle {
    font-size: var(--font-size-xl);
    color: var(--text-secondary);
    font-weight: 400;
    max-width: 600px;
    margin: 0 auto;
}

/* ===== Dark Section Theme ===== */
.section-dark {
    background: #1a1a1a !important;
}

.section-dark .section-title {
    color: #ffffff;
    -webkit-text-fill-color: #ffffff;
}

.section-dark .section-subtitle {
    color: rgba(255, 255, 255, 0.7);
}

/* ===== Navbar ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--navbar-height);
    background: rgba(255, 255, 255, 0.8);
    /* Highly translucent white */
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    /* Very subtle border */
    z-index: 1000;
    transition: all var(--transition-base);
}

.navbar.scrolled {
    box-shadow: var(--shadow-md);
}

.nav-container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: relative;
    /* For absolute positioning of logo */
}

/* Center Logo Styles */
.nav-logo-center {
    position: absolute;
    left: 50%;
    top: 0;
    transform: translateX(-50%);
    z-index: 101;
    display: flex;
    justify-content: center;
}

.logo-img-center {
    height: 120px;
    /* Overhanging size */
    width: auto;
    /* Maintain aspect ratio */
    object-fit: contain;
    /* Ensure image isn't distorted */
    /* Remove shadow for cleaner look, or keep subtle one */
    filter: drop-shadow(0 4px 6px rgba(0, 0, 0, 0.1));
}

/* Split Menus */
.nav-menu {
    display: flex;
    align-items: center;
    gap: var(--space-xl);
}

.nav-menu-left {
    justify-content: flex-end;
    flex: 1;
    padding-right: 200px;
    /* Wider space for center logo */
}

.nav-menu-right {
    justify-content: flex-start;
    flex: 1;
    padding-left: 200px;
    /* Wider space for center logo */
}

.nav-link {
    font-weight: 500;
    color: var(--text-secondary);
    transition: color var(--transition-fast);
    position: relative;
}

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

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

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

.nav-cta {
    background: var(--text-primary);
    /* Black button for Apple style */
    color: white !important;
    padding: 0.6rem 1.4rem;
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: 500;
    transition: all var(--transition-base);
}

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

.nav-cta:hover {
    transform: translateY(-1px);
    background: #333;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 8px;
    background: none;
    border: none;
    cursor: pointer;
}

.nav-toggle span {
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    transition: all var(--transition-base);
}

/* ===== Hero Section ===== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    background: #FFFFFF;
    padding-top: var(--navbar-height);
}

.hero::before {
    display: none;
}

/* Hero Network Canvas */
.hero-network {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
}

/* Typing cursor animation */
.typing-cursor {
    display: inline-block;
    color: var(--primary);
    font-weight: 300;
    animation: blink 1s step-end infinite;
}

@keyframes blink {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0;
    }
}

.typing-cursor.hidden {
    display: none;
}

/* Accessibility: Reduce motion for users who prefer it */
@media (prefers-reduced-motion: reduce) {
    .hero-network {
        display: none;
    }

    .typing-cursor {
        animation: none;
        opacity: 1;
    }
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    padding: var(--space-xl);
    max-width: 980px;
    /* Apple standard width */
}

.hero-title {
    font-size: clamp(3rem, 6vw, 5rem);
    /* Bigger typography */
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-lg);
    line-height: 1.05;
    letter-spacing: -0.02em;
}

.hero-title-accent {
    background: none;
    -webkit-text-fill-color: var(--text-primary);
    color: var(--primary);
}

.hero-brand {
    background: linear-gradient(135deg, #6366F1 0%, #8B5CF6 50%, #A855F7 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 700;
}

.hero-subtitle {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
    margin-bottom: var(--space-2xl);
    line-height: 1.8;
}

.hero-actions {
    display: flex;
    gap: var(--space-md);
    justify-content: center;
    flex-wrap: wrap;
}

.hero-scroll {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    color: var(--text-muted);
    font-size: var(--font-size-sm);
}

.scroll-indicator {
    width: 24px;
    height: 40px;
    border: 2px solid var(--border);
    border-radius: 12px;
    position: relative;
}

.scroll-indicator::after {
    content: '';
    position: absolute;
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
    width: 4px;
    height: 8px;
    background: var(--primary);
    border-radius: 2px;
    animation: scrollDown 2s ease-in-out infinite;
}

@keyframes scrollDown {

    0%,
    100% {
        opacity: 1;
        transform: translateX(-50%) translateY(0);
    }

    50% {
        opacity: 0.3;
        transform: translateX(-50%) translateY(12px);
    }
}

/* ===== Services Section ===== */
.services {
    padding: 120px 0;
    background: var(--background);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-xl);
}

.service-card {
    background: var(--background);
    border-radius: var(--radius-xl);
    padding: var(--space-2xl);
    border: none;
    /* No border for clean look */
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.service-card:hover {
    transform: scale(1.02);
    /* Subtle scale up */
    box-shadow: var(--shadow-xl);
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition-slow);
}

.service-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-color: transparent;
}

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

.service-icon {
    font-size: 3rem;
    margin-bottom: var(--space-lg);
}

.service-title {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-md);
}

.service-description {
    color: var(--text-secondary);
    margin-bottom: var(--space-lg);
    line-height: 1.7;
}

.service-features {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

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

.service-features li::before {
    content: '✓';
    color: var(--primary);
    font-weight: 600;
}

/* Services Dark Mode */
.section-dark.services .service-card {
    background: #2a2a2a;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.section-dark.services .service-card:hover {
    background: #333333;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.4);
}

.section-dark.services .service-title {
    color: #ffffff;
}

.section-dark.services .service-description {
    color: rgba(255, 255, 255, 0.7);
}

.section-dark.services .service-features li {
    color: rgba(255, 255, 255, 0.6);
}

.section-dark.services .service-features li::before {
    color: #8B5CF6;
}

/* ===== Portfolio Section ===== */
.portfolio {
    padding: 120px 0;
    background: #ffffff;
    overflow: hidden;
}

/* Carousel Container */
.portfolio-carousel {
    position: relative;
    max-width: 1000px;
    margin: 0 auto;
}

.carousel-wrapper {
    overflow: hidden;
    border-radius: var(--radius-2xl);
    background: var(--background);
    box-shadow: var(--shadow-xl);
}

.carousel-track {
    display: flex;
    transition: transform 0.5s cubic-bezier(0.25, 0.1, 0.25, 1);
    will-change: transform;
}

.carousel-slide {
    min-width: 100%;
    padding: var(--space-2xl);
}

.slide-content {
    display: grid;
    grid-template-columns: 320px 1fr;
    gap: var(--space-3xl);
    align-items: center;
}

/* 짝수 슬라이드: 이미지 오른쪽 배치 */
.carousel-slide:nth-child(even) .slide-content {
    grid-template-columns: 1fr 320px;
}

.carousel-slide:nth-child(even) .slide-image {
    order: 2;
}

.carousel-slide:nth-child(even) .slide-info {
    order: 1;
    text-align: right;
}

.carousel-slide:nth-child(even) .portfolio-tech,
.carousel-slide:nth-child(even) .emotion-palette,
.carousel-slide:nth-child(even) .feature-highlights {
    justify-content: flex-end;
}

.slide-image {
    position: relative;
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    background: linear-gradient(135deg, #6B46C1 0%, #8B5CF6 100%);
}

.slide-image img {
    width: 100%;
    height: auto;
    aspect-ratio: 9/16;
    object-fit: cover;
    display: block;
}

.slide-info {
    padding: var(--space-lg) 0;
}

.portfolio-tag {
    display: inline-block;
    background: var(--gradient-primary);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: 500;
    margin-bottom: var(--space-md);
}

.portfolio-tag.feature-tag {
    background: linear-gradient(135deg, #6B46C1 0%, #A855F7 100%);
}

.coming-soon-banner {
    display: block !important;
    background: linear-gradient(135deg, #FF4040 0%, #FF8E53 50%, #FF4040 100%) !important;
    background-size: 200% 200% !important;
    border-radius: 16px !important;
    padding: 1.2rem 2rem !important;
    text-align: center !important;
    margin: 0.5rem 0 1rem 0 !important;
    animation: coming-soon-shimmer 2s ease-in-out infinite !important;
    box-shadow: 0 4px 24px rgba(255, 64, 64, 0.5) !important;
}

.coming-soon-banner .coming-soon-text {
    display: block !important;
    color: #ffffff !important;
    font-size: 1.6rem !important;
    font-weight: 800 !important;
    letter-spacing: 0.15em !important;
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.2) !important;
}

.coming-soon-banner .coming-soon-sub {
    display: block !important;
    color: rgba(255, 255, 255, 0.95) !important;
    font-size: 0.9rem !important;
    font-weight: 500 !important;
    margin-top: 0.4rem !important;
}

@keyframes coming-soon-shimmer {
    0%, 100% {
        background-position: 0% 50%;
        box-shadow: 0 4px 24px rgba(255, 64, 64, 0.5);
    }
    50% {
        background-position: 100% 50%;
        box-shadow: 0 6px 36px rgba(255, 64, 64, 0.7);
    }
}

/* ── Slide Theme: Neon ── */
.slide-theme-neon {
    background: linear-gradient(135deg, #0D0221 0%, #150535 40%, #1A0640 100%);
    border-radius: 20px;
    position: relative;
    overflow: hidden;
}
.slide-theme-neon::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse at 20% 50%, rgba(107, 70, 193, 0.15) 0%, transparent 60%),
        radial-gradient(ellipse at 80% 50%, rgba(255, 107, 182, 0.1) 0%, transparent 60%);
    pointer-events: none;
}
.slide-theme-neon .portfolio-title {
    color: #fff !important;
    text-shadow: 0 0 20px rgba(168, 85, 247, 0.8), 0 0 40px rgba(168, 85, 247, 0.4);
}
.slide-theme-neon .portfolio-tag {
    background: linear-gradient(135deg, #A855F7, #EC4899) !important;
    box-shadow: 0 0 12px rgba(168, 85, 247, 0.5);
}
.slide-theme-neon .slide-tagline,
.slide-theme-neon .portfolio-description {
    color: rgba(255, 255, 255, 0.85) !important;
}
.slide-theme-neon .slide-image {
    box-shadow: 0 0 30px rgba(168, 85, 247, 0.4), 0 0 60px rgba(168, 85, 247, 0.15);
    border: 1px solid rgba(168, 85, 247, 0.3);
}

/* ── Slide Theme: Y2K ── */
.slide-theme-y2k {
    background: linear-gradient(135deg, #FFF0F5 0%, #F0E6FF 50%, #E6F0FF 100%);
    border-radius: 20px;
    position: relative;
    overflow: hidden;
}
.slide-theme-y2k::before {
    content: '✦ ✧ ★ ✦ ✧';
    position: absolute;
    top: 16px;
    right: 24px;
    font-size: 1rem;
    color: rgba(168, 85, 247, 0.25);
    letter-spacing: 8px;
    pointer-events: none;
}
.slide-theme-y2k .portfolio-title {
    color: #8B5CF6 !important;
    text-shadow: 2px 2px 0 rgba(236, 72, 153, 0.2);
}
.slide-theme-y2k .portfolio-tag.feature-tag {
    background: linear-gradient(135deg, #EC4899, #A855F7) !important;
}
.slide-theme-y2k .slide-image {
    box-shadow: none;
    border: none;
    border-radius: 16px;
    background: transparent;
}
.slide-image.feed-cards {
    position: relative;
    width: 320px;
    height: 460px;
    background: transparent !important;
    box-shadow: none !important;
    border: none !important;
    overflow: visible !important;
}
.feed-card {
    position: absolute;
    width: 240px;
    height: auto;
    border-radius: 16px;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.15);
    transition: transform 0.3s ease;
}
.feed-card-1 {
    top: 0;
    left: 0;
    transform: rotate(-6deg);
    z-index: 2;
}
.feed-card-2 {
    top: 40px;
    right: 0;
    transform: rotate(4deg);
    z-index: 1;
}
.feed-cards:hover .feed-card-1 {
    transform: rotate(-3deg) translateY(-8px);
}
.feed-cards:hover .feed-card-2 {
    transform: rotate(2deg) translateY(-4px);
}
.slide-theme-y2k .portfolio-description {
    color: #6B46C1 !important;
}

/* ── Slide Theme: HipHop ── */
.slide-theme-hiphop {
    background: linear-gradient(135deg, #1A1A2E 0%, #16213E 50%, #0F3460 100%);
    border-radius: 20px;
    position: relative;
    overflow: hidden;
}
.slide-theme-hiphop::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        repeating-linear-gradient(
            45deg,
            transparent,
            transparent 40px,
            rgba(255, 215, 0, 0.03) 40px,
            rgba(255, 215, 0, 0.03) 42px
        );
    pointer-events: none;
}
.slide-theme-hiphop .portfolio-title {
    color: #FFD700 !important;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    text-shadow: 2px 2px 0 rgba(255, 215, 0, 0.3);
}
.slide-theme-hiphop .portfolio-tag.feature-tag {
    background: linear-gradient(135deg, #FFD700, #FF8C00) !important;
    color: #1A1A2E !important;
    font-weight: 700;
}
.slide-theme-hiphop .portfolio-description {
    color: rgba(255, 255, 255, 0.85) !important;
}
.slide-theme-hiphop .slide-image {
    box-shadow: 0 8px 32px rgba(255, 215, 0, 0.2);
    border: 2px solid rgba(255, 215, 0, 0.3);
}
.slide-theme-hiphop .feature-highlights {
    background: rgba(255, 215, 0, 0.08);
    border-radius: 12px;
    padding: 0.8rem;
}
.slide-theme-hiphop .feature-item {
    color: #fff !important;
}
.slide-theme-hiphop .feature-item span {
    color: rgba(255, 255, 255, 0.9) !important;
}

/* ── Slide Theme: Retro/Y2K-HipHop ── */
.slide-theme-retro {
    background: linear-gradient(135deg, #0A0A0A 0%, #1A1A2E 50%, #0A0A0A 100%) !important;
    border-radius: 20px;
    position: relative;
    overflow: hidden;
}
.slide-theme-retro::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        repeating-linear-gradient(
            0deg,
            transparent,
            transparent 3px,
            rgba(255, 255, 255, 0.02) 3px,
            rgba(255, 255, 255, 0.02) 4px
        ),
        radial-gradient(ellipse at 20% 80%, rgba(255, 0, 128, 0.12) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 20%, rgba(0, 255, 255, 0.1) 0%, transparent 50%);
    pointer-events: none;
    z-index: 0;
}
.slide-theme-retro::after {
    content: 'VIBE ★ CHECK';
    position: absolute;
    bottom: 16px;
    right: 24px;
    font-size: 0.75rem;
    font-weight: 800;
    letter-spacing: 0.3em;
    color: rgba(255, 215, 0, 0.2);
    text-transform: uppercase;
    pointer-events: none;
    z-index: 0;
}
.slide-theme-retro .portfolio-title {
    color: #FFD700 !important;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    text-shadow: 2px 2px 0 rgba(255, 0, 128, 0.5), 0 0 20px rgba(255, 215, 0, 0.3);
}
.slide-theme-retro .portfolio-tag.feature-tag {
    background: linear-gradient(135deg, #FF0080, #FFD700) !important;
    color: #0A0A0A !important;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    box-shadow: 0 0 15px rgba(255, 0, 128, 0.4);
}
.slide-theme-retro .portfolio-description {
    color: rgba(255, 255, 255, 0.9) !important;
}

.portfolio-title {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--space-md);
    letter-spacing: -0.02em;
}

.slide-tagline {
    font-size: var(--font-size-lg);
    color: var(--primary);
    font-style: italic;
    margin-bottom: var(--space-md);
    font-weight: 500;
}

.portfolio-description {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: var(--space-lg);
    font-size: var(--font-size-base);
}

.portfolio-tech {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
}

.tech-badge {
    background: var(--surface);
    color: var(--primary);
    padding: 0.375rem 0.875rem;
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: 500;
    border: 1px solid var(--border);
}

/* Emotion Palette */
.emotion-palette {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
    margin-top: var(--space-lg);
}

.emotion-dot {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    cursor: pointer;
    transition: all var(--transition-base);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.emotion-dot:hover {
    transform: scale(1.2);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.25);
}

/* Feature Highlights */
.feature-highlights {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-md);
    margin-top: var(--space-lg);
}

.feature-item {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-md);
    background: var(--surface);
    border-radius: var(--radius-lg);
    font-weight: 500;
    color: var(--text-primary);
}

.feature-icon {
    font-size: 1.5rem;
}

/* Character Background Grid (Slide 4) */
.slide-characters {
    position: relative;
    overflow: hidden;
}

.character-bg-grid {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    grid-template-rows: repeat(2, 1fr);
    gap: 3px;
    background: #0A0A0A;
}

.character-bg-grid::after {
    display: none;
}

.character-bg-item {
    position: relative;
    overflow: hidden;
    background: #111;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* No purple overlay — show characters clearly */
.character-bg-item::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 50%, rgba(0, 0, 0, 0.6) 100%);
    pointer-events: none;
    z-index: 1;
    transition: opacity 0.4s ease;
}

.character-bg-item:hover::after {
    opacity: 0;
}

.character-bg-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: top center;
    transition: transform 0.4s ease;
}

.character-bg-item:hover img {
    transform: scale(1.1);
}

.character-label {
    position: absolute;
    bottom: 8px;
    left: 50%;
    transform: translateX(-50%);
    background: linear-gradient(135deg, #FF0080, #FFD700);
    color: #0A0A0A;
    padding: 4px 14px;
    border-radius: 20px;
    font-size: var(--font-size-sm);
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    opacity: 0;
    transition: opacity 0.3s ease, transform 0.3s ease;
    transform: translateX(-50%) translateY(10px);
    white-space: nowrap;
    z-index: 2;
}

.character-bg-item:hover .character-label {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

/* Overlay Content for Characters Slide */
.slide-content-overlay {
    position: relative;
    z-index: 10;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100%;
    padding: var(--space-2xl);
    pointer-events: none;
}

.slide-content-overlay .slide-info-centered {
    pointer-events: auto;
}

.slide-info-centered {
    background: rgba(10, 10, 10, 0.85);
    backdrop-filter: blur(16px);
    border: 1px solid rgba(255, 215, 0, 0.3);
    -webkit-backdrop-filter: blur(12px);
    padding: var(--space-2xl);
    border-radius: var(--radius-xl);
    box-shadow: 0 8px 32px rgba(107, 70, 193, 0.15);
    text-align: center;
    max-width: 480px;
}

.slide-info-centered .portfolio-title {
    color: #FFD700 !important;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    text-shadow: 2px 2px 0 rgba(255, 0, 128, 0.4);
}

.slide-info-centered .portfolio-description {
    color: rgba(255, 255, 255, 0.9) !important;
}

/* Carousel Navigation Buttons */
.carousel-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--background);
    border: 1px solid var(--border);
    color: var(--text-primary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-lg);
    transition: all var(--transition-base);
    z-index: 10;
}

.carousel-btn:hover {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
    transform: translateY(-50%) scale(1.1);
}

.carousel-prev {
    left: -24px;
}

.carousel-next {
    right: -24px;
}

/* Carousel Indicators */
.carousel-indicators {
    display: flex;
    justify-content: center;
    gap: var(--space-sm);
    margin-top: var(--space-xl);
}

.indicator {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--border);
    border: none;
    cursor: pointer;
    transition: all var(--transition-base);
}

.indicator:hover {
    background: var(--text-muted);
}

.indicator.active {
    background: var(--primary);
    width: 32px;
    border-radius: 6px;
}

/* Swipe Hint */
.swipe-hint {
    display: none;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    margin-top: var(--space-lg);
    color: var(--text-muted);
    font-size: var(--font-size-sm);
    animation: swipeHint 2s ease-in-out infinite;
}

@keyframes swipeHint {
    0%, 100% {
        opacity: 0.6;
        transform: translateX(0);
    }
    50% {
        opacity: 1;
        transform: translateX(8px);
    }
}

/* ===== About Section ===== */
.about {
    padding: 120px 0;
}

.about {
    background: var(--surface);
    position: relative;
    overflow: hidden;
}

/* Particle Canvas */
.particle-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
}

/* Brand Story */
.brand-story {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
    padding: var(--space-2xl) 0;
    position: relative;
    z-index: 1;
}

.brand-name {
    font-size: clamp(4rem, 12vw, 8rem);
    font-weight: 700;
    letter-spacing: -0.03em;
    margin-bottom: var(--space-2xl);
    line-height: 1;
}

.brand-hype {
    color: var(--text-primary);
}

.brand-dot {
    background: linear-gradient(135deg, #6366F1 0%, #8B5CF6 50%, #A855F7 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.brand-tagline {
    font-size: clamp(1.25rem, 3vw, 1.75rem);
    color: var(--text-primary);
    line-height: 1.6;
    margin-bottom: var(--space-3xl);
    font-weight: 400;
}

.brand-description {
    max-width: 600px;
    margin: 0 auto;
}

.brand-description p {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: var(--space-lg);
}

.brand-closing {
    font-size: var(--font-size-xl) !important;
    font-weight: 600;
    color: var(--text-primary) !important;
    margin-top: var(--space-xl);
}


/* ===== Contact Section ===== */
.contact {
    padding: 120px 0;
    background: var(--background);
}

.contact-wrapper {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: var(--space-3xl);
    align-items: start;
}

.contact-form {
    background: var(--surface);
    backdrop-filter: blur(10px);
    padding: var(--space-2xl);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border);
}

.form-group {
    margin-bottom: var(--space-lg);
}

.form-group label {
    display: block;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: var(--space-sm);
}

.required {
    color: #EF4444;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.875rem 1rem;
    font-size: var(--font-size-base);
    font-family: inherit;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-primary);
    transition: border-color var(--transition-fast);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--text-muted);
}

.contact-info h3 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-xl);
}

.info-item {
    display: flex;
    gap: var(--space-lg);
    margin-bottom: var(--space-xl);
}

.info-icon {
    font-size: 1.5rem;
    flex-shrink: 0;
}

.info-item strong {
    display: block;
    color: var(--text-primary);
    margin-bottom: var(--space-xs);
}

.info-item p {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* ===== Footer ===== */
.footer {
    background: var(--text-primary);
    color: var(--background);
    padding: 60px 0 30px;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: var(--space-3xl);
    margin-bottom: var(--space-3xl);
}

.footer-logo {
    height: 48px;
    margin-bottom: var(--space-md);
    filter: brightness(0) invert(1);
    opacity: 0.9;
}

.footer-brand p {
    color: var(--text-muted);
    line-height: 1.6;
}

.footer-links h4,
.footer-contact h4 {
    font-size: var(--font-size-base);
    font-weight: 600;
    margin-bottom: var(--space-lg);
    color: var(--background);
}

.footer-links ul {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.footer-links a {
    color: var(--text-muted);
    transition: color var(--transition-fast);
}

.footer-links a:hover {
    color: var(--background);
}

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

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: var(--space-xl);
    text-align: center;
}

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

/* ===== Responsive Design ===== */
@media (max-width: 1024px) {
    /* Portfolio Carousel Responsive */
    .slide-content,
    .carousel-slide:nth-child(even) .slide-content {
        grid-template-columns: 1fr;
        gap: var(--space-xl);
        text-align: center;
    }

    .slide-image {
        max-width: 280px;
        margin: 0 auto;
    }

    /* 모바일에서는 짝수 슬라이드도 동일하게 */
    .carousel-slide:nth-child(even) .slide-image,
    .carousel-slide:nth-child(even) .slide-info {
        order: unset;
    }

    .carousel-slide:nth-child(even) .slide-info {
        text-align: center;
    }

    .portfolio-tech,
    .carousel-slide:nth-child(even) .portfolio-tech,
    .carousel-slide:nth-child(even) .emotion-palette,
    .carousel-slide:nth-child(even) .feature-highlights {
        justify-content: center;
    }

    .emotion-palette {
        justify-content: center;
    }

    .feature-highlights {
        max-width: 400px;
        margin: var(--space-lg) auto 0;
    }

    /* Character Background Grid - Tablet */
    .slide-content-overlay {
        padding: var(--space-xl);
    }

    .slide-info-centered {
        padding: var(--space-xl);
        max-width: 400px;
    }

    .carousel-btn {
        display: none;
    }

    .swipe-hint {
        display: flex;
    }

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

    .footer-content {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    :root {
        --font-size-4xl: 2rem;
        --font-size-3xl: 1.75rem;
    }

    .nav-menu {
        position: fixed;
        top: var(--navbar-height);
        left: 0;
        right: 0;
        background: var(--surface);
        flex-direction: column;
        padding: var(--space-xl);
        gap: var(--space-lg);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition-base);
        box-shadow: var(--shadow-lg);
    }

    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    .nav-toggle {
        display: flex;
    }

    .nav-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }

    .nav-toggle.active span:nth-child(2) {
        opacity: 0;
    }

    .nav-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -5px);
    }

    .hero-subtitle br {
        display: none;
    }

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

    /* Brand Story Mobile */
    .brand-story {
        padding: var(--space-xl) 0;
    }

    .brand-name {
        margin-bottom: var(--space-xl);
    }

    .brand-tagline {
        margin-bottom: var(--space-2xl);
    }

    .section-dark.services .service-card {
        padding: var(--space-xl);
    }

    /* Portfolio Mobile */
    .carousel-slide {
        padding: var(--space-lg);
    }

    .slide-image {
        max-width: 240px;
    }

    .portfolio-title {
        font-size: var(--font-size-2xl);
    }

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

    .emotion-dot {
        width: 28px;
        height: 28px;
    }

    /* Character Background Grid - Mobile */
    .character-bg-grid {
        grid-template-columns: repeat(4, 1fr);
        grid-template-rows: repeat(2, 1fr);
    }

    .slide-content-overlay {
        padding: var(--space-lg);
    }

    .slide-info-centered {
        padding: var(--space-lg);
        max-width: 90%;
    }

    .slide-info-centered .portfolio-title {
        font-size: var(--font-size-xl);
    }

    .slide-info-centered .portfolio-description {
        font-size: var(--font-size-sm);
    }

    .character-label {
        font-size: var(--font-size-xs);
        padding: 2px 8px;
    }

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

    .footer-brand {
        display: flex;
        flex-direction: column;
        align-items: center;
    }
}

@media (max-width: 480px) {
    .hero-actions {
        flex-direction: column;
    }

    .hero-actions .btn {
        width: 100%;
    }
}

/* ===== Animations ===== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate-fade-in-up {
    animation: fadeInUp 0.6s ease forwards;
}

/* ===== Form Submission States ===== */
.form-success {
    background: #10B981;
    color: white;
    padding: var(--space-lg);
    border-radius: var(--radius-md);
    text-align: center;
    margin-top: var(--space-lg);
}

.form-error {
    background: #EF4444;
    color: white;
    padding: var(--space-lg);
    border-radius: var(--radius-md);
    text-align: center;
    margin-top: var(--space-lg);
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}