:root {
    --bg: #f7f7f7;
    --bg-alt: #efefef;
    --panel: rgba(255, 255, 255, 0.9);
    --panel-strong: rgba(255, 255, 255, 0.96);
    --border: rgba(0, 0, 0, 0.09);
    --text: #111111;
    --muted: #4e4e4e;
    --faint: #767676;
    --accent: #111111;
    --accent-2: #2a2a2a;
    --accent-3: #666666;
    --shadow: 0 18px 40px rgba(0, 0, 0, 0.08);
    --radius-xl: 32px;
    --radius-lg: 24px;
    --radius-md: 18px;
    --max: 1160px;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    min-height: 100vh;
    background:
        radial-gradient(circle at 12% 14%, rgba(0, 0, 0, 0.06), transparent 22%),
        radial-gradient(circle at 88% 10%, rgba(0, 0, 0, 0.04), transparent 20%),
        radial-gradient(circle at 50% 86%, rgba(0, 0, 0, 0.03), transparent 28%),
        linear-gradient(160deg, #ffffff 0%, #f7f7f7 48%, #efefef 100%);
    color: var(--text);
    font-family: "Noto Sans KR", sans-serif;
    overflow-x: hidden;
}

body::before,
body::after {
    content: "";
    position: fixed;
    inset: auto;
    width: 42rem;
    height: 42rem;
    border-radius: 50%;
    filter: blur(70px);
    opacity: 0.16;
    pointer-events: none;
    z-index: 0;
    animation: floatGlow 18s ease-in-out infinite;
}

body::before {
    left: -12rem;
    top: -14rem;
    background: rgba(0, 0, 0, 0.14);
}

body::after {
    right: -18rem;
    bottom: -18rem;
    background: rgba(0, 0, 0, 0.1);
    animation-delay: -7s;
}

.shell {
    position: relative;
    z-index: 1;
}

.wrap {
    width: min(var(--max), calc(100% - 2rem));
    margin: 0 auto;
}

.topbar {
    position: sticky;
    top: 0;
    z-index: 20;
    backdrop-filter: blur(18px);
    background: rgba(255, 255, 255, 0.82);
    border-bottom: 1px solid rgba(0, 0, 0, 0.07);
}

.topbar-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: 1rem 0;
}

.brand {
    display: inline-flex;
    align-items: center;
    text-decoration: none;
    color: var(--text);
}

.brand span {
    color: var(--faint);
    font-size: 0.86rem;
}

.nav {
    display: flex;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.nav a {
    color: var(--muted);
    text-decoration: none;
    font-size: 0.92rem;
    transition: color 0.2s ease, transform 0.2s ease;
}

.nav a:hover {
    color: var(--text);
    transform: translateY(-1px);
}

.hero {
    position: relative;
    padding: 5rem 0 2rem;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.4rem;
    align-items: stretch;
}

.hero-main,
.panel {
    border: 1px solid var(--border);
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.94), rgba(248, 248, 248, 0.9));
    box-shadow: var(--shadow);
    backdrop-filter: blur(18px);
}

.hero-main {
    border-radius: var(--radius-xl);
    padding: clamp(1.6rem, 3.2vw, 3rem);
    position: relative;
    overflow: hidden;
}

.hero-main::before {
    content: "";
    position: absolute;
    inset: -1px;
    background:
        linear-gradient(135deg, rgba(0, 0, 0, 0.06), transparent 30%),
        linear-gradient(225deg, rgba(0, 0, 0, 0.04), transparent 28%);
    pointer-events: none;
}

h1 {
    margin: 1rem 0 0.75rem;
    font-family: "Noto Sans KR", sans-serif;
    font-size: clamp(3rem, 8vw, 5.6rem);
    line-height: 0.96;
    letter-spacing: -0.05em;
    font-weight: 800;
}

.subtitle {
    margin: 0;
    max-width: 42rem;
    color: var(--muted);
    font-size: clamp(1rem, 1.8vw, 1.18rem);
    line-height: 1.8;
}

.name-badge {
    display: inline-flex;
    align-items: center;
    padding: 0.38rem 0.62rem;
    border-radius: 999px;
    border: 1px solid rgba(0, 0, 0, 0.12);
    background: rgba(0, 0, 0, 0.04);
    color: var(--accent);
    font-size: 0.88rem;
    font-weight: 700;
    line-height: 1.2;
    letter-spacing: 0;
    white-space: nowrap;
    min-width: max-content;
}

.hero-links {
    display: flex;
    flex-wrap: wrap;
    gap: 0.65rem;
    margin: 0.85rem 0 0.4rem;
}

.hero-link {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.58rem 0.8rem;
    border-radius: 999px;
    border: 1px solid rgba(0, 0, 0, 0.1);
    background: rgba(255, 255, 255, 0.8);
    color: var(--text);
    text-decoration: none;
    font-size: 0.9rem;
    transition: transform 0.2s ease, background 0.2s ease, border-color 0.2s ease;
}

.hero-link:hover {
    transform: translateY(-2px);
    background: rgba(0, 0, 0, 0.04);
    border-color: rgba(0, 0, 0, 0.16);
}

.section {
    padding: 1.5rem 0 0;
}

.section-grid {
    display: grid;
    grid-template-columns: repeat(12, minmax(0, 1fr));
    gap: 1.2rem;
}

.panel {
    border-radius: var(--radius-lg);
    padding: 1.35rem;
}

.panel h2 {
    margin: 0 0 0.9rem;
    font-family: "Noto Sans KR", sans-serif;
    font-size: 1.5rem;
    font-weight: 800;
    letter-spacing: -0.03em;
}

.panel p {
    margin: 0;
    color: var(--muted);
    line-height: 1.8;
}

.timeline {
    grid-column: span 12;
}

.timeline-list {
    list-style: none;
    padding: 0;
    margin: 1rem 0 0;
    display: grid;
    gap: 0.65rem;
}

.timeline-item {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 0.95rem;
    align-items: start;
    padding: 0.85rem 1rem;
    border-radius: 18px;
    background: rgba(255, 255, 255, 0.76);
    border: 1px solid rgba(0, 0, 0, 0.08);
}

.timeline-dot {
    width: 0.95rem;
    height: 0.95rem;
    margin-top: 0.34rem;
    border-radius: 50%;
    background: linear-gradient(180deg, #111111, #7a7a7a);
    box-shadow: 0 0 0 6px rgba(0, 0, 0, 0.05);
}

.timeline-item p {
    margin: 0;
    color: var(--muted);
    line-height: 1.5;
}

.projects {
    grid-column: span 12;
}

.project-card {
    display: grid;
    grid-template-columns: 160px minmax(0, 1fr);
    gap: 1.25rem;
    align-items: center;
    padding: 1rem;
    border-radius: 24px;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.94), rgba(246, 246, 246, 0.9));
    border: 1px solid rgba(0, 0, 0, 0.09);
}

.project-logo {
    width: 100%;
    aspect-ratio: 1 / 1;
    object-fit: cover;
    border-radius: 22px;
    background: #f2f2f2;
    border: 1px solid rgba(0, 0, 0, 0.08);
}

.project-content {
    display: grid;
    gap: 0.8rem;
}

.project-top {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    align-items: center;
    flex-wrap: wrap;
}

.project-title {
    margin: 0;
    font-size: 1.35rem;
    font-family: "Noto Sans KR", sans-serif;
    font-weight: 800;
}

.project-badge {
    display: inline-flex;
    align-items: center;
    padding: 0.45rem 0.75rem;
    border-radius: 999px;
    color: #ffffff;
    background: linear-gradient(135deg, #111111, #4a4a4a);
    font-size: 0.86rem;
    font-weight: 700;
}

.project-desc {
    color: var(--muted);
    line-height: 1.85;
}

.project-links {
    display: flex;
    flex-wrap: wrap;
    gap: 0.8rem;
}

.link {
    color: var(--text);
    text-decoration: none;
    padding: 0.72rem 0.95rem;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.8);
    border: 1px solid rgba(0, 0, 0, 0.1);
    transition: transform 0.2s ease, background 0.2s ease;
}

.link:hover {
    transform: translateY(-2px);
    background: rgba(0, 0, 0, 0.04);
}

.footer {
    padding: 2rem 0 3rem;
    color: var(--faint);
    text-align: center;
    font-size: 0.94rem;
}

.reveal {
    opacity: 0;
    transform: translateY(16px);
    animation: rise 0.8s ease forwards;
}

.delay-1 { animation-delay: 0.1s; }
.delay-2 { animation-delay: 0.2s; }
.delay-3 { animation-delay: 0.3s; }
.delay-4 { animation-delay: 0.42s; }
.delay-5 { animation-delay: 0.54s; }

.wave {
    position: absolute;
    left: 0;
    right: 0;
    bottom: -1px;
    opacity: 0.14;
    pointer-events: none;
}

.wave svg {
    display: block;
    width: 100%;
    height: auto;
}

.wave path {
    transform-origin: center;
    animation: waveDrift 18s ease-in-out infinite;
}

.wave path:nth-child(2) {
    animation-delay: -6s;
    opacity: 0.8;
}

.wave path:nth-child(3) {
    animation-delay: -12s;
    opacity: 0.6;
}

.cursor-glow {
    position: absolute;
    inset: auto auto 12% 52%;
    width: 10rem;
    height: 10rem;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(0, 0, 0, 0.08), transparent 68%);
    filter: blur(10px);
    pointer-events: none;
    animation: pulse 8s ease-in-out infinite;
}

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

@keyframes floatGlow {
    0%,
    100% {
        transform: translate3d(0, 0, 0) scale(1);
    }

    50% {
        transform: translate3d(24px, 18px, 0) scale(1.03);
    }
}

@keyframes waveDrift {
    0%,
    100% {
        transform: translateX(0) scaleY(1);
    }

    50% {
        transform: translateX(-1.5%) scaleY(1.04);
    }
}

@keyframes pulse {
    0%,
    100% {
        transform: scale(1);
        opacity: 0.45;
    }

    50% {
        transform: scale(1.08);
        opacity: 0.75;
    }
}

@media (max-width: 980px) {
    .hero-grid,
    .project-card,
    .section-grid {
        grid-template-columns: 1fr;
    }

    .timeline,
    .projects {
        grid-column: auto;
    }

    .project-card {
        align-items: start;
    }
}

@media (max-width: 720px) {
    .topbar-inner {
        flex-direction: column;
        align-items: flex-start;
    }

    .hero {
        padding-top: 3rem;
    }

    .hero-main,
    .panel,
    .project-card {
        border-radius: 22px;
    }

    h1 {
        font-size: clamp(2.6rem, 15vw, 4rem);
    }

    .project-logo {
        width: 100%;
        max-width: 220px;
    }
}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }

    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}