:root {
    --bg: #070a12;
    --surface: rgba(255, 255, 255, 0.06);
    --surface-2: rgba(255, 255, 255, 0.09);
    --border: rgba(255, 255, 255, 0.12);
    --text: rgba(255, 255, 255, 0.92);
    --muted: rgba(255, 255, 255, 0.68);
    --brand: #6aa9ff;
    --brand-2: #9a6bff;
    --shadow: 0 18px 60px rgba(0, 0, 0, 0.55);
    --radius: 16px;
}

* { box-sizing: border-box; }

html, body {
    height: 100%;
}

body {
    margin: 0;
    font-family: 'Noto Sans KR', 'Roboto', system-ui, -apple-system, Segoe UI, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
}

a { color: inherit; }

body::before {
    content: "";
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: -1;
    background:
        radial-gradient(1200px 800px at 20% 0%, rgba(106, 169, 255, 0.18), transparent 60%),
        radial-gradient(1000px 700px at 95% 10%, rgba(154, 107, 255, 0.14), transparent 62%),
        linear-gradient(135deg, rgba(106, 169, 255, 0.06), rgba(154, 107, 255, 0.05));
}

.container {
    width: min(1100px, calc(100% - 48px));
    margin: 0 auto;
}

.skip-link {
    position: absolute;
    left: -999px;
    top: 8px;
    padding: 10px 12px;
    background: rgba(255, 255, 255, 0.95);
    color: #0b1020;
    border-radius: 10px;
    z-index: 9999;
}
.skip-link:focus {
    left: 16px;
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    backdrop-filter: blur(14px);
    background: rgba(7, 10, 18, 0.55);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 14px 0;
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    font-weight: 700;
    letter-spacing: 0.2px;
}
.brand-mark {
    width: 12px;
    height: 12px;
    border-radius: 6px;
    background: linear-gradient(135deg, var(--brand), var(--brand-2));
    box-shadow: 0 0 0 4px rgba(106, 169, 255, 0.18);
}
.brand-text { opacity: 0.95; }

.nav {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    justify-content: flex-end;
}
.nav a {
    text-decoration: none;
    color: var(--muted);
    padding: 8px 10px;
    border-radius: 10px;
    transition: background 160ms ease, color 160ms ease;
}
.nav a:hover {
    background: rgba(255, 255, 255, 0.06);
    color: var(--text);
}

.hero {
    position: relative;
    padding: 28px 0 10px;
}
.hero-inner {
    display: grid;
    grid-template-columns: 1.4fr 0.9fr;
    gap: 22px;
    align-items: stretch;
}
.hero-text h1 {
    margin: 10px 0 10px;
    font-size: clamp(2.2rem, 5vw, 3.4rem);
    letter-spacing: -0.02em;
}
.kicker {
    margin: 0;
    color: var(--muted);
    letter-spacing: 0.08em;
    text-transform: uppercase;
    font-size: 0.82rem;
}
.subtitle {
    margin: 0 0 18px;
    color: var(--muted);
    max-width: 56ch;
}
.hero-card {
    border-radius: var(--radius);
    border: 1px solid var(--border);
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.07), rgba(255, 255, 255, 0.04));
    box-shadow: var(--shadow);
    padding: 18px;
    display: grid;
    gap: 14px;
}
.stat-label {
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.92rem;
}
.stat-value {
    font-weight: 700;
    margin-top: 4px;
}

.hero-glow {
    display: none;
}

.modal-backdrop {
    position: fixed;
    inset: 0;
    display: none;
    place-items: center;
    padding: 18px;
    background: rgba(0, 0, 0, 0.68);
    backdrop-filter: blur(10px);
    z-index: 200;
}
.modal-backdrop[data-open="true"] { display: grid; }

.modal {
    width: min(920px, 100%);
    border-radius: var(--radius);
    border: 1px solid rgba(255, 255, 255, 0.14);
    background: rgba(7, 10, 18, 0.92);
    box-shadow: var(--shadow);
    overflow: hidden;
}
.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    padding: 12px 14px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}
.modal-title {
    font-weight: 800;
    letter-spacing: -0.01em;
}
.modal-close {
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.14);
    border-radius: 10px;
    color: rgba(255, 255, 255, 0.9);
    padding: 8px 10px;
    cursor: pointer;
}
.modal-close:hover {
    background: rgba(255, 255, 255, 0.09);
}
.modal-body {
    aspect-ratio: 16 / 9;
    background: black;
}
.modal-body iframe {
    width: 100%;
    height: 100%;
    border: 0;
}

.toast {
    position: fixed;
    left: 50%;
    bottom: 18px;
    transform: translateX(-50%);
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.14);
    border-radius: 999px;
    padding: 10px 12px;
    color: rgba(255, 255, 255, 0.92);
    z-index: 250;
    box-shadow: 0 18px 60px rgba(0, 0, 0, 0.55);
    display: none;
}
.toast[data-show="true"] { display: block; }

.section {
    padding: 16px 0;
}
.section-head {
    display: grid;
    gap: 6px;
    margin-bottom: 14px;
}
.section-head h2 {
    margin: 0;
    font-size: 1.6rem;
    letter-spacing: -0.01em;
}
.section-head p {
    margin: 0;
    color: var(--muted);
}

.grid.two {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
}

.card {
    border-radius: var(--radius);
    border: 1px solid var(--border);
    background: rgba(255, 255, 255, 0.05);
    padding: 16px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.25);
}
.card h3 {
    margin: 0 0 10px;
    font-size: 1.1rem;
}
.bullets {
    margin: 0;
    padding-left: 18px;
    color: var(--muted);
}
.bullets li { margin: 6px 0; }

.chips {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}
.chip {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 12px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.86);
    font-weight: 500;
    font-size: 0.95rem;
}

.cta-row {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 14px;
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, 0.14);
    text-decoration: none;
    font-weight: 600;
    transition: transform 120ms ease, background 160ms ease, border-color 160ms ease;
    user-select: none;
}
.btn:hover { transform: translateY(-1px); }
.btn.primary {
    background: linear-gradient(135deg, var(--brand), var(--brand-2));
    border-color: rgba(255, 255, 255, 0.16);
}
.btn.ghost {
    background: rgba(255, 255, 255, 0.04);
}
.btn.ghost:hover {
    background: rgba(255, 255, 255, 0.07);
}

.toolbar {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
    margin: 10px 0 16px;
}
.field {
    display: grid;
    gap: 6px;
    min-width: min(520px, 100%);
}
.field-label {
    color: rgba(255, 255, 255, 0.65);
    font-size: 0.9rem;
}
.field input {
    width: 100%;
    padding: 12px 12px;
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, 0.12);
    background: rgba(255, 255, 255, 0.04);
    color: var(--text);
    outline: none;
}
.field input:focus {
    border-color: rgba(106, 169, 255, 0.55);
    box-shadow: 0 0 0 4px rgba(106, 169, 255, 0.18);
}

.status {
    color: rgba(255, 255, 255, 0.65);
    font-size: 0.95rem;
    display: none;
}

.projects {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
    align-items: start;
}

.project {
    border-radius: var(--radius);
    border: 1px solid rgba(255, 255, 255, 0.12);
    background:
        linear-gradient(180deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.03)),
        rgba(255, 255, 255, 0.04);
    padding: 22px;
    display: grid;
    gap: 14px;
    align-content: start;
    box-shadow: 0 18px 40px rgba(0, 0, 0, 0.28);
    transition: transform 160ms ease, border-color 160ms ease, background 160ms ease;
}
.project:hover {
    transform: translateY(-2px);
    background:
        linear-gradient(180deg, rgba(106, 169, 255, 0.12), rgba(255, 255, 255, 0.04)),
        rgba(255, 255, 255, 0.055);
    border-color: rgba(106, 169, 255, 0.4);
}
.project-title {
    margin: 0;
    font-weight: 800;
    letter-spacing: -0.01em;
    font-size: 1.3rem;
    line-height: 1.35;
}
.project-summary {
    margin: -4px 0 0;
    color: rgba(255, 255, 255, 0.92);
    font-weight: 600;
}
.project-badge {
    display: inline-flex;
    width: fit-content;
    max-width: 100%;
    padding: 7px 12px;
    border-radius: 999px;
    border: 1px solid rgba(106, 169, 255, 0.34);
    background: rgba(106, 169, 255, 0.12);
    color: #dbe9ff;
    font-size: 0.82rem;
    font-weight: 700;
    line-height: 1.4;
}
.project-copy-label {
    color: rgba(255, 255, 255, 0.55);
    font-size: 0.8rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}
.project-desc {
    color: var(--muted);
    margin: 0;
}
.project-link-copy {
    margin: -4px 0 0;
    color: rgba(255, 255, 255, 0.74);
    font-size: 0.94rem;
}
.project-link-copy a {
    color: rgba(106, 169, 255, 0.95);
    text-decoration: none;
}
.project-link-copy a:hover {
    text-decoration: underline;
}
.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}
.tag {
    font-size: 0.84rem;
    padding: 6px 10px;
    border-radius: 999px;
    border: 1px solid rgba(255, 255, 255, 0.12);
    background: rgba(255, 255, 255, 0.03);
    color: rgba(255, 255, 255, 0.78);
}
.project-actions {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}
.project-action {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 112px;
    padding: 10px 14px;
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, 0.14);
    color: rgba(255, 255, 255, 0.9);
    text-decoration: none;
    font-weight: 700;
    cursor: pointer;
    transition: transform 120ms ease, background 160ms ease, border-color 160ms ease;
}
.project-action:hover {
    transform: translateY(-1px);
}
.project-action.primary {
    background: linear-gradient(135deg, var(--brand), var(--brand-2));
    color: white;
}
.project-action.ghost {
    background: rgba(255, 255, 255, 0.04);
}
.project-action.ghost:hover {
    background: rgba(255, 255, 255, 0.09);
}

.contact-row {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.note {
    margin: 12px 0 0;
    color: rgba(255, 255, 255, 0.58);
    font-size: 0.92rem;
}

.site-footer {
    margin-top: 22px;
    padding: 18px 0 34px;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    background: rgba(7, 10, 18, 0.35);
}
.footer-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    color: rgba(255, 255, 255, 0.62);
}
.footer-note {
    margin: 10px 0 0;
    color: rgba(255, 255, 255, 0.46);
    font-size: 0.88rem;
}
.to-top {
    text-decoration: none;
    color: rgba(255, 255, 255, 0.7);
}
.to-top:hover { color: white; }

@media (max-width: 980px) {
    .hero-inner { grid-template-columns: 1fr; }
    .projects { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 680px) {
    .container { width: calc(100% - 32px); }
    .grid.two { grid-template-columns: 1fr; }
    .projects { grid-template-columns: 1fr; }
    .nav { gap: 6px; }
    .nav a { padding: 8px 8px; }
}