/* ZeroDay — 영주고 기능반 사이버보안팀
   flat / dark / terminal : 그라데이션·그림자·둥근모서리·알약배지 없음 */

*,
*::before,
*::after {
  box-sizing: border-box;
}

:root {
  --bg: #0a0c0f;
  --surface: #0f1318;
  --surface-2: #12161c;
  --line: #20262e;
  --line-2: #2c333d;

  --text: #e8ebee;
  --muted: #98a2ac;
  --faint: #626c76;

  --gold: #d6ad5f;
  --green: #84c2a0;
  --blue: #79aede;
  --red: #d98a72;

  --mono: "JetBrains Mono", ui-monospace, "SFMono-Regular", "Cascadia Mono",
    "Consolas", monospace;
  --sans: "Pretendard Variable", "Pretendard", "Noto Sans KR",
    "Apple SD Gothic Neo", "Malgun Gothic", system-ui, sans-serif;

  --max: 1120px;
  --pad: clamp(18px, 4.5vw, 40px);
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.72;
  letter-spacing: -0.005em;
  word-break: keep-all;
  -webkit-font-smoothing: antialiased;
}

body.menu-open {
  overflow: hidden;
}

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

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

button {
  font: inherit;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

b {
  color: var(--text);
  font-weight: 700;
}

/* ── Header ───────────────────────────────── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 13px var(--pad);
  background: rgba(10, 12, 15, 0.9);
  border-bottom: 1px solid transparent;
  backdrop-filter: blur(8px);
  transition: border-color 160ms linear;
}

.site-header.is-scrolled {
  border-bottom-color: var(--line);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.brand-logo {
  width: 34px;
  height: 34px;
  object-fit: contain;
}

.brand-text {
  display: grid;
  line-height: 1.2;
}

.brand-text strong {
  font-family: var(--mono);
  font-size: 1.02rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.brand-text small {
  color: var(--faint);
  font-size: 0.72rem;
}

.site-nav {
  display: flex;
  gap: 2px;
  font-family: var(--mono);
}

.site-nav a {
  padding: 8px 12px;
  color: var(--muted);
  font-size: 0.86rem;
  border-bottom: 2px solid transparent;
  transition: color 140ms linear, border-color 140ms linear;
}

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

.site-nav a.is-active {
  color: var(--gold);
  border-bottom-color: var(--gold);
}

.menu-button {
  display: none;
  width: 40px;
  height: 40px;
  border: 1px solid var(--line-2);
  background: transparent;
  color: var(--text);
  cursor: pointer;
}

.menu-button span {
  display: block;
  width: 18px;
  height: 2px;
  margin: 4px auto;
  background: currentColor;
  transition: transform 180ms ease, opacity 180ms ease;
}

.menu-button[aria-expanded="true"] span:first-child {
  transform: translateY(3px) rotate(45deg);
}

.menu-button[aria-expanded="true"] span:last-child {
  transform: translateY(-3px) rotate(-45deg);
}

/* ── Section shell & headings ─────────────── */
.section-shell {
  width: 100%;
  max-width: var(--max);
  margin: 0 auto;
  padding: clamp(58px, 8vw, 96px) var(--pad);
  border-top: 1px solid var(--line);
}

.hero.section-shell {
  border-top: 0;
}

.section-head {
  margin-bottom: 38px;
}

.section-head-split {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 28px;
}

.section-tag {
  display: block;
  margin-bottom: 12px;
  font-family: var(--mono);
  font-size: 0.84rem;
  font-weight: 500;
  color: var(--gold);
}

.section-note {
  max-width: 320px;
  margin: 0;
  color: var(--muted);
  font-size: 0.92rem;
}

h2 {
  margin: 0;
  font-size: clamp(1.5rem, 2.7vw, 2.05rem);
  font-weight: 700;
  line-height: 1.32;
  letter-spacing: -0.02em;
}

h3 {
  font-size: 1.04rem;
  font-weight: 700;
}

/* ── Hero ─────────────────────────────────── */
.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(320px, 0.78fr);
  gap: clamp(28px, 5vw, 56px);
  align-items: center;
  padding-top: clamp(48px, 7vw, 84px) !important;
}

.kicker {
  margin: 0 0 18px;
  font-family: var(--mono);
  font-size: 0.9rem;
  color: var(--gold);
}

.hero h1 {
  margin: 0;
  font-family: var(--mono);
  font-size: clamp(3.6rem, 10vw, 6.4rem);
  font-weight: 700;
  line-height: 0.95;
  letter-spacing: -0.04em;
}

.hero-sub {
  margin: 16px 0 18px;
  font-size: clamp(1.1rem, 2.2vw, 1.4rem);
  font-weight: 600;
  color: var(--text);
  letter-spacing: -0.01em;
}

.hero-lead {
  max-width: 540px;
  margin: 0 0 30px;
  color: var(--muted);
  font-size: 1rem;
  line-height: 1.78;
}

.hero-actions,
.contact-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 22px;
  border: 1px solid var(--line-2);
  font-family: var(--mono);
  font-size: 0.9rem;
  font-weight: 500;
  transition: border-color 140ms linear, background-color 140ms linear,
    color 140ms linear;
}

.button-primary {
  border-color: var(--gold);
  background: var(--gold);
  color: #15110a;
  font-weight: 700;
}

.button-primary:hover {
  background: #e2bd72;
  border-color: #e2bd72;
}

.button-ghost {
  background: transparent;
  color: var(--text);
}

.button-ghost:hover {
  border-color: var(--gold);
  color: var(--gold);
}

.hero-meta {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  max-width: 560px;
  margin: 36px 0 0;
  border-top: 1px solid var(--line);
}

.hero-meta div {
  padding: 16px 14px 0 0;
}

.hero-meta dt {
  margin-bottom: 4px;
  font-family: var(--mono);
  font-size: 0.74rem;
  color: var(--faint);
}

.hero-meta dd {
  margin: 0;
  font-size: 0.9rem;
  font-weight: 600;
  color: #d4dae0;
}

/* ── Log box (terminal file) ──────────────── */
.logbox {
  border: 1px solid var(--line);
  background: var(--surface);
}

.logbox-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 11px 16px;
  border-bottom: 1px solid var(--line);
  background: var(--surface-2);
  font-family: var(--mono);
  font-size: 0.78rem;
}

.logbox-name {
  color: var(--muted);
}

.logbox-meta {
  color: var(--faint);
}

.loglist {
  margin: 0;
  padding: 6px;
  list-style: none;
}

.loglist li {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 14px;
  padding: 12px 10px;
  border-bottom: 1px solid var(--line);
}

.loglist li:last-child {
  border-bottom: 0;
}

.log-date {
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--faint);
}

.log-msg {
  font-size: 0.92rem;
  color: #d6dce2;
}

/* ── Tags (bracketed, flat) ───────────────── */
.tag {
  font-family: var(--mono);
  font-size: 0.8rem;
  font-weight: 500;
  white-space: nowrap;
  color: var(--muted);
}

.tag::before {
  content: "[";
  opacity: 0.55;
}

.tag::after {
  content: "]";
  opacity: 0.55;
}

.tag-done {
  color: var(--green);
}

.tag-run {
  color: var(--gold);
}

.tag-edit {
  color: var(--blue);
}

.tag-todo {
  color: var(--faint);
}

/* ── About ────────────────────────────────── */
.about-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 24px;
}

.prose p {
  color: #c5cdd5;
  font-size: 1rem;
}

.prose p:last-child {
  margin-bottom: 0;
}

.callout {
  margin-top: 24px;
  padding: 16px 18px;
  border-left: 2px solid var(--gold);
  background: var(--surface);
  color: var(--muted);
  font-size: 0.92rem;
}

.callout-label {
  display: block;
  margin-bottom: 4px;
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--gold);
}

.points {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
  border: 1px solid var(--line);
}

.points li {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 12px;
  padding: 22px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.points li:nth-child(2n) {
  border-right: 0;
}

.points li:nth-last-child(-n + 2) {
  border-bottom: 0;
}

.point-num {
  font-family: var(--mono);
  font-size: 0.86rem;
  color: var(--gold);
}

.points h3 {
  margin-bottom: 5px;
}

.points p {
  margin: 0;
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.6;
}

/* ── Fields ───────────────────────────────── */
.field-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border: 1px solid var(--line);
}

.field-card {
  padding: 26px 24px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  transition: background-color 140ms linear;
}

.field-card:nth-child(3n) {
  border-right: 0;
}

.field-card:nth-last-child(-n + 3) {
  border-bottom: 0;
}

.field-card:hover {
  background: var(--surface);
}

.field-id {
  display: inline-block;
  margin-bottom: 14px;
  font-family: var(--mono);
  font-size: 0.82rem;
  color: var(--gold);
}

.field-id::before {
  content: "> ";
  color: var(--faint);
}

.field-card h3 {
  margin-bottom: 8px;
  font-size: 1.1rem;
}

.field-card p {
  margin: 0;
  color: var(--muted);
  font-size: 0.91rem;
  line-height: 1.62;
}

/* ── Table ────────────────────────────────── */
.table-wrap {
  border: 1px solid var(--line);
  overflow-x: auto;
}

.log-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.92rem;
}

.log-table th,
.log-table td {
  padding: 15px 18px;
  text-align: left;
  border-bottom: 1px solid var(--line);
}

.log-table th {
  font-family: var(--mono);
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--faint);
  background: var(--surface-2);
}

.log-table td {
  color: #d2d9e0;
}

.log-table td:first-child {
  font-family: var(--mono);
  color: var(--muted);
  white-space: nowrap;
}

.log-table tbody tr:hover {
  background: var(--surface);
}

.log-table tr:last-child td {
  border-bottom: 0;
}

/* ── Portfolio ────────────────────────────── */
.portfolio-layout {
  display: grid;
  grid-template-columns: 220px minmax(0, 1fr);
  gap: 22px;
  align-items: start;
}

.project-nav {
  position: sticky;
  top: 78px;
  display: grid;
  border: 1px solid var(--line);
  font-family: var(--mono);
}

.project-nav a {
  padding: 14px 16px;
  border-bottom: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.84rem;
  transition: color 140ms linear, background-color 140ms linear;
}

.project-nav a:last-child {
  border-bottom: 0;
}

.project-nav a:hover {
  color: var(--gold);
  background: var(--surface);
}

.project-list {
  display: grid;
  gap: 18px;
}

.project-item {
  display: grid;
  grid-template-columns: 260px minmax(0, 1fr);
  border: 1px solid var(--line);
}

.project-media {
  display: grid;
  place-items: center;
  min-height: 230px;
  padding: 20px;
  border-right: 1px solid var(--line);
  background: var(--surface);
  background-image: repeating-linear-gradient(
    45deg,
    transparent 0 9px,
    rgba(255, 255, 255, 0.014) 9px 10px
  );
  color: var(--faint);
  font-family: var(--mono);
  font-size: 0.82rem;
  text-align: center;
}

.project-body {
  padding: 28px;
}

.project-period {
  margin-bottom: 8px;
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--gold);
}

.project-body h3 {
  margin-bottom: 18px;
  font-size: 1.28rem;
}

.project-body dl {
  display: grid;
  gap: 11px;
  margin: 0;
}

.project-body dl div {
  display: grid;
  grid-template-columns: 64px 1fr;
  gap: 16px;
}

.project-body dt {
  font-family: var(--mono);
  font-size: 0.82rem;
  color: var(--faint);
}

.project-body dd {
  margin: 0;
  color: #c8d0d8;
  font-size: 0.91rem;
  line-height: 1.58;
}

/* ── Members / roles ──────────────────────── */
.role-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  border: 1px solid var(--line);
}

.role-card {
  padding: 24px;
  border-right: 1px solid var(--line);
}

.role-grid > .role-card:last-child {
  border-right: 0;
}

.role-card-wide {
  grid-column: span 2;
  border-right: 0;
  border-top: 1px solid var(--line);
}

.role-id {
  display: inline-block;
  margin-bottom: 14px;
  font-family: var(--mono);
  font-size: 0.82rem;
  color: var(--gold);
}

.role-card h3 {
  margin-bottom: 8px;
  font-size: 1.08rem;
}

.role-card p {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.6;
}

.role-card ul {
  margin: 16px 0 0;
  padding-left: 16px;
  color: var(--muted);
  font-size: 0.88rem;
}

.role-card li {
  margin-bottom: 5px;
}

.role-card li::marker {
  color: var(--gold);
}

.role-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 18px;
  font-family: var(--mono);
}

.role-chips span {
  padding: 5px 12px;
  border: 1px solid var(--line-2);
  color: #cad3db;
  font-size: 0.8rem;
}

/* ── Records ──────────────────────────────── */
.records {
  display: grid;
  gap: 28px;
}

.record-year {
  display: grid;
  grid-template-columns: 90px minmax(0, 1fr);
  gap: 24px;
}

.year-label {
  position: sticky;
  top: 78px;
  align-self: start;
  font-family: var(--mono);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--gold);
}

.record-list {
  display: grid;
  border-top: 1px solid var(--line);
}

.record-row {
  display: grid;
  grid-template-columns: 64px minmax(160px, 1fr) 96px minmax(220px, 1.3fr);
  gap: 18px;
  align-items: baseline;
  padding: 17px 0;
  border-bottom: 1px solid var(--line);
}

.record-date {
  font-family: var(--mono);
  font-size: 0.84rem;
  color: var(--gold);
}

.record-row strong {
  font-size: 0.96rem;
  font-weight: 700;
}

.record-row em {
  width: max-content;
  padding: 2px 9px;
  border: 1px solid var(--line-2);
  font-family: var(--mono);
  font-size: 0.74rem;
  font-style: normal;
  color: var(--muted);
}

.record-row p {
  margin: 0;
  color: var(--muted);
  font-size: 0.88rem;
}

/* ── Contact ──────────────────────────────── */
.contact-panel {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 32px;
  align-items: start;
}

.contact-intro > p {
  color: var(--muted);
  font-size: 1rem;
}

.contact-info {
  display: grid;
  border: 1px solid var(--line);
}

.contact-info div {
  display: grid;
  gap: 4px;
  padding: 18px 20px;
  border-bottom: 1px solid var(--line);
}

.contact-info div:last-child {
  border-bottom: 0;
}

.contact-info dt {
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--gold);
}

.contact-info dd {
  margin: 0;
  color: var(--muted);
  font-size: 0.9rem;
}

/* ── Footer ───────────────────────────────── */
.site-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 14px;
  max-width: var(--max);
  margin: 0 auto;
  padding: 26px var(--pad) 40px;
  border-top: 1px solid var(--line);
}

.footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--muted);
  font-size: 0.86rem;
}

.footer-side {
  display: inline-flex;
  align-items: center;
  gap: 18px;
  font-family: var(--mono);
  font-size: 0.82rem;
  color: var(--faint);
}

.footer-side a:hover {
  color: var(--gold);
}

/* ── Reveal (subtle) ──────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(10px);
  transition: opacity 450ms ease, transform 450ms ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *::before,
  *::after {
    transition-duration: 1ms !important;
  }
  .reveal {
    opacity: 1;
    transform: none;
  }
}

/* ── Responsive ───────────────────────────── */
@media (max-width: 940px) {
  .hero {
    grid-template-columns: 1fr;
    gap: 34px;
    padding-top: 32px !important;
  }

  .logbox {
    max-width: 560px;
  }

  .about-layout,
  .contact-panel {
    grid-template-columns: 1fr;
  }

  .field-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .field-card:nth-child(3n) {
    border-right: 1px solid var(--line);
  }

  .field-card:nth-child(2n) {
    border-right: 0;
  }

  .field-card:nth-last-child(-n + 3) {
    border-bottom: 1px solid var(--line);
  }

  .field-card:nth-last-child(-n + 2) {
    border-bottom: 0;
  }

  .portfolio-layout {
    grid-template-columns: 1fr;
  }

  .project-nav {
    position: static;
    grid-auto-flow: column;
    grid-auto-columns: max-content;
    overflow-x: auto;
  }

  .project-nav a {
    border-bottom: 0;
    border-right: 1px solid var(--line);
    white-space: nowrap;
  }

  .role-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .role-card:nth-child(2n) {
    border-right: 0;
  }

  .role-card:nth-child(n + 3) {
    border-top: 1px solid var(--line);
  }

  .role-card-wide {
    grid-column: span 2;
  }
}

@media (max-width: 680px) {
  .menu-button {
    display: block;
  }

  .site-nav {
    position: fixed;
    top: 62px;
    left: var(--pad);
    right: var(--pad);
    flex-direction: column;
    gap: 0;
    border: 1px solid var(--line-2);
    background: #0c0f13;
    transform: translateY(-8px);
    opacity: 0;
    visibility: hidden;
    transition: transform 160ms ease, opacity 160ms ease, visibility 160ms ease;
  }

  .site-nav.is-open {
    transform: none;
    opacity: 1;
    visibility: visible;
  }

  .site-nav a {
    padding: 14px;
    border-bottom: 1px solid var(--line);
  }

  .site-nav a.is-active {
    border-bottom-color: var(--line);
    padding-left: 11px;
    border-left: 3px solid var(--gold);
  }

  .site-nav a:last-child {
    border-bottom: 0;
  }

  .section-head-split {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }

  .section-note {
    max-width: none;
  }

  .hero-meta {
    grid-template-columns: 1fr;
  }

  .hero-meta div {
    padding: 13px 0;
    border-bottom: 1px solid var(--line);
  }

  .hero-meta div:last-child {
    border-bottom: 0;
  }

  .loglist li {
    grid-template-columns: auto 1fr;
    row-gap: 6px;
  }

  .loglist .tag {
    grid-column: 1 / -1;
  }

  .points,
  .field-grid {
    grid-template-columns: 1fr;
  }

  .points li,
  .points li:nth-child(2n) {
    border-right: 0;
  }

  .field-card,
  .field-card:nth-child(2n),
  .field-card:nth-child(3n) {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .field-card:last-child {
    border-bottom: 0;
  }

  /* 표 → 카드 */
  .table-wrap {
    border: 0;
    overflow: visible;
  }

  .log-table,
  .log-table tbody,
  .log-table tr,
  .log-table td {
    display: block;
  }

  .log-table thead {
    display: none;
  }

  .log-table tbody {
    display: grid;
    gap: 12px;
  }

  .log-table tr {
    border: 1px solid var(--line);
  }

  .log-table td {
    display: grid;
    grid-template-columns: 70px 1fr;
    gap: 14px;
    padding: 11px 15px;
    border-bottom: 1px solid var(--line);
  }

  .log-table tr td:last-child {
    border-bottom: 0;
  }

  .log-table td::before {
    content: attr(data-label);
    font-family: var(--mono);
    font-size: 0.78rem;
    color: var(--faint);
  }

  .project-item {
    grid-template-columns: 1fr;
  }

  .project-media {
    min-height: 150px;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .project-body dl div {
    grid-template-columns: 1fr;
    gap: 2px;
  }

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

  .role-card,
  .role-card:nth-child(2n) {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .role-card:nth-child(n + 3) {
    border-top: 0;
  }

  .role-card-wide {
    grid-column: auto;
    border-bottom: 0;
  }

  .record-year {
    grid-template-columns: 1fr;
    gap: 10px;
  }

  .year-label {
    position: static;
  }

  .record-row {
    grid-template-columns: 1fr;
    gap: 5px;
  }

  .site-footer {
    flex-direction: column;
    align-items: flex-start;
  }
}