/* ============================================================
   AppleSeek.hk — Design tokens
   Style: Central (HK) minimal — glass-grid precision, restrained
   colour, one accent. No literal metaphor, just the discipline.
   ============================================================ */

:root {
  --ink: #14181c;
  --concrete: #eef0f1;
  --paper: #ffffff;
  --steel: #5b6670;
  --steel-soft: #8b949c;
  --line: #d3d6d8;
  --bauhinia: #9b1b30;

  --font-latin: 'IBM Plex Sans', -apple-system, sans-serif;
  --font-cjk: 'Noto Sans TC', var(--font-latin);
  --font-mono: 'IBM Plex Mono', ui-monospace, monospace;

  --max: 1080px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--concrete);
  color: var(--ink);
  font-family: var(--font-cjk);
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3 { font-family: var(--font-cjk); font-weight: 600; margin: 0; }
p { margin: 0; }
a { color: inherit; }
.en { font-family: var(--font-latin); }

.wrap {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 28px;
}

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
}

/* ---------- Nav ---------- */

.site-nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(238, 240, 241, 0.92);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--line);
}

.site-nav__row {
  max-width: var(--max);
  margin: 0 auto;
  padding: 16px 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.site-nav__mark {
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--ink);
  text-decoration: none;
}

.site-nav__links {
  display: flex;
  gap: 4px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.site-nav__links a {
  display: inline-flex;
  gap: 6px;
  padding: 6px 12px;
  text-decoration: none;
  font-size: 14px;
  color: var(--steel);
  border-radius: 2px;
  transition: color 0.15s ease, background 0.15s ease;
}

.site-nav__links a:hover,
.site-nav__links a:focus-visible {
  color: var(--ink);
  background: var(--paper);
}

/* ---------- Hero ---------- */

.hero {
  padding: 96px 0 72px;
  border-bottom: 1px solid var(--line);
}

.hero__eyebrow {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--bauhinia);
  margin-bottom: 18px;
}

.hero__name {
  font-size: clamp(40px, 7vw, 76px);
  line-height: 1.05;
  letter-spacing: -0.01em;
}

.hero__name .en {
  display: block;
  font-size: 0.32em;
  font-weight: 400;
  color: var(--steel);
  margin-top: 10px;
}

.hero__intro {
  max-width: 46ch;
  margin-top: 28px;
  color: var(--steel);
  font-size: 17px;
}

/* ---------- Sections ---------- */

.section {
  padding: 84px 0;
  border-bottom: 1px solid var(--line);
}

.section__head {
  border-top: 1px solid var(--ink);
  padding-top: 12px;
  margin-bottom: 44px;
}

.section__title {
  font-size: clamp(26px, 4vw, 36px);
}

.section__title .en {
  font-size: 0.44em;
  color: var(--steel);
  font-weight: 400;
  margin-left: 14px;
}

/* About */

.about__grid {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 48px;
}

.about__photo {
  width: 220px;
  height: 220px;
  background: var(--ink);
  color: var(--concrete);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 15px;
  letter-spacing: 0.06em;
}

.about__name { font-size: 24px; margin-bottom: 4px; }

.about__role {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--steel);
  margin-bottom: 24px;
}

.about__bio p {
  color: var(--steel);
  max-width: 56ch;
  margin-bottom: 14px;
}

@media (max-width: 720px) {
  .about__grid { grid-template-columns: 1fr; }
  .about__photo { width: 120px; height: 120px; }
}

/* Works */

.works__tabs {
  display: flex;
  gap: 4px;
  flex-wrap: wrap;
  margin-bottom: 32px;
}

.works__tabs button {
  font-family: var(--font-cjk);
  font-size: 14px;
  background: none;
  border: 1px solid var(--line);
  color: var(--steel);
  padding: 8px 16px;
  cursor: pointer;
  border-radius: 2px;
}

.works__tabs button[aria-pressed="true"] {
  border-color: var(--ink);
  color: var(--ink);
  background: var(--paper);
}

.works__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.work-card {
  background: var(--paper);
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.work-card__top {
  display: flex;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--steel-soft);
}

.work-card__tone { width: 10px; height: 10px; }
.tone-ink { background: var(--ink); }
.tone-steel { background: var(--steel-soft); }
.tone-bauhinia { background: var(--bauhinia); }

.work-card__title { font-size: 18px; margin-top: 6px; }
.work-card__title .en {
  display: block;
  font-size: 13px;
  color: var(--steel);
  font-weight: 400;
  margin-top: 3px;
}

.work-card__desc { color: var(--steel); font-size: 14px; }

@media (max-width: 640px) {
  .works__grid { grid-template-columns: 1fr; }
}

/* Contact */

.contact__plaque {
  border: 1px solid var(--line);
  background: var(--paper);
  padding: 40px;
  max-width: 560px;
}

.contact__row {
  display: flex;
  justify-content: space-between;
  padding: 14px 0;
  border-top: 1px solid var(--line);
  font-size: 14px;
}

.contact__row a { text-decoration: none; }
.contact__row a:hover { color: var(--bauhinia); }

.contact__label { font-family: var(--font-mono); color: var(--steel-soft); font-size: 12px; }

/* ---------- Footer ---------- */

footer {
  background: var(--ink);
  color: var(--concrete);
  padding: 40px 0;
}

footer .wrap {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--steel-soft);
}

footer a { text-decoration: none; }
footer a:hover { color: var(--concrete); }

@media (max-width: 720px) {
  .site-nav__links .en { display: none; }
}

/* ============================================================
   Admin panel
   ============================================================ */

.admin-body { background: var(--concrete); min-height: 100vh; }

.admin-gate {
  max-width: 360px;
  margin: 14vh auto 0;
  padding: 40px;
  background: var(--paper);
  border: 1px solid var(--line);
}

.admin-gate__eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--bauhinia);
  margin-bottom: 10px;
}

.admin-gate h1 { font-size: 22px; margin-bottom: 24px; }

.admin-gate input {
  width: 100%;
  padding: 12px;
  border: 1px solid var(--line);
  background: var(--concrete);
  font-family: var(--font-mono);
  font-size: 14px;
  margin-bottom: 14px;
}

.admin-gate button, .btn {
  font-family: var(--font-cjk);
  font-size: 14px;
  padding: 11px 18px;
  border: 1px solid var(--ink);
  background: var(--ink);
  color: var(--concrete);
  cursor: pointer;
}

.btn--ghost { background: transparent; color: var(--ink); }
.btn--danger { border-color: var(--bauhinia); background: var(--bauhinia); color: #fff; }
.btn--small { padding: 6px 12px; font-size: 13px; }

.admin-gate__error {
  color: var(--bauhinia);
  font-size: 13px;
  margin: -6px 0 14px;
  min-height: 1em;
}

.admin-topbar {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--ink);
  color: var(--concrete);
  padding: 14px 0;
}

.admin-topbar .wrap {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.admin-topbar__title { font-family: var(--font-mono); font-size: 13px; }
.admin-topbar__actions { display: flex; gap: 8px; }

.admin-main { padding: 48px 0 100px; }

.admin-section {
  background: var(--paper);
  border: 1px solid var(--line);
  padding: 32px;
  margin-bottom: 24px;
}

.admin-section h2 {
  font-size: 16px;
  font-family: var(--font-mono);
  color: var(--bauhinia);
  margin-bottom: 20px;
}

.admin-field { margin-bottom: 18px; }

.admin-field label {
  display: block;
  font-size: 13px;
  color: var(--steel);
  margin-bottom: 6px;
}

.admin-field input, .admin-field textarea, .admin-field select {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--line);
  background: var(--concrete);
  font-family: var(--font-cjk);
  font-size: 14px;
}

.admin-field textarea { resize: vertical; min-height: 64px; }

.admin-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }

@media (max-width: 640px) { .admin-row { grid-template-columns: 1fr; } }

.admin-work-item {
  border: 1px solid var(--line);
  padding: 20px;
  margin-bottom: 16px;
  position: relative;
}

.admin-work-item__remove {
  position: absolute;
  top: 12px;
  right: 12px;
  background: none;
  border: none;
  color: var(--steel);
  cursor: pointer;
  font-size: 13px;
}

.admin-work-item__remove:hover { color: var(--bauhinia); }

.admin-category-row {
  display: flex;
  gap: 10px;
  align-items: center;
  margin-bottom: 10px;
}

.admin-category-row input { flex: 1; }

.admin-category-empty {
  font-size: 13px;
  color: var(--steel);
  padding: 12px 0;
}

.admin-toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: var(--ink);
  color: var(--concrete);
  padding: 12px 20px;
  font-size: 14px;
  font-family: var(--font-mono);
  opacity: 0;
  transition: opacity 0.2s ease, transform 0.2s ease;
  pointer-events: none;
  max-width: 90vw;
  text-align: center;
}

.admin-toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

.admin-hint {
  font-size: 13px;
  color: var(--steel);
  background: var(--concrete);
  border-left: 2px solid var(--bauhinia);
  padding: 12px 16px;
  margin-bottom: 24px;
}

@media (max-width: 720px) {
  .section__head { padding-top: 8px; }
}