/* Layout: full-bleed still grid like a contact sheet; project pages = video, camera report, stills */
:root {
  --bg: #0d0d0c;          /* gần đen, hơi ấm */
  --surface: #161614;
  --fg: #ecebe6;
  --muted: #8d8b84;
  --line: #2a2926;
  --scrim: rgba(8, 8, 7, .62);

  --display: "Archivo", "Helvetica Neue", Arial, sans-serif;
  --body: "Archivo", "Helvetica Neue", Arial, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, Menlo, monospace;

  --gutter: clamp(16px, 2.4vw, 32px);
  --gap: 4px;
  color-scheme: dark;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 400 15px/1.55 var(--body);
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
:focus-visible { outline: 1px solid var(--fg); outline-offset: 3px; }

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: env(safe-area-inset-top, 0px); z-index: 20;
  display: flex; align-items: center; justify-content: space-between; gap: 24px;
  flex-wrap: wrap;
  padding: 18px max(var(--gutter), env(safe-area-inset-right)) 18px max(var(--gutter), env(safe-area-inset-left));
  background: var(--bg);
}
.brand { display: flex; align-items: baseline; gap: 12px; }
.brand-name {
  font: 300 24px/1 var(--display);
  letter-spacing: .01em; text-transform: uppercase;
}
.brand-name b { font-weight: 800; }
.brand-role {
  font: 400 11px/1 var(--mono);
  color: var(--muted); letter-spacing: .12em; text-transform: uppercase;
}
.nav { display: flex; flex-wrap: wrap; gap: 6px 22px; }
.nav a, .nav button {
  font: 500 11px/1 var(--mono);
  letter-spacing: .14em; text-transform: uppercase;
  color: var(--muted);
  background: none; border: 0; padding: 6px 0; cursor: pointer;
  border-bottom: 1px solid transparent;
  transition: color .2s, border-color .2s;
}
.nav a:hover, .nav button:hover { color: var(--fg); }
.nav .is-active { color: var(--fg); border-bottom-color: var(--fg); }

/* ---------- Trang chủ: lưới still ---------- */
.grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--gap);
  padding: 0 var(--gap) var(--gap);
}
.tile { position: relative; display: block; overflow: hidden; background: var(--surface); }
.tile-media { aspect-ratio: 16 / 9; }
.tile img {
  width: 100%; height: 100%; object-fit: cover;
  transition: transform .9s cubic-bezier(.2,.7,.2,1), filter .5s;
}
.tile-cap {
  position: absolute; inset: 0;
  display: flex; flex-direction: column; justify-content: center; align-items: center;
  gap: 10px; padding: 16px; text-align: center;
  background: var(--scrim);
  opacity: 0; transition: opacity .35s ease;
}
.tile-title {
  font: 700 clamp(18px, 1.7vw, 26px)/1.1 var(--display);
  text-transform: uppercase; letter-spacing: .01em;
  text-wrap: balance;
}
.tile-meta {
  font: 400 10.5px/1.4 var(--mono);
  letter-spacing: .16em; text-transform: uppercase; color: var(--muted);
}
.tile:hover img, .tile:focus-visible img { transform: scale(1.035); }
.tile:hover .tile-cap, .tile:focus-visible .tile-cap { opacity: 1; }

/* Thiết bị cảm ứng không có hover → luôn hiện tên dưới ảnh */
@media (hover: none) {
  .tile-cap {
    position: static; opacity: 1; background: var(--bg);
    align-items: flex-start; text-align: left; padding: 10px 2px 18px;
    gap: 4px;
  }
  .tile-title { font-size: 18px; }
}

/* ---------- Trang dự án ---------- */
.project { padding: 8px max(var(--gutter), env(safe-area-inset-right)) 0 max(var(--gutter), env(safe-area-inset-left)); }
.player {
  position: relative; width: 100%; margin: 0 auto;
  background: #000;
}
.player iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }
.player.is-vertical { max-width: min(460px, 100%); }
.player-poster { display: block; overflow: hidden; }
.player-poster img { width: 100%; height: 100%; object-fit: cover; opacity: .55; }
.player-poster .play {
  position: absolute; left: 50%; top: 50%; width: 76px; height: 76px; margin: -38px 0 0 -38px;
  border: 1px solid var(--fg); border-radius: 50%;
  transition: transform .3s, background .3s;
}
.player-poster .play::after {
  content: ""; position: absolute; left: 31px; top: 25px;
  border-style: solid; border-width: 13px 0 13px 20px;
  border-color: transparent transparent transparent var(--fg);
}
.player-poster:hover .play { transform: scale(1.06); background: rgba(236, 235, 230, .08); }
.poster-note {
  position: absolute; left: 0; right: 0; bottom: 14px; padding: 0 16px; text-align: center;
  font: 400 10.5px/1.4 var(--mono); letter-spacing: .12em; text-transform: uppercase; color: var(--muted);
}

.project-head {
  display: grid; grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr);
  gap: 32px; padding: 40px 0 48px;
  border-bottom: 1px solid var(--line);
}
.project-title {
  margin: 0 0 10px;
  font: 800 clamp(34px, 5vw, 68px)/.98 var(--display);
  text-transform: uppercase; letter-spacing: 0; text-wrap: balance;
}
.project-sub {
  font: 400 12px/1.5 var(--mono); letter-spacing: .14em;
  text-transform: uppercase; color: var(--muted);
}

/* "Camera report" — bảng thông số kiểu báo cáo máy quay */
.report { display: grid; gap: 18px; align-content: start; }
.report dl { margin: 0; display: grid; grid-template-columns: 8.5em minmax(0, 1fr); gap: 8px 24px; }
.report dt {
  font: 400 10.5px/1.6 var(--mono); letter-spacing: .16em;
  text-transform: uppercase; color: var(--muted);
}
.report dd { margin: 0; font-size: 14px; }
.report hr { border: 0; border-top: 1px solid var(--line); margin: 0; width: 100%; }

.description { max-width: 62ch; font-size: 15px; line-height: 1.65; color: var(--fg); overflow-wrap: anywhere; }
.description p { margin: 0 0 1em; }
.description p:last-child { margin-bottom: 0; }
.description a { border-bottom: 1px solid var(--line); }
.description a:hover { border-bottom-color: var(--fg); }

.stills {
  display: grid; grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--gap); padding: 48px 0 0;
}
.still { padding: 0; border: 0; background: var(--surface); cursor: zoom-in; overflow: hidden; }
.still img { width: 100%; height: auto; transition: opacity .3s; }
.still:hover img { opacity: .88; }
.still.is-wide { grid-column: 1 / -1; }

.pager {
  display: grid; grid-template-columns: 1fr 1fr; gap: var(--gap);
  margin: 72px calc(-1 * max(var(--gutter), env(safe-area-inset-left))) 0;
}
.pager a { position: relative; display: block; overflow: hidden; aspect-ratio: 21 / 9; background: var(--surface); }
.pager img { width: 100%; height: 100%; object-fit: cover; opacity: .45; transition: opacity .4s; }
.pager a:hover img { opacity: .7; }
.pager span {
  position: absolute; inset: auto 0 0; padding: 18px var(--gutter);
  display: grid; gap: 6px;
}
.pager small {
  font: 400 10.5px/1 var(--mono); letter-spacing: .16em;
  text-transform: uppercase; color: var(--muted);
}
.pager strong { font: 700 clamp(18px, 2vw, 28px)/1.05 var(--display); text-transform: uppercase; }
.pager .next span { text-align: right; }

/* ---------- Lightbox ---------- */
.lightbox {
  position: fixed; inset: 0; z-index: 50;
  display: grid; place-items: center;
  background: rgba(5, 5, 5, .96);
  padding: max(48px, env(safe-area-inset-top)) max(56px, env(safe-area-inset-right)) max(48px, env(safe-area-inset-bottom)) max(56px, env(safe-area-inset-left));
}
.lightbox img { max-height: 100%; width: auto; max-width: 100%; object-fit: contain; }
.lb-btn {
  position: absolute; background: none; border: 0; color: var(--fg);
  font: 400 12px/1 var(--mono); letter-spacing: .14em; text-transform: uppercase;
  padding: 14px; cursor: pointer; opacity: .7;
}
.lb-btn:hover { opacity: 1; }
.lb-close { top: max(8px, env(safe-area-inset-top)); right: max(8px, env(safe-area-inset-right)); }
.lb-prev { left: max(4px, env(safe-area-inset-left)); top: 50%; transform: translateY(-50%); font-size: 22px; }
.lb-next { right: max(4px, env(safe-area-inset-right)); top: 50%; transform: translateY(-50%); font-size: 22px; }
.lb-count {
  position: absolute; bottom: max(14px, env(safe-area-inset-bottom)); left: 0; right: 0;
  text-align: center; font: 400 11px/1 var(--mono); letter-spacing: .14em; color: var(--muted);
}

/* ---------- Footer ---------- */
.site-footer {
  display: grid; gap: 40px;
  margin-top: 72px;
  padding: 48px max(var(--gutter), env(safe-area-inset-right)) 40px max(var(--gutter), env(safe-area-inset-left));
  border-top: 1px solid var(--line);
}
.contact { display: grid; gap: 20px; justify-items: start; }
.contact-title {
  margin: 0;
  font: 800 clamp(26px, 2.6vw, 36px)/1 var(--display);
  text-transform: uppercase; letter-spacing: .01em;
}
.contact-list { margin: 0; display: grid; gap: 10px; }
.contact-list div { display: grid; grid-template-columns: 7.5em minmax(0, 1fr); align-items: baseline; gap: 16px; }
.contact-list dt {
  font: 400 10.5px/1 var(--mono); letter-spacing: .16em; text-transform: uppercase; color: var(--muted);
}
.contact-list dd { margin: 0; font: 400 15px/1.4 var(--body); overflow-wrap: anywhere; }
.contact-list a { border-bottom: 1px solid transparent; transition: border-color .2s; }
.contact-list a:hover { border-bottom-color: var(--fg); }
.copyright { font: 400 10.5px/1.4 var(--mono); color: var(--muted); letter-spacing: .08em; }

.empty { padding: 120px var(--gutter); text-align: center; color: var(--muted); font-family: var(--mono); }

/* ---------- Responsive ---------- */
@media (max-width: 1100px) { .grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 640px) {
  .grid { grid-template-columns: minmax(0, 1fr); padding: 0 max(16px, env(safe-area-inset-right)) 0 max(16px, env(safe-area-inset-left)); gap: 0; }
  .site-header { position: static; padding-block: 14px; gap: 12px; }
  .project-head { grid-template-columns: minmax(0, 1fr); padding: 28px 0 32px; gap: 24px; }
  .stills { grid-template-columns: minmax(0, 1fr); padding-top: 32px; }
  .pager { grid-template-columns: minmax(0, 1fr); }
  .lightbox { padding-inline: 8px; }
  .lb-prev, .lb-next { top: auto; bottom: max(2px, env(safe-area-inset-bottom)); transform: none; }
}

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