/* Iowa State Athletics palette (Brand Guidelines v1.0) */
:root {
  --cardinal: #A61932;   /* Cyclone Cardinal, PMS 187 */
  --gold: #FFC836;       /* Cyclone Gold, PMS 123 */
  --accent: #872837;     /* Accent Cardinal, PMS 202 (secondary, use sparingly) */
  --ink: #1b1b1d;
  --muted: #5f5f66;
  --line: #e7e5e2;
  --paper: #ffffff;
  --tile: #f1efec;

  --font-display: "Cyclone Nation", "Graduate", Georgia, serif;
  --font-ui: "United Sans", "Saira", system-ui, -apple-system, sans-serif;
  --font-stat: "Tungsten", "Saira Extra Condensed", "Arial Narrow", sans-serif;

  --tile-min: 220px;
  --gap: 6px;
  --gutter: 32px;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { background: var(--paper); }
body { background: var(--paper); color: var(--ink); font: 400 16px/1.5 var(--font-ui); -webkit-font-smoothing: antialiased; }
a { color: inherit; }
[hidden] { display: none !important; }
.wrap { max-width: 1600px; margin: 0 auto; padding: 0 var(--gutter); }
svg { width: 18px; height: 18px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }

/* ---------- Masthead: cardinal base, white type, gold accent ---------- */
.masthead { background: var(--cardinal); color: #fff; }
.topbar { display: flex; align-items: center; padding: 22px 0; }
.brand { display: inline-flex; align-items: center; gap: 14px; text-decoration: none; }
.brand-mark { height: 72px; width: auto; display: block; }
.brand-name { display: flex; flex-direction: column; justify-content: space-between; height: 72px; font: 400 33px/1 var(--font-display); letter-spacing: .02em; text-transform: uppercase; }
.brand-name span { display: block; }
.hero { padding: 36px 0 44px; }
.crumbs { font: 500 13px/1.4 var(--font-ui); letter-spacing: .08em; text-transform: uppercase; color: rgba(255,255,255,.78); min-height: 18px; }
.crumbs a { text-decoration: none; }
.crumbs a:hover { color: #fff; text-decoration: underline; text-underline-offset: 3px; }
.crumbs .sep { margin: 0 10px; color: var(--gold); }
h1 { font: 400 clamp(38px, 6.4vw, 80px)/1.02 var(--font-display); text-transform: uppercase; letter-spacing: .01em; margin-top: 14px; max-width: 18ch; }
.rule { width: 72px; height: 4px; background: var(--gold); margin: 22px 0 18px; }
.hero-row { display: flex; flex-wrap: wrap; gap: 16px 24px; align-items: center; justify-content: space-between; }
.meta { display: flex; flex-wrap: wrap; align-items: baseline; gap: 6px 26px; font: 500 15px/1.3 var(--font-ui); color: rgba(255,255,255,.9); }
.stat { font: 700 30px/1 var(--font-stat); letter-spacing: .02em; color: #fff; margin-right: 6px; }

/* ---------- Buttons ---------- */
.btn { display: inline-flex; align-items: center; gap: 8px; height: 42px; padding: 0 18px; border-radius: 4px; font: 600 14px/1 var(--font-ui); text-decoration: none; cursor: pointer; border: 1.5px solid transparent; transition: background .2s, color .2s, border-color .2s; white-space: nowrap; }
.btn-ghost { color: #fff; border-color: rgba(255,255,255,.55); }
.btn-ghost:hover { background: #fff; color: var(--cardinal); border-color: #fff; }
.btn-gold { background: var(--gold); color: #1b1b1d; }
.btn-gold:hover { background: #ffd666; }
.btn:focus-visible, .icon-btn:focus-visible, .nav:focus-visible, .card:focus-visible, .tile:focus-visible { outline: 3px solid var(--gold); outline-offset: 2px; }

/* ---------- Content ---------- */
.content { padding-top: 40px; padding-bottom: 80px; min-height: 40vh; }
.section-label { font: 600 13px/1 var(--font-ui); letter-spacing: .14em; text-transform: uppercase; color: var(--cardinal); margin: 8px 0 18px; display: flex; align-items: center; gap: 14px; }
.section-label::after { content: ""; flex: 1; height: 1px; background: var(--line); }

/* Album cards */
.folders { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 28px 24px; margin-bottom: 48px; }
.card { display: block; text-decoration: none; color: var(--ink); }
.card-img { position: relative; aspect-ratio: 3 / 2; overflow: hidden; background: var(--tile); border-radius: 3px; }
.card-img img { width: 100%; height: 100%; object-fit: cover; object-position: 50% 25%; display: block; transition: transform .5s ease, opacity .4s; opacity: 0; }
.card-img img.loaded { opacity: 1; }
.card:hover .card-img img { transform: scale(1.04); }
.card-img::after { content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 4px; background: var(--gold); transform: scaleX(0); transform-origin: left; transition: transform .35s ease; }
.card:hover .card-img::after, .card:focus-visible .card-img::after { transform: scaleX(1); }
.card-empty { display: grid; place-items: center; background: var(--cardinal); color: #fff; font: 600 13px/1 var(--font-ui); letter-spacing: .14em; text-transform: uppercase; }
.card-empty span { border-top: 3px solid var(--gold); padding-top: 12px; margin: 0 16px; text-align: center; line-height: 1.5; }
.card-date { font: 600 12px/1 var(--font-ui); letter-spacing: .12em; text-transform: uppercase; color: var(--cardinal); margin-top: 14px; }
.card-title { font: 600 20px/1.25 var(--font-ui); margin-top: 6px; }

/* Photo grid: fixed square tiles, so nothing moves while images load (Box gives no dimensions) */
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(var(--tile-min), 1fr)); gap: var(--gap); }
.grid > .empty { grid-column: 1 / -1; }
.tile { position: relative; aspect-ratio: 1; overflow: hidden; background: var(--tile); border: 0; padding: 0; cursor: zoom-in; border-radius: 2px; }
.tile img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; opacity: 0; transition: opacity .45s ease, transform .6s ease; }
.tile img.loaded { opacity: 1; }
.tile:hover img.loaded { transform: scale(1.03); }

.status { text-align: center; color: var(--muted); font: 500 14px/1.4 var(--font-ui); padding: 28px 0 8px; }
.status.error { color: var(--cardinal); }
.empty { text-align: center; padding: 64px 16px; color: var(--muted); }
.empty strong { display: block; font: 400 28px/1.1 var(--font-display); text-transform: uppercase; color: var(--cardinal); margin-bottom: 8px; }

.footer { border-top: 6px solid var(--cardinal); padding: 28px 0 40px; color: var(--muted); font-size: 13px; }

/* ---------- Lightbox (Accent Cardinal; black + gold is off-brand) ---------- */
.lb { position: fixed; inset: 0; z-index: 50; background: var(--accent); color: #fff; display: flex; flex-direction: column; opacity: 0; transition: opacity .2s; }
.lb.show { opacity: 1; }
.lb-bar { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 14px 18px; padding-top: max(14px, env(safe-area-inset-top)); }
.lb-count { font: 700 22px/1 var(--font-stat); letter-spacing: .04em; color: rgba(255,255,255,.85); font-variant-numeric: tabular-nums; }
.lb-actions { display: flex; gap: 8px; align-items: center; }
.icon-btn { width: 42px; height: 42px; border-radius: 4px; border: 0; background: transparent; color: #fff; display: grid; place-items: center; cursor: pointer; }
.icon-btn:hover { background: rgba(255,255,255,.1); }
.icon-btn svg { width: 22px; height: 22px; }
.lb-stage { position: relative; flex: 1; min-height: 0; display: flex; align-items: center; justify-content: center; padding: 0 76px 18px; touch-action: pan-y; }
/* Box's largest public preview is 1024px wide, so never upscale past it */
.lb-stage img { max-width: min(100%, 1024px); max-height: min(100%, 1024px); object-fit: contain; user-select: none; -webkit-user-drag: none; opacity: 0; transition: opacity .25s; }
.lb-stage img.ready { opacity: 1; }
.spinner { position: absolute; width: 34px; height: 34px; border-radius: 50%; border: 3px solid rgba(255,255,255,.15); border-top-color: var(--gold); animation: spin .8s linear infinite; opacity: 0; transition: opacity .2s; }
.spinner.on { opacity: 1; }
@keyframes spin { to { transform: rotate(360deg); } }
.nav { position: absolute; top: 50%; transform: translateY(-50%); width: 52px; height: 52px; border-radius: 50%; border: 0; background: rgba(255,255,255,.08); color: #fff; display: grid; place-items: center; cursor: pointer; }
.nav:hover { background: var(--cardinal); }
.nav svg { width: 24px; height: 24px; }
.prev { left: 14px; } .next { right: 14px; }
.lb-foot { text-align: center; color: rgba(255,255,255,.6); font-size: 13px; padding: 0 16px max(16px, env(safe-area-inset-bottom)); }

@media (max-width: 760px) {
  :root { --gap: 3px; --gutter: 16px; }
  .grid { grid-template-columns: repeat(3, 1fr); }
  .topbar { padding: 16px 0; }
  .brand-mark { height: 56px; }
  .brand-name { height: 56px; font-size: 25px; }
  .hero { padding: 20px 0 30px; }
  .folders { grid-template-columns: 1fr 1fr; gap: 20px 12px; }
  .card-title { font-size: 15px; }
  .card-date { font-size: 11px; margin-top: 10px; }
  .lb-stage { padding: 0 0 12px; }
  .nav { display: none; }
  .hide-sm { display: none; }
}
@media (prefers-reduced-motion: reduce) { * { transition: none !important; animation: none !important; } }