/* ==========================================================
   The Old site page (projects/old-site/): the old samdickie.me in a Safari window.
   Behaviour: old-site.js. Page: tools/templates/old-site.html (built by build_old_site.py).
   ========================================================== */

.os-window {
  --os-chrome: #f3f3f5;          /* toolbar */
  --os-field: #e4e4e8;           /* address field */
  --os-icon: #5d5d66;            /* toolbar icons */
  --os-behind: #e9e9ee;          /* behind the screenshot while it loads */
  --os-link: 0, 113, 227;        /* link highlight: Apple blue, as r, g, b */
  --os-radius: 14px;
}
:root[data-theme="dark"] .os-window {
  --os-chrome: #2a2a2e;
  --os-field: #3a3a40;
  --os-icon: #b4b4bd;
  --os-behind: #1c1c1f;
  --os-link: 77, 163, 255;
}

.os-head { margin-bottom: 24px; }
.os-head .pj-app-sub { max-width: 640px; }

/* ---------- The window ---------- */
.os-window {
  display: grid;
  grid-template-rows: auto 1fr;
  height: clamp(480px, calc(100svh - 140px), 920px);
  border-radius: var(--os-radius);
  background: var(--card);
  box-shadow: 0 0 0 1px var(--line), 0 24px 60px -12px var(--shadow);
  overflow: hidden;
}

/* ---------- Toolbar ---------- */
.os-toolbar {
  display: flex;
  align-items: center;
  gap: 6px;
  min-width: 0;
  padding: 10px 12px;
  background: var(--os-chrome);
  border-bottom: 1px solid var(--line);
}
.os-lights { display: flex; gap: 8px; margin: 0 14px 0 4px; }
.os-lights i { width: 12px; height: 12px; border-radius: 50%; background: #ff5f57; }
.os-lights i:nth-child(2) { background: #febc2e; }
.os-lights i:nth-child(3) { background: #28c840; }
.os-history { display: flex; }

.os-tool {
  flex-shrink: 0;
  display: grid;
  place-items: center;
  width: 34px;
  height: 30px;
  padding: 0;
  border: 0;
  border-radius: 8px;
  background: none;
  color: var(--os-icon);
  cursor: pointer;
  transition: background .15s;
}
.os-tool:hover:not(:disabled) { background: var(--ss-hover); }
.os-tool:disabled { opacity: .35; cursor: default; }
.os-tool svg {
  width: 20px; height: 20px;
  fill: none; stroke: currentColor; stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round;
}
.os-tool[aria-expanded="true"].os-overview-toggle { background: var(--ss-hover); color: var(--text); }
.os-tool:focus-visible,
.os-bookmark:focus-visible,
.os-card:focus-visible,
.os-folder summary:focus-visible { outline: 2px solid var(--ss-select); outline-offset: 1px; }

.os-address {
  position: relative;
  flex: 1;
  min-width: 0;
  max-width: 620px;
  height: 34px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 0 12px;
  border-radius: 10px;
  background: var(--os-field);
  font-size: 13px;
  overflow: hidden;
}
.os-clock { flex-shrink: 0; width: 15px; height: 15px; fill: none; stroke: var(--muted); stroke-width: 2; stroke-linecap: round; }
.os-url {
  flex: 1;
  min-width: 0;
  text-align: center;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  color: var(--muted);
}
.os-url strong { color: var(--text); font-weight: 500; }
.os-date {
  flex-shrink: 0;
  padding: 2px 8px;
  border-radius: 6px;
  background: var(--card);
  font-size: 11.5px;
  font-weight: 600;
  color: var(--muted);
  white-space: nowrap;
}

/* Safari's blue loading bar, along the bottom of the address field */
.os-progress {
  position: absolute;
  left: 0; bottom: 0;
  width: 100%;
  height: 2.5px;
  background: rgb(var(--os-link));
  transform-origin: left;
  transform: scaleX(0);
  opacity: 0;
}
.is-loading .os-progress { opacity: 1; transform: scaleX(.8); transition: transform 2.5s cubic-bezier(.1, .7, .2, 1); }
.is-loaded .os-progress { opacity: 0; transform: scaleX(1); transition: transform .2s ease-out, opacity .3s .25s; }

/* ---------- Body: sidebar, page, overview ---------- */
.os-body {
  position: relative;
  display: grid;
  grid-template-columns: 250px minmax(0, 1fr);
  min-height: 0;
  transition: grid-template-columns .3s cubic-bezier(.2, .9, .3, 1);
}
.is-sidebar-hidden .os-body { grid-template-columns: 0 minmax(0, 1fr); }

.os-sidebar {
  position: relative;       /* old-site.js measures bookmarks from its top */
  min-width: 0;
  overflow-y: auto;
  overscroll-behavior: contain;
  padding: 12px 10px 24px;
  background: var(--ss-sidebar);
  border-right: 1px solid var(--line);
  font-size: 13px;
}
.is-sidebar-hidden .os-sidebar { visibility: hidden; transition: visibility 0s .3s; }
.os-sidebar-title {
  padding: 0 10px 8px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .05em;
  text-transform: uppercase;
  color: var(--muted);
}
.os-folder + .os-folder { margin-top: 6px; }
.os-folder summary {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 5px 10px;
  border-radius: 7px;
  font-weight: 600;
  color: var(--text);
  cursor: pointer;
  list-style: none;
}
.os-folder summary::-webkit-details-marker { display: none; }
.os-folder summary::before {       /* disclosure chevron */
  content: "";
  width: 6px; height: 6px;
  margin: 0 3px 0 1px;
  border-right: 1.6px solid var(--muted);
  border-bottom: 1.6px solid var(--muted);
  transform: rotate(-45deg);
  transition: transform .2s;
}
.os-folder[open] summary::before { transform: rotate(45deg); }
.os-folder summary:hover { background: var(--ss-hover); }
.os-count { margin-left: auto; font-weight: 500; color: var(--muted); font-size: 12px; }
.os-folder ul { list-style: none; padding: 2px 0 4px; }
.os-bookmark {
  display: block;
  padding: 5px 10px 5px 26px;
  border-radius: 7px;
  color: var(--body-text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.os-bookmark:hover { background: var(--ss-hover); }
.os-bookmark[aria-current] { background: var(--ss-select); color: #fff; }

/* The page itself */
.os-view {
  min-width: 0;
  overflow-y: auto;
  overscroll-behavior: contain;
  background: var(--os-behind);
  outline: none;
}
.os-shot { position: relative; width: 100%; }
.os-shot img { display: block; width: 100%; height: auto; }
.os-shot img + img { margin-top: -1px; }   /* overlap the slices a pixel, so no hairline shows between them */
.os-noscript { padding: 32px; color: var(--body-text); }

/* The invisible links over the screenshot. Hovering one (or, just after a page opens,
   all of them at once) shows a soft blue box, so it's clear the screenshot is clickable. */
.os-link {
  position: absolute;
  border-radius: 6px;
  transition: background .25s, box-shadow .25s;
}
.os-link:hover,
.os-link:focus-visible,
.is-hinting .os-link {
  background: rgba(var(--os-link), .14);
  box-shadow: 0 0 0 2px rgba(var(--os-link), .55);
  outline: none;
}
.is-hinting .os-link { transition-duration: .15s; }

/* Safari's status bar: where the hovered link goes */
.os-status {
  position: absolute;
  left: 8px;
  bottom: 8px;
  z-index: 2;
  max-width: min(70%, 560px);
  padding: 4px 10px;
  border-radius: 7px;
  background: var(--card);
  box-shadow: 0 0 0 1px var(--line), 0 4px 14px var(--shadow);
  font-size: 12px;
  color: var(--body-text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  opacity: 0;
  transform: translateY(4px);
  transition: opacity .15s, transform .15s;
  pointer-events: none;
}
.os-status.is-shown { opacity: 1; transform: none; }
.is-sidebar-hidden .os-status { left: 8px; }
.os-window:not(.is-sidebar-hidden) .os-status { left: 258px; }

/* ---------- Tab overview: every page as a thumbnail ---------- */
.os-overview {
  position: absolute;
  inset: 0;
  z-index: 3;
  overflow-y: auto;
  overscroll-behavior: contain;
  background: var(--tile);
  animation: os-zoom-out .25s cubic-bezier(.2, .9, .3, 1);
}
.os-overview[hidden] { display: none; }
@keyframes os-zoom-out { from { opacity: 0; transform: scale(1.03); } }
.os-overview-inner { padding: 24px 28px 40px; }
.os-overview section + section { margin-top: 32px; }
.os-overview h2 {
  margin-bottom: 14px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .05em;
  text-transform: uppercase;
  color: var(--muted);
}
.os-cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(190px, 1fr)); gap: 20px 16px; }
.os-card { display: flex; flex-direction: column; gap: 2px; min-width: 0; border-radius: 12px; }
.os-card img {
  width: 100%;
  height: auto;
  aspect-ratio: 480 / 300;
  margin-bottom: 8px;
  border-radius: 10px;
  background: var(--os-behind);
  box-shadow: 0 0 0 1px var(--line), 0 6px 18px -8px var(--shadow);
  transition: transform .2s, box-shadow .2s;
}
.os-card:hover img { transform: translateY(-2px); box-shadow: 0 0 0 1px var(--line), 0 12px 24px -8px var(--shadow); }
.os-card[aria-current] img { box-shadow: 0 0 0 3px var(--ss-select), 0 6px 18px -8px var(--shadow); }
.os-card strong { font-size: 13px; font-weight: 600; color: var(--text); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.os-card span { font-size: 12px; color: var(--muted); }

/* ---------- Smaller screens ---------- */
@media (max-width: 760px) {
  .os-window { height: calc(100svh - 110px); --os-radius: 12px; }
  .os-lights { display: none; }
  .os-toolbar { gap: 2px; padding: 8px; }
  .os-tool { width: 32px; }
  /* The sidebar slides over the page instead of pushing it aside */
  .os-body,
  .is-sidebar-hidden .os-body { grid-template-columns: minmax(0, 1fr); }
  .os-sidebar {
    position: absolute;
    inset: 0 auto 0 0;
    z-index: 4;
    width: min(280px, 85%);
    box-shadow: 8px 0 30px var(--shadow);
    transition: transform .3s cubic-bezier(.2, .9, .3, 1);
  }
  .is-sidebar-hidden .os-sidebar { transform: translateX(-105%); }
  .os-window:not(.is-sidebar-hidden) .os-status { left: 8px; }
  .os-overview-inner { padding: 18px 16px 32px; }
  .os-cards { grid-template-columns: repeat(auto-fill, minmax(140px, 1fr)); gap: 16px 12px; }
}
@media (max-width: 520px) {
  .os-date { display: none; }
  .os-address { padding: 0 10px; }
}

@media (prefers-reduced-motion: reduce) {
  .os-body, .os-sidebar, .os-overview, .os-link, .os-status, .os-card img { transition: none; animation: none; }
  .is-loading .os-progress { transition: none; }
}