style.css

/* =========================================================================
   mpegcd — design system
   A precision instrument for MPEG-standardisation video work. The content is
   inherently monospace (MD5, pix_fmt, geometry, ratios), so the design commits
   to the vernacular: JetBrains Mono for all data, IBM Plex Sans for prose.
   Color means truth: cyan = in flight, green = lossless-proven, red = failed.
   ========================================================================= */

:root {
  /* base — deep near-black for low-light video work (OLED) */
  --bg:        #0b0e13;
  --panel:     #12161d;
  --panel-2:   #181e27;   /* raised surface (drop zones, controls) */
  --well:      #080a0e;   /* inset well (the bar track, inputs) */

  /* ink */
  --fg:        #e8edf3;
  --fg-dim:    #aab4c0;   /* secondary prose */
  --muted:     #7d8896;   /* tertiary labels */
  --border:    #242c38;
  --border-2:  #333e4d;   /* stronger border (hover, focus) */

  /* one accent — cyan: the video-signal / scan vernacular, not generic blue */
  --accent:    #4cc9f0;
  --accent-2:  #38a8d6;   /* accent pressed/edge */
  --accent-ink:#04222e;   /* text on solid accent */

  /* semantic — reserved for truth only */
  --ok:        #3fd06a;   /* lossless verified */
  --ok-ink:    #04220e;
  --bad:       #f4645b;   /* failed / not lossless */
  --warn:      #d29922;

  /* type */
  --sans: "IBM Plex Sans", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  /* radii — a deliberate scale, not one value everywhere */
  --r-card: 8px;
  --r-ctl:  6px;
  --r-pill: 999px;

  /* spacing */
  --gut: 24px;

  /* icon masks (glyphs drawn in CSS, not emoji) */
  --mask-check: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath d='M6.2 10.6L3.4 7.8l-1 1 3.8 3.8 7-7-1-1z'/%3E%3C/svg%3E");
  --mask-x: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath d='M4 4l8 8m0-8l-8 8' stroke='%23000' stroke-width='1.6'/%3E%3C/svg%3E");
  --mask-dl: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath d='M8 1.5v8.2m0 0L5 6.9M8 9.7l3-2.9M2.5 11v1.7c0 .6.4 1 1 1h9c.6 0 1-.4 1-1V11' fill='none' stroke='%23000' stroke-width='1.4' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
}

* { box-sizing: border-box; }
html { color-scheme: dark; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--bg);
  color: var(--fg);
  font: 15px/1.55 var(--sans);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

/* data always wears the mono face */
code, .mono, .status, .brand, .kind, .job-name, .job-state, .meta, .dl { font-family: var(--mono); }

:where(a, button, input, label, .drop):focus-visible {
  outline: 2px solid var(--accent); outline-offset: 2px; border-radius: var(--r-ctl);
}

/* ---- header ---- */
header {
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  max-width: 880px; margin: 0 auto; padding: 20px var(--gut) 0;
}
.brand { font-size: 17px; font-weight: 600; letter-spacing: .3px; }
.brand::after { content: ""; display: inline-block; width: 7px; height: 7px; margin-left: 8px;
  border-radius: 2px; background: var(--accent); vertical-align: 2px; }
.status { font-size: 11.5px; color: var(--muted); text-align: right; }
.status::before { content: "●"; font-size: 8px; margin-right: 7px; vertical-align: 1px; }
.status.ok, .status.ok::before { color: var(--ok); }
.status.err, .status.err::before { color: var(--bad); }

/* ---- page ---- */
main { max-width: 880px; margin: 0 auto; padding: 8px var(--gut) 24px; }

.hero { padding: 36px 0 24px; }
.hero h1 { margin: 0 0 10px; font-size: clamp(24px, 4.2vw, 34px); font-weight: 600; letter-spacing: -.4px; line-height: 1.15; }
.hero p { margin: 0; max-width: 62ch; color: var(--fg-dim); font-size: 15px; }
.hero b { color: var(--fg); font-weight: 600; }
.hero code, footer code, .chip code {
  font-size: .86em; background: var(--well); border: 1px solid var(--border);
  border-radius: 4px; padding: 1px 5px; color: var(--fg);
}

/* ---- the one drop zone ---- */
.drop {
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 12px;
  min-height: 210px; padding: 28px 20px; text-align: center; cursor: pointer;
  background: linear-gradient(180deg, var(--panel-2), var(--panel));
  border: 1.5px dashed var(--border-2); border-radius: 12px; color: var(--fg-dim);
  transition: border-color .15s, background .15s, color .15s, box-shadow .15s;
}
.drop:hover, .drop.drag {
  border-color: var(--accent); color: var(--fg);
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--accent) 12%, transparent);
}
.drop.drag { background: color-mix(in srgb, var(--accent) 7%, var(--panel-2)); }
.drop input { display: none; }
.drop-ic { width: 38px; height: 38px; color: var(--muted); transition: color .15s, transform .15s; }
.drop:hover .drop-ic, .drop.drag .drop-ic { color: var(--accent); transform: translateY(-2px); }
.drop-title { font-size: 17px; font-weight: 500; color: var(--fg); }
.chips { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px; }
.chip { font-size: 12.5px; color: var(--muted); padding: 4px 10px;
  border: 1px solid var(--border); border-radius: var(--r-pill); background: var(--well); }
.chip code { background: none; border: 0; padding: 0; color: var(--fg-dim); }

.sample { margin: 14px 2px 0; font-size: 13px; color: var(--muted); max-width: 78ch; }
button.link {
  display: inline; padding: 0; border: 0; background: none; color: var(--accent);
  font: inherit; font-weight: 500; cursor: pointer; text-decoration: underline;
  text-underline-offset: 3px; text-decoration-color: color-mix(in srgb, var(--accent) 45%, transparent);
}
button.link:hover { background: none; text-decoration-color: var(--accent); }
button.link:disabled { opacity: .7; }

/* ---- queue ---- */
.queue { display: flex; flex-direction: column; gap: 10px; margin-top: 26px; }
.queue:empty { display: none; }

.job {
  background: var(--panel); border: 1px solid var(--border); border-radius: var(--r-card);
  padding: 12px 14px 13px; transition: border-color .25s;
}
.job.running { border-color: var(--accent-2); }
.job.done    { border-color: color-mix(in srgb, var(--ok) 40%, var(--border)); }
.job.error   { border-color: color-mix(in srgb, var(--bad) 55%, var(--border)); }

.job-head { display: flex; align-items: baseline; gap: 10px; min-width: 0; }
.kind {
  flex: 0 0 auto; font-size: 10.5px; font-weight: 600; letter-spacing: .5px; color: var(--accent);
  background: color-mix(in srgb, var(--accent) 12%, transparent);
  border-radius: 4px; padding: 2px 6px;
}
.job-name { flex: 1; min-width: 0; font-size: 13px; color: var(--fg);
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.job-state { flex: 0 0 auto; font-size: 11.5px; color: var(--muted); max-width: 45%;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.job.done .job-state { color: var(--ok); }
.job.error .job-state { color: var(--bad); }

.track { height: 3px; margin: 10px 0 9px; background: var(--well); border-radius: 2px; overflow: hidden; }
.fill { height: 100%; width: 0; background: var(--accent); transition: width .18s linear, background .3s; }
.job.done .fill { background: var(--ok); }
.job.error .fill { background: var(--bad); }

.meta { display: flex; flex-wrap: wrap; gap: 3px 14px; font-size: 11.5px; color: var(--muted); }
.meta b { color: var(--fg); font-weight: 500; }
.meta em { font-style: normal; color: var(--ok); }
.meta .ok { color: var(--ok); }
.meta .bad { color: var(--bad); }
.meta .ok::before, .meta .bad::before {
  content: ""; display: inline-block; width: 11px; height: 11px; margin-right: 5px; vertical-align: -1px;
  background: currentColor; -webkit-mask: var(--mask-check) no-repeat center / contain; mask: var(--mask-check) no-repeat center / contain;
}
.meta .bad::before { -webkit-mask-image: var(--mask-x); mask-image: var(--mask-x); }
.meta .dim { color: var(--muted); font-style: italic; }

.err { color: var(--bad); font-size: 11.5px; margin-top: 8px; word-break: break-word; font-family: var(--mono); }
.err:empty { display: none; }
.dl:empty { display: none; }
.dl { margin-top: 10px; }
.job-main > :first-child { margin-top: 0; }
.dl a {
  display: inline-flex; align-items: center; gap: 7px; max-width: 100%;
  color: var(--accent); text-decoration: none; font-size: 12px; font-weight: 500;
  border: 1px solid var(--border-2); border-radius: var(--r-ctl); padding: 7px 12px;
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
  transition: border-color .15s, background .15s;
}
.dl a:hover { border-color: var(--accent); background: color-mix(in srgb, var(--accent) 10%, transparent); }
.dl a::before {
  content: ""; width: 13px; height: 13px; flex: 0 0 auto; background: currentColor;
  -webkit-mask: var(--mask-dl) no-repeat center / contain; mask: var(--mask-dl) no-repeat center / contain;
}

/* card body: first-frame thumbnail + facts */
.job-body { display: flex; gap: 14px; align-items: flex-start; }
.job-main { flex: 1; min-width: 0; }
.thumb { flex: 0 0 auto; width: 112px; height: auto; border: 1px solid var(--border-2); border-radius: 4px; background: var(--well); }
.thumb[hidden] { display: none; }
.meta .warn { color: var(--warn); }
@media (max-width: 520px) { .thumb { width: 72px; } }

/* geometry editor on a card */
.geo { display: flex; flex-wrap: wrap; align-items: flex-end; gap: 10px; margin-top: 10px; padding-top: 10px; border-top: 1px dashed var(--border); }
.geo[hidden] { display: none; }
.geo label { display: flex; flex-direction: column; gap: 4px; font-size: 11px; color: var(--muted); font-family: var(--mono); }
.geo input, .geo select {
  background: var(--well); color: var(--fg); border: 1px solid var(--border-2); border-radius: var(--r-ctl);
  padding: 7px 8px; font: 12.5px var(--mono);
}
.geo input { width: 84px; }
.geo input:focus, .geo select:focus { outline: none; border-color: var(--accent); }
.meta button.link { font-size: 11.5px; font-family: var(--mono); }

/* ---- buttons ---- */
.actions { display: flex; gap: 10px; margin-top: 16px; flex-wrap: wrap; }
.actions[hidden] { display: none; }
button, a.btn {
  display: inline-flex; align-items: center; gap: 7px;
  background: var(--panel-2); color: var(--fg);
  border: 1px solid var(--border-2); border-radius: var(--r-ctl);
  padding: 9px 15px; font: 500 13.5px/1 var(--sans); cursor: pointer;
  transition: border-color .15s, background .15s, transform .06s;
}
a.btn { text-decoration: none; }
a.btn[hidden] { display: none; }
button:hover, a.btn:hover { border-color: var(--accent); background: #1c232e; }
button:active { transform: translateY(1px); }
button.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); font-weight: 600; }
button.primary:hover { background: var(--accent-2); border-color: var(--accent-2); }
button:disabled { opacity: .45; cursor: default; transform: none; }
button .ic, a.btn .ic { width: 15px; height: 15px; flex: 0 0 auto; }

/* ---- footer ---- */
footer { max-width: 880px; margin: 8px auto 0; padding: 18px var(--gut) 34px; color: var(--muted);
  font-size: 12.5px; border-top: 1px solid var(--border); line-height: 1.6; }
footer p { margin: 0; }
footer strong { color: var(--fg-dim); font-weight: 600; }
footer a { color: var(--accent); text-decoration: none; }
footer a:hover { text-decoration: underline; }

@media (prefers-reduced-motion: reduce) { * { transition-duration: .001ms !important; } }
@media (max-width: 520px) {
  :root { --gut: 16px; }
  .hero { padding-top: 24px; }
  .job-head { flex-wrap: wrap; }
  .job-state { max-width: 100%; }
}