/* base */
:root { color-scheme: dark; padding-block: env(safe-area-inset-top, 0px) env(safe-area-inset-bottom, 0px); }
body { margin: 0; font: 14px system-ui, sans-serif; background: #0B0909; }
img { max-width: 100%; }
[hidden] { display: none !important; }

/* Layout concept: one bench column. Drop zone first, then the file's box layout drawn as
   proportional bars (before / after), then the switches, then a single action. */
/* red / black palette, same in light and dark system modes */
:root {
  --bg: #0B0909;
  --surface: #161012;
  --ink: #F3ECEC;
  --muted: #A89A9B;
  --line: #3A2629;
  --accent: #DC1F2B;
  --accent-text: #FF5A63;
  --accent-ink: #FFFFFF;
  --knob: #F3ECEC;
  --bar-mdat: #3A2A2C;
  --bar-other: #6E5558;
  --ok: #62D391;
  --err: #FF6B6B;
  --warn: #F5C26B;
  --warn-bg: #2A2414;
  --glow: color-mix(in srgb, var(--accent) 55%, transparent);
  --grid: color-mix(in srgb, var(--accent) 10%, transparent);
  --font-display: 'Chakra Petch', 'IBM Plex Sans', system-ui, sans-serif;
  --font-body: 'IBM Plex Sans', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --font-mono: 'IBM Plex Mono', ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  color-scheme: dark;
}
body { background: var(--bg); color: var(--ink); font-family: var(--font-body); font-size: 15px; line-height: 1.5; scrollbar-color: var(--accent) var(--bg); }
::selection { background: var(--accent); color: var(--accent-ink); }

/* cyberpunk backdrop: neon haze + grid fading down the viewport, scanlines over everything */
body::before { content: ""; position: fixed; inset: 0; z-index: -1; pointer-events: none;
  background:
    radial-gradient(ellipse 70% 45% at 50% -8%, color-mix(in srgb, var(--accent) 28%, transparent), transparent 70%),
    radial-gradient(ellipse 45% 35% at 105% 105%, color-mix(in srgb, var(--accent) 14%, transparent), transparent 70%),
    linear-gradient(to bottom, transparent 15%, var(--bg) 85%),
    linear-gradient(var(--grid) 1px, transparent 1px) 0 0 / 44px 44px,
    linear-gradient(90deg, var(--grid) 1px, transparent 1px) 0 0 / 44px 44px; }
body::after { content: ""; position: fixed; inset: 0; z-index: 50; pointer-events: none;
  background: repeating-linear-gradient(to bottom, transparent 0 2px, rgba(0, 0, 0, .18) 2px 3px); }

.wrap { width: 100%; max-width: 46rem; margin-inline: auto; padding-inline: 16px; padding-block: 32px 56px; box-sizing: border-box; }

/* HUD strip above the brand */
.hud-top { display: flex; align-items: center; gap: .75rem; margin: 0 0 1.4rem; padding-bottom: .5rem; border-bottom: 1px solid var(--line);
  font-family: var(--font-mono); font-size: .68rem; letter-spacing: .16em; text-transform: uppercase; color: var(--muted); }
.hud-top .code { color: var(--accent-text); }
.hud-top .barcode { flex: 1; min-width: 2rem; height: .7rem; opacity: .45;
  background: repeating-linear-gradient(90deg, var(--muted) 0 1px, transparent 1px 3px, var(--muted) 3px 5px, transparent 5px 6px, var(--muted) 6px 7px, transparent 7px 11px); }
.hud-top .live { display: inline-flex; align-items: center; gap: .45rem; color: var(--ink); }
.hud-top .live::before { content: ""; width: .5rem; height: .5rem; background: var(--accent); box-shadow: 0 0 8px var(--accent); animation: blink 1.6s steps(1) infinite; }
.lang { display: inline-flex; flex: none; border: 1px solid var(--line); }
.lang button { font: inherit; letter-spacing: .14em; color: var(--muted); background: transparent; border: 0; padding: .15rem .45rem; cursor: pointer; }
.lang button:hover { color: var(--ink); }
.lang button[aria-pressed="true"] { background: var(--accent); color: var(--accent-ink); box-shadow: 0 0 10px var(--glow); }
.lang button:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
@media (max-width: 400px) { .hud-top .live { display: none; } }
@media (max-width: 340px) { .hud-top .code .pre { display: none; } }

h1 { font-family: var(--font-display); font-weight: 600; font-size: 1.5rem; letter-spacing: .01em; margin: 0 0 .5rem; text-wrap: balance; }
h1::before { content: "> "; content: "> " / ""; color: var(--accent-text); }
h1::after { content: ""; display: inline-block; width: .5em; height: .95em; margin-left: .2em; vertical-align: -.1em; background: var(--accent); box-shadow: 0 0 10px var(--glow); animation: blink 1.1s steps(1) infinite; }
.sub { margin: 0 0 1.5rem; color: var(--muted); max-width: 40rem; }
.wrap > .sub { padding-left: .8rem; border-left: 2px solid var(--accent); }
.mono { font-family: var(--font-mono); }
.brand { display: flex; align-items: center; gap: clamp(.6rem, 3vw, 1rem); margin: 0 0 .85rem; color: var(--ink); }
.brand .mark { width: clamp(2.4rem, 11vw, 3.4rem); height: clamp(2.4rem, 11vw, 3.4rem); flex: none; filter: drop-shadow(0 0 6px var(--glow)); }
.brand .name { position: relative; font-family: var(--font-display); font-weight: 700; font-size: clamp(2rem, 8.6vw, 3.1rem); line-height: 1.02; letter-spacing: -0.01em; text-wrap: balance;
  text-shadow: -2px 0 var(--accent), 0 0 22px var(--glow); }

/* glitch: two offset slices of the same text flash briefly every few seconds */
.glitch::before, .glitch::after { content: attr(data-text); content: attr(data-text) / ""; position: absolute; inset: 0; opacity: 0; pointer-events: none; background: var(--bg); text-shadow: none; }
.glitch::before { color: var(--accent-text); animation: glitch-a 6s steps(1) infinite; }
.glitch::after { color: var(--ink); animation: glitch-b 6s steps(1) infinite; }
@keyframes glitch-a {
  0%, 90%, 100% { opacity: 0; transform: none; clip-path: inset(0); }
  91% { opacity: 1; transform: translate(-4px, 1px); clip-path: inset(8% 0 62% 0); }
  93% { opacity: 1; transform: translate(3px, -1px); clip-path: inset(48% 0 24% 0); }
  95% { opacity: 1; transform: translate(-2px, 0); clip-path: inset(70% 0 6% 0); }
  96% { opacity: 0; }
}
@keyframes glitch-b {
  0%, 91%, 100% { opacity: 0; transform: none; clip-path: inset(0); }
  92% { opacity: 1; transform: translate(4px, 0); clip-path: inset(30% 0 50% 0); }
  94% { opacity: 1; transform: translate(-3px, 1px); clip-path: inset(12% 0 72% 0); }
  96% { opacity: 0; }
}
@keyframes blink { 50% { opacity: 0; } }

.mark circle { fill: var(--ink); }
.mark .out { fill: var(--accent); }
.credit strong { font-weight: 600; color: var(--ink); }
.label { display: flex; align-items: center; gap: .5rem; font-family: var(--font-mono); font-size: .72rem; letter-spacing: .12em; text-transform: uppercase; color: var(--muted); margin: 0 0 .6rem; }
.label::before { content: "//"; content: "//" / ""; color: var(--accent-text); }
.label::after { content: ""; flex: 1; height: 1px; background: linear-gradient(90deg, var(--line), transparent); }

/* drop zone */
.drop { --bw: 2px; position: relative; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: .35rem; text-align: center;
  min-height: 9.5rem; padding: 1.5rem 1rem; border: 2px dashed var(--line); border-radius: 2px; background: var(--surface);
  cursor: pointer; transition: border-color .15s, background .15s, box-shadow .15s; }
.drop:hover, .drop.over, #file:focus-visible + .drop { border-color: var(--accent); box-shadow: 0 0 28px -8px var(--glow); }
#file:focus-visible + .drop { outline: 2px solid var(--accent); outline-offset: 2px; }
.drop.over { background: color-mix(in srgb, var(--accent) 9%, var(--surface)); }
.drop strong { font-family: var(--font-display); font-weight: 600; font-size: 1.3rem; letter-spacing: .02em; }
/* scan beam sweeping the drop zone */
.drop::after { content: ""; position: absolute; left: 10px; right: 10px; top: 6px; height: 2px; pointer-events: none; opacity: .55;
  background: linear-gradient(90deg, transparent, var(--accent-text), transparent); box-shadow: 0 0 10px var(--glow);
  animation: scan 3.8s ease-in-out infinite alternate; }
@keyframes scan { to { top: calc(100% - 8px); } }

/* HUD corner brackets + tag sitting on the top border */
.drop::before, .panel::before { content: ""; position: absolute; inset: calc(-1 * var(--bw)); pointer-events: none;
  --c: linear-gradient(var(--accent), var(--accent));
  background: var(--c) 0 0 / 16px 2px, var(--c) 0 0 / 2px 16px, var(--c) 100% 0 / 16px 2px, var(--c) 100% 0 / 2px 16px,
    var(--c) 0 100% / 16px 2px, var(--c) 0 100% / 2px 16px, var(--c) 100% 100% / 16px 2px, var(--c) 100% 100% / 2px 16px;
  background-repeat: no-repeat; }
.drop .legend, .panel .legend { position: absolute; top: calc(-1 * var(--bw)); right: 1.25rem; transform: translateY(-50%); padding: .05rem .45rem;
  background: var(--accent); color: var(--accent-ink); font-family: var(--font-mono); font-size: .62rem; letter-spacing: .16em; text-transform: uppercase; line-height: 1.4; }
.drop span { color: var(--muted); }
.drop .priv { font-size: .85rem; margin-top: .35rem; }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

/* file panel */
.panel { --bw: 1px; position: relative; margin-top: 1.4rem; padding: 1.3rem 1.1rem 1.25rem; border: 1px solid var(--line); border-radius: 2px; background: var(--surface); }
.fname { font-family: var(--font-mono); font-size: .95rem; word-break: break-all; margin: 0 0 .6rem; }
.chips { display: flex; flex-wrap: wrap; gap: .4rem; margin: 0 0 1.1rem; padding: 0; list-style: none; }
.notice { margin: 0 0 1.1rem; padding: .7rem .85rem; border: 1px solid var(--warn); border-left-width: 3px; border-radius: 2px; background: var(--warn-bg); color: var(--ink); font-size: .88rem; }
.notice-ttl { margin: 0 0 .3rem; font-weight: 600; color: var(--warn); }
.notice ul { margin: 0; padding-left: 1.1rem; display: grid; gap: .3rem; }
.chips li { font-family: var(--font-mono); font-size: .78rem; padding: .15rem .55rem; border: 1px solid var(--line); border-left: 2px solid var(--accent); border-radius: 2px; color: var(--muted); background: color-mix(in srgb, var(--accent) 6%, transparent); }
.bar-row { display: grid; grid-template-columns: 3.2rem minmax(0, 1fr); align-items: center; gap: .6rem; margin-bottom: .5rem; }
.bar-row .tag { font-family: var(--font-mono); font-size: .72rem; color: var(--muted); }
.bar { display: flex; height: 2rem; border-radius: 2px; overflow: hidden; gap: 2px; }
.seg { display: flex; align-items: center; justify-content: center; min-width: 0; overflow: hidden; font-family: var(--font-mono); font-size: .7rem;
  color: var(--ink); background: var(--bar-other); white-space: nowrap; }
.seg.mdat { background: repeating-linear-gradient(-45deg, var(--bar-mdat) 0 6px, color-mix(in srgb, var(--bar-mdat) 70%, #000) 6px 12px); }
.seg.moov { background: var(--accent); color: var(--accent-ink); }
.bar-note { margin: .45rem 0 0; font-size: .85rem; color: var(--muted); }

/* options */
.opts { margin-top: 1.75rem; }
.preset-row { display: flex; flex-wrap: wrap; gap: .5rem; margin-bottom: .5rem; }
.btn-quiet { font: inherit; font-size: .85rem; color: var(--ink); background: transparent; border: 1px solid var(--line); border-radius: 2px; padding: .3rem .7rem; cursor: pointer; transition: border-color .15s, color .15s, box-shadow .15s; }
.btn-quiet:hover { border-color: var(--accent); color: var(--accent-text); box-shadow: 0 0 14px -4px var(--glow); }
.opt { display: flex; align-items: flex-start; gap: .85rem; padding: .85rem 0; border-top: 1px solid var(--line); cursor: pointer; }
.opt:first-of-type { border-top: 0; }
.opt .txt { min-width: 0; flex: 1; }
.opt .ttl { display: flex; flex-wrap: wrap; align-items: baseline; gap: .4rem; font-weight: 500; }
.opt .hint { display: block; margin-top: .15rem; font-size: .88rem; color: var(--muted); }
.opt.off { opacity: .55; cursor: not-allowed; }
.exp { font-family: var(--font-mono); font-size: .68rem; letter-spacing: .06em; text-transform: uppercase; padding: .05rem .4rem; border: 1px solid var(--accent); color: var(--accent-text); border-radius: 2px; background: color-mix(in srgb, var(--accent) 14%, transparent); }
.sw { appearance: none; -webkit-appearance: none; flex: none; width: 2.6rem; height: 1.5rem; margin: .1rem 0 0; border-radius: 2px; background: var(--line); position: relative; cursor: inherit; transition: background .15s, box-shadow .15s; }
.sw::after { content: ""; position: absolute; top: 3px; left: 3px; width: calc(1.5rem - 6px); height: calc(1.5rem - 6px); border-radius: 1px; background: var(--knob); box-shadow: 0 1px 2px rgba(0,0,0,.3); transition: transform .15s; }
.sw:checked { background: var(--accent); box-shadow: 0 0 12px var(--glow); }
.sw:checked::after { transform: translateX(1.1rem); }
.sw:focus-visible, .btn-quiet:focus-visible, .num:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.num.wide { width: 5.2rem; }
.label.sub { margin-top: 1.4rem; }
.subnote { margin: .2rem 0 .3rem; font-size: .88rem; color: var(--muted); max-width: 40rem; }
.opt .hint strong { font-weight: 600; color: var(--ink); }
.ghostbtns { display: flex; flex-wrap: wrap; gap: .4rem; margin-top: .45rem; }
.ghostbtns .btn-quiet { font-size: .8rem; padding: .2rem .55rem; }
.ghostbtns .btn-quiet:disabled { opacity: .5; cursor: not-allowed; }
.num { width: 4rem; font: inherit; font-family: var(--font-mono); padding: .1rem .35rem; color: var(--ink); background: var(--bg); border: 1px solid var(--line); border-radius: 2px; }

/* action + status */
.actions { display: flex; flex-wrap: wrap; align-items: center; gap: .75rem; margin-top: 1.5rem; }
/* chamfered button; its glow lives on the wrapper because clip-path would cut a box-shadow */
.go { font: inherit; font-family: var(--font-display); font-weight: 700; font-size: 1.05rem; letter-spacing: .06em; text-transform: uppercase;
  color: var(--accent-ink); background: var(--accent); border: 0; border-radius: 0; padding: .85rem 1.6rem; cursor: pointer;
  clip-path: polygon(0 0, calc(100% - 14px) 0, 100% 14px, 100% 100%, 14px 100%, 0 calc(100% - 14px)); }
.go:disabled { opacity: .45; cursor: not-allowed; }
.go:focus-visible { outline: 2px solid var(--accent-ink); outline-offset: -6px; }
.actions { transition: filter .15s; }
.actions:has(.go:not(:disabled)) { filter: drop-shadow(0 0 10px var(--glow)); }
.actions:has(.go:not(:disabled):hover) { filter: drop-shadow(0 0 18px var(--accent)); }
.status { margin: .9rem 0 0; min-height: 1.4em; color: var(--muted); }
.status::before { content: "> "; content: "> " / ""; font-family: var(--font-mono); color: var(--accent-text); }
.status.err { color: var(--err); }
.status.ok { color: var(--ok); }
.result { margin-top: .75rem; padding-top: .9rem; border-top: 1px solid var(--line); }
.result ul { margin: .4rem 0 .9rem; padding-left: 1.1rem; color: var(--muted); font-size: .9rem; list-style: square; }
.result li::marker { color: var(--accent); }
.foot { position: relative; margin-top: 2.5rem; padding-top: 1.4rem; font-size: .85rem; color: var(--muted); }
.foot::before { content: ""; position: absolute; top: 0; left: 0; right: 0; height: 6px; opacity: .75;
  background: repeating-linear-gradient(-45deg, var(--accent) 0 8px, transparent 8px 16px); }
.foot p { margin: 0 0 .4rem; }
.foot a { color: var(--accent-text); text-decoration: underline; text-decoration-color: color-mix(in srgb, var(--accent) 60%, transparent); text-underline-offset: 3px; overflow-wrap: anywhere; }
.foot a:hover { text-decoration-color: var(--accent-text); text-shadow: 0 0 10px var(--glow); }
.foot a:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.author { margin: 1rem 0; padding: .9rem 1rem; border: 1px solid var(--line); border-left: 3px solid var(--accent); border-radius: 2px; background: var(--surface); }
.foot .author-name { margin: 0 0 .35rem; font-family: var(--font-display); font-weight: 700; font-size: 1.25rem; letter-spacing: .02em; color: var(--ink); text-shadow: 0 0 14px var(--glow); }
.contact { margin: 0; padding: 0; list-style: none; display: grid; gap: .25rem; }
.contact .k { display: inline-block; min-width: 5.5rem; font-family: var(--font-mono); font-size: .7rem; letter-spacing: .12em; text-transform: uppercase; color: var(--muted); }
.foot .sig { margin-top: .9rem; font-family: var(--font-mono); font-size: .66rem; letter-spacing: .16em; text-transform: uppercase; opacity: .7; }
.foot .copy { margin: 1rem 0 0; padding-top: .8rem; border-top: 1px solid var(--line); text-align: center; font-family: var(--font-mono); font-size: .72rem; letter-spacing: .06em; color: var(--muted); }
.copy .c { color: var(--accent-text); text-shadow: 0 0 8px var(--glow); }
.copy strong { font-weight: 500; color: var(--ink); }
@media (max-width: 480px) { h1 { font-size: 1.3rem; } .go { width: 100%; } .bar-row { grid-template-columns: 2.6rem minmax(0, 1fr); } }
@media (prefers-reduced-motion: reduce) { *, *::before, *::after { transition: none !important; animation: none !important; } .drop::after { display: none; } }