/* ============================================================
   MIMIC — File Signature Checker · THE LAB
   Dark arcade / retro-terminal. Tokens mirror /lab.css.
   ============================================================ */

@font-face {
  font-family: "Press Start 2P";
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("/press-start-2p.woff2") format("woff2");
}
@font-face {
  font-family: "Press Start 2P Fallback";
  src: local("Courier New");
  size-adjust: 166.64%;
  ascent-override: 60%;
  descent-override: 0%;
  line-gap-override: 0%;
}

:root {
  color-scheme: dark;

  --bg: #0a0a12;
  --surface: #12121d;
  --surface-2: #1a1a2a;
  --surface-3: #20202f;
  --line: #28283c;
  --line-soft: #20202e;
  --text: #e9e9f2;
  --dim: #9aa0b5;
  --faint: #6b7088;

  --cyan: #45f0ff;
  --magenta: #ff3d8b;
  --gold: #ffc857;
  --green: #41ff8b;
  --red: #ff5560;

  --pixel: "Press Start 2P", "Press Start 2P Fallback", "Courier New", monospace;
  --sans: -apple-system, "Segoe UI", system-ui, sans-serif;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;

  --text-base: clamp(1rem, 0.94rem + 0.3vw, 1.0625rem);

  --duration-fast: 150ms;
  --duration-normal: 300ms;
  --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);

  --radius: 8px;
  --radius-sm: 4px;

  --glow-cyan: 0 0 24px rgba(69, 240, 255, 0.18);
}

* { box-sizing: border-box; margin: 0; }

html { scroll-behavior: smooth; }

body {
  min-height: 100svh;
  background:
    radial-gradient(ellipse 90% 60% at 50% -10%, rgba(69, 240, 255, 0.07), transparent 60%),
    radial-gradient(ellipse 70% 50% at 90% 8%, rgba(255, 61, 139, 0.05), transparent 55%),
    var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: var(--text-base);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

/* faint global scanline texture for CRT feel */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background: repeating-linear-gradient(
    0deg,
    rgba(0, 0, 0, 0.16) 0 1px,
    transparent 1px 3px
  );
  opacity: 0.5;
  mix-blend-mode: multiply;
}

a { color: var(--cyan); }
button, input { font: inherit; color: inherit; }

:focus-visible {
  outline: 3px solid var(--cyan);
  outline-offset: 3px;
  box-shadow: 0 0 0 6px rgba(69, 240, 255, 0.22);
  border-radius: 2px;
}

.skip-link {
  position: absolute;
  left: 0.75rem;
  top: -3rem;
  z-index: 200;
  font-family: var(--pixel);
  font-size: 9px;
  background: var(--cyan);
  color: var(--bg);
  padding: 0.6rem 0.8rem;
  text-decoration: none;
  transition: top var(--duration-fast) var(--ease-out-expo);
}
.skip-link:focus { top: 0.75rem; }

/* ---------- back to lab ---------- */
.lab-link {
  position: fixed;
  top: 0.85rem;
  left: clamp(0.75rem, 3vw, 1.5rem);
  z-index: 100;
  font-family: var(--pixel);
  font-size: 9px;
  letter-spacing: 0.04em;
  color: var(--dim);
  text-decoration: none;
  padding: 0.55rem 0.7rem;
  background: rgba(10, 10, 18, 0.78);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  transition: color var(--duration-fast) ease,
    border-color var(--duration-fast) ease,
    transform var(--duration-fast) var(--ease-out-expo);
}
.lab-link:hover,
.lab-link:focus-visible {
  color: var(--cyan);
  border-color: var(--cyan);
  transform: translateX(-2px);
}

/* ---------- shell ---------- */
.shell {
  position: relative;
  z-index: 1;
  width: min(100%, 64rem);
  margin: 0 auto;
  padding: clamp(4rem, 4rem + 3vw, 5.5rem) clamp(1rem, 4vw, 2rem) 3rem;
}

/* ---------- masthead ---------- */
.masthead {
  display: grid;
  justify-items: start;
  gap: 0.9rem;
  margin-bottom: clamp(2rem, 5vw, 3.25rem);
  padding-bottom: clamp(1.5rem, 4vw, 2.25rem);
  border-bottom: 1px solid var(--line);
}

.masthead__eyebrow {
  font-family: var(--pixel);
  font-size: clamp(8px, 1.8vw, 10px);
  letter-spacing: 0.18em;
  color: var(--magenta);
  text-shadow: 0 0 12px rgba(255, 61, 139, 0.4);
}

.masthead__title {
  font-family: var(--pixel);
  font-weight: 400;
  font-size: clamp(2.2rem, 1rem + 9vw, 5rem);
  line-height: 1.05;
  letter-spacing: 0.02em;
  color: var(--text);
  text-shadow: 0 0 18px rgba(69, 240, 255, 0.4), 0 0 52px rgba(69, 240, 255, 0.16);
}

.masthead__sub {
  max-width: 52ch;
  color: var(--dim);
  font-size: clamp(1rem, 0.92rem + 0.4vw, 1.15rem);
  line-height: 1.7;
}

.tag-ext,
.tag-mime {
  font-family: var(--mono);
  font-size: 0.85em;
  padding: 0.05em 0.4em;
  border-radius: var(--radius-sm);
  white-space: nowrap;
}
.tag-ext { color: var(--gold); background: rgba(255, 200, 87, 0.1); border: 1px solid rgba(255, 200, 87, 0.3); }
.tag-mime { color: var(--cyan); background: rgba(69, 240, 255, 0.08); border: 1px solid rgba(69, 240, 255, 0.28); }

/* ---------- glitch title ---------- */
.glitch { position: relative; }
.glitch::before,
.glitch::after {
  content: attr(data-text);
  position: absolute;
  inset: 0;
  opacity: 0;
  pointer-events: none;
  text-shadow: none;
}
.glitch::before { color: var(--cyan); }
.glitch::after { color: var(--magenta); }
.glitch:hover::before { animation: glitch-a 0.42s steps(3, jump-none) 1; }
.glitch:hover::after { animation: glitch-b 0.42s steps(3, jump-none) 1; }

@keyframes glitch-a {
  0%   { opacity: 0.8; clip-path: inset(8% 0 72% 0);  transform: translate3d(-5px, -2px, 0); }
  33%  { opacity: 0.8; clip-path: inset(54% 0 22% 0); transform: translate3d(4px, 1px, 0); }
  66%  { opacity: 0.8; clip-path: inset(28% 0 50% 0); transform: translate3d(-3px, 2px, 0); }
  100% { opacity: 0;   clip-path: inset(45% 0 45% 0); transform: translate3d(0, 0, 0); }
}
@keyframes glitch-b {
  0%   { opacity: 0.8; clip-path: inset(64% 0 16% 0); transform: translate3d(5px, 2px, 0); }
  33%  { opacity: 0.8; clip-path: inset(12% 0 70% 0); transform: translate3d(-4px, -1px, 0); }
  66%  { opacity: 0.8; clip-path: inset(42% 0 36% 0); transform: translate3d(3px, -2px, 0); }
  100% { opacity: 0;   clip-path: inset(45% 0 45% 0); transform: translate3d(0, 0, 0); }
}

/* ---------- bays (sections) ---------- */
.bay { margin-bottom: clamp(1.5rem, 4vw, 2.25rem); }

.bay__label {
  display: flex;
  align-items: baseline;
  gap: 0.65rem;
  margin: 0 0 1.1rem;
  font-family: var(--pixel);
  font-weight: 400;
  font-size: clamp(11px, 2.2vw, 14px);
  letter-spacing: 0.04em;
  color: var(--text);
}
.bay__num {
  font-size: 0.8em;
  color: var(--cyan);
  text-shadow: 0 0 10px rgba(69, 240, 255, 0.4);
}

/* ---------- drop zone ---------- */
.drop-zone {
  position: relative;
  display: grid;
  justify-items: center;
  gap: 1.1rem;
  min-height: 14rem;
  padding: clamp(1.75rem, 5vw, 2.75rem) 1.25rem;
  overflow: hidden;
  border: 2px dashed var(--line);
  border-radius: var(--radius);
  background:
    linear-gradient(180deg, var(--surface-2), var(--surface) 70%);
  text-align: center;
  transition: border-color var(--duration-normal) var(--ease-out-expo),
    box-shadow var(--duration-normal) var(--ease-out-expo),
    background var(--duration-normal) ease;
}

.drop-zone__scan {
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--cyan), transparent);
  opacity: 0;
  box-shadow: 0 0 14px rgba(69, 240, 255, 0.6);
}

.drop-zone.is-dragging {
  border-color: var(--cyan);
  border-style: solid;
  background: linear-gradient(180deg, rgba(69, 240, 255, 0.08), var(--surface) 80%);
  box-shadow: var(--glow-cyan), inset 0 0 40px rgba(69, 240, 255, 0.06);
}
.drop-zone.is-dragging .drop-zone__scan {
  opacity: 1;
  animation: scan-sweep 1.1s linear infinite;
}
@keyframes scan-sweep {
  0% { transform: translateY(0); }
  100% { transform: translateY(14rem); }
}

.drop-zone__art {
  display: inline-flex;
  gap: 0.4rem;
}
.byte {
  font-family: var(--pixel);
  font-size: clamp(10px, 2.4vw, 13px);
  color: var(--cyan);
  background: rgba(69, 240, 255, 0.06);
  border: 1px solid rgba(69, 240, 255, 0.25);
  border-radius: 3px;
  padding: 0.45rem 0.4rem;
  text-shadow: 0 0 8px rgba(69, 240, 255, 0.45);
}
.byte:nth-child(2) { color: var(--magenta); border-color: rgba(255, 61, 139, 0.3); background: rgba(255, 61, 139, 0.06); text-shadow: 0 0 8px rgba(255, 61, 139, 0.4); }
.byte:nth-child(3) { color: var(--gold); border-color: rgba(255, 200, 87, 0.3); background: rgba(255, 200, 87, 0.06); text-shadow: 0 0 8px rgba(255, 200, 87, 0.4); }
.byte:nth-child(4) { color: var(--green); border-color: rgba(65, 255, 139, 0.3); background: rgba(65, 255, 139, 0.06); text-shadow: 0 0 8px rgba(65, 255, 139, 0.4); }

.drop-copy { display: grid; gap: 0.4rem; justify-items: center; pointer-events: none; }
.drop-copy__title {
  font-family: var(--pixel);
  font-size: clamp(11px, 2.6vw, 15px);
  letter-spacing: 0.06em;
  color: var(--text);
}
.drop-copy__sub {
  max-width: 40ch;
  color: var(--dim);
  font-size: 0.92rem;
}

.pick-button {
  position: relative;
  z-index: 1;
  min-height: 2.9rem;
  font-family: var(--pixel);
  font-size: clamp(10px, 2vw, 12px);
  letter-spacing: 0.04em;
  color: var(--bg);
  background: var(--cyan);
  border: 0;
  padding: 0.9rem 1.5rem;
  cursor: pointer;
  box-shadow: 0 0 0 3px var(--bg), 0 0 0 5px var(--cyan), 0 0 26px rgba(69, 240, 255, 0.4);
  transition: transform var(--duration-fast) var(--ease-out-expo),
    box-shadow var(--duration-fast) var(--ease-out-expo);
}
.pick-button:hover {
  transform: translateY(-3px);
  box-shadow: 0 0 0 3px var(--bg), 0 0 0 5px var(--cyan), 0 0 40px rgba(69, 240, 255, 0.62);
}
.pick-button:active { transform: translateY(1px); }
.pick-button:focus-visible { outline: 3px solid var(--gold); outline-offset: 6px; }

/* picker input overlays the whole zone so any click/drag works,
   but the button sits above it (z-index:1) for its own styling */
.file-input {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  cursor: pointer;
}

.privacy-note {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin: 0.9rem 0 0;
  font-family: var(--mono);
  font-size: 0.85rem;
  color: var(--dim);
}
.privacy-note__lock {
  color: var(--green);
  font-size: 0.7em;
  text-shadow: 0 0 8px rgba(65, 255, 139, 0.6);
  animation: pulse 2.4s ease-in-out infinite;
}
@keyframes pulse { 50% { opacity: 0.4; } }

/* ---------- result panel ---------- */
.result-panel {
  padding: clamp(1.1rem, 3vw, 1.6rem);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(180deg, var(--surface-2), var(--surface) 60%);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.35);
}

.result-heading {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.25rem;
}
.result-heading .bay__label { margin: 0; }

.status-badge {
  display: inline-flex;
  align-items: center;
  min-height: 2rem;
  font-family: var(--pixel);
  font-size: 10px;
  letter-spacing: 0.06em;
  padding: 0.5rem 0.85rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--line);
  background: var(--surface-3);
  color: var(--dim);
}
.status-badge.is-ok {
  color: var(--green);
  border-color: rgba(65, 255, 139, 0.5);
  background: rgba(65, 255, 139, 0.08);
  box-shadow: 0 0 16px rgba(65, 255, 139, 0.25);
}
.status-badge.is-warn {
  color: var(--gold);
  border-color: rgba(255, 200, 87, 0.6);
  background: rgba(255, 200, 87, 0.1);
  box-shadow: 0 0 16px rgba(255, 200, 87, 0.3);
  animation: badge-flash 1.4s ease-in-out infinite;
}
@keyframes badge-flash {
  50% { box-shadow: 0 0 26px rgba(255, 200, 87, 0.5); }
}

/* result grid — intentional bento: name spans, detected type is hero */
.result-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.6rem;
  margin: 0;
}
.result-item {
  min-width: 0;
  padding: 0.85rem 0.95rem;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-sm);
  background: rgba(10, 10, 18, 0.5);
}
.result-item--hero {
  border-color: rgba(69, 240, 255, 0.3);
  background:
    radial-gradient(120% 120% at 0% 0%, rgba(69, 240, 255, 0.07), transparent 60%),
    rgba(10, 10, 18, 0.5);
}

.result-item dt {
  margin: 0 0 0.35rem;
  font-family: var(--pixel);
  font-size: 8px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--dim);
}
.result-item dd {
  min-width: 0;
  margin: 0;
  font-family: var(--mono);
  font-size: 0.98rem;
  color: var(--text);
  overflow-wrap: anywhere;
}
.result-item--hero dd {
  font-size: clamp(1.05rem, 0.9rem + 0.7vw, 1.45rem);
  font-weight: 600;
  color: var(--green);
}
.result-item--hero dd[data-state="unknown"] { color: var(--dim); }

/* ---------- warning box ---------- */
.warning-box {
  margin-top: 1.1rem;
  padding: 1rem 1.15rem;
  border: 1px solid rgba(255, 200, 87, 0.55);
  border-left: 4px solid var(--gold);
  border-radius: var(--radius-sm);
  background: rgba(255, 200, 87, 0.07);
  box-shadow: inset 0 0 30px rgba(255, 200, 87, 0.04);
}
.warning-box__title {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  margin: 0 0 0.7rem;
  font-family: var(--pixel);
  font-size: 11px;
  letter-spacing: 0.05em;
  color: var(--gold);
  text-shadow: 0 0 12px rgba(255, 200, 87, 0.35);
}
.warning-box__siren {
  font-size: 0.85em;
  animation: pulse 1s ease-in-out infinite;
}
.warning-box ul {
  margin: 0;
  padding-left: 1.2rem;
  display: grid;
  gap: 0.5rem;
}
.warning-box li {
  color: var(--text);
  font-size: 0.95rem;
  line-height: 1.55;
}
.warning-box li::marker { color: var(--gold); }

/* ---------- detail box (evidence) ---------- */
.detail-box {
  margin-top: 1.1rem;
  padding: 1rem 1.15rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: rgba(10, 10, 18, 0.45);
}
.detail-box__title {
  margin: 0 0 0.85rem;
  font-family: var(--pixel);
  font-size: 10px;
  letter-spacing: 0.06em;
  color: var(--cyan);
}
.evidence-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.6rem;
  margin: 0;
}
.evidence-list div {
  min-width: 0;
  padding: 0.7rem 0.8rem;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-sm);
  background: var(--surface);
}
.evidence-list dt {
  margin: 0 0 0.3rem;
  font-family: var(--pixel);
  font-size: 8px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--dim);
}
.evidence-list dd {
  margin: 0;
  font-family: var(--mono);
  font-size: 0.9rem;
  color: var(--text);
  overflow-wrap: anywhere;
}
.evidence-list__hex { grid-column: 1 / -1; }
#hex-preview {
  display: block;
  white-space: pre-wrap;
  word-break: break-word;
  letter-spacing: 0.06em;
  color: var(--cyan);
  text-shadow: 0 0 8px rgba(69, 240, 255, 0.25);
}

/* ---------- signature table ---------- */
.signature-panel__lead {
  margin: -0.5rem 0 1.1rem;
  color: var(--dim);
  font-size: 0.95rem;
}
.signature-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.6rem;
  margin: 0;
  padding: 0;
  list-style: none;
}
.signature-list li {
  padding: 0.8rem 0.9rem;
  border: 1px solid var(--line);
  border-left: 3px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--surface);
  transition: border-color var(--duration-fast) ease,
    transform var(--duration-fast) var(--ease-out-expo),
    background var(--duration-fast) ease;
}
.signature-list li:hover {
  border-color: var(--line);
  border-left-color: var(--cyan);
  background: var(--surface-2);
  transform: translateX(3px);
}
.signature-list strong {
  display: block;
  font-size: 0.95rem;
  color: var(--text);
}
.signature-list span {
  display: block;
  margin-top: 0.3rem;
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--dim);
  overflow-wrap: anywhere;
}

/* ---------- footer ---------- */
.shell__footer {
  margin-top: clamp(2.5rem, 6vw, 4rem);
  padding-top: 1.75rem;
  border-top: 1px solid var(--line);
  text-align: center;
}
.shell__footer p {
  font-family: var(--pixel);
  font-size: 9px;
  line-height: 2;
  color: var(--dim);
}
.shell__footer a { color: var(--gold); text-decoration: none; }
.shell__footer a:hover { color: var(--cyan); text-decoration: underline; text-underline-offset: 3px; }

/* ---------- responsive ---------- */
@media (min-width: 640px) {
  .result-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .result-item--wide { grid-column: 1 / -1; }
  .result-item--hero { grid-column: 1 / -1; }
  .evidence-list { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .signature-list { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (min-width: 960px) {
  .result-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .result-item--wide { grid-column: span 2; }
  .result-item--hero { grid-column: 1 / -1; }
  .signature-list { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

/* ---------- reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .drop-zone.is-dragging .drop-zone__scan,
  .privacy-note__lock,
  .status-badge.is-warn,
  .warning-box__siren { animation: none !important; }
  .glitch:hover::before,
  .glitch:hover::after { animation: none !important; opacity: 0 !important; }
  .pick-button:hover,
  .lab-link:hover,
  .lab-link:focus-visible,
  .signature-list li:hover { transform: none; }
}