/* ============================================================================
   REEL/REAL — SHARED STYLE LAYER
   ----------------------------------------------------------------------------
   This file is the single source of visual truth for BOTH surfaces:
     site/css/tokens.css        <-- you are here (the master copy)
     extension/css/tokens.css   <-- byte-identical duplicate

   Chrome extensions cannot reach outside their own folder, so the extension
   needs its own physical copy. Edit THIS file, then copy it across. Everything
   below is surface-agnostic: design tokens plus the handful of primitives that
   genuinely look the same in a 1320px page and a 380px popup.

   Anything that is layout-specific lives in site/css/site.css or
   extension/css/popup.css instead.
   ========================================================================== */

:root {
  /* ---- Palette ---- */
  --bg-cream: #F5F3EE;
  --bg-pink: #E8C5D8;
  --forest-green: #144D37;
  --forest-dark: #0A3223;
  --accent-orange: #EF6337;
  --accent-blue: #3A82C4;
  --text-dark: #144D37;
  --text-muted: #2A6B50;

  --white: #ffffff;
  --white-trans: rgba(255, 255, 255, 0.72);
  --white-glass: rgba(255, 255, 255, 0.65);
  --green-glass: rgba(20, 77, 55, 0.05);
  --border-color: rgba(20, 77, 55, 0.15);

  /* ---- Verdict semantics ----
     These three names are the contract between the CSS and the detector's
     `severity` / timeline `label` values. Do not rename without updating
     js/detector.js. */
  --fake: #EF6337;   /* severity: bad  / label: synthetic */
  --warn: #D97706;   /* severity: warn / label: uncertain */
  --true: #144D37;   /* severity: ok   / label: authentic */

  /* ---- Type families ----
     Tokenised so the extension can swap in local fallbacks without the
     component CSS knowing anything about it. */
  --font-sans: "Plus Jakarta Sans", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-display: "Squada One", "Arial Narrow", Impact, sans-serif;
  --font-serif: "Instrument Serif", Georgia, "Times New Roman", serif;

  /* ---- Fluid type scale ----
     clamp() means the site scales with the viewport. The popup has a fixed
     380px viewport, so it lands near the bottom of every clamp automatically. */
  --step--1: clamp(.72rem, .68rem + .2vw, .82rem);
  --step-0: clamp(.9rem, .85rem + .25vw, 1.02rem);
  --step-1: clamp(1.1rem, 1rem + .45vw, 1.3rem);
  --step-2: clamp(1.6rem, 1.4rem + 1vw, 2.2rem);
  --step-3: clamp(2.4rem, 1.8rem + 3vw, 4.2rem);

  --gutter: clamp(20px, 5vw, 80px);
  --maxw: 1320px;
  --radius: 24px;
  --radius-sm: 14px;
}

/* ---- Reset / base ---- */
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { animation: none !important; transition: none !important; }
}

a { color: inherit; text-decoration: none; }

/* The `hidden` attribute has to win over component styles.
   A browser's own [hidden] rule is a user-agent rule, so ANY author rule that
   sets display beats it - `.btn { display: inline-block }` was quietly
   un-hiding buttons that JavaScript had marked hidden, leaving a "Save signed
   receipt" button on a result that has no receipt. */
[hidden] { display: none !important; }
:focus-visible { outline: 2px solid var(--forest-green); outline-offset: 3px; }

/* Visually hidden but still announced by screen readers. Used for the real
   <input type="file">, which we hide behind a styled button. */
.sr {
  position: absolute; width: 1px; height: 1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap;
}

.serif { font-family: var(--font-serif); font-style: italic; }
.sans-bold { font-family: var(--font-display); text-transform: uppercase; letter-spacing: .05em; }

/* ============================================================================
   SHARED PRIMITIVES — identical on both surfaces
   ========================================================================== */

/* Frosted card. backdrop-filter needs something behind it to blur, so this
   only reads as "glass" over the cream/pink page backgrounds. */
.glass-panel {
  background: var(--white-glass);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  box-shadow: 0 12px 40px rgba(20, 77, 55, 0.05);
}

/* Brutalist card alternative */
.brutalist-panel {
  background: var(--white);
  border: 3px solid var(--forest-green);
  border-radius: 0;
  box-shadow: 8px 8px 0 var(--forest-green);
  position: relative;
}

.btn {
  display: inline-block;
  padding: 14px 36px;
  border: none;
  border-radius: 50px;
  background: var(--accent-orange);
  color: var(--white);
  font: inherit;
  font-size: var(--step-0);
  font-weight: 700;
  cursor: pointer;
  transition: all .2s ease;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  box-shadow: 0 6px 18px rgba(239, 99, 55, 0.25);
}
.btn:hover { background: #d85228; transform: translateY(-2px); box-shadow: 0 10px 22px rgba(239, 99, 55, 0.35); }
.btn.ghost {
  background: var(--white); color: var(--forest-green);
  border: 1px solid var(--border-color); box-shadow: none; text-transform: none;
}
.btn.ghost:hover { background: var(--bg-cream); transform: translateY(-2px); }
.btn[disabled] { opacity: .4; cursor: not-allowed; transform: none; }

/* Verdict pill. Defaults to "synthetic"; .clean flips it to authentic. */
.badge {
  padding: 10px 20px;
  font-size: var(--step--1);
  font-weight: 700;
  border-radius: 50px;
  border: 1px solid var(--fake);
  color: var(--fake);
  background: rgba(239, 99, 55, 0.1);
  white-space: nowrap;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.badge.clean { border-color: var(--true); color: var(--true); background: rgba(20, 77, 55, 0.1); }

/* Status dot */
.dot { width: 8px; height: 8px; border-radius: 50%; display: inline-block; }
.dot.f { background: var(--fake); box-shadow: 0 0 8px var(--fake); }
.dot.t { background: var(--true); box-shadow: 0 0 8px var(--true); }

/* Evidence row: label on the left, detector finding on the right.
   The severity class comes straight off result.artifacts[].severity. */
.ev {
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  padding: 12px 0; border-top: 1px solid var(--border-color);
  font-size: var(--step--1);
}
.ev:first-of-type { border-top: 0; }
.ev b { font-weight: 600; color: var(--forest-green); }
.ev span { color: var(--text-muted); font-weight: 600; text-align: right; }
.ev span.flag, .ev span.warn { color: var(--warn); }
.ev span.bad { color: var(--fake); }
.ev span.ok { color: var(--true); }
/* "na" = the model does not measure this signal at all. Deliberately muted and
   italic so an unmeasured row can never be mistaken at a glance for a finding. */
.ev span.na { color: var(--text-muted); font-weight: 500; font-style: italic; opacity: .7; }

/* Per-second timeline. Each <button> is one second of video; its height is the
   synthetic score and its class is the verdict label for that second. */
.bars { display: flex; align-items: flex-end; gap: 4px; height: 100px; }
.bars button {
  flex: 1; border: 0; padding: 0; background: var(--true);
  cursor: pointer; border-radius: 4px; opacity: .85; transition: all .15s ease;
}
.bars button.w { background: var(--warn); }
.bars button.f { background: var(--fake); }
.bars button:hover { opacity: 1; transform: scaleY(1.08); }
.bars button.now { opacity: 1; box-shadow: 0 0 0 2px var(--white) inset; }

.axis {
  display: flex; justify-content: space-between; margin-top: 12px;
  font-size: var(--step--1); color: var(--text-muted); font-weight: 600;
}
.legend {
  display: flex; flex-wrap: wrap; gap: 20px; margin-top: 20px;
  font-size: var(--step--1); color: var(--text-muted); font-weight: 600;
}
.legend i { width: 10px; height: 10px; border-radius: 50%; display: inline-block; margin-right: 6px; }

/* Determinate progress bar used during analysis on both surfaces. */
.bar { height: 6px; background: rgba(20, 77, 55, 0.1); border-radius: 10px; overflow: hidden; display: none; }
.bar.on { display: block; }
.bar i { display: block; height: 100%; width: 0; background: var(--forest-green); transition: width .2s linear; }
.bar-label { margin-top: 10px; font-size: var(--step--1); color: var(--forest-green); font-weight: 600; display: none; }
.bar-label.on { display: block; }

/* Dashed upload target. .over is toggled during dragenter/dragover. */
.drop {
  border: 3px solid var(--forest-green);
  background: var(--white);
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
  border-radius: 0;
  text-align: center;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  box-shadow: 8px 8px 0 var(--forest-green);
  position: relative;
  overflow: hidden;
}
.drop::before {
  content: "";
  position: absolute;
  top: 0; left: -100%;
  width: 100%; height: 100%;
  background: linear-gradient(120deg, transparent, rgba(239, 99, 55, 0.06), transparent);
  transition: all 0.5s;
}
.drop:hover::before { left: 100%; }
.drop:hover {
  transform: translate(-3px, -3px);
  box-shadow: 11px 11px 0 var(--forest-green);
}
.drop.over {
  border-color: var(--accent-orange);
  background: var(--white);
  box-shadow: 8px 8px 0 var(--accent-orange);
}