/* Global reset & variables */
*,
*::before,
*::after { box-sizing: border-box; }

:root {
  --bg: #0b0b0b;
  --fg: #eaeaea;
  --muted: #b8b8b8;
  --green: #00ff88;
  --green-dim: #22cc88;
  --red: #ff4d4d;
  --card: #121212;
  --accent: #00ff88;
  --border: #262626;
  --mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
}

html, body {
  height: 100%;
  background: var(--bg);
  color: var(--fg);
}

body {
  margin: 0;
  font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, "Helvetica Neue", Arial, sans-serif;
  line-height: 1.45;
}

.wrap { max-width: 1000px; margin: 2rem auto; padding: 0 1rem; }
header { margin-bottom: 1.5rem; }
h1 { font-size: clamp(1.6rem, 3.5vw, 2.2rem); margin: 0 0 .5rem; }
p.lead { color: var(--muted); margin: .25rem 0 0; }

/* Layout */
.grid { display: grid; gap: 1rem; grid-template-columns: 1fr; }
@media (min-width: 900px) {
  .grid { grid-template-columns: 1.2fr .8fr; }
}

.panel {
  background: linear-gradient(180deg, #121212, #0f0f0f);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 1rem;
  box-shadow: 0 10px 30px rgba(0,0,0,.35);
}

/* Dropzone */
.drop {
  border: 2px dashed #2a2a2a;
  border-radius: 12px;
  padding: 1.25rem;
  text-align: center;
  transition: border-color .15s, background .15s;
}
.drop.dragover {
  border-color: var(--green);
  background: #0e1b16;
}

/* File row */
.file-row {
  display: flex;
  align-items: center;
  gap: .75rem;
  margin-top: .75rem;
  flex-wrap: wrap;
}

/* Inputs & buttons */
input[type="file"] { display: none; }

.btn {
  -webkit-appearance: none;
  appearance: none;
  background: var(--card);
  border: 1px solid var(--border);
  padding: .6rem .9rem;
  border-radius: 10px;
  color: var(--fg);
  cursor: pointer;
  transition: transform .05s ease, border-color .15s ease, background .15s;
  font-weight: 600;
}
.btn:hover { border-color: var(--green-dim); }
.btn:active { transform: translateY(1px); }
.btn:focus-visible {
  outline: 2px solid var(--green);
  outline-offset: 2px;
}
.btn-primary {
  background: #0f211b;
  border-color: var(--green-dim);
  color: var(--green);
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: .35rem;
  background: #0d0d0d;
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: .35rem .6rem;
  font-size: .85rem;
  color: var(--muted);
  max-width: 100%;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.input {
  width: 100%;
  padding: .65rem .75rem;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: #0e0e0e;
  color: var(--fg);
  outline: none;
}
.input:focus { border-color: var(--green-dim); }

/* Hash rows */
.mono { font-family: var(--mono); }

.row {
  display: grid;
  grid-template-columns: 120px 1fr auto;
  gap: .5rem .75rem;
  align-items: start;
  padding: .6rem .6rem;
  border-bottom: 1px solid #1b1b1b;
}
.row:last-child { border-bottom: none; }

/* Stack the row on narrow screens to prevent overflow */
@media (max-width: 560px) {
  .row {
    grid-template-columns: 1fr;
    align-items: stretch;
  }
}

.alg {
  font-weight: 700;
  color: var(--accent);
  font-size: .95rem;
}

/* Long hashes: horizontal scroll instead of overflow */
.hash {
  background: #0c0c0c;
  border: 1px solid #1f1f1f;
  border-radius: 8px;
  padding: .5rem .6rem;
  min-height: 2.2rem;
  font-family: var(--mono);
  white-space: nowrap;
  overflow-x: auto;
  overflow-y: hidden;
}

/* Make scrollbars subtle */
.hash::-webkit-scrollbar { height: 6px; }
.hash::-webkit-scrollbar-thumb { background: #2a2a2a; border-radius: 6px; }

.controls {
  display: flex;
  gap: .5rem;
  flex-wrap: wrap;
}

.copy { font-size: .85rem; }
.tiny { font-size: .82rem; color: var(--muted); }

.pill {
  padding: .2rem .5rem;
  border-radius: 999px;
  font-weight: 700;
  font-size: .85rem;
}

.ok { color: #031; background: #00ff8833; border: 1px solid var(--green); }
.bad { color: #310; background: #ff4d4d33; border: 1px solid var(--red); }
.neutral { color: #999; background: #1a1a1a; border: 1px solid #2a2a2a; }

.hint { color: var(--muted); font-size: .9rem; margin-top: .5rem; }
footer { margin-top: 1.25rem; color: var(--muted); font-size: .85rem; }

/* Respect reduced motion */
@media (prefers-reduced-motion: reduce) {
  .btn,
  .drop { transition: none; }
}