/* =====================================================================
   style.css : หน้าตาเว็บ (รองรับ light / dark mode และหน้าจอมือถือ)
   ===================================================================== */
:root {
  --bg: #f5f6f8;
  --panel: #ffffff;
  --text: #1c1f24;
  --muted: #6b7280;
  --line: #e3e6ea;
  --accent: #e8582d;
  --ok: #138a4b;
  --bad: #c62828;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #121418;
    --panel: #1b1e24;
    --text: #e8eaed;
    --muted: #9aa0a6;
    --line: #2c3038;
    --ok: #3ccf7f;
    --bad: #ff6b6b;
  }
}

* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 15px/1.5 system-ui, -apple-system, "Segoe UI", "Noto Sans Thai", sans-serif;
}

/* ---------- ส่วนหัว ---------- */
body > header {
  display: flex; justify-content: space-between; align-items: center; gap: 16px;
  padding: 20px 24px; border-bottom: 1px solid var(--line); background: var(--panel);
}
h1 { margin: 0; font-size: 22px; }
.sub { margin: 2px 0 0; color: var(--muted); font-size: 13px; }
.pill { padding: 4px 12px; border-radius: 99px; border: 1px solid var(--line); font-size: 13px; white-space: nowrap; }
.pill.ok { color: var(--ok); border-color: currentColor; }
.pill.bad { color: var(--bad); border-color: currentColor; }

/* ---------- layout 2 คอลัมน์ (มือถือ = 1 คอลัมน์) ---------- */
main {
  display: grid; grid-template-columns: 340px 1fr; gap: 20px;
  padding: 20px 24px; max-width: 1400px; margin: 0 auto;
}
@media (max-width: 820px) {
  main { grid-template-columns: 1fr; padding: 16px; }
  body > header { padding: 16px; flex-wrap: wrap; }
}

.panel { background: var(--panel); border: 1px solid var(--line); border-radius: 12px; padding: 18px; }
.controls h2 { font-size: 15px; margin: 4px 0 10px; }
.controls h3 { font-size: 13px; font-weight: 500; color: var(--muted); margin: 14px 0 8px; }
.controls h2:not(:first-child) { margin-top: 22px; }

/* กล่องลากวางไฟล์ */
.drop {
  display: flex; flex-direction: column; align-items: center; gap: 4px; text-align: center;
  padding: 26px 12px; border: 2px dashed var(--line); border-radius: 10px; cursor: pointer;
  transition: border-color .15s, background .15s;
}
.drop:hover, .drop.hover { border-color: var(--accent); background: color-mix(in srgb, var(--accent) 7%, transparent); }
.drop small { color: var(--muted); }

.slider { display: block; font-size: 13px; }
.slider input { width: 100%; accent-color: var(--accent); }

button#run {
  width: 100%; margin-top: 18px; padding: 12px; border: 0; border-radius: 8px;
  background: var(--accent); color: #fff; font: inherit; font-weight: 600; cursor: pointer;
}
button#run:disabled { opacity: .5; cursor: default; }

/* ---------- ผลลัพธ์ ---------- */
.results { display: grid; grid-template-columns: minmax(0, 860px); gap: 20px; align-content: start; }
.empty { grid-column: 1 / -1; padding: 60px 20px; text-align: center; color: var(--muted); border: 1px dashed var(--line); border-radius: 12px; }
.empty.error { color: var(--bad); }
.card { background: var(--panel); border: 1px solid var(--line); border-radius: 12px; overflow: hidden; }
.card header { padding: 12px 16px; display: flex; flex-direction: column; }
.card header h2 { margin: 0; font-size: 18px; text-transform: capitalize; }
.card header span { color: var(--muted); font-size: 13px; }
.card canvas { display: block; width: 100%; height: auto; background: #000; }
.card table { width: 100%; border-collapse: collapse; font-size: 14px; }
.card td { padding: 8px 16px; border-top: 1px solid var(--line); }
.card td i { display: inline-block; width: 10px; height: 10px; border-radius: 2px; margin-right: 8px; }
.card td small { color: var(--muted); }
.card td.num { text-align: right; font-variant-numeric: tabular-nums; width: 70px; }
.bar { height: 6px; background: var(--line); border-radius: 3px; overflow: hidden; min-width: 60px; }
.bar span { display: block; height: 100%; }