/* firewriter.css — design defaults: light only, #000–#333 text, min 18px body */
:root {
  --bg: #ffffff;
  --surface: #f7f5f0;
  --text: #111111;
  --text-secondary: #555555;
  --text-tertiary: #888888;
  --border: rgba(0, 0, 0, 0.12);
  --border-strong: rgba(0, 0, 0, 0.25);
  --danger: #a32d2d;
  --success: #0f6e56;
  --radius: 8px;
  --radius-lg: 12px;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  --font-serif: "Iowan Old Style", "Palatino", Georgia, serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 18px;
  line-height: 1.5;
}

body {
  min-height: 100vh;
}

.container {
  max-width: 860px;
  margin: 0 auto;
  padding: 32px 20px;
}

h1, h2, h3 {
  font-family: var(--font-serif);
  font-weight: 500;
  margin: 0 0 8px;
  color: var(--text);
}

h1 { font-size: 32px; }
h2 { font-size: 22px; }

p { color: var(--text); margin: 0 0 12px; }
.muted { color: var(--text-secondary); }
.tiny { font-size: 14px; color: var(--text-tertiary); }

a { color: var(--text); }

button, input[type="text"], input[type="email"], input[type="range"] {
  font-family: inherit;
  font-size: 15px;
}

button {
  background: var(--bg);
  border: 0.5px solid var(--border-strong);
  border-radius: var(--radius);
  padding: 8px 16px;
  cursor: pointer;
  color: var(--text);
  transition: background 0.1s;
}
button:hover { background: var(--surface); }
button:active { transform: scale(0.98); }
button:disabled { opacity: 0.5; cursor: default; }
button.primary {
  font-weight: 500;
  border-color: #000;
  background: #000;
  color: #fff;
}
button.primary:hover { background: #222; }

input[type="text"], input[type="email"] {
  width: 100%;
  padding: 10px 12px;
  border: 0.5px solid var(--border-strong);
  border-radius: var(--radius);
  background: var(--bg);
  color: var(--text);
  font-size: 16px;
}
input[type="text"]:focus, input[type="email"]:focus {
  outline: none;
  border-color: #000;
}

input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  height: 4px;
  background: var(--border);
  border-radius: 2px;
  outline: none;
}
input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 16px; height: 16px;
  border-radius: 50%;
  background: #000;
  cursor: pointer;
}
input[type="range"]::-moz-range-thumb {
  width: 16px; height: 16px;
  border-radius: 50%;
  background: #000;
  cursor: pointer;
  border: none;
}

.card {
  background: var(--surface);
  border-radius: var(--radius-lg);
  padding: 16px 20px;
}

.row { display: flex; gap: 12px; align-items: center; flex-wrap: wrap; }
.grid-2 { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 16px; }
@media (max-width: 640px) { .grid-2 { grid-template-columns: 1fr; } }

.label { font-size: 13px; color: var(--text-secondary); text-transform: uppercase; letter-spacing: 0.5px; }

.header {
  display: flex; justify-content: space-between; align-items: baseline;
  margin-bottom: 24px;
}
.brand { font-family: var(--font-serif); font-size: 24px; font-weight: 500; }

.stats { display: flex; gap: 20px; }
.stat { text-align: right; }
.stat .num { font-family: var(--font-mono); font-size: 22px; font-weight: 500; line-height: 1; }
.stat .cap { font-size: 11px; color: var(--text-tertiary); text-transform: uppercase; letter-spacing: 0.5px; }

.hidden { display: none; }