/* Inner Grove — Wick Lab (dark theme) */

:root {
  --ink: #17211c;
  --ink-soft: #37423b;
  --ink-deep: #0f1713;
  --paper: #f5f1e8;
  --paper-dim: #c9d2de;
  --grove: #243b2e;
  --grove-soft: #6f8064;
  --amber: #e7b17d;
  --mist: #8fa4b3;

  --font-sans: "Inter", ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-serif: "Cormorant Garamond", "Times New Roman", serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: var(--font-sans);
  color: var(--paper);
  background:
    radial-gradient(1200px 800px at 20% -10%, #1d2c24 0%, transparent 60%),
    radial-gradient(1000px 700px at 110% 10%, #1a2a22 0%, transparent 55%),
    var(--ink-deep);
  min-height: 100vh;
}

.app {
  max-width: 1100px;
  margin: 0 auto;
  padding: 48px 28px 80px;
}

.app__header { margin-bottom: 28px; }
.app__title {
  font-family: var(--font-serif);
  font-weight: 500;
  font-size: clamp(2rem, 4vw, 3rem);
  letter-spacing: 0.02em;
  margin: 0;
  color: var(--paper);
}
.app__subtitle {
  margin: 6px 0 0;
  color: var(--mist);
  font-size: 0.95rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.app__intro {
  margin: 14px 0 0;
  max-width: 64ch;
  color: var(--paper-dim);
  line-height: 1.55;
}

/* Layout */
.app { display: grid; gap: 24px; }
@media (min-width: 900px) {
  .app { grid-template-columns: 360px 1fr; align-items: start; }
  .app__header { grid-column: 1 / -1; }
}

/* Panel */
.panel {
  background: rgba(23, 33, 28, 0.6);
  border: 1px solid rgba(111, 128, 100, 0.25);
  border-radius: 14px;
  padding: 22px;
  backdrop-filter: blur(6px);
}

.controls { display: grid; gap: 14px; }

.field { display: grid; gap: 6px; }
.field label {
  font-size: 0.8rem;
  color: var(--paper-dim);
  letter-spacing: 0.04em;
}
.field input[type="number"] {
  width: 100%;
  padding: 10px 12px;
  background: rgba(15, 23, 19, 0.7);
  border: 1px solid rgba(111, 128, 100, 0.35);
  border-radius: 8px;
  color: var(--paper);
  font-size: 1rem;
  transition: border-color .15s ease, box-shadow .15s ease;
}
.field input[type="number"]:focus {
  outline: none;
  border-color: var(--amber);
  box-shadow: 0 0 0 3px rgba(231, 177, 125, 0.15);
}

.field__row {
  display: grid;
  grid-template-columns: 76px 1fr;
  gap: 10px;
  align-items: center;
}
.field input[type="range"] {
  width: 100%;
  accent-color: var(--amber);
  cursor: pointer;
}

.field--check {
  display: flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
  padding: 6px 0;
}
.field--check input { width: 16px; height: 16px; accent-color: var(--amber); }

.btn {
  margin-top: 6px;
  padding: 12px 18px;
  background: linear-gradient(180deg, var(--grove), #1c2f25);
  color: var(--paper);
  border: 1px solid rgba(111, 128, 100, 0.4);
  border-radius: 10px;
  font-size: 1rem;
  letter-spacing: 0.02em;
  cursor: pointer;
  transition: transform .12s ease, box-shadow .12s ease, border-color .12s ease;
}
.btn:hover { border-color: var(--amber); box-shadow: 0 6px 20px rgba(0,0,0,0.35); transform: translateY(-1px); }
.btn:active { transform: translateY(0); }

/* Preview */
.preview { display: grid; gap: 12px; }
.preview__meta {
  font-size: 0.85rem;
  color: var(--mist);
  letter-spacing: 0.03em;
}
.preview__canvas {
  background:
    linear-gradient(45deg, rgba(255,255,255,0.03) 25%, transparent 25%, transparent 75%, rgba(255,255,255,0.03) 75%),
    linear-gradient(45deg, rgba(255,255,255,0.03) 25%, transparent 25%, transparent 75%, rgba(255,255,255,0.03) 75%),
    rgba(23, 33, 28, 0.4);
  background-size: 24px 24px;
  background-position: 0 0, 12px 12px;
  border: 1px solid rgba(111, 128, 100, 0.25);
  border-radius: 14px;
  padding: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 420px;
  overflow: auto;
}
.preview__canvas svg {
  max-width: 100%;
  height: auto;
  display: block;
  filter: drop-shadow(0 4px 24px rgba(0,0,0,0.4));
}

/* Footer */
.app__footer {
  grid-column: 1 / -1;
  margin-top: 40px;
  padding-top: 20px;
  border-top: 1px solid rgba(111, 128, 100, 0.2);
  text-align: center;
}
.app__footer a {
  color: var(--mist);
  text-decoration: none;
  font-size: 0.85rem;
  letter-spacing: 0.04em;
  transition: color .15s ease;
}
.app__footer a:hover { color: var(--amber); }