:root {
  --bg: #f3efe7;
  --panel: rgba(255, 252, 246, 0.92);
  --ink: #1f2621;
  --muted: #5f6b62;
  --accent: #18654b;
  --accent-soft: #dcefe6;
  --border: rgba(31, 38, 33, 0.12);
  --shadow: 0 24px 60px rgba(24, 53, 41, 0.12);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Trebuchet MS", "Segoe UI", sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at top left, rgba(24, 101, 75, 0.16), transparent 28%),
    linear-gradient(160deg, #fcfaf4 0%, var(--bg) 52%, #e1e9e0 100%);
}

.app-shell { max-width: 1040px; margin: 0 auto; padding: 48px 20px 28px; }
.hero { margin-bottom: 24px; }
.eyebrow, .subtitle, .note, .site-footer { color: var(--muted); }
.eyebrow { margin: 0 0 10px; text-transform: uppercase; letter-spacing: 0.18em; font-size: 0.78rem; }
h1, h2, p { margin-top: 0; }
h1 { margin-bottom: 8px; font-size: clamp(2.6rem, 7vw, 4.8rem); line-height: 0.95; }
.subtitle { margin-bottom: 0; font-size: 1.05rem; }

.panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 24px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(10px);
}

.status-panel, .workspace { margin-top: 20px; }
.status-panel, .dialer-panel, .config-panel { padding: 24px; }
.workspace { display: grid; gap: 20px; grid-template-columns: minmax(0, 1.2fr) minmax(280px, 0.8fr); }
.status-grid, .config-list { display: grid; gap: 14px; margin: 0; }
.status-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.status-grid div, .config-list div { padding: 14px 16px; border-radius: 16px; background: var(--accent-soft); }
dt { margin-bottom: 6px; font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--muted); }
dd { margin: 0; font-weight: 700; }

label { display: block; margin-bottom: 8px; font-weight: 700; }
input {
  width: 100%;
  padding: 15px 16px;
  border: 1px solid var(--border);
  border-radius: 16px;
  background: #fff;
  color: var(--ink);
  font-size: 1rem;
}

.dial-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin: 18px 0;
}

.dial-grid span, button {
  display: grid;
  place-items: center;
  min-height: 56px;
  border-radius: 18px;
}

.dial-grid span { background: #fff; border: 1px solid var(--border); font-size: 1.2rem; }
.actions { display: grid; gap: 10px; grid-template-columns: repeat(2, 1fr); }
button {
  border: 0;
  background: var(--accent);
  color: #fff;
  font-size: 1rem;
  font-weight: 700;
}

button[disabled] { opacity: 0.55; cursor: not-allowed; }
.note { margin: 14px 0 0; }
.site-footer { padding: 0 20px 28px; text-align: center; font-size: 0.92rem; }

@media (max-width: 760px) {
  .app-shell { padding-top: 32px; }
  .workspace, .status-grid { grid-template-columns: 1fr; }
}