@import url('https://fonts.googleapis.com/css2?family=Fjalla+One&family=Inter:wght@400;500;600;700&family=IBM+Plex+Mono:wght@400;500;600&display=swap');

:root {
  --bg: #0B0E11;
  --panel: #1B2028;
  --panel-border: #262D38;
  --text: #EDEFF2;
  --text-dim: #7C8797;
  --copper: #C4703C;
  --copper-light: #D98A56;
  --signal: #3FC7B0;
  --signal-light: #5FE0C8;
  --alert: #D9564B;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: 'Inter', system-ui, sans-serif;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.readout {
  font-family: 'IBM Plex Mono', ui-monospace, monospace;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.02em;
}

h1, h2, .display {
  font-family: 'Fjalla One', Impact, sans-serif;
  letter-spacing: 0.01em;
  font-weight: 400;
}

a { color: inherit; }

/* ── Navbar ── */
header.nav {
  border-bottom: 1px solid var(--panel-border);
  background: #12161B;
}
.nav-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.brand { font-family: 'Fjalla One', sans-serif; font-size: 1.25rem; text-decoration: none; }
.brand span { color: var(--copper-light); }
.nav-links { display: flex; align-items: center; gap: 24px; font-size: 0.9rem; }
.nav-links a { text-decoration: none; color: var(--text); }
.nav-links a:hover { color: var(--signal-light); }
.btn-outline {
  padding: 8px 16px; border-radius: 6px; border: 1px solid var(--copper);
  color: var(--copper-light); text-decoration: none;
}
.btn-outline:hover { background: var(--copper); color: var(--bg); }

main { flex: 1; }

footer {
  border-top: 1px solid var(--panel-border);
  padding: 24px; display: flex; justify-content: space-between;
  color: var(--text-dim); font-size: 0.85rem;
}

/* ── Layout helpers ── */
.wrap { max-width: 1100px; margin: 0 auto; padding: 0 24px; }
.wrap-sm { max-width: 420px; margin: 0 auto; padding: 0 24px; }
.wrap-md { max-width: 640px; margin: 0 auto; padding: 0 24px; }

/* ── Hero ── */
.hero { padding: 80px 0 60px; }
.eyebrow { font-family: 'IBM Plex Mono', monospace; color: var(--copper-light); font-size: 0.9rem; margin-bottom: 16px; }
.hero h1 { font-size: 3rem; line-height: 1.1; max-width: 640px; margin: 0; }
.hero p { color: var(--text); font-size: 1.15rem; max-width: 520px; margin-top: 24px; opacity: 0.85; }
.hero-actions { margin-top: 32px; display: flex; gap: 16px; flex-wrap: wrap; }

.btn-primary {
  padding: 12px 24px; border-radius: 6px; border: none; background: var(--copper);
  color: var(--bg); font-weight: 600; text-decoration: none; cursor: pointer;
  font-size: 1rem; display: inline-block;
}
.btn-primary:hover { background: var(--copper-light); }
.btn-primary:disabled { opacity: 0.5; cursor: not-allowed; }

.btn-secondary {
  padding: 12px 24px; border-radius: 6px; border: 1px solid #3A4352;
  color: var(--text); text-decoration: none; font-size: 1rem; background: none; cursor: pointer;
}
.btn-secondary:hover { border-color: var(--signal-light); color: var(--signal-light); }

.steps { border-top: 1px solid var(--panel-border); background: #12161B; padding: 56px 0; }
.steps-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; }
@media (max-width: 720px) { .steps-grid { grid-template-columns: 1fr; } }
.step-label { font-family: 'IBM Plex Mono', monospace; color: var(--signal-light); font-size: 0.9rem; }
.step-body { margin-top: 8px; opacity: 0.85; }

/* ── Forms ── */
.form-page { padding: 60px 0; }
label { display: block; font-size: 0.85rem; color: var(--text-dim); margin-bottom: 6px; }
input, select {
  width: 100%; background: var(--panel); border: 1px solid var(--panel-border);
  border-radius: 6px; padding: 10px 12px; color: var(--text); font-size: 1rem;
  font-family: inherit; margin-bottom: 16px;
}
input.readout, select.readout { font-family: 'IBM Plex Mono', monospace; }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.checkbox-row { display: flex; align-items: center; gap: 8px; margin-bottom: 16px; }
.checkbox-row input { width: auto; margin: 0; }
.error-text { color: var(--alert); font-size: 0.9rem; margin-bottom: 12px; }
.hint { color: var(--text-dim); font-size: 0.85rem; margin-top: 12px; }

/* ── Dashboard ── */
.page-header { display: flex; align-items: center; justify-content: space-between; padding: 40px 0 32px; }
.device-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 16px; padding-bottom: 60px; }
.device-card {
  display: block; background: var(--panel); border: 1px solid var(--panel-border);
  border-radius: 10px; padding: 20px; text-decoration: none; color: var(--text);
}
.device-card:hover { border-color: var(--copper); }
.device-card .name { font-weight: 600; }
.device-card .meta { color: var(--text-dim); font-size: 0.85rem; margin-top: 4px; }
.badge { font-size: 0.7rem; padding: 3px 8px; border-radius: 4px; font-family: 'IBM Plex Mono', monospace; }
.badge.public { background: rgba(63,199,176,0.2); color: var(--signal-light); }
.badge.private { background: var(--panel-border); color: var(--text-dim); }
.card-top { display: flex; justify-content: space-between; align-items: start; }

.empty-state {
  border: 1px dashed var(--panel-border); border-radius: 10px; padding: 60px 20px;
  text-align: center; color: var(--text-dim);
}

/* ── Device detail ── */
.reading-panel {
  background: var(--panel); border: 1px solid var(--panel-border); border-radius: 10px;
  padding: 28px; margin-top: 24px;
}
.metrics-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(110px, 1fr)); gap: 20px; }
.metric-value { font-size: 1.7rem; color: var(--signal-light); }
.metric-label { color: var(--text-dim); font-size: 0.8rem; margin-top: 4px; }
.timestamp { color: var(--text-dim); font-size: 0.8rem; margin-top: 20px; }

.controls-row { margin-top: 24px; display: flex; align-items: center; gap: 16px; flex-wrap: wrap; }
.controls-row .spacer { margin-left: auto; }
.btn-danger {
  padding: 8px 14px; border-radius: 6px; border: 1px solid var(--alert); color: var(--alert);
  background: none; cursor: pointer; font-size: 0.85rem;
}
.btn-danger:hover { background: var(--alert); color: var(--bg); }

.history-row { display: flex; justify-content: space-between; font-size: 0.85rem; border-bottom: 1px solid var(--panel-border); padding: 8px 0; }

/* ── Map ── */
#map { height: 70vh; width: 100%; background: var(--panel); }
.map-header { padding: 24px 0; }
.leaflet-popup-content-wrapper { background: var(--panel); color: var(--text); }
.leaflet-popup-tip { background: var(--panel); }
.popup-title { font-weight: 600; }
.popup-cat { color: var(--text-dim); font-size: 0.85rem; }
.popup-link { color: var(--copper-light); }