/* LOCOMOTIVE brand palette */
:root {
  --black:  #000000;
  --teal:   #A6EDDD;
  --violet: #6E29F6;
  --lime:   #A5E003;
  --sunrise:#FCA311;
  --dgray:  #55524D;
  --mgray:  #868380;
  --lgray:  #F2F2F2;
  --white:  #FFFFFF;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: 'Plus Jakarta Sans', system-ui, sans-serif;
  background: var(--lgray);
  color: var(--black);
  min-height: 100vh;
}

/* ── Header ─────────────────────────────────────────────────────────────── */
header {
  background: var(--black);
  color: var(--white);
  padding: 20px 32px;
  display: flex;
  align-items: center;
  gap: 16px;
}
.header-logo {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--teal);
  text-transform: uppercase;
  margin-bottom: 4px;
}
header h1 { font-size: 18px; font-weight: 700; }
.header-domain {
  font-size: 13px;
  color: var(--mgray);
  margin-left: auto;
}

/* ── Layout ──────────────────────────────────────────────────────────────── */
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 24px 32px;
}

/* ── Input panel ────────────────────────────────────────────────────────── */
.input-panel {
  background: var(--white);
  border: 1px solid #e0e0e0;
  border-radius: 8px;
  padding: 28px 32px;
  margin-bottom: 24px;
}
.input-panel h2 {
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 20px;
}
.form-row {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
  align-items: flex-start;
}
.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.form-group.domain { min-width: 220px; }
.form-group.dr { width: 100px; flex-shrink: 0; }
.form-group.dr input { width: 100px; }
.form-group.keywords { flex: 1; min-width: 320px; }
label {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--dgray);
}
input[type="text"], textarea {
  font-family: inherit;
  font-size: 13px;
  padding: 9px 12px;
  border: 1px solid #d0d0d0;
  border-radius: 4px;
  outline: none;
  width: 100%;
  transition: border-color 0.15s;
}
input[type="text"]:focus, textarea:focus {
  border-color: var(--violet);
}
textarea {
  height: 120px;
  resize: vertical;
  line-height: 1.5;
}
.kw-counter {
  font-size: 11px;
  color: var(--mgray);
  text-align: right;
}
.kw-counter.over-limit { color: #c0392b; font-weight: 700; }
.form-actions {
  display: flex;
  align-items: flex-end;
  padding-bottom: 2px;
}
.btn-run {
  padding: 10px 28px;
  background: var(--black);
  color: var(--white);
  border: none;
  border-radius: 4px;
  font-family: inherit;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.04em;
  cursor: pointer;
  transition: background 0.15s;
  white-space: nowrap;
}
.btn-run:hover:not(:disabled) { background: #222; }
.btn-run:disabled { opacity: 0.5; cursor: not-allowed; }

/* ── Status bar ─────────────────────────────────────────────────────────── */
#status-bar {
  display: none;
  background: var(--black);
  color: var(--white);
  font-size: 12px;
  padding: 10px 16px;
  border-radius: 6px;
  margin-bottom: 20px;
  align-items: center;
  gap: 12px;
}
#status-bar.visible { display: flex; }
.spinner {
  width: 14px; height: 14px;
  border: 2px solid #555;
  border-top-color: var(--teal);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  flex-shrink: 0;
}
@keyframes spin { to { transform: rotate(360deg); } }

.error-bar {
  background: #2d1a1a;
  color: #f5a0a0;
  font-size: 12px;
  padding: 10px 16px;
  border-radius: 6px;
  border-left: 3px solid #c0392b;
  margin-bottom: 20px;
  display: none;
}
.error-bar.visible { display: block; }

/* ── Forecast section ───────────────────────────────────────────────────── */
#forecast-section { display: none; }
#forecast-section.visible { display: block; }

/* ── Controls ───────────────────────────────────────────────────────────── */
.controls {
  display: flex;
  gap: 32px;
  flex-wrap: wrap;
  background: var(--white);
  border: 1px solid #e0e0e0;
  border-radius: 8px;
  padding: 20px 24px;
  margin-bottom: 24px;
  align-items: flex-end;
}
.ctrl-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-width: 180px;
}
.slider-wrap {
  display: flex;
  align-items: center;
  gap: 10px;
}
input[type="range"] {
  width: 180px;
  accent-color: var(--violet);
  cursor: pointer;
}
.val-display {
  font-size: 13px;
  font-weight: 600;
  min-width: 80px;
  color: var(--black);
}
.axis-labels {
  display: flex;
  justify-content: space-between;
  font-size: 10px;
  color: var(--mgray);
  width: 180px;
}
.cache-badge {
  font-size: 11px;
  color: var(--mgray);
  margin-top: 4px;
}
.reset-btn {
  padding: 8px 18px;
  background: var(--black);
  color: var(--white);
  border: none;
  border-radius: 4px;
  font-size: 12px;
  font-weight: 700;
  cursor: pointer;
  letter-spacing: 0.04em;
  font-family: inherit;
  transition: background 0.15s;
}
.reset-btn:hover { background: #333; }
.peak-stat {
  margin-left: auto;
  text-align: right;
}
.peak-stat label { text-align: right; }
#peakTraffic {
  font-size: 28px;
  font-weight: 800;
  color: var(--black);
  line-height: 1.1;
}
.peak-sub { font-size: 11px; color: var(--mgray); }

/* ── Chart ──────────────────────────────────────────────────────────────── */
#chart-wrap {
  background: var(--white);
  border: 1px solid #e0e0e0;
  border-radius: 8px;
  padding: 20px 20px 12px;
  position: relative;
  overflow: visible;
}
#chart-wrap svg { overflow: visible; }
.tooltip {
  position: absolute;
  background: var(--black);
  color: var(--white);
  padding: 8px 12px;
  border-radius: 4px;
  font-size: 12px;
  line-height: 1.7;
  pointer-events: none;
  display: none;
  white-space: nowrap;
  z-index: 10;
}

/* ── Keyword table ──────────────────────────────────────────────────────── */
.kw-table-wrap {
  margin-top: 24px;
  background: var(--white);
  border: 1px solid #e0e0e0;
  border-radius: 8px;
  overflow: hidden;
}
.kw-table-wrap summary {
  padding: 14px 20px;
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
  background: var(--lgray);
  border-bottom: 1px solid #e0e0e0;
  user-select: none;
}
.kw-table-wrap table {
  width: 100%;
  border-collapse: collapse;
  font-size: 12px;
}
.kw-table-wrap th {
  background: var(--black);
  color: var(--white);
  padding: 10px 14px;
  text-align: left;
  font-weight: 600;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.kw-table-wrap td {
  padding: 9px 14px;
  border-bottom: 1px solid #f0f0f0;
  color: var(--dgray);
}
.kw-table-wrap tr:hover td { background: var(--lgray); }
.pill {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 3px;
  font-size: 10px;
  font-weight: 700;
  color: var(--black);
}

/* ── Footer ─────────────────────────────────────────────────────────────── */
footer {
  margin-top: 32px;
  padding: 16px 0;
  font-size: 11px;
  color: var(--mgray);
  text-align: center;
}

/* ── D3 axis text ────────────────────────────────────────────────────────── */
.tick text { font-family: 'Plus Jakarta Sans', system-ui, sans-serif; }