:root {
  --bg: #0a0c0e;
  --panel: #12161a;
  --panel-border: #1f262c;
  --text: #e7eaee;
  --text-dim: #8a93a0;
  --text-faint: #565f6a;
  --amber: #ffb020;
  --amber-dim: #7a5a1a;
  --green: #3ddc97;
  --red: #ef5350;
  --mono: "IBM Plex Mono", ui-monospace, "SF Mono", monospace;
  --sans: "IBM Plex Sans", system-ui, sans-serif;
  --radius: 3px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  min-height: 100vh;
}

body {
  background-image:
    linear-gradient(rgba(255,255,255,0.015) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.015) 1px, transparent 1px);
  background-size: 28px 28px;
}

.screen { min-height: 100vh; }
[hidden] { display: none !important; }

button {
  font-family: var(--sans);
  cursor: pointer;
}

/* ---------- Brand ---------- */
.brand { display: flex; align-items: center; gap: 0.5rem; }
.brand-mark { color: var(--amber); font-size: 1.1rem; text-shadow: 0 0 8px rgba(255,176,32,0.5); }
.brand-name {
  font-family: var(--mono);
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  color: var(--text-dim);
}

/* ---------- Login ---------- */
#login-screen {
  display: flex;
  align-items: center;
  justify-content: center;
}
.login-card {
  width: min(360px, 90vw);
  padding: 2.2rem 2rem;
  background: var(--panel);
  border: 1px solid var(--panel-border);
  border-radius: var(--radius);
}
.login-card .brand { justify-content: center; margin-bottom: 1.2rem; }
.login-sub { color: var(--text-faint); font-size: 0.82rem; text-align: center; margin: 0 0 1.4rem; }
#login-form { display: flex; flex-direction: column; gap: 0.7rem; }
#login-password {
  background: #0d1013;
  border: 1px solid var(--panel-border);
  color: var(--text);
  padding: 0.65rem 0.75rem;
  border-radius: var(--radius);
  font-family: var(--mono);
  font-size: 0.9rem;
}
#login-password:focus { outline: 2px solid var(--amber-dim); outline-offset: 1px; }
#login-form button {
  background: var(--amber);
  color: #1a1200;
  border: none;
  padding: 0.65rem;
  border-radius: var(--radius);
  font-weight: 600;
  letter-spacing: 0.03em;
}
.error-text { color: var(--red); font-size: 0.8rem; margin-top: 0.8rem; text-align: center; }

/* ---------- Topbar ---------- */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.5rem;
  border-bottom: 1px solid var(--panel-border);
}
.topbar-actions { display: flex; gap: 0.5rem; }
.ghost-btn {
  background: transparent;
  border: 1px solid var(--panel-border);
  color: var(--text-dim);
  padding: 0.4rem 0.8rem;
  border-radius: var(--radius);
  font-size: 0.78rem;
}
.ghost-btn:hover { border-color: var(--amber-dim); color: var(--amber); }

/* ---------- Grid layout ---------- */
.grid {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 1rem;
  padding: 1.5rem;
  max-width: 1200px;
  margin: 0 auto;
}
.hero { grid-column: 1 / -1; }
.dimensions { grid-column: 2; grid-row: 2; }
.log-update { grid-column: 1; grid-row: 2; }
.recent-events { grid-column: 1 / -1; }

@media (max-width: 860px) {
  .grid { grid-template-columns: 1fr; }
  .dimensions, .log-update { grid-column: 1; }
}

.panel {
  background: var(--panel);
  border: 1px solid var(--panel-border);
  border-radius: var(--radius);
  padding: 1.2rem 1.4rem;
}
.panel h2 {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-faint);
  margin: 0 0 0.9rem;
}

/* ---------- Hero ---------- */
.hero-label {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  color: var(--text-faint);
}
.hero-number-row { display: flex; align-items: baseline; gap: 0.9rem; margin: 0.3rem 0 0.8rem; }
.hero-number {
  font-family: var(--mono);
  font-size: 3.2rem;
  font-weight: 600;
  color: var(--amber);
  text-shadow: 0 0 24px rgba(255,176,32,0.25);
  letter-spacing: -0.02em;
}
.hero-change { font-family: var(--mono); font-size: 1rem; color: var(--text-dim); }
.hero-change.up { color: var(--green); }
.hero-change.down { color: var(--red); }

.range-tabs { display: flex; gap: 0.4rem; margin-bottom: 0.6rem; }
.range-tabs button {
  background: transparent;
  border: 1px solid var(--panel-border);
  color: var(--text-faint);
  font-family: var(--mono);
  font-size: 0.7rem;
  padding: 0.25rem 0.6rem;
  border-radius: var(--radius);
}
.range-tabs button.active { color: var(--amber); border-color: var(--amber-dim); }

.chart-wrap { position: relative; }

.hero-footer {
  display: flex;
  justify-content: space-between;
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--text-faint);
  margin-top: 0.6rem;
}

/* ---------- Dimensions ---------- */
.dimension-list { display: flex; flex-direction: column; gap: 0.7rem; }
.dim-row { display: grid; grid-template-columns: 1fr auto; gap: 0.2rem 0.6rem; align-items: center; }
.dim-name { font-size: 0.78rem; color: var(--text-dim); }
.dim-value { font-family: var(--mono); font-size: 0.78rem; color: var(--text); }
.dim-bar-track { grid-column: 1 / -1; height: 5px; background: #1c2126; border-radius: 3px; overflow: hidden; }
.dim-bar-fill { height: 100%; background: linear-gradient(90deg, var(--amber-dim), var(--amber)); }

/* ---------- Log update ---------- */
.mode-toggle { display: flex; gap: 0.4rem; margin-bottom: 0.9rem; }
.mode-btn {
  flex: 1;
  background: #0d1013;
  border: 1px solid var(--panel-border);
  color: var(--text-faint);
  padding: 0.5rem;
  border-radius: var(--radius);
  font-size: 0.78rem;
}
.mode-btn.active { color: var(--amber); border-color: var(--amber-dim); }

textarea, select {
  width: 100%;
  background: #0d1013;
  border: 1px solid var(--panel-border);
  color: var(--text);
  padding: 0.6rem 0.7rem;
  border-radius: var(--radius);
  font-family: var(--sans);
  font-size: 0.85rem;
  resize: vertical;
}
textarea:focus, select:focus { outline: 2px solid var(--amber-dim); outline-offset: 1px; }

.row-actions { display: flex; align-items: center; gap: 0.8rem; margin-top: 0.7rem; }
.primary-btn {
  background: var(--amber);
  color: #1a1200;
  border: none;
  padding: 0.55rem 1.1rem;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 0.82rem;
}
.primary-btn:disabled { opacity: 0.5; cursor: default; }
.status-text { font-size: 0.76rem; color: var(--text-faint); font-family: var(--mono); }

.manual-form { display: flex; flex-direction: column; gap: 0.7rem; }
.manual-form label { font-size: 0.72rem; color: var(--text-faint); display: flex; flex-direction: column; gap: 0.3rem; }
.slider-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0.6rem 1rem; }
.slider-grid label { flex-direction: row; align-items: center; justify-content: space-between; font-size: 0.7rem; }
.slider-grid input[type="range"] { flex: 1; margin: 0 0.5rem; accent-color: var(--amber); }
.slider-grid span { font-family: var(--mono); color: var(--text-dim); width: 2.4em; text-align: right; }

.manual-batch { display: flex; flex-direction: column; gap: 0.3rem; margin-top: 0.5rem; }
.batch-item {
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--text-dim);
  background: #0d1013;
  border: 1px solid var(--panel-border);
  border-radius: var(--radius);
  padding: 0.35rem 0.6rem;
  display: flex;
  justify-content: space-between;
}
.batch-item button { background: none; border: none; color: var(--red); font-size: 0.75rem; }

/* ---------- Recent events ---------- */
.events-list { display: flex; flex-direction: column; gap: 0.5rem; max-height: 360px; overflow-y: auto; }
.event-row {
  display: grid;
  grid-template-columns: 90px 100px 1fr 60px;
  gap: 0.8rem;
  align-items: center;
  font-size: 0.78rem;
  padding: 0.5rem 0.6rem;
  border: 1px solid var(--panel-border);
  border-radius: var(--radius);
}
.event-row .ev-dim { font-family: var(--mono); color: var(--amber); font-size: 0.72rem; }
.event-row .ev-type { font-family: var(--mono); font-size: 0.7rem; color: var(--text-faint); text-transform: uppercase; }
.event-row .ev-explanation { color: var(--text-dim); }
.event-row .ev-credit { font-family: var(--mono); text-align: right; }
.event-row .ev-credit.pos { color: var(--green); }
.event-row .ev-credit.neg { color: var(--red); }
.event-row.superseded { opacity: 0.4; text-decoration: line-through; }

@media (max-width: 600px) {
  .event-row { grid-template-columns: 1fr; gap: 0.2rem; }
}