/* base.css — structure only, zero color/font opinions */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html, body {
  height: 100%;
  background: var(--panel-bg);
  color: var(--text-primary);
  font-family: var(--font-label);
  font-size: 16px;
  overflow-x: hidden;
}

/* ── background effect layer ── */
#bg-effect {
  position: fixed; inset: 0; pointer-events: none; z-index: 0;
  opacity: var(--bg-effect-opacity, 0.08);
}

/* ── page layout ── */
#page {
  position: relative; z-index: 1;
  max-width: 100%;
  padding: 1rem 1.5rem 3rem;
  display: flex; flex-direction: column; gap: 1.5rem;
}

/* ── panel header ── */
#panel-header {
  display: flex; align-items: center; justify-content: space-between;
  padding-bottom: 0.75rem;
  border-bottom: var(--border-width) var(--border-style) var(--accent-primary);
}
#panel-title {
  font-family: var(--font-display);
  font-size: 1.8rem;
  letter-spacing: var(--letter-spacing-display);
  text-transform: var(--text-transform-label);
  color: var(--accent-primary);
}
#panel-subtitle { font-size: 1rem; color: var(--text-dim); margin-top: 0.2rem; }
#theme-switcher {
  display: flex; gap: 0.5rem; align-items: center;
  font-size: 1rem; color: var(--text-dim); font-family: var(--font-mono);
}
#theme-switcher button {
  background: transparent;
  border: var(--border-width) var(--border-style) var(--accent-primary);
  color: var(--accent-primary);
  font-family: var(--font-mono); font-size: 0.95rem;
  padding: 0.2rem 0.5rem; cursor: pointer;
  border-radius: var(--radius-btn);
  transition: background 0.15s, color 0.15s;
}
#theme-switcher button:hover, #theme-switcher button.active {
  background: var(--accent-primary); color: var(--panel-bg);
}

/* ── blinken section ── */
#blinken-section { display: flex; flex-direction: row; gap: 0.75rem; align-items: stretch; }
.blinken-rack {
  flex: 1 1 0;
  border: var(--border-width) var(--border-style) var(--accent-primary);
  border-radius: var(--radius-card);
  padding: 0.6rem 1rem 0.8rem;
  background: var(--panel-surface);
  position: relative;
  overflow-x: auto;
}
.blinken-rack-label {
  font-family: var(--font-display);
  font-size: 0.95rem;
  letter-spacing: var(--letter-spacing-label);
  text-transform: var(--text-transform-label);
  color: var(--accent-primary);
  margin-bottom: 0.6rem;
}
.blinken-row {
  display: flex; gap: 0.4rem; align-items: center; flex-wrap: nowrap;
}
.blinken-led {
  width: var(--led-size); height: var(--led-size);
  background: var(--blinken-idle);
  border-radius: var(--radius-led);
  transition: background var(--blink-decay) var(--blink-curve),
              box-shadow var(--blink-decay) var(--blink-curve);
  flex-shrink: 0;
  cursor: default;
}
.blinken-led.on {
  background: var(--blinken-active);
  box-shadow: var(--blinken-glow);
}
.blinken-labels {
  display: flex; gap: 0.4rem; margin-top: 0.3rem;
}
.blinken-label {
  width: var(--led-size); text-align: center;
  font-family: var(--font-mono); font-size: 0.75rem;
  color: var(--text-dim); flex-shrink: 0;
  overflow: hidden; text-overflow: clip;
}

/* ── instrument grid ── */
#instruments-grid {
  flex: 1 1 0;
  min-width: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  align-items: flex-start;
}
.section-divider {
  grid-column: 1 / -1;
  font-family: var(--font-display);
  font-size: 0.95rem;
  letter-spacing: var(--letter-spacing-label);
  text-transform: var(--text-transform-label);
  color: var(--text-dim);
  border-bottom: var(--border-width) var(--border-style) var(--panel-border);
  padding-bottom: 0.3rem;
  margin-top: 0.5rem;
}

/* ── instrument cards ── */
.card {
  flex: 0 0 auto;
  background: var(--panel-surface);
  border: var(--border-width) var(--border-style) var(--panel-border);
  border-radius: var(--radius-card);
  padding: 0.75rem;
  display: flex; flex-direction: column; align-items: center; gap: 0.5rem;
  position: relative;
  transition: border-color 0.2s;
}
.card:hover { border-color: var(--accent-primary); }
.card-label {
  font-family: var(--font-mono); font-size: 0.9rem;
  letter-spacing: var(--letter-spacing-label);
  text-transform: var(--text-transform-label);
  color: var(--text-dim); text-align: center;
  max-width: 100%; overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}

/* ── lamp ── */
.lamp-bulb {
  width: var(--lamp-size); height: var(--lamp-size);
  border-radius: var(--radius-lamp);
  background: var(--lamp-off);
  border: var(--border-width) var(--border-style) var(--panel-border);
  transition: background 0.2s, box-shadow 0.2s;
}
.lamp-bulb.on-green  { background: var(--lamp-on-green);  box-shadow: var(--lamp-glow-green); }
.lamp-bulb.on-red    { background: var(--lamp-on-red);    box-shadow: var(--lamp-glow-red); }
.lamp-bulb.on-amber  { background: var(--lamp-on-amber);  box-shadow: var(--lamp-glow-amber); }
.lamp-bulb.on-blue   { background: var(--lamp-on-blue);   box-shadow: var(--lamp-glow-blue); }

/* ── gauge ── */
.gauge-wrap { position: relative; width: 100px; height: 60px; }
.gauge-svg { width: 100%; height: 100%; }

/* ── knob ── */
.knob-wrap {
  width: 60px; height: 60px; border-radius: 50%;
  background: var(--panel-border);
  border: 2px solid var(--accent-primary);
  position: relative; cursor: pointer;
  display: flex; align-items: center; justify-content: center;
}
.knob-indicator {
  width: 4px; height: 22px; background: var(--accent-primary);
  border-radius: 2px; transform-origin: center bottom;
  position: absolute; bottom: 50%; left: calc(50% - 2px);
}
.knob-value {
  font-family: var(--font-mono); font-size: 0.95rem; color: var(--accent-primary);
}

/* ── toggle switch ── */
.switch-body {
  width: 36px; height: 64px;
  background: var(--panel-border);
  border-radius: 18px;
  border: 2px solid var(--accent-primary);
  position: relative; cursor: pointer;
  transition: border-color 0.2s;
}
.switch-lever {
  width: 26px; height: 26px; border-radius: 50%;
  background: var(--accent-primary);
  position: absolute; left: 3px;
  transition: top 0.2s ease;
  box-shadow: 0 0 6px var(--accent-primary);
}
.switch-body.up .switch-lever   { top: 4px; }
.switch-body.down .switch-lever { top: 30px; }
.switch-body.up { border-color: var(--lamp-on-green); }
.switch-body.down { border-color: var(--text-dim); }

/* ── ticker tape ── */
/* ── main content row: ticker sidebar + instrument grid ── */
#main-content {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
}

#ticker-section {
  flex: 0 0 480px;
  border: var(--border-width) var(--border-style) var(--panel-border);
  border-radius: var(--radius-card);
  background: var(--panel-surface);
  padding: 0.5rem 0.75rem;
  min-height: 200px;
  max-height: calc(100vh - 260px);
  overflow-y: auto;
  resize: vertical;
  position: sticky;
  top: 1rem;
}
#ticker-label {
  font-family: var(--font-ticker, var(--font-display)); font-size: 0.9rem;
  letter-spacing: var(--letter-spacing-label);
  text-transform: var(--text-transform-label);
  color: var(--text-dim); margin-bottom: 0.3rem;
}
.ticker-entry {
  font-family: var(--font-ticker, var(--font-mono)); font-size: 1rem; line-height: 1.7;
  color: var(--text-primary); line-height: 1.6;
  border-bottom: 1px solid var(--panel-border);
  padding: 0.1rem 0;
  display: flex; gap: 0.75rem;
}
.ticker-ts { color: var(--text-dim); flex-shrink: 0; font-style: italic; }
.ticker-msg { color: var(--text-primary); }
.ticker-entry.new { animation: ticker-flash 0.4s ease-out; }
@keyframes ticker-flash {
  0%   { color: var(--accent-primary); }
  100% { color: var(--text-primary); }
}

/* ── knife switch ── */
.knife-svg { width: 100px; max-width: 100%; cursor: pointer; }
.knife-blade-g {
  transform-box: view-box;
  transform-origin: 20px 75px;
  transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}
.knife-blade-g.open   { transform: rotate(-60deg); }
.knife-blade-g.closed { transform: rotate(0deg); }
.knife-spark.flash {
  transform-box: view-box;
  transform-origin: 75px 30px;
  animation: knife-spark-flash 0.4s ease-out forwards;
}
@keyframes knife-spark-flash {
  0%   { opacity: 0.9; transform: scale(0.3); }
  35%  { opacity: 0.7; transform: scale(1.2); }
  100% { opacity: 0;   transform: scale(2.8); }
}

/* ── tesla coil ── */
.coil-canvas { display: block; cursor: default; }
.card[data-kind="coil"]  { overflow: visible; min-width: 160px; }
.card[data-kind="knife"] { min-width: 130px; }


/* ── metrics bar ── */
#metrics-bar {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr 1fr;
  gap: 1rem;
  background: var(--panel-surface);
  border: var(--border-width) var(--border-style) var(--accent-primary);
  border-radius: var(--radius-card);
  padding: 0.6rem 1.2rem;
}
.metric-block {
  display: flex; flex-direction: column; gap: 0.25rem;
}
.metric-title {
  font-family: var(--font-display);
  font-size: 0.9rem;
  letter-spacing: var(--letter-spacing-label);
  text-transform: var(--text-transform-label);
  color: var(--text-dim);
}
.metric-readout {
  display: flex; align-items: baseline; gap: 0.5rem;
}
.metric-value-big {
  font-family: var(--font-mono);
  font-size: 1.8rem;
  font-weight: bold;
  color: var(--accent-primary);
  line-height: 1;
  transition: color 0.4s;
  min-width: 3.5ch;
}
.metric-value-big.warn { color: var(--lamp-on-amber, #C8960C); }
.metric-value-big.crit { color: var(--lamp-on-red, #ff4040); }
.metric-unit {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  color: var(--text-dim);
}
.metric-bar-track {
  height: 5px;
  background: var(--panel-border);
  border-radius: 2px;
  overflow: hidden;
  margin-top: 2px;
}
.metric-bar-fill {
  height: 100%;
  background: var(--accent-primary);
  border-radius: 2px;
  transition: width 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94),
              background 0.4s;
  width: 0%;
}
.metric-bar-fill.warn { background: var(--lamp-on-amber, #C8960C); }
.metric-bar-fill.crit { background: var(--lamp-on-red, #ff4040); }
.metric-delta {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--text-dim);
}
.metric-delta.up   { color: var(--lamp-on-amber, #C8960C); }
.metric-delta.down { color: var(--lamp-on-green, #44cc44); }

/* velocity sparkline canvas */
#vel-sparkline {
  width: 100%; height: 28px;
  display: block;
  opacity: 0.7;
}

/* ── milestone flash banner ── */
#milestone-flash {
  position: fixed;
  top: -80px;
  left: 0; right: 0;
  padding: 14px 24px;
  text-align: center;
  z-index: 9999;
  transition: top 0.35s cubic-bezier(0.34, 1.1, 0.64, 1);
  font-family: var(--font-display);
  font-size: 1.1em;
  letter-spacing: 0.12em;
  border-bottom: 3px solid;
  text-shadow: 0 0 8px currentColor;
}
#milestone-flash.active { top: 0; }
#milestone-flash[data-color="red"]   { background: rgba(160,20,20,0.95); border-color: #ff4444; color: #ffd0d0; }
#milestone-flash[data-color="green"] { background: rgba(10,100,10,0.95);  border-color: #44ff88; color: #d0ffd8; }
#milestone-flash[data-color="amber"] { background: rgba(120,70,0,0.95);   border-color: #C8960C; color: #ffeaa0; }
#milestone-flash[data-color="blue"]  { background: rgba(0,50,150,0.95);   border-color: #00e5ff; color: #c0f0ff; }
.ticker-entry.milestone { border-left: 3px solid var(--accent-primary); padding-left: 6px; }

/* ── section boxes ── */
.section-box {
  flex: 1 1 auto;
  min-width: 180px;
  border: var(--border-width) var(--border-style) var(--panel-border);
  border-radius: var(--radius-card);
  background: var(--panel-surface);
  padding: 0.75rem;
  margin-top: 10px;
}
.section-box-title {
  font-family: var(--font-display);
  font-size: 0.9rem;
  letter-spacing: var(--letter-spacing-label);
  text-transform: var(--text-transform-label);
  color: var(--accent-primary);
  border-bottom: var(--border-width) var(--border-style) var(--panel-border);
  padding-bottom: 0.4rem;
  margin-bottom: 0.75rem;
}
.section-box-cards {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}