/* PipShed — mobile-first light theme */
:root {
  --bg: #ffffff;
  --text: #212121;
  --accent: #4caf50;
  --muted: #757575;
  --border: #e0e0e0;
  --stripe-neutral: #f5f5f5;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 15px;
  line-height: 1.4;
  padding-bottom: env(safe-area-inset-bottom, 12px);
}

.topbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  background: var(--bg);
  z-index: 20;
}

.brand {
  font-weight: 700;
  color: var(--accent);
  font-size: 1.1rem;
}

.instrument-select {
  flex: 1;
  min-width: 120px;
  max-width: 200px;
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg);
  color: var(--text);
}

.tf-group {
  display: flex;
  gap: 4px;
}

.tf-btn {
  padding: 8px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg);
  color: var(--text);
  cursor: pointer;
  font-size: 13px;
}

.tf-btn.active {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

.main {
  padding: 12px;
  max-width: 720px;
  margin: 0 auto;
}

.error-banner {
  background: #ffebee;
  color: #b71c1c;
  padding: 10px 12px;
  border-radius: 8px;
  margin-bottom: 10px;
  font-size: 14px;
}

.chart-wrapper {
  position: relative;
  width: 100%;
  min-height: 200px;
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
  background: #fafafa;
}

.chart-img {
  display: block;
  width: 100%;
  height: auto;
  vertical-align: top;
}

.chart-placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 200px;
  color: var(--muted);
}

.spinner {
  width: 28px;
  height: 28px;
  border: 3px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.tooltip {
  position: absolute;
  z-index: 15;
  max-width: 220px;
  padding: 8px 10px;
  background: var(--text);
  color: #fff;
  border-radius: 6px;
  font-size: 12px;
  pointer-events: none;
}

.equity-card {
  margin-top: 10px;
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
}

.equity-img {
  display: block;
  width: 100%;
  height: auto;
}

.window-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 12px;
  gap: 8px;
}

.window-label {
  font-size: 14px;
  color: var(--text);
}

.window-btns {
  display: flex;
  gap: 6px;
}

.win-btn {
  padding: 8px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg);
  cursor: pointer;
}

.size-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  margin-top: 10px;
}

.size-label {
  font-size: 13px;
  color: var(--muted);
  margin-right: 4px;
}

.size-btn {
  padding: 6px 10px;
  font-size: 12px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--bg);
  cursor: pointer;
}

.size-btn.active {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

.gear-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 10px;
  font-size: 13px;
  align-items: center;
}

.notional-label input {
  width: 100px;
  margin-left: 6px;
  padding: 6px 8px;
  border: 1px solid var(--border);
  border-radius: 6px;
}

.main-tabs {
  display: flex;
  margin-top: 16px;
  border-bottom: 2px solid var(--border);
  gap: 0;
}

.main-tab {
  flex: 1;
  padding: 12px 8px;
  border: none;
  background: transparent;
  color: var(--muted);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  border-bottom: 3px solid transparent;
  margin-bottom: -2px;
}

.main-tab.active {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

.tab-panel {
  display: none;
  padding-top: 12px;
}

.tab-panel.active {
  display: block;
}

.panel-hint {
  font-size: 13px;
  color: var(--muted);
  margin: 0 0 12px;
}

.pill-section {
  margin-bottom: 14px;
}

.pill-section-title {
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--muted);
  margin-bottom: 6px;
}

.pill-row {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.pill {
  display: inline-flex;
  align-items: center;
  padding: 8px 12px;
  border-radius: 999px;
  font-size: 13px;
  border: 1px solid transparent;
  cursor: pointer;
  background: #eee;
  color: var(--text);
}

.pill--regime {
  background: #e6f1fb;
  color: #0c447c;
  border-color: #85b7eb;
}

.pill--signal {
  background: #eaf3de;
  color: #27500a;
  border-color: #97c459;
}

.pill--both {
  background: #faeeda;
  color: #633806;
  border-color: #ef9f27;
}

.pill.active {
  background: var(--accent) !important;
  color: #fff !important;
  border-color: var(--accent) !important;
}

.pill--disabled,
.pill.pill--disabled {
  opacity: 0.25;
  pointer-events: none;
}

.pill-tray-label {
  font-size: 13px;
  color: var(--muted);
  margin: 8px 0 6px;
}

.signal-graph {
  border: 1px solid var(--border);
  border-radius: 8px;
  min-height: 200px;
  margin-bottom: 8px;
  background: var(--stripe-neutral);
  overflow: auto;
}

.signal-tree-layers {
  position: relative;
  min-height: 24px;
  border-bottom: 1px solid var(--border);
  background: var(--bg);
}

.signal-tree-layer-label {
  position: absolute;
  top: 4px;
  font-size: 10px;
  color: var(--muted);
  text-transform: uppercase;
}

#signal-tree-canvas {
  position: relative;
  min-height: 120px;
  padding: 8px;
}

.signal-tree-canvas-inner {
  position: relative;
}

.tree-node {
  position: absolute;
  width: 100px;
  min-height: 56px;
  border-radius: 8px;
  padding: 4px 22px 4px 6px;
  cursor: pointer;
  box-shadow: 0 1px 3px rgba(0,0,0,0.08);
  border-left: 3px solid rgba(0,0,0,0.15);
}

.tree-node--active {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.tree-node-pills {
  font-size: 10px;
  line-height: 1.2;
  max-height: 36px;
  overflow: hidden;
}

.tree-node-address {
  font-size: 9px;
  opacity: 0.85;
  display: block;
  margin-top: 2px;
}

.tree-node-btn {
  position: absolute;
  width: 20px;
  height: 20px;
  padding: 0;
  font-size: 14px;
  line-height: 1;
  border: none;
  border-radius: 4px;
  background: rgba(0,0,0,0.12);
  cursor: pointer;
  color: inherit;
}

.tree-node-btn--right { right: 2px; top: 18px; }
.tree-node-btn--bottom { right: 18px; bottom: 2px; }

.tree-node-delete {
  position: absolute;
  top: 2px;
  right: 2px;
  width: 18px;
  height: 18px;
  padding: 0;
  font-size: 12px;
  border: none;
  border-radius: 4px;
  background: rgba(0,0,0,0.15);
  cursor: pointer;
  color: inherit;
}

.tree-connector { z-index: 0; }
.tree-rel-label {
  font-size: 9px;
  padding: 1px 4px;
  border-radius: 3px;
  font-weight: 600;
}
.tree-or-badge {
  font-size: 9px;
  font-weight: 700;
  color: var(--muted);
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 1px 4px;
}

.node-sheet {
  position: fixed;
  left: 50%;
  bottom: 12px;
  transform: translateX(-50%);
  width: min(360px, 94vw);
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  box-shadow: 0 8px 32px rgba(0,0,0,0.12);
  z-index: 100;
  padding: 12px;
}

.node-sheet__header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 10px;
}

.node-sheet__title { font-weight: 700; font-size: 14px; }
.node-sheet__close {
  border: none;
  background: transparent;
  font-size: 18px;
  cursor: pointer;
}

.node-sheet__row { margin-bottom: 10px; }
.node-sheet__label { display: block; font-size: 12px; color: var(--muted); margin-bottom: 4px; }

.node-sheet__toggle {
  display: flex;
  gap: 6px;
}
.node-sheet__toggle--disabled,
.node-sheet__stepper--disabled {
  opacity: 0.35;
  pointer-events: none;
}

.node-sheet__rel-btn {
  flex: 1;
  padding: 8px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg);
  cursor: pointer;
}
.node-sheet__rel-btn.active {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

.node-sheet__stepper {
  display: flex;
  align-items: center;
  gap: 12px;
}
.node-sheet__step-btn {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--bg);
  cursor: pointer;
  font-size: 18px;
}

.tree-delete-confirm {
  position: absolute;
  z-index: 50;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px;
  box-shadow: 0 4px 16px rgba(0,0,0,0.1);
  max-width: 200px;
}
.tree-delete-confirm__btns {
  display: flex;
  gap: 8px;
  margin-top: 8px;
  justify-content: flex-end;
}

.results-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.result-card {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px;
  background: #fafafa;
}

.result-label {
  display: block;
  font-size: 12px;
  color: var(--muted);
  margin-bottom: 4px;
}

.result-value {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text);
}

.results-note {
  font-size: 12px;
  color: var(--muted);
  margin-top: 12px;
}

.footer {
  text-align: center;
  padding: 16px;
  font-size: 11px;
  color: var(--muted);
  border-top: 1px solid var(--border);
}

.muted { opacity: 0.8; }