:root {
  --bg: #020617;
  --bg-card: #020617;
  --fg: #e5e7eb;
  --fg-muted: #9ca3af;
  --accent: #0ea5e9;
  --danger: #ef4444;
  --radius-card: 18px;
}

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

body {
  margin: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: radial-gradient(circle at top, #0f172a 0, #020617 60%);
  color: var(--fg);
}

a { color: inherit; text-decoration: none; }

.pt-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 20px;
  border-bottom: 1px solid rgba(148,163,184,0.35);
  background: rgba(15,23,42,0.9);
  backdrop-filter: blur(10px);
  position: sticky;
  top: 0;
  z-index: 20;
}

.pt-header .logo {
  width: 40px;
  height: 40px;
  border-radius: 999px;
  border: 2px solid rgba(56,189,248,0.7);
  box-shadow: 0 0 18px rgba(56,189,248,0.5);
}

.pt-header .titling h1 {
  margin: 0;
  font-size: 1.4rem;
}

.pt-header .titling .muted { font-size: 0.8rem; }

.pt-nav {
  display: flex;
  align-items: center;
  gap: 8px;
}

.pt-nav a {
  font-size: 0.85rem;
  padding: 6px 12px;
  border-radius: 999px;
  border: 1px solid rgba(148,163,184,0.5);
}

.pt-nav a:hover { background: rgba(148,163,184,0.12); }

/* ✅ Mobile header fix */
@media (max-width: 700px) {
  .pt-header {
    flex-wrap: wrap;
    gap: 10px;
    justify-content: center;
    text-align: center;
  }

  .pt-header .logo {
    flex: 0 0 auto;
  }

  .pt-header .titling {
    flex: 1 1 100%;
  }

  .pt-header .titling h1 {
    white-space: nowrap;
  }

  .pt-header .titling .muted {
    max-width: 42ch;
    margin: 0 auto;
  }

  .pt-nav {
    flex: 1 1 100%;
    justify-content: center;
    flex-wrap: wrap;
    gap: 8px;
  }
}

.container {
  max-width: 1200px;
  margin: 18px auto 40px;
  padding: 0 16px;
}

.grid { display: grid; gap: 18px; }

.grid-2 { grid-template-columns: minmax(0,1.1fr) minmax(0,0.9fr); }

@media (max-width: 900px) {
  .grid-2 { grid-template-columns: minmax(0,1fr); }
}

.card {
  background: radial-gradient(circle at top left, rgba(15,23,42,0.95), rgba(15,23,42,0.99));
  border-radius: var(--radius-card);
  padding: 14px 16px 16px;
  border: 1px solid rgba(51,65,85,0.9);
  box-shadow: 0 18px 40px rgba(15,23,42,0.9), 0 0 0 1px rgba(15,23,42,0.9);
}

.card.full-width { grid-column: 1 / -1; }

.card-header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 8px;
}

.card h2 {
  margin: 0 0 4px;
  font-size: 1.1rem;
}

.card-body { margin-top: 4px; }

.muted { color: var(--fg-muted); }
.hint { font-size: 0.85rem; }

.field { margin-bottom: 10px; }

.field label {
  display: block;
  font-size: 0.8rem;
  margin-bottom: 4px;
}

.field input,
.field select {
  width: 100%;
  padding: 6px 8px;
  border-radius: 10px;
  border: 1px solid rgba(75,85,99,0.9);
  background: rgba(15,23,42,0.95);
  color: var(--fg);
}

.field input:focus,
.field select:focus {
  outline: 1px solid var(--accent);
  border-color: var(--accent);
}

.field.dual { display: flex; gap: 8px; }
.field.dual > div { flex: 1 1 0; }

.row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 6px;
}

.row-wrap {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
}

/* ✅ Scanner controls styling */
.live-controls,
.photo-controls {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
}

/* ✅ Phones: hide live camera controls; show photo controls */
@media (max-width: 900px) {
  .live-controls { display: none; }
}

button,
.btn {
  border-radius: 999px;
  border: none;
  padding: 6px 12px;
  background: var(--accent);
  color: #0b1120;
  font-weight: 500;
  font-size: 0.85rem;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
}

button:disabled,
.btn:disabled { opacity: 0.45; cursor: default; }

button:hover:not(:disabled),
.btn:hover:not(:disabled) { filter: brightness(1.08); }

.btn-ghost {
  padding: 6px 12px;
  border-radius: 999px;
  border: 1px solid rgba(148,163,184,0.6);
  background: transparent;
  color: var(--fg);
  font-size: 0.8rem;
  cursor: pointer;
}

.btn-ghost:hover { background: rgba(148,163,184,0.1); }

.btn-ghost.danger {
  border-color: rgba(239,68,68,0.7);
  color: #fecaca;
}

.btn-ghost.danger:hover { background: rgba(239,68,68,0.15); }

/* Scan view + alignment frame */
.scan-view {
  position: relative;
  width: 100%;
  max-width: 480px;
  margin: 0 auto;
  border-radius: 10px;
  overflow: hidden;
  background: #020617;
}

/* Video defines camera box with a stable aspect */
.scan-view video {
  display: block;
  width: 100%;
  max-height: 320px;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: 10px;
}

/* Canvas overlays the video, same box */
.scan-view canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border-radius: 10px;
  display: block;
  background: transparent;
}

.scan-view canvas[hidden] { display: none; }

/* Alignment frame */
.scan-frame {
  position: absolute;
  inset: 8% 0 8% 0;
  pointer-events: none;
  display: flex;
  justify-content: center;
}

.scan-frame::before {
  content: "";
  display: block;
  width: 22%;
  border-radius: 10px;
  border: 2px dashed rgba(248,250,252,0.8);
  box-shadow: 0 0 0 1px rgba(15,23,42,0.9);
}

.scan-frame-label {
  position: absolute;
  bottom: 10%;
  font-size: 0.75rem;
  padding: 2px 8px;
  border-radius: 999px;
  background: rgba(15,23,42,0.9);
  color: #e5e7eb;
}

/* Bars & tags */
.bars h3 { margin: 10px 0 2px; font-size: 0.9rem; }

.bar {
  height: 6px;
  border-radius: 999px;
  background: rgba(30,41,59,0.9);
  overflow: hidden;
}

.bar span {
  display: block;
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, #0ea5e9, #22c55e);
  transition: width 0.4s ease-out;
}

.tag {
  font-size: 0.7rem;
  padding: 3px 8px;
  border-radius: 999px;
  border: 1px solid rgba(148,163,184,0.5);
  background: rgba(15,23,42,0.9);
}

.tag.ok { border-color: rgba(34,197,94,0.7); color: #bbf7d0; }
.tag.warn { border-color: rgba(249,115,22,0.7); color: #fed7aa; }
.tag.bad { border-color: rgba(239,68,68,0.75); color: #fecaca; }

/* History grid */
.history-grid {
  display: grid;
  gap: 12px;
  grid-template-columns: repeat(2, minmax(0,1fr));
}

.history-grid canvas { width: 100%; max-height: 200px; }

@media (max-width: 700px) {
  .history-grid { grid-template-columns: minmax(0,1fr); }
}

/* When pool setup is hidden, make scanner full-width */
.pooltest--pool-hidden { grid-template-columns: minmax(0,1fr); }
.pooltest--pool-hidden [data-pt="poolCard"] { display: none; }

.pt-footer {
  max-width: 1200px;
  margin: 0 auto 24px;
  padding: 0 16px;
  font-size: 0.75rem;
}