:root {
  --bg1: #2b0e1c;
  --bg2: #5c1030;
  --bg3: #170a11;
  --accent: #8a1538;
  --accent2: #c23a5e;
  --offer: #3ddc84;
  --offer2: #0ea968;
  --success: #29d98c;
  --text: #ffffff;
  --muted: #d9b8c4;
  --card: rgba(255, 255, 255, 0.08);
  --card-border: rgba(255, 255, 255, 0.16);
  font-family: 'Segoe UI', 'Poppins', Tahoma, Arial, sans-serif;
}

* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }

html, body {
  height: 100%;
  margin: 0;
  overscroll-behavior: none;
}

body {
  min-height: 100vh;
  color: var(--text);
  background:
    radial-gradient(1200px 800px at 15% -10%, color-mix(in srgb, var(--accent2) 32%, transparent), transparent 60%),
    radial-gradient(1000px 700px at 110% 10%, color-mix(in srgb, var(--accent) 40%, transparent), transparent 55%),
    linear-gradient(135deg, var(--bg1), var(--bg2) 55%, var(--bg3));
  display: flex;
  flex-direction: column;
  overflow: hidden;
  user-select: none;
}

/* ---------- Branch identity bar (always visible, permanent) ---------- */

.branch-bar {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 16px 20px 14px;
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.4px;
  color: var(--text);
  background: rgba(0, 0, 0, 0.22);
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
  backdrop-filter: blur(6px);
  flex-shrink: 0;
}

.branch-logo {
  height: 40px;
  width: auto;
  max-width: 140px;
  object-fit: contain;
}

.branch-bar-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--success);
  box-shadow: 0 0 0 4px rgba(41, 217, 140, 0.25);
  animation: pulse-dot 2s infinite;
}

@keyframes pulse-dot {
  0%, 100% { box-shadow: 0 0 0 4px rgba(41, 217, 140, 0.25); }
  50% { box-shadow: 0 0 0 8px rgba(41, 217, 140, 0.1); }
}

.fullscreen-btn {
  position: fixed;
  top: 12px;
  right: 14px;
  z-index: 50;
  width: 40px;
  height: 40px;
  border-radius: 10px;
  border: 1px solid var(--card-border);
  background: var(--card);
  color: var(--text);
  font-size: 18px;
  cursor: pointer;
}

.stage {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  position: relative;
}

.screen {
  width: 100%;
  max-width: 720px;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.hidden { display: none !important; }

/* ---------- Scan screen ---------- */

.scanner-graphic {
  width: min(70vw, 320px);
  margin-bottom: 12px;
  filter: drop-shadow(0 10px 30px color-mix(in srgb, var(--accent2) 45%, transparent));
}

.scanner-svg { width: 100%; height: auto; }

#scanLine {
  animation: scan-move 1.8s ease-in-out infinite;
}

@keyframes scan-move {
  0% { transform: translateY(0); opacity: 0.9; }
  50% { transform: translateY(56px); opacity: 0.4; }
  100% { transform: translateY(0); opacity: 0.9; }
}

.scan-title {
  font-size: clamp(34px, 6vw, 56px);
  margin: 8px 0 4px;
  font-weight: 800;
  background: linear-gradient(90deg, #ffffff, color-mix(in srgb, var(--accent2) 45%, white));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.scan-subtitle {
  font-size: clamp(18px, 3vw, 26px);
  color: var(--muted);
  margin: 0 0 18px;
  font-weight: 600;
}

.scan-tip {
  font-size: 15px;
  color: var(--muted);
  opacity: 0.75;
  margin: 0;
}

/* ---------- Result card ---------- */

.result-card {
  width: 100%;
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: 28px;
  padding: 0 0 26px;
  backdrop-filter: blur(10px);
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.35);
  overflow: hidden;
  animation: pop-in 0.28s ease-out;
}

@keyframes pop-in {
  from { transform: scale(0.92); opacity: 0; }
  to { transform: scale(1); opacity: 1; }
}

.result-branch {
  background: linear-gradient(90deg, var(--accent), var(--accent2));
  color: #fff;
  font-weight: 700;
  font-size: 15px;
  letter-spacing: 0.4px;
  padding: 12px 20px;
}

.result-body { padding: 22px 30px 4px; }

.barcode-pill {
  display: inline-block;
  background: rgba(255,255,255,0.12);
  border: 1px solid var(--card-border);
  padding: 5px 16px;
  border-radius: 999px;
  font-size: 14px;
  letter-spacing: 1px;
  color: var(--muted);
  margin-bottom: 12px;
}

.description {
  font-size: clamp(22px, 4vw, 30px);
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 8px;
}

.uom-pill {
  display: block;
  font-size: 13px;
  color: var(--muted);
  margin-bottom: 16px;
}

.offer-badge {
  display: inline-block;
  background: linear-gradient(90deg, var(--offer), var(--offer2));
  color: #ffffff;
  font-size: 14px;
  font-weight: 800;
  padding: 6px 18px;
  border-radius: 999px;
  letter-spacing: 0.5px;
  margin-bottom: 16px;
  box-shadow: 0 8px 24px color-mix(in srgb, var(--offer2) 40%, transparent);
  animation: badge-pulse 1.4s ease-in-out infinite;
}

@keyframes badge-pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.06); }
}

.price-block {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  margin-bottom: 6px;
}

.price-row {
  display: flex;
  align-items: baseline;
  gap: 12px;
  justify-content: center;
}

.price-label {
  font-size: 15px;
  color: var(--muted);
  font-weight: 600;
}

.price-value {
  font-size: 40px;
  font-weight: 800;
}

.regular-price.struck .price-value {
  text-decoration: line-through;
  color: var(--muted);
  font-size: 24px;
  font-weight: 600;
}

.offer-price .price-value {
  background: linear-gradient(90deg, var(--offer), var(--offer2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  font-size: 56px;
}

/* ---------- Countdown ring ---------- */

.countdown-wrap {
  position: relative;
  width: 60px;
  height: 60px;
  margin: 18px auto 0;
}

.countdown-wrap.small { margin-top: 20px; }

.countdown-ring { width: 60px; height: 60px; transform: rotate(-90deg); }

.countdown-ring-bg {
  fill: none;
  stroke: rgba(255,255,255,0.15);
  stroke-width: 5;
}

.countdown-ring-fg {
  fill: none;
  stroke: var(--accent);
  stroke-width: 5;
  stroke-linecap: round;
  stroke-dasharray: 163.36;
  stroke-dashoffset: 0;
}

.countdown-ring-fg.amber { stroke: #ffb85c; }
.countdown-ring-fg.red { stroke: #ff5b6a; }

.countdown-ring-fg.counting {
  animation: countdown-drain 5s linear forwards;
}

@keyframes countdown-drain {
  from { stroke-dashoffset: 0; }
  to { stroke-dashoffset: 163.36; }
}

.countdown-number {
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  font-weight: 700;
}

/* ---------- Message screens (not found / error) ---------- */

.message-card {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: 28px;
  padding: 40px 36px 30px;
  backdrop-filter: blur(10px);
  box-shadow: 0 30px 80px rgba(0,0,0,0.35);
  animation: pop-in 0.28s ease-out;
}

.message-icon {
  font-size: 60px;
  margin-bottom: 8px;
  display: flex;
  justify-content: center;
}

.message-card h2 {
  font-size: clamp(24px, 4vw, 32px);
  margin: 6px 0 10px;
}

.not-found-card h2 { color: #ffb85c; }
.error-card h2 { color: #ff8a92; }

.message-sub {
  font-size: 17px;
  color: var(--text);
  opacity: 0.9;
  margin: 0 0 6px;
}

.message-hint {
  font-size: 14px;
  color: var(--muted);
  margin: 0;
}

.reconnecting-title { color: var(--text); }

.spinner-ring {
  width: 56px;
  height: 56px;
  margin: 0 auto 18px;
  border-radius: 50%;
  border: 5px solid rgba(255, 255, 255, 0.15);
  border-top-color: var(--accent2);
  animation: spin 0.9s linear infinite;
}

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

@media (prefers-reduced-motion: reduce) {
  .spinner-ring { animation: none; border-top-color: var(--accent2); opacity: 0.7; }
}

#barcodeInput {
  position: absolute;
  opacity: 0;
  pointer-events: none;
  width: 1px;
  height: 1px;
}