/* ============================================
   CGC SCAN — industrial utilitarian aesthetic
   Designed for shop-floor phone use:
   - High contrast
   - Big tap targets (min 56px)
   - Legible at arm's length
   - Works in bright/dim light
   ============================================ */

:root {
  --bg: #0a0a0a;
  --bg-elev: #141414;
  --bg-elev-2: #1c1c1c;
  --line: #2a2a2a;
  --line-strong: #3a3a3a;
  --text: #f5f5f0;
  --text-dim: #9a9a92;
  --text-faint: #5a5a52;
  --accent: #ff6b1a;
  --accent-glow: rgba(255, 107, 26, 0.15);
  --ok: #4ade80;
  --warn: #fbbf24;
  --err: #ef4444;
  --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  --sans: "Inter Tight", -apple-system, BlinkMacSystemFont, sans-serif;
}

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

html, body {
  margin: 0;
  padding: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-feature-settings: "ss01", "cv11";
  -webkit-font-smoothing: antialiased;
  overscroll-behavior: none;
}

body {
  background-image:
    radial-gradient(ellipse at top, rgba(255, 107, 26, 0.04) 0%, transparent 50%),
    repeating-linear-gradient(0deg, transparent 0px, transparent 39px, rgba(255, 255, 255, 0.02) 40px);
  display: flex;
  flex-direction: column;
}

/* Subtle scanline for ambiance */
.scanline {
  position: fixed;
  inset: 0;
  pointer-events: none;
  background: repeating-linear-gradient(
    0deg,
    rgba(255, 255, 255, 0.012) 0px,
    rgba(255, 255, 255, 0.012) 1px,
    transparent 1px,
    transparent 3px
  );
  z-index: 1000;
}

/* ============ TOP BAR ============ */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 20px;
  border-bottom: 1px solid var(--line);
  background: var(--bg);
  position: sticky;
  top: 0;
  z-index: 10;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
}

.brand-mark {
  font-size: 24px;
  color: var(--accent);
  line-height: 1;
}

.brand-name {
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.15em;
  color: var(--text);
}

.status-pill {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  border: 1px solid var(--line-strong);
  border-radius: 100px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-dim);
}

.status-pill .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--warn);
  animation: pulse 2s ease-in-out infinite;
}

.status-pill.ok .dot { background: var(--ok); animation: none; }
.status-pill.err .dot { background: var(--err); animation: none; }

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

/* ============ MAIN ============ */
main {
  flex: 1;
  padding: 24px 20px 120px;
  max-width: 640px;
  width: 100%;
  margin: 0 auto;
}

.view {
  animation: fadeUp 0.3s ease-out;
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ============ SIGN-IN ============ */
.signin-card,
.empty-state,
.error-card {
  background: var(--bg-elev);
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 40px 28px;
  text-align: left;
  margin-top: 40px;
  position: relative;
  overflow: hidden;
}

.signin-card::before,
.empty-state::before,
.error-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--accent);
}

.eyebrow {
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 14px;
}

.eyebrow.warn { color: var(--warn); }

h1 {
  font-size: 28px;
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin: 0 0 12px;
}

p {
  color: var(--text-dim);
  font-size: 15px;
  line-height: 1.5;
  margin: 0 0 24px;
}

/* ============ BUTTONS ============ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 56px;
  padding: 0 24px;
  border: none;
  border-radius: 4px;
  font-family: var(--sans);
  font-size: 16px;
  font-weight: 600;
  letter-spacing: 0.01em;
  cursor: pointer;
  transition: transform 0.08s ease, background 0.2s ease, border-color 0.2s ease;
  text-decoration: none;
  width: 100%;
}

.btn:active {
  transform: scale(0.98);
}

.btn-primary {
  background: var(--accent);
  color: #0a0a0a;
  font-weight: 700;
}

.btn-primary:hover {
  background: #ff7d33;
}

.btn-secondary {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--line-strong);
}

.btn-secondary:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.link {
  background: none;
  border: none;
  color: var(--text-dim);
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  cursor: pointer;
  padding: 6px 10px;
}

.link:hover { color: var(--accent); }

/* ============ EMPTY STATE / MANUAL ENTRY ============ */
.empty-mark {
  font-size: 48px;
  color: var(--accent);
  line-height: 1;
  margin-bottom: 16px;
}

.manual-entry {
  margin-top: 32px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
}

.manual-entry label {
  display: block;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-bottom: 10px;
}

.input-row {
  display: flex;
  gap: 10px;
}

input[type="text"] {
  flex: 1;
  background: var(--bg);
  border: 1px solid var(--line-strong);
  border-radius: 4px;
  color: var(--text);
  font-family: var(--mono);
  font-size: 16px;
  padding: 14px 14px;
  min-height: 56px;
}

input[type="text"]:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

.input-row .btn {
  width: auto;
  min-width: 80px;
  flex-shrink: 0;
}

/* ============ LOADER ============ */
.loader {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 80px 20px;
}

.loader-bars {
  display: flex;
  gap: 6px;
  margin-bottom: 20px;
}

.loader-bars span {
  width: 6px;
  height: 32px;
  background: var(--accent);
  animation: loaderBar 1.2s ease-in-out infinite;
}

.loader-bars span:nth-child(2) { animation-delay: 0.15s; }
.loader-bars span:nth-child(3) { animation-delay: 0.3s; }

@keyframes loaderBar {
  0%, 40%, 100% { transform: scaleY(0.3); opacity: 0.4; }
  20% { transform: scaleY(1); opacity: 1; }
}

.loader-text {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-dim);
}

/* ============ UNIT DETAIL ============ */
.unit-header {
  border-left: 3px solid var(--accent);
  padding: 4px 0 4px 16px;
  margin-bottom: 24px;
}

.unit-id {
  font-family: var(--mono);
  font-size: 32px;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--text);
  line-height: 1.1;
}

.unit-meta {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-top: 6px;
}

.status-block {
  background: var(--bg-elev);
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 18px 20px;
  margin-bottom: 16px;
  position: relative;
}

.status-block::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--accent);
}

.status-label {
  font-family: var(--mono);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-bottom: 6px;
}

.status-value {
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.01em;
}

/* ============ FACTS GRID ============ */
.facts-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
  margin-bottom: 28px;
}

.fact {
  background: var(--bg-elev);
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 14px 16px;
}

.fact-label {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-faint);
  margin-bottom: 4px;
}

.fact-value {
  font-family: var(--mono);
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
}

.fact-value.highlight {
  color: var(--accent);
}

/* ============ ACTIONS ============ */
.actions {
  margin-top: 8px;
}

.actions-label {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-bottom: 12px;
}

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

.action-btn {
  background: var(--bg-elev);
  border: 1px solid var(--line-strong);
  border-radius: 4px;
  padding: 18px 20px;
  color: var(--text);
  font-family: var(--sans);
  font-size: 17px;
  font-weight: 600;
  text-align: left;
  cursor: pointer;
  transition: all 0.15s ease;
  min-height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.action-btn:hover {
  border-color: var(--accent);
  background: var(--bg-elev-2);
}

.action-btn:active {
  transform: scale(0.99);
}

.action-btn .arrow {
  font-family: var(--mono);
  color: var(--text-faint);
  transition: color 0.15s ease;
}

.action-btn:hover .arrow {
  color: var(--accent);
}

.action-btn.primary {
  border-color: var(--accent);
  background: linear-gradient(180deg, rgba(255, 107, 26, 0.08), transparent);
}

.action-btn.primary .arrow {
  color: var(--accent);
}

/* ============ FOLLOWUP ============ */
.followup {
  margin-top: 20px;
  background: var(--bg-elev);
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 20px;
  animation: fadeUp 0.25s ease-out;
}

.followup h3 {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 14px;
}

.followup .field {
  margin-bottom: 14px;
}

.followup label {
  display: block;
  font-size: 14px;
  font-weight: 500;
  color: var(--text);
  margin-bottom: 6px;
}

.followup select,
.followup input[type="text"],
.followup input[type="number"],
.followup textarea {
  width: 100%;
  background: var(--bg);
  border: 1px solid var(--line-strong);
  border-radius: 4px;
  color: var(--text);
  font-family: var(--mono);
  font-size: 15px;
  padding: 12px 14px;
  min-height: 50px;
}

.followup textarea {
  min-height: 80px;
  resize: vertical;
  font-family: var(--sans);
}

.followup select:focus,
.followup input:focus,
.followup textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

.followup-actions {
  display: flex;
  gap: 10px;
  margin-top: 18px;
}

.followup-actions .btn {
  flex: 1;
}

/* ============ RESULT BANNER ============ */
.result-banner {
  margin-top: 20px;
  padding: 16px 20px;
  border-radius: 4px;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 12px;
  animation: fadeUp 0.3s ease-out;
}

.result-banner.ok {
  background: rgba(74, 222, 128, 0.1);
  border: 1px solid rgba(74, 222, 128, 0.3);
  color: var(--ok);
}

.result-banner.err {
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.3);
  color: var(--err);
}

.result-banner .mark {
  font-family: var(--mono);
  font-size: 20px;
}

/* ============ BOTTOM BAR ============ */
.bottombar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 12px 20px;
  background: var(--bg);
  border-top: 1px solid var(--line);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--text-faint);
  z-index: 10;
}

/* ============ RESPONSIVE ============ */
@media (min-width: 560px) {
  .facts-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 380px) {
  h1 { font-size: 24px; }
  .unit-id { font-size: 28px; }
  main { padding: 20px 16px 120px; }
}