/* ========== Reset & Base ========== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --bg-primary: #1a1a2e;
  --bg-secondary: #16213e;
  --bg-card: #0f3460;
  --bg-input: #1a1a3e;
  --text-primary: #e0e0e0;
  --text-secondary: #a0a0b0;
  --text-muted: #6a6a7a;
  --accent: #00d2ff;
  --accent-hover: #00b8e6;
  --success: #00c853;
  --warning: #ffab00;
  --danger: #ff5252;
  --border: #2a2a4e;
  --radius: 8px;
  --shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

html, body {
  height: 100%;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  font-size: 16px;
  background: var(--bg-primary);
  color: var(--text-primary);
  -webkit-tap-highlight-color: transparent;
  overflow-x: hidden;
}

/* ========== App Shell ========== */
#app {
  max-width: 480px;
  margin: 0 auto;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ========== Header ========== */
.header {
  background: var(--bg-secondary);
  padding: 14px 16px;
  padding-top: calc(14px + env(safe-area-inset-top, 0px));
  padding-left: calc(16px + env(safe-area-inset-left, 0px));
  padding-right: calc(16px + env(safe-area-inset-right, 0px));
  display: flex;
  align-items: center;
  gap: 8px;
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 1px solid var(--border);
}

.header h1 {
  font-size: 18px;
  font-weight: 600;
  flex: 1;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  min-width: 0;
}

.header-actions {
  display: flex;
  gap: 6px;
  flex-shrink: 0;
}

.header .btn-back {
  background: none;
  border: none;
  color: var(--accent);
  font-size: 22px;
  cursor: pointer;
  padding: 4px 8px;
  border-radius: var(--radius);
}

.header .btn-back:active {
  background: var(--bg-card);
}

/* ========== Pages ========== */
.page {
  display: none;
  flex-direction: column;
  flex: 1;
  overflow-y: auto;
  padding: 16px;
  padding-bottom: calc(80px + env(safe-area-inset-bottom, 0px));
  padding-left: calc(16px + env(safe-area-inset-left, 0px));
  padding-right: calc(16px + env(safe-area-inset-right, 0px));
}

.page.active {
  display: flex;
}

/* ========== Buttons ========== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 20px;
  border: none;
  border-radius: var(--radius);
  font-size: 15px;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.15s;
  -webkit-user-select: none;
  user-select: none;
}

.btn:active {
  transform: scale(0.97);
}

.btn-primary {
  background: var(--accent);
  color: #000;
}

.btn-primary:hover {
  background: var(--accent-hover);
}

.btn-secondary {
  background: var(--bg-card);
  color: var(--text-primary);
  border: 1px solid var(--border);
}

.btn-block {
  width: 100%;
}

.btn-sm {
  padding: 8px 14px;
  font-size: 13px;
}

/* ========== Scanner ========== */
#scanner-container {
  width: 100%;
  aspect-ratio: 1;
  max-height: 350px;
  border-radius: var(--radius);
  overflow: hidden;
  background: #000;
  margin-bottom: 16px;
  position: relative;
}

#scanner-container video {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ========== Scan Overlay (聚焦框) ========== */
.scan-overlay {
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  display: flex;
  align-items: center;
  justify-content: center;
}

.scan-frame {
  width: 220px;
  height: 220px;
  position: relative;
  box-shadow: 0 0 0 9999px rgba(0, 0, 0, 0.45);
  border-radius: 2px;
}

.scan-corner {
  position: absolute;
  width: 22px;
  height: 22px;
}

.scan-corner-tl {
  top: -1px;
  left: -1px;
  border-top: 3px solid var(--accent);
  border-left: 3px solid var(--accent);
}

.scan-corner-tr {
  top: -1px;
  right: -1px;
  border-top: 3px solid var(--accent);
  border-right: 3px solid var(--accent);
}

.scan-corner-bl {
  bottom: -1px;
  left: -1px;
  border-bottom: 3px solid var(--accent);
  border-left: 3px solid var(--accent);
}

.scan-corner-br {
  bottom: -1px;
  right: -1px;
  border-bottom: 3px solid var(--accent);
  border-right: 3px solid var(--accent);
}

.scan-line {
  position: absolute;
  left: 4px;
  right: 4px;
  height: 2px;
  background: linear-gradient(to right, transparent, var(--accent), transparent);
  animation: scan-move 2s ease-in-out infinite;
}

@keyframes scan-move {
  0%, 100% { top: 4px; opacity: 0; }
  10% { opacity: 1; }
  90% { opacity: 1; }
  50% { top: calc(100% - 6px); }
}

/* ========== Home Status ========== */
.data-status-card {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 18px 16px;
  margin-top: 16px;
  background: var(--bg-card);
  border: 2px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  transition: border-color 0.25s, background 0.25s;
}

.data-status-card.status-ready {
  border-color: var(--success);
  background: rgba(0, 200, 83, 0.06);
}

.data-status-card.status-error {
  border-color: var(--danger);
  background: rgba(255, 82, 82, 0.06);
}

.data-status-card.status-loading {
  border-color: var(--accent);
}

.data-status-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 24px;
}

.status-ready .data-status-icon {
  background: rgba(0, 200, 83, 0.15);
}

.status-error .data-status-icon {
  background: rgba(255, 82, 82, 0.15);
}

.status-loading .data-status-icon {
  background: rgba(0, 210, 255, 0.12);
}

.data-status-info {
  min-width: 0;
  flex: 1;
}

.data-status-title {
  font-size: 16px;
  font-weight: 600;
}

.data-status-desc {
  margin-top: 4px;
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* ========== Inspection Result ========== */
.inspection-result-card {
  border-radius: 14px;
  padding: 18px 16px;
  margin-bottom: 16px;
  border: 2px solid var(--border);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.03), rgba(255, 255, 255, 0.01));
  box-shadow: var(--shadow);
  animation: fadeIn 0.3s ease;
}

.inspection-result-card.result-idle {
  border-color: var(--accent);
}

.inspection-result-card.result-normal {
  border-color: var(--success);
  background: linear-gradient(180deg, rgba(0, 200, 83, 0.18), rgba(0, 200, 83, 0.08));
}

.inspection-result-card.result-warning {
  border-color: var(--danger);
  background: linear-gradient(180deg, rgba(255, 82, 82, 0.2), rgba(255, 82, 82, 0.08));
  box-shadow: 0 6px 20px rgba(255, 82, 82, 0.18);
}

.inspection-result-card.result-invalid {
  border-color: var(--warning);
  background: linear-gradient(180deg, rgba(255, 171, 0, 0.16), rgba(255, 171, 0, 0.06));
}

.inspection-result-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 28px;
  padding: 0 10px;
  border-radius: 999px;
  background: rgba(0, 210, 255, 0.12);
  color: var(--accent);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.result-normal .inspection-result-badge {
  background: rgba(0, 200, 83, 0.18);
  color: #7df3a5;
}

.result-warning .inspection-result-badge {
  background: rgba(255, 82, 82, 0.2);
  color: #ffd6d6;
}

.result-invalid .inspection-result-badge {
  background: rgba(255, 171, 0, 0.2);
  color: #ffe4a3;
}

.inspection-result-title {
  margin-top: 12px;
  font-size: 22px;
  font-weight: 800;
  line-height: 1.3;
  word-break: break-word;
}

.inspection-result-message {
  margin-top: 8px;
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1.6;
}

.result-warning .inspection-result-title,
.result-warning .inspection-result-message {
  color: #fff1f1;
}

.result-normal .inspection-result-title {
  color: #bdf7cc;
}

.result-invalid .inspection-result-title {
  color: #ffe4a3;
}

/* ========== Recent Section ========== */
.recent-section {
  margin-top: 8px;
}

.section-title {
  margin-bottom: 10px;
  font-size: 15px;
  font-weight: 700;
  color: var(--text-primary);
}

.recent-empty {
  padding: 16px;
  text-align: center;
  color: var(--text-muted);
  background: rgba(255, 255, 255, 0.02);
  border: 1px dashed var(--border);
  border-radius: var(--radius);
  font-size: 13px;
}

.recent-record-item {
  margin-bottom: 12px;
  padding: 14px;
}

.recent-record-item:last-child {
  margin-bottom: 0;
}

.recent-record-item .inspection-result-title {
  font-size: 17px;
  margin-top: 10px;
}

.recent-record-item .inspection-result-message {
  font-size: 13px;
}

#inspection-result-area:empty::before {
  content: '等待抽检结果';
  display: block;
  margin-bottom: 16px;
  padding: 16px;
  border: 1px dashed var(--border);
  border-radius: var(--radius);
  color: var(--text-muted);
  text-align: center;
}

/* ========== Inspection Actions ========== */
.inspection-actions {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 16px;
}

/* ========== Toast ========== */
.toast {
  position: fixed;
  bottom: calc(24px + env(safe-area-inset-bottom, 0px));
  left: 50%;
  transform: translateX(-50%) translateY(80px);
  background: var(--success);
  color: #000;
  padding: 10px 24px;
  border-radius: 24px;
  font-size: 14px;
  font-weight: 500;
  z-index: 300;
  opacity: 0;
  transition: all 0.3s ease;
  pointer-events: none;
}

.toast.show {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
}

.toast.error {
  background: var(--danger);
  color: #fff;
}

/* ========== Animations ========== */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ========== Responsive ========== */
@media (min-width: 481px) {
  #app {
    border-left: 1px solid var(--border);
    border-right: 1px solid var(--border);
  }
}

@media (max-width: 380px) {
  .scan-frame {
    width: 190px;
    height: 190px;
  }

  .inspection-result-title {
    font-size: 20px;
  }
}

/* ========== App Footer ========== */
#app-footer {
  padding: 12px 16px;
  padding-bottom: calc(12px + env(safe-area-inset-bottom, 0px));
  padding-left: calc(16px + env(safe-area-inset-left, 0px));
  padding-right: calc(16px + env(safe-area-inset-right, 0px));
  text-align: center;
  font-size: 11px;
  color: var(--text-muted);
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: center;
  gap: 8px;
  flex-shrink: 0;
}

/* ========== iOS 放大适配 ========== */
@supports (-webkit-touch-callout: none) {
  html, body {
    font-size: 18px;
  }

  .header h1 {
    font-size: 20px;
  }

  .header .btn-back {
    font-size: 24px;
    padding: 6px 10px;
  }

  .btn {
    padding: 14px 24px;
    font-size: 16px;
  }

  .btn-sm {
    padding: 10px 16px;
    font-size: 14px;
  }

  .data-status-card,
  .inspection-result-card,
  .recent-empty {
    font-size: 15px;
  }

  .toast {
    font-size: 15px;
    padding: 12px 28px;
  }
}