/* ── Material 톤 테마 (Bootstrap 5 위에 레이어) ───────────────────────────────── */
:root {
  --md-primary: #3f51b5;          /* Indigo 500 */
  --md-primary-dark: #303f9f;     /* Indigo 700 */
  --md-primary-light: #e8eaf6;    /* Indigo 50  */
  --md-accent: #ff4081;           /* Pink A200  */
  --md-surface: #ffffff;
  --md-bg: #f4f5f7;
  --md-on-surface: #212121;
  --md-muted: #6b7280;

  /* Material elevation */
  --md-elev-1: 0 2px 1px -1px rgba(0,0,0,.2), 0 1px 1px 0 rgba(0,0,0,.14), 0 1px 3px 0 rgba(0,0,0,.12);
  --md-elev-2: 0 3px 1px -2px rgba(0,0,0,.2), 0 2px 2px 0 rgba(0,0,0,.14), 0 1px 5px 0 rgba(0,0,0,.12);
  --md-elev-4: 0 2px 4px -1px rgba(0,0,0,.2), 0 4px 5px 0 rgba(0,0,0,.14), 0 1px 10px 0 rgba(0,0,0,.12);

  /* Bootstrap primary 를 Indigo 로 */
  --bs-primary: var(--md-primary);
  --bs-primary-rgb: 63, 81, 181;
  --bs-link-color-rgb: 63, 81, 181;
}

body {
  font-family: "Roboto", "Malgun Gothic", system-ui, sans-serif;
  background: var(--md-bg);
  color: var(--md-on-surface);
}

.view { min-height: 100vh; }
.hidden { display: none !important; }
.container { max-width: 1040px; }

/* ── App bar ──────────────────────────────────────────────────────────────── */
.appbar {
  display: flex;
  align-items: center;
  gap: 12px;
  height: 64px;
  padding: 0 16px;
  background: var(--md-primary);
  color: #fff;
  box-shadow: var(--md-elev-4);
  position: sticky;
  top: 0;
  z-index: 10;
}
.appbar-icon { font-size: 26px; }
.appbar-title { font-size: 20px; font-weight: 500; }
.appbar-sub { font-size: 14px; font-weight: 400; opacity: .8; }

/* ── Cards (Material elevation) ───────────────────────────────────────────── */
.md-card {
  border: none;
  border-radius: 12px;
  box-shadow: var(--md-elev-1);
  background: var(--md-surface);
  overflow: hidden;
}

/* ── Buttons (Material elevation + ripple-ish) ────────────────────────────── */
.md-btn {
  border-radius: 8px;
  font-weight: 500;
  letter-spacing: .2px;
  text-transform: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  box-shadow: var(--md-elev-2);
  transition: box-shadow .2s, transform .05s;
}
.md-btn:hover { box-shadow: var(--md-elev-4); }
.md-btn:active { transform: translateY(1px); }
.md-btn .material-icons { font-size: 20px; }

.btn-primary {
  --bs-btn-bg: var(--md-primary);
  --bs-btn-border-color: var(--md-primary);
  --bs-btn-hover-bg: var(--md-primary-dark);
  --bs-btn-hover-border-color: var(--md-primary-dark);
  --bs-btn-active-bg: var(--md-primary-dark);
  --bs-btn-active-border-color: var(--md-primary-dark);
  --bs-btn-focus-shadow-rgb: 63, 81, 181;
}

/* 아이콘 전용 버튼 (앱바 뒤로가기) */
.btn-icon {
  color: #fff;
  border: none;
  padding: 6px;
  border-radius: 50%;
  line-height: 0;
  display: inline-flex;
}
.btn-icon:hover { background: rgba(255,255,255,.16); color: #fff; }

/* ── Form (floating labels) ───────────────────────────────────────────────── */
.form-control, .form-select {
  border-radius: 8px;
}
.form-control:focus, .form-select:focus {
  border-color: var(--md-primary);
  box-shadow: 0 0 0 .2rem rgba(63, 81, 181, .2);
}
.form-floating > label { color: var(--md-muted); }

/* 스캔 입력 강조 */
.scan-input {
  font-size: 20px;
  font-variant-numeric: tabular-nums;
}
.scan-input:focus { border-color: var(--md-accent); box-shadow: 0 0 0 .2rem rgba(255,64,129,.18); }

.scan-msg {
  display: inline-block;
  min-width: 150px;
  font-size: 14px;
  font-weight: 500;
  padding: 6px 12px;
  border-radius: 16px;
  text-align: center;
}
.scan-msg:empty { display: none; }
.scan-msg.ok { color: #1b5e20; background: #e8f5e9; }
.scan-msg.err { color: #b71c1c; background: #ffebee; }

/* ── Table (Material data table) ──────────────────────────────────────────── */
.md-table { --bs-table-hover-bg: var(--md-primary-light); }
.md-table thead th {
  background: #fafafa;
  color: var(--md-muted);
  font-weight: 500;
  font-size: 12px;
  letter-spacing: .4px;
  text-transform: uppercase;
  border-bottom: 2px solid #eee;
  white-space: nowrap;
}
.md-table tbody td {
  border-bottom: 1px solid #f0f0f0;
  font-size: 14px;
}
.md-table td.num, .md-table th.num { text-align: right; font-variant-numeric: tabular-nums; }
.md-table tbody tr.clickable { cursor: pointer; }
.md-table td.empty {
  text-align: center;
  color: var(--md-muted);
  padding: 32px 12px;
}
.md-table td.work-cell { font-weight: 700; color: var(--md-primary); }

/* 스캔 하이라이트 (Material accent flash) */
.md-table tbody tr.flash { animation: md-flash .7s ease; }
@keyframes md-flash {
  0%   { background: rgba(255, 64, 129, .25); }
  100% { background: transparent; }
}