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

:root {
  --primary:      #0057A8;
  --primary-dark: #003d7a;
  --primary-light:#e8f1fb;
  --accent:       #E8A020;
  --danger:       #d93025;
  --success:      #1a7f37;
  --bg:           #f4f6fa;
  --surface:      #ffffff;
  --border:       #d0d7e3;
  --text:         #1a2133;
  --text-muted:   #6b7a99;
  --shadow:       0 2px 12px rgba(0,0,0,.10);
  --shadow-lg:    0 8px 32px rgba(0,0,0,.14);
  --radius:       10px;
  --radius-sm:    6px;
}

html { font-size: 15px; }
body {
  font-family: 'Segoe UI', Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  direction: ltr;
}

/* ── Typography ───────────────────────────────────────────────────────────── */
h1 { font-size: 1.7rem; font-weight: 700; }
h2 { font-size: 1.3rem; font-weight: 600; }
h3 { font-size: 1.1rem; font-weight: 600; }
a  { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ── Navbar ───────────────────────────────────────────────────────────────── */
.navbar {
  background: var(--primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 2rem;
  height: 60px;
  box-shadow: var(--shadow);
  position: sticky; top: 0; z-index: 100;
  flex-wrap: wrap;
  gap: 0;
}
.navbar-brand { display: flex; align-items: center; gap: .6rem; font-size: 1.15rem; font-weight: 700; flex: 1; }
.navbar-brand img { height: 36px; border-radius: 4px; }
.navbar-end { display: flex; align-items: center; gap: 1rem; }
.navbar-user { font-size: .88rem; opacity: .9; }
.navbar-role {
  background: rgba(255,255,255,.18);
  border-radius: 999px;
  padding: .2rem .75rem;
  font-size: .78rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .04em;
}
.navbar-nav { display: flex; gap: .25rem; align-items: center; margin: 0 1.5rem; }
.navbar-version { font-size: .7rem; opacity: .55; font-weight: 400; margin-left: .3rem; align-self: flex-end; padding-bottom: .2rem; }
.navbar-nav a {
  color: rgba(255,255,255,.85);
  padding: .4rem .9rem;
  border-radius: var(--radius-sm);
  font-size: .9rem;
  transition: background .15s;
}
.navbar-nav a:hover, .navbar-nav a.active {
  background: rgba(255,255,255,.18);
  color: #fff;
  text-decoration: none;
}

/* ── Page Layout ─────────────────────────────────────────────────────────── */
.page { max-width: 900px; margin: 2rem auto; padding: 0 1rem; }
.page-wide { max-width: 1200px; margin: 2rem auto; padding: 0 1rem; }

/* ── Card ─────────────────────────────────────────────────────────────────── */
.card {
  background: var(--surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 2rem;
}
.card-header {
  border-bottom: 1px solid var(--border);
  padding-bottom: 1rem;
  margin-bottom: 1.5rem;
}
.card-title { font-size: 1.15rem; font-weight: 700; color: var(--primary); }
.card-subtitle { font-size: .85rem; color: var(--text-muted); margin-top: .2rem; }

/* ── Login Page ───────────────────────────────────────────────────────────── */
.login-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
}
.login-card {
  background: var(--surface);
  border-radius: 16px;
  box-shadow: var(--shadow-lg);
  padding: 2.5rem 2.5rem 2rem;
  width: 100%;
  max-width: 400px;
  text-align: center;
}
.login-logo { margin-bottom: 1rem; }
.login-logo img { height: 70px; }
.login-title { font-size: 1.4rem; font-weight: 700; color: var(--primary); margin-bottom: .25rem; }
.login-subtitle { font-size: .88rem; color: var(--text-muted); margin-bottom: 1.75rem; }

/* ── Form Elements ────────────────────────────────────────────────────────── */
.form-group { margin-bottom: 1.1rem; text-align: left; }
.form-group label {
  display: block;
  font-size: .85rem;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: .35rem;
  text-transform: uppercase;
  letter-spacing: .04em;
}
.form-control {
  width: 100%;
  padding: .6rem .85rem;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: .95rem;
  color: var(--text);
  background: var(--surface);
  transition: border-color .15s, box-shadow .15s;
  outline: none;
}
.form-control:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(0,87,168,.12);
}
.form-control.error { border-color: var(--danger); }

/* Input + Scan button group */
.input-group {
  display: flex;
  gap: .4rem;
  align-items: center;
}
.input-group .form-control { flex: 1; }

/* ── Buttons ──────────────────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .4rem;
  padding: .6rem 1.25rem;
  border-radius: var(--radius-sm);
  font-size: .9rem;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: background .15s, transform .1s, box-shadow .15s;
  white-space: nowrap;
}
.btn:active { transform: scale(.97); }
.btn-primary {
  background: var(--primary);
  color: #fff;
}
.btn-primary:hover { background: var(--primary-dark); }
.btn-success {
  background: var(--success);
  color: #fff;
}
.btn-success:hover { background: #145f28; }
.btn-danger {
  background: var(--danger);
  color: #fff;
}
.btn-outline {
  background: transparent;
  border: 1.5px solid var(--border);
  color: var(--text);
}
.btn-outline:hover { background: var(--bg); }
.btn-icon {
  background: var(--primary-light);
  color: var(--primary);
  border: 1.5px solid var(--primary);
  padding: .5rem .7rem;
  border-radius: var(--radius-sm);
  font-size: 1rem;
  cursor: pointer;
  transition: background .15s;
}
.btn-icon:hover { background: #ccdff5; }
.btn-block { width: 100%; }
.btn-lg { padding: .75rem 1.5rem; font-size: 1rem; }
.btn-sm { padding: .35rem .8rem; font-size: .82rem; }

/* ── Submit Bar ───────────────────────────────────────────────────────────── */
.submit-bar {
  margin-top: 1.75rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: flex-end;
  gap: .75rem;
}

/* ── Fields Grid ─────────────────────────────────────────────────────────── */
.fields-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1rem 1.5rem;
}

/* ── Alerts ───────────────────────────────────────────────────────────────── */
.alert {
  padding: .75rem 1rem;
  border-radius: var(--radius-sm);
  font-size: .9rem;
  margin-bottom: 1rem;
  display: flex;
  align-items: flex-start;
  gap: .5rem;
}
.alert-danger  { background: #fde8e8; color: var(--danger); border: 1px solid #f5bcbc; }
.alert-success { background: #e8f8ee; color: var(--success); border: 1px solid #b8e8c8; }
.alert-warning { background: #fef8e7; color: #7a5a00; border: 1px solid #f5dea0; }
.alert-info    { background: var(--primary-light); color: var(--primary); border: 1px solid #b0ceee; }

/* ── Badge ────────────────────────────────────────────────────────────────── */
.badge {
  display: inline-block;
  padding: .2rem .6rem;
  border-radius: 999px;
  font-size: .75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .04em;
}
.badge-admin    { background: #fde8e8; color: var(--danger); }
.badge-manager  { background: #e8f1fb; color: var(--primary); }
.badge-operator { background: #e8f8ee; color: var(--success); }

/* ── Table ────────────────────────────────────────────────────────────────── */
.table-wrap { overflow-x: auto; border-radius: var(--radius); }
table {
  width: 100%;
  border-collapse: collapse;
  font-size: .88rem;
}
thead th {
  background: var(--primary);
  color: #fff;
  padding: .7rem .9rem;
  text-align: left;
  font-weight: 600;
  white-space: nowrap;
}
tbody tr { border-bottom: 1px solid var(--border); transition: background .1s; }
tbody tr:hover { background: var(--primary-light); }
tbody td { padding: .65rem .9rem; vertical-align: middle; }
tbody tr:last-child { border-bottom: none; }

/* ── Filters Row ─────────────────────────────────────────────────────────── */
.filters {
  display: flex;
  flex-wrap: wrap;
  gap: .75rem;
  align-items: flex-end;
  margin-bottom: 1.25rem;
}
.filter-group { display: flex; flex-direction: column; gap: .3rem; }
.filter-group label { font-size: .8rem; font-weight: 600; color: var(--text-muted); text-transform: uppercase; letter-spacing: .04em; }
.filter-group .form-control { min-width: 150px; padding: .5rem .75rem; }

/* ── Modal ────────────────────────────────────────────────────────────────── */
.modal-overlay {
  display: none;
  position: fixed; inset: 0;
  background: rgba(0,0,0,.55);
  z-index: 500;
  align-items: center;
  justify-content: center;
}
.modal-overlay.open { display: flex; }
.modal {
  background: var(--surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  padding: 1.5rem;
  width: 100%;
  max-width: 480px;
  position: relative;
}
.modal-title { font-size: 1.05rem; font-weight: 700; margin-bottom: 1rem; color: var(--primary); }
.modal-close {
  position: absolute; top: .75rem; right: .75rem;
  background: none; border: none; font-size: 1.3rem;
  cursor: pointer; color: var(--text-muted);
  line-height: 1;
}
.modal-close:hover { color: var(--danger); }
#qr-reader { width: 100%; border-radius: var(--radius-sm); overflow: hidden; }

/* ── Stats Row ───────────────────────────────────────────────────────────── */
.stats-row {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 1.5rem;
}
.stat-card {
  background: var(--surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.1rem 1.5rem;
  flex: 1 1 160px;
  min-width: 140px;
}
.stat-value { font-size: 2rem; font-weight: 800; color: var(--primary); }
.stat-label { font-size: .83rem; color: var(--text-muted); margin-top: .1rem; }

/* ── Page Header ─────────────────────────────────────────────────────────── */
.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
  gap: .75rem;
}
.page-header h1 { color: var(--primary); }

/* ── Empty State ─────────────────────────────────────────────────────────── */
.empty-state {
  text-align: center;
  padding: 3rem 1rem;
  color: var(--text-muted);
}
.empty-state svg { opacity: .3; margin-bottom: .75rem; }

/* ── Spinner ──────────────────────────────────────────────────────────────── */
.spinner {
  width: 22px; height: 22px;
  border: 3px solid rgba(255,255,255,.3);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin .7s linear infinite;
  display: inline-block;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ── Responsive ───────────────────────────────────────────────────────────── */
@media (max-width: 600px) {
  .page, .page-wide { padding: 0 .4rem; margin: .5rem auto; }
  .card { padding: .75rem .75rem; }
  .fields-grid { grid-template-columns: 1fr; }

  /* Stats: 2x2 grid, compact */
  .stats-row { gap: .5rem; margin-bottom: .75rem; }
  .stat-card  { padding: .6rem .9rem; flex: 1 1 calc(50% - .25rem); min-width: 0; }
  .stat-value { font-size: 1.5rem; }
  .stat-label { font-size: .75rem; }

  /* Filters: 2 columns side by side */
  .filters { display: grid; grid-template-columns: 1fr 1fr; gap: .5rem; margin-bottom: .75rem; }
  .filter-group .form-control { min-width: 0; padding: .4rem .5rem; font-size: .85rem; }
  .filter-group label { font-size: .72rem; }

  /* Filter buttons row spans full width */
  .filters .filter-group:last-child { grid-column: 1 / -1; flex-direction: row; align-items: center; justify-content: flex-end; gap: .5rem; }
  .filters .filter-group:last-child label { display: none; }

  /* Page header compact */
  .page-header { margin-bottom: .75rem; }
  .page-header h1 { font-size: 1.3rem; }

  /* Navbar: brand+logout on top row, nav links on second row */
  .navbar {
    height: auto;
    padding: .5rem .75rem;
    gap: 0;
    align-items: center;
  }
  .navbar-brand {
    font-size: 1rem;
    flex: 1;
    order: 1;
  }
  .navbar-brand img { height: 28px; }
  .navbar-end {
    order: 2;
    gap: .5rem;
  }
  .navbar-user,
  .navbar-role { display: none; }
  .navbar-nav {
    order: 3;
    width: calc(100% + 1.5rem);
    margin: .4rem -.75rem -.5rem;
    padding: .3rem .75rem;
    background: rgba(0,0,0,.18);
    justify-content: center;
    gap: 0;
  }
  .navbar-nav a {
    font-size: .82rem;
    padding: .35rem .6rem;
  }
}

/* ── Modal Body ──────────────────────────────────────────────────────────────── */
.modal-body { display: flex; flex-direction: column; gap: .9rem; }

/* ── Form Error & Password Toggle (shared across pages) ─────────────────────── */
.form-error {
  font-size: .8rem;
  color: var(--danger);
  margin-top: .25rem;
  display: none;
}
.pwd-toggle { position: relative; }
.pwd-toggle .form-control { padding-right: 2.5rem; }
.pwd-toggle-btn {
  position: absolute; right: .6rem; top: 50%; transform: translateY(-50%);
  background: none; border: none; cursor: pointer; font-size: 1rem;
  color: var(--text-muted); padding: 0; line-height: 1;
}
.pwd-toggle-btn:hover { color: var(--primary); }

/* ── Data Entry Layout ───────────────────────────────────────────────────────── */
.entry-controls-row {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  padding: .75rem 1.25rem;
  flex-wrap: wrap;
  margin-bottom: 1rem;
}
.controls-group { display: flex; align-items: center; gap: .4rem; }
.controls-label {
  font-weight: 600;
  color: var(--text-muted);
  font-size: .88rem;
  white-space: nowrap;
  margin-right: .15rem;
}
.controls-divider { width: 1px; height: 28px; background: var(--border); }

.toggle-btn {
  padding: .3rem .85rem;
  border: 1.5px solid var(--border);
  background: var(--surface);
  border-radius: var(--radius-sm);
  font-size: .88rem;
  font-weight: 500;
  cursor: pointer;
  color: var(--text-muted);
  transition: all .15s;
}
.toggle-btn.active {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
  font-weight: 700;
}
.toggle-btn:hover:not(.active) {
  border-color: var(--primary);
  color: var(--primary);
}

.entry-layout {
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: 1rem;
  align-items: start;
  margin-bottom: 0;
}
.entry-left, .entry-right { padding: 1.25rem; }
.entry-section-title {
  font-weight: 700;
  font-size: 1rem;
  color: var(--primary);
  margin-bottom: 1.1rem;
  padding-bottom: .5rem;
  border-bottom: 2px solid var(--primary-light);
}

/* Shelf groups */
.shelf-group {
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: .75rem;
  margin-bottom: .75rem;
  background: var(--bg);
}
.shelf-group:last-child { margin-bottom: 0; }
.shelf-title {
  font-weight: 700;
  font-size: .8rem;
  color: var(--primary);
  text-transform: uppercase;
  letter-spacing: .06em;
  margin-bottom: .6rem;
}
.shelf-group .form-group { margin-bottom: .6rem; }

@media (max-width: 750px) {
  .entry-layout { grid-template-columns: 1fr; }
  .entry-controls-row { gap: .75rem; }
  .controls-divider { display: none; }
}