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

:root {
  --primary: #1a73e8;
  --primary-dark: #1557b0;
  --primary-light: #e8f0fe;
  --success: #188038;
  --success-light: #e6f4ea;
  --warning: #e37400;
  --warning-light: #fef3e2;
  --danger: #c5221f;
  --danger-light: #fce8e6;
  --neutral: #5f6368;
  --neutral-light: #f8f9fa;
  --border: #dadce0;
  --surface: #fff;
  --sidebar-bg: #202124;
  --sidebar-text: #e8eaed;
  --sidebar-hover: #3c4043;
  --sidebar-active: #1a73e8;
  --shadow: 0 1px 3px rgba(0,0,0,.12), 0 1px 2px rgba(0,0,0,.08);
  --shadow-md: 0 4px 12px rgba(0,0,0,.1);
  --radius: 8px;
  --sidebar-w: 240px;
  --topbar-h: 56px;
  --font: 'Segoe UI', system-ui, -apple-system, sans-serif;
}

body { font-family: var(--font); background: #f1f3f4; color: #202124; display: flex; min-height: 100vh; }

/* ── Sidebar ──────────────────────────────────────────────────────────── */
.sidebar {
  width: var(--sidebar-w);
  background: var(--sidebar-bg);
  color: var(--sidebar-text);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0; left: 0; bottom: 0;
  z-index: 100;
  transition: transform .25s ease;
  overflow-y: auto;
}

.sidebar-header {
  padding: 16px;
  border-bottom: 1px solid #3c4043;
}

.logo { display: flex; align-items: center; gap: 12px; }
.logo-icon { font-size: 28px; }
.logo-name { font-size: 16px; font-weight: 700; color: #fff; }
.logo-sub { font-size: 11px; color: #9aa0a6; }

.user-bar {
  padding: 10px 14px;
  border-bottom: 1px solid #3c4043;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}
.user-info { display: flex; align-items: center; gap: 10px; min-width: 0; }
.user-avatar {
  width: 32px; height: 32px; border-radius: 50%;
  background: var(--primary); color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-size: 14px; font-weight: 700; flex-shrink: 0;
}
.user-details { min-width: 0; }
.user-name { font-size: 13px; font-weight: 600; color: #fff; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.user-role { font-size: 11px; color: #9aa0a6; }
.btn-logout {
  background: none; border: none; cursor: pointer;
  color: #9aa0a6; font-size: 16px; padding: 4px 6px;
  border-radius: 4px; transition: color .15s, background .15s; flex-shrink: 0;
}
.btn-logout:hover { color: var(--danger); background: rgba(197,34,31,.15); }

/* ── Login overlay ─────────────────────────────────────────────────────── */
.login-overlay {
  position: fixed; inset: 0; z-index: 9999;
  background: #f1f3f4;
  display: flex; align-items: center; justify-content: center;
}
.login-box {
  background: #fff; border-radius: 12px;
  box-shadow: 0 8px 32px rgba(0,0,0,.14);
  padding: 40px 36px; width: 100%; max-width: 380px;
  text-align: center;
}
.login-logo { font-size: 48px; margin-bottom: 8px; }
.login-brand { font-size: 22px; font-weight: 700; color: #202124; }
.login-sub { font-size: 13px; color: var(--neutral); margin-bottom: 4px; }
.login-box .form-group { text-align: left; margin-bottom: 14px; }
.login-box .form-group label { font-size: 13px; font-weight: 500; color: #444; margin-bottom: 5px; display: block; }
.login-box input[type="text"],
.login-box input[type="password"] {
  width: 100%; padding: 10px 12px; border: 1.5px solid var(--border);
  border-radius: 6px; font-size: 14px; outline: none; transition: border-color .15s;
}
.login-box input:focus { border-color: var(--primary); }
.pwd-toggle {
  position: absolute; right: 10px; top: 50%; transform: translateY(-50%);
  background: none; border: none; cursor: pointer; font-size: 15px; color: var(--neutral);
  padding: 0; line-height: 1;
}
.login-error {
  background: var(--danger-light); color: var(--danger);
  border-radius: 6px; padding: 8px 12px; font-size: 13px;
  margin-bottom: 10px; text-align: left;
}
.login-hint { font-size: 12px; color: #9aa0a6; margin-top: 18px; }

.nav-links { list-style: none; padding: 8px 0; flex: 1; }
.nav-separator { height: 1px; background: #3c4043; margin: 8px 16px; }

.nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 16px;
  color: var(--sidebar-text);
  text-decoration: none;
  font-size: 14px;
  border-radius: 0;
  transition: background .15s;
  white-space: nowrap;
}
.nav-item:hover { background: var(--sidebar-hover); }
.nav-item.active { background: var(--sidebar-active); color: #fff; font-weight: 600; }
.nav-icon { font-size: 16px; width: 20px; text-align: center; }

/* ── Main Wrapper ─────────────────────────────────────────────────────── */
.main-wrapper {
  margin-left: var(--sidebar-w);
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* ── Topbar ───────────────────────────────────────────────────────────── */
.topbar {
  height: var(--topbar-h);
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  padding: 0 24px;
  gap: 16px;
  position: sticky;
  top: 0;
  z-index: 50;
  box-shadow: var(--shadow);
}
.hamburger {
  display: none;
  background: none;
  border: none;
  font-size: 20px;
  cursor: pointer;
  color: var(--neutral);
}
.page-title { font-size: 18px; font-weight: 600; flex: 1; }
.today-date { font-size: 13px; color: var(--neutral); }

/* ── Content ──────────────────────────────────────────────────────────── */
.content { padding: 24px; flex: 1; }

/* ── Cards & Sections ─────────────────────────────────────────────────── */
.card {
  background: var(--surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 20px;
  margin-bottom: 20px;
}
.card-title {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 16px;
  color: #202124;
  display: flex;
  align-items: center;
  gap: 8px;
}

/* ── Stat Grid ────────────────────────────────────────────────────────── */
.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
  margin-bottom: 20px;
}
.stat-card {
  background: var(--surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.stat-label { font-size: 12px; color: var(--neutral); text-transform: uppercase; letter-spacing: .5px; }
.stat-value { font-size: 28px; font-weight: 700; color: #202124; }
.stat-sub { font-size: 12px; color: var(--neutral); }
.stat-card.primary .stat-value { color: var(--primary); }
.stat-card.success .stat-value { color: var(--success); }
.stat-card.warning .stat-value { color: var(--warning); }
.stat-card.danger  .stat-value { color: var(--danger); }

/* ── Two-column grid ──────────────────────────────────────────────────── */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
@media (max-width: 900px) { .grid-2 { grid-template-columns: 1fr; } }

/* ── Forms ────────────────────────────────────────────────────────────── */
.form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 16px;
  margin-bottom: 16px;
}
.form-group { display: flex; flex-direction: column; gap: 4px; }
.form-group label { font-size: 13px; font-weight: 500; color: #444; }
.form-group input,
.form-group select,
.form-group textarea {
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 9px 12px;
  font-size: 14px;
  font-family: var(--font);
  color: #202124;
  background: #fff;
  transition: border-color .15s, box-shadow .15s;
  outline: none;
  width: 100%;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(26,115,232,.12);
}
.form-group textarea { resize: vertical; min-height: 72px; }
.form-actions { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.full-span { grid-column: 1 / -1; }

/* ── Buttons ──────────────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 9px 18px;
  border-radius: 6px;
  font-size: 14px;
  font-weight: 500;
  font-family: var(--font);
  cursor: pointer;
  border: none;
  transition: background .15s, box-shadow .15s;
  white-space: nowrap;
}
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); box-shadow: var(--shadow); }
.btn-success { background: var(--success); color: #fff; }
.btn-success:hover { background: #146c2e; }
.btn-danger { background: var(--danger); color: #fff; }
.btn-danger:hover { background: #a50e0e; }
.btn-ghost { background: transparent; color: var(--neutral); border: 1px solid var(--border); }
.btn-ghost:hover { background: var(--neutral-light); }
.btn-sm { padding: 5px 12px; font-size: 12px; }
.btn-icon { padding: 6px; border-radius: 4px; }

/* ── Tables ───────────────────────────────────────────────────────────── */
.table-wrapper { overflow-x: auto; }
table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}
thead th {
  text-align: left;
  padding: 10px 14px;
  font-size: 12px;
  font-weight: 600;
  color: var(--neutral);
  text-transform: uppercase;
  letter-spacing: .4px;
  border-bottom: 2px solid var(--border);
  background: var(--neutral-light);
  white-space: nowrap;
}
tbody td {
  padding: 11px 14px;
  border-bottom: 1px solid var(--border);
  vertical-align: middle;
}
tbody tr:hover { background: #f8f9fa; }
tbody tr:last-child td { border-bottom: none; }

/* ── Badges / Pills ───────────────────────────────────────────────────── */
.badge {
  display: inline-block;
  padding: 2px 9px;
  border-radius: 99px;
  font-size: 12px;
  font-weight: 600;
}
.badge-success { background: var(--success-light); color: var(--success); }
.badge-warning { background: var(--warning-light); color: var(--warning); }
.badge-danger  { background: var(--danger-light); color: var(--danger); }
.badge-primary { background: var(--primary-light); color: var(--primary); }
.badge-neutral { background: #f1f3f4; color: var(--neutral); }

/* ── Filter bar ───────────────────────────────────────────────────────── */
.filter-bar {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  align-items: flex-end;
  margin-bottom: 16px;
}
.filter-bar .form-group { min-width: 160px; }
.filter-bar label { font-size: 12px; }

/* ── Activity feed ────────────────────────────────────────────────────── */
.activity-list { list-style: none; }
.activity-item {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
}
.activity-item:last-child { border-bottom: none; }
.activity-dot {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  flex-shrink: 0;
}
.activity-dot.receipt { background: var(--success-light); }
.activity-dot.consumption { background: var(--warning-light); }
.activity-body { flex: 1; }
.activity-body strong { font-size: 14px; }
.activity-body .meta { font-size: 12px; color: var(--neutral); margin-top: 2px; }

/* ── Low stock ────────────────────────────────────────────────────────── */
.low-stock-list { display: flex; flex-direction: column; gap: 8px; }
.low-stock-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 14px;
  background: var(--danger-light);
  border-radius: 6px;
  font-size: 14px;
}
.low-stock-item .balance { font-weight: 700; color: var(--danger); }

/* ── Empty state ──────────────────────────────────────────────────────── */
.empty-state {
  text-align: center;
  padding: 40px 20px;
  color: var(--neutral);
}
.empty-state .empty-icon { font-size: 40px; margin-bottom: 12px; }
.empty-state p { font-size: 14px; }

/* ── Toast ────────────────────────────────────────────────────────────── */
.toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.toast {
  padding: 12px 18px;
  border-radius: 6px;
  color: #fff;
  font-size: 14px;
  box-shadow: var(--shadow-md);
  animation: slideIn .25s ease;
  max-width: 320px;
}
.toast.success { background: var(--success); }
.toast.error { background: var(--danger); }
.toast.info { background: var(--primary); }
@keyframes slideIn { from { transform: translateX(100%); opacity:0; } to { transform: none; opacity:1; } }

/* ── Modal ────────────────────────────────────────────────────────────── */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.45);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9000;
}
.modal-box {
  background: #fff;
  border-radius: var(--radius);
  padding: 28px;
  max-width: 380px;
  width: 90%;
  box-shadow: var(--shadow-md);
}
.modal-box p { font-size: 15px; margin-bottom: 20px; }
.modal-actions { display: flex; gap: 10px; justify-content: flex-end; }

/* ── Stock Alert Banner ───────────────────────────────────────────────── */
.stock-alert {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  border-radius: 8px;
  border-left: 4px solid transparent;
  flex-wrap: wrap;
}
.stock-alert-success {
  background: var(--success-light);
  border-color: var(--success);
}
.stock-alert-warning {
  background: var(--warning-light);
  border-color: var(--warning);
}
.stock-alert-danger {
  background: var(--danger-light);
  border-color: var(--danger);
}
.stock-alert-icon { font-size: 22px; flex-shrink: 0; }
.stock-alert > div { flex: 1; font-size: 13px; line-height: 1.5; }
.stock-alert > div strong { font-size: 14px; }

.btn-disabled {
  opacity: 0.55;
  cursor: not-allowed !important;
}

/* ── Upload Drop Zone ─────────────────────────────────────────────────── */
.upload-drop-zone {
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  padding: 32px 20px;
  text-align: center;
  cursor: pointer;
  transition: border-color .2s, background .2s;
  background: var(--neutral-light);
}
.upload-drop-zone:hover,
.upload-drop-zone.drag-over {
  border-color: var(--primary);
  background: var(--primary-light);
}
.upload-drop-zone.has-file {
  border-color: var(--success);
  background: var(--success-light);
}
.upload-icon { font-size: 36px; margin-bottom: 8px; }
.upload-label { font-size: 15px; font-weight: 600; color: #202124; }
.upload-sub { font-size: 13px; color: var(--neutral); margin-top: 4px; }
.btn-link {
  background: none; border: none; color: var(--primary);
  font-size: 13px; cursor: pointer; text-decoration: underline; padding: 0;
}

/* ── Bulk Result ──────────────────────────────────────────────────────── */
.bulk-result {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
}
.bulk-summary {
  display: flex;
  gap: 16px;
  padding: 12px 16px;
  background: var(--neutral-light);
  flex-wrap: wrap;
}
.bulk-stat {
  font-size: 14px;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 6px;
}
.bulk-stat.success { color: var(--success); }
.bulk-stat.warn { color: var(--warning); }
.bulk-skipped-title {
  font-size: 13px;
  font-weight: 600;
  padding: 8px 16px;
  color: var(--neutral);
  border-top: 1px solid var(--border);
  background: #fff;
}

/* ── Nav section labels ───────────────────────────────────────────────── */
.nav-section-label {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #6e7275;
  padding: 14px 16px 4px;
  list-style: none;
  pointer-events: none;
  user-select: none;
}

/* ── Tabs (used by machinery pages) ──────────────────────────────────── */
.tab-bar {
  display: flex;
  gap: 0;
  border-bottom: 2px solid var(--border);
  margin-bottom: 20px;
  flex-wrap: wrap;
}
.tab-btn {
  padding: 9px 18px;
  font-size: 14px;
  font-weight: 500;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--neutral);
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  transition: color .15s, border-color .15s;
}
.tab-btn.active { color: var(--primary); border-bottom-color: var(--primary); }
.tab-btn:hover:not(.active) { color: #202124; }

/* ── Condition colour tokens ──────────────────────────────────────────── */
.badge-good          { background: #e6f4ea; color: #188038; }          /* green  */
.badge-needs-maint   { background: #fef3e2; color: #e37400; }          /* amber  */
.badge-under-maint   { background: #f3e8fd; color: #7b1fa2; }          /* purple */
.badge-damaged       { background: #fce8e6; color: #c5221f; }          /* red    */
.badge-written-off   { background: #f1f3f4; color: #9aa0a6; text-decoration: line-through; } /* gray */

/* ── Overdue highlight ────────────────────────────────────────────────── */
tr.overdue td { background: #fff8e1; }

/* ── Responsive ───────────────────────────────────────────────────────── */
@media (max-width: 700px) {
  .sidebar { transform: translateX(-100%); }
  .sidebar.open { transform: none; }
  .main-wrapper { margin-left: 0; }
  .hamburger { display: block; }
  .content { padding: 16px; }
  .stat-grid { grid-template-columns: 1fr 1fr; }
}