/* ── Variables ─────────────────────────────────────────────────────────────── */
:root {
  /* Colors */
  --color-primary:       #0071BC;
  --color-primary-light: #e0f0fb;
  --color-primary-dark:  #005a96;
  --color-primary-ring:  rgba(0, 113, 188, 0.15);
  --color-surface:       #ffffff;
  --color-bg:            #f1f5f9;
  --color-border:        #e2e8f0;
  --color-border-light:  #f1f5f9;
  --color-text:          #0f172a;
  --color-text-muted:    #64748b;
  --color-text-light:    #94a3b8;
  --color-success:       #16a34a;
  --color-success-bg:    #dcfce7;
  --color-success-text:  #166534;
  --color-warning:       #d97706;
  --color-warning-bg:    #fef3c7;
  --color-warning-text:  #92400e;
  --color-danger:        #dc2626;
  --color-danger-bg:     #fee2e2;
  --color-danger-text:   #991b1b;
  --color-info-bg:       #dbeafe;
  --color-info-text:     #1e40af;

  /* Shadows */
  --shadow-sm:           0 1px 3px rgba(0, 0, 0, 0.05);
  --shadow-md:           0 4px 12px rgba(0, 0, 0, 0.08);
  --shadow-lg:           0 10px 30px rgba(0, 0, 0, 0.12);

  /* Border radii */
  --radius-sm:           6px;
  --radius-md:           8px;
  --radius-lg:           12px;

  /* Layout */
  --sidebar-width:       210px;
  --topbar-height:       52px;

  /* Typography */
  --font-family:         'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono:           'Fira Code', 'Cascadia Code', 'Consolas', monospace;
  --font-size-xs:        11px;
  --font-size-sm:        12px;
  --font-size-base:      13px;
  --font-size-md:        15px;
  --font-size-lg:        18px;
  --font-size-xl:        20px;
  --font-size-2xl:       24px;
  --font-size-3xl:       28px;

  /* Spacing scale */
  --space-1:             4px;
  --space-2:             8px;
  --space-3:             12px;
  --space-4:             16px;
  --space-5:             20px;
  --space-6:             24px;
  --space-8:             32px;
  --space-12:            48px;

  /* Transitions */
  --transition-fast:     150ms ease;
  --transition-base:     200ms ease;
  --transition-slow:     300ms ease;

  /* Z-index scale */
  --z-dropdown:          10;
  --z-sticky:            20;
  --z-modal-backdrop:    40;
  --z-modal:             50;
  --z-toast:             100;
  --z-sidebar:           110;

  /* Semantic */
  --modal-scrim:         rgba(0, 0, 0, 0.55);
  --color-overdue-bg:    #fffbeb;
  --color-sel-bar:       #312e81;
}

/* ── Dark mode tokens ───────────────────────────────────────────────────────── */
[data-theme="dark"] {
  --color-primary:       #3b9ede;
  --color-primary-light: #1e3a5f;
  --color-primary-dark:  #5ab0f0;
  --color-primary-ring:  rgba(59, 158, 222, 0.2);
  --color-surface:       #1e293b;
  --color-bg:            #0f172a;
  --color-border:        #334155;
  --color-border-light:  #1e293b;
  --color-text:          #f1f5f9;
  --color-text-muted:    #94a3b8;
  --color-text-light:    #64748b;
  --color-success-bg:    #052e16;
  --color-success-text:  #4ade80;
  --color-warning-bg:    #451a03;
  --color-warning-text:  #fbbf24;
  --color-danger-bg:     #450a0a;
  --color-danger-text:   #f87171;
  --color-info-bg:       #172554;
  --color-info-text:     #93c5fd;
  --shadow-sm:           0 1px 3px rgba(0, 0, 0, 0.3);
  --shadow-md:           0 4px 12px rgba(0, 0, 0, 0.4);
  --shadow-lg:           0 10px 30px rgba(0, 0, 0, 0.5);
  --modal-scrim:         rgba(0, 0, 0, 0.75);
  --color-overdue-bg:    #2d1f00;
  --color-sel-bar:       #312e81;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --color-primary:       #3b9ede;
    --color-primary-light: #1e3a5f;
    --color-primary-dark:  #5ab0f0;
    --color-primary-ring:  rgba(59, 158, 222, 0.2);
    --color-surface:       #1e293b;
    --color-bg:            #0f172a;
    --color-border:        #334155;
    --color-border-light:  #1e293b;
    --color-text:          #f1f5f9;
    --color-text-muted:    #94a3b8;
    --color-text-light:    #64748b;
    --color-success-bg:    #052e16;
    --color-success-text:  #4ade80;
    --color-warning-bg:    #451a03;
    --color-warning-text:  #fbbf24;
    --color-danger-bg:     #450a0a;
    --color-danger-text:   #f87171;
    --color-info-bg:       #172554;
    --color-info-text:     #93c5fd;
    --shadow-sm:           0 1px 3px rgba(0, 0, 0, 0.3);
    --shadow-md:           0 4px 12px rgba(0, 0, 0, 0.4);
    --shadow-lg:           0 10px 30px rgba(0, 0, 0, 0.5);
    --modal-scrim:         rgba(0, 0, 0, 0.75);
    --color-overdue-bg:    #2d1f00;
    --color-sel-bar:       #312e81;
  }
}

/* ── Reduced motion ─────────────────────────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

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

body {
  font-family: var(--font-family);
  background: var(--color-bg);
  color: var(--color-text);
  font-size: var(--font-size-md);
  line-height: 1.5;
}

a { color: var(--color-primary); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ── Utility classes ────────────────────────────────────────────────────────── */
.font-mono { font-family: var(--font-mono); }

.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

/* Skip link for accessibility */
.skip-link {
  position: absolute;
  top: -40px; left: 0;
  background: var(--color-primary);
  color: #fff;
  padding: 8px 16px;
  z-index: 9999;
  font-size: 13px;
  font-weight: 600;
  border-radius: 0 0 var(--radius-sm) 0;
  transition: top var(--transition-fast);
}
.skip-link:focus { top: 0; }

/* ── App layout ─────────────────────────────────────────────────────────────── */
.app-layout {
  display: flex;
  min-height: 100vh;
  min-height: 100dvh;
}

/* ── Sidebar ────────────────────────────────────────────────────────────────── */
.sidebar {
  width: var(--sidebar-width);
  background: var(--color-surface);
  border-right: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  position: fixed;
  top: 0; left: 0;
  height: 100vh;
  z-index: var(--z-sidebar);
  overflow-y: auto;
  transition: transform var(--transition-slow);
}

.sidebar-brand {
  padding: var(--space-4);
  border-bottom: 1px solid var(--color-border-light);
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}

.sidebar-logo {
  width: 32px; height: 32px;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.sidebar-logo img {
  width: 32px; height: 32px;
  object-fit: contain;
  flex-shrink: 0;
}

.sidebar-brand-text { font-size: var(--font-size-base); font-weight: 700; color: var(--color-text); }

.sidebar-nav { padding: var(--space-3) var(--space-2); flex: 1; }

.sidebar-group-label {
  font-size: 9px; color: var(--color-text-light);
  letter-spacing: 0.08em; font-weight: 600;
  padding: 0 8px; margin-bottom: var(--space-1); margin-top: var(--space-3);
  text-transform: uppercase;
}
.sidebar-group-label:first-child { margin-top: 0; }

.sidebar-link {
  display: flex; align-items: center; gap: var(--space-2);
  padding: 7px 10px; border-radius: var(--radius-sm);
  font-size: var(--font-size-base); color: var(--color-text-muted);
  text-decoration: none; margin-bottom: 2px;
  transition: background var(--transition-fast), color var(--transition-fast);
}
.sidebar-link:hover { background: var(--color-bg); color: var(--color-text); text-decoration: none; }
.sidebar-link.active { background: var(--color-primary-light); color: var(--color-primary-dark); font-weight: 600; }
.sidebar-link-icon { font-size: 14px; width: 18px; text-align: center; flex-shrink: 0; }

.sidebar-badge {
  margin-left: auto;
  background: var(--color-warning-bg); color: var(--color-warning-text);
  font-size: 9px; padding: 2px 6px; border-radius: 10px; font-weight: 600;
}
.sidebar-badge.danger { background: var(--color-danger-bg); color: var(--color-danger-text); }

.sidebar-footer {
  padding: 10px 12px;
  border-top: 1px solid var(--color-border);
  display: flex; align-items: center; gap: var(--space-2);
}

.sidebar-avatar {
  width: 28px; height: 28px;
  background: var(--color-primary); border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-size: 11px; font-weight: 700; flex-shrink: 0;
}

.sidebar-user-name { font-size: var(--font-size-sm); font-weight: 600; color: var(--color-text); }
.sidebar-user-role { font-size: 10px; color: var(--color-text-muted); }

.sidebar-overlay {
  display: block !important;
  position: fixed; inset: 0;
  background: rgba(0, 0, 0, 0.4);
  z-index: calc(var(--z-sidebar) - 1);
  transition: opacity var(--transition-base);
  opacity: 0;
  pointer-events: none;
  visibility: hidden;
}
.sidebar-overlay.open {
  opacity: 1;
  pointer-events: all;
  visibility: visible;
}

/* ── Main area ──────────────────────────────────────────────────────────────── */
.main-area { margin-left: var(--sidebar-width); flex: 1; min-width: 0; display: flex; flex-direction: column; }

/* ── Topbar (mobile only) ───────────────────────────────────────────────────── */
.topbar {
  display: none; align-items: center; gap: var(--space-3);
  height: var(--topbar-height); padding: 0 var(--space-4);
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  position: sticky; top: 0; z-index: var(--z-sticky);
}

.topbar-hamburger {
  background: none; border: none;
  font-size: 20px; color: var(--color-primary);
  cursor: pointer; padding: 0; line-height: 1;
}

.topbar-brand-logo {
  width: 24px; height: 24px;
  display: flex; align-items: center; justify-content: center;
}
.topbar-brand-logo img {
  width: 24px; height: 24px;
  object-fit: contain;
}

.topbar-title { font-size: 14px; font-weight: 700; color: var(--color-text); }

/* ── Toast ──────────────────────────────────────────────────────────────────── */
.toast-container {
  position: fixed; top: var(--space-4); right: var(--space-4);
  z-index: var(--z-toast);
  display: flex; flex-direction: column; gap: var(--space-2);
  max-width: 380px; width: calc(100vw - 32px);
  pointer-events: none;
}

.toast {
  display: flex; align-items: flex-start; gap: 10px;
  padding: 12px 14px; border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  background: var(--color-surface); border: 1px solid var(--color-border);
  animation: toast-in 0.2s ease;
  pointer-events: all;
}

@keyframes toast-in {
  from { opacity: 0; transform: translateX(20px); }
  to   { opacity: 1; transform: translateX(0); }
}

.toast span { flex: 1; font-size: var(--font-size-base); line-height: 1.4; color: var(--color-text); }

.toast-close {
  background: none; border: none; color: var(--color-text-light);
  cursor: pointer; font-size: 16px; line-height: 1; padding: 0; flex-shrink: 0;
}

.toast-success { border-left: 4px solid var(--color-success); }
.toast-error,
.toast-danger  { border-left: 4px solid var(--color-danger); }
.toast-warning { border-left: 4px solid var(--color-warning); }
.toast-info    { border-left: 4px solid var(--color-primary); }

/* ── Modal ──────────────────────────────────────────────────────────────────── */
.modal-overlay {
  position: fixed; inset: 0;
  background: var(--modal-scrim);
  z-index: var(--z-modal-backdrop);
  display: flex; align-items: center; justify-content: center; padding: var(--space-4);
  transition: opacity var(--transition-base);
}
.modal-overlay.hidden {
  opacity: 0;
  pointer-events: none;
  display: flex !important;
  visibility: hidden;
}

.modal {
  background: var(--color-surface); border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg); width: 100%; max-width: 460px; overflow: hidden;
  transform: scale(0.95);
  transition: transform var(--transition-base);
  z-index: var(--z-modal);
}
.modal-overlay:not(.hidden) .modal {
  transform: scale(1);
}

.modal-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: var(--space-4) var(--space-5); border-bottom: 1px solid var(--color-border);
}
.modal-header h3 { font-size: var(--font-size-md); font-weight: 700; color: var(--color-text); }
.modal-close-btn {
  background: none; border: none; color: var(--color-text-light);
  cursor: pointer; font-size: 18px; line-height: 1;
}

.modal-body   { padding: var(--space-5); }
.modal-footer {
  padding: 14px var(--space-5); border-top: 1px solid var(--color-border);
  display: flex; justify-content: flex-end; gap: var(--space-2);
}

/* ── Global selection bar ───────────────────────────────────────────────────── */
.global-sel-bar {
  display: flex; align-items: center; gap: 0.75rem;
  background: var(--color-sel-bar, #312e81); color: #fff;
  padding: 0.45rem 1.5rem; font-size: 0.875rem;
}
.global-sel-count { font-weight: 600; flex: 1; }
.global-sel-bar .btn-success   { background: #16a34a; color: #fff; border-color: #16a34a; }
.global-sel-bar .btn-secondary { background: transparent; border-color: #a5b4fc; color: #a5b4fc; }
.global-sel-bar .btn-secondary:hover { background: rgba(255,255,255,.1); }

/* ── Page content ───────────────────────────────────────────────────────────── */
.page-content { padding: var(--space-6) 28px; flex: 1; }

/* ── Page header ────────────────────────────────────────────────────────────── */
.page-header {
  display: flex; align-items: flex-start; justify-content: space-between;
  margin-bottom: var(--space-5); gap: var(--space-3); flex-wrap: wrap;
}
.page-header-left h1 { font-size: var(--font-size-xl); font-weight: 700; color: var(--color-text); }
.page-header-actions { display: flex; gap: var(--space-2); flex-shrink: 0; }

/* ── Breadcrumb ─────────────────────────────────────────────────────────────── */
.breadcrumb {
  display: flex; align-items: center; gap: 6px;
  font-size: var(--font-size-sm); color: var(--color-text-light); margin-bottom: var(--space-4);
}
.breadcrumb a { color: var(--color-text-muted); }
.breadcrumb a:hover { color: var(--color-text); }
.breadcrumb-sep { color: var(--color-border); }
.breadcrumb-current { color: var(--color-text-muted); font-weight: 500; }

/* ── Stats grid ─────────────────────────────────────────────────────────────── */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: var(--space-3); margin-bottom: var(--space-5);
}

.stat-card {
  background: var(--color-surface); border: 1px solid var(--color-border);
  border-radius: var(--radius-md); padding: var(--space-4); box-shadow: var(--shadow-sm);
}

.stat-value {
  font-size: var(--font-size-2xl); font-weight: 700; color: var(--color-text);
  display: block; font-variant-numeric: tabular-nums;
}
.stat-label { font-size: 10px; color: var(--color-text-muted); text-transform: uppercase; letter-spacing: 0.06em; margin-bottom: var(--space-1); display: block; }
.stat-sub   { font-size: 11px; color: var(--color-text-muted); margin-top: var(--space-1); }
.stat-sub.positive { color: var(--color-success); }
.stat-sub.warning  { color: var(--color-warning); }
.stat-sub.danger   { color: var(--color-danger); }

/* ── Buttons ────────────────────────────────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 7px 14px; border-radius: var(--radius-sm);
  font-size: var(--font-size-base); font-weight: 500; text-decoration: none;
  border: 1px solid transparent; cursor: pointer;
  transition: opacity var(--transition-fast), background var(--transition-fast), transform var(--transition-fast);
  white-space: nowrap;
}
.btn:hover { opacity: 0.88; text-decoration: none; }
.btn:active { transform: scale(0.97); }
.btn:disabled, .btn[disabled] { opacity: 0.42; cursor: not-allowed; pointer-events: none; }
.btn:focus-visible { outline: 2px solid var(--color-primary); outline-offset: 2px; }

.btn-primary   { background: var(--color-primary); color: #fff; border-color: var(--color-primary); }
.btn-secondary { background: var(--color-surface); color: var(--color-text-muted); border-color: var(--color-border); }
.btn-secondary:hover { background: var(--color-bg); }
.btn-success   { background: #16a34a; color: #fff; border-color: #16a34a; }
.btn-danger    { background: var(--color-danger); color: #fff; border-color: var(--color-danger); }
.btn-warning   { background: var(--color-warning); color: #fff; border-color: var(--color-warning); }
.btn-sm        { padding: 4px 10px; font-size: var(--font-size-sm); }
.btn-lg        { padding: 10px 20px; font-size: var(--font-size-md); }

/* Loading state */
.btn.loading { position: relative; color: transparent !important; pointer-events: none; }
.btn.loading::after {
  content: '';
  position: absolute; width: 14px; height: 14px;
  border: 2px solid rgba(255,255,255,0.4); border-top-color: #fff;
  border-radius: 50%; animation: spin 0.6s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ── Cards ──────────────────────────────────────────────────────────────────── */
.card {
  background: var(--color-surface); border: 1px solid var(--color-border);
  border-radius: var(--radius-md); box-shadow: var(--shadow-sm);
  padding: var(--space-5); margin-bottom: var(--space-4);
}
.card-title { font-size: 14px; font-weight: 600; margin-bottom: var(--space-3); color: var(--color-text); }

/* ── Tables ─────────────────────────────────────────────────────────────────── */
.table-wrap {
  position: relative; overflow-x: auto;
  background: var(--color-surface); border: 1px solid var(--color-border);
  border-radius: var(--radius-md); box-shadow: var(--shadow-sm);
}

table { width: 100%; border-collapse: collapse; font-size: var(--font-size-base); }
th, td { padding: 9px 14px; text-align: left; border-bottom: 1px solid var(--color-border-light); }
th {
  background: var(--color-bg); font-weight: 600; font-size: 11px;
  color: var(--color-text-muted); text-transform: uppercase;
  letter-spacing: 0.05em; border-bottom: 1px solid var(--color-border);
  cursor: default;
}
tr { transition: background var(--transition-fast); }
tr:last-child td { border-bottom: none; }
tr:hover td { background: var(--color-bg); }

/* Mobile card list replaces table at 480px */
.card-list { display: none; }

/* ── Filter bar ─────────────────────────────────────────────────────────────── */
.filter-bar {
  display: flex; gap: var(--space-2); align-items: center; flex-wrap: wrap;
  padding: 10px 14px; background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  border-radius: var(--radius-md) var(--radius-md) 0 0;
}

/* ── Forms ──────────────────────────────────────────────────────────────────── */
.form-group { margin-bottom: 14px; }

.form-group label {
  display: block; font-size: var(--font-size-sm); font-weight: 600;
  color: var(--color-text); margin-bottom: 5px;
}

.form-control {
  width: 100%; padding: 7px 10px;
  border: 1px solid var(--color-border); border-radius: var(--radius-sm);
  font-size: var(--font-size-base); background: var(--color-surface); color: var(--color-text);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}
.form-control:focus {
  outline: none; border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-ring);
}
.form-control:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 1px;
}
textarea.form-control { min-height: 80px; resize: vertical; }

.form-error {
  display: flex; align-items: center; gap: var(--space-1);
  font-size: var(--font-size-xs); color: var(--color-danger); margin-top: var(--space-1);
}
.form-hint {
  font-size: var(--font-size-xs); color: var(--color-text-muted); margin-top: var(--space-1);
  line-height: 1.4;
}
.form-control.is-invalid { border-color: var(--color-danger); }
.form-group.has-error .form-control {
  border-color: var(--color-danger);
  background: var(--color-danger-bg);
}
.form-required-note { font-size: var(--font-size-xs); color: var(--color-text-muted); margin-top: var(--space-4); }

/* Input groups for inline add-ons */
.input-group {
  display: flex; align-items: stretch;
}
.input-group .form-control {
  flex: 1; border-radius: var(--radius-sm) 0 0 var(--radius-sm);
}
.input-group .input-group-addon {
  display: flex; align-items: center; padding: 7px 10px;
  background: var(--color-bg); border: 1px solid var(--color-border);
  border-left: none; border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-size: var(--font-size-base); color: var(--color-text-muted);
  white-space: nowrap;
}
.input-group .btn {
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

/* ── Badges ─────────────────────────────────────────────────────────────────── */
.badge {
  display: inline-flex; align-items: center; gap: var(--space-1);
  padding: 3px 8px; border-radius: 12px;
  font-size: 11px; font-weight: 500;
}

.badge-available       { background: var(--color-success-bg); color: var(--color-success-text); }
.badge-sold            { background: #e2e8f0; color: #475569; }
.badge-pending         { background: var(--color-warning-bg); color: var(--color-warning-text); }
.badge-pending-pricing { background: #fed7aa; color: #9a3412; }
.badge-unverified      { background: var(--color-info-bg); color: var(--color-info-text); }
.badge-reserved        { background: #dbeafe; color: #1e40af; }
.badge-confirmed       { background: var(--color-success-bg); color: var(--color-success-text); }
.badge-cancelled       { background: #e2e8f0; color: #475569; }
.badge-defective       { background: var(--color-danger-bg); color: var(--color-danger-text); }
.badge-in-repair       { background: var(--color-warning-bg); color: var(--color-warning-text); }
.badge-open            { background: var(--color-danger-bg); color: var(--color-danger-text); }
.badge-scrap           { background: #e2e8f0; color: #475569; }
.badge-closed          { background: #e2e8f0; color: #475569; }

.badge-success { background: var(--color-success-bg); color: var(--color-success-text); }
.badge-warning { background: var(--color-warning-bg); color: var(--color-warning-text); }
.badge-danger  { background: var(--color-danger-bg);  color: var(--color-danger-text); }
.badge-info    { background: var(--color-info-bg);    color: var(--color-info-text); }

/* ── Empty states ───────────────────────────────────────────────────────────── */
.empty-state { text-align: center; padding: var(--space-12) var(--space-6); color: var(--color-text-muted); }
.empty-state-icon {
  width: 48px; height: 48px; margin: 0 auto var(--space-4); opacity: 0.4;
  font-size: 36px; display: flex; align-items: center; justify-content: center;
}
.empty-state h3 { font-size: var(--font-size-md); font-weight: 600; color: var(--color-text); margin-bottom: var(--space-2); }
.empty-state p  { font-size: var(--font-size-base); line-height: 1.6; max-width: 320px; margin: 0 auto var(--space-5); }

/* ── Pagination ─────────────────────────────────────────────────────────────── */
.pagination {
  display: flex; align-items: center; gap: var(--space-1);
  padding: 10px 14px; border-top: 1px solid var(--color-border);
  background: var(--color-bg);
}
.pagination-info { font-size: 11px; color: var(--color-text-muted); flex: 1; }

.page-btn {
  padding: 4px 10px; border: 1px solid var(--color-border);
  border-radius: var(--radius-sm); background: var(--color-surface);
  color: var(--color-text-muted); font-size: var(--font-size-sm); cursor: pointer;
  text-decoration: none; display: inline-block;
  transition: background var(--transition-fast);
}
.page-btn:hover { background: var(--color-bg); text-decoration: none; }
.page-btn.active { background: var(--color-primary); color: #fff; border-color: var(--color-primary); }
.page-btn:disabled { opacity: 0.4; cursor: not-allowed; }

/* ── Upload area ────────────────────────────────────────────────────────────── */
.upload-area {
  border: 2px dashed var(--color-border); border-radius: var(--radius-md);
  padding: 40px; text-align: center; cursor: pointer;
  transition: border-color var(--transition-base), background var(--transition-base);
}
.upload-area:hover { border-color: var(--color-primary); background: var(--color-primary-light); }
.upload-area p { font-size: var(--font-size-base); color: var(--color-text-muted); margin-top: var(--space-2); }

/* ── Overdue row ────────────────────────────────────────────────────────────── */
.row-overdue td { background: var(--color-overdue-bg) !important; }

/* ── Reports ────────────────────────────────────────────────────────────────── */
.report-filter-row {
  display: flex; align-items: center; gap: 6px; flex-wrap: wrap;
}
.report-period-label {
  margin-left: auto; font-size: var(--font-size-base); color: var(--color-text-muted);
  font-weight: 500;
}
.report-custom-range { display: none; margin-top: 10px; }
.report-custom-range.show { display: flex; }
.btn-outline {
  background: var(--color-surface); border: 1px solid var(--color-border);
  color: var(--color-text-muted); padding: 5px 12px; border-radius: var(--radius-sm);
  font-size: var(--font-size-sm); font-weight: 500; cursor: pointer; text-decoration: none;
  display: inline-block; transition: all var(--transition-fast);
}
.btn-outline:hover { border-color: var(--color-primary); color: var(--color-primary); text-decoration: none; }
.btn-outline.active {
  background: var(--color-primary); border-color: var(--color-primary);
  color: #fff;
}

/* KPI cards */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin-bottom: var(--space-5);
}
.kpi-card {
  background: var(--color-surface);
  border-radius: var(--radius-md);
  padding: 20px 22px;
  border: 1px solid var(--color-border);
  position: relative;
  overflow: hidden;
}
.kpi-card::before {
  content: '';
  position: absolute; top: 0; left: 0; bottom: 0;
  width: 4px;
  background: var(--color-border);
}
.kpi-card.kpi-profit::before  { background: #198754; }
.kpi-card.kpi-margin::before  { background: var(--color-primary); }
.kpi-card.kpi-units::before   { background: #6366f1; }
.kpi-card.kpi-sales-count::before { background: #f59e0b; }
.kpi-card.kpi-inventory::before   { background: #64748b; }
.kpi-icon {
  font-size: 20px; margin-bottom: var(--space-2); display: block;
}
.kpi-value {
  display: block;
  font-size: 26px; font-weight: 800; letter-spacing: -.02em;
  color: var(--color-text); line-height: 1;
  margin-bottom: 6px;
  font-variant-numeric: tabular-nums;
}
.kpi-label {
  font-size: 11px; font-weight: 600; text-transform: uppercase;
  letter-spacing: .04em; color: var(--color-text-muted);
}

/* Mini stat cards (inventory summary) */
.report-mini-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-3);
}
.report-mini-card {
  background: var(--color-bg);
  border-radius: var(--radius-sm);
  padding: 16px 18px;
  text-align: center;
}
.report-mini-value {
  font-size: 22px; font-weight: 800; color: var(--color-text);
  margin-bottom: var(--space-1); font-variant-numeric: tabular-nums;
}
.report-mini-label {
  font-size: 11px; font-weight: 600; text-transform: uppercase;
  letter-spacing: .04em; color: var(--color-text-muted);
}

/* Aging distribution badges */
.age-fresh  { background: #d1fae5; color: #065f46; }
.age-normal { background: #dbeafe; color: #1e40af; }
.age-slow   { background: #fef3c7; color: #92400e; }
.age-dead   { background: #fee2e2; color: #991b1b; }

/* Aging bar chart */
.aging-bar-row {
  display: flex; align-items: center; gap: 10px;
  padding: var(--space-2) 0; border-bottom: 1px solid var(--color-border-light);
}
.aging-bar-row:last-child { border-bottom: none; }
.aging-bar-label { font-size: var(--font-size-sm); font-weight: 600; color: var(--color-text); width: 60px; flex-shrink: 0; }
.aging-bar-range { font-size: 10px; color: var(--color-text-muted); width: 80px; flex-shrink: 0; }
.aging-bar-track { flex: 1; height: 10px; background: var(--color-border-light); border-radius: 99px; overflow: hidden; }
.aging-bar-fill  { height: 100%; border-radius: 99px; transition: width 0.4s ease; }
.aging-bar-fill.fresh  { background: #10b981; }
.aging-bar-fill.normal { background: var(--color-primary); }
.aging-bar-fill.slow   { background: #f59e0b; }
.aging-bar-fill.dead   { background: #ef4444; }
.aging-bar-count { font-size: var(--font-size-base); font-weight: 700; color: var(--color-text); width: 28px; text-align: right; flex-shrink: 0; font-variant-numeric: tabular-nums; }

/* Customer balance */
.report-balance-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 14px;
}
.report-balance-card {
  border-radius: var(--radius-sm);
  padding: 18px 20px;
  background: var(--color-bg);
}
.report-balance-card h3 {
  font-size: 11px; font-weight: 700; text-transform: uppercase;
  letter-spacing: .04em; color: var(--color-text-muted);
  margin: 0 0 var(--space-2);
}
.report-balance-amount {
  font-size: var(--font-size-3xl); font-weight: 800; letter-spacing: -.02em;
  margin-bottom: var(--space-1); font-variant-numeric: tabular-nums;
}
.report-balance-count { font-size: var(--font-size-sm); color: var(--color-text-muted); }

/* Top models bar chart column */
.model-bar-cell { min-width: 100px; }
.model-bar-track { height: 6px; background: var(--color-border-light); border-radius: 99px; overflow: hidden; margin-top: var(--space-1); }
.model-bar-fill  { height: 100%; border-radius: 99px; background: var(--color-primary); }

@media (max-width: 768px) {
  .kpi-grid { grid-template-columns: repeat(2, 1fr); }
  .report-mini-grid { grid-template-columns: 1fr 1fr; }
  .report-balance-grid { grid-template-columns: 1fr; }
}

/* ── Quick actions ──────────────────────────────────────────────────────────── */
.quick-actions { display: flex; gap: .75rem; flex-wrap: wrap; margin-bottom: 1.5rem; }

/* ── Dashboard ──────────────────────────────────────────────────────────────── */

/* Privacy mode */
.sensitive { transition: filter var(--transition-slow); }
.privacy-mode .sensitive { filter: blur(7px); user-select: none; }

/* Greeting bar */
.dash-greeting {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 1.5rem;
}
.dash-greeting-text h2 { font-size: 1.2rem; font-weight: 600; color: var(--color-text); }
.dash-greeting-text p  { font-size: .82rem; color: var(--color-text-muted); margin-top: 2px; }
.dash-privacy-btn {
  display: flex; align-items: center; gap: 6px; padding: 6px 14px;
  background: var(--color-surface); border: 1px solid var(--color-border);
  border-radius: var(--radius-sm); font-size: var(--font-size-sm); font-weight: 500;
  color: var(--color-text-muted); cursor: pointer; transition: all var(--transition-fast);
  white-space: nowrap; flex-shrink: 0;
}
.dash-privacy-btn:hover { border-color: var(--color-primary); color: var(--color-primary); }

/* KPI grid */
.dash-kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(170px, 1fr));
  gap: 14px; margin-bottom: 1.5rem;
}
.dash-kpi-card {
  background: var(--color-surface); border: 1px solid var(--color-border);
  border-radius: var(--radius-md); padding: 18px 20px;
  box-shadow: var(--shadow-sm); border-left: 3px solid var(--color-border);
}
.dash-kpi-card.accent-blue  { border-left-color: var(--color-primary); }
.dash-kpi-card.accent-green { border-left-color: var(--color-success); }
.dash-kpi-card.accent-amber { border-left-color: var(--color-warning); }
.dash-kpi-card.accent-red   { border-left-color: var(--color-danger); }
.dash-kpi-value {
  font-size: 1.55rem; font-weight: 700; color: var(--color-text);
  line-height: 1.1; margin-bottom: 5px;
  font-variant-numeric: tabular-nums;
}
.dash-kpi-label {
  font-size: 11px; font-weight: 600; color: var(--color-text-muted);
  text-transform: uppercase; letter-spacing: 0.5px;
}
.dash-kpi-sub { font-size: 11px; color: var(--color-text-light); margin-top: 3px; }

/* Two-column layout */
.dash-two-col {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: var(--space-4); margin-bottom: 1.5rem;
}

/* Chart card */
.dash-chart-card {
  background: var(--color-surface); border: 1px solid var(--color-border);
  border-radius: var(--radius-md); padding: var(--space-5);
  box-shadow: var(--shadow-sm);
}
.dash-chart-title {
  font-size: var(--font-size-sm); font-weight: 600; color: var(--color-text);
  text-transform: uppercase; letter-spacing: .4px; margin-bottom: 14px;
}

/* Status bars */
.dash-status-list { display: flex; flex-direction: column; gap: 9px; margin-top: var(--space-1); }
.dash-status-row  { display: flex; align-items: center; gap: 10px; }
.dash-status-label {
  font-size: var(--font-size-sm); color: var(--color-text-muted); width: 74px;
  flex-shrink: 0; text-transform: capitalize;
}
.dash-status-bar {
  flex: 1; height: 7px; background: var(--color-border-light);
  border-radius: 99px; overflow: hidden;
}
.dash-status-fill { height: 100%; border-radius: 99px; transition: width 0.5s ease; }
.dash-status-count {
  font-size: var(--font-size-sm); font-weight: 600; color: var(--color-text);
  width: 24px; text-align: right; flex-shrink: 0;
  font-variant-numeric: tabular-nums;
}

/* Section header */
.dash-section-hd {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 10px;
}
.dash-section-title { font-size: var(--font-size-sm); font-weight: 600; color: var(--color-text); text-transform: uppercase; letter-spacing: .4px; }

/* Activity table */
.dash-activity {
  background: var(--color-surface); border: 1px solid var(--color-border);
  border-radius: var(--radius-md); overflow: hidden;
  box-shadow: var(--shadow-sm);
}
.dash-activity table { width: 100%; border-collapse: collapse; }
.dash-activity th {
  font-size: 10px; font-weight: 600; color: var(--color-text-muted);
  text-transform: uppercase; letter-spacing: .4px;
  padding: 9px 14px; background: var(--color-bg);
  border-bottom: 1px solid var(--color-border); text-align: left;
}
.dash-activity td {
  padding: 9px 14px; font-size: 12.5px; color: var(--color-text);
  border-bottom: 1px solid var(--color-border-light);
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.dash-activity tr:last-child td { border-bottom: none; }
.dash-activity tr:hover td { background: var(--color-bg); }
.dash-activity .td-mono {
  font-family: var(--font-mono); font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}
.dash-activity .td-amount {
  text-align: right; font-weight: 600; font-variant-numeric: tabular-nums;
}

/* ── Mono / numeric display elements ────────────────────────────────────────── */
.td-mono {
  font-family: var(--font-mono); font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}
.td-amount { font-variant-numeric: tabular-nums; }

/* ── Form grids ─────────────────────────────────────────────────────────────── */
.form-grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.form-grid-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 14px; }

/* ── Verification-specific ──────────────────────────────────────────────────── */
.scan-result { padding: 1rem; border-radius: var(--radius-sm); margin: .5rem 0; font-size: .9rem; }
.scan-result.matched          { background: #d4edda; color: #155724; }
.scan-result.extra            { background: #fff3cd; color: #856404; }
.scan-result.duplicate        { background: #f8d7da; color: #721c24; }
.scan-result.already_verified { background: #d1ecf1; color: #0c5460; }

/* Scan feedback strip (verification batch page) */
.scan-feedback {
  min-height: 36px; margin-top: 10px; border-radius: var(--radius-sm);
  padding: 8px 12px; font-size: 13px; font-weight: 500;
  display: flex; align-items: center; transition: background 0.15s, color 0.15s;
}
.scan-feedback-empty    { background: transparent; color: transparent; }
.scan-feedback-matched  { background: var(--color-success-bg); color: var(--color-success-text); }
.scan-feedback-already  { background: var(--color-info-bg);    color: var(--color-info-text); }
.scan-feedback-duplicate{ background: var(--color-warning-bg); color: var(--color-warning-text); }
.scan-feedback-extra    { background: var(--color-danger-bg);  color: var(--color-danger-text); }

/* Verification progress bar */
.v-progress-wrap {
  height: 6px; background: var(--color-border-light); border-radius: 99px;
  overflow: hidden; margin-bottom: 20px;
}
.v-progress-bar {
  height: 100%; background: var(--color-success); border-radius: 99px;
  transition: width 0.5s ease;
}

/* Scan input focus highlight */
.v-scan-input { font-size: 15px; padding: 10px 14px; }

/* Missing IMEI hint banner */
.v-missing-hint {
  display: flex; align-items: flex-start; gap: 10px;
  background: var(--color-warning-bg); color: var(--color-warning-text);
  border: 1px solid var(--color-warning); border-radius: var(--radius-md);
  padding: 10px 14px; margin-bottom: 16px; font-size: 13px; line-height: 1.5;
  transition: opacity 0.2s;
}
.v-missing-hint-hidden { display: none; }
.v-missing-hint-icon { font-size: 15px; flex-shrink: 0; margin-top: 1px; }
.v-missing-hint strong { font-family: var(--font-mono); font-size: 12px; letter-spacing: 0.04em; }

/* ── Skeleton / loading states ──────────────────────────────────────────────── */
.skeleton {
  background: linear-gradient(
    90deg,
    var(--color-border) 25%,
    var(--color-border-light) 50%,
    var(--color-border) 75%
  );
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--radius-sm);
}
@keyframes shimmer {
  0%   { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}
.skeleton-text  { height: 12px; margin-bottom: var(--space-2); }
.skeleton-title { height: 20px; width: 60%; margin-bottom: var(--space-3); }
.skeleton-card  {
  padding: var(--space-5); border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}

/* ── Responsive ─────────────────────────────────────────────────────────────── */
@media (max-width: 768px) {
  .sidebar { transform: translateX(-100%); }
  .sidebar.open { transform: translateX(0); }
  .main-area { margin-left: 0; }
  .topbar { display: flex; }
  .page-content { padding: var(--space-4); }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .page-header { flex-direction: column; align-items: flex-start; }
  .dash-two-col { grid-template-columns: 1fr; }
  .dash-kpi-grid { grid-template-columns: repeat(2, 1fr); }
  .dash-greeting { flex-direction: column; align-items: flex-start; gap: 10px; }
}

@media (max-width: 480px) {
  .table-wrap table { display: none; }
  .card-list { display: flex; flex-direction: column; }
  .card-list-item {
    padding: 12px 14px; border-bottom: 1px solid var(--color-border-light);
    background: var(--color-surface);
  }
  .card-list-item:last-child { border-bottom: none; }
  .card-list-item-title { font-size: var(--font-size-base); font-weight: 600; color: var(--color-text); margin-bottom: var(--space-1); }
  .card-list-item-sub   { font-size: 11px; color: var(--color-text-muted); }
  .card-list-item-row   { display: flex; justify-content: space-between; align-items: center; margin-top: 6px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: var(--space-2); }
  .toast-container { right: var(--space-2); }
  .filter-bar { flex-direction: column; align-items: stretch; }
  .form-grid-2, .form-grid-3 { grid-template-columns: 1fr; }
}