/* ==========================================================================
   Claritas Lab — Professional Flat Theme (GitHub/GitLab inspired)
   Accent: #277B6B (teal-green), used sparingly on interactive elements only
   ========================================================================== */

/* --- CSS Custom Properties (Light Mode) --- */
:root,
[data-theme="light"] {
  --accent:          #277B6B;
  --accent-hover:    #1f6356;
  --accent-subtle:   #eaf3f1;
  --accent-emphasis: #277B6B;

  --bg-body:         #f6f8fa;
  --bg-surface:      #ffffff;
  --bg-surface-hover:#f3f4f6;
  --bg-input:        #ffffff;

  --text-primary:    #24292f;
  --text-secondary:  #57606a;
  --text-muted:      #6e7781;

  --border-color:    #d0d7de;
  --border-subtle:   #eaeef2;

  --shadow-sm:       0 1px 3px rgba(31,35,40,0.12);
  --shadow-md:       0 3px 6px rgba(31,35,40,0.1);

  --table-header-bg: #f6f8fa;
  --table-hover-bg:  #f6f8fa;
  --table-border:    #d0d7de;

  --alert-success-bg:  #dafbe1;
  --alert-success-fg:  #1a7f37;
  --alert-success-bd:  #aceebb;
  --alert-info-bg:     #ddf4ff;
  --alert-info-fg:     #0550ae;
  --alert-info-bd:     #54aeff;
  --alert-danger-bg:   #ffebe9;
  --alert-danger-fg:   #cf222e;
  --alert-danger-bd:   #ff8182;
  --alert-warning-bg:  #fff8c5;
  --alert-warning-fg:  #9a6700;
  --alert-warning-bd:  #d4a72c;

  --footer-bg:       #f6f8fa;
  --footer-text:     #6e7781;

  --dropdown-bg:     #ffffff;
  --dropdown-border: #d0d7de;

  /* kept for chat bubble compatibility */
  --brand-teal:      #277B6B;
  --brand-teal-hover:#1f6356;
  --brand-green:     #277B6B;
  --brand-teal-light:#eaf3f1;
  --brand-blue:      #0550ae;
  --brand-dark:      #24292f;
}

/* --- Dark Mode --- */
[data-theme="dark"] {
  --accent:          #7ab8ad;
  --accent-hover:    #8cc7bc;
  --accent-subtle:   #0d1f1d;
  --accent-emphasis: #64A195;

  --bg-body:         #0d1117;
  --bg-surface:      #161b22;
  --bg-surface-hover:#1c2128;
  --bg-input:        #0d1117;

  --text-primary:    #e6edf3;
  --text-secondary:  #8b949e;
  --text-muted:      #6e7781;

  --border-color:    #30363d;
  --border-subtle:   #21262d;

  --shadow-sm:       0 1px 3px rgba(1,4,9,0.4);
  --shadow-md:       0 3px 6px rgba(1,4,9,0.35);

  --table-header-bg: #161b22;
  --table-hover-bg:  #1c2128;
  --table-border:    #30363d;

  --alert-success-bg:  #0d1f1d;
  --alert-success-fg:  #7ab8ad;
  --alert-success-bd:  #2a5e58;
  --alert-info-bg:     #051d4d;
  --alert-info-fg:     #58a6ff;
  --alert-info-bd:     #1f6feb;
  --alert-danger-bg:   #2d0f0f;
  --alert-danger-fg:   #f85149;
  --alert-danger-bd:   #b91c1c;
  --alert-warning-bg:  #271d00;
  --alert-warning-fg:  #d29922;
  --alert-warning-bd:  #9e6a03;

  --footer-bg:       #161b22;
  --footer-text:     #6e7781;

  --dropdown-bg:     #161b22;
  --dropdown-border: #30363d;

  --brand-teal:      #7ab8ad;
  --brand-teal-hover:#8cc7bc;
  --brand-green:     #7ab8ad;
  --brand-teal-light:#0d1f1d;
  --brand-blue:      #58a6ff;
  --brand-dark:      #e6edf3;
}

/* ==========================================================================
   Base
   ========================================================================== */

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Noto Sans', Helvetica, Arial, sans-serif;
  font-size: 14px;
  line-height: 1.5;
  color: var(--text-primary);
  background-color: var(--bg-body);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
}

/* Remove mesh gradient orbs — plain background */
.mesh-gradient,
.mesh-orb-1,
.mesh-orb-2 {
  display: none;
}

.main-content {
  flex: 1;
}

h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  color: var(--text-primary);
  letter-spacing: -0.01em;
}

a {
  color: var(--accent);
}

a:hover {
  color: var(--accent-hover);
}

/* ==========================================================================
   Top accent bar — single solid line
   ========================================================================== */
.brand-accent-bar {
  height: 3px;
  background: var(--accent);
  position: relative;
  z-index: 1100;
}

/* ==========================================================================
   Navbar
   ========================================================================== */
.navbar-brand-custom {
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
  padding-top: 0.5rem;
  padding-bottom: 0.5rem;
  position: relative;
  z-index: 1050;
}

.navbar-brand-custom > .container {
  align-items: center;
}

.navbar-brand-custom .navbar-brand {
  padding-top: 0;
  padding-bottom: 0;
  margin-right: 1.5rem;
}

.navbar-brand-custom .navbar-brand img {
  height: 30px;
  width: auto;
  display: block;
}

.navbar-brand-custom .navbar-collapse {
  align-items: center;
}

.navbar-brand-custom .navbar-nav {
  align-items: center;
}

.navbar-brand-custom .nav-link {
  color: var(--text-primary) !important;
  font-weight: 500;
  font-size: 0.875rem;
  padding: 0.35rem 0.75rem !important;
  border-radius: 6px;
  transition: background-color 0.15s, color 0.15s;
  white-space: nowrap;
}

.navbar-brand-custom .nav-link:hover,
.navbar-brand-custom .nav-link:focus {
  color: var(--text-primary) !important;
  background-color: var(--bg-surface-hover);
}

.navbar-brand-custom .nav-link.active {
  color: var(--accent) !important;
  background-color: var(--accent-subtle);
}

.navbar-brand-custom .dropdown-menu {
  background: var(--dropdown-bg);
  border: 1px solid var(--dropdown-border);
  border-radius: 8px;
  box-shadow: var(--shadow-md);
  padding: 0.25rem;
  margin-top: 0.25rem;
  min-width: 200px;
}

.navbar-brand-custom .dropdown-item {
  font-size: 0.875rem;
  padding: 0.4rem 0.75rem;
  border-radius: 6px;
  color: var(--text-primary);
  transition: background-color 0.12s;
}

.navbar-brand-custom .dropdown-item:hover {
  background-color: var(--bg-surface-hover);
  color: var(--text-primary);
}

.navbar-brand-custom .dropdown-header {
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  padding: 0.35rem 0.75rem 0.2rem;
}

.navbar-brand-custom .dropdown-divider {
  border-color: var(--border-color);
  margin: 0.2rem 0;
}

.navbar-brand-custom .navbar-toggler {
  border-color: var(--border-color);
  border-radius: 6px;
}

.navbar-brand-custom .navbar-toggler-icon {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='%2357606a' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}

[data-theme="dark"] .navbar-brand-custom .navbar-toggler-icon {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='%238b949e' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}

[data-theme="dark"] .navbar-brand-custom .navbar-brand img {
  filter: brightness(1.2);
}

.nav-user-info {
  color: var(--text-secondary);
  font-weight: 500;
  font-size: 0.875rem;
  display: inline-flex;
  align-items: center;
}

.btn-nav-logout {
  font-size: 0.8rem;
  padding: 0.35rem 0.75rem;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  color: var(--text-secondary);
  background: var(--bg-surface);
  transition: border-color 0.15s, color 0.15s, background-color 0.15s;
  text-decoration: none;
  cursor: pointer;
  font-family: inherit;
  line-height: 1.5;
  white-space: nowrap;
}

.btn-nav-logout:hover {
  border-color: #cf222e;
  color: #cf222e;
  background: #ffebe9;
}

[data-theme="dark"] .btn-nav-logout:hover {
  border-color: #f85149;
  color: #f85149;
  background: #2d0f0f;
}


/* --- Theme Toggle --- */
.btn-theme-toggle {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  color: var(--text-secondary);
  padding: 0.35rem 0.5rem;
  cursor: pointer;
  font-size: 1rem;
  line-height: 1;
  transition: background-color 0.15s, border-color 0.15s;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.btn-theme-toggle:hover {
  background-color: var(--bg-surface-hover);
  border-color: var(--border-color);
  color: var(--text-primary);
}

[data-theme="dark"] .theme-icon-dark  { display: none; }
[data-theme="dark"] .theme-icon-light { display: inline; }
[data-theme="light"] .theme-icon-dark,
:root .theme-icon-dark                { display: inline; }
[data-theme="light"] .theme-icon-light,
:root .theme-icon-light               { display: none; }

/* ==========================================================================
   Buttons
   ========================================================================== */
.btn-brand {
  background-color: var(--accent);
  border: 1px solid var(--accent-hover);
  color: #ffffff;
  font-weight: 500;
  border-radius: 6px;
  padding: 0.4rem 1rem;
  transition: background-color 0.15s, border-color 0.15s;
}

.btn-brand:hover,
.btn-brand:focus {
  background-color: var(--accent-hover);
  border-color: var(--accent-hover);
  color: #ffffff;
}

.btn-brand:active {
  background-color: var(--accent-hover);
  color: #ffffff;
}

[data-theme="dark"] .btn-brand,
[data-theme="dark"] .btn-brand:hover,
[data-theme="dark"] .btn-brand:focus,
[data-theme="dark"] .btn-brand:active {
  color: #0d1117;
}

.btn-outline-brand {
  border: 1px solid var(--accent);
  color: var(--accent);
  font-weight: 500;
  border-radius: 6px;
  padding: 0.4rem 1rem;
  background: transparent;
  transition: background-color 0.15s, color 0.15s;
}

.btn-outline-brand:hover,
.btn-outline-brand:focus {
  background-color: var(--accent);
  border-color: var(--accent);
  color: #ffffff;
}

[data-theme="dark"] .btn-outline-brand:hover,
[data-theme="dark"] .btn-outline-brand:focus {
  color: #0d1117;
}

.btn-outline-teal {
  border: 1px solid var(--accent);
  color: var(--accent);
  font-weight: 500;
  border-radius: 6px;
  background: transparent;
  transition: background-color 0.15s, color 0.15s;
}

.btn-outline-teal:hover,
.btn-outline-teal:focus {
  background-color: var(--accent);
  border-color: var(--accent);
  color: #ffffff;
}

[data-theme="dark"] .btn-outline-teal:hover,
[data-theme="dark"] .btn-outline-teal:focus {
  color: #0d1117;
}

.btn-outline-blue {
  border: 1px solid var(--brand-blue);
  color: var(--brand-blue);
  font-weight: 500;
  border-radius: 6px;
  background: transparent;
  transition: background-color 0.15s, color 0.15s;
}

.btn-outline-blue:hover,
.btn-outline-blue:focus {
  background-color: var(--brand-blue);
  border-color: var(--brand-blue);
  color: #ffffff;
}

[data-theme="dark"] .btn-outline-blue:hover,
[data-theme="dark"] .btn-outline-blue:focus {
  color: #0d1117;
}

.btn-outline-purple {
  border: 1px solid #7c5cbf;
  color: #7c5cbf;
  font-weight: 500;
  border-radius: 6px;
  background: transparent;
  transition: background-color 0.15s, color 0.15s;
}

.btn-outline-purple:hover,
.btn-outline-purple:focus {
  background-color: #7c5cbf;
  border-color: #7c5cbf;
  color: #ffffff;
}

[data-theme="dark"] .btn-outline-purple {
  border-color: #a788e0;
  color: #a788e0;
}

[data-theme="dark"] .btn-outline-purple:hover,
[data-theme="dark"] .btn-outline-purple:focus {
  background-color: #a788e0;
  border-color: #a788e0;
  color: #0d1117;
}

.btn-outline-slate {
  border: 1px solid #57606a;
  color: #57606a;
  font-weight: 500;
  border-radius: 6px;
  background: transparent;
  transition: background-color 0.15s, color 0.15s;
}

.btn-outline-slate:hover,
.btn-outline-slate:focus {
  background-color: #57606a;
  border-color: #57606a;
  color: #ffffff;
}

[data-theme="dark"] .btn-outline-slate {
  border-color: #8b949e;
  color: #8b949e;
}

[data-theme="dark"] .btn-outline-slate:hover,
[data-theme="dark"] .btn-outline-slate:focus {
  background-color: #8b949e;
  border-color: #8b949e;
  color: #0d1117;
}

.btn-secondary {
  border-radius: 6px;
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  transition: background-color 0.15s;
}

.btn-secondary:hover {
  background: var(--bg-surface-hover);
  border-color: var(--border-color);
  color: var(--text-primary);
}

[data-theme="dark"] .btn-secondary {
  background: var(--bg-surface);
  border-color: var(--border-color);
  color: var(--text-primary);
}

[data-theme="dark"] .btn-secondary:hover {
  background: var(--bg-surface-hover);
  color: var(--text-primary);
}

.btn-warning {
  border-radius: 6px;
}

.btn-sm {
  border-radius: 6px;
  font-size: 0.8rem;
  padding: 0.25rem 0.65rem;
}

/* ==========================================================================
   Cards
   ========================================================================== */
.card {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  box-shadow: var(--shadow-sm);
}

.card:hover {
  box-shadow: var(--shadow-md);
}

.card-accent {
  box-shadow: var(--shadow-md);
}

.card-body {
  padding: 1.25rem;
}

/* ==========================================================================
   Stat Cards (Dashboard)
   ========================================================================== */
.stat-card {
  border-radius: 8px;
  border-left-width: 3px;
  border-left-style: solid;
  background: var(--bg-surface);
  border-color: var(--border-color);
  box-shadow: var(--shadow-sm);
}

.stat-card .card-body {
  position: relative;
}

.stat-card .stat-number {
  font-size: 1.75rem;
  font-weight: 700;
  line-height: 1.2;
  color: var(--text-primary);
}

.stat-card .stat-label {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  margin-bottom: 0.25rem;
}

.stat-card a {
  font-size: 0.8rem;
  color: var(--accent);
  text-decoration: none;
}

.stat-card a:hover {
  text-decoration: underline;
}

.stat-card-green  { border-left-color: #277B6B; }
.stat-card-teal   { border-left-color: #64A195; }
.stat-card-blue   { border-left-color: #0550ae; }
.stat-card-dark   { border-left-color: #57606a; }

[data-theme="dark"] .stat-card-green  { border-left-color: #3fb950; }
[data-theme="dark"] .stat-card-teal   { border-left-color: #58a6ff; }
[data-theme="dark"] .stat-card-blue   { border-left-color: #58a6ff; }
[data-theme="dark"] .stat-card-dark   { border-left-color: #8b949e; }

/* ==========================================================================
   Tables
   ========================================================================== */
.table {
  --bs-table-bg: transparent;
  --bs-table-color: var(--text-primary);
  --bs-table-border-color: var(--table-border);
  --bs-table-hover-bg: var(--table-hover-bg);
  --bs-table-hover-color: var(--text-primary);
  border-collapse: collapse;
  color: var(--text-primary);
  background-color: transparent;
  margin-bottom: 0;
}

.table thead th {
  background-color: var(--table-header-bg) !important;
  color: var(--text-secondary) !important;
  font-weight: 600;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  border-bottom: 1px solid var(--table-border) !important;
  padding: 0.6rem 1rem;
  white-space: nowrap;
}

.table tbody td {
  padding: 0.6rem 1rem;
  vertical-align: middle;
  border-bottom: 1px solid var(--table-border) !important;
  font-size: 0.875rem;
  color: var(--text-primary);
  background-color: transparent;
  white-space: nowrap;
}

.table tbody tr {
  background-color: transparent;
  transition: background-color 0.1s;
}

.table tbody tr:hover {
  background-color: var(--table-hover-bg) !important;
}

.table tbody tr:hover td {
  background-color: var(--table-hover-bg) !important;
}

.table tbody tr:last-child td {
  border-bottom: none !important;
}

.table-responsive {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  overflow: auto;
  box-shadow: var(--shadow-sm);
}

.table-responsive > .table {
  min-width: 100%;
}

/* ==========================================================================
   Badges
   ========================================================================== */
.badge-brand {
  background-color: var(--accent-subtle);
  color: var(--accent);
  border: 1px solid color-mix(in srgb, var(--accent) 30%, transparent);
  font-weight: 500;
  font-size: 0.72rem;
  padding: 0.2em 0.55em;
  border-radius: 20px;
}

.badge-blue {
  background-color: #ddf4ff;
  color: #0550ae;
  border: 1px solid #54aeff;
  font-weight: 500;
  font-size: 0.72rem;
  padding: 0.2em 0.55em;
  border-radius: 20px;
}

[data-theme="dark"] .badge-brand {
  background-color: var(--accent-subtle);
  color: var(--accent);
  border-color: var(--accent-emphasis);
}

[data-theme="dark"] .badge-blue {
  background-color: #051d4d;
  color: #58a6ff;
  border-color: #1f6feb;
}

/* Status badges — GitHub label style */
.badge-status-pending {
  background-color: #f6f8fa;
  color: #57606a;
  border: 1px solid #d0d7de;
  font-weight: 500;
  font-size: 0.72rem;
  padding: 0.2em 0.55em;
  border-radius: 20px;
}

.badge-status-sample_received {
  background-color: #ddf4ff;
  color: #0550ae;
  border: 1px solid #54aeff;
  font-weight: 500;
  font-size: 0.72rem;
  padding: 0.2em 0.55em;
  border-radius: 20px;
}

.badge-status-quality {
  background-color: #fbefff;
  color: #8250df;
  border: 1px solid #d2a8ff;
  font-weight: 500;
  font-size: 0.72rem;
  padding: 0.2em 0.55em;
  border-radius: 20px;
}

.badge-status-processing {
  background-color: #fff8c5;
  color: #9a6700;
  border: 1px solid #d4a72c;
  font-weight: 500;
  font-size: 0.72rem;
  padding: 0.2em 0.55em;
  border-radius: 20px;
}

.badge-status-stopped {
  background-color: #ffebe9;
  color: #cf222e;
  border: 1px solid #ff8182;
  font-weight: 500;
  font-size: 0.72rem;
  padding: 0.2em 0.55em;
  border-radius: 20px;
}

.badge-status-report_generated {
  background-color: #dafbe1;
  color: #1a7f37;
  border: 1px solid #aceebb;
  font-weight: 500;
  font-size: 0.72rem;
  padding: 0.2em 0.55em;
  border-radius: 20px;
}

[data-theme="dark"] .badge-status-pending {
  background-color: #21262d;
  color: #8b949e;
  border-color: #30363d;
}

[data-theme="dark"] .badge-status-sample_received {
  background-color: #051d4d;
  color: #58a6ff;
  border-color: #1f6feb;
}

[data-theme="dark"] .badge-status-quality {
  background-color: #1b1244;
  color: #d2a8ff;
  border-color: #8957e5;
}

[data-theme="dark"] .badge-status-processing {
  background-color: #271d00;
  color: #d29922;
  border-color: #9e6a03;
}

[data-theme="dark"] .badge-status-stopped {
  background-color: #2d0f0f;
  color: #f85149;
  border-color: #b91c1c;
}

[data-theme="dark"] .badge-status-report_generated {
  background-color: #0d1f1d;
  color: #7ab8ad;
  border-color: #2a5e58;
}

/* ==========================================================================
   Request table row highlights
   ========================================================================== */
tr.status-row-stopped td,
tr.status-row-stopped:hover td {
  background-color: #fff5f5 !important;
}

tr.status-row-report_generated td,
tr.status-row-report_generated:hover td {
  background-color: #f0fff4 !important;
}

tr.status-row-overdue td,
tr.status-row-overdue:hover td {
  background-color: #fffbe6 !important;
}

[data-theme="dark"] tr.status-row-stopped td,
[data-theme="dark"] tr.status-row-stopped:hover td {
  background-color: #2d0f0f !important;
}

[data-theme="dark"] tr.status-row-report_generated td,
[data-theme="dark"] tr.status-row-report_generated:hover td {
  background-color: #0d2a14 !important;
}

[data-theme="dark"] tr.status-row-overdue td,
[data-theme="dark"] tr.status-row-overdue:hover td {
  background-color: #271d00 !important;
}

/* Reopened badge */
.badge-reopened {
  background-color: #eef1f5;
  color: #57606a;
  border: 1px solid #d0d7de;
  font-size: .7rem;
  font-weight: 500;
  display: inline-flex;
  align-items: center;
}

[data-theme="dark"] .badge-reopened {
  background-color: #21262d;
  color: #8b949e;
  border-color: #30363d;
}

/* ==========================================================================
   Page Header
   ========================================================================== */
.page-header {
  padding-bottom: 0.75rem;
  margin-bottom: 1.5rem;
  border-bottom: 1px solid var(--border-color);
}

.page-header h2 {
  font-size: 1.375rem;
  font-weight: 600;
  margin: 0;
  color: var(--text-primary);
}

/* ==========================================================================
   Forms
   ========================================================================== */
.form-control,
.form-select {
  background-color: var(--bg-input);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  font-size: 0.875rem;
  transition: border-color 0.15s, box-shadow 0.15s;
}

.form-control:focus,
.form-select:focus {
  background-color: var(--bg-input);
  color: var(--text-primary);
  border-color: var(--accent);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 20%, transparent);
}

.form-control::placeholder {
  color: var(--text-muted);
}

.form-check-input {
  background-color: var(--bg-input);
  border-color: var(--border-color);
  border-radius: 3px;
}

.form-check-input:checked {
  background-color: var(--accent);
  border-color: var(--accent);
}

.form-label {
  font-weight: 500;
  font-size: 0.875rem;
  color: var(--text-primary);
}

.form-text {
  color: var(--text-muted);
  font-size: 0.8rem;
}

[data-theme="dark"] .form-control,
[data-theme="dark"] .form-select {
  background-color: var(--bg-input);
  border-color: var(--border-color);
  color: var(--text-primary);
}

[data-theme="dark"] .form-control::placeholder {
  color: var(--text-muted);
}

[data-theme="dark"] .form-check-label {
  color: var(--text-primary);
}

[data-theme="dark"] .invalid-feedback {
  color: #f85149;
}

/* ==========================================================================
   Alerts
   ========================================================================== */
.alert {
  border-radius: 6px;
  font-size: 0.875rem;
  border-width: 1px;
  border-style: solid;
}

.alert-success {
  background-color: var(--alert-success-bg);
  color: var(--alert-success-fg);
  border-color: var(--alert-success-bd);
}

.alert-danger,
.alert-error {
  background-color: var(--alert-danger-bg);
  color: var(--alert-danger-fg);
  border-color: var(--alert-danger-bd);
}

.alert-info {
  background-color: var(--alert-info-bg);
  color: var(--alert-info-fg);
  border-color: var(--alert-info-bd);
}

.alert-warning {
  background-color: var(--alert-warning-bg);
  color: var(--alert-warning-fg);
  border-color: var(--alert-warning-bd);
}

[data-theme="dark"] .alert {
  color: var(--text-primary);
}

/* ==========================================================================
   Login
   ========================================================================== */
.login-wrapper {
  min-height: 80vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.login-card {
  border: 1px solid var(--border-color);
  border-radius: 8px;
  box-shadow: var(--shadow-md);
  max-width: 420px;
  width: 100%;
  background: var(--bg-surface);
}

.login-card .card-body {
  padding: 2rem;
}

.login-brand {
  color: var(--accent);
  font-weight: 700;
  font-size: 1.5rem;
  letter-spacing: -0.02em;
}

.login-subtitle {
  color: var(--text-muted);
  font-size: 0.875rem;
}

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer {
  background: var(--footer-bg);
  border-top: 1px solid var(--border-color);
  color: var(--footer-text);
  padding: 1rem 0;
  font-size: 0.8rem;
  margin-top: 3rem;
}

.site-footer a {
  color: var(--accent);
}

.site-footer a:hover {
  text-decoration: underline;
}

/* ==========================================================================
   Section Title
   ========================================================================== */
.section-title {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 0.75rem;
  padding-bottom: 0.4rem;
  border-bottom: 1px solid var(--border-color);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

/* ==========================================================================
   Utility
   ========================================================================== */
.text-brand      { color: var(--accent) !important; }
.text-brand-teal { color: var(--accent) !important; }
.text-brand-blue { color: var(--brand-blue) !important; }
.bg-brand-light  { background-color: var(--accent-subtle) !important; }

/* ==========================================================================
   Tag Picker
   ========================================================================== */
.tag-picker {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.3rem;
  padding: 0.35rem 0.6rem;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  background: var(--bg-input);
  cursor: text;
  position: relative;
  transition: border-color 0.15s, box-shadow 0.15s;
}

.tag-picker:focus-within {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 20%, transparent);
  z-index: 100;
}

.tag-picker-selected {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem;
}

.tag-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  background-color: var(--accent-subtle);
  color: var(--accent);
  border: 1px solid color-mix(in srgb, var(--accent) 30%, transparent);
  border-radius: 20px;
  padding: 0.15rem 0.5rem;
  font-size: 0.75rem;
  font-weight: 500;
  white-space: nowrap;
}

@keyframes tagIn {
  from { transform: scale(0.85); opacity: 0; }
  to   { transform: scale(1);    opacity: 1; }
}

.tag-pill-remove {
  background: none;
  border: none;
  color: var(--accent);
  font-size: 0.9rem;
  line-height: 1;
  padding: 0 0.1rem;
  cursor: pointer;
  opacity: 0.6;
  transition: opacity 0.12s;
}

.tag-pill-remove:hover {
  opacity: 1;
}

.tag-picker-input {
  border: none;
  outline: none;
  background: transparent;
  color: var(--text-primary);
  font-size: 0.875rem;
  font-family: inherit;
  flex: 1;
  min-width: 120px;
  padding: 0.15rem 0;
}

.tag-picker-input::placeholder {
  color: var(--text-muted);
}

.tag-picker-dropdown {
  display: none;
  position: absolute;
  top: calc(100% + 4px);
  left: 0;
  right: 0;
  background: var(--dropdown-bg);
  border: 1px solid var(--dropdown-border);
  border-radius: 8px;
  box-shadow: var(--shadow-md);
  max-height: 220px;
  overflow-y: auto;
  z-index: 1050;
  padding: 0.25rem;
}

.tag-picker-dropdown.show {
  display: block;
}

.tag-picker-option {
  padding: 0.4rem 0.7rem;
  font-size: 0.875rem;
  border-radius: 6px;
  cursor: pointer;
  color: var(--text-primary);
  transition: background-color 0.1s;
}

.tag-picker-option:hover,
.tag-picker-option.focused {
  background-color: var(--bg-surface-hover);
}

.tag-picker-empty {
  padding: 0.5rem 0.7rem;
  font-size: 0.8rem;
  color: var(--text-muted);
  text-align: center;
}

/* ==========================================================================
   Empty State
   ========================================================================== */
.empty-state {
  text-align: center;
  padding: 3rem 1rem;
  color: var(--text-muted);
}

.empty-state p {
  font-size: 0.9rem;
  margin: 0;
}

/* ==========================================================================
   Modals
   ========================================================================== */
[data-theme="dark"] .modal-content {
  background: var(--bg-surface);
  border-color: var(--border-color);
  color: var(--text-primary);
}

[data-theme="dark"] .modal-header {
  border-bottom-color: var(--border-color);
}

[data-theme="dark"] .modal-footer {
  border-top-color: var(--border-color);
}

[data-theme="dark"] .modal-title {
  color: var(--text-primary);
}

[data-theme="dark"] .btn-close {
  filter: invert(1) grayscale(100%) brightness(200%);
}

/* ==========================================================================
   Misc Bootstrap overrides
   ========================================================================== */
[data-theme="dark"] {
  color-scheme: dark;
}

[data-theme="dark"] body,
[data-theme="dark"] .main-content,
[data-theme="dark"] p,
[data-theme="dark"] li,
[data-theme="dark"] span,
[data-theme="dark"] td,
[data-theme="dark"] th,
[data-theme="dark"] label,
[data-theme="dark"] strong,
[data-theme="dark"] small,
[data-theme="dark"] div {
  color: var(--text-primary);
}

[data-theme="dark"] .text-muted {
  color: var(--text-muted) !important;
}

[data-theme="dark"] hr {
  border-color: var(--border-color);
  opacity: 1;
}

[data-theme="dark"] .card,
[data-theme="dark"] .card-body,
[data-theme="dark"] .table-responsive {
  color: var(--text-primary);
}

[data-theme="dark"] .card-header {
  background: var(--bg-surface);
  border-bottom-color: var(--border-color);
  color: var(--text-primary);
}

[data-theme="dark"] .dropdown-menu,
[data-theme="dark"] .dropdown-item {
  color: var(--text-primary);
}

[data-theme="dark"] .dropdown-item:hover {
  background-color: var(--bg-surface-hover);
  color: var(--text-primary);
}

[data-theme="dark"] .dropdown-header {
  color: var(--text-muted);
}

[data-theme="dark"] .dropdown-divider {
  border-color: var(--border-color);
}

[data-theme="dark"] a:not(.btn):not(.nav-link):not(.dropdown-item):not(.stat-card a) {
  color: var(--accent);
}

[data-theme="dark"] .page-header h2,
[data-theme="dark"] .section-title,
[data-theme="dark"] h1, [data-theme="dark"] h2,
[data-theme="dark"] h3, [data-theme="dark"] h4,
[data-theme="dark"] h5, [data-theme="dark"] h6 {
  color: var(--text-primary);
}

[data-theme="dark"] .tag-picker-input,
[data-theme="dark"] .tag-picker-option {
  color: var(--text-primary);
}

[data-theme="dark"] .input-group-text {
  background: var(--bg-surface);
  border-color: var(--border-color);
  color: var(--text-secondary);
}

[data-theme="dark"] .input-group .btn-outline-secondary {
  background: var(--bg-surface);
  border-color: var(--border-color);
  color: var(--text-secondary);
}

[data-theme="dark"] .input-group .btn-outline-secondary:hover {
  background: var(--bg-surface-hover);
  color: var(--text-primary);
}

[data-theme="dark"] .table {
  --bs-table-bg: transparent;
  --bs-table-color: var(--text-primary);
  border-color: var(--table-border);
}

[data-theme="dark"] .form-text {
  color: var(--text-muted);
}

/* ==========================================================================
   List Group
   ========================================================================== */
.list-group-item {
  background-color: transparent;
  color: var(--text-primary);
  border-color: var(--border-color);
  font-size: 0.875rem;
}

.list-group-item-action:hover,
.list-group-item-action:focus {
  background-color: var(--bg-surface-hover);
  color: var(--text-primary);
}

.list-group-item-action:active {
  background-color: var(--accent-subtle);
  color: var(--text-primary);
}

/* ==========================================================================
   Chat
   ========================================================================== */
.chat-screen {
  display: flex;
  flex-direction: column;
  height: calc(100vh - 160px);
  min-height: 520px;
  border-radius: 8px;
  overflow: hidden;
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
}

.chat-header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border-color);
  flex-shrink: 0;
}

.chat-avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: 0.75rem;
  flex-shrink: 0;
}

.chat-avatar.lab {
  background: var(--accent);
}

.chat-header-info h6 {
  margin: 0;
  font-weight: 600;
  font-size: 0.875rem;
  line-height: 1.3;
}

.chat-header-info small {
  color: var(--text-muted);
  font-size: 0.75rem;
}

.chat-body {
  flex: 1;
  overflow-y: auto;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 2px;
  background: var(--bg-body);
}

.chat-date-sep {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 12px 0 6px;
  font-size: 0.7rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.chat-date-sep::before,
.chat-date-sep::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border-color);
}

.msg-row {
  display: flex;
  align-items: flex-end;
  gap: 8px;
  margin-bottom: 2px;
}

.msg-row.sent {
  flex-direction: row-reverse;
}

.msg-avatar {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.6rem;
  font-weight: 600;
  flex-shrink: 0;
  margin-bottom: 2px;
}

.msg-avatar.hidden {
  visibility: hidden;
}

.msg-group {
  display: flex;
  flex-direction: column;
  gap: 3px;
  max-width: 68%;
}

.msg-row.sent .msg-group     { align-items: flex-end; }
.msg-row.received .msg-group { align-items: flex-start; }

.bubble {
  padding: 8px 12px;
  border-radius: 16px;
  font-size: 0.875rem;
  line-height: 1.5;
  word-break: break-word;
  max-width: 100%;
}

.bubble.sent {
  background: var(--accent);
  color: #fff;
  border-bottom-right-radius: 4px;
}

.bubble.received {
  background: var(--bg-surface);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  border-bottom-left-radius: 4px;
}

.bubble-meta {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 0.67rem;
  color: var(--text-muted);
  padding: 0 4px;
  margin-top: 1px;
}

.msg-row.sent .bubble-meta {
  flex-direction: row-reverse;
}

.bubble-meta .bi-check2-all {
  color: var(--accent);
}

.chat-empty {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  gap: 10px;
  padding: 40px 0;
}

.chat-empty i {
  font-size: 2.5rem;
  opacity: 0.2;
}

.chat-empty p {
  margin: 0;
  font-size: 0.875rem;
}

/* Bubble attachments */
.bubble-attachment {
  padding: 6px 8px;
}

.bubble-image {
  display: block;
  width: auto;
  height: auto;
  max-width: min(220px, 100%);
  max-height: 240px;
  border-radius: 10px;
  object-fit: contain;
}

.bubble-file {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.82rem;
  text-decoration: none;
  word-break: break-all;
}

.bubble-file .bi {
  font-size: 1rem;
  flex-shrink: 0;
}

.bubble.sent .bubble-file { color: rgba(255, 255, 255, 0.92); }
.bubble.sent .bubble-file:hover { color: #fff; }
.bubble.received .bubble-file { color: var(--accent); }
.bubble.received .bubble-file:hover { opacity: 0.8; }

.chat-input {
  flex: 1;
  resize: none;
  border-radius: 20px !important;
  padding: 9px 14px !important;
  font-size: 0.875rem !important;
  min-height: 40px;
  max-height: 120px;
  overflow-y: auto;
  line-height: 1.5;
  background: var(--bg-input) !important;
  border: 1px solid var(--border-color) !important;
  transition: border-color 0.15s, box-shadow 0.15s;
  color: var(--text-primary) !important;
}

.chat-input:focus {
  border-color: var(--accent) !important;
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 20%, transparent) !important;
  outline: none;
}

.chat-send-btn {
  width: 40px;
  height: 40px;
  min-width: 40px;
  border-radius: 50%;
  background: var(--accent);
  border: none;
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
  cursor: pointer;
  transition: background-color 0.15s, transform 0.1s;
  flex-shrink: 0;
}

.chat-send-btn:hover {
  background: var(--accent-hover);
  transform: scale(1.05);
}

.chat-send-btn:active {
  transform: scale(0.95);
}

/* ==========================================================================
   Scrollbar
   ========================================================================== */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}