/* ==========================================================================
   NelSMS — App Design System
   Light & Dark themes, SaaS-blue primary. Custom CSS, no frameworks.
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. Design tokens
   -------------------------------------------------------------------------- */
:root {
  --bg: #f4f6fb;
  --surface: #ffffff;
  --surface-2: #f6f8fc;
  --surface-3: #eef1f8;
  --border: #e4e8f1;
  --border-strong: #d2d9e8;

  --text: #101828;
  --text-2: #475467;
  --text-3: #98a2b3;

  --brand: #2563eb;
  --brand-hover: #1d4ed8;
  --brand-active: #1e40af;
  --brand-soft: rgba(37, 99, 235, 0.1);
  --brand-softer: rgba(37, 99, 235, 0.06);
  --brand-ring: rgba(37, 99, 235, 0.28);

  --success: #12b76a;
  --success-soft: rgba(18, 183, 106, 0.12);
  --warning: #f79009;
  --warning-soft: rgba(247, 144, 9, 0.14);
  --danger: #f04438;
  --danger-soft: rgba(240, 68, 56, 0.12);
  --violet: #7a5af8;
  --violet-soft: rgba(122, 90, 248, 0.12);
  --cyan: #06aed4;
  --cyan-soft: rgba(6, 174, 212, 0.12);

  --shadow-xs: 0 1px 2px rgba(16, 24, 40, 0.04);
  --shadow-sm:
    0 1px 3px rgba(16, 24, 40, 0.06), 0 1px 2px rgba(16, 24, 40, 0.04);
  --shadow-md:
    0 6px 16px -4px rgba(16, 24, 40, 0.1), 0 2px 6px -2px rgba(16, 24, 40, 0.05);
  --shadow-lg:
    0 20px 40px -12px rgba(16, 24, 40, 0.18),
    0 8px 16px -6px rgba(16, 24, 40, 0.08);

  --radius-sm: 8px;
  --radius: 12px;
  --radius-lg: 16px;
  --radius-full: 999px;

  --sidebar-w: 264px;
  --sidebar-w-collapsed: 82px;
  --topbar-h: 68px;

  --font:
    -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue",
    Arial, "Noto Sans", sans-serif, "Apple Color Emoji", "Segoe UI Emoji";
}

[data-theme="dark"] {
  --bg: #0a0f1e;
  --surface: #0f1729;
  --surface-2: #121d34;
  --surface-3: #182442;
  --border: #1e2a47;
  --border-strong: #2b3a5e;

  --text: #e9edf6;
  --text-2: #9aa8bf;
  --text-3: #64748b;

  --brand: #3b82f6;
  --brand-hover: #5b93f7;
  --brand-active: #2563eb;
  --brand-soft: rgba(59, 130, 246, 0.16);
  --brand-softer: rgba(59, 130, 246, 0.08);
  --brand-ring: rgba(59, 130, 246, 0.34);

  --success: #22c58b;
  --success-soft: rgba(34, 197, 139, 0.16);
  --warning: #fbbf24;
  --warning-soft: rgba(251, 191, 36, 0.16);
  --danger: #f87171;
  --danger-soft: rgba(248, 113, 113, 0.16);
  --violet: #9b84ff;
  --violet-soft: rgba(155, 132, 255, 0.16);
  --cyan: #22d3ee;
  --cyan-soft: rgba(34, 211, 238, 0.16);

  --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.35);
  --shadow-md: 0 8px 20px -6px rgba(0, 0, 0, 0.5);
  --shadow-lg: 0 24px 48px -12px rgba(0, 0, 0, 0.6);
}

/* --------------------------------------------------------------------------
   2. Reset / base
   -------------------------------------------------------------------------- */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
  transition:
    background 0.3s ease,
    color 0.3s ease;
}

body {
  margin: 0;
  font-family: var(--font);
  font-size: 15px;
  line-height: 1.55;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  transition:
    background 0.3s ease,
    color 0.3s ease;
}

h1,
h2,
h3,
h4,
h5,
h6,
p {
  margin: 0;
}
a {
  color: var(--brand);
  text-decoration: none;
}
a:hover {
  color: var(--brand-hover);
}
ul {
  margin: 0;
  padding: 0;
  list-style: none;
}
img {
  max-width: 100%;
  display: block;
}
button {
  font-family: inherit;
}

::selection {
  background: var(--brand-ring);
  color: var(--text);
}

:focus-visible {
  outline: 2px solid var(--brand);
  outline-offset: 2px;
  border-radius: 6px;
}

::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}
::-webkit-scrollbar-thumb {
  background: var(--border-strong);
  border-radius: 8px;
  border: 2px solid var(--bg);
}
::-webkit-scrollbar-track {
  background: transparent;
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    transition-duration: 0.001ms !important;
  }
}

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

.sidebar {
  position: fixed;
  inset: 0 auto 0 0;
  width: var(--sidebar-w);
  z-index: 60;
  display: flex;
  flex-direction: column;
  background: var(--surface);
  border-right: 1px solid var(--border);
  transition:
    width 0.22s ease,
    transform 0.25s ease;
}

.main {
  flex: 1;
  min-width: 0;
  margin-left: var(--sidebar-w);
  display: flex;
  flex-direction: column;
  transition: margin-left 0.22s ease;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 40;
  height: var(--topbar-h);
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 0 24px;
  background: color-mix(in srgb, var(--surface) 88%, transparent);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}

.content {
  flex: 1;
  padding: 26px 26px 20px;
}

@media (min-width: 1280px) {
  .content {
    padding: 28px 34px 24px;
  }
}

/* --- Collapsed sidebar (desktop) --- */
body.sidebar-collapsed .sidebar {
  width: var(--sidebar-w-collapsed);
}
body.sidebar-collapsed .main {
  margin-left: var(--sidebar-w-collapsed);
}
body.sidebar-collapsed .sidebar .brand-text,
body.sidebar-collapsed .sidebar .nav-label,
body.sidebar-collapsed .sidebar .nav-badge,
body.sidebar-collapsed .sidebar .nav-caret,
body.sidebar-collapsed .sidebar .nav-group-title,
body.sidebar-collapsed .sidebar .sidebar-foot .foot-text,
body.sidebar-collapsed .sidebar .user-meta {
  display: none;
}
body.sidebar-collapsed .sidebar .nav-link {
  justify-content: center;
  padding: 10px;
}
body.sidebar-collapsed .sidebar .nav-link .nav-icon {
  margin: 0;
}
body.sidebar-collapsed .sidebar .sidebar-foot .user-chip {
  justify-content: center;
  padding: 10px;
}

.sidebar-backdrop {
  position: fixed;
  inset: 0;
  z-index: 55;
  background: rgba(9, 13, 24, 0.55);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;
}

/* --- Mobile drawer --- */
@media (max-width: 1023px) {
  .sidebar {
    transform: translateX(-105%);
    box-shadow: var(--shadow-lg);
    border-right: 0;
  }
  body.sidebar-mobile-open .sidebar {
    transform: translateX(0);
  }
  body.sidebar-mobile-open .sidebar-backdrop {
    opacity: 1;
    pointer-events: auto;
  }
  .main {
    margin-left: 0;
  }
  .topbar {
    padding: 0 16px;
  }
  .content {
    padding: 20px 16px 20px;
  }
}

/* --------------------------------------------------------------------------
   4. Brand
   -------------------------------------------------------------------------- */
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 18px 18px 16px;
  min-height: calc(var(--topbar-h) - 2px);
  border-bottom: 1px solid var(--border);
}
.brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: none;
  font-weight: 800;
  letter-spacing: 0.02em;
  color: #fff;
  border-radius: var(--radius);
  background: linear-gradient(
    135deg,
    var(--mark-accent, #2563eb),
    color-mix(in srgb, var(--mark-accent, #2563eb) 62%, #6d28d9)
  );
  box-shadow: 0 6px 14px -6px
    color-mix(in srgb, var(--mark-accent, #2563eb) 70%, transparent);
}
.brand-mark--md {
  width: 42px;
  height: 42px;
  font-size: 15px;
  border-radius: var(--radius);
}
.brand-mark--lg {
  width: 56px;
  height: 56px;
  font-size: 20px;
  border-radius: var(--radius-lg);
}
.brand-mark--xs {
  width: 36px;
  height: 36px;
  font-size: 13px;
  border-radius: 10px;
}
.brand-logo {
  object-fit: contain;
}
.brand-logo--md {
  width: 42px;
  height: 42px;
}
.brand-logo--lg {
  width: 56px;
  height: 56px;
}
.brand-logo--xs {
  width: 36px;
  height: 36px;
}

.brand-text {
  min-width: 0;
}
.brand-name {
  display: block;
  font-weight: 700;
  font-size: 15px;
  line-height: 1.25;
  color: var(--text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.brand-sub {
  display: block;
  font-size: 12px;
  color: var(--text-3);
  margin-top: 1px;
}

/* --------------------------------------------------------------------------
   5. Sidebar navigation
   -------------------------------------------------------------------------- */
.sidebar-nav {
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
  padding: 14px 12px 20px;
}
.nav-group + .nav-group {
  margin-top: 18px;
}
.nav-group-title {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-3);
  padding: 0 10px;
  margin-bottom: 6px;
}
.nav-link {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 12px;
  margin-bottom: 2px;
  border-radius: 10px;
  color: var(--text-2);
  font-weight: 500;
  font-size: 14px;
  transition:
    background 0.15s ease,
    color 0.15s ease;
}
.nav-link:hover {
  background: var(--surface-2);
  color: var(--text);
}
.nav-link.is-active {
  background: var(--brand-soft);
  color: var(--brand);
  font-weight: 600;
}
.nav-icon {
  width: 20px;
  text-align: center;
  font-size: 15px;
  flex: none;
}
.nav-label {
  flex: 1;
  min-width: 0;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.nav-badge {
  font-size: 11px;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: var(--radius-full);
}
.nav-badge--blue {
  background: var(--brand-soft);
  color: var(--brand);
}
.nav-badge--green {
  background: var(--success-soft);
  color: var(--success);
}
.nav-badge--violet {
  background: var(--violet-soft);
  color: var(--violet);
}
.nav-badge--amber {
  background: var(--warning-soft);
  color: var(--warning);
}
.nav-badge--red {
  background: var(--danger-soft);
  color: var(--danger);
}

/* Sidebar footer */
.sidebar-foot {
  padding: 14px 12px 16px;
  border-top: 1px solid var(--border);
}
.sidebar-upgrade {
  padding: 14px;
  border: 1px dashed var(--border-strong);
  border-radius: var(--radius);
  background: var(--surface-2);
  margin-bottom: 12px;
}
.sidebar-upgrade h4 {
  font-size: 13px;
  margin-bottom: 4px;
}
.sidebar-upgrade p {
  font-size: 12px;
  color: var(--text-2);
  margin-bottom: 10px;
}
.sidebar-upgrade .btn {
  width: 100%;
}
.user-chip {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px;
  border-radius: 10px;
}
.user-chip:hover {
  background: var(--surface-2);
}
.user-meta {
  flex: 1;
  min-width: 0;
}
.user-meta strong {
  display: block;
  font-size: 13px;
  line-height: 1.3;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.user-meta span {
  display: block;
  font-size: 12px;
  color: var(--text-3);
}

/* --------------------------------------------------------------------------
   6. Topbar
   -------------------------------------------------------------------------- */
.icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text-2);
  font-size: 15px;
  cursor: pointer;
  transition:
    background 0.15s ease,
    color 0.15s ease,
    border-color 0.15s ease;
  position: relative;
}
.icon-btn:hover {
  background: var(--surface-2);
  color: var(--text);
  border-color: var(--border-strong);
}

.icon-btn .dot {
  position: absolute;
  top: 8px;
  right: 9px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--danger);
  border: 2px solid var(--surface);
}

.topbar-breadcrumb small {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-3);
  font-weight: 500;
}
.topbar-breadcrumb small i {
  font-size: 10px;
  color: var(--text-3);
}
.topbar-search {
  flex: 1;
  max-width: 380px;
}
.topbar-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-left: auto;
}

/* --------------------------------------------------------------------------
   7. Search
   -------------------------------------------------------------------------- */
.search {
  position: relative;
}
.search > i {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-3);
  font-size: 14px;
  pointer-events: none;
}
.search .input {
  padding-left: 40px;
}

/* --------------------------------------------------------------------------
   8. Buttons
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: inherit;
  font-size: 14px;
  font-weight: 600;
  line-height: 1;
  padding: 11px 16px;
  border-radius: 10px;
  border: 1px solid transparent;
  cursor: pointer;
  white-space: nowrap;
  user-select: none;
  transition:
    background 0.15s ease,
    border-color 0.15s ease,
    box-shadow 0.15s ease,
    color 0.15s ease,
    transform 0.05s ease;
}
.btn:active {
  transform: translateY(1px);
}
.btn i {
  font-size: 14px;
}
.btn-sm {
  padding: 8px 12px;
  font-size: 13px;
  border-radius: 8px;
}
.btn-sm i {
  font-size: 13px;
}
.btn-lg {
  padding: 13px 20px;
  font-size: 15px;
  border-radius: 12px;
}
.btn-block {
  width: 100%;
  display: flex;
}
.btn-icon {
  width: 40px;
  height: 40px;
  padding: 0;
}

.btn-primary {
  background: var(--brand);
  color: #fff;
  box-shadow: 0 6px 14px -6px color-mix(in srgb, var(--brand) 60%, transparent);
}
.btn-primary:hover {
  background: var(--brand-hover);
  color: #fff;
}
.btn-primary:active {
  background: var(--brand-active);
  color: #fff;
}

.btn-outline {
  background: var(--surface);
  color: var(--text-2);
  border-color: var(--border-strong);
}
.btn-outline:hover {
  background: var(--surface-2);
  color: var(--text);
  border-color: var(--text-3);
}

.btn-ghost {
  background: transparent;
  color: var(--text-2);
}
.btn-ghost:hover {
  background: var(--surface-2);
  color: var(--text);
}

.btn-danger {
  background: var(--danger);
  color: #fff;
}
.btn-danger:hover {
  filter: brightness(0.94);
  color: #fff;
}
.btn-danger-outline {
  background: transparent;
  color: var(--danger);
  border-color: color-mix(in srgb, var(--danger) 45%, transparent);
}
.btn-danger-outline:hover {
  background: var(--danger-soft);
  color: var(--danger);
}

.btn-success {
  background: var(--success);
  color: #fff;
}
.btn-success:hover {
  filter: brightness(0.94);
  color: #fff;
}

/* --------------------------------------------------------------------------
   9. Cards
   -------------------------------------------------------------------------- */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xs);
}
.card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 18px 20px;
  border-bottom: 1px solid var(--border);
}
.card-head h3 {
  font-size: 15px;
  font-weight: 700;
}
.card-head p {
  font-size: 13px;
  color: var(--text-2);
  margin-top: 2px;
}
.card-body {
  padding: 20px;
}
.card-body--flush {
  padding: 0;
}
.card-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 20px;
  border-top: 1px solid var(--border);
  font-size: 13px;
  color: var(--text-2);
}

/* --------------------------------------------------------------------------
   10. Stats / metric tiles
   -------------------------------------------------------------------------- */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 16px;
  margin-bottom: 22px;
}
.stat {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 14px;
  padding: 18px 18px 16px;
}
.stat-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  border-radius: var(--radius);
  font-size: 18px;
  flex: none;
}
.stat-icon--blue {
  background: var(--brand-soft);
  color: var(--brand);
}
.stat-icon--green {
  background: var(--success-soft);
  color: var(--success);
}
.stat-icon--violet {
  background: var(--violet-soft);
  color: var(--violet);
}
.stat-icon--amber {
  background: var(--warning-soft);
  color: var(--warning);
}
.stat-icon--cyan {
  background: var(--cyan-soft);
  color: var(--cyan);
}
.stat-icon--red {
  background: var(--danger-soft);
  color: var(--danger);
}
.stat-label {
  font-size: 13px;
  color: var(--text-2);
  font-weight: 500;
}
.stat-value {
  font-size: 26px;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-top: 2px;
}
.stat-delta {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 12px;
  font-weight: 700;
  margin-top: 8px;
}
.stat-delta--up {
  color: var(--success);
}
.stat-delta--down {
  color: var(--danger);
}
.stat-spark {
  margin-top: 10px;
}

/* --------------------------------------------------------------------------
   11. Grid helpers
   -------------------------------------------------------------------------- */
.grid {
  display: grid;
  gap: 18px;
}
.grid-2 {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}
.grid-3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}
.grid-4 {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}
.grid-main {
  grid-template-columns: minmax(0, 2fr) minmax(0, 1fr);
}
@media (max-width: 1100px) {
  .grid-3 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}
@media (max-width: 820px) {
  .grid-2,
  .grid-3,
  .grid-4,
  .grid-main {
    grid-template-columns: minmax(0, 1fr);
  }
}

/* --------------------------------------------------------------------------
   12. Page header
   -------------------------------------------------------------------------- */
.page-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 22px;
}
.page-head h1 {
  font-size: 24px;
  font-weight: 800;
  letter-spacing: -0.02em;
}
.page-head p {
  color: var(--text-2);
  font-size: 14px;
  margin-top: 4px;
}
.page-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

/* --------------------------------------------------------------------------
   13. Tables
   -------------------------------------------------------------------------- */
.table-wrap {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}
.table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}
.table th {
  text-align: left;
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-3);
  padding: 12px 20px;
  border-bottom: 1px solid var(--border);
  background: var(--surface-2);
  white-space: nowrap;
}
.table th:first-child {
  border-radius: 0;
}
.table td {
  padding: 13px 20px;
  border-bottom: 1px solid var(--border);
  vertical-align: middle;
  color: var(--text-2);
}
.table tbody tr {
  transition: background 0.12s ease;
}
.table tbody tr:hover {
  background: var(--surface-2);
}
.table tbody tr:last-child td {
  border-bottom: 0;
}
.table td strong {
  color: var(--text);
  font-weight: 600;
}
.table .cell-main {
  display: flex;
  align-items: center;
  gap: 12px;
}
.table .cell-title {
  font-weight: 600;
  color: var(--text);
  font-size: 14px;
}
.table .cell-sub {
  font-size: 12px;
  color: var(--text-3);
  margin-top: 1px;
}
.table .cell-end {
  text-align: right;
}
.table .row-actions {
  display: flex;
  gap: 6px;
}

/* Mobile: stack tables into cards */
@media (max-width: 767px) {
  .table-wrap {
    overflow: visible;
  }
  .table-stack thead {
    display: none;
  }
  .table-stack,
  .table-stack tbody,
  .table-stack tr,
  .table-stack td {
    display: block;
    width: 100%;
  }
  .table-stack tr {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    margin-bottom: 12px;
    box-shadow: var(--shadow-xs);
    overflow: hidden;
  }
  .table-stack tr:first-child {
    border-top: 1px solid var(--border);
  }
  .table-stack td {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 11px 14px;
    border-bottom: 1px solid var(--border);
  }
  .table-stack td:last-child {
    border-bottom: 0;
  }
  .table-stack td::before {
    content: attr(data-label);
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-3);
    flex: none;
  }
  .table-stack .cell-main {
    flex: 1;
    justify-content: flex-end;
    text-align: right;
    flex-direction: row-reverse;
  }
}

/* --------------------------------------------------------------------------
   14. Badges / chips / avatars
   -------------------------------------------------------------------------- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: var(--radius-full);
  white-space: nowrap;
}
.badge--green {
  background: var(--success-soft);
  color: var(--success);
}
.badge--amber {
  background: var(--warning-soft);
  color: var(--warning);
}
.badge--red {
  background: var(--danger-soft);
  color: var(--danger);
}
.badge--blue {
  background: var(--brand-soft);
  color: var(--brand);
}
.badge--violet {
  background: var(--violet-soft);
  color: var(--violet);
}
.badge--cyan {
  background: var(--cyan-soft);
  color: var(--cyan);
}
.badge--grey {
  background: var(--surface-3);
  color: var(--text-2);
}
.badge i {
  font-size: 10px;
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: var(--radius-full);
  background: var(--surface-3);
  color: var(--text-2);
}

.avatar {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: none;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  font-size: 13px;
  font-weight: 700;
  color: #fff;
  background: linear-gradient(135deg, var(--brand), var(--violet));
}

.icon-btn.avatar:hover{
  background: linear-gradient(135deg, var(--brand), var(--violet));
  color: #dadada;
}

.avatar--sm {
  width: 30px;
  height: 30px;
  font-size: 11px;
}
.avatar--lg {
  width: 48px;
  height: 48px;
  font-size: 16px;
}
.avatar--green {
  background: linear-gradient(135deg, #12b76a, #0d9488);
}
.avatar--amber {
  background: linear-gradient(135deg, #f79009, #ea580c);
}
.avatar--cyan {
  background: linear-gradient(135deg, #06aed4, #0284c7);
}
.avatar--violet {
  background: linear-gradient(135deg, #7a5af8, #6d28d9);
}
.avatar .status-dot {
  position: absolute;
  bottom: 1px;
  right: 1px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  border: 2px solid var(--surface);
}
.status-dot--online {
  background: var(--success);
}
.status-dot--busy {
  background: var(--warning);
}
.status-dot--offline {
  background: var(--text-3);
}

/* --------------------------------------------------------------------------
   15. Forms
   -------------------------------------------------------------------------- */
.field {
  display: flex;
  flex-direction: column;
  gap: 7px;
  margin-top: 16px;
}

.field label {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-2);
}
.field label .req {
  color: var(--danger);
}
.field .hint {
  font-size: 12px;
  color: var(--text-3);
}

.input,
.select,
.textarea {
  width: 100%;
  font-family: inherit;
  font-size: 14px;
  color: var(--text);
  background: var(--surface);
  border: 1px solid var(--border-strong);
  border-radius: 10px;
  padding: 11px 14px;
  transition:
    border-color 0.15s ease,
    box-shadow 0.15s ease;
}
.input::placeholder,
.textarea::placeholder {
  color: var(--text-3);
}
.input:focus,
.select:focus,
.textarea:focus {
  outline: 0;
  border-color: var(--brand);
  box-shadow: 0 0 0 3px var(--brand-ring);
}
.select {
  appearance: none;
  -webkit-appearance: none;
  background-image:
    linear-gradient(45deg, transparent 50%, var(--text-3) 50%),
    linear-gradient(135deg, var(--text-3) 50%, transparent 50%);
  background-position:
    calc(100% - 18px) 50%,
    calc(100% - 13px) 50%;
  background-size: 5px 5px;
  background-repeat: no-repeat;
  padding-right: 38px;
  cursor: pointer;
}
.textarea {
  min-height: 100px;
  resize: vertical;
}
.input-group {
  display: flex;
  gap: 10px;
}

.checkbox,
.radio {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: var(--text-2);
  cursor: pointer;
  user-select: none;
}
.checkbox input,
.radio input {
  width: 18px;
  height: 18px;
  accent-color: var(--brand);
  cursor: pointer;
}

.switch {
  position: relative;
  display: inline-block;
  width: 44px;
  height: 24px;
  flex: none;
}
.switch input {
  opacity: 0;
  width: 0;
  height: 0;
}
.switch .track {
  position: absolute;
  inset: 0;
  background: var(--border-strong);
  border-radius: var(--radius-full);
  transition: background 0.15s ease;
  cursor: pointer;
}
.switch .track::before {
  content: "";
  position: absolute;
  left: 3px;
  top: 3px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: #fff;
  transition: transform 0.18s ease;
  box-shadow: var(--shadow-sm);
}
.switch input:checked + .track {
  background: var(--brand);
}
.switch input:checked + .track::before {
  transform: translateX(20px);
}

/* Toggle field rows */
.toggle-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 0;
  border-bottom: 1px solid var(--border);
}
.toggle-row:last-child {
  border-bottom: 0;
}
.toggle-row h4 {
  font-size: 14px;
  font-weight: 600;
}
.toggle-row p {
  font-size: 12.5px;
  color: var(--text-2);
  margin-top: 2px;
}

/* --------------------------------------------------------------------------
   16. Dropdowns / menus
   -------------------------------------------------------------------------- */
.dropdown {
  position: relative;
}
.dropdown-menu {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  min-width: 230px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  padding: 6px;
  z-index: 70;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-6px);
  transition:
    opacity 0.16s ease,
    transform 0.16s ease,
    visibility 0.16s;
}
.dropdown.open .dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.menu-head {
  padding: 10px 12px 8px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 4px;
}
.menu-head h4 {
  font-size: 13px;
  font-weight: 700;
}
.menu-head p {
  font-size: 12px;
  color: var(--text-3);
}
.menu-item {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  padding: 9px 12px;
  border-radius: 8px;
  border: 0;
  background: none;
  font-family: inherit;
  font-size: 14px;
  color: var(--text-2);
  cursor: pointer;
  text-align: left;
  transition:
    background 0.12s ease,
    color 0.12s ease;
}
.menu-item i {
  width: 16px;
  text-align: center;
  color: var(--text-3);
}
.menu-item:hover {
  background: var(--surface-2);
  color: var(--text);
}
.menu-item:hover i {
  color: var(--text-2);
}
.menu-item--danger,
.menu-item--danger i {
  color: var(--danger);
}
.menu-item--danger:hover {
  background: var(--danger-soft);
  color: var(--danger);
}
.menu-item--danger:hover i {
  color: var(--danger);
}
.menu-divider {
  height: 1px;
  background: var(--border);
  margin: 6px;
}

.notif-item {
  display: flex;
  gap: 12px;
  padding: 12px;
  border-radius: 10px;
}
.notif-item:hover {
  background: var(--surface-2);
}
.notif-item .notif-body {
  min-width: 0;
}
.notif-item .notif-body p {
  font-size: 13.5px;
  color: var(--text-2);
}
.notif-item .notif-body strong {
  color: var(--text);
  font-weight: 600;
}
.notif-item .notif-time {
  font-size: 12px;
  color: var(--text-3);
  margin-top: 2px;
}
.dropdown-menu--wide {
  min-width: 320px;
}
.dropdown-menu--wide .card-foot {
  border: 0;
  padding: 8px 12px 4px;
  justify-content: center;
}

/* --------------------------------------------------------------------------
   17. Charts (pure CSS / SVG)
   -------------------------------------------------------------------------- */
.bars {
  display: flex;
  align-items: flex-end;
  gap: 14px;
  height: 190px;
  padding-top: 10px;
}
.bar-col {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  height: 100%;
  justify-content: flex-end;
  min-width: 0;
}
.bar-track {
  flex: 1;
  width: 100%;
  max-width: 44px;
  display: flex;
  align-items: flex-end;
  border-radius: 8px 8px 4px 4px;
  background: var(--surface-3);
  overflow: hidden;
}
.bar-fill {
  width: 100%;
  border-radius: 8px 8px 4px 4px;
  background: linear-gradient(
    180deg,
    var(--brand),
    color-mix(in srgb, var(--brand) 55%, transparent)
  );
  animation: grow-bar 0.8s ease;
  min-height: 2px;
}
.bar-fill--violet {
  background: linear-gradient(
    180deg,
    var(--violet),
    color-mix(in srgb, var(--violet) 55%, transparent)
  );
}
.bar-fill--green {
  background: linear-gradient(
    180deg,
    var(--success),
    color-mix(in srgb, var(--success) 55%, transparent)
  );
}
.bar-fill--amber {
  background: linear-gradient(
    180deg,
    var(--warning),
    color-mix(in srgb, var(--warning) 55%, transparent)
  );
}
.bar-label {
  font-size: 12px;
  color: var(--text-3);
  font-weight: 600;
  white-space: nowrap;
}
.bar-value {
  font-size: 12px;
  font-weight: 700;
  color: var(--text-2);
}
@keyframes grow-bar {
  from {
    transform: scaleY(0);
    transform-origin: bottom;
  }
  to {
    transform: scaleY(1);
  }
}

.progress {
  display: flex;
  align-items: center;
  gap: 10px;
}
.progress-track {
  flex: 1;
  height: 8px;
  border-radius: var(--radius-full);
  background: var(--surface-3);
  overflow: hidden;
}
.progress-fill {
  height: 100%;
  border-radius: var(--radius-full);
  background: linear-gradient(
    90deg,
    var(--brand),
    color-mix(in srgb, var(--brand) 65%, #a5f3fc)
  );
}
.progress-fill--green {
  background: linear-gradient(
    90deg,
    var(--success),
    color-mix(in srgb, var(--success) 60%, #d1fae5)
  );
}
.progress-fill--amber {
  background: linear-gradient(
    90deg,
    var(--warning),
    color-mix(in srgb, var(--warning) 60%, #fef3c7)
  );
}
.progress-fill--red {
  background: linear-gradient(
    90deg,
    var(--danger),
    color-mix(in srgb, var(--danger) 60%, #fee2e2)
  );
}
.progress-fill--violet {
  background: linear-gradient(
    90deg,
    var(--violet),
    color-mix(in srgb, var(--violet) 60%, #ede9fe)
  );
}
.progress-num {
  font-size: 13px;
  font-weight: 700;
  color: var(--text-2);
  min-width: 38px;
  text-align: right;
}

.donut-wrap {
  display: flex;
  align-items: center;
  gap: 22px;
  flex-wrap: wrap;
}
.donut {
  position: relative;
  width: 170px;
  height: 170px;
  border-radius: 50%;
  flex: none;
}
.donut::after {
  content: "";
  position: absolute;
  inset: 26px;
  border-radius: 50%;
  background: var(--surface);
}
.donut-center {
  position: absolute;
  inset: 0;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}
.donut-center strong {
  font-size: 24px;
  font-weight: 800;
}
.donut-center span {
  font-size: 12px;
  color: var(--text-3);
}
.legend {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.legend-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13.5px;
  color: var(--text-2);
}
.legend-swatch {
  width: 12px;
  height: 12px;
  border-radius: 4px;
  flex: none;
}
.legend-item strong {
  margin-left: auto;
  color: var(--text);
}

.spark-title {
  font-size: 12px;
  color: var(--text-3);
  font-weight: 600;
  margin-bottom: 2px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* --------------------------------------------------------------------------
   18. Tabs
   -------------------------------------------------------------------------- */
.tabs {
  display: flex;
  gap: 4px;
  border-bottom: 1px solid var(--border);
  overflow-x: auto;
  margin-bottom: 22px;
}
.tab {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 16px;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-2);
  background: none;
  border: 0;
  border-bottom: 2px solid transparent;
  cursor: pointer;
  white-space: nowrap;
  transition:
    color 0.15s ease,
    border-color 0.15s ease;
  font-family: inherit;
}
.tab:hover {
  color: var(--text);
}
.tab.is-active {
  color: var(--brand);
  border-bottom-color: var(--brand);
}

/* --------------------------------------------------------------------------
   19. Misc components
   -------------------------------------------------------------------------- */
.avatar-stack {
  display: flex;
}
.avatar-stack .avatar {
  border: 2px solid var(--surface);
  margin-left: -10px;
}
.avatar-stack .avatar:first-child {
  margin-left: 0;
}

.empty-state {
  text-align: center;
  padding: 44px 20px;
  color: var(--text-2);
}
.empty-state i {
  font-size: 40px;
  color: var(--text-3);
  background: var(--surface-2);
  width: 84px;
  height: 84px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  margin-bottom: 16px;
}
.empty-state h3 {
  font-size: 16px;
  color: var(--text);
  margin-bottom: 6px;
}
.empty-state p {
  font-size: 14px;
  max-width: 320px;
  margin: 0 auto 18px;
}

.ktl {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
}
.ktl + .ktl {
  margin-top: 10px;
}
.ktl:hover {
  border-color: var(--border-strong);
  background: var(--surface-2);
}
.ktl-left {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}
.ktl-icon {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 15px;
  flex: none;
}
.ktl-body {
  min-width: 0;
}
.ktl-body strong {
  display: block;
  font-size: 14px;
  color: var(--text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.ktl-body span {
  font-size: 12.5px;
  color: var(--text-3);
}

.timeline {
  position: relative;
}
.timeline::before {
  content: "";
  position: absolute;
  left: 19px;
  top: 6px;
  bottom: 6px;
  width: 2px;
  background: var(--border);
}
.timeline-item {
  position: relative;
  display: flex;
  gap: 14px;
  padding-bottom: 18px;
}
.timeline-item:last-child {
  padding-bottom: 0;
}
.timeline-dot {
  position: relative;
  z-index: 1;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  flex: none;
  color: var(--brand);
  background: var(--surface);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-xs);
}
.timeline-item strong {
  font-size: 14px;
  color: var(--text);
  display: block;
}
.timeline-item p {
  font-size: 13px;
  color: var(--text-2);
  margin-top: 2px;
}
.timeline-item time {
  font-size: 12px;
  color: var(--text-3);
  margin-top: 4px;
  display: block;
}

.toolbar {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 18px;
}
.toolbar .search {
  flex: 1;
  min-width: 220px;
}
.toolbar .spacer {
  flex: 1;
}

.pagination {
  display: flex;
  align-items: center;
  gap: 6px;
}
.pagination .icon-btn {
  width: 36px;
  height: 36px;
  font-size: 13px;
}
.pagination .pg {
  min-width: 36px;
  height: 36px;
  padding: 0 8px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
  font-size: 13.5px;
  font-weight: 600;
  color: var(--text-2);
}
.pagination .pg:hover {
  background: var(--surface-2);
}

/* --- Dashboard app footer --- */
.app-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  flex-wrap: wrap;
  padding: 16px 0 0;
  margin-top: 28px;
  border-top: 1px solid var(--border);
  font-size: 12.5px;
  color: var(--text-3);
}
.app-footer-left,
.app-footer-right {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}
.app-footer strong {
  font-weight: 600;
}
.app-footer a {
  color: var(--text-3);
  text-decoration: none;
  padding: 4px 6px;
  border-radius: 8px;
  transition:
    color 0.15s ease,
    background 0.15s ease;
}
.app-footer a:hover {
  color: var(--brand);
  background: var(--brand-soft);
}
.app-footer .dot-sep {
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background: var(--border-strong);
}
.footer-status {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.footer-top {
  width: 32px;
  height: 32px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--surface);
  color: var(--text-2);
  cursor: pointer;
  font-size: 13px;
  transition:
    background 0.15s ease,
    color 0.15s ease,
    border-color 0.15s ease;
}
.footer-top:hover {
  background: var(--brand);
  border-color: var(--brand);
  color: #fff;
}

@media (max-width: 767px) {
  .app-footer {
    flex-direction: column;
    align-items: flex-start;
  }
}

[data-sidebar-collapse] i {
  transition: transform 0.25s ease;
}
body.sidebar-collapsed [data-sidebar-collapse] i {
  transform: rotate(180deg);
}

.sidebar,
.topbar,
.main,
.card,
.surface,
.btn,
.icon-btn,
.input,
.select,
.nav-link,
.dropdown-menu {
  transition:
    background-color 0.3s ease,
    color 0.3s ease,
    border-color 0.25s ease,
    box-shadow 0.25s ease;
}
.pagination .pg.is-active {
  background: var(--brand);
  color: #fff;
}

/* Toast */
.toast-wrap {
  position: fixed;
  bottom: 22px;
  right: 22px;
  z-index: 100;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.toast {
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--text);
  color: var(--bg);
  font-size: 14px;
  font-weight: 500;
  padding: 12px 16px;
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  transform: translateY(14px);
  opacity: 0;
  transition:
    transform 0.25s ease,
    opacity 0.25s ease;
  max-width: 340px;
}

.toast-error{
  background: #dc2626;
  color: #fff;
}

.toast-success{
  background: #16a34a;
  color: #fff;
}

.toast.show {
  transform: translateY(0);
  opacity: 1;
}
.toast i {
  color: var(--success);
}

.toast-error i{
  color: #ccc;
}

.loading i{
  transition: all 1s ease-in-out;
  animation: rotate 3s forwards infinite;
}

@keyframes rotate {
  0%{
    transform: rotate(90deg);
  } 
  25%{
    transform: rotate(180deg);
  } 
  75%{
    transform: rotate(270deg);
  }
  100%{
    transform: rotate(360deg);
  }
}


.toast-success i{
   color: #fff;
}

/* Modal (non-functional stub) */
.modal-backdrop {
  position: fixed;
  inset: 0;
  z-index: 90;
  background: rgba(9, 13, 24, 0.6);
  display: none;
  align-items: flex-start;
  justify-content: center;
  padding: 24px;
  overflow-y: auto;
}
.modal-backdrop.open {
  display: flex;
}
.modal {
  width: 100%;
  max-width: 560px;
  margin-top: 6vh;
  background: var(--surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-lg);
  animation: modal-in 0.22s ease;
}
@keyframes modal-in {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}
.modal-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 20px;
  border-bottom: 1px solid var(--border);
}
.modal-head h3 {
  font-size: 16px;
  font-weight: 700;
}
.modal-body {
  padding: 20px;
}
.modal-foot {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  padding: 16px 20px;
  border-top: 1px solid var(--border);
}

/* --------------------------------------------------------------------------
   20. Auth (login) page
   -------------------------------------------------------------------------- */
.auth-page {
  --auth-surface: var(--surface);
  min-height: 100vh;
  display: flex;
  align-items: stretch;
  background: var(--bg);
}
.auth-brand {
  position: relative;
  flex: 1.1;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 44px 48px;
  color: #fff;
  overflow: hidden;
  background:
    radial-gradient(
      1000px 500px at 110% -10%,
      color-mix(in srgb, var(--mark-accent, #2563eb) 55%, transparent),
      transparent 60%
    ),
    radial-gradient(
      800px 500px at -20% 110%,
      color-mix(in srgb, var(--brand) 40%, transparent),
      transparent 55%
    ),
    linear-gradient(160deg, #0f1f45 0%, var(--mark-accent, #2563eb) 130%);
}
.auth-brand::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(
    rgba(255, 255, 255, 0.16) 1px,
    transparent 1px
  );
  background-size: 22px 22px;
  opacity: 0.25;
  pointer-events: none;
}
.auth-brand * {
  position: relative;
  z-index: 1;
}
.auth-brand .brand {
  border: 0;
  padding: 0;
  min-height: 0;
}
.auth-brand .brand-name {
  color: #fff;
  font-size: 18px;
}
.auth-brand .brand-sub {
  color: rgba(255, 255, 255, 0.8);
}
.auth-hero h1 {
  font-size: clamp(28px, 3.4vw, 42px);
  line-height: 1.15;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 14px;
}
.auth-hero p {
  font-size: 16px;
  color: rgba(255, 255, 255, 0.85);
  max-width: 420px;
}
.auth-brand-features {
  display: flex;
  flex-direction: column;
  gap: 14px;
  max-width: 380px;
}
.auth-brand-features li {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.9);
}
.auth-brand-features li i {
  color: #bae6fd;
  margin-top: 3px;
  flex: none;
}

.auth-panel {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 32px 24px;
}
.auth-card {
  width: 100%;
  max-width: 420px;
}
.auth-card .brand {
  border: 0;
  padding: 0 0 20px;
  min-height: 0;
}
.auth-logo-row {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 26px;
}
.auth-logo-row .brand-name {
  font-size: 17px;
}
.auth-card h2 {
  font-size: 24px;
  font-weight: 800;
  letter-spacing: -0.02em;
}
.auth-card .lead {
  color: var(--text-2);
  font-size: 14px;
  margin: 6px 0 24px;
}
.auth-alt {
  text-align: center;
  font-size: 14px;
  color: var(--text-2);
  margin-top: 20px;
}
.auth-alt a {
  font-weight: 600;
}

@media (max-width: 920px) {
  .auth-brand {
    display: none;
  }
  .auth-panel {
    padding: 24px 18px;
  }
}

/* --------------------------------------------------------------------------
   21. Landing page
   -------------------------------------------------------------------------- */
.landing-page {
  background: var(--bg);
}
.landing-nav {
  position: sticky;
  top: 0;
  z-index: 40;
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 14px 26px;
  background: color-mix(in srgb, var(--surface) 86%, transparent);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.landing-nav .spacer {
  flex: 1;
}
.landing-nav .nav-link-2 {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-2);
  padding: 8px 10px;
  border-radius: 8px;
}
.landing-nav .nav-link-2:hover {
  color: var(--text);
  background: var(--surface-2);
}
.landing-hero {
  text-align: center;
  padding: 90px 24px 70px;
  position: relative;
  overflow: hidden;
}
.landing-hero::before {
  content: "";
  position: absolute;
  inset: -20% -10% auto;
  height: 60%;
  background:
    radial-gradient(600px 260px at 20% 0, var(--brand-soft), transparent 60%),
    radial-gradient(600px 260px at 80% 10%, var(--violet-soft), transparent 60%);
  pointer-events: none;
}
.landing-hero h1 {
  font-size: clamp(32px, 5vw, 52px);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.1;
  max-width: 720px;
  margin: 0 auto 18px;
}
.landing-hero h1 span {
  color: var(--brand);
}
.landing-hero p {
  font-size: 17px;
  color: var(--text-2);
  max-width: 560px;
  margin: 0 auto 30px;
}
.landing-hero .hero-cta {
  display: flex;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
}
.landing-features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 18px;
  padding: 30px 26px 70px;
  max-width: 1200px;
  margin: 0 auto;
}
.landing-features .card {
  padding: 26px;
}
.landing-features .ktl-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  font-size: 18px;
  margin-bottom: 14px;
}
.landing-features h3 {
  font-size: 16px;
  margin-bottom: 8px;
}
.landing-features p {
  font-size: 14px;
  color: var(--text-2);
}
.landing-cta {
  text-align: center;
  padding: 60px 24px;
  background: var(--surface);
  border-top: 1px solid var(--border);
}
.landing-cta h2 {
  font-size: 28px;
  font-weight: 800;
  margin-bottom: 10px;
}
.landing-cta p {
  color: var(--text-2);
  margin-bottom: 22px;
}
.landing-footer {
  border-top: 1px solid var(--border);
  padding: 22px 26px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  color: var(--text-3);
  font-size: 13px;
}

/* --------------------------------------------------------------------------
   22. Utilities
   -------------------------------------------------------------------------- */
.flex {
  display: flex;
  align-items: center;
  gap: 10px;
}
.flex-between {
  justify-content: space-between;
}
.wrap {
  flex-wrap: wrap;
}
.shrink-0 {
  flex: none;
}
.grow {
  flex: 1;
  min-width: 0;
}
.mt-0 {
  margin-top: 0;
}
.mt-1 {
  margin-top: 6px;
}
.mt-2 {
  margin-top: 12px;
}
.mt-3 {
  margin-top: 18px;
}
.mt-4 {
  margin-top: 26px;
}
.mb-0 {
  margin-bottom: 0;
}
.mb-1 {
  margin-bottom: 6px;
}
.mb-2 {
  margin-bottom: 12px;
}
.mb-3 {
  margin-bottom: 18px;
}
.mb-4 {
  margin-bottom: 26px;
}
.text-2 {
  color: var(--text-2);
}
.text-3 {
  color: var(--text-3);
}
.text-brand {
  color: var(--brand);
}
.text-success {
  color: var(--success);
}
.text-danger {
  color: var(--danger);
}
.text-warning {
  color: var(--warning);
}
.fw-6 {
  font-weight: 600;
}
.fw-7 {
  font-weight: 700;
}
.fs-2 {
  font-size: 12px;
}
.fs-3 {
  font-size: 13px;
}
.fs-4 {
  font-size: 14px;
}
.select-inline {
  width: auto;
  min-width: 150px;
}
.truncate {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.hide-lg {
  display: none;
}

/* Responsive visibility helpers */
@media (max-width: 1023px) {
  .hide-mobile {
    display: none !important;
  }
  .topbar-search {
    display: none;
  }
}
@media (min-width: 1024px) {
  .hide-desktop {
    display: none !important;
  }
}

/* --------------------------------------------------------------------------
   23. Sidebar — professional polish (overrides)
   -------------------------------------------------------------------------- */
.sidebar {
  background:
    radial-gradient(280px 170px at 0% 0%, var(--brand-softer), transparent 60%),
    linear-gradient(180deg, var(--surface) 0%, var(--surface-2) 100%);
}

.sidebar .brand {
  min-height: calc(var(--topbar-h) - 1px);
  padding: 16px 20px;
}

.sidebar .brand-name {
  font-size: 15px;
}

.brand-pill {
  display: inline-block;
  margin-top: 3px;
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--brand);
  background: var(--brand-soft);
  padding: 2px 8px;
  border-radius: var(--radius-full);
}

.sidebar-nav {
  padding: 18px 14px 26px;
  scrollbar-width: thin;
  scrollbar-color: var(--border-strong) transparent;
}

.nav-group + .nav-group {
  margin-top: 24px;
}

.nav-group-title {
  margin: 0 10px 9px;
  font-size: 10.5px;
  letter-spacing: 0.1em;
}

.nav-link {
  position: relative;
  min-height: 44px;
  gap: 12px;
  padding: 9px 10px;
  margin-bottom: 3px;
  border-radius: 12px;
  font-size: 13.5px;
  font-weight: 500;
}

.nav-link::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 3px;
  height: 18px;
  border-radius: 0 6px 6px 0;
  background: var(--brand);
  opacity: 0;
  transform: translateY(-50%) scaleY(0.4);
  transition:
    opacity 0.18s ease,
    transform 0.18s ease;
}

.nav-link:hover {
  background: var(--surface);
  box-shadow: var(--shadow-xs);
  color: var(--text);
}

.nav-link:hover::before {
  opacity: 0.4;
}

.nav-icon {
  width: 32px;
  height: 32px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 9px;
  background: var(--surface-3);
  color: var(--text-2);
  font-size: 14px;
  flex: none;
  transition:
    background 0.16s ease,
    color 0.16s ease,
    box-shadow 0.16s ease;
}

.nav-link:hover .nav-icon {
  background: var(--surface);
  color: var(--text);
}

.nav-link.is-active {
  background: linear-gradient(
    90deg,
    var(--brand-soft),
    color-mix(in srgb, var(--brand-soft) 30%, transparent) 85%,
    transparent
  );
  color: var(--brand);
  font-weight: 600;
}

.nav-link.is-active::before {
  opacity: 1;
  transform: translateY(-50%) scaleY(1);
}

.nav-link.is-active .nav-icon {
  background: var(--brand);
  color: #fff;
  box-shadow: 0 6px 14px -6px color-mix(in srgb, var(--brand) 75%, transparent);
}

/* Collapsed rail polish */
body.sidebar-collapsed .sidebar-nav {
  padding: 18px 14px;
}
body.sidebar-collapsed .nav-group + .nav-group {
  margin-top: 26px;
}

/* Collapsed footer: pro-card tucks down to an icon-only bolt */
body.sidebar-collapsed .sidebar-foot {
  padding: 12px 14px 16px;
}
body.sidebar-collapsed .pro-card {
  display: flex;
  justify-content: center;
  padding: 0;
  background: none;
  box-shadow: none;
  margin-bottom: 8px;
}
body.sidebar-collapsed .pro-card::after,
body.sidebar-collapsed .pro-card h4,
body.sidebar-collapsed .pro-card p,
body.sidebar-collapsed .pro-card-cta {
  display: none;
}
body.sidebar-collapsed .pro-card-bolt {
  position: static;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: 10px;
  background: var(--brand);
  color: #fff;
  font-size: 15px;
  box-shadow: 0 6px 14px -6px color-mix(in srgb, var(--brand) 75%, transparent);
}

/* Footer */
.sidebar-foot {
  padding: 12px 14px 16px;
  border-top: 1px solid var(--border);
  background: color-mix(in srgb, var(--surface) 55%, transparent);
}

.pro-card {
  position: relative;
  overflow: hidden;
  border-radius: 14px;
  padding: 14px 14px 13px;
  margin-bottom: 12px;
  color: #fff;
  background: linear-gradient(
    135deg,
    var(--brand) 0%,
    color-mix(in srgb, var(--brand) 52%, var(--violet)) 130%
  );
  box-shadow: 0 10px 22px -10px
    color-mix(in srgb, var(--brand) 65%, transparent);
}
.pro-card::after {
  content: "";
  position: absolute;
  right: -34px;
  top: -34px;
  width: 96px;
  height: 96px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.14);
}
.pro-card-bolt {
  position: absolute;
  right: 14px;
  top: 14px;
  font-size: 15px;
  opacity: 0.9;
}
.pro-card h4 {
  position: relative;
  font-size: 13px;
  font-weight: 800;
  margin-bottom: 3px;
}
.pro-card p {
  position: relative;
  font-size: 11.5px;
  opacity: 0.85;
  line-height: 1.45;
  margin-bottom: 11px;
}
.pro-card-cta {
  position: relative;
  background: #fff;
  color: var(--brand);
  box-shadow: none;
  font-size: 12.5px;
}
.pro-card-cta:hover {
  background: #f0f5ff;
  color: var(--brand);
}

.user-chip {
  gap: 11px;
  padding: 9px;
  border-radius: 12px;
}
.user-chip:hover {
  background: var(--surface);
  box-shadow: var(--shadow-xs);
}
.user-meta strong {
  font-size: 13px;
}
.user-meta span {
  font-size: 11.5px;
}

@media (max-width: 1023px) {
  .sidebar .brand {
    padding: 16px 20px;
  }
}

/* Screen-reader-only text. Used where a control needs an accessible name but
   the visual design has no room for a visible label, such as the timetable
   class picker and the icon-only action column header. */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Display a span on its own line inside a table cell. */
.d-block {
  display: block;
}

/* Red variant for the room-utilisation bars. The amber variant was already
   used for "getting full", so an over-booked room needed its own tone rather
   than reusing amber for two different meanings. */
.bar-fill--red {
  background: linear-gradient(
    180deg,
    var(--danger),
    color-mix(in srgb, var(--danger) 55%, transparent)
  );
}

/* Timetable grid. Each lesson cell is a button filling the whole cell so the
   click target matches the visual cell, which is what makes the grid editable
   without a separate edit icon on every lesson. */
.tt-cell {
  display: block;
  width: 100%;
  min-height: 54px;
  text-align: left;
  padding: 6px 8px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface-2);
  cursor: pointer;
  font: inherit;
  color: inherit;
  transition: border-color 0.15s ease, background 0.15s ease;
}
.tt-cell:hover {
  border-color: var(--brand);
  background: var(--brand-soft);
}
.tt-cell:focus-visible {
  outline: 2px solid var(--brand);
  outline-offset: 2px;
}
.tt-cell--empty {
  border-style: dashed;
  background: transparent;
}
.tt-cell-add {
  font-size: 12px;
  color: var(--text-3);
  font-weight: 600;
}
.tt-cell-meta {
  display: block;
  margin-top: 4px;
  font-size: 11px;
  color: var(--text-3);
  line-height: 1.35;
}
.tt-cell-meta i {
  font-size: 9px;
}

/* A break spans the week: the label repeats in every day cell rather than
   leaving a confusing empty box. */
.tt-break {
  display: block;
  padding: 8px;
  border-radius: 6px;
  background: var(--surface-3);
  color: var(--text-3);
  font-size: 11px;
  font-weight: 600;
  text-align: center;
}
.tt-break-row td {
  background: var(--surface-3);
}

/* The teacher's own day above the grid. */
.tt-daylist {
  display: grid;
  gap: 8px;
}
.tt-daylist-item {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  padding: 8px 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
}

/* Printing a timetable: drop the controls, keep the grid, and let the sheet
   use the full width instead of the dashboard's max-width. */
@media print {
  .no-print,
  .sidebar,
  .topbar,
  .toolbar,
  .page-actions,
  .card-foot,
  .toast-wrap,
  .modal-backdrop {
    display: none !important;
  }
  .tt-grid {
    min-width: 0 !important;
    font-size: 11px;
  }
  .tt-cell {
    border-color: #999;
    min-height: 40px;
  }
  .tt-cell-add,
  .tt-cell-meta,
  .tt-break {
    color: #444;
  }
}