:root{
  --bg: #111217;
  --bg-card: #18181b;
  --bg-hover: #1c1c1f;
  --bg-input: #0f1014;
  --text: #ffffff;
  --text-secondary: #d8d9da;
  --muted: #9ea0a5;
  --accent: #5fb3ff;
  --accent-dark: #1f62a2;
  --accent-dim: rgba(95,179,255,.15);
  --call-color: #e0274e;
  --call-bg: rgba(224,39,78,.12);
  --ticket-color: #60a5fa;
  --ticket-bg: rgba(96,165,250,.12);
  --success: #73bf69;
  --warning: #f89e4f;
  --purple: #a78bfa;
  --border: #2b2c30;
  --border-light: #3d3e43;
  --shadow: 0 1px 3px rgba(0,0,0,.3);
  --shadow-lg: 0 4px 12px rgba(0,0,0,.4);
  --radius: 4px;
  --pad: 28px;
  --pad-sm: 20px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --transition: .2s ease;
  --sidebar-width: 240px;
}

*, *::before, *::after { box-sizing: border-box; }
html, body { height: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 15px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Scrollbar */
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--border-light); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--muted); }

a { color: inherit; text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--accent); }

/* ============================================
   SIDEBAR LAYOUT
============================================ */
.container {
  min-height: 100vh;
}

.sidebar {
  width: var(--sidebar-width);
  flex-shrink: 0;
  background: var(--bg-card);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  padding: 0;
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  z-index: 40;
  overflow-y: auto;
}

.sidebar-logo {
  padding: 20px 20px 24px;
  font-size: 16px;
  font-weight: 600;
  letter-spacing: .2px;
  color: var(--text);
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px;
  font-size: 13px;
  font-weight: 500;
  color: var(--muted);
  text-decoration: none;
  transition: all var(--transition);
  border-radius: var(--radius);
  position: relative;
}
.nav-item:hover {
  color: var(--text);
  background: var(--bg-hover);
}
.nav-item.active {
  color: var(--text);
  background: var(--bg-hover);
}
.nav-item.active::before {
  content: '';
  position: absolute;
  left: 0;
  top: 20%;
  height: 60%;
  width: 3px;
  background: var(--accent);
  border-radius: 0 2px 2px 0;
}

.main-content {
  margin-left: var(--sidebar-width);
  min-width: 0;
}

/* ============================================
   LAYOUT
============================================ */
.wrap {
  padding: 32px 48px 40px;
}

/* ============================================
   CARDS
============================================ */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  border-radius: var(--radius);
  padding: var(--pad);
  transition: border-color var(--transition);
}
.card:hover {
  border-color: var(--border-light);
}
.card.primary {
  border-color: var(--accent-dark);
}

.card-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 16px;
}
.card-title {
  font-weight: 500;
  font-size: 17px;
  letter-spacing: .2px;
}
.card-sub {
  color: var(--muted);
  font-size: 12px;
  margin-top: 4px;
}

/* ============================================
   KPI CARDS
============================================ */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
  margin-bottom: 28px;
}

.kpi {
  padding: var(--pad-sm);
}
.kpi.highlight {
  border-color: var(--accent-dark);
}
.kpi.highlight .kpi-value {
  color: var(--accent);
}

.kpi-label {
  color: var(--muted);
  font-size: 12px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: .5px;
}
.kpi-value {
  font-size: 36px;
  font-weight: 500;
  margin-top: 8px;
  line-height: 1.1;
  letter-spacing: -.5px;
  color: var(--text);
}
.kpi-sub {
  color: var(--muted);
  font-size: 11px;
  margin-top: 8px;
}

/* Colored KPI variants */
.kpi-value.call { color: var(--call-color); }
.kpi-value.ticket { color: var(--ticket-color); }
.kpi-value.success { color: var(--success); }
.kpi-value.warning { color: var(--warning); }
.kpi-value.error { color: var(--call-color); }

/* Table cell color variants */
td.success, .success { color: var(--success); }
td.error, .error { color: var(--call-color); }

/* ============================================
   BUTTONS
============================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 10px 18px;
  border-radius: var(--radius);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition);
}
.btn:hover {
  border-color: var(--border-light);
  background: var(--bg-hover);
}
.btn:active {
  background: var(--border);
}
.btn:focus {
  outline: none;
  box-shadow: 0 0 0 2px rgba(95,179,255,.3);
}
.btn.primary, .btn-primary {
  background: var(--accent-dark);
  border-color: var(--accent-dark);
  color: #fff;
}
.btn.primary:hover, .btn-primary:hover {
  background: #245f96;
  border-color: #2a6fad;
}
.btn.secondary {
  background: var(--bg-card);
  border-color: var(--border);
}
.btn.secondary:hover {
  background: var(--bg-hover);
  border-color: var(--border-light);
}

/* ============================================
   FORM CONTROLS
============================================ */
input[type="date"],
input[type="number"],
input[type="text"],
select {
  background: var(--bg-input);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 10px 14px;
  border-radius: var(--radius);
  font-size: 12px;
  font-family: inherit;
  transition: border-color var(--transition);
}
input[type="date"]:hover,
input[type="number"]:hover,
input[type="text"]:hover,
select:hover {
  border-color: var(--border-light);
}
input[type="date"]:focus,
input[type="number"]:focus,
input[type="text"]:focus,
select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 2px rgba(95,179,255,.15);
}

/* ============================================
   TABLES
============================================ */
.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}
.data-table th {
  text-align: left;
  padding: 12px 14px;
  font-weight: 600;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: .5px;
  color: var(--muted);
  border-bottom: 1px solid var(--border);
  background: var(--bg-hover);
  position: sticky;
  top: 0;
}
.data-table td {
  padding: 12px 14px;
  border-bottom: 1px solid #212227;
  transition: background var(--transition);
}
.data-table tbody tr {
  transition: background var(--transition);
}
.data-table tbody tr:hover {
  background: var(--bg-hover);
}
.data-table tbody tr.clickable {
  cursor: pointer;
}
.data-table tbody tr.clickable:hover {
  background: var(--bg-hover);
}

/* ============================================
   TOOLBAR
============================================ */
.toolbar {
  display: flex;
  gap: 16px;
  align-items: flex-end;
  justify-content: space-between;
  flex-wrap: wrap;
  margin-bottom: 20px;
}
.toolbar-controls {
  display: flex;
  gap: 12px;
  align-items: flex-end;
  flex-wrap: wrap;
}
.toolbar-field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.toolbar-label {
  font-size: 11px;
  font-weight: 500;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: .5px;
}

/* ============================================
   CHART CONTAINERS
============================================ */
.chart-container {
  position: relative;
  width: 100%;
  min-height: 500px;
}
.chart-container.small { min-height: 370px; }
.chart-container.large { min-height: 600px; }
.grid-3 .chart-container { min-height: 390px; }
.grid-3 .chart-container.small { min-height: 310px; }

/* ============================================
   PROGRESS BARS
============================================ */
.progress-bar {
  height: 20px;
  border-radius: var(--radius);
  background: rgba(255,255,255,.06);
  overflow: hidden;
  position: relative;
}
.progress-fill {
  height: 100%;
  border-radius: var(--radius);
  background: var(--accent);
  transition: width .5s ease;
}
.progress-fill.warning {
  background: var(--warning);
}
.progress-fill.danger {
  background: var(--call-color);
}

/* ============================================
   BADGES & TAGS
============================================ */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 3px 8px;
  border-radius: var(--radius);
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .3px;
}
.badge.billable {
  background: rgba(95,179,255,.15);
  color: var(--accent);
}
.badge.non-billable {
  background: rgba(248,158,79,.2);
  color: var(--warning);
}

/* ============================================
   GRID LAYOUTS
============================================ */
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}
.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.grid-3 .card { padding: var(--pad-sm); }
.grid-3 .card-title { font-size: 14px; }
.grid-3 .card-sub { font-size: 11px; }
.grid-auto {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 20px;
}

/* ============================================
   LOADING STATES
============================================ */
.loading-overlay {
  position: fixed;
  inset: 0;
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0,0,0,.6);
  backdrop-filter: blur(8px);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition);
}
.loading-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.spinner {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  border: 3px solid rgba(255,255,255,.15);
  border-top-color: var(--accent);
  animation: spin .8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

@keyframes loading-bar {
  0% { transform: translateX(-100%); }
  50% { transform: translateX(233%); }
  100% { transform: translateX(-100%); }
}

/* ============================================
   MODAL
============================================ */
.modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 9998;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0,0,0,.6);
  backdrop-filter: blur(8px);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition);
}
.modal-overlay.active {
  opacity: 1;
  pointer-events: auto;
}
.modal-content {
  width: min(640px, calc(100vw - 48px));
  max-height: calc(100vh - 48px);
  overflow: auto;
}

/* ============================================
   HELP BUTTON & MODAL
============================================ */
.help-btn {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: transparent;
  border: 1px solid var(--border);
  color: var(--muted);
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  margin: auto 20px 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition);
  flex-shrink: 0;
}
.help-btn:hover {
  color: var(--text);
  border-color: var(--accent);
  background: var(--bg-hover);
}

.help-modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 9998;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0,0,0,.6);
  backdrop-filter: blur(8px);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition);
}
.help-modal-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.help-modal {
  width: min(720px, calc(100vw - 48px));
  max-height: calc(100vh - 48px);
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}
.help-modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}
.help-modal-header h2 {
  margin: 0;
  font-size: 15px;
  font-weight: 600;
}
.help-modal-close {
  background: none;
  border: none;
  color: var(--muted);
  font-size: 20px;
  cursor: pointer;
  padding: 0;
  line-height: 1;
  transition: color var(--transition);
}
.help-modal-close:hover { color: var(--text); }

.help-modal-body {
  padding: 20px;
  overflow-y: auto;
  font-size: 13px;
  line-height: 1.7;
  color: var(--text-secondary);
}
.help-modal-body h3 {
  color: var(--text);
  font-size: 14px;
  font-weight: 600;
  margin: 20px 0 8px;
}
.help-modal-body h3:first-child { margin-top: 0; }
.help-modal-body p { margin: 0 0 10px; }
.help-modal-body .formula {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 8px 12px;
  font-family: "SF Mono", "Cascadia Code", Consolas, monospace;
  font-size: 12px;
  color: var(--accent);
  margin: 6px 0 12px;
  display: block;
}

/* ============================================
   BADGE VARIANTS
============================================ */
.badge.success { background: rgba(115,191,105,.15); color: var(--success); }
.badge.danger  { background: rgba(224,39,78,.15);   color: var(--call-color); }
.badge.warning { background: rgba(248,158,79,.15);  color: var(--warning); }
.badge.info    { background: rgba(95,179,255,.15);  color: var(--accent); }
.badge.neutral { background: rgba(158,160,165,.15); color: var(--muted); }

/* ============================================
   FADE-IN ANIMATIONS
============================================ */
@keyframes dd-fade-in {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}
.dd-animate-fade-in { animation: dd-fade-in .3s ease both; }
.dd-stagger-1 { animation-delay: .05s; }
.dd-stagger-2 { animation-delay: .10s; }
.dd-stagger-3 { animation-delay: .15s; }
.dd-stagger-4 { animation-delay: .20s; }
.dd-stagger-5 { animation-delay: .25s; }
.dd-stagger-6 { animation-delay: .30s; }

/* ============================================
   UTILITY CLASSES
============================================ */
.dd-flex           { display: flex; }
.dd-flex-col       { flex-direction: column; }
.dd-flex-center    { align-items: center; justify-content: center; }
.dd-flex-between   { display: flex; align-items: center; justify-content: space-between; }
.dd-flex-wrap      { flex-wrap: wrap; }

.dd-grid           { display: grid; }
.dd-grid-cols-2    { grid-template-columns: repeat(2, 1fr); }
.dd-grid-cols-3    { grid-template-columns: repeat(3, 1fr); }
.dd-grid-cols-4    { grid-template-columns: repeat(4, 1fr); }

.dd-gap-sm  { gap: 8px; }
.dd-gap-md  { gap: 12px; }
.dd-gap-lg  { gap: 16px; }
.dd-gap-xl  { gap: 24px; }

.dd-p-xs  { padding: 4px; }
.dd-p-sm  { padding: 8px; }
.dd-p-md  { padding: 12px; }
.dd-p-lg  { padding: 16px; }
.dd-p-xl  { padding: 24px; }
.dd-m-xs  { margin: 4px; }
.dd-m-sm  { margin: 8px; }
.dd-m-md  { margin: 12px; }
.dd-m-lg  { margin: 16px; }
.dd-m-xl  { margin: 24px; }
.dd-mb-xs { margin-bottom: 4px; }
.dd-mb-sm { margin-bottom: 8px; }
.dd-mb-md { margin-bottom: 12px; }
.dd-mb-lg { margin-bottom: 16px; }
.dd-mb-xl { margin-bottom: 24px; }
.dd-mt-xs { margin-top: 4px; }
.dd-mt-sm { margin-top: 8px; }
.dd-mt-md { margin-top: 12px; }
.dd-mt-lg { margin-top: 16px; }
.dd-mt-xl { margin-top: 24px; }

.dd-text-xs    { font-size: 11px; }
.dd-text-sm    { font-size: 12px; }
.dd-text-md    { font-size: 14px; }
.dd-text-lg    { font-size: 16px; }
.dd-text-xl    { font-size: 18px; }
.dd-font-bold  { font-weight: 700; }
.dd-text-muted { color: var(--muted); }
.dd-uppercase  { text-transform: uppercase; }
.dd-text-center{ text-align: center; }

/* ============================================
   RESPONSIVE
============================================ */
@media (max-width: 1024px) {
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .container { flex-direction: column; }
  .sidebar {
    width: 100%;
    height: auto;
    position: static;
    flex-direction: row;
    flex-wrap: wrap;
    border-right: none;
    border-bottom: 1px solid var(--border);
    align-items: center;
  }
  .main-content {
    margin-left: 0;
  }
  .sidebar-logo {
    padding: 12px 16px;
  }
  .nav-item {
    border-bottom: 2px solid transparent;
    border-radius: 0;
    padding: 10px 14px;
  }
  .nav-item.active::before {
    display: none;
  }
  .nav-item.active {
    border-bottom-color: var(--accent);
  }
  .help-btn {
    margin: 0 14px 0 auto;
  }
  .wrap { padding: 16px; }
  .grid-2, .grid-3 { grid-template-columns: 1fr; }
  .toolbar {
    flex-direction: column;
    align-items: stretch;
  }
  .kpi-value { font-size: 24px; }
}
@media (max-width: 480px) {
  .nav-item {
    padding: 8px 10px;
    font-size: 12px;
  }
}