/* 
  Sales Funnel Dashboard Stylesheet
  Design style: Premium Modern Dark Glassmorphism
*/

/* --- Design Tokens --- */
:root {
  --font-sans: 'Outfit', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  
  /* Color Palette (Harmonious Slate + Vibrant Accents) */
  --bg-primary: #0b0f19;
  --bg-secondary: #121826;
  --bg-card: rgba(22, 30, 49, 0.7);
  --border-card: rgba(255, 255, 255, 0.08);
  --border-input: rgba(255, 255, 255, 0.12);
  
  --text-primary: #f3f4f6;
  --text-secondary: #9ca3af;
  --text-muted: #6b7280;
  
  /* Functional Accents (HSL) */
  --accent-leads: 217, 91%, 60%;      /* Blue */
  --accent-calls: 262, 83%, 68%;      /* Purple */
  --accent-wins: 142, 72%, 47%;       /* Emerald Green */
  --accent-losses: 0, 72%, 50%;       /* Red */
  --accent-revenue: 38, 92%, 50%;      /* Amber/Gold */
  
  /* Animations */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.25s ease;
}

/* --- Base Layout --- */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  background-image: 
    radial-gradient(circle at 10% 20%, rgba(99, 102, 241, 0.08) 0%, transparent 40%),
    radial-gradient(circle at 90% 80%, rgba(16, 185, 129, 0.06) 0%, transparent 45%);
  color: var(--text-primary);
  min-height: 100vh;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  padding-bottom: 2rem;
}

.app-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 2rem 1.5rem;
}

/* --- Header & Filter Bar --- */
.dashboard-header {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  margin-bottom: 2rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border-card);
}

@media (min-width: 1024px) {
  .dashboard-header {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
  }
}

.header-branding {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.logo-icon {
  background: linear-gradient(135deg, hsl(var(--accent-leads)), hsl(var(--accent-calls)));
  color: #fff;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 14px rgba(99, 102, 241, 0.4);
}

.header-branding h1 {
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.025em;
  background: linear-gradient(120deg, #ffffff, #e5e7eb);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.header-branding .subtitle {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.filter-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  gap: 1rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border-card);
  padding: 1rem;
  border-radius: 16px;
  backdrop-filter: blur(10px);
}

.filter-group {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.filter-group label {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-secondary);
}

.filter-group input[type="date"],
.filter-group select {
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  border: 1px solid var(--border-input);
  color: var(--text-primary);
  padding: 0.5rem 0.75rem;
  font-size: 0.85rem;
  border-radius: 8px;
  outline: none;
  transition: border-color var(--transition-fast);
  min-width: 140px;
}

.filter-group input[type="date"]:focus,
.filter-group select:focus {
  border-color: hsl(var(--accent-leads));
}

/* --- Buttons --- */
.btn-primary, .btn-secondary {
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 0.85rem;
  padding: 0.55rem 1rem;
  border-radius: 8px;
  border: none;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn-primary {
  background-color: hsl(var(--accent-leads));
  color: #ffffff;
}

.btn-primary:hover {
  background-color: hsl(var(--accent-leads), 0.85);
  box-shadow: 0 4px 12px rgba(59, 130, 246, 0.25);
}

.btn-secondary {
  background-color: transparent;
  border: 1px solid var(--border-input);
  color: var(--text-primary);
}

.btn-secondary:hover {
  background-color: rgba(255, 255, 255, 0.06);
  border-color: var(--text-secondary);
}

/* --- KPI Cards Grid --- */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
  margin-bottom: 2rem;
}

@media (min-width: 768px) {
  .kpi-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 1200px) {
  .kpi-grid {
    grid-template-columns: repeat(6, 1fr);
  }
}

.kpi-card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: 16px;
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
  backdrop-filter: blur(8px);
}

.kpi-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.25);
  border-color: rgba(255, 255, 255, 0.12);
}

.kpi-icon {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* KPI Accent Backgrounds & Text Colors */
.leads-bg { background: rgba(59, 130, 246, 0.15); color: hsl(var(--accent-leads)); }
.calls-bg { background: rgba(167, 139, 250, 0.15); color: hsl(var(--accent-calls)); }
.wins-bg { background: rgba(16, 185, 129, 0.15); color: hsl(var(--accent-wins)); }
.revenue-bg { background: rgba(245, 158, 11, 0.15); color: hsl(var(--accent-revenue)); }
.rate-lead-bg { background: rgba(59, 130, 246, 0.1); color: hsl(var(--accent-leads)); }
.rate-call-bg { background: rgba(167, 139, 250, 0.1); color: hsl(var(--accent-calls)); }

.kpi-details {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}

.kpi-title {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.025em;
}

.kpi-value {
  font-size: 1.75rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  color: #ffffff;
}

.kpi-trend {
  font-size: 0.75rem;
  font-weight: 500;
}

.trend-neutral { color: var(--text-muted); }
.trend-revenue { color: hsl(var(--accent-revenue)); }

/* --- Charts Area --- */
.charts-section {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.chart-container {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: 20px;
  padding: 1.5rem;
  backdrop-filter: blur(8px);
}

.chart-header {
  margin-bottom: 1.5rem;
}

.chart-header h3 {
  font-size: 1.1rem;
  font-weight: 600;
  color: #ffffff;
}

.chart-subtitle {
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.chart-wrapper {
  position: relative;
  width: 100%;
  min-height: 250px;
  max-height: 400px;
}

.time-series-container .chart-wrapper {
  height: 320px;
}

.breakdown-charts-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

@media (min-width: 768px) {
  .breakdown-charts-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* --- Loader & Error Overlay --- */
.dashboard-content {
  position: relative;
  min-height: 400px;
}

.loader-overlay, .error-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(11, 15, 25, 0.9);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  z-index: 10;
  border-radius: 20px;
  gap: 1rem;
  transition: opacity var(--transition-normal);
}

.hidden {
  display: none !important;
  opacity: 0;
  pointer-events: none;
}

.spinner {
  width: 40px;
  height: 40px;
  border: 4px solid rgba(255, 255, 255, 0.1);
  border-left-color: hsl(var(--accent-leads));
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.error-icon {
  font-size: 2.5rem;
}

.error-overlay h3 {
  font-weight: 600;
  color: #fff;
}

.error-overlay p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  max-width: 350px;
  text-align: center;
}

/* --- Sales Rep Performance Section --- */
.rep-performance-section {
  margin-top: 1.5rem;
}

.table-container {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: 20px;
  padding: 1.5rem;
  backdrop-filter: blur(8px);
}

.table-header {
  margin-bottom: 1.25rem;
}

.table-header h3 {
  font-size: 1.1rem;
  font-weight: 600;
  color: #ffffff;
}

.table-subtitle {
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.table-responsive {
  width: 100%;
  overflow-x: auto;
  border-radius: 12px;
  border: 1px solid var(--border-card);
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
  text-align: left;
}

th, td {
  padding: 0.85rem 1rem;
  border-bottom: 1px solid var(--border-card);
}

th {
  background-color: var(--bg-secondary);
  color: var(--text-secondary);
  font-weight: 600;
  text-transform: uppercase;
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  user-select: none;
}

th.sortable {
  cursor: pointer;
  transition: color var(--transition-fast), background-color var(--transition-fast);
}

th.sortable:hover {
  color: #ffffff;
  background-color: rgba(255, 255, 255, 0.04);
}

th.active-sort {
  color: hsl(var(--accent-leads));
}

th.active-sort .sort-icon {
  opacity: 1;
}

.sort-icon {
  margin-left: 4px;
  font-size: 0.8rem;
  opacity: 0.3;
  display: inline-block;
  transition: transform var(--transition-fast);
}

th.sort-asc .sort-icon {
  content: "↓";
  opacity: 1;
  color: hsl(var(--accent-leads));
}

th.sort-desc .sort-icon {
  content: "↑";
  opacity: 1;
  color: hsl(var(--accent-leads));
}

tr:last-child td {
  border-bottom: none;
}

tbody tr {
  transition: background-color var(--transition-fast);
}

tbody tr:hover {
  background-color: rgba(255, 255, 255, 0.02);
}

.text-left { text-align: left; }
.text-right { text-align: right; }