@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700;800&family=Inter:wght@300;400;500;600;700&display=swap');

:root {
  --bg-primary: #0b0d19;
  --bg-radial: radial-gradient(circle at top center, #1b213e 0%, #0b0d19 80%);
  --card-bg: rgba(20, 26, 48, 0.45);
  --card-bg-hover: rgba(28, 35, 65, 0.6);
  --card-border: rgba(255, 255, 255, 0.08);
  --card-border-active: rgba(0, 242, 254, 0.3);
  
  --text-primary: #f3f4f6;
  --text-secondary: #9ca3af;
  --text-dim: #6b7280;
  
  --color-cyan: #00f2fe;
  --color-violet: #7f00ff;
  --color-gradient-primary: linear-gradient(135deg, #00f2fe 0%, #4facfe 100%);
  --color-gradient-violet: linear-gradient(135deg, #7f00ff 0%, #e100ff 100%);
  --color-gradient-amber: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
  --color-gradient-emerald: linear-gradient(135deg, #10b981 0%, #059669 100%);
  --color-gradient-rose: linear-gradient(135deg, #f43f5e 0%, #e11d48 100%);

  --shadow-glow-cyan: 0 0 20px rgba(0, 242, 254, 0.15);
  --shadow-glow-violet: 0 0 20px rgba(127, 0, 255, 0.15);
  --shadow-card: 0 8px 32px 0 rgba(0, 0, 0, 0.37);

  --font-display: 'Outfit', 'Inter', sans-serif;
  --font-sans: 'Inter', sans-serif;
  --radius-lg: 16px;
  --radius-md: 10px;
  --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  background-image: var(--bg-radial);
  background-attachment: fixed;
  color: var(--text-primary);
  min-height: 100vh;
  overflow-x: hidden;
  padding: 2.5rem 1.5rem;
  line-height: 1.5;
}

/* Scrollbar styling */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}
::-webkit-scrollbar-track {
  background: var(--bg-primary);
}
::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-md);
}
::-webkit-scrollbar-thumb:hover {
  background: var(--color-cyan);
}

.container {
  max-width: 1400px;
  margin: 0 auto;
}

/* Header section */
header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 2.5rem;
  flex-wrap: wrap;
  gap: 1.5rem;
}

.header-title h1 {
  font-family: var(--font-display);
  font-size: 2.25rem;
  font-weight: 800;
  background: linear-gradient(to right, #ffffff, #a855f7, #00f2fe);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  letter-spacing: -0.5px;
  margin-bottom: 0.25rem;
}

.header-title p {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

.header-title span.badge {
  background: rgba(0, 242, 254, 0.1);
  color: var(--color-cyan);
  border: 1px solid rgba(0, 242, 254, 0.2);
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-md);
  font-size: 0.75rem;
  font-weight: 600;
  margin-left: 0.5rem;
  vertical-align: middle;
}

/* Tabs selector */
.month-selector {
  display: flex;
  background: rgba(20, 26, 48, 0.6);
  border: 1px solid var(--card-border);
  padding: 0.35rem;
  border-radius: 30px;
  backdrop-filter: blur(12px);
  box-shadow: var(--shadow-card);
}

.tab-btn {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 600;
  padding: 0.6rem 1.4rem;
  border-radius: 25px;
  cursor: pointer;
  transition: var(--transition-smooth);
}

.tab-btn:hover {
  color: var(--text-primary);
}

.tab-btn.active {
  background: var(--color-gradient-primary);
  color: #0b0d19;
  box-shadow: 0 4px 15px rgba(0, 242, 254, 0.3);
}

/* Grid configurations */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
  margin-bottom: 2rem;
}

/* Glass Card */
.glass-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  padding: 1.5rem;
  box-shadow: var(--shadow-card);
  transition: var(--transition-smooth);
  position: relative;
  overflow: hidden;
}

.glass-card:hover {
  transform: translateY(-4px);
  background: var(--card-bg-hover);
  border-color: rgba(255, 255, 255, 0.12);
}

.glass-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: transparent;
  transition: var(--transition-smooth);
}

.glass-card.cyan::before { background: var(--color-gradient-primary); }
.glass-card.violet::before { background: var(--color-gradient-violet); }
.glass-card.amber::before { background: var(--color-gradient-amber); }
.glass-card.emerald::before { background: var(--color-gradient-emerald); }
.glass-card.rose::before { background: var(--color-gradient-rose); }

/* KPI elements */
.kpi-card {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

.kpi-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
}

.kpi-icon.cyan { background: rgba(0, 242, 254, 0.1); color: var(--color-cyan); }
.kpi-icon.violet { background: rgba(168, 85, 247, 0.1); color: var(--accent-violet); }
.kpi-icon.amber { background: rgba(245, 158, 11, 0.1); color: var(--accent-gold); }
.kpi-icon.emerald { background: rgba(16, 185, 129, 0.1); color: var(--accent-emerald); }

.kpi-info {
  display: flex;
  flex-direction: column;
}

.kpi-info span.kpi-label {
  color: var(--text-secondary);
  font-size: 0.85rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 0.25rem;
}

.kpi-info h2.kpi-value {
  font-family: var(--font-display);
  font-size: 1.75rem;
  font-weight: 800;
  letter-spacing: -0.5px;
}

/* Subtitles or tiny info inside KPI */
.kpi-subinfo {
  margin-top: 0.25rem;
  font-size: 0.75rem;
  color: var(--text-dim);
}

.kpi-subinfo span.trend-up { color: var(--accent-emerald); font-weight: 600; }
.kpi-subinfo span.trend-down { color: var(--accent-rose); font-weight: 600; }

/* Main chart layout */
.charts-grid {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 1.5rem;
  margin-bottom: 2rem;
}

@media (max-width: 1024px) {
  .charts-grid {
    grid-template-columns: 1fr;
  }
}

.chart-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.25rem;
}

.chart-header h3 {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: -0.2px;
}

.chart-body {
  position: relative;
  height: 320px;
  width: 100%;
}

.chart-legends-container {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 0.75rem;
  margin-top: 1rem;
}

.donut-charts-flex {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  height: 100%;
  justify-content: space-between;
}

/* Custom donut display layout inside the column card */
.donut-segment {
  display: grid;
  grid-template-columns: 1.2fr 1.8fr;
  gap: 1rem;
  align-items: center;
}

.donut-chart-container {
  height: 130px;
  position: relative;
}

/* Rankings & lists sections */
.rankings-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.rank-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.25rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  padding-bottom: 0.75rem;
}

.rank-header h3 {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.rank-header h3 i {
  color: var(--color-cyan);
}

.rank-list {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

/* Dynamic Rank Item */
.rank-item {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  padding: 0.4rem 0;
}

.rank-item-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.rank-item-left {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  max-width: 70%;
}

/* Badge numbering */
.rank-number {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 800;
  flex-shrink: 0;
}

.rank-number.gold { background: linear-gradient(135deg, #ffe259 0%, #ffa751 100%); color: #0b0d19; }
.rank-number.silver { background: linear-gradient(135deg, #eef2f3 0%, #8e9eab 100%); color: #0b0d19; }
.rank-number.bronze { background: linear-gradient(135deg, #f0a30a 0%, #9e5b00 100%); color: var(--text-primary); }
.rank-number.normal { background: rgba(255, 255, 255, 0.08); color: var(--text-secondary); border: 1px solid var(--card-border); }

.rank-name {
  font-size: 0.9rem;
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  color: var(--text-primary);
}

.rank-value {
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-primary);
  text-align: right;
}

.rank-qty {
  font-size: 0.7rem;
  color: var(--text-dim);
  text-align: right;
  display: block;
}

/* Custom Visual Meter (Bar showing proportions) */
.rank-meter-bg {
  width: 100%;
  height: 6px;
  background: rgba(255, 255, 255, 0.04);
  border-radius: 3px;
  overflow: hidden;
}

.rank-meter-fill {
  height: 100%;
  border-radius: 3px;
  width: 0%; /* Dynamic */
  transition: width 1s cubic-bezier(0.4, 0, 0.2, 1);
}

.rank-meter-fill.cyan { background: var(--color-gradient-primary); }
.rank-meter-fill.violet { background: var(--color-gradient-violet); }
.rank-meter-fill.amber { background: var(--color-gradient-amber); }

/* Highlight Bottom Row: Peak Date & Conversion metrics */
.footer-row-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  margin-bottom: 2.5rem;
}

@media (max-width: 768px) {
  .footer-row-grid {
    grid-template-columns: 1fr;
  }
}

.highlight-card {
  border: 1px solid var(--card-border-active);
  box-shadow: var(--shadow-glow-cyan);
}

.highlight-card::before {
  background: var(--color-gradient-primary) !important;
}

.peak-details-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 1.5rem;
  align-items: center;
  height: 100%;
}

.peak-stats-box {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.peak-date-badge {
  background: rgba(0, 242, 254, 0.1);
  border: 1px solid rgba(0, 242, 254, 0.25);
  color: var(--color-cyan);
  border-radius: var(--radius-md);
  padding: 0.5rem 1rem;
  text-align: center;
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 800;
  display: inline-block;
  margin-top: 0.5rem;
  letter-spacing: 0.5px;
}

.peak-details-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  border-left: 1px solid rgba(255, 255, 255, 0.08);
  padding-left: 1.5rem;
}

.peak-detail-item {
  display: flex;
  flex-direction: column;
}

.peak-detail-item span.label {
  font-size: 0.75rem;
  color: var(--text-secondary);
  margin-bottom: 0.15rem;
}

.peak-detail-item span.value {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-primary);
}

/* Segment lists (Custom lists for legend styling) */
.legend-list {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.legend-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8rem;
}

.legend-color-label {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-secondary);
  font-weight: 500;
}

.legend-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  flex-shrink: 0;
}

.legend-val {
  font-family: var(--font-display);
  font-weight: 700;
  color: var(--text-primary);
}

/* User avatar helper */
.avatar-placeholder {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--color-gradient-violet);
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.6rem;
  font-weight: 800;
  font-family: var(--font-display);
  text-transform: uppercase;
}

/* Loading overlay */
.loading-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--bg-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  transition: opacity 0.5s ease-out;
}

.loading-spinner {
  width: 50px;
  height: 50px;
  border: 3px solid rgba(0, 242, 254, 0.1);
  border-top: 3px solid var(--color-cyan);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

/* Dynamic updates animation */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.animate-fade-in {
  animation: fadeInUp 0.4s ease-out forwards;
}