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

:root {
  --bg-body: #090a0b;
  --bg-sidebar: #0f1113;
  --bg-card: #131518;
  --bg-card-hover: #181b1f;
  --bg-input: #0b0c0e;
  --border: #22262b;
  --border-focus: #dc2626;
  --primary: #dc2626;
  --primary-hover: #ef4444;
  --accent: #d97706;
  --text-main: #f3f4f6;
  --text-muted: #9ca3af;
  --text-dim: #6b7280;
  --success: #10b981;
  --warning: #f59e0b;
  --danger: #ef4444;
  --info: #06b6d4;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
}

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

body {
  background-color: var(--bg-body);
  color: var(--text-main);
  font-family: var(--font-sans);
  font-size: 13.5px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
}

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

/* Modern Clean Sidebar */
.sidebar {
  width: 260px;
  background-color: var(--bg-sidebar);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0;
  bottom: 0;
  left: 0;
  z-index: 100;
}

.sidebar-header {
  padding: 1.25rem 1.25rem 1rem;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 12px;
}

.sidebar-header img {
  height: 38px;
  max-width: 140px;
  object-fit: contain;
}

.sidebar-nav {
  flex: 1;
  padding: 0.75rem 0.6rem;
  overflow-y: auto;
}

.nav-section {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-dim);
  padding: 0.75rem 0.75rem 0.35rem;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 12px;
  color: var(--text-muted);
  text-decoration: none;
  font-size: 13px;
  font-weight: 500;
  border-radius: 6px;
  transition: all 0.15s ease;
  margin-bottom: 2px;
}

.nav-link:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.04);
}

.nav-link.active {
  color: #fff;
  background: rgba(220, 38, 38, 0.12);
  color: #f87171;
  font-weight: 600;
}

.sidebar-footer {
  padding: 1rem 1.25rem;
  border-top: 1px solid var(--border);
  background: rgba(0, 0, 0, 0.2);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* Main Area */
.main-content {
  margin-left: 260px;
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* Header */
.topbar {
  height: 64px;
  background: rgba(15, 17, 19, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 1.75rem;
  position: sticky;
  top: 0;
  z-index: 90;
}

.page-body {
  padding: 1.75rem;
  flex: 1;
}

/* Typography & Titles */
h1, h2, h3, h4, h5 {
  font-weight: 700;
  color: #fff;
  letter-spacing: -0.015em;
}

/* Metric Cards */
.metrics-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
  margin-bottom: 1.75rem;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1.25rem;
  transition: border-color 0.15s ease;
}

.stat-card:hover {
  border-color: #374151;
}

.stat-label {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-dim);
}

.stat-value {
  font-size: 1.75rem;
  font-weight: 700;
  color: #fff;
  margin-top: 4px;
  font-feature-settings: "tnum";
}

/* Tables */
.table-panel {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
}

.table-header-panel {
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}

.data-table th {
  background: rgba(255, 255, 255, 0.015);
  padding: 10px 16px;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  color: var(--text-dim);
  letter-spacing: 0.05em;
  border-bottom: 1px solid var(--border);
}

.data-table td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  color: var(--text-main);
  font-size: 13px;
}

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

.data-table tr:hover td {
  background: rgba(255, 255, 255, 0.02);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 8px 14px;
  font-size: 12.5px;
  font-weight: 600;
  border-radius: 6px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.15s ease;
  text-decoration: none;
}

.btn-primary {
  background: var(--primary);
  color: #fff;
}

.btn-primary:hover {
  background: var(--primary-hover);
}

.btn-outline {
  background: transparent;
  border-color: var(--border);
  color: var(--text-main);
}

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.05);
  border-color: #4b5563;
}

/* Badges */
.badge {
  padding: 3px 8px;
  border-radius: 4px;
  font-size: 10.5px;
  font-weight: 600;
  text-transform: uppercase;
}

.badge-success { background: rgba(16, 185, 129, 0.12); color: #34d399; }
.badge-warning { background: rgba(245, 158, 11, 0.12); color: #fbbf24; }
.badge-danger { background: rgba(239, 68, 68, 0.12); color: #f87171; }
.badge-info { background: rgba(6, 182, 212, 0.12); color: #22d3ee; }

/* Forms */
.form-group {
  margin-bottom: 1rem;
}

.form-label {
  display: block;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 5px;
}

.form-control {
  width: 100%;
  padding: 8px 12px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: #fff;
  font-size: 13px;
  font-family: var(--font-sans);
  transition: border-color 0.15s;
}

.form-control:focus {
  outline: none;
  border-color: var(--primary);
}

/* Modals */
.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(4px);
  z-index: 1000;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}

.modal-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 10px;
  width: 100%;
  max-width: 580px;
  padding: 1.75rem;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.9);
}