:root {
  --bg: #f8f9fa;
  --bg-card: #ffffff;
  --border: #dee2e6;
  --text: #212529;
  --text-muted: #6c757d;
  --primary: #0d6efd;
  --primary-hover: #0b5ed7;
  --danger: #dc3545;
  --success: #198754;
  --warning: #ffc107;
  --info: #0dcaf0;
  --sidebar-bg: #1e293b;
  --sidebar-text: #cbd5e1;
  --sidebar-active: #3b82f6;
  --radius: 6px;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
}

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

.sidebar {
  width: 240px;
  background: var(--sidebar-bg);
  color: var(--sidebar-text);
  padding: 1rem 0;
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
}

.sidebar-brand {
  padding: 0.5rem 1.25rem 1.5rem;
  font-size: 1.25rem;
  font-weight: 700;
  color: #fff;
  border-bottom: 1px solid rgba(255,255,255,0.1);
  margin-bottom: 0.5rem;
}

.sidebar-nav { list-style: none; flex: 1; }

.sidebar-nav a {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.625rem 1.25rem;
  color: var(--sidebar-text);
  text-decoration: none;
  font-size: 0.875rem;
  transition: background 0.15s;
}

.sidebar-nav a:hover { background: rgba(255,255,255,0.08); }
.sidebar-nav a.active { background: var(--sidebar-active); color: #fff; }

.sidebar-section {
  padding: 1rem 1.25rem 0.25rem;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: rgba(255,255,255,0.4);
}

.sidebar-user {
  padding: 0.75rem 1.25rem;
  border-top: 1px solid rgba(255,255,255,0.1);
  font-size: 0.8rem;
}

.main { flex: 1; display: flex; flex-direction: column; }

.topbar {
  background: var(--bg-card);
  border-bottom: 1px solid var(--border);
  padding: 0.75rem 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.topbar h1 { font-size: 1.125rem; font-weight: 600; }

.content { padding: 1.5rem; flex: 1; }

/* Cards */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
  margin-bottom: 1rem;
}

.card-header {
  font-weight: 600;
  margin-bottom: 0.75rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border);
}

/* Stats grid */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
  text-align: center;
}

.stat-value { font-size: 2rem; font-weight: 700; }
.stat-label { font-size: 0.8rem; color: var(--text-muted); text-transform: uppercase; }

/* Tables */
.table-wrap { overflow-x: auto; }

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
}

th, td {
  padding: 0.625rem 0.75rem;
  text-align: left;
  border-bottom: 1px solid var(--border);
}

th {
  background: var(--bg);
  font-weight: 600;
  font-size: 0.75rem;
  text-transform: uppercase;
  color: var(--text-muted);
}

tr:hover { background: rgba(0,0,0,0.02); }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  padding: 0.5rem 1rem;
  border: 1px solid transparent;
  border-radius: var(--radius);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  text-decoration: none;
  transition: background 0.15s;
}

.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-hover); }
.btn-danger { background: var(--danger); color: #fff; }
.btn-sm { padding: 0.25rem 0.625rem; font-size: 0.8rem; }
.btn-outline {
  background: transparent;
  border-color: var(--border);
  color: var(--text);
}
.btn-outline:hover { background: var(--bg); }

/* Forms */
.form-group { margin-bottom: 1rem; }
.form-group label {
  display: block;
  margin-bottom: 0.25rem;
  font-size: 0.875rem;
  font-weight: 500;
}

.form-control {
  width: 100%;
  padding: 0.5rem 0.75rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 0.875rem;
  background: var(--bg-card);
  color: var(--text);
}

.form-control:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(13,110,253,0.15);
}

select.form-control { appearance: auto; }

/* Badges */
.badge {
  display: inline-block;
  padding: 0.15rem 0.5rem;
  border-radius: 10px;
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
}

.badge-success { background: #d1e7dd; color: #0f5132; }
.badge-danger { background: #f8d7da; color: #842029; }
.badge-warning { background: #fff3cd; color: #664d03; }
.badge-info { background: #cff4fc; color: #055160; }
.badge-secondary { background: #e2e3e5; color: #41464b; }

/* Timeline */
.timeline { list-style: none; }

.timeline-item {
  display: flex;
  gap: 1rem;
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--border);
}

.timeline-time {
  flex-shrink: 0;
  width: 140px;
  font-size: 0.8rem;
  color: var(--text-muted);
}

.timeline-content { flex: 1; font-size: 0.875rem; }
.timeline-source {
  font-size: 0.7rem;
  text-transform: uppercase;
  font-weight: 600;
}

/* Breadcrumb */
.breadcrumb {
  display: flex;
  gap: 0.25rem;
  list-style: none;
  font-size: 0.875rem;
  margin-bottom: 1rem;
}

.breadcrumb li + li::before { content: "/"; margin-right: 0.25rem; color: var(--text-muted); }
.breadcrumb a { color: var(--primary); text-decoration: none; }

/* Alerts/notifications */
.alert {
  padding: 0.75rem 1rem;
  border-radius: var(--radius);
  margin-bottom: 1rem;
  font-size: 0.875rem;
}

.alert-danger { background: #f8d7da; color: #842029; border: 1px solid #f5c2c7; }
.alert-success { background: #d1e7dd; color: #0f5132; border: 1px solid #badbcc; }

/* File browser */
.file-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 0.75rem;
}

.file-item {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem;
  text-align: center;
  cursor: pointer;
  transition: border-color 0.15s;
}

.file-item:hover { border-color: var(--primary); }
.file-icon { font-size: 2rem; margin-bottom: 0.5rem; }
.file-name { font-size: 0.8rem; word-break: break-all; }

/* Login page */
.login-page {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  background: var(--sidebar-bg);
}

.login-box {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 2rem;
  width: 100%;
  max-width: 380px;
  box-shadow: 0 4px 24px rgba(0,0,0,0.2);
}

.login-box h1 {
  text-align: center;
  margin-bottom: 1.5rem;
  font-size: 1.5rem;
}

/* Utility */
.text-muted { color: var(--text-muted); }
.text-right { text-align: right; }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mt-1 { margin-top: 0.5rem; }
.d-flex { display: flex; }
.gap-1 { gap: 0.5rem; }
.justify-between { justify-content: space-between; }
.align-center { align-items: center; }

/* HTMX indicator */
.htmx-indicator { display: none; }
.htmx-request .htmx-indicator { display: inline-block; }
.htmx-request.htmx-indicator { display: inline-block; }