/* Reset & Base */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg: #0a0a0a;
  --bg-card: #141414;
  --bg-card-hover: #1a1a1a;
  --border: #222;
  --border-light: #333;
  --text: #f0f0f0;
  --text-muted: #888;
  --text-dim: #555;
  --accent: #2563eb;
  --accent-hover: #3b82f6;
  --purple: #7c3aed;
  --orange: #f59e0b;
  --green: #22c55e;
  --red: #ef4444;
  --radius: 10px;
  --radius-sm: 6px;
  --sidebar-w: 240px;
  --font: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}

html { font-size: 15px; }
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

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

/* Sidebar */
.sidebar {
  width: var(--sidebar-w);
  background: var(--bg-card);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  padding: 24px 16px;
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  z-index: 10;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 0 8px 24px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 24px;
}

.logo-icon {
  font-size: 20px;
  color: var(--accent);
}

.logo-text {
  font-weight: 700;
  font-size: 1.1rem;
  letter-spacing: -0.02em;
}

.nav {
  display: flex;
  flex-direction: column;
  gap: 4px;
  flex: 1;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  transition: all 0.15s;
}

.nav-item:hover {
  color: var(--text);
  background: rgba(255,255,255,0.04);
}

.nav-item.active {
  color: var(--text);
  background: rgba(37, 99, 235, 0.12);
}

.sidebar-footer {
  border-top: 1px solid var(--border);
  padding-top: 16px;
}

.user-badge {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 4px 8px;
}

.avatar {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 700;
  color: white;
}

.user-name { font-size: 0.85rem; font-weight: 600; }
.user-role { font-size: 0.75rem; color: var(--text-muted); }

/* Main */
.main {
  flex: 1;
  margin-left: var(--sidebar-w);
  padding: 32px 40px;
  max-width: 1200px;
}

/* Views */
.view { display: none; }
.view.active { display: block; }

.view-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 32px;
}

.view-header h1 {
  font-size: 1.8rem;
  font-weight: 700;
  letter-spacing: -0.03em;
}

.subtitle {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-top: 4px;
}

.header-date {
  color: var(--text-muted);
  font-size: 0.85rem;
  padding-top: 8px;
}

/* KPI Grid */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-bottom: 24px;
}

.kpi-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
}

.kpi-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-weight: 500;
  margin-bottom: 8px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.kpi-value {
  font-size: 1.8rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.kpi-sub {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 4px;
}

.kpi-sub.positive { color: var(--green); }
.kpi-sub.negative { color: var(--red); }

.progress-bar {
  height: 4px;
  background: var(--border);
  border-radius: 2px;
  margin-top: 12px;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent), var(--purple));
  border-radius: 2px;
  transition: width 0.5s ease;
}

/* Cards */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 24px;
  overflow: hidden;
}

.card-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
}

.card-header h2 {
  font-size: 1rem;
  font-weight: 600;
}

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

table {
  width: 100%;
  border-collapse: collapse;
}

th {
  text-align: left;
  padding: 12px 20px;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-bottom: 1px solid var(--border);
}

td {
  padding: 14px 20px;
  font-size: 0.9rem;
  border-bottom: 1px solid rgba(255,255,255,0.03);
}

tr:hover td { background: rgba(255,255,255,0.02); }

/* Status Badge */
.badge {
  display: inline-block;
  padding: 4px 10px;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 600;
}

.badge-active { background: rgba(34,197,94,0.12); color: var(--green); }
.badge-paid { background: rgba(34,197,94,0.12); color: var(--green); }
.badge-pending { background: rgba(245,158,11,0.12); color: var(--orange); }
.badge-overdue { background: rgba(239,68,68,0.12); color: var(--red); }
.badge-draft { background: rgba(255,255,255,0.06); color: var(--text-muted); }

/* Clients Grid */
.clients-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 16px;
}

.client-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  transition: border-color 0.15s;
  cursor: pointer;
}

.client-card:hover { border-color: var(--border-light); }

.client-card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 16px;
}

.client-name {
  font-size: 1.1rem;
  font-weight: 700;
}

.client-url {
  font-size: 0.8rem;
  color: var(--accent);
  text-decoration: none;
  display: block;
  margin-top: 2px;
}

.client-owner {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 16px;
}

.client-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.client-stat-label {
  font-size: 0.7rem;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.client-stat-value {
  font-size: 1rem;
  font-weight: 600;
  margin-top: 2px;
}

/* Activity List */
.activity-list { padding: 8px 0; }

.activity-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 20px;
  border-bottom: 1px solid rgba(255,255,255,0.03);
}

.activity-item:last-child { border-bottom: none; }

.activity-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}

.activity-dot.blue { background: var(--accent); }
.activity-dot.green { background: var(--green); }
.activity-dot.orange { background: var(--orange); }
.activity-dot.purple { background: var(--purple); }

.activity-text { font-size: 0.9rem; flex: 1; }
.activity-time { font-size: 0.8rem; color: var(--text-dim); }

/* Buttons */
.btn {
  padding: 9px 18px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--bg-card);
  color: var(--text);
  font-family: var(--font);
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.15s;
}

.btn:hover { border-color: var(--border-light); }

.btn-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: white;
}

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

.btn-sm { padding: 5px 12px; font-size: 0.8rem; }

.btn-ghost {
  background: transparent;
  border-color: transparent;
  color: var(--text-muted);
}

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

/* Modal */
.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.6);
  backdrop-filter: blur(4px);
  z-index: 100;
  justify-content: center;
  align-items: center;
}

.modal-overlay.open { display: flex; }

.modal {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  width: 480px;
  max-width: 90vw;
  max-height: 85vh;
  overflow-y: auto;
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 24px;
  border-bottom: 1px solid var(--border);
}

.modal-header h2 { font-size: 1.1rem; font-weight: 600; }

.modal-close {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 1.5rem;
  cursor: pointer;
  line-height: 1;
}

.modal-body { padding: 24px; }

/* Form */
.form-group { margin-bottom: 16px; }

.form-group label {
  display: block;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-muted);
  margin-bottom: 6px;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 10px 12px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-family: var(--font);
  font-size: 0.9rem;
  outline: none;
  transition: border-color 0.15s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--accent);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.form-actions {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  margin-top: 24px;
}

/* Responsive */
@media (max-width: 1024px) {
  .kpi-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .sidebar { display: none; }
  .main { margin-left: 0; padding: 20px; }
  .kpi-grid { grid-template-columns: 1fr; }
  .view-header { flex-direction: column; gap: 12px; }
}