/* ============================================
   Smart Invoice System — Admin Dashboard CSS
   Premium dark-mode with sidebar layout
   ============================================ */

:root {
  --bg-primary: #0a0e1a;
  --bg-secondary: #111827;
  --bg-card: rgba(17, 24, 39, 0.7);
  --bg-card-hover: rgba(30, 41, 59, 0.8);
  --bg-glass: rgba(255, 255, 255, 0.04);
  --bg-glass-hover: rgba(255, 255, 255, 0.08);
  --bg-sidebar: #0d1117;
  --bg-input: rgba(255, 255, 255, 0.06);
  --bg-input-focus: rgba(255, 255, 255, 0.1);

  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;

  --accent-blue: #3b82f6;
  --accent-blue-glow: rgba(59, 130, 246, 0.25);
  --accent-emerald: #10b981;
  --accent-emerald-glow: rgba(16, 185, 129, 0.25);
  --accent-amber: #f59e0b;
  --accent-amber-glow: rgba(245, 158, 11, 0.25);
  --accent-rose: #f43f5e;
  --accent-rose-glow: rgba(244, 63, 94, 0.25);
  --accent-purple: #8b5cf6;
  --accent-purple-glow: rgba(139, 92, 246, 0.25);
  --accent-cyan: #06b6d4;

  --border-subtle: rgba(255, 255, 255, 0.06);
  --border-card: rgba(255, 255, 255, 0.08);
  --border-input: rgba(255, 255, 255, 0.12);
  --border-focus: var(--accent-blue);

  --sidebar-width: 240px;
  --topbar-height: 56px;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.3);
  --shadow-modal: 0 20px 60px rgba(0, 0, 0, 0.5);
  --transition: 200ms ease;
  --transition-smooth: 300ms cubic-bezier(0.4, 0, 0.2, 1);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 15px; }
body {
  font-family: 'Inter', -apple-system, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  display: flex;
  overflow-x: hidden;
}
body::before {
  content: '';
  position: fixed; inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 20% 10%, rgba(59,130,246,0.06) 0%, transparent 60%),
    radial-gradient(ellipse 60% 50% at 80% 80%, rgba(139,92,246,0.04) 0%, transparent 60%);
  pointer-events: none; z-index: 0;
}

/* ============================================
   SIDEBAR
   ============================================ */
.sidebar {
  position: fixed; left: 0; top: 0; bottom: 0;
  width: var(--sidebar-width);
  background: var(--bg-sidebar);
  border-right: 1px solid var(--border-subtle);
  display: flex; flex-direction: column;
  z-index: 200;
  transition: transform var(--transition-smooth);
}

.sidebar-brand {
  display: flex; align-items: center; gap: 12px;
  padding: 20px 18px;
  border-bottom: 1px solid var(--border-subtle);
}
.brand-icon {
  font-size: 22px; width: 40px; height: 40px;
  display: flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
  border-radius: var(--radius-md);
  flex-shrink: 0;
}
.brand-title { font-size: 0.95rem; font-weight: 700; color: var(--text-primary); display: block; }
.brand-sub { font-size: 0.65rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.06em; }

.sidebar-nav {
  flex: 1; overflow-y: auto; padding: 12px 10px;
  display: flex; flex-direction: column; gap: 2px;
}
.nav-item {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 12px; border-radius: var(--radius-sm);
  color: var(--text-secondary); text-decoration: none;
  font-size: 0.85rem; font-weight: 500;
  transition: all var(--transition);
}
.nav-item:hover { background: var(--bg-glass-hover); color: var(--text-primary); }
.nav-item.active { background: var(--accent-blue-glow); color: var(--accent-blue); font-weight: 600; }
.nav-icon { font-size: 1.1rem; width: 22px; text-align: center; flex-shrink: 0; }
.nav-divider { height: 1px; background: var(--border-subtle); margin: 10px 4px; }
.nav-section {
  font-size: 0.65rem; color: var(--text-muted); text-transform: uppercase;
  letter-spacing: 0.08em; padding: 6px 12px; font-weight: 600;
}

.sidebar-footer {
  padding: 14px 18px;
  border-top: 1px solid var(--border-subtle);
}
.system-status { display: flex; align-items: center; gap: 8px; font-size: 0.75rem; color: var(--text-muted); }
.status-dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--accent-amber);
  animation: pulse 2s ease-in-out infinite;
}
.status-dot.online { background: var(--accent-emerald); }
.status-dot.offline { background: var(--accent-rose); animation: none; }
@keyframes pulse { 0%,100% { opacity:1; } 50% { opacity:0.4; } }

/* ============================================
   MAIN WRAPPER
   ============================================ */
.main-wrapper {
  flex: 1;
  margin-left: var(--sidebar-width);
  display: flex; flex-direction: column;
  min-height: 100vh;
  position: relative; z-index: 1;
}

.topbar {
  position: sticky; top: 0; z-index: 100;
  display: flex; align-items: center; gap: 16px;
  padding: 0 28px; height: var(--topbar-height);
  background: rgba(10,14,26,0.85);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-subtle);
}
.sidebar-toggle {
  display: none; background: none; border: none; color: var(--text-secondary);
  font-size: 1.3rem; cursor: pointer; padding: 4px;
}
.page-title { font-size: 1.05rem; font-weight: 600; flex: 1; }
.topbar-actions { display: flex; align-items: center; gap: 12px; }
.topbar-status { font-size: 0.75rem; color: var(--text-muted); }

.page-content { flex: 1; padding: 28px; max-width: 1400px; width: 100%; }

/* ============================================
   BUTTONS
   ============================================ */
.btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 8px 16px; border-radius: var(--radius-sm);
  font-size: 0.82rem; font-weight: 500; font-family: inherit;
  border: 1px solid transparent; cursor: pointer;
  transition: all var(--transition); text-decoration: none;
}
.btn-sm { padding: 5px 12px; font-size: 0.75rem; }
.btn-primary { background: var(--accent-blue); color: #fff; border-color: var(--accent-blue); }
.btn-primary:hover { background: #2563eb; box-shadow: 0 0 20px var(--accent-blue-glow); }
.btn-success { background: var(--accent-emerald); color: #fff; }
.btn-success:hover { background: #059669; }
.btn-danger { background: var(--accent-rose); color: #fff; }
.btn-danger:hover { background: #e11d48; }
.btn-ghost { background: transparent; color: var(--text-secondary); border-color: var(--border-input); }
.btn-ghost:hover { color: var(--text-primary); background: var(--bg-glass-hover); }
.btn-warning { background: var(--accent-amber); color: #000; }

/* ============================================
   CARDS & PANELS
   ============================================ */
.panel {
  background: var(--bg-card); border-radius: var(--radius-lg);
  border: 1px solid var(--border-card); margin-bottom: 20px;
  backdrop-filter: blur(8px); overflow: hidden;
}
.panel-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px 20px; border-bottom: 1px solid var(--border-subtle);
}
.panel-title { font-size: 0.9rem; font-weight: 600; }
.panel-body { padding: 20px; }
.panel-body.no-pad { padding: 0; }

/* Stats grid */
.stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 16px; margin-bottom: 24px; }
.stat-card {
  position: relative; display: flex; align-items: center; gap: 14px;
  padding: 20px; background: var(--bg-card); border-radius: var(--radius-lg);
  border: 1px solid var(--border-card); transition: all var(--transition-smooth);
  overflow: hidden;
}
.stat-card::before { content:''; position:absolute; top:0; left:0; right:0; height:3px; border-radius: var(--radius-lg) var(--radius-lg) 0 0; }
.stat-total::before { background: linear-gradient(90deg, var(--accent-blue), var(--accent-purple)); }
.stat-progress::before { background: linear-gradient(90deg, var(--accent-amber), #fbbf24); }
.stat-completed::before { background: linear-gradient(90deg, var(--accent-emerald), #34d399); }
.stat-failed::before { background: linear-gradient(90deg, var(--accent-rose), #fb7185); }
.stat-revenue::before { background: linear-gradient(90deg, var(--accent-purple), var(--accent-blue)); }
.stat-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-card); }
.stat-icon { font-size: 1.8rem; flex-shrink: 0; }
.stat-value { font-size: 1.5rem; font-weight: 700; letter-spacing: -0.03em; line-height: 1; display: block; }
.stat-label { font-size: 0.7rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.05em; font-weight: 500; }

/* ============================================
   TABLES
   ============================================ */
.table-container { overflow-x: auto; }
.data-table { width: 100%; border-collapse: collapse; }
.data-table thead th {
  padding: 12px 16px; text-align: left;
  font-size: 0.68rem; font-weight: 600;
  text-transform: uppercase; letter-spacing: 0.07em;
  color: var(--text-muted); background: rgba(255,255,255,0.02);
  border-bottom: 1px solid var(--border-subtle);
}
.data-table tbody tr { border-bottom: 1px solid var(--border-subtle); transition: background var(--transition); }
.data-table tbody tr:hover { background: var(--bg-glass-hover); }
.data-table tbody td { padding: 12px 16px; font-size: 0.82rem; color: var(--text-secondary); }
.data-table .cell-name { color: var(--text-primary); font-weight: 500; }
.data-table .cell-url { font-size: 0.75rem; color: var(--text-muted); max-width: 200px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.data-table .cell-actions { display: flex; gap: 6px; }

.empty-state { text-align: center; padding: 48px 20px; color: var(--text-muted); }
.empty-icon { font-size: 2.5rem; opacity: 0.4; display: block; margin-bottom: 12px; }

/* Status badges */
.badge {
  display: inline-flex; align-items: center; gap: 4px;
  padding: 3px 10px; border-radius: 50px;
  font-size: 0.7rem; font-weight: 500;
}
.badge-active { background: rgba(16,185,129,0.15); color: #34d399; }
.badge-inactive { background: rgba(100,116,139,0.2); color: #94a3b8; }
.badge-error { background: rgba(244,63,94,0.15); color: #fb7185; }
.badge-running { background: rgba(59,130,246,0.15); color: #60a5fa; }
.badge-paused { background: rgba(245,158,11,0.15); color: #fbbf24; }
.badge-idle { background: rgba(100,116,139,0.15); color: #94a3b8; }

/* ============================================
   FORMS
   ============================================ */
.form-group { margin-bottom: 16px; }
.form-label {
  display: block; font-size: 0.75rem; font-weight: 600; color: var(--text-secondary);
  margin-bottom: 6px; text-transform: uppercase; letter-spacing: 0.04em;
}
.form-input, .form-select, .form-textarea {
  width: 100%; padding: 9px 14px;
  background: var(--bg-input); border: 1px solid var(--border-input);
  border-radius: var(--radius-sm); color: var(--text-primary);
  font-family: inherit; font-size: 0.85rem;
  transition: all var(--transition);
}
.form-input:focus, .form-select:focus, .form-textarea:focus {
  outline: none; border-color: var(--border-focus);
  background: var(--bg-input-focus);
  box-shadow: 0 0 0 3px var(--accent-blue-glow);
}
.form-input::placeholder { color: var(--text-muted); }
.form-textarea { min-height: 80px; resize: vertical; }
.form-select { appearance: none; cursor: pointer; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-hint { font-size: 0.7rem; color: var(--text-muted); margin-top: 4px; }
.form-divider { border: none; border-top: 1px solid var(--border-subtle); margin: 20px 0; }

/* ============================================
   MODAL
   ============================================ */
.modal-overlay {
  position: fixed; inset: 0; background: rgba(0,0,0,0.6);
  backdrop-filter: blur(4px); display: none; align-items: center;
  justify-content: center; z-index: 1000;
}
.modal-overlay.active { display: flex; }
.modal {
  background: var(--bg-secondary); border: 1px solid var(--border-card);
  border-radius: var(--radius-lg); width: 90%; max-width: 560px;
  max-height: 85vh; display: flex; flex-direction: column;
  box-shadow: var(--shadow-modal);
  animation: modalSlide 0.25s ease;
}
@keyframes modalSlide { from { opacity:0; transform:translateY(20px); } to { opacity:1; transform:translateY(0); } }
.modal-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 18px 22px; border-bottom: 1px solid var(--border-subtle);
}
.modal-title { font-size: 1rem; font-weight: 600; }
.modal-close {
  background: none; border: none; color: var(--text-muted);
  font-size: 1.5rem; cursor: pointer; line-height: 1;
  transition: color var(--transition);
}
.modal-close:hover { color: var(--text-primary); }
.modal-body { padding: 22px; overflow-y: auto; flex: 1; }
.modal-footer {
  display: flex; justify-content: flex-end; gap: 10px;
  padding: 14px 22px; border-top: 1px solid var(--border-subtle);
}

/* ============================================
   TOAST
   ============================================ */
.toast-container { position: fixed; bottom: 20px; right: 20px; z-index: 2000; display: flex; flex-direction: column; gap: 8px; }
.toast {
  padding: 12px 20px; border-radius: var(--radius-md);
  font-size: 0.82rem; font-weight: 500;
  box-shadow: var(--shadow-card);
  animation: toastIn 0.3s ease;
  display: flex; align-items: center; gap: 8px;
  max-width: 360px;
}
.toast-success { background: #065f46; color: #a7f3d0; border: 1px solid rgba(16,185,129,0.3); }
.toast-error { background: #7f1d1d; color: #fecaca; border: 1px solid rgba(244,63,94,0.3); }
.toast-info { background: #1e3a5f; color: #bfdbfe; border: 1px solid rgba(59,130,246,0.3); }
@keyframes toastIn { from { opacity:0; transform:translateX(40px); } to { opacity:1; transform:translateX(0); } }

/* ============================================
   AGENT CARDS
   ============================================ */
.agents-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 16px; }
.agent-card {
  display: flex; flex-direction: column; gap: 12px;
  padding: 20px; background: var(--bg-glass);
  border-radius: var(--radius-md); border: 1px solid var(--border-subtle);
  transition: all var(--transition-smooth);
}
.agent-card:hover { background: var(--bg-glass-hover); border-color: rgba(255,255,255,0.12); }
.agent-card-header { display: flex; align-items: center; gap: 12px; }
.agent-card-icon { font-size: 1.8rem; }
.agent-card-info { flex: 1; }
.agent-card-name { font-weight: 600; font-size: 0.9rem; }
.agent-card-desc { font-size: 0.72rem; color: var(--text-muted); }
.agent-card-actions { display: flex; gap: 8px; margin-top: 4px; }

/* Config section cards */
.config-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.config-section { padding: 20px; }
.config-section h4 { font-size: 0.85rem; margin-bottom: 16px; display: flex; align-items: center; gap: 8px; }

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 900px) {
  .sidebar { transform: translateX(-100%); }
  .sidebar.open { transform: translateX(0); }
  .main-wrapper { margin-left: 0; }
  .sidebar-toggle { display: block; }
  .config-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
}

/* ============================================
   ANIMATIONS
   ============================================ */
@keyframes fadeIn { from { opacity:0; transform:translateY(6px); } to { opacity:1; transform:translateY(0); } }
.panel, .stat-card, .agent-card { animation: fadeIn 0.4s ease backwards; }