:root {
  --bg: #0f1117;
  --bg2: #151821;
  --card: #1a1d27;
  --card-hover: #1f2233;
  --border: #2a2d3a;
  --accent: #6c5ce7;
  --accent-hover: #7d6ff0;
  --green: #00b894;
  --green-bg: #00b89415;
  --red: #e17055;
  --red-bg: #e1705515;
  --yellow: #fdcb6e;
  --yellow-bg: #fdcb6e15;
  --blue: #0984e3;
  --blue-bg: #0984e315;
  --text: #e0e0e0;
  --text2: #b0b0b0;
  --muted: #666;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 2px 12px rgba(0,0,0,.3);
  --sidebar-w: 240px;
  --transition: .2s ease;
}

/* ── Light Theme ── */
[data-theme="light"] {
  --bg: #f0f2f5;
  --bg2: #ffffff;
  --card: #ffffff;
  --card-hover: #f5f5f8;
  --border: #e0e0e0;
  --text: #1a1a2e;
  --text2: #555;
  --muted: #888;
  --green-bg: #00b89418;
  --red-bg: #e1705518;
  --yellow-bg: #fdcb6e18;
  --blue-bg: #0984e318;
}

[data-theme="light"] .page-header h1,
[data-theme="light"] .stat-card .stat-value,
[data-theme="light"] .sidebar-brand { color: #1a1a2e; }

[data-theme="light"] .sidebar-nav li a:hover,
[data-theme="light"] .sidebar-nav li a.active { color: #1a1a2e; }

[data-theme="light"] .login-card h1 { color: #1a1a2e; }

[data-theme="light"] .badge-muted { background: #e0e0e0; color: #666; }

[data-theme="light"] .btn-secondary { background: #e0e0e0; color: #333; }
[data-theme="light"] .btn-secondary:hover { background: #d0d0d0; color: #111; }

/* ── Theme Toggle ── */
.theme-toggle {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 20px;
  cursor: pointer;
  color: var(--muted);
  font-size: .85rem;
  transition: color var(--transition);
  border: none;
  background: none;
  width: 100%;
}
.theme-toggle:hover { color: var(--accent); }

/* ── Logo ── */
.sidebar-logo-img {
  height: 35px;
  object-fit: contain;
}

.login-logo {
  margin-bottom: 20px;
}
.login-logo img {
  height: 50px;
  object-fit: contain;
}

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

body {
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
}

a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-hover); }

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

/* ── Sidebar ── */
.sidebar {
  width: var(--sidebar-w);
  background: var(--bg2);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  z-index: 100;
  transition: transform var(--transition);
}

.sidebar-brand {
  padding: 20px;
  font-size: 1.3rem;
  font-weight: 700;
  color: #fff;
  border-bottom: 1px solid var(--border);
  letter-spacing: .5px;
  text-align: center;
  min-height: 80px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.sidebar-brand span { color: var(--accent); }

.sidebar-nav {
  flex: 1;
  padding: 12px 0;
  list-style: none;
}

.sidebar-nav li a {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 20px;
  color: var(--text2);
  font-size: .95rem;
  transition: all var(--transition);
  border-left: 3px solid transparent;
}

.sidebar-nav li a:hover {
  background: var(--card);
  color: #fff;
}

.sidebar-nav li a.active {
  color: #fff;
  background: var(--card);
  border-left-color: var(--accent);
}

.sidebar-nav li a .nav-icon {
  font-size: 1.1rem;
  width: 24px;
  text-align: center;
}

.sidebar-footer {
  padding: 16px 20px;
  border-top: 1px solid var(--border);
}

.sidebar-footer a {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--muted);
  font-size: .85rem;
}

.sidebar-footer a:hover { color: var(--red); }

/* ── Main ── */
.main-content {
  flex: 1;
  margin-left: var(--sidebar-w);
  padding: 28px 32px;
  min-height: 100vh;
}

.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
  flex-wrap: wrap;
  gap: 12px;
}

.page-header h1 {
  font-size: 1.5rem;
  font-weight: 700;
  color: #fff;
}

/* ── Mobile Toggle ── */
.menu-toggle {
  display: none;
  position: fixed;
  top: 16px;
  left: 16px;
  z-index: 200;
  background: var(--card);
  border: 1px solid var(--border);
  color: var(--text);
  font-size: 1.3rem;
  width: 44px;
  height: 44px;
  border-radius: 10px;
  cursor: pointer;
  align-items: center;
  justify-content: center;
}

.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.5);
  z-index: 90;
}

/* ── Cards ── */
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 20px;
}

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

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

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

.stat-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  transition: transform var(--transition);
}

.stat-card:hover { transform: translateY(-2px); }

.stat-card .stat-icon {
  width: 42px;
  height: 42px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  margin-bottom: 12px;
}

.stat-card .stat-label {
  font-size: .8rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: .5px;
}

.stat-card .stat-value {
  font-size: 1.5rem;
  font-weight: 700;
  margin-top: 4px;
  color: #fff;
}

/* ── Forms ── */
.form-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-group.full { grid-column: 1 / -1; }

.form-group label {
  font-size: .82rem;
  color: var(--text2);
  font-weight: 500;
}

.form-group input,
.form-group select,
.form-group textarea {
  background: var(--bg);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  font-size: .95rem;
  font-family: inherit;
  outline: none;
  transition: border-color var(--transition);
}

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

.form-group textarea { resize: vertical; min-height: 80px; }

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  border: none;
  border-radius: var(--radius-sm);
  font-size: .9rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  font-family: inherit;
  text-decoration: none;
}

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

.btn-success { background: var(--green); color: #fff; }
.btn-success:hover { opacity: .85; color: #fff; }

.btn-danger { background: var(--red); color: #fff; }
.btn-danger:hover { opacity: .85; color: #fff; }

.btn-secondary { background: var(--border); color: var(--text); }
.btn-secondary:hover { background: #3a3d4a; color: #fff; }

.btn-sm { padding: 6px 12px; font-size: .82rem; }

.btn-icon {
  width: 34px;
  height: 34px;
  padding: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  background: none;
  border: 1px solid var(--border);
  color: var(--text2);
  cursor: pointer;
  transition: all var(--transition);
}

.btn-icon:hover { border-color: var(--accent); color: var(--accent); }
.btn-icon.danger:hover { border-color: var(--red); color: var(--red); }

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

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

table th {
  text-align: left;
  padding: 12px 16px;
  font-size: .8rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: .5px;
  border-bottom: 1px solid var(--border);
}

table td {
  padding: 12px 16px;
  font-size: .9rem;
  border-bottom: 1px solid var(--border);
}

table tr:hover td { background: var(--card-hover); }

table .actions {
  display: flex;
  gap: 6px;
  justify-content: flex-end;
}

/* ── Badges ── */
.badge {
  display: inline-block;
  padding: 4px 10px;
  border-radius: 20px;
  font-size: .75rem;
  font-weight: 600;
}

.badge-green { background: var(--green-bg); color: var(--green); }
.badge-red { background: var(--red-bg); color: var(--red); }
.badge-yellow { background: var(--yellow-bg); color: var(--yellow); }
.badge-blue { background: var(--blue-bg); color: var(--blue); }
.badge-muted { background: #2a2d3a; color: var(--muted); }

/* ── Alerts ── */
.alert {
  padding: 14px 18px;
  border-radius: var(--radius-sm);
  margin-bottom: 16px;
  font-size: .9rem;
}

.alert-success { background: var(--green-bg); color: var(--green); border: 1px solid #00b89430; }
.alert-error { background: var(--red-bg); color: var(--red); border: 1px solid #e1705530; }
.alert-info { background: var(--blue-bg); color: var(--blue); border: 1px solid #0984e330; }

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

.login-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 40px;
  width: 100%;
  max-width: 400px;
  text-align: center;
}

.login-card h1 {
  font-size: 1.5rem;
  margin-bottom: 8px;
  color: #fff;
}

.login-card p { color: var(--muted); margin-bottom: 24px; font-size: .9rem; }

.login-card .form-group {
  text-align: left;
  margin-bottom: 16px;
}

.login-card .btn { width: 100%; justify-content: center; margin-top: 8px; }

/* ── Empty State ── */
.empty-state {
  text-align: center;
  padding: 48px 20px;
  color: var(--muted);
}

.empty-state .empty-icon { font-size: 2.5rem; margin-bottom: 12px; }
.empty-state p { font-size: .95rem; }

/* ── Item rows (for invoice/offer positions) ── */
.item-row {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr auto;
  gap: 10px;
  align-items: end;
  margin-bottom: 10px;
}

.item-row input, .item-row select {
  background: var(--bg);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 8px 10px;
  border-radius: var(--radius-sm);
  font-size: .9rem;
  outline: none;
}

.item-row input:focus, .item-row select:focus { border-color: var(--accent); }

/* ── Responsive ── */
@media (max-width: 768px) {
  .sidebar { transform: translateX(-100%); }
  .sidebar.open { transform: translateX(0); }
  .sidebar-overlay.open { display: block; }
  .menu-toggle { display: flex; }

  .main-content {
    margin-left: 0;
    padding: 70px 16px 16px;
  }

  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 10px; }
  .form-grid { grid-template-columns: 1fr; }
  .item-row { grid-template-columns: 1fr; }

  .page-header { flex-direction: column; align-items: flex-start; }
  .page-header h1 { font-size: 1.2rem; }
}

@media (max-width: 480px) {
  .stats-grid { grid-template-columns: 1fr; }
}