@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Sora:wght@600;700;800&display=swap');

/* =====================
   DARK THEME (default)
   ===================== */
:root,
[data-theme="dark"] {
  --bg-primary:    #0a0f1e;
  --bg-secondary:  #0d1424;
  --bg-card:       #111827;
  --bg-card-hover: #161f35;
  --bg-sidebar:    #0d1424;
  --bg-input:      #1a2338;
  --border:        #1e2d45;
  --border-light:  #243050;

  --accent:        #6366f1;
  --accent-hover:  #4f52d0;
  --accent-glow:   rgba(99, 102, 241, 0.15);

  --success:       #10b981;
  --warning:       #f59e0b;
  --danger:        #ef4444;
  --info:          #3b82f6;

  --text-primary:  #f9fafb;
  --text-secondary:#9ca3af;
  --text-muted:    #6b7280;

  --sidebar-w:     260px;
  --header-h:      64px;
  --radius:        12px;
  --radius-sm:     8px;
  --shadow:        0 4px 24px rgba(0,0,0,0.4);
  --shadow-glow:   0 0 30px rgba(99,102,241,0.15);
  --transition:    all 0.2s ease;
}

/* =====================
   LIGHT THEME
   ===================== */
[data-theme="light"] {
  --bg-primary:    #f4f6fb;
  --bg-secondary:  #eaeff7;
  --bg-card:       #ffffff;
  --bg-card-hover: #f8f9ff;
  --bg-sidebar:    #ffffff;
  --bg-input:      #f1f4fb;
  --border:        #dde3f0;
  --border-light:  #c8d2e8;

  --accent:        #5557e8;
  --accent-hover:  #4345c4;
  --accent-glow:   rgba(85, 87, 232, 0.1);

  --success:       #059669;
  --warning:       #d97706;
  --danger:        #dc2626;
  --info:          #2563eb;

  --text-primary:  #111827;
  --text-secondary:#374151;
  --text-muted:    #6b7280;

  --shadow:        0 4px 24px rgba(0,0,0,0.08);
  --shadow-glow:   0 0 30px rgba(85,87,232,0.1);
}

/* Light theme specific overrides */
[data-theme="light"] .sidebar {
  box-shadow: 2px 0 12px rgba(0,0,0,0.06);
  border-right: 1px solid var(--border);
}
[data-theme="light"] .header {
  box-shadow: 0 1px 8px rgba(0,0,0,0.06);
  background: rgba(255,255,255,0.95);
  border-bottom: 1px solid var(--border);
}
[data-theme="light"] .nav-item:hover,
[data-theme="light"] .nav-item.active {
  background: rgba(85,87,232,0.08);
}
[data-theme="light"] .stat-card {
  background: #ffffff;
  border-color: var(--border);
}
[data-theme="light"] .table-wrapper table thead tr {
  background: #eef0fb;
}
[data-theme="light"] .table-wrapper table tbody tr:hover {
  background: #f5f7ff;
}
[data-theme="light"] .badge-draft  { background: rgba(107,114,128,0.12); color: #374151; }
[data-theme="light"] .badge-info   { background: rgba(37,99,235,0.1); color: #1d4ed8; }
[data-theme="light"] .badge-success { background: rgba(5,150,105,0.1); color: #047857; }
[data-theme="light"] .badge-warning { background: rgba(217,119,6,0.1); color: #b45309; }
[data-theme="light"] .badge-danger  { background: rgba(220,38,38,0.1); color: #b91c1c; }
[data-theme="light"] .card {
  box-shadow: 0 1px 4px rgba(0,0,0,0.06), 0 0 0 1px var(--border);
}
[data-theme="light"] ::-webkit-scrollbar-track { background: #eef0fb; }
[data-theme="light"] ::-webkit-scrollbar-thumb { background: #c8d2e8; }

/* Theme transition */
*, *::before, *::after {
  transition: background-color 0.25s ease, border-color 0.25s ease, color 0.15s ease;
}

/* =====================
   RESET & BASE
   ===================== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { font-size: 15px; scroll-behavior: smooth; }

body {
  font-family: 'Inter', sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  line-height: 1.6;
}

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

/* =====================
   SCROLLBAR
   ===================== */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--bg-secondary); }
::-webkit-scrollbar-thumb { background: var(--border-light); border-radius: 10px; }
::-webkit-scrollbar-thumb:hover { background: var(--accent); }

/* =====================
   LAYOUT
   ===================== */
.app-layout {
  display: grid;
  grid-template-columns: var(--sidebar-w) 1fr;
  grid-template-rows: var(--header-h) 1fr;
  min-height: 100vh;
  transition: grid-template-columns 0.3s ease;
}

.app-layout.sidebar-closed {
  grid-template-columns: 0px 1fr;
}

.app-layout.sidebar-closed .sidebar {
  transform: translateX(-100%);
  opacity: 0;
  pointer-events: none;
}

/* =====================
   SIDEBAR
   ===================== */
.sidebar {
  grid-row: 1 / -1;
  background: var(--bg-sidebar);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
  z-index: 100;
  transition: transform 0.3s ease, opacity 0.3s ease;
}

.sidebar-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 20px 20px 16px;
  border-bottom: 1px solid var(--border);
}

.sidebar-logo .logo-icon {
  width: 36px; height: 36px;
  background: linear-gradient(135deg, var(--accent), #8b5cf6);
  border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  font-size: 18px;
  box-shadow: 0 0 16px rgba(99,102,241,0.4);
}

.sidebar-logo .logo-text {
  font-family: 'Sora', sans-serif;
  font-size: 1.1rem;
  font-weight: 700;
  background: linear-gradient(135deg, #e0e7ff, var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.sidebar-logo .logo-text span {
  font-weight: 300;
  color: var(--text-secondary);
  -webkit-text-fill-color: var(--text-secondary);
}

.sidebar-org {
  padding: 12px 16px;
  margin: 10px 12px;
  background: var(--bg-card);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  font-size: 0.78rem;
  color: var(--text-muted);
}

.sidebar-org .org-name {
  font-weight: 600;
  color: var(--text-primary);
  font-size: 0.85rem;
  display: block;
}

.sidebar-nav { flex: 1; padding: 8px 12px; }

.nav-section-label {
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  padding: 12px 8px 6px;
  font-weight: 600;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 12px;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-size: 0.88rem;
  font-weight: 500;
  margin-bottom: 2px;
  transition: var(--transition);
  cursor: pointer;
  position: relative;
}

.nav-item:hover {
  background: var(--bg-card-hover);
  color: var(--text-primary);
}

.nav-item.active {
  background: var(--accent-glow);
  color: var(--accent);
  border: 1px solid rgba(99,102,241,0.2);
}

.nav-item.active::before {
  content: '';
  position: absolute;
  left: 0; top: 50%;
  transform: translateY(-50%);
  width: 3px; height: 60%;
  background: var(--accent);
  border-radius: 0 4px 4px 0;
}

.nav-item .nav-icon { font-size: 1rem; width: 20px; text-align: center; }
.nav-item .nav-badge {
  margin-left: auto;
  background: var(--danger);
  color: white;
  font-size: 0.7rem;
  padding: 1px 6px;
  border-radius: 10px;
  font-weight: 600;
}

.sidebar-footer {
  padding: 12px;
  border-top: 1px solid var(--border);
}

/* =====================
   HEADER
   ===================== */
.header {
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  padding: 0 24px;
  gap: 16px;
  position: sticky;
  top: 0;
  z-index: 90;
}

.header-title {
  font-family: 'Sora', sans-serif;
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
}

.header-breadcrumb {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.header-right { margin-left: auto; display: flex; align-items: center; gap: 12px; }

.header-avatar {
  width: 34px; height: 34px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), #8b5cf6);
  display: flex; align-items: center; justify-content: center;
  font-size: 0.85rem;
  font-weight: 700;
  cursor: pointer;
  position: relative;
}

.header-avatar .dropdown-menu {
  position: absolute;
  right: 0; top: calc(100% + 8px);
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  min-width: 180px;
  display: none;
  box-shadow: var(--shadow);
  z-index: 200;
}

.header-avatar:hover .dropdown-menu,
.header-avatar:focus-within .dropdown-menu { display: block; }

.dropdown-menu a {
  display: flex; align-items: center; gap: 8px;
  padding: 9px 16px;
  color: var(--text-secondary);
  font-size: 0.85rem;
  transition: var(--transition);
}

.dropdown-menu a:hover { background: var(--bg-card-hover); color: var(--text-primary); }
.dropdown-menu .dropdown-divider { border-top: 1px solid var(--border); margin: 4px 0; }

/* =====================
   MAIN CONTENT
   ===================== */
.main-content {
  padding: 28px;
  overflow-x: hidden;
  animation: pageFadeIn 0.4s ease-out forwards;
}

@keyframes pageFadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 28px;
}

.page-title {
  font-family: 'Sora', sans-serif;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
}

.page-subtitle {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 2px;
}

/* =====================
   CARDS
   ===================== */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: var(--transition);
}

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

.card-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.card-title {
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--text-primary);
}

.card-body { padding: 20px; }

/* =====================
   KPI STATS
   ===================== */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
  margin-bottom: 28px;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  position: relative;
  overflow: hidden;
  transition: var(--transition);
}

.stat-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: var(--accent-color, var(--accent));
}

.stat-card:hover {
  border-color: var(--border-light);
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}

.stat-icon {
  width: 44px; height: 44px;
  border-radius: var(--radius-sm);
  background: var(--accent-bg, var(--accent-glow));
  display: flex; align-items: center; justify-content: center;
  font-size: 1.3rem;
  margin-bottom: 14px;
}

.stat-value {
  font-family: 'Sora', sans-serif;
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1;
  margin-bottom: 4px;
}

.stat-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-weight: 500;
}

.stat-change {
  font-size: 0.75rem;
  margin-top: 8px;
  display: flex;
  align-items: center;
  gap: 4px;
}

.stat-change.up { color: var(--success); }
.stat-change.down { color: var(--danger); }

/* =====================
   TABLES
   ===================== */
.table-wrapper {
  overflow-x: auto;
  border-radius: var(--radius);
  border: 1px solid var(--border);
}

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

thead tr {
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
}

thead th {
  padding: 11px 16px;
  text-align: left;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--text-muted);
  font-weight: 600;
  white-space: nowrap;
}

tbody tr {
  border-bottom: 1px solid var(--border);
  transition: var(--transition);
}

tbody tr:last-child { border-bottom: none; }
tbody tr:hover { background: var(--bg-card-hover); }

tbody td {
  padding: 12px 16px;
  color: var(--text-secondary);
  vertical-align: middle;
}

tbody td.fw { color: var(--text-primary); font-weight: 500; }

.table-actions { display: flex; gap: 6px; align-items: center; }

/* =====================
   BADGES / STATUS
   ===================== */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 3px 10px;
  border-radius: 20px;
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: capitalize;
}

.badge-draft    { background: rgba(107,114,128,0.2); color: #9ca3af; }
.badge-sent     { background: rgba(59,130,246,0.2);  color: #60a5fa; }
.badge-partial  { background: rgba(245,158,11,0.2);  color: #fbbf24; }
.badge-paid     { background: rgba(16,185,129,0.2);  color: #34d399; }
.badge-cancelled{ background: rgba(239,68,68,0.15);  color: #f87171; }
.badge-overdue  { background: rgba(239,68,68,0.2);   color: #ef4444; }
.badge-success  { background: rgba(16,185,129,0.2);  color: #34d399; }
.badge-warning  { background: rgba(245,158,11,0.2);  color: #fbbf24; }
.badge-info     { background: rgba(59,130,246,0.2);  color: #60a5fa; }

/* =====================
   BUTTONS
   ===================== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 9px 18px;
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
  white-space: nowrap;
  font-family: 'Inter', sans-serif;
}

.btn-primary {
  background: var(--accent);
  color: white;
  box-shadow: 0 0 20px rgba(99,102,241,0.3);
}

.btn-primary:hover {
  background: var(--accent-hover);
  transform: translateY(-1px);
  box-shadow: 0 0 30px rgba(99,102,241,0.5);
  color: white;
}

.btn-secondary {
  background: var(--bg-input);
  color: var(--text-secondary);
  border: 1px solid var(--border);
}

.btn-secondary:hover {
  background: var(--bg-card-hover);
  color: var(--text-primary);
  border-color: var(--border-light);
}

.btn-success { background: var(--success); color: white; }
.btn-success:hover { background: #0ca876; color: white; }
.btn-danger  { background: var(--danger);  color: white; }
.btn-danger:hover  { background: #dc2626;  color: white; }
.btn-warning { background: var(--warning); color: #1f2937; }

.btn-sm { padding: 5px 12px; font-size: 0.8rem; }
.btn-lg { padding: 12px 24px; font-size: 0.95rem; }

.btn-outline {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-secondary);
}

.btn-outline:hover { border-color: var(--accent); color: var(--accent); }
.btn-icon { padding: 7px; width: 34px; height: 34px; justify-content: center; }

.btn-loading {
  position: relative;
  color: transparent !important;
  pointer-events: none;
}
.btn-loading::after {
  content: '';
  position: absolute;
  width: 16px;
  height: 16px;
  top: 50%;
  left: 50%;
  margin-top: -8px;
  margin-left: -8px;
  border: 2px solid rgba(255,255,255,0.3);
  border-top-color: #fff;
  border-radius: 50%;
  animation: button-spin 0.6s linear infinite;
}
@keyframes button-spin {
  to { transform: rotate(360deg); }
}

/* =====================
   FORMS
   ===================== */
.form-group { margin-bottom: 18px; }

.form-label {
  display: block;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 6px;
}

.form-label .required { color: var(--danger); margin-left: 3px; }

.form-control {
  width: 100%;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 9px 12px;
  color: var(--text-primary);
  font-size: 0.875rem;
  font-family: 'Inter', sans-serif;
  transition: var(--transition);
  outline: none;
}

.form-control:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

.form-control::placeholder { color: var(--text-muted); }

select.form-control { cursor: pointer; }

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

.form-row {
  display: grid;
  gap: 16px;
}

.form-row.col-2 { grid-template-columns: 1fr 1fr; }
.form-row.col-3 { grid-template-columns: 1fr 1fr 1fr; }
.form-row.col-4 { grid-template-columns: 1fr 1fr 1fr 1fr; }

.form-help { font-size: 0.78rem; color: var(--text-muted); margin-top: 4px; }
.form-error { font-size: 0.78rem; color: var(--danger); margin-top: 4px; }

/* =====================
   ALERTS / FLASH
   ===================== */
.flash-container {
  position: fixed;
  bottom: 30px; right: 30px; top: auto;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 12px;
  max-width: 400px;
}

.alert {
  padding: 16px 20px;
  border-radius: 12px;
  font-size: 0.9rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 12px;
  animation: slideInUp 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  border-left: 4px solid;
  backdrop-filter: blur(16px);
  box-shadow: 0 10px 40px rgba(0,0,0,0.2);
}

.alert-success { background: rgba(16,185,129,0.15); border-color: var(--success); color: #6ee7b7; }
.alert-danger   { background: rgba(239,68,68,0.15);  border-color: var(--danger);  color: #fca5a5; }
.alert-warning  { background: rgba(245,158,11,0.15); border-color: var(--warning); color: #fcd34d; }
.alert-info     { background: rgba(59,130,246,0.15); border-color: var(--info);    color: #93c5fd; }

.alert-close {
  margin-left: auto;
  background: none;
  border: none;
  cursor: pointer;
  color: inherit;
  opacity: 0.7;
  font-size: 1rem;
}

@keyframes slideInUp {
  from { transform: translateY(100%); opacity: 0; }
  to   { transform: translateY(0);    opacity: 1; }
}

/* =====================
   SEARCH BAR
   ===================== */
.search-bar {
  position: relative;
  display: flex;
  align-items: center;
}

.search-bar input {
  padding-left: 36px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 8px 12px 8px 36px;
  color: var(--text-primary);
  font-size: 0.875rem;
  outline: none;
  transition: var(--transition);
  min-width: 220px;
}

.search-bar input:focus { border-color: var(--accent); }
.search-bar .search-icon {
  position: absolute;
  left: 10px;
  color: var(--text-muted);
  font-size: 0.9rem;
  pointer-events: none;
}

/* =====================
   INVOICE BUILDER
   ===================== */
.invoice-builder {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 24px;
  align-items: start;
}

.line-items-table {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.line-items-table table thead th {
  background: var(--bg-secondary);
  padding: 10px 12px;
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  font-weight: 600;
}

.line-items-table table tbody td {
  padding: 6px 6px;
  border-bottom: 1px solid var(--border);
  vertical-align: middle;
}

.line-items-table table tbody tr:last-child td { border-bottom: none; }

.line-input {
  background: transparent;
  border: 1px solid transparent;
  border-radius: 6px;
  padding: 6px 8px;
  color: var(--text-primary);
  font-size: 0.85rem;
  width: 100%;
  outline: none;
  font-family: 'Inter', sans-serif;
  transition: var(--transition);
}

.line-input:focus, .line-input:hover {
  background: var(--bg-input);
  border-color: var(--border);
}

.line-input[type="number"] { text-align: right; }

.add-line-btn {
  padding: 10px 16px;
  background: var(--bg-secondary);
  border: none;
  border-top: 1px solid var(--border);
  color: var(--accent);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  width: 100%;
  text-align: left;
  transition: var(--transition);
  font-family: 'Inter', sans-serif;
}

.add-line-btn:hover { background: var(--bg-card-hover); }

.invoice-totals-box {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  position: sticky;
  top: 80px;
}

.total-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 7px 0;
  border-bottom: 1px solid var(--border);
  font-size: 0.875rem;
}

.total-row:last-child { border-bottom: none; }
.total-row.grand { font-weight: 700; font-size: 1.05rem; color: var(--accent); padding-top: 14px; }
.total-label { color: var(--text-muted); }
.total-value { color: var(--text-primary); font-weight: 500; }

/* =====================
   AUTOCOMPLETE
   ===================== */
.autocomplete-wrapper { position: relative; }

.autocomplete-dropdown {
  position: absolute;
  top: 100%; left: 0;
  width: 100%;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow);
  z-index: 500;
  max-height: 220px;
  overflow-y: auto;
  display: none;
}

.autocomplete-item {
  padding: 9px 14px;
  cursor: pointer;
  font-size: 0.875rem;
  transition: var(--transition);
  border-bottom: 1px solid var(--border);
}

.autocomplete-item:last-child { border-bottom: none; }
.autocomplete-item:hover { background: var(--bg-card-hover); color: var(--accent); }
.autocomplete-item .item-sub { font-size: 0.75rem; color: var(--text-muted); }

/* =====================
   TABS
   ===================== */
.tabs {
  display: flex;
  gap: 4px;
  border-bottom: 2px solid var(--border);
  margin-bottom: 24px;
}

.tab-item {
  padding: 10px 18px;
  border-radius: var(--radius-sm) var(--radius-sm) 0 0;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-muted);
  cursor: pointer;
  border: none;
  background: none;
  transition: var(--transition);
  font-family: 'Inter', sans-serif;
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  text-decoration: none;
}

.tab-item:hover { color: var(--text-primary); }
.tab-item.active { color: var(--accent); border-bottom-color: var(--accent); }

/* =====================
   FILTER BAR
   ===================== */
.filter-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 20px;
}

/* =====================
   EMPTY STATE
   ===================== */
.empty-state {
  text-align: center;
  padding: 60px 20px;
}

.empty-icon {
  font-size: 3rem;
  margin-bottom: 16px;
  opacity: 0.4;
}

.empty-title {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

.empty-desc {
  color: var(--text-muted);
  font-size: 0.875rem;
  margin-bottom: 20px;
}

/* =====================
   MODAL
   ===================== */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.7);
  backdrop-filter: blur(4px);
  z-index: 900;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease;
}

.modal-overlay.active { opacity: 1; pointer-events: all; }

.modal {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  max-width: 540px;
  width: 90%;
  box-shadow: var(--shadow);
  transform: scale(0.95);
  transition: transform 0.2s ease;
}

.modal-overlay.active .modal { transform: scale(1); }

.modal-header {
  padding: 18px 24px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-title { font-weight: 700; font-size: 1rem; }
.modal-body { padding: 24px; }
.modal-footer { padding: 16px 24px; border-top: 1px solid var(--border); display: flex; gap: 10px; justify-content: flex-end; }
.modal-close { background: none; border: none; color: var(--text-muted); cursor: pointer; font-size: 1.1rem; }

/* =====================
   RESPONSIVE
   ===================== */
@media (max-width: 900px) {
  .app-layout {
    grid-template-columns: 1fr;
    grid-template-rows: var(--header-h) 1fr;
  }

  .sidebar {
    position: fixed;
    left: -100%;
    transition: left 0.3s ease;
  }

  .sidebar.open { left: 0; }

  .main-content { padding: 16px; }

  .invoice-builder {
    grid-template-columns: 1fr;
  }

  .form-row.col-2,
  .form-row.col-3,
  .form-row.col-4 { grid-template-columns: 1fr; }
}

/* =====================
   UTILITIES
   ===================== */
.text-primary   { color: var(--text-primary) !important; }
.text-secondary { color: var(--text-secondary) !important; }
.text-muted     { color: var(--text-muted) !important; }
.text-accent    { color: var(--accent) !important; }
.text-success   { color: var(--success) !important; }
.text-danger    { color: var(--danger) !important; }
.text-warning   { color: var(--warning) !important; }
.text-right     { text-align: right; }
.text-center    { text-align: center; }

.fw-600 { font-weight: 600; }
.fw-700 { font-weight: 700; }

.d-flex { display: flex; }
.align-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-8  { gap: 8px; }
.gap-12 { gap: 12px; }
.gap-16 { gap: 16px; }
.gap-24 { gap: 24px; }

.mb-0  { margin-bottom: 0; }
.mb-8  { margin-bottom: 8px; }
.mb-16 { margin-bottom: 16px; }
.mb-24 { margin-bottom: 24px; }
.mb-32 { margin-bottom: 32px; }
.mt-8  { margin-top: 8px; }
.mt-16 { margin-top: 16px; }

.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.grid-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 20px; }

.divider { border: none; border-top: 1px solid var(--border); margin: 20px 0; }

.amt { font-family: 'Sora', monospace; }

/* Glow hover for interactive cards */
.glow-hover { transition: box-shadow 0.2s ease, transform 0.2s ease; }
.glow-hover:hover { box-shadow: var(--shadow-glow); transform: translateY(-2px); }

/* =====================
   PRINT MEDIA
   ===================== */
@media print {
  .sidebar, .header, .page-header .d-flex.gap-8, .modal, .footer, .btn, .autocomplete-dropdown { display: none !important; }
  .app-layout { grid-template-columns: 1fr; grid-template-rows: 1fr; display: block; }
  .main-content { padding: 0 !important; margin: 0 !important; width: 100% !important; }
  .card { border: none !important; box-shadow: none !important; margin-bottom: 20px !important; }
  .card-header { padding: 0 0 10px 0 !important; border-bottom: 2px solid #ccc !important; }
  .table-wrapper { overflow: visible !important; border: none !important; }
  table { width: 100% !important; max-width: 100% !important; page-break-inside: auto; }
  tr { page-break-inside: avoid; page-break-after: auto; }
  body, html { background: #fff !important; width: 100% !important; }
  .grid-2, .grid-3 { display: flex !important; flex-wrap: wrap; gap: 20px; }
  .grid-2 > div { flex: 1; min-width: 45%; }
  * { -webkit-print-color-adjust: exact !important; print-color-adjust: exact !important; }
}