/* AutoAccounts - Professional Bookkeeping Platform */
:root {
  --primary: #1e3a5f;
  --primary-light: #2d5a8e;
  --primary-dark: #142840;
  --accent: #0ea5e9;
  --accent-hover: #0284c7;
  --success: #16a34a;
  --warning: #d97706;
  --danger: #dc2626;
  --info: #2563eb;
  --bg: #f0f4f8;
  --bg-card: #ffffff;
  --bg-sidebar: #1e3a5f;
  --text: #1e293b;
  --text-muted: #64748b;
  --text-light: #94a3b8;
  --border: #e2e8f0;
  --border-focus: #0ea5e9;
  --shadow: 0 1px 3px rgba(0,0,0,0.1), 0 1px 2px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 6px rgba(0,0,0,0.07), 0 2px 4px rgba(0,0,0,0.06);
  --shadow-lg: 0 10px 15px rgba(0,0,0,0.1), 0 4px 6px rgba(0,0,0,0.05);
  --radius: 8px;
  --radius-lg: 12px;
  --sidebar-width: 240px;
  --header-height: 60px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 14px; }
body { font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif; background: var(--bg); color: var(--text); line-height: 1.5; }

/* Loading Screen */
.loading-screen { position: fixed; inset: 0; background: var(--primary); display: flex; align-items: center; justify-content: center; z-index: 9999; }
.loading-logo { text-align: center; color: white; }
.loading-logo .logo-icon { font-size: 3rem; display: block; margin-bottom: 1rem; }
.loading-logo h1 { font-size: 2rem; font-weight: 700; margin-bottom: 1.5rem; }
.loading-spinner { width: 40px; height: 40px; border: 3px solid rgba(255,255,255,0.3); border-top-color: white; border-radius: 50%; animation: spin 0.8s linear infinite; margin: 0 auto; }
@keyframes spin { to { transform: rotate(360deg); } }

/* Auth Pages */
.auth-page { min-height: 100vh; display: flex; align-items: center; justify-content: center; background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%); padding: 1rem; }
.auth-card { background: white; border-radius: var(--radius-lg); padding: 2.5rem; width: 100%; max-width: 420px; box-shadow: var(--shadow-lg); }
.auth-logo { text-align: center; margin-bottom: 2rem; }
.auth-logo .logo-icon { font-size: 2.5rem; display: block; }
.auth-logo h1 { font-size: 1.75rem; font-weight: 700; color: var(--primary); margin-top: 0.5rem; }
.auth-logo p { color: var(--text-muted); font-size: 0.875rem; margin-top: 0.25rem; }
.auth-card h2 { font-size: 1.25rem; font-weight: 600; color: var(--text); margin-bottom: 1.5rem; }

/* App Layout */
.app-layout { display: flex; min-height: 100vh; }
.sidebar { width: var(--sidebar-width); background: var(--bg-sidebar); color: white; display: flex; flex-direction: column; position: fixed; top: 0; left: 0; height: 100vh; z-index: 100; transition: transform 0.3s; }
.sidebar-header { padding: 1.25rem 1rem; border-bottom: 1px solid rgba(255,255,255,0.1); }
.sidebar-logo { display: flex; align-items: center; gap: 0.75rem; text-decoration: none; color: white; }
.sidebar-logo .logo-icon { font-size: 1.5rem; }
.sidebar-logo span { font-size: 1.1rem; font-weight: 700; }
.company-switcher { padding: 0.75rem 1rem; border-bottom: 1px solid rgba(255,255,255,0.1); }
.company-switcher select { width: 100%; background: rgba(255,255,255,0.1); border: 1px solid rgba(255,255,255,0.2); color: white; padding: 0.5rem 0.75rem; border-radius: var(--radius); font-size: 0.8rem; cursor: pointer; }
.company-switcher select option { background: var(--primary); color: white; }
.sidebar-nav { flex: 1; padding: 1rem 0; overflow-y: auto; }
.nav-section { margin-bottom: 1.5rem; }
.nav-section-title { padding: 0 1rem 0.5rem; font-size: 0.7rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.05em; color: rgba(255,255,255,0.4); }
.nav-item { display: flex; align-items: center; gap: 0.75rem; padding: 0.625rem 1rem; color: rgba(255,255,255,0.75); text-decoration: none; font-size: 0.875rem; cursor: pointer; border: none; background: none; width: 100%; text-align: left; transition: all 0.15s; border-radius: 0; }
.nav-item:hover { background: rgba(255,255,255,0.1); color: white; }
.nav-item.active { background: rgba(255,255,255,0.15); color: white; border-left: 3px solid var(--accent); }
.nav-item .nav-icon { width: 18px; text-align: center; font-size: 1rem; }
.sidebar-footer { padding: 1rem; border-top: 1px solid rgba(255,255,255,0.1); }
.user-info { display: flex; align-items: center; gap: 0.75rem; margin-bottom: 0.75rem; }
.user-avatar { width: 36px; height: 36px; background: var(--accent); border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: 600; font-size: 0.875rem; flex-shrink: 0; }
.user-details { flex: 1; min-width: 0; }
.user-name { font-size: 0.8rem; font-weight: 600; color: white; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.user-role { font-size: 0.7rem; color: rgba(255,255,255,0.5); }
.btn-logout { width: 100%; padding: 0.5rem; background: rgba(255,255,255,0.1); border: 1px solid rgba(255,255,255,0.2); color: rgba(255,255,255,0.75); border-radius: var(--radius); cursor: pointer; font-size: 0.8rem; transition: all 0.15s; }
.btn-logout:hover { background: rgba(255,255,255,0.2); color: white; }

/* Main Content */
.main-content { margin-left: var(--sidebar-width); flex: 1; display: flex; flex-direction: column; min-height: 100vh; }
.top-bar { height: var(--header-height); background: white; border-bottom: 1px solid var(--border); display: flex; align-items: center; justify-content: space-between; padding: 0 1.5rem; position: sticky; top: 0; z-index: 50; box-shadow: var(--shadow); }
.top-bar-title { font-size: 1.1rem; font-weight: 600; color: var(--text); }
.top-bar-actions { display: flex; align-items: center; gap: 0.75rem; }
.page-content { flex: 1; padding: 1.5rem; }

/* Cards */
.card { background: var(--bg-card); border-radius: var(--radius-lg); box-shadow: var(--shadow); border: 1px solid var(--border); }
.card-header { padding: 1.25rem 1.5rem; border-bottom: 1px solid var(--border); display: flex; align-items: center; justify-content: space-between; }
.card-title { font-size: 1rem; font-weight: 600; color: var(--text); }
.card-body { padding: 1.5rem; }

/* Stats Grid */
.stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 1rem; margin-bottom: 1.5rem; }
.stat-card { background: white; border-radius: var(--radius-lg); padding: 1.25rem; box-shadow: var(--shadow); border: 1px solid var(--border); }
.stat-label { font-size: 0.75rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.05em; color: var(--text-muted); margin-bottom: 0.5rem; }
.stat-value { font-size: 1.75rem; font-weight: 700; color: var(--text); }
.stat-value.success { color: var(--success); }
.stat-value.warning { color: var(--warning); }
.stat-value.danger { color: var(--danger); }
.stat-change { font-size: 0.75rem; color: var(--text-muted); margin-top: 0.25rem; }

/* Buttons */
.btn { display: inline-flex; align-items: center; gap: 0.5rem; padding: 0.5rem 1rem; border-radius: var(--radius); font-size: 0.875rem; font-weight: 500; cursor: pointer; border: none; transition: all 0.15s; text-decoration: none; white-space: nowrap; }
.btn-primary { background: var(--primary); color: white; }
.btn-primary:hover { background: var(--primary-light); }
.btn-accent { background: var(--accent); color: white; }
.btn-accent:hover { background: var(--accent-hover); }
.btn-success { background: var(--success); color: white; }
.btn-success:hover { background: #15803d; }
.btn-danger { background: var(--danger); color: white; }
.btn-danger:hover { background: #b91c1c; }
.btn-outline { background: transparent; border: 1px solid var(--border); color: var(--text); }
.btn-outline:hover { background: var(--bg); }
.btn-sm { padding: 0.375rem 0.75rem; font-size: 0.8rem; }
.btn-lg { padding: 0.75rem 1.5rem; font-size: 1rem; }
.btn-icon { padding: 0.5rem; }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }

/* Forms */
.form-group { margin-bottom: 1rem; }
.form-label { display: block; font-size: 0.8rem; font-weight: 600; color: var(--text); margin-bottom: 0.375rem; }
.form-control { width: 100%; padding: 0.5rem 0.75rem; border: 1px solid var(--border); border-radius: var(--radius); font-size: 0.875rem; color: var(--text); background: white; transition: border-color 0.15s; }
.form-control:focus { outline: none; border-color: var(--border-focus); box-shadow: 0 0 0 3px rgba(14,165,233,0.1); }
.form-control::placeholder { color: var(--text-light); }
select.form-control { cursor: pointer; }
textarea.form-control { resize: vertical; min-height: 80px; }
.form-row { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 1rem; }
.form-hint { font-size: 0.75rem; color: var(--text-muted); margin-top: 0.25rem; }

/* Tables */
.table-wrapper { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; }
thead th { background: var(--bg); padding: 0.75rem 1rem; text-align: left; font-size: 0.75rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.05em; color: var(--text-muted); border-bottom: 1px solid var(--border); white-space: nowrap; }
tbody td { padding: 0.875rem 1rem; border-bottom: 1px solid var(--border); font-size: 0.875rem; color: var(--text); }
tbody tr:hover { background: var(--bg); }
tbody tr:last-child td { border-bottom: none; }
.td-actions { display: flex; gap: 0.5rem; justify-content: flex-end; }

/* Badges */
.badge { display: inline-flex; align-items: center; padding: 0.2rem 0.6rem; border-radius: 9999px; font-size: 0.7rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.03em; }
.badge-success { background: #dcfce7; color: #15803d; }
.badge-warning { background: #fef3c7; color: #b45309; }
.badge-danger { background: #fee2e2; color: #b91c1c; }
.badge-info { background: #dbeafe; color: #1d4ed8; }
.badge-muted { background: #f1f5f9; color: #475569; }
.badge-primary { background: #e0f2fe; color: #0369a1; }

/* Modal */
.modal-overlay { position: fixed; inset: 0; background: rgba(0,0,0,0.5); z-index: 1000; display: flex; align-items: center; justify-content: center; padding: 1rem; }
.modal { background: white; border-radius: var(--radius-lg); box-shadow: var(--shadow-lg); width: 100%; max-width: 600px; max-height: 90vh; display: flex; flex-direction: column; }
.modal-lg { max-width: 900px; }
.modal-header { padding: 1.25rem 1.5rem; border-bottom: 1px solid var(--border); display: flex; align-items: center; justify-content: space-between; flex-shrink: 0; }
.modal-title { font-size: 1rem; font-weight: 600; }
.modal-close { background: none; border: none; font-size: 1.25rem; cursor: pointer; color: var(--text-muted); padding: 0.25rem; border-radius: var(--radius); }
.modal-close:hover { background: var(--bg); color: var(--text); }
.modal-body { padding: 1.5rem; overflow-y: auto; flex: 1; }
.modal-footer { padding: 1rem 1.5rem; border-top: 1px solid var(--border); display: flex; gap: 0.75rem; justify-content: flex-end; flex-shrink: 0; }

/* Alerts */
.alert { padding: 0.875rem 1rem; border-radius: var(--radius); font-size: 0.875rem; margin-bottom: 1rem; display: flex; align-items: flex-start; gap: 0.75rem; }
.alert-success { background: #f0fdf4; border: 1px solid #bbf7d0; color: #15803d; }
.alert-error { background: #fef2f2; border: 1px solid #fecaca; color: #b91c1c; }
.alert-warning { background: #fffbeb; border: 1px solid #fde68a; color: #b45309; }
.alert-info { background: #eff6ff; border: 1px solid #bfdbfe; color: #1d4ed8; }

/* Upload Area */
.upload-area { border: 2px dashed var(--border); border-radius: var(--radius-lg); padding: 2rem; text-align: center; cursor: pointer; transition: all 0.2s; }
.upload-area:hover, .upload-area.drag-over { border-color: var(--accent); background: #f0f9ff; }
.upload-icon { font-size: 2.5rem; margin-bottom: 0.75rem; }
.upload-text { font-size: 0.875rem; color: var(--text-muted); }
.upload-text strong { color: var(--accent); }

/* Invoice items table */
.invoice-items { width: 100%; }
.invoice-items th { background: var(--bg); padding: 0.5rem 0.75rem; font-size: 0.75rem; font-weight: 600; color: var(--text-muted); text-align: left; }
.invoice-items td { padding: 0.5rem 0.75rem; }
.invoice-items input { border: 1px solid var(--border); border-radius: 4px; padding: 0.375rem 0.5rem; font-size: 0.8rem; width: 100%; }
.invoice-totals { margin-top: 1rem; text-align: right; }
.invoice-totals table { margin-left: auto; min-width: 250px; }
.invoice-totals td { padding: 0.375rem 0.75rem; font-size: 0.875rem; }
.invoice-totals .total-row td { font-weight: 700; font-size: 1rem; border-top: 2px solid var(--border); padding-top: 0.75rem; }

/* Empty state */
.empty-state { text-align: center; padding: 3rem 1rem; color: var(--text-muted); }
.empty-state .empty-icon { font-size: 3rem; margin-bottom: 1rem; opacity: 0.5; }
.empty-state h3 { font-size: 1rem; font-weight: 600; color: var(--text); margin-bottom: 0.5rem; }
.empty-state p { font-size: 0.875rem; margin-bottom: 1.5rem; }

/* Tabs */
.tabs { display: flex; border-bottom: 1px solid var(--border); margin-bottom: 1.5rem; gap: 0; }
.tab { padding: 0.75rem 1.25rem; font-size: 0.875rem; font-weight: 500; color: var(--text-muted); cursor: pointer; border-bottom: 2px solid transparent; margin-bottom: -1px; transition: all 0.15s; background: none; border-top: none; border-left: none; border-right: none; }
.tab:hover { color: var(--text); }
.tab.active { color: var(--primary); border-bottom-color: var(--primary); }

/* Search & Filter Bar */
.filter-bar { display: flex; gap: 0.75rem; align-items: center; margin-bottom: 1rem; flex-wrap: wrap; }
.filter-bar .form-control { width: auto; min-width: 200px; }
.search-input { position: relative; }
.search-input input { padding-left: 2.25rem; }
.search-input::before { content: '🔍'; position: absolute; left: 0.75rem; top: 50%; transform: translateY(-50%); font-size: 0.875rem; }

/* Responsive */
@media (max-width: 768px) {
  .sidebar { transform: translateX(-100%); }
  .sidebar.open { transform: translateX(0); }
  .main-content { margin-left: 0; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .form-row { grid-template-columns: 1fr; }
}

/* Utility */
.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-2 { gap: 0.5rem; }
.gap-3 { gap: 0.75rem; }
.gap-4 { gap: 1rem; }
.mt-1 { margin-top: 0.25rem; }
.mt-2 { margin-top: 0.5rem; }
.mt-4 { margin-top: 1rem; }
.mb-4 { margin-bottom: 1rem; }
.mb-6 { margin-bottom: 1.5rem; }
.text-right { text-align: right; }
.text-center { text-align: center; }
.text-muted { color: var(--text-muted); }
.text-sm { font-size: 0.8rem; }
.font-bold { font-weight: 700; }
.font-semibold { font-weight: 600; }
.text-success { color: var(--success); }
.text-danger { color: var(--danger); }
.text-warning { color: var(--warning); }
.w-full { width: 100%; }
.hidden { display: none !important; }
.currency { font-variant-numeric: tabular-nums; }