@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@300;400;500;600;700&family=Space+Mono:wght@400;700&display=swap');

:root {
  /* --- Light Theme Variables (Main Content) --- */
  --bg: #f1f5f9;          /* Page Background (Light Gray) */
  --surface: #ffffff;      /* Card Background (White) */
  --surface2: #f8fafc;     /* Input Background (Very Light Gray) */
  --surface3: #e2e8f0;     /* Hover/Active State */
  --border: #cbd5e1;
  
  /* --- Text Colors --- */
  --text: #0f172a;         /* Main Text (Dark Slate) */
  --text-muted: #64748b;   /* Secondary Text (Gray) */
  --text-dim: #94a3b8;
  
  /* --- Brand Colors --- */
  --primary: #6366f1;
  --primary-dark: #4f46e5;
  --primary-glow: rgba(99,102,241,0.1); /* Light Glow for White Bg */
  --accent: #0891b2;       /* Cyan (Darkened for contrast) */
  --success: #16a34a;
  --danger: #dc2626;
  --warning: #d97706;
  --info: #2563eb;
  --orange: #ea580c;
  
  /* --- Layout --- */
  --sidebar-w: 250px;
  --radius: 10px;
  --radius-sm: 6px;
  --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  
  --font: 'DM Sans', sans-serif;
  --mono: 'Space Mono', monospace;
}

* { margin:0; padding:0; box-sizing:border-box; }
body { font-family:var(--font); background:var(--bg); color:var(--text); min-height:100vh; font-size:14px; line-height:1.5; }

/* Scrollbar */
::-webkit-scrollbar { width:6px; height:6px; }
::-webkit-scrollbar-track { background:var(--surface2); }
::-webkit-scrollbar-thumb { background:var(--surface3); border-radius:3px; }

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

/* --- SIDEBAR (FORCE DARK) --- */
.sidebar {
  width:var(--sidebar-w); 
  background: #0f172a; /* Hardcoded Dark Sidebar Background */
  border-right: 1px solid #1e293b;
  position:fixed; top:0; left:0; height:100vh;
  display:flex; flex-direction:column; z-index:100;
  overflow-y:auto;
  color: #f8fafc; /* Default light text */
}

.sidebar-brand {
  padding:18px 16px; border-bottom:1px solid #1e293b;
  display:flex; align-items:center; gap:10px; flex-shrink:0;
}
.brand-icon { width:38px; height:38px; background:linear-gradient(135deg,var(--primary),var(--accent)); border-radius:10px; display:flex; align-items:center; justify-content:center; font-size:18px; flex-shrink:0; }
.brand-name { font-weight:700; font-size:12.5px; line-height:1.3; color: #fff; }
.brand-name span { color:var(--primary); display:block; font-size:10.5px; font-weight:500; }

.nav { padding:10px 8px; flex:1; }
.nav-section { font-size:9.5px; font-weight:700; color:#64748b; text-transform:uppercase; letter-spacing:1.2px; padding:10px 10px 4px; }

.nav-link {
  display:flex; align-items:center; gap:9px;
  padding:8px 10px; border-radius:var(--radius-sm);
  color:#94a3b8; text-decoration:none; /* Muted text for inactive */
  font-size:13px; font-weight:500;
  transition:all 0.15s; margin-bottom:1px;
}
.nav-link:hover { background: rgba(255,255,255,0.05); color: #f1f5f9; }
.nav-link.active { background:rgba(99,102,241,0.15); color:var(--primary); border-left: 3px solid var(--primary); }
.nav-link .icon { width:17px; text-align:center; font-size:14px; flex-shrink:0; }
.nav-link .badge { margin-left:auto; background:var(--danger); color:#fff; border-radius:10px; font-size:9px; padding:1px 5px; }

.sidebar-user {
  padding:12px 8px; border-top:1px solid #1e293b; flex-shrink:0;
}
.user-card { display:flex; align-items:center; gap:9px; padding:8px 10px; background: rgba(255,255,255,0.05); border-radius:var(--radius-sm); }
.user-av { width:30px; height:30px; border-radius:8px; background:linear-gradient(135deg,var(--primary),var(--accent)); display:flex; align-items:center; justify-content:center; font-weight:700; font-size:12px; color:#fff; flex-shrink:0; }
.user-info strong { display:block; font-size:12px; font-weight:600; color: #fff; }
.user-info small { color:#94a3b8; font-size:10.5px; }

/* --- MAIN CONTENT AREA (LIGHT) --- */
.main { margin-left:var(--sidebar-w); flex:1; display:flex; flex-direction:column; min-height:100vh; }
.topbar { background:var(--surface); border-bottom:1px solid var(--border); padding:12px 24px; display:flex; align-items:center; gap:14px; position:sticky; top:0; z-index:50; }
.topbar h1 { font-size:15px; font-weight:600; flex:1; }
.topbar .meta { font-size:12px; color:var(--text-muted); display:flex; align-items:center; gap:14px; }
.page { padding:22px; flex:1; }

/* Cards */
.card { background:var(--surface); border:1px solid var(--border); border-radius:var(--radius); overflow:hidden; box-shadow:var(--shadow); }
.card-header { padding:14px 18px; border-bottom:1px solid var(--border); display:flex; align-items:center; gap:10px; background:var(--surface); }
.card-header h2 { font-size:13.5px; font-weight:600; flex:1; }
.card-body { padding:18px; }
.card-footer { padding:12px 18px; border-top:1px solid var(--border); }

/* Stats */
.stats { display:grid; grid-template-columns:repeat(auto-fit,minmax(190px,1fr)); gap:14px; margin-bottom:22px; }
.stat { background:var(--surface); border:1px solid var(--border); border-radius:var(--radius); padding:18px; position:relative; overflow:hidden; }
.stat::after { content:''; position:absolute; top:0; left:0; right:0; height:3px; }
.stat.indigo::after { background:var(--primary); }
.stat.cyan::after { background:var(--accent); }
.stat.green::after { background:var(--success); }
.stat.red::after { background:var(--danger); }
.stat.orange::after { background:var(--orange); }
.stat.yellow::after { background:var(--warning); }
.stat-label { font-size:10.5px; font-weight:700; color:var(--text-muted); text-transform:uppercase; letter-spacing:0.5px; margin-bottom:6px; }
.stat-val { font-size:24px; font-weight:700; font-family:var(--mono); color: var(--text); }
.stat-sub { font-size:11px; color:var(--text-muted); margin-top:3px; }
.stat-ico { position:absolute; right:14px; top:50%; transform:translateY(-50%); font-size:34px; opacity:0.08; }

/* Buttons */
.btn { display:inline-flex; align-items:center; gap:5px; padding:8px 14px; border-radius:var(--radius-sm); font-family:var(--font); font-size:13px; font-weight:500; cursor:pointer; border:1px solid transparent; text-decoration:none; transition:all 0.15s; white-space:nowrap; }
.btn-primary { background:var(--primary); color:#fff; border-color:var(--primary); }
.btn-primary:hover { background:var(--primary-dark); }
.btn-secondary { background:var(--surface); color:var(--text); border-color:var(--border); }
.btn-secondary:hover { background:var(--surface2); }
.btn-success { background:var(--success); color:#fff; border-color:var(--success); }
.btn-danger { background:var(--danger); color:#fff; border-color:var(--danger); }
.btn-danger:hover { opacity:.9; }
.btn-warning { background:var(--warning); color:#fff; border-color:var(--warning); }
.btn-outline { background:transparent; color:var(--primary); border-color:var(--primary); }
.btn-outline:hover { background:var(--primary-glow); }
.btn-sm { padding:5px 10px; font-size:12px; }
.btn-xs { padding:3px 8px; font-size:11px; }
.btn-icon { padding:7px; }

/* Forms */
.form-group { margin-bottom:14px; }
.form-label { display:block; font-size:11px; font-weight:700; color:var(--text-muted); text-transform:uppercase; letter-spacing:0.4px; margin-bottom:5px; }
.form-control { width:100%; padding:8px 11px; background:var(--surface2); border:1px solid var(--border); border-radius:var(--radius-sm); color:var(--text); font-family:var(--font); font-size:13px; outline:none; transition:border-color .15s,box-shadow .15s; }
.form-control:focus { border-color:var(--primary); box-shadow:0 0 0 3px var(--primary-glow); }
.form-control::placeholder { color:#94a3b8; }
select.form-control { cursor:pointer; }
textarea.form-control { resize:vertical; min-height:75px; }
.form-row { display:grid; grid-template-columns:1fr 1fr; gap:14px; }
.form-row-3 { display:grid; grid-template-columns:1fr 1fr 1fr; gap:14px; }
.form-row-4 { display:grid; grid-template-columns:1fr 1fr 1fr 1fr; gap:14px; }
.input-group { display:flex; }
.input-group .form-control { border-radius:var(--radius-sm) 0 0 var(--radius-sm); }
.input-group .btn { border-radius:0 var(--radius-sm) var(--radius-sm) 0; }

/* Tables */
.table-wrap { overflow-x:auto; }
table { width:100%; border-collapse:collapse; }
thead tr { border-bottom:1px solid var(--border); background: #f8fafc; }
thead th { padding:9px 13px; font-size:10.5px; font-weight:700; color:var(--text-muted); text-transform:uppercase; letter-spacing:0.5px; text-align:left; white-space:nowrap; }
tbody tr { border-bottom:1px solid var(--border); transition:background .1s; }
tbody tr:last-child { border-bottom:none; }
tbody tr:hover { background:var(--surface2); }
tbody td { padding:11px 13px; font-size:13px; }
tfoot tr { border-top:2px solid var(--border); }
tfoot td { padding:10px 13px; font-weight:600; }

/* Badges (Updated for Light Theme) */
.badge { display:inline-flex; align-items:center; gap:3px; padding:2px 8px; border-radius:20px; font-size:10.5px; font-weight:600; }
.badge-green  { background:#dcfce7; color:#166534; }
.badge-red    { background:#fee2e2; color:#991b1b; }
.badge-yellow { background:#fef3c7; color:#92400e; }
.badge-blue   { background:#dbeafe; color:#1e40af; }
.badge-indigo { background:#e0e7ff; color:#3730a3; }
.badge-cyan   { background:#cffafe; color:#155e75; }
.badge-orange { background:#ffedd5; color:#9a3412; }
.badge-gray   { background:#f1f5f9; color:#475569; }

/* Modal */
.modal-overlay { display:none; position:fixed; inset:0; background:rgba(0,0,0,.5); z-index:1000; align-items:center; justify-content:center; backdrop-filter:blur(2px); }
.modal-overlay.open { display:flex; }
.modal { background:var(--surface); border:1px solid var(--border); border-radius:var(--radius); width:90%; max-width:580px; max-height:92vh; overflow-y:auto; box-shadow:0 20px 25px -5px rgba(0,0,0,0.1); }
.modal-lg { max-width:900px; }
.modal-xl { max-width:1100px; }
.modal-header { padding:16px 18px; border-bottom:1px solid var(--border); display:flex; align-items:center; gap:10px; }
.modal-header h2 { font-size:14px; font-weight:600; flex:1; }
.modal-body { padding:18px; }
.modal-footer { padding:14px 18px; border-top:1px solid var(--border); display:flex; justify-content:flex-end; gap:8px; }
.modal-close { background:none; border:none; color:var(--text-muted); cursor:pointer; font-size:17px; padding:3px; line-height:1; }
.modal-close:hover { color:var(--text); }

/* Alerts */
.alert { padding:11px 14px; border-radius:var(--radius-sm); font-size:13px; margin-bottom:14px; border:1px solid; }
.alert-success { background:#f0fdf4; border-color:var(--success); color:#166534; }
.alert-danger  { background:#fef2f2; border-color:var(--danger); color:#991b1b; }
.alert-warning { background:#fffbeb; border-color:var(--warning); color:#92400e; }
.alert-info    { background:#eff6ff; border-color:var(--info); color:#1e40af; }

/* Tabs */
.tabs { display:flex; gap:2px; border-bottom:1px solid var(--border); margin-bottom:18px; }
.tab-btn { padding:8px 16px; background:none; border:none; border-bottom:2px solid transparent; color:var(--text-muted); font-family:var(--font); font-size:13px; font-weight:500; cursor:pointer; transition:all .15s; margin-bottom:-1px; }
.tab-btn.active { color:var(--primary); border-bottom-color:var(--primary); }
.tab-btn:hover { color:var(--text); }

/* Order Items Table */
.items-table { width:100%; border-collapse:collapse; margin-top:10px; }
.items-table th { padding:8px 10px; font-size:11px; font-weight:700; color:var(--text-muted); text-transform:uppercase; border-bottom:1px solid var(--border); text-align:left; background: #f8fafc; }
.items-table td { padding:7px 8px; border-bottom:1px solid var(--border); vertical-align:middle; }
.items-table .form-control { padding:5px 8px; font-size:12.5px; }
.items-table tr:last-child td { border-bottom:none; }

/* Ledger colors */
.dr { color:var(--danger); }
.cr { color:var(--success); }

/* Toast */
#toast-container { position:fixed; bottom:18px; right:18px; z-index:9999; display:flex; flex-direction:column; gap:7px; }
.toast { padding:11px 16px; border-radius:var(--radius-sm); font-size:13px; box-shadow:0 10px 15px -3px rgba(0,0,0,0.1); animation:toastIn .3s ease; min-width:210px; display:flex; align-items:center; gap:7px; color: #fff; }
.toast.success { background:var(--success); }
.toast.error   { background:var(--danger); }
.toast.info    { background:var(--primary); }
@keyframes toastIn { from{transform:translateY(14px);opacity:0} to{transform:translateY(0);opacity:1} }

/* Pagination */
.pagination { display:flex; gap:4px; justify-content:center; margin-top:14px; }
.page-btn { width:30px; height:30px; display:flex; align-items:center; justify-content:center; border-radius:var(--radius-sm); border:1px solid var(--border); background:var(--surface); color:var(--text); cursor:pointer; font-size:12.5px; text-decoration:none; transition:all .15s; }
.page-btn:hover,.page-btn.active { background:var(--primary-glow); border-color:var(--primary); color:var(--primary); }

/* Print */
@media print {
  .sidebar,.topbar,.no-print { display:none !important; }
  .main { margin-left:0 !important; }
  body { background:#fff; color:#000; }
  .card { border:1px solid #ccc; box-shadow:none; }
}

/* Utility */
.flex { display:flex; }
.flex-between { display:flex; justify-content:space-between; align-items:center; }
.flex-gap { display:flex; gap:8px; align-items:center; }
.flex-gap-sm { display:flex; gap:5px; align-items:center; }
.grid-2 { display:grid; grid-template-columns:1fr 1fr; gap:16px; }
.grid-3 { display:grid; grid-template-columns:1fr 1fr 1fr; gap:16px; }
.w-full { width:100%; }
.text-muted { color:var(--text-muted); }
.text-sm { font-size:12px; }
.text-xs { font-size:11px; }
.text-mono { font-family:var(--mono); }
.text-right { text-align:right; }
.text-center { text-align:center; }
.text-primary { color:var(--primary); }
.text-success { color:var(--success); }
.text-danger  { color:var(--danger); }
.text-warning { color:var(--warning); }
.font-bold { font-weight:700; }
.mt-1{margin-top:8px}.mt-2{margin-top:16px}.mt-3{margin-top:24px}
.mb-1{margin-bottom:8px}.mb-2{margin-bottom:16px}.mb-3{margin-bottom:24px}
.hidden { display:none !important; }
.divider { border:none; border-top:1px solid var(--border); margin:16px 0; }

/* Status colors */
.status-draft      { color:var(--text-muted); }
.status-confirmed  { color:var(--info); }
.status-dispatched { color:var(--warning); }
.status-delivered  { color:var(--success); }
.status-cancelled  { color:var(--danger); }
.status-returned   { color:var(--orange); }
.status-received   { color:var(--success); }
.status-partial    { color:var(--warning); }
.status-ordered    { color:var(--info); }