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

:root {
  --navy-950: #0f1b33;
  --navy-900: #16244a;
  --navy-800: #1c2f5e;
  --navy-700: #24407c;
  --blue-600: #2e5eaa;
  --blue-500: #3b73c9;
  --blue-100: #e8eefb;
  --bg: #f4f6fb;
  --surface: #ffffff;
  --border: #dde3ef;
  --text: #1c2434;
  --text-muted: #64708a;
  --green: #1f8a5f;
  --green-bg: #e5f6ee;
  --amber: #b3720c;
  --amber-bg: #fdf1dd;
  --red: #c23c3c;
  --red-bg: #fbe9e9;
  --radius: 8px;
  --sidebar-w: 250px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: 'Inter', system-ui, -apple-system, Segoe UI, Arial, sans-serif;
  font-size: 14px;
  line-height: 1.5;
}

a { color: var(--blue-600); text-decoration: none; }
a:hover { text-decoration: underline; }

.app-shell {
  display: flex;
  min-height: 100vh;
}

/* ---------- Sidebar ---------- */
.sidebar {
  width: var(--sidebar-w);
  flex-shrink: 0;
  background: linear-gradient(180deg, var(--navy-950), var(--navy-900) 60%);
  color: #cdd8ee;
  display: flex;
  flex-direction: column;
  position: sticky;
  top: 0;
  height: 100vh;
}

.sidebar-brand {
  padding: 22px 20px 18px;
  border-bottom: 1px solid rgba(255,255,255,.08);
}

.sidebar-brand .brand-name {
  color: #fff;
  font-weight: 700;
  font-size: 16px;
  letter-spacing: .2px;
}

.sidebar-brand .brand-sub {
  color: #8ea3cf;
  font-size: 12px;
  margin-top: 2px;
}

.sidebar-nav {
  flex: 1;
  padding: 14px 10px;
  overflow-y: auto;
}

.sidebar-section-label {
  font-size: 11px;
  color: #6f83ad;
  padding: 14px 12px 6px;
  font-weight: 600;
}

.sidebar-nav a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 12px;
  border-radius: 7px;
  color: #c3d0ea;
  font-size: 13.5px;
  font-weight: 500;
  margin-bottom: 2px;
}

.sidebar-nav a:hover {
  background: rgba(255,255,255,.06);
  text-decoration: none;
  color: #fff;
}

.sidebar-nav a.active {
  background: var(--blue-600);
  color: #fff;
}

.sidebar-nav .nav-icon {
  width: 16px;
  text-align: center;
  opacity: .9;
}

.sidebar-foot {
  padding: 14px 20px;
  border-top: 1px solid rgba(255,255,255,.08);
  font-size: 11.5px;
  color: #6f83ad;
}

/* ---------- Main area ---------- */
.main {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
}

.topbar {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: 16px 28px;
  display: flex;
  align-items: baseline;
  justify-content: space-between;
}

.topbar h1 {
  font-size: 19px;
  font-weight: 700;
  margin: 0;
  color: var(--navy-950);
}

.topbar .topbar-sub {
  font-size: 12.5px;
  color: var(--text-muted);
  margin-top: 3px;
}

.content {
  padding: 24px 28px 60px;
  flex: 1;
}

.flash {
  padding: 11px 16px;
  border-radius: var(--radius);
  margin-bottom: 18px;
  font-size: 13.5px;
  border: 1px solid transparent;
}
.flash-success { background: var(--green-bg); color: var(--green); border-color: #bfe6d3; }
.flash-error { background: var(--red-bg); color: var(--red); border-color: #f0c6c6; }

/* ---------- Cards / panels ---------- */
.card {
  background: var(--surface);
  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: 15px;
  margin: 0;
  font-weight: 600;
  color: var(--navy-950);
}

.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
  gap: 16px;
  margin-bottom: 22px;
}

.stat-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-left: 4px solid var(--blue-600);
  border-radius: var(--radius);
  padding: 16px 18px;
}

.stat-card .stat-label {
  font-size: 12px;
  color: var(--text-muted);
  font-weight: 500;
}

.stat-card .stat-value {
  font-size: 24px;
  font-weight: 700;
  color: var(--navy-950);
  margin-top: 4px;
  font-variant-numeric: tabular-nums;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 9px 16px;
  border-radius: 7px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  font-size: 13.5px;
  font-weight: 600;
  cursor: pointer;
  font-family: inherit;
}
.btn:hover { background: #f1f4fa; text-decoration: none; }
.btn-primary { background: var(--blue-600); border-color: var(--blue-600); color: #fff; }
.btn-primary:hover { background: var(--navy-700); }
.btn-danger { background: var(--red-bg); border-color: #f0c6c6; color: var(--red); }
.btn-danger:hover { background: #f6d6d6; }
.btn-sm { padding: 6px 11px; font-size: 12.5px; }

/* ---------- Tables ---------- */
table.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13.5px;
}

.data-table th {
  text-align: left;
  padding: 10px 12px;
  background: var(--blue-100);
  color: var(--navy-900);
  font-weight: 600;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}

.data-table td {
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
  vertical-align: middle;
}

.data-table tbody tr:hover { background: #f8fafd; }
.data-table .num { text-align: right; font-variant-numeric: tabular-nums; }
.data-table .actions { white-space: nowrap; text-align: right; }

.badge {
  display: inline-block;
  padding: 3px 9px;
  border-radius: 20px;
  font-size: 11.5px;
  font-weight: 600;
}
.badge-blue { background: var(--blue-100); color: var(--blue-600); }
.badge-green { background: var(--green-bg); color: var(--green); }
.badge-amber { background: var(--amber-bg); color: var(--amber); }
.badge-gray { background: #eef0f5; color: var(--text-muted); }

.empty-state {
  text-align: center;
  padding: 50px 20px;
  color: var(--text-muted);
}
.empty-state .empty-icon { font-size: 30px; margin-bottom: 10px; }

/* ---------- Forms ---------- */
.form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
}

.field { margin-bottom: 4px; }

.field label {
  display: block;
  font-size: 12.5px;
  font-weight: 600;
  color: var(--navy-900);
  margin-bottom: 5px;
}

.field .hint {
  font-size: 11.5px;
  color: var(--text-muted);
  margin-top: 4px;
}

input[type="text"], input[type="number"], input[type="date"], select, textarea {
  width: 100%;
  padding: 9px 11px;
  border: 1px solid var(--border);
  border-radius: 7px;
  font-size: 13.5px;
  font-family: inherit;
  background: #fff;
  color: var(--text);
}

input:focus, select:focus, textarea:focus {
  outline: 2px solid var(--blue-500);
  outline-offset: 1px;
  border-color: var(--blue-500);
}

textarea { resize: vertical; min-height: 70px; }

.checkbox-row {
  display: flex;
  align-items: center;
  gap: 8px;
}
.checkbox-row input { width: auto; }

.section-title {
  font-size: 13.5px;
  font-weight: 700;
  color: var(--navy-950);
  margin: 26px 0 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border);
}
.section-title:first-child { margin-top: 0; }

#size-qty-grid, #accessory-rows {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.size-qty-item, .accessory-row {
  display: grid;
  grid-template-columns: 1.4fr 1fr auto;
  gap: 10px;
  align-items: center;
  background: #fafbfd;
  border: 1px solid var(--border);
  border-radius: 7px;
  padding: 10px 12px;
}

.accessory-row {
  grid-template-columns: 2fr 1fr 1fr 1fr auto;
}

.row-remove {
  background: none;
  border: none;
  color: var(--red);
  cursor: pointer;
  font-size: 16px;
  padding: 4px 8px;
}

.form-actions {
  display: flex;
  gap: 10px;
  margin-top: 22px;
  padding-top: 18px;
  border-top: 1px solid var(--border);
}

/* ---------- Print page ---------- */
.print-page {
  max-width: 850px;
  margin: 30px auto;
  background: #fff;
  padding: 40px 46px;
}
.print-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  border-bottom: 3px solid var(--navy-900);
  padding-bottom: 16px;
  margin-bottom: 22px;
}
.print-head h1 { font-size: 20px; margin: 0 0 4px; color: var(--navy-950); }
.print-head .meta { font-size: 12.5px; color: var(--text-muted); }
.print-info-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
  margin-bottom: 24px;
}
.print-info-grid .info-box {
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 10px 12px;
}
.print-info-grid .info-label { font-size: 10.5px; color: var(--text-muted); text-transform: uppercase; letter-spacing: .3px; }
.print-info-grid .info-value { font-size: 14px; font-weight: 700; color: var(--navy-950); margin-top: 3px; }

.print-toolbar {
  max-width: 850px;
  margin: 18px auto 0;
  display: flex;
  justify-content: flex-end;
  gap: 10px;
}

@media print {
  .no-print { display: none !important; }
  body { background: #fff; }
  .print-page { margin: 0; padding: 0; max-width: 100%; }
}

@media (max-width: 900px) {
  .app-shell { flex-direction: column; }
  .sidebar { width: 100%; height: auto; position: relative; }
  .accessory-row, .size-qty-item { grid-template-columns: 1fr; }
}