/* ── Variables ─────────────────────────────────────────────────────────────── */
:root {
  --c-primary:      #1a3a5c;
  --c-primary-dark: #0f2540;
  --c-secondary:    #2c6fad;
  --c-accent:       #e8f2fb;
  --c-border:       #c5d8ec;
  --c-text:         #1a2b3c;
  --c-muted:        #5a6e82;
  --c-white:        #ffffff;
  --c-success:      #1a6b3a;
  --c-error:        #b0281e;

  --header-h:    68px;
  --bar-h:       72px;
  --sidebar-w:   290px;

  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", sans-serif;
  --radius: 6px;
  --shadow: 0 2px 8px rgba(0, 0, 0, 0.10);
}

/* ── Reset ──────────────────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: var(--font);
  color: var(--c-text);
  background: #f3f7fb;
  min-height: 100vh;
}

/* ── Header ─────────────────────────────────────────────────────────────────── */
.header {
  background: var(--c-primary);
  color: var(--c-white);
  height: var(--header-h);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 14px rgba(0, 0, 0, 0.28);
}
.header-inner {
  max-width: 1440px;
  margin: 0 auto;
  padding: 0 28px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.header-brand {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.header-name {
  font-size: 17px;
  font-weight: 700;
  letter-spacing: 0.4px;
}
.header-full {
  font-size: 11px;
  opacity: 0.72;
  font-weight: 400;
}
.header-tag {
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.3px;
  background: rgba(255, 255, 255, 0.13);
  border: 1px solid rgba(255, 255, 255, 0.22);
  padding: 5px 14px;
  border-radius: 20px;
  white-space: nowrap;
}

/* ── Layout ─────────────────────────────────────────────────────────────────── */
.layout {
  display: flex;
  max-width: 1440px;
  margin: 0 auto;
  padding: 24px 28px calc(var(--bar-h) + 24px);
  gap: 24px;
  min-height: calc(100vh - var(--header-h));
}

/* ── Sidebar ────────────────────────────────────────────────────────────────── */
.sidebar {
  width: var(--sidebar-w);
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.card {
  background: var(--c-white);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  padding: 18px 20px;
  box-shadow: var(--shadow);
}

.card-title {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--c-primary);
  margin-bottom: 14px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--c-accent);
}

.filter-actions {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 10px;
  font-size: 12px;
}
.sep { color: var(--c-muted); }

.filter-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.filter-list.scrollable {
  max-height: 380px;
  overflow-y: auto;
  padding-right: 4px;
}

/* ── Checkboxes ─────────────────────────────────────────────────────────────── */
.cb-label {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  cursor: pointer;
  padding: 3px 0;
  user-select: none;
}
.cb-label:hover .cb-text { color: var(--c-secondary); }

.cb {
  width: 16px;
  height: 16px;
  cursor: pointer;
  accent-color: var(--c-secondary);
  flex-shrink: 0;
  margin-top: 1px;
}
.cb-text {
  font-size: 13.5px;
  line-height: 1.35;
  color: var(--c-text);
}

/* ── Main content ────────────────────────────────────────────────────────────── */
.main {
  flex: 1;
  min-width: 0;
}
.main-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
  flex-wrap: wrap;
  gap: 8px;
}
.main-title {
  font-size: 17px;
  font-weight: 700;
  color: var(--c-primary);
}
.main-actions {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
}

/* ── Category grid ───────────────────────────────────────────────────────────── */
.cat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(290px, 1fr));
  gap: 8px;
}

.cat-card {
  background: var(--c-white);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  transition: border-color 0.15s, box-shadow 0.15s;
}
.cat-card:hover {
  border-color: var(--c-secondary);
  box-shadow: 0 2px 10px rgba(44, 111, 173, 0.14);
}
.cat-card.is-selected {
  border-color: var(--c-secondary);
  background: #f5f9fe;
}

.cat-label {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 13px 16px;
  cursor: pointer;
  user-select: none;
  width: 100%;
}
.cat-name {
  flex: 1;
  font-size: 13px;
  line-height: 1.4;
}
.cat-badge {
  font-size: 11px;
  font-weight: 600;
  padding: 2px 9px;
  border-radius: 12px;
  background: var(--c-accent);
  color: var(--c-muted);
  min-width: 30px;
  text-align: center;
  flex-shrink: 0;
  transition: background 0.15s, color 0.15s;
}
.cat-badge.active {
  background: var(--c-secondary);
  color: var(--c-white);
}

/* ── Loading / error ─────────────────────────────────────────────────────────── */
.state-center {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 70px 20px;
  gap: 18px;
  color: var(--c-muted);
  font-size: 15px;
}
.spinner {
  width: 42px;
  height: 42px;
  border: 3px solid var(--c-border);
  border-top-color: var(--c-secondary);
  border-radius: 50%;
  animation: spin 0.75s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

.error-msg { color: var(--c-error); text-align: center; }

/* ── Bottom bar ──────────────────────────────────────────────────────────────── */
.bottom-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: var(--bar-h);
  background: var(--c-white);
  border-top: 2px solid var(--c-border);
  z-index: 100;
  box-shadow: 0 -4px 16px rgba(0, 0, 0, 0.08);
}
.bottom-inner {
  max-width: 1440px;
  margin: 0 auto;
  padding: 0 28px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.counter {
  display: flex;
  align-items: baseline;
  gap: 8px;
}
.counter-num {
  font-size: 30px;
  font-weight: 800;
  color: var(--c-secondary);
  line-height: 1;
  min-width: 2ch;
  text-align: right;
  transition: color 0.2s;
}
.counter-lbl {
  font-size: 14px;
  color: var(--c-muted);
}

/* ── Buttons ─────────────────────────────────────────────────────────────────── */
.btn-primary {
  background: var(--c-secondary);
  color: var(--c-white);
  border: none;
  border-radius: var(--radius);
  padding: 11px 28px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  font-family: var(--font);
  transition: background 0.15s, transform 0.1s, box-shadow 0.15s;
  white-space: nowrap;
}
.btn-primary:hover:not(:disabled) {
  background: var(--c-primary);
  transform: translateY(-1px);
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.2);
}
.btn-primary:disabled {
  opacity: 0.42;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

.btn-secondary {
  background: transparent;
  color: var(--c-secondary);
  border: 1px solid var(--c-secondary);
  border-radius: var(--radius);
  padding: 7px 16px;
  font-size: 13px;
  cursor: pointer;
  font-family: var(--font);
  transition: background 0.15s;
}
.btn-secondary:hover { background: var(--c-accent); }

.btn-link {
  background: none;
  border: none;
  color: var(--c-secondary);
  font-size: inherit;
  cursor: pointer;
  font-family: var(--font);
  padding: 0;
  text-decoration: underline;
}
.btn-link:hover { color: var(--c-primary); }

/* ── Toast ───────────────────────────────────────────────────────────────────── */
.toast {
  position: fixed;
  bottom: calc(var(--bar-h) + 16px);
  left: 50%;
  transform: translateX(-50%);
  padding: 11px 22px;
  border-radius: var(--radius);
  font-size: 14px;
  font-weight: 500;
  z-index: 200;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.18);
  animation: fadeup 0.25s ease;
  white-space: nowrap;
}
.toast-ok    { background: var(--c-success); color: #fff; }
.toast-err   { background: var(--c-error);   color: #fff; }
@keyframes fadeup {
  from { opacity: 0; transform: translateX(-50%) translateY(8px); }
  to   { opacity: 1; transform: translateX(-50%) translateY(0); }
}

/* ── Scrollbar ───────────────────────────────────────────────────────────────── */
.scrollable::-webkit-scrollbar       { width: 5px; }
.scrollable::-webkit-scrollbar-track { background: var(--c-accent); border-radius: 3px; }
.scrollable::-webkit-scrollbar-thumb { background: var(--c-border); border-radius: 3px; }
.scrollable::-webkit-scrollbar-thumb:hover { background: var(--c-muted); }

/* ── Navigation (Premium Redesign) ────────────────────────────────────────── */
.header-nav {
  display: flex;
  background: rgba(255, 255, 255, 0.08);
  padding: 4px;
  border-radius: 10px;
  border: 1px solid rgba(255, 255, 255, 0.15);
  margin-left: 20px;
}
.nav-btn {
  background: transparent;
  color: rgba(255, 255, 255, 0.7);
  border: none;
  padding: 8px 18px;
  border-radius: 7px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  font-family: var(--font);
  display: flex;
  align-items: center;
  gap: 8px;
}
.nav-btn:hover {
  color: var(--c-white);
  background: rgba(255, 255, 255, 0.05);
}
.nav-btn.active {
  background: var(--c-white);
  color: var(--c-primary);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}
.nav-btn i { font-size: 14px; }

/* ── Management & Search ─────────────────────────────────────────────────────── */
.main.full-width {
  flex: 1;
  max-width: 100%;
}

.search-bar {
  display: flex;
  gap: 12px;
  margin-bottom: 24px;
  background: var(--c-white);
  padding: 16px;
  border-radius: var(--radius);
  border: 1px solid var(--c-border);
  box-shadow: var(--shadow);
}
.search-bar input {
  flex: 1;
  padding: 10px 14px;
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  font-family: var(--font);
  font-size: 14px;
}
.search-bar input:focus {
  outline: none;
  border-color: var(--c-secondary);
  box-shadow: 0 0 0 3px rgba(44, 111, 173, 0.1);
}

.table-container {
  background: var(--c-white);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow-x: auto;
}
.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13.5px;
}
.data-table th, .data-table td {
  padding: 14px 20px;
  text-align: left;
  border-bottom: 1px solid #edf2f7;
}
.data-table th {
  background: #f8fafc;
  font-weight: 600;
  color: var(--c-muted);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.data-table tr:hover { background: #f9fbfe; }

.norm-title { font-weight: 600; color: var(--c-primary); margin-bottom: 4px; display: block; }
.norm-code { font-size: 11.5px; color: var(--c-muted); font-family: monospace; }
.norm-cat { font-size: 11.5px; display: flex; flex-direction: column; gap: 2px; }
.norm-cat span { 
  display: inline-block; 
  background: var(--c-accent); 
  padding: 2px 6px; 
  border-radius: 4px;
  color: var(--c-secondary);
  width: fit-content;
}

.actions { display: flex; gap: 8px; }
.btn-icon {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--c-border);
  border-radius: 4px;
  background: var(--c-white);
  cursor: pointer;
  transition: all 0.15s;
  font-size: 16px;
}
.btn-icon.view { text-decoration: none; color: var(--c-muted); }
.btn-icon.view:hover { color: var(--c-success); border-color: var(--c-success); background: #f0fdf4; }
.btn-icon.edit:hover { color: var(--c-secondary); border-color: var(--c-secondary); background: var(--c-accent); }
.btn-icon.delete:hover { color: var(--c-error); border-color: var(--c-error); background: #fff5f5; }

/* ── Modal ───────────────────────────────────────────────────────────────────── */
.modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(15, 37, 64, 0.45);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 500;
  backdrop-filter: blur(2px);
}
.modal-content {
  background: var(--c-white);
  width: 100%;
  max-width: 680px;
  border-radius: 10px;
  box-shadow: 0 10px 40px rgba(0,0,0,0.25);
  animation: modalIn 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}
@keyframes modalIn {
  from { opacity: 0; transform: scale(0.95) translateY(10px); }
  to { opacity: 1; transform: scale(1) translateY(0); }
}

.modal-header {
  padding: 20px 24px;
  border-bottom: 1px solid #edf2f7;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.modal-header h2 { font-size: 18px; color: var(--c-primary); }
.close-btn { background: none; border: none; font-size: 28px; color: var(--c-muted); cursor: pointer; }

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  padding: 24px;
}
.form-group { display: flex; flex-direction: column; gap: 6px; }
.form-group.span-2 { grid-column: span 2; }
.form-group label { font-size: 12px; font-weight: 600; color: var(--c-muted); }
.form-group input, .form-group textarea {
  padding: 10px 14px;
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  font-family: var(--font);
  font-size: 14px;
}
.form-group textarea { resize: vertical; }

.modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: 12px;
  margin-top: 8px;
  padding-top: 16px;
  border-top: 1px solid #edf2f7;
}

/* ── Responsive ──────────────────────────────────────────────────────────────── */
@media (max-width: 800px) {
  .layout  { flex-direction: column; padding: 16px 16px calc(var(--bar-h) + 16px); }
  .sidebar { width: 100%; }
  .cat-grid { grid-template-columns: 1fr; }
  .header-inner { flex-direction: column; height: auto; padding: 16px 20px; }
  .header-nav { width: 100%; justify-content: center; }
  .header-tag { display: none; }
  .counter-num { font-size: 24px; }
  .form-grid { grid-template-columns: 1fr; }
  .form-group.span-2 { grid-column: auto; }
}