:root {
  --bg: #0b1020;
  --panel: #0f1730;
  --card: #121b38;
  --muted: #9aa7c7;
  --text: #e8eeff;
  --line: rgba(255, 255, 255, .08);
  --good: #25d366;
  --bad: #ff4d4d;
  --warn: #f5c542;
  --accent: #5664ff;
  --accent-glow: rgba(86, 100, 255, 0.25);
  --soft: rgba(255, 255, 255, .08);
  --shadow: 0 10px 30px rgba(0, 0, 0, .35);
  --radius: 16px;
  --radius2: 22px;
  --mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  --sans: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji";
  --transition: all 0.2s ease;
}

/* Reset và cơ sở */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html, body {
  height: 100%;
  overflow-x: hidden;
}

body {
  font-family: var(--sans);
  color: var(--text);
  background: 
    radial-gradient(1200px 700px at 10% -10%, rgba(86, 100, 255, .25), transparent 60%),
    radial-gradient(900px 500px at 90% 0%, rgba(48, 208, 255, .18), transparent 55%),
    var(--bg);
  line-height: 1.6;
  display: flex;
  flex-direction: column;
}

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

a:hover {
  color: var(--accent);
}


/* Helpers */
.hidden { display: none !important; }
:focus-visible { outline: 2px solid rgba(86, 100, 255, .7); outline-offset: 2px; }
@media (prefers-reduced-motion: reduce) {
  * { animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; scroll-behavior: auto !important; }
}

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

/* Sidebar */
.sidebar {
  width: 280px;
  background: linear-gradient(180deg, rgba(255, 255, 255, .04), transparent 40%), var(--panel);
  border-right: 1px solid var(--line);
  padding: 20px;
  position: sticky;
  top: 0;
  height: 100vh;
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  backdrop-filter: blur(10px);
  z-index: 100;
}

.sidebar.collapsed {
  width: 86px;
}

.brand {
  display: flex;
  gap: 14px;
  align-items: center;
  padding: 10px 0 24px;
  margin-bottom: 10px;
  border-bottom: 1px solid var(--line);
}

.logo {
  width: 48px;
  height: 48px;
  border-radius: 14px;
  background: linear-gradient(135deg, rgba(86, 100, 255, .95), rgba(48, 208, 255, .85));
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  letter-spacing: .5px;
  box-shadow: 0 0 20px var(--accent-glow);
  font-size: 20px;
  flex-shrink: 0;
}

.brand-text {
  line-height: 1.3;
}

.brand-name {
  font-weight: 800;
  font-size: 18px;
  background: linear-gradient(to right, #fff, #a0b1ff);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.brand-sub {
  font-size: 12px;
  color: var(--muted);
  margin-top: 4px;
}

.sidebar.collapsed .brand-text {
  display: none;
}

/* Navigation */
.nav {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: 10px;
  flex: 1;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  border-radius: 14px;
  color: rgba(232, 238, 255, .92);
  border: 1px solid transparent;
  transition: var(--transition);
  font-weight: 500;
}

.nav-item:hover {
  background: rgba(255, 255, 255, .06);
  border-color: rgba(255, 255, 255, .08);
  transform: translateX(4px);
}

.nav-item.active {
  background: rgba(86, 100, 255, .2);
  border-color: rgba(86, 100, 255, .3);
  box-shadow: 0 4px 12px rgba(86, 100, 255, .15);
}

.nav-ico {
  width: 24px;
  text-align: center;
  font-size: 18px;
}

.sidebar.collapsed .nav-item span:not(.nav-ico) {
  display: none;
}

/* Footer sidebar */
.sidebar-foot {
  margin-top: auto;
  padding: 20px 0 0;
  border-top: 1px solid var(--line);
}

.pill {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 12px 16px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, .04);
  transition: var(--transition);
}

.pill:hover {
  background: rgba(255, 255, 255, .07);
  border-color: rgba(255, 255, 255, .12);
}

.dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--warn);
  box-shadow: 0 0 0 4px rgba(245, 197, 66, .16);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(245, 197, 66, 0.4); }
  70% { box-shadow: 0 0 0 8px rgba(245, 197, 66, 0); }
  100% { box-shadow: 0 0 0 0 rgba(245, 197, 66, 0); }
}

/* Phần nội dung chính */
.main {
  flex: 1;
  padding: 24px 28px;
  display: flex;
  flex-direction: column;
  width: 100%;
  max-width: 1400px;
  margin: 0 auto;
}

/* Topbar */
.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  padding: 18px 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius2);
  background: rgba(15, 23, 48, 0.7);
  backdrop-filter: blur(10px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, .2);
  margin-bottom: 24px;
}

.top-left {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.page-title {
  font-weight: 800;
  font-size: 24px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.page-sub {
  font-size: 14px;
  color: var(--muted);
}

.top-right {
  display: flex;
  align-items: center;
  gap: 16px;
}

.kpi {
  padding: 12px 16px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: rgba(255, 255, 255, .03);
  min-width: 140px;
  text-align: center;
  transition: var(--transition);
}

.kpi:hover {
  background: rgba(255, 255, 255, .05);
  transform: translateY(-2px);
}

.kpi-label {
  font-size: 12px;
  color: var(--muted);
  margin-bottom: 6px;
}

.kpi-val {
  font-weight: 800;
  font-size: 20px;
}

/* Nút */
.icon-btn {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, .03);
  color: var(--text);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}

.icon-btn:hover {
  background: rgba(255, 255, 255, .08);
  transform: translateY(-2px);
}

.btn {
  padding: 12px 20px;
  border-radius: 14px;
  border: 1px solid rgba(86, 100, 255, .35);
  background: rgba(86, 100, 255, .25);
  color: var(--text);
  cursor: pointer;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: var(--transition);
}

.btn:hover {
  background: rgba(86, 100, 255, .35);
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(86, 100, 255, .2);
}

.btn.secondary {
  border-color: var(--line);
  background: rgba(255, 255, 255, .05);
}

.btn.secondary:hover {
  background: rgba(255, 255, 255, .1);
}

.btn.danger {
  border-color: rgba(255, 77, 77, .35);
  background: rgba(255, 77, 77, .2);
}

.btn.danger:hover {
  background: rgba(255, 77, 77, .3);
}

/* Nội dung */
.content {
  flex: 1;
  display: flex;
  flex-direction: column;
}

.page {
  animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: none; }
}

/* Grid và Card */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 20px;
  margin-bottom: 24px;
}

.card {
  border: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(255, 255, 255, .05), rgba(255, 255, 255, .02));
  border-radius: var(--radius2);
  box-shadow: 0 12px 28px rgba(0, 0, 0, .2);
  overflow: hidden;
  transition: var(--transition);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 16px 32px rgba(0, 0, 0, .25);
}

.card.span-2 {
  grid-column: span 2;
}

.card-h {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 20px;
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, .02);
}

.card-title {
  font-weight: 800;
  font-size: 18px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.card-b {
  padding: 20px;
}

.card-b.p0 {
  padding: 0;
}

/* Các thành phần khác */
.row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
  padding: 12px 0;
  border-bottom: 1px dashed rgba(255, 255, 255, .08);
}

.row:last-child {
  border-bottom: none;
}

.label {
  color: var(--muted);
  font-size: 14px;
}

.value {
  font-weight: 700;
  font-size: 16px;
}

.mono {
  font-family: var(--mono);
  font-size: 13px;
}

.badge {
  padding: 6px 12px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 700;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, .04);
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.badge.good {
  border-color: rgba(37, 211, 102, .35);
  background: rgba(37, 211, 102, .16);
}

.badge.bad {
  border-color: rgba(255, 77, 77, .35);
  background: rgba(255, 77, 77, .16);
}

.badge.soft {
  background: rgba(255, 255, 255, .03);
}

.hint {
  margin-top: 12px;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.5;
}

.hr {
  height: 1px;
  background: var(--line);
  margin: 18px 0;
}

.kpi-row {
  display: flex;
  gap: 16px;
  margin-top: 8px;
}

.kpi-box {
  flex: 1;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: rgba(255, 255, 255, .02);
  text-align: center;
  transition: var(--transition);
}

.kpi-box:hover {
  background: rgba(255, 255, 255, .04);
  transform: translateY(-2px);
}

.kpi-box-label {
  font-size: 12px;
  color: var(--muted);
  margin-bottom: 8px;
}

.kpi-box-val {
  font-weight: 900;
  font-size: 24px;
}

.actions {
  display: flex;
  gap: 12px;
  margin-top: 16px;
  flex-wrap: wrap;
  justify-content: center;
}

/* Log */
.log {
  font-family: var(--mono);
  font-size: 13px;
  line-height: 1.6;
  color: rgba(232, 238, 255, .9);
  min-height: 160px;
  max-height: 260px;
  overflow: auto;
  padding: 16px;
  background: rgba(0, 0, 0, .2);
  border-radius: 12px;
}

.log .line {
  padding: 4px 0;
  border-bottom: 1px dashed rgba(255, 255, 255, .06);
}

.log .line:last-child {
  border-bottom: none;
}

.log .t {
  color: rgba(154, 167, 199, .95);
}

/* Toolbar */
.toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}

.search {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: rgba(255, 255, 255, .04);
  flex: 1;
  min-width: 300px;
  max-width: 600px;
  transition: var(--transition);
}

.search:focus-within {
  border-color: var(--accent);
  box-shadow: 0 0 0 2px var(--accent-glow);
}

.search input {
  flex: 1;
  border: none;
  outline: none;
  background: transparent;
  color: var(--text);
  font-size: 15px;
}

.toolbar-right {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

/* Table */
.table-container {
  overflow-x: auto;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, .02);
  margin-bottom: 24px;
}

.table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
}

.table thead th {
  text-align: left;
  font-size: 13px;
  color: var(--muted);
  padding: 16px 20px;
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, .03);
  font-weight: 700;
}

.table tbody td {
  padding: 16px 20px;
  border-bottom: 1px solid rgba(255, 255, 255, .06);
}

.table tbody tr:hover {
  background: rgba(255, 255, 255, .04);
}

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

.table .right {
  text-align: right;
}

.empty {
  padding: 40px 20px;
  color: var(--muted);
  text-align: center;
  font-size: 15px;
}

/* Switch */
.switch {
  position: relative;
  width: 52px;
  height: 28px;
  border-radius: 999px;
  background: rgba(255, 255, 255, .12);
  border: 1px solid rgba(255, 255, 255, .12);
  cursor: pointer;
  transition: var(--transition);
}

.switch::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 4px;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: rgba(255, 255, 255, .92);
  transform: translateY(-50%);
  transition: var(--transition);
}

.switch.on {
  background: rgba(37, 211, 102, .3);
  border-color: rgba(37, 211, 102, .3);
}

.switch.on::after {
  left: 26px;
}

.tag {
  font-size: 12px;
  color: var(--muted);
  padding: 4px 8px;
  border-radius: 6px;
  background: rgba(255, 255, 255, .03);
}

.btn-mini {
  padding: 8px 12px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, .03);
  cursor: pointer;
  font-weight: 700;
  font-size: 13px;
  transition: var(--transition);
}

.btn-mini:hover {
  background: rgba(255, 255, 255, .08);
}

/* Modal */
.modal {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  z-index: 1000;
  backdrop-filter: blur(5px);
}

.modal.hidden {
  display: none;
}

.modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, .7);
}

.modal-card {
  position: relative;
  width: min(920px, 100%);
  max-height: min(86vh, 920px);
  overflow: auto;
  border-radius: 24px;
  border: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(255, 255, 255, .06), rgba(255, 255, 255, .02));
  box-shadow: 0 20px 60px rgba(0, 0, 0, .4);
  z-index: 1;
}

.modal-h {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 20px 24px;
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, .03);
}

.modal-title {
  font-weight: 900;
  font-size: 20px;
}

.modal-sub {
  font-size: 13px;
  color: var(--muted);
  margin-top: 4px;
}

.modal-b {
  padding: 24px;
}

.modal-toolbar {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 16px;
  justify-content: center;
}

/* Feature grid */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 16px;
  margin-top: 16px;
}

.feature {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: rgba(255, 255, 255, .02);
  transition: var(--transition);
}

.feature:hover {
  background: rgba(255, 255, 255, .04);
  transform: translateY(-2px);
}

.feature .name {
  font-weight: 800;
  font-size: 16px;
}

.feature .key {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--muted);
  margin-top: 6px;
}

.feature .meta {
  display: flex;
  flex-direction: column;
}

/* Tabs */
.tabs {
  display: flex;
  gap: 12px;
  margin-bottom: 20px;
  flex-wrap: wrap;
  justify-content: center;
}

.tab {
  padding: 12px 20px;
  border-radius: 14px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, .03);
  cursor: pointer;
  font-weight: 700;
  transition: var(--transition);
}

.tab:hover {
  background: rgba(255, 255, 255, .06);
}

.tab.active {
  border-color: rgba(86, 100, 255, .35);
  background: rgba(86, 100, 255, .2);
  box-shadow: 0 4px 12px rgba(86, 100, 255, .15);
}

.tab-panels {
  margin-top: 8px;
}

/* Form */
.form {
  max-width: 800px;
  margin: 0 auto;
}

.form label {
  display: block;
  font-weight: 700;
  margin: 16px 0 8px;
  font-size: 15px;
}

.form textarea,
.form input,
.form select {
  width: 100%;
  padding: 14px 16px;
  border-radius: 14px;
  border: 1px solid var(--line);
  background: rgba(0, 0, 0, .15);
  color: var(--text);
  outline: none;
  font-size: 15px;
  transition: var(--transition);
}

.form textarea:focus,
.form input:focus,
.form select:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 2px var(--accent-glow);
}

.form textarea {
  resize: vertical;
  min-height: 120px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: 20px;
  margin-top: 16px;
}

/* Listbox */
.listbox {
  border: 1px solid var(--line);
  border-radius: 18px;
  overflow: hidden;
  max-height: 320px;
  overflow: auto;
  background: rgba(0, 0, 0, .1);
}

.itemrow {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 18px;
  border-bottom: 1px dashed rgba(255, 255, 255, .06);
  transition: var(--transition);
}

.itemrow:hover {
  background: rgba(255, 255, 255, .04);
}

.itemrow:last-child {
  border-bottom: none;
}

.ck {
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.ck input {
  margin-top: 4px;
}

.itemmeta .name {
  font-weight: 700;
  font-size: 15px;
}

.itemmeta .sub {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--muted);
  margin-top: 4px;
}

/* Toast */
.toast {
  position: fixed;
  right: 20px;
  bottom: 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  z-index: 2000;
  max-width: 400px;
}

.toast .item {
  width: 100%;
  border: 1px solid var(--line);
  background: rgba(15, 23, 48, .95);
  border-radius: 18px;
  padding: 16px 20px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, .4);
  backdrop-filter: blur(10px);
  animation: slideIn 0.3s ease;
  transition: var(--transition);
}

@keyframes slideIn {
  from { transform: translateX(100%); opacity: 0; }
  to { transform: none; opacity: 1; }
}

.toast .t {
  margin: 0;
  font-weight: 800;
  font-size: 16px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.toast .m {
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.5;
}

/* Tiện ích */
.text-center {
  text-align: center;
}

.flex-center {
  display: flex;
  align-items: center;
  justify-content: center;
}

.flex-between {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.flex-column {
  display: flex;
  flex-direction: column;
}

.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; }
.mx-auto { margin-left: auto; margin-right: auto; }
.p-1 { padding: 8px; }
.p-2 { padding: 16px; }
.p-3 { padding: 24px; }

.w-full { width: 100%; }
.h-full { height: 100%; }

/* Responsive */
@media (max-width: 1200px) {
  .grid {
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  }
  
  .card.span-2 {
    grid-column: span 1;
  }
}

@media (max-width: 992px) {
  .sidebar {
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    transform: translateX(0);
    transition: transform 0.3s ease;
  }
  
  body.sidebar-hidden .sidebar {
    transform: translateX(-100%);
  }
  
  .main {
    padding-left: 20px;
    padding-right: 20px;
  }
  
  .form-row {
    grid-template-columns: 1fr;
  }
  
  .feature-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .grid {
    grid-template-columns: 1fr;
  }
  
  .topbar {
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
  }
  
  .top-right {
    width: 100%;
    justify-content: space-between;
  }
  
  .kpi {
    min-width: calc(50% - 8px);
  }
  
  .toolbar {
    flex-direction: column;
    align-items: flex-start;
  }
  
  .search {
    min-width: 100%;
  }
  
  .toolbar-right {
    width: 100%;
    justify-content: space-between;
  }
  
  .table-container {
    font-size: 14px;
  }
  
  .table thead th,
  .table tbody td {
    padding: 12px 16px;
  }
}

@media (max-width: 576px) {
  .modal-card {
    border-radius: 18px;
  }
  
  .modal-b {
    padding: 16px;
  }
  
  .modal-h {
    padding: 16px 20px;
  }
  
  .btn {
    padding: 10px 16px;
    font-size: 14px;
  }
  
  .kpi-box-val {
    font-size: 20px;
  }
  
  .kpi-val {
    font-size: 18px;
  }
  
  .page-title {
    font-size: 20px;
  }
}