/* ===== Treepy Admin - Minimal Design System ===== */
/* Inspired by giampa.site - Dark-first, Monospace */

:root {
  --bg: #000000;
  --fg: #ffffff;
  --muted: #bdbdbd;
  --border: #161616;
  --hover: #111111;
  --sidebar-bg: #0a0a0a;
  --success: #10b981;
  --error: #ef4444;
  --warning: #f59e0b;
  --info: #3b82f6;
  --sidebar-width: 220px;
}

[data-theme="light"] {
  --bg: #ffffff;
  --fg: #000000;
  --muted: #555555;
  --border: #e5e5e5;
  --hover: #f5f5f5;
  --sidebar-bg: #fafafa;
}

/* ===== Base ===== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'JetBrains Mono', monospace;
  background: var(--bg);
  color: var(--fg);
  line-height: 1.55;
  letter-spacing: 0.1px;
  min-height: 100vh;
}

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

a:hover {
  opacity: 0.8;
}

/* ===== Pages ===== */
.page {
  display: none;
}

.page.active {
  display: flex;
}

/* ===== Login ===== */
#login-page {
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  background: var(--bg);
}

.login-container {
  background: var(--bg);
  border: 1px solid var(--border);
  padding: 2rem;
  border-radius: 8px;
  width: 100%;
  max-width: 380px;
}

.login-header {
  text-align: center;
  margin-bottom: 1.5rem;
}

.login-header h1 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.login-header p {
  color: var(--muted);
  font-size: 0.875rem;
}

.login-form .form-group {
  margin-bottom: 1rem;
}

.login-form label {
  display: block;
  margin-bottom: 0.4rem;
  font-weight: 500;
  font-size: 0.875rem;
}

.login-form input {
  width: 100%;
  padding: 0.75rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg);
  color: var(--fg);
  font-family: inherit;
  font-size: 0.9375rem;
}

.login-form input:focus {
  outline: none;
  border-color: var(--fg);
}

.error-message {
  color: var(--error);
  font-size: 0.8125rem;
  margin-bottom: 1rem;
  display: none;
}

.error-message.show {
  display: block;
}

/* ===== Buttons ===== */
.btn {
  padding: 0.75rem 1.25rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-family: inherit;
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s;
}

.btn-primary {
  background: var(--fg);
  color: var(--bg);
  border-color: var(--fg);
  width: 100%;
  font-weight: 700;
}

.btn-primary:hover {
  opacity: 0.8;
}

.btn-outline {
  background: transparent;
  color: var(--fg);
}

.btn-outline:hover {
  background: var(--hover);
}

.btn-sm {
  padding: 0.4rem 0.75rem;
  font-size: 0.8125rem;
}

.btn-success {
  background: var(--success);
  color: #000;
  border-color: var(--success);
}

.btn-danger {
  background: var(--error);
  color: #fff;
  border-color: var(--error);
}

/* ===== App Layout ===== */
#app {
  display: flex;
  min-height: 100vh;
}

/* ===== Sidebar ===== */
.sidebar {
  width: var(--sidebar-width);
  background: var(--sidebar-bg);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  position: fixed;
  height: 100vh;
}

.sidebar-header {
  padding: 1.25rem 1rem;
  border-bottom: 1px solid var(--border);
}

.sidebar-header h2 {
  font-size: 0.9375rem;
  font-weight: 700;
}

.sidebar-nav {
  flex: 1;
  padding: 0.75rem 0;
  overflow-y: auto;
}

.nav-item {
  display: flex;
  align-items: center;
  padding: 0.6rem 1rem;
  color: var(--muted);
  font-size: 0.8125rem;
  transition: all 0.2s;
}

.nav-item:hover {
  background: var(--hover);
  color: var(--fg);
}

.nav-item.active {
  background: var(--fg);
  color: var(--bg);
}

.nav-item.hidden {
  display: none;
}

.nav-icon {
  margin-right: 0.6rem;
  font-size: 1rem;
  width: 20px;
  text-align: center;
}

.sidebar-footer {
  padding: 1rem;
  border-top: 1px solid var(--border);
}

.admin-info {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.5rem;
  font-size: 0.8125rem;
}

.role-badge {
  background: var(--hover);
  border: 1px solid var(--border);
  padding: 0.15rem 0.4rem;
  border-radius: 4px;
  font-size: 0.6875rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* ===== Main Content ===== */
.main-content {
  flex: 1;
  margin-left: var(--sidebar-width);
  display: flex;
  flex-direction: column;
}

.main-header {
  background: var(--bg);
  padding: 1rem 1.5rem;
  border-bottom: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.main-header h1 {
  font-size: 1rem;
  font-weight: 700;
}

.header-actions {
  color: var(--muted);
  font-size: 0.8125rem;
}

.content {
  flex: 1;
  padding: 1.5rem;
}

/* ===== Sections ===== */
.section {
  display: none;
}

.section.active {
  display: block;
}

.section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.25rem;
}

/* ===== Stats Grid ===== */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.stat-card {
  background: var(--bg);
  border: 1px solid var(--border);
  padding: 1.25rem;
  border-radius: 8px;
  text-align: center;
}

.stat-value {
  font-size: 2rem;
  font-weight: 700;
}

.stat-label {
  color: var(--muted);
  font-size: 0.75rem;
  margin-top: 0.25rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.stat-card.stat-pending .stat-value { color: var(--warning); }
.stat-card.stat-active .stat-value { color: var(--info); }
.stat-card.stat-success .stat-value { color: var(--success); }

/* ===== Tables ===== */
.table-container {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.8125rem;
}

.data-table th,
.data-table td {
  padding: 0.75rem 1rem;
  text-align: left;
  border-bottom: 1px solid var(--border);
}

.data-table th {
  background: var(--hover);
  font-weight: 600;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--muted);
}

.data-table tbody tr:hover {
  background: var(--hover);
}

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

.data-table .actions {
  display: flex;
  gap: 0.4rem;
}

/* ===== Badges ===== */
.badge {
  display: inline-block;
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
  font-size: 0.6875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.3px;
}

.badge-success {
  background: rgba(16, 185, 129, 0.15);
  color: var(--success);
}

.badge-warning {
  background: rgba(245, 158, 11, 0.15);
  color: var(--warning);
}

.badge-danger {
  background: rgba(239, 68, 68, 0.15);
  color: var(--error);
}

.badge-info {
  background: rgba(59, 130, 246, 0.15);
  color: var(--info);
}

/* ===== Search ===== */
.search-input {
  padding: 0.5rem 0.75rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg);
  color: var(--fg);
  font-family: inherit;
  font-size: 0.8125rem;
  width: 250px;
}

.search-input:focus {
  outline: none;
  border-color: var(--fg);
}

/* ===== Settings ===== */
.settings-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
}

.setting-card {
  background: var(--bg);
  border: 1px solid var(--border);
  padding: 1.25rem;
  border-radius: 8px;
}

.setting-card h4 {
  font-size: 0.875rem;
  margin-bottom: 0.4rem;
}

.setting-card p {
  font-size: 0.75rem;
  color: var(--muted);
  margin-bottom: 0.75rem;
}

.setting-card input {
  width: 100%;
  padding: 0.5rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--bg);
  color: var(--fg);
  font-family: inherit;
  font-size: 0.8125rem;
  margin-bottom: 0.5rem;
}

.setting-card input:focus {
  outline: none;
  border-color: var(--fg);
}

/* ===== Modal ===== */
.modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.8);
  justify-content: center;
  align-items: center;
  z-index: 1000;
}

.modal.show {
  display: flex;
}

.modal-content {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  width: 100%;
  max-width: 450px;
  max-height: 90vh;
  overflow: auto;
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--border);
}

.modal-header h3 {
  font-size: 1rem;
  font-weight: 700;
}

.modal-close {
  background: none;
  border: none;
  font-size: 1.25rem;
  cursor: pointer;
  color: var(--muted);
}

.modal-close:hover {
  color: var(--fg);
}

.modal-body {
  padding: 1.25rem;
}

.modal-body .form-group {
  margin-bottom: 1rem;
}

.modal-body label {
  display: block;
  margin-bottom: 0.4rem;
  font-weight: 500;
  font-size: 0.8125rem;
}

.modal-body input,
.modal-body select {
  width: 100%;
  padding: 0.5rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--bg);
  color: var(--fg);
  font-family: inherit;
  font-size: 0.8125rem;
}

.modal-body input:focus,
.modal-body select:focus {
  outline: none;
  border-color: var(--fg);
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .settings-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .sidebar {
    width: 60px;
  }

  .sidebar-header h2,
  .nav-item span:not(.nav-icon),
  .admin-info,
  .sidebar-footer .btn {
    display: none;
  }

  .nav-item {
    justify-content: center;
    padding: 0.75rem;
  }

  .nav-icon {
    margin-right: 0;
  }

  .main-content {
    margin-left: 60px;
  }

  .stats-grid {
    grid-template-columns: 1fr;
  }

  .main-header h1 {
    font-size: 0.875rem;
  }
}

/* ===== Routing Configuration ===== */
.routing-config {
  max-width: 800px;
}

.routing-category {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1.25rem;
  margin-bottom: 1.5rem;
}

.routing-category h3 {
  font-size: 0.9375rem;
  font-weight: 700;
  margin-bottom: 1rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--border);
}

.routing-params {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
}

.routing-param {
  padding: 0.75rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--hover);
}

.routing-param.weight-param {
  grid-column: span 2;
}

.param-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.5rem;
}

.param-header label {
  font-size: 0.8125rem;
  font-weight: 500;
}

.help-btn {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  border: 1px solid var(--muted);
  background: transparent;
  color: var(--muted);
  font-size: 0.75rem;
  font-weight: 700;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s;
}

.help-btn:hover {
  border-color: var(--fg);
  color: var(--fg);
}

.routing-param input[type="number"] {
  width: 100%;
  padding: 0.5rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--bg);
  color: var(--fg);
  font-family: inherit;
  font-size: 0.8125rem;
}

.routing-param input[type="number"]:focus {
  outline: none;
  border-color: var(--fg);
}

/* Toggle Switch */
.toggle {
  position: relative;
  display: inline-block;
  width: 48px;
  height: 26px;
}

.toggle input {
  opacity: 0;
  width: 0;
  height: 0;
}

.toggle-slider {
  position: absolute;
  cursor: pointer;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: var(--border);
  transition: 0.3s;
  border-radius: 26px;
}

.toggle-slider:before {
  position: absolute;
  content: "";
  height: 20px;
  width: 20px;
  left: 3px;
  bottom: 3px;
  background-color: var(--fg);
  transition: 0.3s;
  border-radius: 50%;
}

.toggle input:checked + .toggle-slider {
  background-color: var(--success);
}

.toggle input:checked + .toggle-slider:before {
  transform: translateX(22px);
}

/* Weight Input */
.weight-input {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.weight-input input[type="number"] {
  width: 80px;
  flex-shrink: 0;
}

.weight-bar {
  flex: 1;
  height: 8px;
  background: var(--border);
  border-radius: 4px;
  overflow: hidden;
}

.weight-bar-fill {
  height: 100%;
  background: var(--info);
  border-radius: 4px;
  transition: width 0.3s;
}

.weight-pct {
  width: 40px;
  text-align: right;
  font-size: 0.75rem;
  color: var(--muted);
}

/* Weights Header */
.weights-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.75rem;
  font-size: 0.8125rem;
  color: var(--muted);
}

.weights-sum {
  padding: 0.25rem 0.5rem;
  border-radius: 4px;
  font-weight: 600;
}

.weights-sum.valid {
  background: rgba(16, 185, 129, 0.15);
  color: var(--success);
}

.weights-sum.invalid {
  background: rgba(239, 68, 68, 0.15);
  color: var(--error);
}

.weights-warning {
  background: rgba(245, 158, 11, 0.1);
  border: 1px solid var(--warning);
  color: var(--warning);
  padding: 0.5rem 0.75rem;
  border-radius: 6px;
  font-size: 0.8125rem;
  margin-bottom: 1rem;
}

.weights-warning.hidden {
  display: none;
}

/* Routing Actions */
.routing-actions {
  display: flex;
  justify-content: flex-end;
  gap: 0.75rem;
  padding-top: 1rem;
}

.routing-actions .btn {
  width: auto;
}

.routing-actions .btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* Routing Help Modal */
.routing-help {
  font-size: 0.875rem;
}

.routing-help .help-section {
  margin-bottom: 1rem;
}

.routing-help .help-section h4 {
  font-size: 0.8125rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.routing-help .help-section p {
  line-height: 1.6;
}

.routing-help .help-effects {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.routing-help .effect {
  padding: 0.75rem;
  border-radius: 6px;
  background: var(--hover);
}

.routing-help .effect.low {
  border-left: 3px solid var(--warning);
}

.routing-help .effect.high {
  border-left: 3px solid var(--info);
}

.routing-help .effect strong {
  display: block;
  margin-bottom: 0.25rem;
  font-size: 0.75rem;
}

.routing-help .effect p {
  font-size: 0.8125rem;
  color: var(--muted);
  margin: 0;
}

.routing-help .help-warning {
  background: rgba(245, 158, 11, 0.1);
  border: 1px solid var(--warning);
  color: var(--warning);
  padding: 0.75rem;
  border-radius: 6px;
  margin-bottom: 1rem;
  font-size: 0.8125rem;
}

.routing-help .help-footer {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
}

.routing-help .recommendation,
.routing-help .tradeoff {
  font-size: 0.8125rem;
}

.routing-help .recommendation strong,
.routing-help .tradeoff strong {
  display: block;
  font-size: 0.75rem;
  color: var(--muted);
  margin-bottom: 0.25rem;
}

.routing-help .recommendation {
  color: var(--success);
}

/* Responsive */
@media (max-width: 768px) {
  .routing-params {
    grid-template-columns: 1fr;
  }

  .routing-param.weight-param {
    grid-column: span 1;
  }

  .weight-input {
    flex-wrap: wrap;
  }

  .weight-bar {
    order: 3;
    width: 100%;
    flex: none;
    margin-top: 0.5rem;
  }

  .routing-help .help-effects {
    grid-template-columns: 1fr;
  }

  .routing-help .help-footer {
    grid-template-columns: 1fr;
  }
}