/* ===== Design Tokens (Supabase-inspired, dark default) ===== */
:root, :root[data-theme="dark"] {
  --bg-canvas: #171717;
  --bg-surface: #0f0f0f;
  --bg-elevated: #1f1f1f;
  --bg-overlay: rgba(41, 41, 41, 0.84);
  --bg-hover: rgba(255, 255, 255, 0.04);

  --border-subtle: #242424;
  --border: #2e2e2e;
  --border-strong: #363636;
  --border-stronger: #434343;
  --border-accent: rgba(62, 207, 142, 0.3);

  --text-primary: #fafafa;
  --text-secondary: #b4b4b4;
  --text-muted: #898989;
  --text-dim: #4d4d4d;

  --brand: #3ecf8e;
  --brand-link: #00c573;
  --brand-soft: rgba(62, 207, 142, 0.12);

  --danger: #e5484d;
  --danger-soft: rgba(229, 72, 77, 0.14);
  --warn: #f5a524;
  --warn-soft: rgba(245, 165, 36, 0.14);
  --info: #3ecf8e;

  --btn-primary-bg: var(--text-primary);
  --btn-primary-fg: var(--bg-surface);
  --btn-primary-bg-hover: #ffffff;

  --shadow-focus: 0 0 0 2px var(--bg-canvas), 0 0 0 4px var(--border-accent);
  --shadow-modal: none;
  --iframe-bg: #ffffff;

  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-pill: 9999px;

  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-mono: 'JetBrains Mono', 'SFMono-Regular', Consolas, Menlo, monospace;
}

/* ===== Light Theme Overrides ===== */
:root[data-theme="light"] {
  --bg-canvas: #ffffff;
  --bg-surface: #fafafa;
  --bg-elevated: #f5f5f5;
  --bg-overlay: rgba(255, 255, 255, 0.92);
  --bg-hover: rgba(0, 0, 0, 0.04);

  --border-subtle: #f0f0f0;
  --border: #e5e5e5;
  --border-strong: #d4d4d4;
  --border-stronger: #a3a3a3;
  --border-accent: rgba(0, 169, 112, 0.4);

  --text-primary: #171717;
  --text-secondary: #525252;
  --text-muted: #737373;
  --text-dim: #a3a3a3;

  --brand: #00a970;
  --brand-link: #009960;
  --brand-soft: rgba(0, 169, 112, 0.08);

  --danger: #dc2626;
  --danger-soft: rgba(220, 38, 38, 0.08);
  --warn: #d97706;
  --warn-soft: rgba(217, 119, 6, 0.1);
  --info: #00a970;

  --btn-primary-bg: #171717;
  --btn-primary-fg: #ffffff;
  --btn-primary-bg-hover: #000000;

  --shadow-focus: 0 0 0 2px #ffffff, 0 0 0 4px var(--border-accent);
  --shadow-modal: 0 10px 40px rgba(0, 0, 0, 0.12);
  --iframe-bg: #ffffff;
}

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

body {
  font-family: var(--font-sans);
  font-size: 14px;
  line-height: 1.5;
  color: var(--text-primary);
  background: var(--bg-canvas);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  color: var(--text-primary);
  text-decoration: none;
  transition: color 0.15s ease;
}
a:hover { color: var(--brand-link); }

::placeholder { color: var(--text-dim); }

::selection { background: var(--brand-soft); color: var(--text-primary); }

/* ===== Utility: monospace label ===== */
.label-mono {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 1.2px;
  text-transform: uppercase;
  color: var(--text-muted);
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 8px 20px;
  border-radius: var(--radius-pill);
  font-family: inherit;
  font-size: 13px;
  font-weight: 500;
  line-height: 1.14;
  cursor: pointer;
  border: 1px solid var(--border-strong);
  background: var(--bg-surface);
  color: var(--text-primary);
  transition: border-color 0.15s ease, background 0.15s ease, color 0.15s ease;
  text-decoration: none;
  white-space: nowrap;
}
.btn:hover {
  border-color: var(--text-primary);
  color: var(--text-primary);
}

.btn-primary {
  background: var(--btn-primary-bg);
  color: var(--btn-primary-fg);
  border-color: var(--btn-primary-bg);
}
.btn-primary:hover {
  background: var(--btn-primary-bg-hover);
  border-color: var(--btn-primary-bg-hover);
  color: var(--btn-primary-fg);
  opacity: 0.92;
}

.btn-danger {
  background: var(--bg-surface);
  color: var(--danger);
  border-color: rgba(229, 72, 77, 0.4);
}
.btn-danger:hover {
  background: var(--danger);
  color: #ffffff;
  border-color: var(--danger);
}

.btn-sm {
  padding: 4px 14px;
  font-size: 12px;
}

.btn-text {
  border: 1px solid transparent;
  background: transparent;
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
}
.btn-text:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
  border-color: transparent;
}
.btn-text.btn-danger { color: var(--danger); background: transparent; border-color: transparent; }
.btn-text.btn-danger:hover { background: var(--danger-soft); color: var(--danger); border-color: transparent; }

.btn:focus-visible {
  outline: none;
  box-shadow: var(--shadow-focus);
}

/* ===== Toggle Switch ===== */
.toggle-switch {
  position: relative;
  width: 44px;
  height: 22px;
  flex-shrink: 0;
}
.toggle-switch input { opacity: 0; width: 0; height: 0; }
.toggle-slider {
  position: absolute;
  cursor: pointer;
  top: 0; left: 0; right: 0; bottom: 0;
  background: var(--border-strong);
  transition: 0.25s;
  border-radius: 22px;
  border: 1px solid var(--border);
}
.toggle-slider:before {
  content: "";
  position: absolute;
  height: 16px;
  width: 16px;
  left: 2px;
  bottom: 2px;
  background: var(--text-primary);
  transition: 0.25s;
  border-radius: 50%;
}
.toggle-switch input:checked + .toggle-slider {
  background: var(--brand);
  border-color: var(--brand);
}
.toggle-switch input:checked + .toggle-slider:before {
  transform: translateX(22px);
  background: var(--bg-surface);
}

/* ===== Toast Notification ===== */
.toast-container {
  position: fixed;
  top: 20px;
  right: 20px;
  z-index: 10000;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.toast {
  position: relative;
  padding: 12px 20px 12px 24px;
  border-radius: var(--radius-md);
  font-size: 13px;
  color: var(--text-primary);
  background: var(--bg-surface);
  border: 1px solid var(--border-strong);
  box-shadow: rgba(0, 0, 0, 0.4) 0 8px 24px;
  animation: toastIn 0.3s ease;
  max-width: 400px;
  overflow: hidden;
}
.toast::before {
  content: "";
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 4px;
  background: var(--text-muted);
}
.toast-success::before { background: var(--brand); }
.toast-error::before { background: var(--danger); }
.toast-info::before { background: var(--brand-link); }

@keyframes toastIn {
  from { opacity: 0; transform: translateX(40px); }
  to { opacity: 1; transform: translateX(0); }
}

/* ===== Form Elements ===== */
.form-group {
  margin-bottom: 16px;
}
.form-group label {
  display: block;
  font-size: 12px;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 6px;
}
.form-control {
  width: 100%;
  padding: 8px 12px;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  font-size: 13px;
  color: var(--text-primary);
  background: var(--bg-surface);
  transition: border-color 0.15s ease;
  outline: none;
  font-family: inherit;
}
.form-control:hover { border-color: var(--border-stronger); }
.form-control:focus {
  border-color: var(--brand);
  box-shadow: none;
}
.form-control::placeholder { color: var(--text-dim); }

select.form-control {
  appearance: none;
  background-image: linear-gradient(45deg, transparent 50%, var(--text-muted) 50%),
                    linear-gradient(135deg, var(--text-muted) 50%, transparent 50%);
  background-position: calc(100% - 16px) 50%, calc(100% - 11px) 50%;
  background-size: 5px 5px, 5px 5px;
  background-repeat: no-repeat;
  padding-right: 32px;
}

textarea.form-control {
  resize: vertical;
  min-height: 80px;
}

.form-error {
  color: var(--danger);
  font-size: 12px;
  margin-top: 4px;
}

/* ===== Card ===== */
.card {
  background: var(--bg-canvas);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 20px;
}

/* ===== Table ===== */
.table-wrapper {
  overflow-x: auto;
}
table {
  width: 100%;
  border-collapse: collapse;
  background: var(--bg-canvas);
}
table th, table td {
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid var(--border-subtle);
  font-size: 13px;
  color: var(--text-primary);
}
table th {
  background: transparent;
  font-family: var(--font-mono);
  font-weight: 400;
  font-size: 11px;
  letter-spacing: 1.2px;
  text-transform: uppercase;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border);
}
table tbody tr:hover td { background: var(--bg-hover); }
table code {
  background: rgba(255, 255, 255, 0.04);
  padding: 2px 6px;
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-primary);
}

/* ===== Status Badge ===== */
.badge {
  display: inline-block;
  padding: 3px 10px;
  border-radius: var(--radius-pill);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.6px;
  text-transform: uppercase;
  font-weight: 400;
  border: 1px solid transparent;
}
.badge-success {
  background: var(--brand-soft);
  color: var(--brand);
  border-color: var(--border-accent);
}
.badge-danger {
  background: var(--danger-soft);
  color: var(--danger);
  border-color: rgba(229, 72, 77, 0.35);
}
.badge-default {
  background: var(--bg-elevated);
  color: var(--text-secondary);
  border-color: var(--border);
}

/* ===== Sidebar (Console Layout) ===== */
.ep-sidebar {
  width: 220px;
  min-width: 220px;
  background: var(--bg-canvas);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  height: 100vh;
  transition: width 0.18s ease, min-width 0.18s ease;
}

/* ----- Collapsed sidebar ----- */
.ep-sidebar.collapsed {
  width: 56px;
  min-width: 56px;
}
.ep-sidebar.collapsed .ep-sidebar-header {
  padding: 14px 8px;
  text-align: center;
}
.ep-sidebar.collapsed .ep-sidebar-header .ep-title,
.ep-sidebar.collapsed .ep-sidebar-header .ep-subtitle,
.ep-sidebar.collapsed .ep-sidebar-footer .user-info,
.ep-sidebar.collapsed .ep-sidebar-footer .admin-link,
.ep-sidebar.collapsed .sidebar-toggle-text {
  display: none;
}
.ep-sidebar.collapsed .ep-nav-item {
  padding: 10px 0;
  justify-content: center;
  font-size: 0;
  gap: 0;
}
.ep-sidebar.collapsed .ep-nav-item .nav-icon { margin: 0; }
.ep-sidebar.collapsed .ep-nav-item.active::before { width: 2px; }
.ep-sidebar.collapsed .ep-sidebar-footer { padding: 10px 6px; }

/* Sidebar toggle button (bottom of footer) */
.sidebar-toggle {
  margin-top: 10px;
  width: 100%;
  background: transparent;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 6px 10px;
  color: var(--text-muted);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  font-size: 12px;
  transition: color 0.15s ease, border-color 0.15s ease, background 0.15s ease;
}
.sidebar-toggle:hover {
  color: var(--text-primary);
  border-color: var(--border);
  background: var(--bg-hover);
}
.sidebar-toggle svg { width: 14px; height: 14px; }
.sidebar-toggle .icon-expand { display: none; }
.ep-sidebar.collapsed .sidebar-toggle .icon-collapse { display: none; }
.ep-sidebar.collapsed .sidebar-toggle .icon-expand { display: block; }

.ep-sidebar-header {
  padding: 18px 18px 14px;
  border-bottom: 1px solid var(--border-subtle);
}
.ep-sidebar-header .back-link {
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--text-muted);
  text-decoration: none;
  font-size: 12px;
  margin-bottom: 8px;
}
.ep-sidebar-header .back-link:hover { color: var(--brand-link); }
.ep-sidebar-header .ep-title {
  font-size: 15px;
  font-weight: 500;
  color: var(--text-primary);
  letter-spacing: -0.16px;
  word-break: break-all;
  line-height: 1.3;
}
.ep-sidebar-header .ep-subtitle {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 1.2px;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-top: 6px;
}

.ep-nav { padding: 10px 0; flex: 1; overflow-y: auto; }
.ep-nav-item {
  padding: 10px 16px 10px 20px;
  font-size: 13px;
  color: var(--text-secondary);
  cursor: pointer;
  transition: background 0.15s ease, color 0.15s ease;
  display: flex;
  align-items: center;
  gap: 10px;
  position: relative;
  user-select: none;
}
.ep-nav-item:hover { background: var(--bg-hover); color: var(--text-primary); }
.ep-nav-item.active {
  background: var(--brand-soft);
  color: var(--text-primary);
  font-weight: 500;
}
.ep-nav-item.active::before {
  content: '';
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 3px;
  background: var(--brand);
  border-radius: 0 2px 2px 0;
}
.ep-nav-item .nav-icon {
  width: 20px;
  height: 16px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  font-size: 14px;
  flex-shrink: 0;
  color: var(--text-muted);
}
.ep-nav-item .nav-icon svg {
  width: 16px;
  height: 16px;
  display: block;
  stroke: currentColor;
}
.ep-nav-item .nav-icon img {
  width: 16px;
  height: 16px;
  display: block;
  object-fit: contain;
}
:root[data-theme="dark"] .ep-nav-item .nav-icon img {
  filter: invert(1) brightness(1.1);
}
.ep-nav-item.active .nav-icon { color: var(--brand); }
.ep-nav-item.disabled {
  color: var(--text-dim);
  cursor: not-allowed;
}
.ep-nav-item.disabled:hover {
  background: transparent;
  color: var(--text-dim);
}

/* ===== Sidebar Footer ===== */
.ep-sidebar-footer {
  padding: 14px 18px;
  border-top: 1px solid var(--border-subtle);
  font-size: 12px;
  color: var(--text-muted);
}
.ep-sidebar-footer .user-info {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 8px;
}
.ep-sidebar-footer .user-name {
  font-weight: 500;
  color: var(--text-primary);
}
.ep-sidebar-footer .logout-btn {
  color: var(--text-muted);
  cursor: pointer;
  border: none;
  background: none;
  font-size: 12px;
  padding: 2px 8px;
  border-radius: var(--radius-sm);
  font-family: inherit;
}
.ep-sidebar-footer .logout-btn:hover { color: var(--danger); background: var(--danger-soft); }
.ep-sidebar-footer .admin-link {
  display: block;
  margin-top: 8px;
  color: var(--brand-link);
  font-size: 12px;
  text-decoration: none;
}
.ep-sidebar-footer .admin-link:hover { color: var(--brand); }

/* ===== Main Content (Console) ===== */
.ep-main {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background: var(--bg-canvas);
}
.ep-toolbar {
  height: 48px;
  background: var(--bg-canvas);
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  padding: 0 20px;
  gap: 12px;
  flex-shrink: 0;
}
.ep-toolbar-title {
  font-size: 13px;
  font-weight: 500;
  color: var(--text-primary);
  letter-spacing: -0.1px;
}
.ep-toolbar-url {
  font-size: 12px;
  color: var(--text-muted);
  font-family: var(--font-mono);
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.ep-toolbar-actions { display: flex; gap: 6px; }
.ep-btn {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 5px 12px;
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: 12px;
  cursor: pointer;
  border: 1px solid var(--border-strong);
  background: var(--bg-surface);
  color: var(--text-secondary);
  transition: border-color 0.15s ease, color 0.15s ease;
}
.ep-btn:hover { border-color: var(--text-primary); color: var(--text-primary); }

/* ===== Iframe Container ===== */
.ep-iframe-container {
  flex: 1;
  overflow: hidden;
  position: relative;
  background: var(--bg-canvas);
}
.ep-iframe-container iframe {
  width: 100%;
  height: 100%;
  border: none;
  background: var(--iframe-bg);
}

/* ===== Empty State ===== */
.ep-empty {
  display: none;
  flex: 1;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  color: var(--text-muted);
  background: var(--bg-canvas);
}
.ep-empty.active { display: flex; }
.ep-empty .empty-icon {
  font-size: 48px;
  margin-bottom: 16px;
  opacity: 0.35;
  color: var(--text-secondary);
}
.ep-empty p { font-size: 15px; margin-bottom: 6px; color: var(--text-secondary); }
.ep-empty .sub {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 1.2px;
  text-transform: uppercase;
  color: var(--text-muted);
}

/* ===== Loading ===== */
.ep-loading {
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: var(--bg-canvas);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10;
  transition: opacity 0.3s;
}
.ep-loading.hidden { opacity: 0; pointer-events: none; }
.ep-loading-spinner {
  width: 32px;
  height: 32px;
  border: 2px solid var(--border);
  border-top-color: var(--brand);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ===== Login Page ===== */
.login-wrapper {
  display: flex;
  min-height: 100vh;
  background-color: var(--bg-canvas);
}
.login-wrapper::before {
  content: '';
  flex: 1 1 60%;
  background-image: url('../img/login-bg.png');
  background-repeat: no-repeat;
  background-position: center center;
  background-size: cover;
  background-color: var(--bg-subtle, var(--bg-canvas));
  position: relative;
  box-shadow: inset -40px 0 60px -40px rgba(0, 0, 0, 0.08);
}
.login-card {
  flex: 1 1 40%;
  display: flex;
  flex-direction: column;
  justify-content: center;
  background: var(--bg-canvas);
  border: none;
  border-radius: 0;
  box-shadow: none;
  padding: 48px 64px;
  width: 100%;
  max-width: none;
  align-self: stretch;
  margin: 0;
}
.login-card form,
.login-card .login-logo,
.login-card .login-error,
.login-card .login-warning {
  max-width: 360px;
  width: 100%;
  margin-left: auto;
  margin-right: auto;
}

@media (max-width: 900px) {
  .login-wrapper { flex-direction: column; }
  .login-wrapper::before {
    flex: 0 0 240px;
    width: 100%;
    box-shadow: inset 0 -40px 60px -40px rgba(0, 0, 0, 0.08);
  }
  .login-card { padding: 32px 24px; }
}
.login-card .login-logo {
  text-align: center;
  margin-bottom: 32px;
}
.login-card .login-logo h1 {
  font-size: 32px;
  font-weight: 400;
  letter-spacing: -0.02em;
  line-height: 1.1;
  color: var(--text-primary);
}
.login-card .login-logo p {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 1.2px;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-top: 12px;
}
.login-card .login-submit {
  width: 100%;
  padding: 10px 20px;
  font-size: 14px;
  margin-top: 8px;
}

.login-error {
  background: var(--danger-soft);
  border: 1px solid rgba(229, 72, 77, 0.35);
  color: var(--danger);
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  margin-bottom: 16px;
}

.login-warning {
  background: var(--warn-soft);
  border: 1px solid rgba(245, 165, 36, 0.35);
  color: var(--warn);
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  margin-bottom: 16px;
}

/* ===== Flash Messages ===== */
.flash-msg {
  padding: 10px 14px;
  margin-bottom: 16px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  border: 1px solid var(--border);
  background: var(--bg-elevated);
  color: var(--text-secondary);
}
.flash-msg.flash-success {
  background: var(--brand-soft);
  border-color: var(--border-accent);
  color: var(--brand);
}
.flash-msg.flash-error {
  background: var(--danger-soft);
  border-color: rgba(229, 72, 77, 0.35);
  color: var(--danger);
}
.flash-msg.flash-info {
  background: rgba(62, 207, 142, 0.06);
  border-color: var(--border);
  color: var(--text-secondary);
}

.table-empty {
  text-align: center;
  color: var(--text-muted);
  padding: 40px 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.6px;
  text-transform: uppercase;
}

/* ===== Admin Layout ===== */
.admin-layout {
  display: flex;
  height: 100vh;
  background: var(--bg-canvas);
}
.admin-sidebar {
  width: 220px;
  min-width: 220px;
  background: var(--bg-surface);
  color: var(--text-primary);
  display: flex;
  flex-direction: column;
  border-right: 1px solid var(--border);
}
.admin-sidebar-header {
  padding: 22px 18px 18px;
  border-bottom: 1px solid var(--border-subtle);
}
.admin-sidebar-header h2 {
  font-size: 15px;
  font-weight: 500;
  letter-spacing: -0.16px;
  color: var(--text-primary);
}
.admin-sidebar-header p {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 1.2px;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-top: 6px;
}
.admin-nav { padding: 10px 0; flex: 1; }
.admin-nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 16px 10px 20px;
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 13px;
  transition: background 0.15s ease, color 0.15s ease;
  position: relative;
}
.admin-nav-item:hover { background: var(--bg-hover); color: var(--text-primary); }
.admin-nav-item.active {
  background: var(--brand-soft);
  color: var(--text-primary);
  font-weight: 500;
}
.admin-nav-item.active::before {
  content: '';
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 3px;
  background: var(--brand);
  border-radius: 0 2px 2px 0;
}

.admin-main {
  flex: 1;
  overflow-y: auto;
  background: var(--bg-canvas);
}
.admin-header {
  background: var(--bg-canvas);
  border-bottom: 1px solid var(--border-subtle);
  padding: 18px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.admin-header h1 {
  font-size: 20px;
  font-weight: 400;
  letter-spacing: -0.2px;
  color: var(--text-primary);
}
.admin-content {
  padding: 24px;
}

/* ===== Module Grid (Admin) ===== */
.module-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(360px, 1fr));
  gap: 16px;
}
.module-card {
  background: var(--bg-canvas);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 20px;
  transition: border-color 0.2s ease, background 0.2s ease;
}
.module-card:hover {
  border-color: var(--border-accent);
  background: var(--bg-canvas);
}
.module-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}
.module-card-title {
  display: flex;
  align-items: center;
  gap: 12px;
}
.module-card-title .module-icon {
  width: 38px;
  height: 38px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  border: 1px solid var(--border);
}
.module-card-title .module-icon img {
  width: 22px;
  height: 22px;
  display: block;
  object-fit: contain;
}
:root[data-theme="dark"] .module-card-title .module-icon img {
  filter: invert(1) brightness(1.1);
}
.module-card-title h3 {
  font-size: 16px;
  font-weight: 500;
  color: var(--text-primary);
  letter-spacing: -0.16px;
}
.module-card-desc {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 14px;
}
.module-card-meta {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-muted);
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.module-card-actions {
  display: flex;
  gap: 8px;
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px solid var(--border-subtle);
}

/* ===== Modal ===== */
.modal-overlay {
  display: none;
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  z-index: 1000;
  align-items: center;
  justify-content: center;
}
.modal-overlay.active { display: flex; }
.modal {
  background: var(--bg-canvas);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 520px;
  box-shadow: var(--shadow-modal);
}
.modal-header {
  padding: 18px 24px;
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.modal-header h3 {
  font-size: 16px;
  font-weight: 500;
  color: var(--text-primary);
  letter-spacing: -0.16px;
}
.modal-close {
  background: none; border: none; cursor: pointer;
  font-size: 20px; color: var(--text-muted); padding: 4px;
  line-height: 1;
}
.modal-close:hover { color: var(--text-primary); }
.modal-body { padding: 24px; }
.modal-footer {
  padding: 14px 24px;
  border-top: 1px solid var(--border-subtle);
  display: flex;
  justify-content: flex-end;
  gap: 8px;
}

/* ===== LLM Config Page ===== */
.llm-config-page { padding: 24px; background: var(--bg-canvas); min-height: 100%; }

.llm-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
  gap: 12px;
}
.llm-toolbar-left {
  display: flex;
  align-items: center;
  gap: 8px;
  flex: 1;
}
.llm-search { max-width: 280px; }
.llm-filter { max-width: 160px; }

.llm-table-wrapper {
  overflow-x: auto;
  background: var(--bg-canvas);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
}
.llm-table {
  width: 100%;
  border-collapse: collapse;
  background: transparent;
}
.llm-table th, .llm-table td {
  padding: 12px 14px;
  text-align: left;
  border-bottom: 1px solid var(--border-subtle);
  font-size: 13px;
  white-space: nowrap;
  color: var(--text-primary);
}
.llm-table th {
  background: transparent;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 1.2px;
  text-transform: uppercase;
  font-weight: 400;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border);
}
.llm-table tbody tr:last-child td { border-bottom: none; }
.llm-table tbody tr:hover td { background: var(--bg-hover); }
.llm-table td code {
  background: rgba(255, 255, 255, 0.05);
  padding: 2px 6px;
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-primary);
}
.llm-host-cell { max-width: 180px; overflow: hidden; text-overflow: ellipsis; }
.llm-actions { white-space: nowrap; }

.model-type-tag {
  display: inline-block;
  padding: 2px 10px;
  border-radius: var(--radius-pill);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.6px;
  text-transform: uppercase;
  font-weight: 400;
}

.llm-form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px 20px;
}
.llm-form-full { grid-column: 1 / -1; }
.llm-form-grid .required { color: var(--danger); margin-left: 2px; }

/* ===== Built-in Container ===== */
.ep-builtin-container { background: var(--bg-canvas); }

/* ===== Theme Toggle (floating) ===== */
.theme-toggle {
  position: fixed;
  right: 20px;
  bottom: 20px;
  width: 38px;
  height: 38px;
  border-radius: var(--radius-pill);
  background: var(--bg-canvas);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  transition: border-color 0.15s ease, color 0.15s ease, transform 0.2s ease;
  font-family: inherit;
  padding: 0;
}
.theme-toggle:hover {
  border-color: var(--border-accent);
  color: var(--brand);
  transform: translateY(-1px);
}
.theme-toggle svg { width: 16px; height: 16px; display: block; }
.theme-toggle .icon-sun { display: none; }
.theme-toggle .icon-moon { display: block; }
:root[data-theme="light"] .theme-toggle .icon-sun { display: block; }
:root[data-theme="light"] .theme-toggle .icon-moon { display: none; }

/* ===== Scrollbar (subtle) ===== */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb {
  background: var(--border-strong);
  border-radius: var(--radius-pill);
  border: 2px solid var(--bg-canvas);
}
::-webkit-scrollbar-thumb:hover { background: var(--border-stronger); }

/* ===== Responsive ===== */

/* --- Tablet / Small desktop (<=768px) --- */
@media (max-width: 768px) {
  .ep-sidebar, .admin-sidebar { width: 180px; min-width: 180px; }
  .ep-toolbar-url { display: none; }
  .admin-content { padding: 16px; }
  .admin-header { padding: 14px 16px; }
  .modal { max-width: calc(100vw - 32px); }
}

/* --- Mobile (<=600px) --- */
@media (max-width: 600px) {
  /* Console sidebar: collapse to icon-only */
  .ep-sidebar, .admin-sidebar { width: 56px; min-width: 56px; }
  .ep-sidebar-header .ep-title,
  .ep-sidebar-header .ep-subtitle,
  .ep-sidebar-footer .admin-link,
  .ep-sidebar-footer .user-info,
  .admin-sidebar-header p,
  .sidebar-toggle-text { display: none; }
  .ep-sidebar-header { padding: 12px 8px; text-align: center; }
  .ep-nav-item {
    padding: 10px 0;
    justify-content: center;
    font-size: 0;
    gap: 0;
  }
  .ep-nav-item .nav-icon { margin: 0; }
  .ep-sidebar-footer { padding: 10px 6px; }

  /* Toolbar */
  .ep-toolbar { padding: 0 12px; height: 42px; gap: 8px; }
  .ep-toolbar-title { font-size: 12px; }
  .ep-toolbar-url { display: none; }
  .ep-toolbar-actions .ep-btn { padding: 4px 8px; font-size: 11px; }

  /* Admin */
  .admin-layout { flex-direction: column; }
  .admin-sidebar {
    width: 100%; min-width: 100%;
    height: auto; flex-direction: row;
    border-right: none; border-bottom: 1px solid var(--border);
  }
  .admin-sidebar-header { padding: 10px 14px; border-bottom: none; }
  .admin-sidebar-header h2 { font-size: 13px; }
  .admin-nav { display: flex; padding: 0 8px; gap: 4px; overflow-x: auto; flex: unset; }
  .admin-nav-item { padding: 8px 12px; font-size: 12px; white-space: nowrap; }
  .admin-nav-item.active::before { display: none; }
  .admin-main { height: calc(100vh - 56px); }
  .admin-content { padding: 14px; }
  .admin-header { padding: 12px 14px; }
  .admin-header h1 { font-size: 16px; }

  /* Grids */
  .module-grid { grid-template-columns: 1fr; }
  .llm-form-grid { grid-template-columns: 1fr; }

  /* Modal */
  .modal { max-width: calc(100vw - 24px); border-radius: var(--radius-md); }
  .modal-header { padding: 14px 16px; }
  .modal-body { padding: 16px; }
  .modal-footer { padding: 12px 16px; }

  /* Theme toggle */
  .theme-toggle { right: 12px; bottom: 12px; width: 34px; height: 34px; }

  /* Empty state */
  .ep-empty .empty-icon { font-size: 36px; }
  .ep-empty p { font-size: 14px; }
}

/* --- Small mobile (<=480px): login page refinements --- */
@media (max-width: 480px) {
  .login-wrapper::before {
    flex: 0 0 140px;
  }
  .login-card { padding: 24px 20px; }
  .login-card .login-logo h1 { font-size: 22px; }
  .login-card .login-logo { margin-bottom: 24px; }
  .login-card form,
  .login-card .login-logo,
  .login-card .login-error,
  .login-card .login-warning { max-width: 100%; }
  .form-control { padding: 10px 12px; font-size: 14px; }
  .login-card .login-submit { padding: 12px 20px; font-size: 15px; }
}