:root {
    --color-bg: #fafaf8;
    --color-bg-secondary: #ffffff;
    --color-text-primary: #1a1a18;
    --color-text-secondary: #75756f;
    --color-border: #e8e8e4;
    --color-accent-primary: #2563eb;
    --color-success: #16a34a;
    --color-danger: #dc2626;
    --color-warning: #ea580c;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --font-body: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --transition-base: 300ms cubic-bezier(0.4, 0, 0.2, 1);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { font-size: 16px; overflow-x: hidden; }
body { font-family: var(--font-body); background-color: var(--color-bg); color: var(--color-text-primary); line-height: 1.6; overflow-x: hidden; }

.container { display: flex; flex-direction: column; min-height: 100vh; }

/* HEADER */
.header { background-color: var(--color-bg-secondary); border-bottom: 1px solid var(--color-border); padding: var(--spacing-md) var(--spacing-xl); position: sticky; top: 0; z-index: 100; display: flex; align-items: center; gap: var(--spacing-md); }
.menu-toggle { display: none; background: none; border: none; font-size: 1.5rem; cursor: pointer; padding: 0; }
.header-branding { flex-shrink: 0; }
.logo { font-size: 1.25rem; font-weight: 700; margin: 0; }
.header-marquee { flex: 1; overflow: hidden; background: linear-gradient(90deg, transparent, var(--color-text-secondary), transparent); }
.marquee-text { display: inline-block; padding-left: 100%; animation: marquee 15s linear infinite; color: var(--color-text-secondary); font-size: 0.875rem; white-space: nowrap; }
@keyframes marquee { 0% { transform: translateX(0); } 100% { transform: translateX(-100%); } }

/* TOGGLE SWITCH */
.header-toggle { display: flex; align-items: center; gap: var(--spacing-sm); }
.toggle-switch { position: relative; display: inline-block; width: 2.5rem; height: 1.25rem; }
.toggle-switch input { opacity: 0; width: 0; height: 0; }
.toggle-slider { position: absolute; cursor: pointer; top: 0; left: 0; right: 0; bottom: 0; background-color: var(--color-border); transition: 0.3s; border-radius: 1.25rem; }
.toggle-slider:before { position: absolute; content: ""; height: 1rem; width: 1rem; left: 0.125rem; bottom: 0.0625rem; background-color: white; transition: 0.3s; border-radius: 50%; }
input:checked + .toggle-slider { background-color: var(--color-success); }
input:checked + .toggle-slider:before { transform: translateX(1.25rem); }
.toggle-label { font-size: 0.875rem; color: var(--color-text-secondary); white-space: nowrap; }

@media (max-width: 768px) {
    .header-toggle { display: none; }
}

.main-content { flex: 1; display: flex; max-width: 1600px; width: 100%; margin: 0 auto; gap: var(--spacing-xl); padding: var(--spacing-xl); }
.sidebar { width: 220px; display: flex; flex-direction: column; gap: var(--spacing-lg); position: sticky; top: 80px; height: fit-content; }
.editor { flex: 1; }

.btn { display: inline-flex; align-items: center; gap: var(--spacing-sm); padding: var(--spacing-sm) var(--spacing-md); border: 1px solid transparent; border-radius: 0.5rem; font-size: 1rem; font-weight: 500; cursor: pointer; transition: all var(--transition-base); font-family: var(--font-body); }
.btn:disabled { opacity: 0.4; cursor: not-allowed; color: var(--color-text-secondary); }
.btn-primary { background-color: var(--color-accent-primary); color: white; }
.btn-primary:hover:not(:disabled) { background-color: #1d4ed8; transform: translateY(-1px); box-shadow: var(--shadow-md); }
.btn-secondary { background-color: transparent; color: var(--color-text-primary); border-color: var(--color-border); }
.btn-secondary:hover:not(:disabled) { background-color: var(--color-bg); border-color: var(--color-text-secondary); }
.btn-success { background-color: var(--color-success); color: white; }
.btn-success:hover:not(:disabled) { background-color: #15803d; transform: translateY(-1px); box-shadow: var(--shadow-md); }
.btn-danger { background-color: var(--color-danger); color: white; }
.btn-danger:hover:not(:disabled) { background-color: #b91c1c; }
.btn-small { padding: 0.25rem 0.5rem; font-size: 0.875rem; white-space: nowrap; }
.btn-large { padding: var(--spacing-md) var(--spacing-lg); font-size: 1.125rem; width: 100%; justify-content: center; }

.actions-group { display: flex; flex-direction: column; gap: var(--spacing-sm); padding-bottom: var(--spacing-lg); border-bottom: 1px solid var(--color-border); }
.actions-group:last-child { border-bottom: none; }
.actions-group .btn { width: 100%; justify-content: center; }

/* MOBILE MENU */
.mobile-menu { position: fixed; top: 0; left: 0; right: 0; bottom: 0; background-color: rgba(0,0,0,0.5); z-index: 200; display: flex; flex-direction: column; }
.mobile-menu.hidden { display: none; }
.mobile-menu-header { background-color: var(--color-bg-secondary); border-bottom: 1px solid var(--color-border); padding: var(--spacing-lg); display: flex; justify-content: space-between; align-items: center; }
.mobile-menu-header h2 { font-size: 1.25rem; margin: 0; }
.close-mobile-menu { background: none; border: none; font-size: 1.5rem; cursor: pointer; padding: 0; }
.mobile-menu-content { background-color: var(--color-bg-secondary); flex: 1; overflow-y: auto; padding: var(--spacing-lg); display: flex; flex-direction: column; gap: var(--spacing-sm); }
.mobile-menu-item { padding: var(--spacing-md); border: 1px solid var(--color-border); border-radius: 0.5rem; background-color: white; color: var(--color-text-primary); font-weight: 500; cursor: pointer; transition: all var(--transition-base); text-align: left; }
.mobile-menu-item:hover { background-color: var(--color-bg); border-color: var(--color-accent-primary); }
.mobile-menu-item.primary { background-color: var(--color-success); color: white; border-color: var(--color-success); }
.mobile-menu-item.primary:hover { background-color: #15803d; }

.form-group { margin-bottom: var(--spacing-lg); }
.form-group label { display: block; font-weight: 600; margin-bottom: var(--spacing-sm); font-size: 0.875rem; }
.form-group input { width: 100%; padding: var(--spacing-md); border: 1px solid var(--color-border); border-radius: 0.5rem; font-family: var(--font-body); }
.form-group input:focus { outline: none; border-color: var(--color-accent-primary); box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1); }

.input-with-emoji { display: flex; align-items: center; border: 1px solid var(--color-border); border-radius: 0.5rem; overflow: hidden; }
.emoji-picker-trigger { padding: var(--spacing-md); font-size: 1.5rem; cursor: pointer; background-color: var(--color-bg); border-right: 1px solid var(--color-border); user-select: none; }
.input-with-emoji input { border: none; flex: 1; }

.emoji-picker { background-color: var(--color-bg-secondary); border: 1px solid var(--color-border); border-radius: 0.5rem; padding: var(--spacing-md); margin-bottom: var(--spacing-md); }
.emoji-search { width: 100%; padding: var(--spacing-sm) var(--spacing-md); border: 1px solid var(--color-border); border-radius: 0.375rem; font-size: 0.875rem; margin-bottom: var(--spacing-md); }
.emoji-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(2rem, 1fr)); gap: 0.25rem; }
.emoji-item { padding: var(--spacing-sm); cursor: pointer; border-radius: 0.375rem; font-size: 1.5rem; text-align: center; transition: background-color var(--transition-base); user-select: none; }
.emoji-item:hover { background-color: var(--color-bg); }

.categories-list { display: flex; flex-direction: column; gap: var(--spacing-xl); }
.category { background-color: var(--color-bg-secondary); border: 1px solid var(--color-border); border-radius: 0.75rem; }
.category-header { display: flex; align-items: center; justify-content: space-between; padding: var(--spacing-lg); border-bottom: 1px solid var(--color-border); user-select: none; }
.category-header:hover { background-color: var(--color-bg); }
.category-toggle { background: none; border: none; font-size: 1.25rem; cursor: pointer; padding: 0; width: 1.5rem; height: 1.5rem; display: flex; align-items: center; justify-content: center; }
.category-toggle.collapsed::before { content: '▶'; }
.category-toggle::before { content: '▼'; }
.category-title-section { display: flex; align-items: center; gap: var(--spacing-md); flex: 1; }
.category-emoji { font-size: 2rem; }
.category-title { font-size: 1.125rem; font-weight: 600; }
.category-actions { display: flex; gap: var(--spacing-sm); }
.category-content { padding: var(--spacing-lg); }
.category-content.collapsed { display: none; }
.feeds-list { display: flex; flex-direction: column; gap: var(--spacing-md); }
.feed-item { display: flex; align-items: center; gap: var(--spacing-md); padding: var(--spacing-md); background-color: var(--color-bg); border: 1px solid var(--color-border); border-radius: 0.5rem; }
.feed-item:hover { background-color: var(--color-bg-secondary); border-color: var(--color-accent-primary); }
.feed-info { flex: 1; min-width: 0; }
.feed-title { font-weight: 500; margin-bottom: 0.25rem; }
.feed-url { font-size: 0.875rem; color: var(--color-text-secondary); word-break: break-all; }
.feed-status { display: inline-flex; align-items: center; gap: 0.25rem; padding: 0.25rem 0.5rem; border-radius: 0.375rem; font-size: 0.875rem; margin-top: var(--spacing-sm); }
.feed-status.valid { background-color: rgba(22, 163, 74, 0.1); color: var(--color-success); }
.feed-status.invalid { background-color: rgba(220, 38, 38, 0.1); color: var(--color-danger); }
.feed-status.unchecked { background-color: rgba(234, 88, 12, 0.1); color: var(--color-warning); }
.feed-actions { display: flex; gap: var(--spacing-sm); }
.feed-order-buttons { display: flex; gap: 0.25rem; }
.feed-order-buttons button { padding: 0.25rem 0.375rem; font-size: 0.75rem; }
.add-feed-btn { width: 100%; padding: var(--spacing-md); border: 2px dashed var(--color-border); border-radius: 0.5rem; background-color: transparent; color: var(--color-text-secondary); cursor: pointer; transition: all var(--transition-base); font-size: 0.875rem; }
.add-feed-btn:hover { border-color: var(--color-accent-primary); color: var(--color-accent-primary); background-color: rgba(37, 99, 235, 0.05); }

.empty-state { display: flex; flex-direction: column; align-items: center; justify-content: center; padding: var(--spacing-xl); text-align: center; color: var(--color-text-secondary); }
.empty-icon { font-size: 4rem; margin-bottom: var(--spacing-lg); }
.empty-state h2 { color: var(--color-text-primary); margin-bottom: var(--spacing-sm); }

.modal { position: fixed; top: 0; left: 0; right: 0; bottom: 0; background-color: rgba(0, 0, 0, 0.3); display: flex; align-items: center; justify-content: center; z-index: 1000; }
.modal.hidden { display: none; }
.modal-content { background-color: var(--color-bg-secondary); border-radius: 0.75rem; box-shadow: var(--shadow-md); width: 90%; max-width: 500px; max-height: 90vh; overflow-y: auto; }
.modal-header { display: flex; justify-content: space-between; align-items: center; padding: var(--spacing-lg); border-bottom: 1px solid var(--color-border); }
.modal-header h2 { font-size: 1.125rem; margin: 0; }
.modal-close { background: none; border: none; font-size: 1.5rem; cursor: pointer; color: var(--color-text-secondary); padding: 0; }
.form { padding: var(--spacing-lg); }
.form-actions { display: flex; gap: var(--spacing-md); justify-content: flex-end; margin-top: var(--spacing-xl); flex-wrap: wrap; }

.validation-status { padding: var(--spacing-md); border-radius: 0.5rem; margin-bottom: var(--spacing-md); font-size: 0.875rem; }
.validation-status.hidden { display: none; }
.validation-status.valid { background-color: rgba(22, 163, 74, 0.1); color: var(--color-success); border: 1px solid var(--color-success); }
.validation-status.invalid { background-color: rgba(220, 38, 38, 0.1); color: var(--color-danger); border: 1px solid var(--color-danger); }
.validation-status.checking { background-color: rgba(234, 88, 12, 0.1); color: var(--color-warning); border: 1px solid var(--color-warning); }

.toast-container { position: fixed; bottom: var(--spacing-xl); right: var(--spacing-xl); z-index: 10000; display: flex; flex-direction: column; gap: var(--spacing-md); }
.toast { background-color: var(--color-bg-secondary); border: 1px solid var(--color-border); border-radius: 0.5rem; padding: var(--spacing-md) var(--spacing-lg); box-shadow: var(--shadow-md); display: flex; align-items: center; gap: var(--spacing-md); max-width: 400px; animation: slideInRight 300ms; }
.toast.success { border-left: 4px solid var(--color-success); color: var(--color-success); }
.toast.error { border-left: 4px solid var(--color-danger); color: var(--color-danger); }
@keyframes slideInRight { from { transform: translateX(400px); opacity: 0; } to { transform: translateX(0); opacity: 1; } }

.hidden { display: none !important; }

/* RESPONSIVE */
@media (max-width: 1024px) {
    .main-content { flex-direction: column; }
    .sidebar { width: 100%; flex-direction: row; flex-wrap: wrap; position: static; }
    .actions-group { flex: 1; min-width: 200px; }
}

@media (max-width: 768px) {
    .menu-toggle { display: block; }
    .header { padding: var(--spacing-md); overflow: hidden; }
    .header-marquee { display: none; }
    .logo { font-size: 1rem; }
    .sidebar { display: none; }
    .main-content { padding: var(--spacing-md); max-width: 100vw; }
    .category-header { padding: var(--spacing-md); flex-wrap: wrap; }
    .feed-item { flex-direction: column; align-items: flex-start; gap: var(--spacing-sm); }
    .feed-actions { width: 100%; flex-wrap: wrap; }
    .feed-actions .btn { min-width: 0; }
    .feed-order-buttons { width: 100%; display: grid; grid-template-columns: repeat(2, 1fr); gap: 0.25rem; }
    .feed-order-buttons button { width: 100%; }
    .move-menu { position: fixed; width: 90vw; left: 5vw; right: 5vw; min-width: auto; max-width: 300px; }
}

@media (max-width: 480px) {
    .header { gap: var(--spacing-sm); padding: var(--spacing-sm) var(--spacing-md); }
    .menu-toggle { font-size: 1.25rem; padding: var(--spacing-sm); }
    .main-content { padding: var(--spacing-sm); gap: var(--spacing-sm); max-width: 100vw; }
    .category { border-radius: 0.5rem; margin: 0; }
    .category-header { padding: var(--spacing-sm); gap: var(--spacing-sm); }
    .category-emoji { font-size: 1.5rem; }
    .category-title { font-size: 1rem; }
    .category-actions { gap: 0.25rem; }
    .feed-item { padding: var(--spacing-sm); gap: var(--spacing-xs, 0.25rem); }
    .feed-info { font-size: 0.75rem; }
    .feed-title { margin-bottom: 0.125rem; font-size: 0.875rem; }
    .feed-url { font-size: 0.65rem; }
    .feed-status { font-size: 0.75rem; padding: 0.125rem 0.25rem; }
    .feed-actions { gap: 0.25rem; }
    .feed-actions .btn-small { padding: 0.125rem 0.25rem; font-size: 0.65rem; }
    .btn { min-width: 0; }
    .feed-order-buttons { grid-template-columns: repeat(2, 1fr); }
}

.btn-toggle { padding: 0 var(--spacing-sm); min-width: auto; border: none; background: none; }
.btn-toggle:hover { background-color: var(--color-bg); }

.feed-actions { display: flex; gap: var(--spacing-sm); align-items: center; }
.feed-actions select { padding: var(--spacing-sm) var(--spacing-md); border: 1px solid var(--color-border); border-radius: 0.5rem; font-size: 0.875rem; cursor: pointer; background-color: white; }
.feed-actions select:hover { border-color: var(--color-accent-primary); }

/* Move Menu Styles */
.move-button-container { position: relative; display: flex; align-items: center; }
.move-menu { position: absolute; top: 100%; right: 0; background-color: var(--color-bg-secondary); border: 1px solid var(--color-border); border-radius: 0.5rem; box-shadow: var(--shadow-md); z-index: 500; min-width: 220px; margin-top: var(--spacing-sm); }
.move-menu.hidden { display: none; }
.move-menu-item { display: block; width: 100%; text-align: left; padding: var(--spacing-md); border: none; background: none; cursor: pointer; font-size: 0.875rem; color: var(--color-text-primary); transition: all var(--transition-base); }
.move-menu-item:first-child { border-radius: 0.5rem 0.5rem 0 0; }
.move-menu-item:last-child { border-radius: 0 0 0.5rem 0.5rem; }
.move-menu-item:hover { background-color: var(--color-bg); color: var(--color-accent-primary); }

.progress-bar-container { position: fixed; bottom: 0; left: 0; right: 0; background-color: var(--color-bg-secondary); border-top: 1px solid var(--color-border); padding: var(--spacing-md) var(--spacing-xl); display: flex; align-items: center; gap: var(--spacing-lg); z-index: 999; }
.progress-bar { flex: 1; height: 8px; background-color: var(--color-border); border-radius: 4px; overflow: hidden; }
.progress-bar-fill { height: 100%; background-color: var(--color-accent-primary); transition: width 200ms; }
.progress-text { font-size: 0.875rem; color: var(--color-text-secondary); min-width: 150px; }

.editor-toolbar { display: flex; gap: var(--spacing-md); margin-bottom: var(--spacing-lg); padding-bottom: var(--spacing-lg); border-bottom: 1px solid var(--color-border); }
.editor-toolbar .btn { min-width: 150px; justify-content: center; }

.feed-number-title { display: flex; align-items: center; gap: var(--spacing-sm); }
.feed-number { font-weight: 600; color: var(--color-accent-primary); min-width: 40px; font-size: 0.875rem; }

/* Category Status */
.category-status {
  display: flex;
  gap: var(--spacing-md);
  padding: var(--spacing-md) var(--spacing-lg);
  background-color: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  align-items: center;
  justify-content: flex-end;
}

.status-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: 0.375rem;
  font-size: 0.875rem;
  font-weight: 500;
}

.status-item.status-empty {
  opacity: 0.4;
  color: var(--color-text-secondary);
}

.status-item.status-valid {
  background-color: rgba(22, 163, 74, 0.1);
  color: var(--color-success);
}

.status-item.status-invalid {
  background-color: rgba(220, 38, 38, 0.1);
  color: var(--color-danger);
}

.status-item.status-pending {
  background-color: rgba(234, 88, 12, 0.1);
  color: #ea580c;
}

.status-icon {
  font-weight: 600;
  font-size: 1rem;
}

.status-count {
  min-width: 20px;
  text-align: center;
}