/* ===== CSS Variables (shadcn/ui inspired) ===== */
:root {
    --background: 0 0% 100%;
    --foreground: 222.2 84% 4.9%;
    --card: 0 0% 100%;
    --card-foreground: 222.2 84% 4.9%;
    --popover: 0 0% 100%;
    --popover-foreground: 222.2 84% 4.9%;
    --primary: 330 81% 60%;
    --primary-foreground: 0 0% 100%;
    --secondary: 210 40% 96.1%;
    --secondary-foreground: 222.2 47.4% 11.2%;
    --muted: 210 40% 96.1%;
    --muted-foreground: 215.4 16.3% 46.9%;
    --accent: 330 45% 96%;
    --accent-foreground: 330 81% 30%;
    --destructive: 0 84.2% 60.2%;
    --destructive-foreground: 0 0% 100%;
    --border: 214.3 31.8% 91.4%;
    --input: 214.3 31.8% 91.4%;
    --ring: 330 81% 60%;
    --radius: 0.5rem;
}

.dark {
    --background: 222.2 84% 4.9%;
    --foreground: 210 40% 98%;
    --card: 222.2 84% 4.9%;
    --card-foreground: 210 40% 98%;
    --popover: 222.2 84% 4.9%;
    --popover-foreground: 210 40% 98%;
    --primary: 330 81% 68%;
    --primary-foreground: 330 20% 10%;
    --secondary: 217.2 32.6% 17.5%;
    --secondary-foreground: 210 40% 98%;
    --muted: 217.2 32.6% 17.5%;
    --muted-foreground: 215 20.2% 65.1%;
    --accent: 330 25% 15%;
    --accent-foreground: 330 81% 68%;
    --destructive: 0 62.8% 50%;
    --destructive-foreground: 210 40% 98%;
    --border: 217.2 32.6% 17.5%;
    --input: 217.2 32.6% 17.5%;
    --ring: 330 81% 68%;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', sans-serif;
    background-color: hsl(var(--background));
    color: hsl(var(--foreground));
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

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

/* Sidebar */
.sidebar {
    width: 280px;
    border-right: 1px solid hsl(var(--border));
    background-color: hsl(var(--card));
    display: flex;
    flex-direction: column;
    position: fixed;
    height: 100vh;
    overflow-y: auto;
}

.sidebar-header {
    padding: 1.5rem 1.5rem 1rem;
    border-bottom: 1px solid hsl(var(--border));
}

.sidebar-brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.25rem;
    font-weight: 600;
}

.sidebar-nav {
    flex: 1;
    padding: 1rem 0.75rem;
}

.nav-section {
    margin-bottom: 1.5rem;
}

.nav-section-title {
    padding: 0.5rem 0.75rem;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: hsl(var(--muted-foreground));
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.625rem 0.75rem;
    margin: 0.125rem 0;
    border-radius: var(--radius);
    color: hsl(var(--foreground));
    text-decoration: none;
    cursor: pointer;
    transition: all 0.15s;
    font-size: 0.875rem;
    font-weight: 500;
    border: none;
    background: none;
    width: 100%;
    text-align: left;
}

.nav-item:hover {
    background-color: hsl(var(--accent));
    color: hsl(var(--accent-foreground));
}

.nav-item.active {
    background-color: hsl(var(--primary));
    color: hsl(var(--primary-foreground));
}

.nav-item-icon {
    font-size: 1.25rem;
    width: 1.25rem;
    height: 1.25rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.sidebar-footer {
    padding: 1rem 1.5rem;
    border-top: 1px solid hsl(var(--border));
}

/* Main Content */
.main-content {
    flex: 1;
    margin-left: 280px;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.main-header {
    position: sticky;
    top: 0;
    z-index: 10;
    background-color: hsl(var(--background) / 0.95);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid hsl(var(--border));
    padding: 1rem 2rem;
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 1400px;
}

.header-title {
    font-size: 1.5rem;
    font-weight: 600;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.content-wrapper {
    flex: 1;
    padding: 2rem;
    max-width: 1400px;
}

/* ===== Components ===== */
/* Card */
.card {
    background-color: hsl(var(--card));
    border: 1px solid hsl(var(--border));
    border-radius: calc(var(--radius) + 2px);
    box-shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1);
    display: flex;
    flex-direction: column;
    flex: 1;
    min-height: 0;
}

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

.card-header > .flex {
    margin-left: auto;
}

.card-title {
    font-size: 1.25rem;
    font-weight: 600;
    line-height: 1;
}

.card-description {
    font-size: 0.875rem;
    color: hsl(var(--muted-foreground));
    margin-top: 0.375rem;
}

.card-content {
    padding: 1.5rem;
    margin-top: 0;
}

.card-footer {
    padding: 1.5rem;
    border-top: 1px solid hsl(var(--border));
    display: flex;
    align-items: center;
    justify-content: space-between;
}

/* Button */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    border-radius: var(--radius);
    font-size: 0.875rem;
    font-weight: 500;
    padding: 0.625rem 1rem;
    border: none;
    cursor: pointer;
    transition: all 0.15s;
    text-decoration: none;
    white-space: nowrap;
}

.btn:disabled {
    pointer-events: none;
    opacity: 0.5;
}

.btn-primary {
    background-color: hsl(var(--primary));
    color: hsl(var(--primary-foreground));
}

.btn-primary:hover {
    background-color: hsl(var(--primary) / 0.9);
}

.btn-secondary {
    background-color: hsl(var(--secondary));
    color: hsl(var(--secondary-foreground));
}

.btn-secondary:hover {
    background-color: hsl(var(--secondary) / 0.8);
}

.btn-outline {
    background-color: transparent;
    border: 1px solid hsl(var(--input));
    color: hsl(var(--foreground));
}

.btn-outline:hover {
    background-color: hsl(var(--accent));
    color: hsl(var(--accent-foreground));
}

.btn-destructive {
    background-color: hsl(var(--destructive));
    color: hsl(var(--destructive-foreground));
}

.btn-destructive:hover {
    background-color: hsl(var(--destructive) / 0.9);
}

.btn-ghost {
    background-color: transparent;
    color: hsl(var(--foreground));
}

.btn-ghost:hover {
    background-color: hsl(var(--accent));
    color: hsl(var(--accent-foreground));
}

.btn-sm {
    padding: 0.375rem 0.75rem;
    font-size: 0.8125rem;
}

.btn-lg {
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
}

/* Input */
.input {
    display: flex;
    width: 100%;
    border-radius: var(--radius);
    border: 1px solid hsl(var(--input));
    background-color: hsl(var(--background));
    padding: 0.625rem 0.75rem;
    font-size: 0.875rem;
    transition: all 0.15s;
    color: hsl(var(--foreground));
}

select.input[multiple] {
    display: block;
    padding: 0.5rem;
}

select.input[multiple] option {
    padding: 0.5rem;
    border-radius: 4px;
    margin-bottom: 2px;
}

select.input[multiple] option:checked {
    background: hsl(var(--primary));
    color: hsl(var(--primary-foreground));
}

/* Multi-Select Component */
.multi-select-wrapper {
    position: relative;
    width: 100%;
}

.multi-select-trigger {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    padding: 0.625rem 0.75rem;
    border: 1px solid hsl(var(--input));
    border-radius: var(--radius);
    background-color: hsl(var(--background));
    cursor: pointer;
    transition: all 0.15s;
}

.multi-select-trigger:hover {
    border-color: hsl(var(--ring));
}

.multi-select-value {
    flex: 1;
    font-size: 0.875rem;
    color: hsl(var(--foreground));
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.multi-select-value.placeholder {
    color: hsl(var(--muted-foreground));
}

.multi-select-arrow {
    font-size: 0.75rem;
    color: hsl(var(--muted-foreground));
    transition: transform 0.2s;
}

.multi-select-trigger.open .multi-select-arrow {
    transform: rotate(180deg);
}

.multi-select-dropdown {
    position: absolute;
    top: calc(100% + 0.25rem);
    left: 0;
    right: 0;
    background: hsl(var(--background));
    border: 1px solid hsl(var(--input));
    border-radius: var(--radius);
    box-shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1);
    z-index: 50;
    max-height: 300px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.multi-select-search {
    padding: 0.5rem;
    border-bottom: 1px solid hsl(var(--border));
}

.multi-select-search .input {
    padding: 0.5rem;
    font-size: 0.875rem;
}

.multi-select-options {
    overflow-y: auto;
    max-height: 250px;
}

.multi-select-option {
    display: flex;
    align-items: center;
    padding: 0.625rem 0.75rem;
    cursor: pointer;
    transition: background-color 0.15s;
    gap: 0.5rem;
}

.multi-select-option:hover {
    background-color: hsl(var(--accent));
}

.multi-select-option input[type="checkbox"] {
    width: 1rem;
    height: 1rem;
    cursor: pointer;
}

.multi-select-option label {
    flex: 1;
    font-size: 0.875rem;
    cursor: pointer;
    margin: 0;
}

.multi-select-loading,
.multi-select-empty {
    padding: 1rem;
    text-align: center;
    color: hsl(var(--muted-foreground));
    font-size: 0.875rem;
}

.input:focus {
    outline: none;
    border-color: hsl(var(--ring));
    box-shadow: 0 0 0 2px hsl(var(--ring) / 0.2);
}

.input:disabled {
    cursor: not-allowed;
    opacity: 0.5;
}

/* Label */
.label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: 0.5rem;
    color: hsl(var(--foreground));
}

/* Badge */
.badge {
    display: inline-flex;
    align-items: center;
    border-radius: calc(var(--radius) - 2px);
    padding: 0.25rem 0.625rem;
    font-size: 0.75rem;
    font-weight: 600;
    line-height: 1;
    transition: all 0.15s;
}

.badge-default {
    background-color: hsl(var(--primary));
    color: hsl(var(--primary-foreground));
}

.badge-secondary {
    background-color: hsl(var(--secondary));
    color: hsl(var(--secondary-foreground));
}

.badge-success {
    background-color: hsl(142.1 76.2% 36.3%);
    color: hsl(0 0% 100%);
}

.badge-warning {
    background-color: hsl(47.9 95.8% 53.1%);
    color: hsl(26 83.3% 14.1%);
}

.badge-destructive {
    background-color: hsl(var(--destructive));
    color: hsl(var(--destructive-foreground));
}

.badge-outline {
    background-color: transparent;
    border: 1px solid hsl(var(--border));
    color: hsl(var(--foreground));
}

/* Table */
.table-container {
    overflow-x: auto;
    border-radius: var(--radius);
    border: 1px solid hsl(var(--border));
}

.table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.875rem;
}

.table thead {
    background-color: hsl(var(--muted));
}

.table th {
    padding: 0.75rem 1rem;
    text-align: left;
    font-weight: 600;
    color: hsl(var(--muted-foreground));
    border-bottom: 1px solid hsl(var(--border));
}

.table td {
    padding: 0.75rem 1rem;
    border-bottom: 1px solid hsl(var(--border));
}

.table tbody tr:hover {
    background-color: hsl(var(--muted) / 0.5);
}

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

/* Alert */
.alert {
    padding: 1rem;
    border-radius: var(--radius);
    border: 1px solid hsl(var(--border));
    margin-bottom: 1rem;
}

.alert-info {
    background-color: hsl(330 100% 97%);
    border-color: hsl(330 81% 85%);
    color: hsl(330 81% 30%);
}

.dark .alert-info {
    background-color: hsl(330 40% 15%);
    border-color: hsl(330 40% 25%);
    color: hsl(330 81% 85%);
}

.alert-success {
    background-color: hsl(142.1 76.2% 36.3% / 0.1);
    border-color: hsl(142.1 76.2% 36.3% / 0.3);
}

.alert-warning {
    background-color: hsl(47.9 95.8% 53.1% / 0.1);
    border-color: hsl(47.9 95.8% 53.1% / 0.3);
}

.alert-error {
    background-color: hsl(var(--destructive) / 0.1);
    border-color: hsl(var(--destructive) / 0.3);
}

/* Modal */
.modal-overlay {
    position: fixed;
    inset: 0;
    background-color: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
    z-index: 50;
    display: none;
    align-items: center;
    justify-content: center;
    animation: fadeIn 0.2s ease;
}

.modal-overlay.active {
    display: flex;
}

.modal-content {
    background-color: hsl(var(--card));
    border: 1px solid hsl(var(--border));
    border-radius: calc(var(--radius) + 4px);
    box-shadow: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    max-width: 32rem;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    animation: slideUp 0.2s ease;
}

.modal-header {
    padding: 1.5rem;
    border-bottom: 1px solid hsl(var(--border));
}

.modal-title {
    font-size: 1.25rem;
    font-weight: 600;
}

.modal-body {
    padding: 1.5rem;
}

.modal-footer {
    padding: 1.5rem;
    border-top: 1px solid hsl(var(--border));
    display: flex;
    justify-content: flex-end;
    gap: 0.75rem;
}

/* Form Group */
.form-group {
    margin-bottom: 1.25rem;
}

.form-group:last-child {
    margin-bottom: 0;
}

/* Grid */
.grid {
    display: grid;
    gap: 1.5rem;
}

.grid-cols-2 {
    grid-template-columns: repeat(2, 1fr);
}

.grid-cols-3 {
    grid-template-columns: repeat(3, 1fr);
}

.grid-cols-4 {
    grid-template-columns: repeat(4, 1fr);
}

/* Stats Card */
.stats-card {
    background-color: hsl(var(--card));
    border: 1px solid hsl(var(--border));
    border-radius: calc(var(--radius) + 2px);
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

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

.stats-card-title {
    font-size: 0.875rem;
    font-weight: 500;
    color: hsl(var(--muted-foreground));
}

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

.stats-card-trend {
    font-size: 0.875rem;
    color: hsl(var(--muted-foreground));
}

/* Animations */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideIn {
    from { transform: translateX(100%); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}

@keyframes fadeOut {
    from { opacity: 1; }
    to { opacity: 0; }
}

/* Utilities */
.hidden {
    display: none !important;
}

.flex {
    display: flex;
}

.items-center {
    align-items: center;
}

.justify-between {
    justify-content: space-between;
}

.gap-2 {
    gap: 0.5rem;
}

.gap-4 {
    gap: 1rem;
}

.mt-1 {
    margin-top: 0.25rem;
}

.mt-2 {
    margin-top: 0.5rem;
}

.mb-3 {
    margin-bottom: 0.75rem;
}

.mb-4 {
    margin-bottom: 1rem;
}

.mb-6 {
    margin-bottom: 1.5rem;
}

.text-sm {
    font-size: 0.875rem;
}

.text-center {
    text-align: center;
}

.text-muted {
    color: hsl(var(--muted-foreground));
}

.font-medium {
    font-weight: 500;
}

.font-semibold {
    font-weight: 600;
}

.w-full {
    width: 100%;
}

code {
    background-color: hsl(var(--muted));
    padding: 0.125rem 0.25rem;
    border-radius: 0.25rem;
    font-size: 0.875em;
    font-family: 'Courier New', monospace;
}

/* Tab Content */
.tab-content {
    display: none;
}

.tab-content.active {
    display: flex;
    flex-direction: column;
    flex: 1;
}

/* Responsive */
@media (max-width: 1024px) {
    .sidebar {
        transform: translateX(-100%);
        transition: transform 0.3s;
    }

    .sidebar.mobile-open {
        transform: translateX(0);
    }

    .main-content {
        margin-left: 0;
    }

    .grid-cols-2,
    .grid-cols-3,
    .grid-cols-4 {
        grid-template-columns: 1fr;
    }
}

/* ===== Loading Overlay ===== */
#loadingOverlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
    z-index: 9999;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    opacity: 0;
    transition: opacity 0.2s;
    pointer-events: none;
}

#loadingOverlay.active {
    opacity: 1;
    pointer-events: auto;
}

.loading-spinner {
    width: 48px;
    height: 48px;
    border: 3px solid rgba(255, 255, 255, 0.2);
    border-top-color: hsl(var(--primary));
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

.loading-text {
    margin-top: 1rem;
    color: white;
    font-size: 0.875rem;
    font-weight: 500;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* ===== Item List Styles ===== */
#tokenListView,
#channelListView,
#pricingContent {
    display: flex;
    flex-direction: column;
    flex: 1;
}

.item-list {
    flex: 1;
    overflow-y: auto;
    padding: 1.5rem;
    padding-right: 1.5rem;
    min-height: 0;
}

.item-list::-webkit-scrollbar {
    width: 6px;
}

.item-list::-webkit-scrollbar-track {
    background: hsl(var(--muted));
    border-radius: 3px;
}

.item-list::-webkit-scrollbar-thumb {
    background: hsl(var(--border));
    border-radius: 3px;
}

.item-list::-webkit-scrollbar-thumb:hover {
    background: hsl(var(--muted-foreground));
}

.item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 18px 20px;
    border: 1px solid hsl(var(--border));
    border-radius: var(--radius);
    margin-bottom: 12px;
    background: hsl(var(--card));
    transition: all 0.2s ease;
}

.item:hover {
    border-color: hsl(var(--primary));
    box-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1);
    transform: translateX(4px);
}

.item-info {
    flex: 1;
    min-width: 0;
}

.item-key {
    font-weight: 600;
    color: hsl(var(--foreground));
    margin-bottom: 6px;
    font-size: 15px;
}

.item-details {
    font-size: 13px;
    color: hsl(var(--muted-foreground));
    line-height: 1.5;
}

.actions {
    display: flex;
    gap: 8px;
    flex-shrink: 0;
}

.btn-danger {
    background-color: hsl(var(--destructive));
    color: hsl(var(--destructive-foreground));
}

.btn-danger:hover {
    opacity: 0.9;
}