:root {
    --bg-color: #000000;
    --panel-bg: rgba(255, 255, 255, 0.03);
    --panel-border: rgba(255, 255, 255, 0.1);
    --text-primary: #e2e8f0;
    --text-secondary: #94a3b8;
    --accent: #6366f1;
    --accent-hover: #4f46e5;
    
    /* Token colors: Pastel vibrant colors suitable for dark mode */
    --token-color-1: rgba(239, 68, 68, 0.3);   /* Red */
    --token-color-2: rgba(249, 115, 22, 0.3);  /* Orange */
    --token-color-3: rgba(234, 179, 8, 0.3);   /* Yellow */
    --token-color-4: rgba(34, 197, 94, 0.3);   /* Green */
    --token-color-5: rgba(6, 182, 212, 0.3);   /* Cyan */
    --token-color-6: rgba(59, 130, 246, 0.3);  /* Blue */
    --token-color-7: rgba(168, 85, 247, 0.3);  /* Purple */
    --token-color-8: rgba(236, 72, 153, 0.3);  /* Pink */
}

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

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-primary);
    line-height: 1.5;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.app-container {
    max-width: 1400px;
    margin: 0 auto;
    width: 100%;
    padding: 2rem;
    display: flex;
    flex-direction: column;
    flex: 1;
}

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--panel-border);
}

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

.logo svg {
    color: var(--accent);
}

h1 {
    font-size: 1.5rem;
    font-weight: 600;
    letter-spacing: -0.025em;
}

.btn {
    background-color: var(--panel-bg);
    border: 1px solid var(--panel-border);
    color: var(--text-primary);
    padding: 0.5rem 1rem;
    border-radius: 0.5rem;
    font-family: inherit;
    font-size: 0.875rem;
    cursor: pointer;
    transition: all 0.2s;
}

.btn:hover {
    background-color: var(--panel-border);
}

main {
    display: flex;
    flex-direction: column;
    flex: 1;
    position: relative;
    gap: 1.5rem;
}

.workspace {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    flex: 1;
    min-height: 400px;
}

.panel {
    background: var(--panel-bg);
    border: 1px solid var(--panel-border);
    border-radius: 1rem;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    backdrop-filter: blur(10px);
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
}

textarea {
    width: 100%;
    flex: 1;
    background: transparent;
    border: none;
    color: var(--text-primary);
    padding: 1.5rem;
    font-family: 'JetBrains Mono', monospace;
    font-size: 1rem;
    resize: none;
    outline: none;
}

textarea::placeholder {
    color: var(--text-secondary);
}

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

.token-viz {
    padding: 1.5rem;
    flex: 1;
    font-family: 'JetBrains Mono', monospace;
    font-size: 1rem;
    line-height: 1.8;
    white-space: pre-wrap;
    word-break: break-all;
    overflow-y: auto;
}

.resizer {
    height: 6px;
    background-color: var(--panel-bg);
    border-top: 1px solid var(--panel-border);
    border-bottom: 1px solid var(--panel-border);
    cursor: row-resize;
    transition: background-color 0.2s, border-color 0.2s;
    flex-shrink: 0;
}

.resizer:hover, .resizer.resizing {
    background-color: var(--accent);
    border-color: var(--accent);
}

.token-span {
    display: inline;
    border-radius: 3px;
    padding: 0.1rem 0;
    transition: filter 0.2s;
    cursor: default;
}

.token-span:hover {
    filter: brightness(1.3);
}

.token-list-container {
    height: 150px;
    background: rgba(0, 0, 0, 0.2);
    display: flex;
    flex-direction: column;
}

.token-list-container h3 {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-secondary);
    padding: 0.75rem 1rem;
    border-bottom: 1px solid var(--panel-border);
}

.token-ids-list {
    padding: 1rem;
    overflow-y: auto;
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    align-content: flex-start;
}

.token-id-chip {
    background: var(--panel-border);
    padding: 0.2rem 0.5rem;
    border-radius: 0.25rem;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.stats-bar {
    display: flex;
    gap: 2rem;
    padding: 1rem 1.5rem;
    background: var(--panel-bg);
    border: 1px solid var(--panel-border);
    border-radius: 0.75rem;
}

.stat {
    display: flex;
    align-items: baseline;
    gap: 0.5rem;
}

.stat-label {
    color: var(--text-secondary);
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.stat-value {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
}

.loading-overlay {
    position: absolute;
    inset: 0;
    background: rgba(15, 17, 26, 0.8);
    backdrop-filter: blur(4px);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 10;
    border-radius: 1rem;
    gap: 1rem;
    transition: opacity 0.3s;
}

.loading-overlay.hidden {
    opacity: 0;
    pointer-events: none;
}

.spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--panel-border);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

@media (max-width: 768px) {
    .workspace {
        grid-template-columns: 1fr;
    }
}

.dropdown-container {
    position: relative;
    display: inline-block;
    margin-right: 0.5rem;
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    margin-top: 0.5rem;
    background: var(--panel-bg);
    border: 1px solid var(--panel-border);
    border-radius: 0.5rem;
    min-width: 180px;
    z-index: 100;
    backdrop-filter: blur(10px);
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    overflow: hidden;
}

.dropdown-menu.hidden {
    display: none;
}

.dropdown-item {
    padding: 0.75rem 1rem;
    cursor: pointer;
    font-size: 0.875rem;
    color: var(--text-primary);
    transition: background-color 0.2s;
}

.dropdown-item:hover {
    background-color: var(--panel-border);
}

#comparison-container.hidden {
    display: none;
}

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

.comparison-header h3 {
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-secondary);
}