:root {
    --primary: #8B5CF6;
    --primary-hover: #7C3AED;
    --secondary: #A78BFA;
    --accent: #F472B6;
    --bg: #0F0A1A;
    --bg-surface: #1A1425;
    --bg-surface-hover: #241D30;
    --text-primary: #FFFFFF;
    --text-secondary: #9CA3AF;
    --border: #2D243F;
    --radius: 12px;

    /* Status Colors */
    --success: #10B981;
    --warning: #F59E0B;
    --danger: #EF4444;
}

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

body {
    font-family: 'Inter', system-ui, sans-serif;
    background-color: var(--bg);
    color: var(--text-primary);
    line-height: 1.5;
    height: 100vh;
    overflow: hidden;
}

code,
textarea {
    font-family: 'JetBrains Mono', monospace;
}

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

/* Header */
.glass-header {
    background: rgba(15, 10, 26, 0.8);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
    padding: 1rem 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    z-index: 10;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--primary);
    text-shadow: 0 0 10px rgba(139, 92, 246, 0.3);
}

.actions {
    display: flex;
    gap: 0.75rem;
}

/* Buttons */
.btn {
    padding: 0.5rem 1rem;
    border-radius: var(--radius);
    font-weight: 500;
    font-size: 0.875rem;
    cursor: pointer;
    transition: all 0.2s ease;
    border: none;
    font-family: inherit;
}

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

.btn-ghost {
    background: transparent;
    color: var(--text-secondary);
}

.btn-ghost:hover:not(:disabled) {
    background: var(--bg-surface);
    color: var(--text-primary);
}

.btn-outline {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text-primary);
}

.btn-outline:hover:not(:disabled) {
    border-color: var(--primary);
    background: rgba(139, 92, 246, 0.1);
}

.btn-primary {
    background: var(--primary);
    color: #fff;
}

.btn-primary:hover:not(:disabled) {
    background: var(--primary-hover);
    box-shadow: 0 0 15px rgba(139, 92, 246, 0.4);
}

.btn-icon {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 0.5rem;
}

.btn-icon:hover {
    color: var(--text-primary);
}

/* Main Layout */
.main-content {
    display: flex;
    flex: 1;
    overflow: hidden;
}

.panel {
    flex: 1;
    display: flex;
    flex-direction: column;
    border-right: 1px solid var(--border);
}

.panel:last-child {
    border-right: none;
}

.panel-header {
    padding: 1rem 1.5rem;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    gap: 1rem;
    background: var(--bg-surface);
}

.panel-header h2 {
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-secondary);
}

/* Textarea styling */
.editor-container {
    flex: 1;
    position: relative;
}

#cssInput {
    width: 100%;
    height: 100%;
    background: transparent;
    border: none;
    padding: 1.5rem;
    color: var(--secondary);
    resize: none;
    outline: none;
    font-size: 0.875rem;
    line-height: 1.6;
}

#cssInput::placeholder {
    color: #374151;
}

/* Stats & Badges */
.badge {
    background: var(--bg-surface);
    border: 1px solid var(--border);
    padding: 0.25rem 0.5rem;
    border-radius: 6px;
    font-size: 0.75rem;
    font-weight: 500;
    font-family: 'JetBrains Mono', monospace;
}

.stats-overview {
    display: flex;
    gap: 0.5rem;
}

.stat-pill {
    background: rgba(139, 92, 246, 0.1);
    color: var(--secondary);
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.25rem;
    border: 1px solid rgba(139, 92, 246, 0.2);
}

.stat-pill.warning {
    background: rgba(245, 158, 11, 0.1);
    color: var(--warning);
    border-color: rgba(245, 158, 11, 0.2);
}

/* Results */
.results-container {
    flex: 1;
    overflow-y: auto;
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.empty-state {
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    text-align: center;
}

.es-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    opacity: 0.5;
}

.empty-state h3 {
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    font-weight: 500;
}

/* Card */
.var-card {
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.25rem;
    transition: transform 0.2s, border-color 0.2s;
    animation: fadeIn 0.3s ease-out forwards;
}

.var-card:hover {
    border-color: var(--primary);
    transform: translateY(-2px);
}

.var-card.unused {
    border-color: rgba(245, 158, 11, 0.3);
}

.var-card.unused .usage-badge {
    color: var(--warning);
    border-color: rgba(245, 158, 11, 0.3);
    background: rgba(245, 158, 11, 0.05);
}

.var-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 1rem;
}

.var-name {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-family: 'JetBrains Mono', monospace;
    font-weight: 600;
    font-size: 1rem;
    color: var(--primary);
}

.color-swatch {
    width: 16px;
    height: 16px;
    border-radius: 4px;
    border: 1px solid var(--border);
    display: none;
}

.var-badges {
    display: flex;
    gap: 0.5rem;
    align-items: center;
    flex-wrap: wrap;
}

.var-body {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.var-row {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.var-row.hidden {
    display: none;
}

.var-label {
    font-size: 0.75rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.var-value,
.var-resolved {
    background: rgba(0, 0, 0, 0.2);
    padding: 0.5rem;
    border-radius: 6px;
    font-size: 0.875rem;
    color: var(--text-primary);
    word-break: break-all;
}

.deps-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.dep-tag {
    background: rgba(244, 114, 182, 0.1);
    color: var(--accent);
    border: 1px solid rgba(244, 114, 182, 0.2);
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    font-size: 0.75rem;
    font-family: 'JetBrains Mono', monospace;
}

/* Modal */
.modal {
    position: fixed;
    inset: 0;
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
}

.modal.hidden {
    display: none;
}

.modal-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
}

.modal-content {
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    width: 100%;
    max-width: 600px;
    position: relative;
    z-index: 101;
    display: flex;
    flex-direction: column;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
}

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

.modal-body {
    padding: 1.5rem;
}

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

#exportTextarea {
    width: 100%;
    height: 300px;
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 1rem;
    color: var(--text-primary);
    resize: none;
    outline: none;
}

.text-xs {
    font-size: 0.75rem;
}

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

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

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@media (max-width: 768px) {
    .main-content {
        flex-direction: column;
    }

    .panel {
        border-right: none;
        border-bottom: 1px solid var(--border);
        flex: none;
        height: 50%;
    }
}