:root {
    --bg-app: #0f172a;
    --bg-panel: #1e293b;
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --accent-color: #3b82f6;
    --accent-glow: rgba(59, 130, 246, 0.5);
    --success-color: #10b981;
    --danger-color: #ef4444;
    --warning-color: #f59e0b;
    --border-color: #334155;
    --font-sans: 'Inter', system-ui, sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
}

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

body {
    background-color: var(--bg-app);
    color: var(--text-primary);
    font-family: var(--font-sans);
    height: 100vh;
    overflow: hidden;
}

.app-container {
    display: flex;
    flex-direction: column;
    height: 100%;
    padding: 1rem;
    gap: 1rem;
}

/* Header */
.app-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem 1.5rem;
    background: var(--bg-panel);
    border-radius: 12px;
    border: 1px solid var(--border-color);
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

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

.logo-icon {
    background: linear-gradient(135deg, var(--accent-color), #8b5cf6);
    color: white;
    font-weight: 700;
    padding: 0.4rem 0.6rem;
    border-radius: 8px;
    font-family: var(--font-mono);
}

h1 {
    font-size: 1.25rem;
    font-weight: 600;
    letter-spacing: -0.02em;
}

.highlight {
    color: var(--accent-color);
}

.header-controls {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.status-ready {
    color: var(--success-color);
    font-weight: 600;
    font-size: 0.875rem;
}

.status-running {
    color: var(--warning-color);
    animation: pulse 2s infinite;
}

.primary-btn {
    background: var(--accent-color);
    color: white;
    border: none;
    padding: 0.5rem 1rem;
    border-radius: 6px;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.2s;
    box-shadow: 0 0 10px var(--accent-glow);
}

.primary-btn:hover {
    filter: brightness(1.1);
    transform: translateY(-1px);
}

.primary-btn:active {
    transform: translateY(0);
}

.primary-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    filter: grayscale(1);
}

/* Grid Layout - Responsive */
.dashboard-grid {
    display: grid;
    grid-template-columns: 350px 1fr;
    grid-template-rows: auto 1fr;
    gap: 1.5rem;
    flex: 1;
    overflow: hidden;
    padding: 0 0.5rem;
}

@media (max-width: 1024px) {
    .dashboard-grid {
        grid-template-columns: 1fr;
        grid-template-rows: auto auto 1fr;
        overflow-y: auto;
    }

    .scoreboard-panel {
        grid-row: 1;
    }

    .details-panel {
        grid-row: 2;
        height: auto;
        min-height: 500px;
    }

    .timeline-panel {
        grid-row: 3;
        max-height: 300px;
    }

    body {
        overflow: auto;
    }

    .app-container {
        height: auto;
        min-height: 100vh;
    }
}

.panel {
    background: var(--bg-panel);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

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

.panel-header h2 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Scoreboard (Top Full Width) */
.scoreboard-panel {
    grid-column: 1 / -1;
    grid-row: 1;
}

.live-badge {
    background: rgba(239, 68, 68, 0.2);
    color: var(--danger-color);
    font-size: 0.75rem;
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
    font-weight: 700;
    animation: flash 1.5s infinite;
}

.metrics-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1px;
    background: var(--border-color);
    /* Gap filler */
}

.metric-card {
    background: var(--bg-panel);
    padding: 1rem 1.5rem;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.metric-label {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: 0.25rem;
}

.metric-value-container {
    display: flex;
    align-items: baseline;
    gap: 0.2rem;
}

.metric-value {
    font-size: 1.75rem;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.metric-unit {
    font-size: 1rem;
    color: var(--text-secondary);
}

.metric-sub {
    font-size: 0.75rem;
    color: var(--text-secondary);
    margin-top: 0.25rem;
}

/* Timeline (Left) */
.timeline-panel {
    grid-column: 1;
    grid-row: 2;
}

.timeline-container {
    padding: 1rem;
    overflow-y: auto;
    flex: 1;
}

.timeline-item {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.5rem;
    position: relative;
}

.timeline-item:not(:last-child)::after {
    content: '';
    position: absolute;
    left: 11px;
    top: 24px;
    bottom: -24px;
    width: 2px;
    background: var(--border-color);
}

.timeline-icon {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: var(--border-color);
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 0.75rem;
    flex-shrink: 0;
    z-index: 1;
}

.timeline-item.success .timeline-icon {
    background: var(--success-color);
    color: #000;
}

.timeline-item.fail .timeline-icon {
    background: var(--danger-color);
    color: white;
}

.timeline-item.info .timeline-icon {
    background: var(--accent-color);
    color: white;
}

.timeline-content h4 {
    font-size: 0.9rem;
    margin-bottom: 0.2rem;
}

.timeline-content p {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

/* Details (Right) */
.details-panel {
    grid-column: 2;
    grid-row: 2;
}

.tabs {
    display: flex;
    gap: 0.5rem;
}

.tab-btn {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    padding: 0.25rem 0.5rem;
    cursor: pointer;
    font-size: 0.85rem;
}

.tab-btn.active {
    color: var(--accent-color);
    border-bottom: 2px solid var(--accent-color);
}

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

.tab-content {
    padding: 1rem;
    overflow-y: auto;
    flex: 1;
    display: none;
}

.tab-content.active {
    display: block;
}

.empty-state {
    color: var(--text-secondary);
    text-align: center;
    padding: 2rem;
    font-style: italic;
}

/* Findings List */
.findings-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.finding-card {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 1rem;
}

.finding-card.fail {
    border-left: 4px solid var(--danger-color);
}

.finding-card.pass {
    border-left: 4px solid var(--success-color);
}

.finding-header {
    display: flex;
    justify-content: space-between;
    margin-bottom: 0.5rem;
}

.finding-id {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.finding-status {
    font-weight: 700;
    font-size: 0.8rem;
    text-transform: uppercase;
}

.status-fail {
    color: var(--danger-color);
}

.status-pass {
    color: var(--success-color);
}

.finding-detail {
    font-size: 0.9rem;
    line-height: 1.4;
    color: var(--text-primary);
}

/* Diff Viewer */
.diff-viewer {
    background: #111;
    padding: 1rem;
    border-radius: 6px;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    overflow-x: auto;
}

.language-diff {
    white-space: pre;
}

/* Ledger */
.ledger-export-area {
    text-align: center;
    padding: 2rem;
}

.secondary-btn {
    background: transparent;
    border: 1px solid var(--accent-color);
    color: var(--accent-color);
    padding: 0.5rem 1rem;
    border-radius: 6px;
    margin-top: 1rem;
    cursor: pointer;
    transition: all 0.2s;
}

.secondary-btn:hover:not(:disabled) {
    background: rgba(59, 130, 246, 0.1);
}

.secondary-btn:disabled {
    border-color: var(--border-color);
    color: var(--text-secondary);
    cursor: not-allowed;
}

.json-preview {
    margin-top: 1.5rem;
    text-align: left;
    background: #111;
    padding: 1rem;
    border-radius: 8px;
    max-height: 300px;
    overflow-y: auto;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--text-secondary);
}

/* Animations */
@keyframes pulse {
    0% {
        opacity: 1;
    }

    50% {
        opacity: 0.6;
    }

    100% {
        opacity: 1;
    }
}

@keyframes flash {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0;
    }
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-app);
}

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-secondary);
}

.hidden {
    display: none !important;
}

.mode-switch {
    display: flex;
    background: #111;
    border-radius: 6px;
    padding: 2px;
    margin-right: 1rem;
}

.mode-btn {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    padding: 0.4rem 0.8rem;
    font-size: 0.8rem;
    cursor: pointer;
    border-radius: 4px;
    font-weight: 600;
}

.mode-btn.active {
    background: var(--bg-panel);
    color: var(--text-primary);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
}

.playground-toolbar {
    background: var(--bg-panel);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1rem;
    margin-bottom: 0px;
    animation: slideDown 0.3s ease-out;
}

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

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

.pg-controls {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.pack-select {
    padding: 0.5rem;
    border-radius: 6px;
    background: #0f172a;
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    font-family: var(--font-mono);
    font-size: 0.9rem;
    min-width: 250px;
}

.step-group {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.pg-btn {
    background: var(--bg-app);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 0.6rem 1rem;
    border-radius: 8px;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.2s;
}

.pg-btn:hover:not(:disabled) {
    border-color: var(--accent-color);
    color: var(--text-primary);
}

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

.pg-btn.active-step {
    background: var(--accent-color);
    color: white;
    border-color: var(--accent-color);
    box-shadow: 0 0 15px rgba(59, 130, 246, 0.3);
}

.step-num {
    background: rgba(255, 255, 255, 0.1);
    width: 20px;
    height: 20px;
    display: flex;
    justify-content: center;
    align-items: center;
    border-radius: 50%;
    font-size: 0.7rem;
    font-weight: 700;
}

.step-connector {
    width: 20px;
    height: 2px;
    background: var(--border-color);
}

/* Toast Notifications */
.toast {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    background: var(--bg-panel);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 1rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.5);
    z-index: 1000;
    transform: translateY(20px);
    opacity: 0;
    transition: all 0.3s ease-out;
    max-width: 400px;
}

.toast.show {
    transform: translateY(0);
    opacity: 1;
}

.toast-message {
    font-size: 0.9rem;
    color: var(--text-primary);
}

.toast-error {
    border-left: 4px solid var(--danger-color);
}

.toast-info {
    border-left: 4px solid var(--accent-color);
}

.toast-action-btn {
    background: #334155;
    border: none;
    color: white;
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    font-size: 0.75rem;
    cursor: pointer;
    align-self: flex-end;
}

.toast-action-btn:hover {
    background: #475569;
}
.demo-toggle { display: flex; align-items: center; gap: 0.5rem; font-size: 0.8rem; color: var(--text-secondary); cursor: pointer; }
.demo-toggle input { cursor: pointer; }

.modality-badge { background: #334155; color: #94a3b8; padding: 4px 8px; border-radius: 4px; font-size: 0.75rem; font-weight: bold; transition: all 0.3s; }
.modality-badge.active { background: var(--accent-color); color: white; box-shadow: 0 0 8px var(--accent-glow); }