/* ROWM Notebook — Main Stylesheet */

:root {
    --color-dark: #0a0e27;
    --color-navy: #1a2654;
    --color-cyan: #00d9ff;
    --color-gold: #ffd700;
    --color-magenta: #d946ef;
    --color-text: #e0e0e0;
    --color-text-secondary: #a0a0a0;
    --color-border: #2a3654;
    --color-success: #10b981;
    --color-error: #ef4444;

    --font-mono: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
    --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 300ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);
}

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

html, body {
    width: 100%;
    height: 100%;
    background: var(--color-dark);
    color: var(--color-text);
    font-family: var(--font-sans);
    font-size: 14px;
    line-height: 1.6;
    overflow: hidden;
}

/* LAYOUT: Grid */
#notebook-container {
    display: grid;
    grid-template-rows: 60px 1fr 40px;
    grid-template-columns: 250px 1fr 250px;
    height: 100vh;
    gap: 1px;
    background: var(--color-border);
}

#notebook-header {
    grid-column: 1 / -1;
    background: var(--color-navy);
    border-bottom: 1px solid var(--color-border);
    padding: 12px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

#notebook-header h1 {
    font-size: 18px;
    font-weight: 600;
    letter-spacing: -0.5px;
}

#notebook-header .subtitle {
    font-size: 12px;
    color: var(--color-text-secondary);
    margin-top: 2px;
}

.header-controls {
    display: flex;
    gap: 8px;
}

#notebook-main {
    display: grid;
    grid-template-columns: 250px 1fr 250px;
    gap: 1px;
    background: var(--color-border);
}

#notebook-sidebar {
    background: var(--color-navy);
    border-right: 1px solid var(--color-border);
    padding: 16px;
    overflow-y: auto;
    font-size: 12px;
}

#notebook-sidebar h3 {
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    color: var(--color-cyan);
    margin-bottom: 8px;
    letter-spacing: 1px;
}

#notebook-sidebar section {
    margin-bottom: 16px;
}

#notebook-cells {
    background: var(--color-dark);
    overflow-y: auto;
    padding: 20px;
}

#ledger-panel {
    background: var(--color-navy);
    border-left: 1px solid var(--color-border);
    padding: 16px;
    overflow-y: auto;
    font-size: 12px;
}

#ledger-panel h3 {
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    color: var(--color-gold);
    margin-bottom: 8px;
    letter-spacing: 1px;
}

#notebook-footer {
    grid-column: 1 / -1;
    background: var(--color-navy);
    border-top: 1px solid var(--color-border);
    padding: 8px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 12px;
    color: var(--color-text-secondary);
}

/* CELLS */
.notebook-cell {
    background: var(--color-navy);
    border: 1px solid var(--color-border);
    border-radius: 4px;
    margin-bottom: 12px;
    overflow: hidden;
    transition: box-shadow var(--transition-normal);
}

.notebook-cell:hover {
    box-shadow: 0 0 16px rgba(0, 217, 255, 0.1);
}

.notebook-cell:focus-within {
    box-shadow: 0 0 16px rgba(0, 217, 255, 0.2);
    border-color: var(--color-cyan);
}

.cell-index {
    background: var(--color-dark);
    padding: 8px 12px;
    font-size: 11px;
    color: var(--color-text-secondary);
    border-bottom: 1px solid var(--color-border);
    font-family: var(--font-mono);
}

.cell-editor {
    padding: 12px;
}

.cell-editor textarea,
.cell-editor input {
    width: 100%;
    background: var(--color-dark);
    border: none;
    color: var(--color-text);
    font-family: var(--font-mono);
    font-size: 13px;
    padding: 8px;
    resize: vertical;
    min-height: 60px;
}

.cell-editor textarea:focus,
.cell-editor input:focus {
    outline: none;
    background: rgba(0, 217, 255, 0.02);
}

.cell-output {
    background: var(--color-dark);
    border-top: 1px solid var(--color-border);
    padding: 12px;
    font-family: var(--font-mono);
    font-size: 12px;
    max-height: 300px;
    overflow-y: auto;
}

.cell-output.success {
    border-left: 3px solid var(--color-success);
}

.cell-output.error {
    border-left: 3px solid var(--color-error);
    color: var(--color-error);
}

.cell-receipt {
    background: rgba(255, 215, 0, 0.05);
    border-top: 1px dashed var(--color-gold);
    padding: 8px 12px;
    font-size: 11px;
    color: var(--color-gold);
    font-family: var(--font-mono);
    cursor: pointer;
    transition: background var(--transition-fast);
}

.cell-receipt:hover {
    background: rgba(255, 215, 0, 0.1);
}

/* BUTTONS */
.btn {
    padding: 8px 16px;
    border: 1px solid var(--color-border);
    border-radius: 4px;
    font-family: var(--font-sans);
    font-size: 12px;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.btn-primary {
    background: var(--color-cyan);
    color: var(--color-dark);
    border-color: var(--color-cyan);
}

.btn-primary:hover {
    background: rgba(0, 217, 255, 0.9);
    box-shadow: 0 0 12px rgba(0, 217, 255, 0.3);
}

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

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

.btn-tertiary {
    background: transparent;
    color: var(--color-text-secondary);
    border: none;
    padding: 8px 12px;
}

.btn-tertiary:hover {
    color: var(--color-cyan);
}

/* DEPENDENCY GRAPH */
#dependency-svg {
    width: 100%;
    border: 1px solid var(--color-border);
    border-radius: 4px;
    background: rgba(10, 14, 39, 0.5);
}

#dependency-svg line {
    stroke: var(--color-cyan);
    stroke-width: 1;
    opacity: 0.5;
}

#dependency-svg circle {
    fill: var(--color-navy);
    stroke: var(--color-cyan);
    stroke-width: 1;
}

#dependency-svg text {
    font-family: var(--font-mono);
    font-size: 10px;
    fill: var(--color-text-secondary);
    text-anchor: middle;
}

/* METADATA LIST */
#metadata-list, #trust-list, #receipt-chain-view {
    font-size: 11px;
    line-height: 1.8;
}

#metadata-list div, #trust-list div, #receipt-chain-view div {
    padding: 4px 0;
    border-bottom: 1px solid rgba(0, 217, 255, 0.1);
}

#metadata-list span, #trust-list span, #receipt-chain-view span {
    color: var(--color-cyan);
    font-weight: 500;
}

/* RESPONSIVE */
@media (max-width: 1400px) {
    #notebook-container {
        grid-template-columns: 200px 1fr 200px;
    }
}

@media (max-width: 1000px) {
    #notebook-container {
        grid-template-columns: 1fr;
    }

    #notebook-sidebar,
    #ledger-panel {
        display: none;
    }
}

@media (max-width: 768px) {
    #notebook-header {
        flex-direction: column;
        gap: 8px;
        padding: 8px 12px;
    }

    #notebook-header h1 {
        font-size: 16px;
    }

    .header-controls {
        width: 100%;
        justify-content: flex-end;
    }

    #notebook-cells {
        padding: 12px;
    }

    .notebook-cell {
        margin-bottom: 8px;
    }
}

/* REDUCED MOTION */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

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

::-webkit-scrollbar-track {
    background: var(--color-dark);
}

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

::-webkit-scrollbar-thumb:hover {
    background: var(--color-cyan);
}