/* Custom Styling for Recursive Self-Injury Paper & Simulator */

:root {
    --bg-dark: #faf9f5;         /* Official Anthropic light background */
    --bg-card: #e8e6dc;         /* Official Anthropic light gray for cards */
    --bg-card-hover: #dbd9cd;   /* Card hover background */
    --text-primary: #141413;    /* Official Anthropic primary dark text */
    --text-secondary: #706f68;  /* Secondary text color */
    --border-color: #b0aea5;    /* Official Anthropic mid gray for borders */
    
    /* Accents - Official Anthropic accent colors */
    --accent-blue: #6a9bcc;     /* Brand blue */
    --accent-purple: #9b7ba6;   
    --accent-amber: #d97757;    /* Brand orange */
    --accent-red: #d97757;      /* Brand orange */
    --accent-green: #788c5d;    /* Brand green */

    /* Cardigan Visual variables */
    --cardigan-scale: 1;
    --knit-thickness: 1px;
    --knit-gap: 8px;
    --cardigan-color: #788c5d;  /* Starts with brand green/olive grey, gets warmer */
}

/* Reset and base */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    background-color: var(--bg-dark);
    color: var(--text-primary);
    font-family: 'Poppins', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    line-height: 1.6;
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
}

/* Header style - arXiv mimicry with premium design */
.arxiv-header {
    background-color: rgba(250, 249, 245, 0.85);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
    padding: 10px 0;
}

.arxiv-header-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.arxiv-logo-group {
    display: flex;
    align-items: baseline;
    gap: 12px;
}

.arxiv-brand {
    font-family: 'Lora', 'Georgia', serif;
    font-weight: 700;
    font-size: 1.5rem;
    color: var(--accent-red);
    letter-spacing: -0.5px;
}

.arxiv-id {
    font-family: 'Fira Code', monospace;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.arxiv-actions {
    display: flex;
    gap: 10px;
}

.btn-action {
    background: var(--bg-card);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    padding: 6px 12px;
    border-radius: 6px;
    font-size: 0.85rem;
    display: flex;
    align-items: center;
    gap: 6px;
    cursor: pointer;
    transition: all 0.2s ease;
    text-decoration: none;
}

.btn-action:hover {
    background: var(--bg-card-hover);
    border-color: var(--accent-red);
    transform: translateY(-1px);
}

/* Layout */
.app-layout {
    max-width: 1200px;
    margin: 30px auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: 320px 1fr;
    gap: 40px;
}

/* Sidebar styling */
.sidebar {
    position: relative;
}

.sidebar-sticky {
    position: sticky;
    top: 80px;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.nav-card, .sim-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    padding: 20px;
    box-shadow: 0 4px 16px rgba(25, 24, 22, 0.04);
}

.nav-card h3, .sim-card-header h4 {
    font-size: 0.95rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 15px;
    color: var(--text-secondary);
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 8px;
}

.paper-nav {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    padding: 8px 12px;
    border-radius: 0px; /* Perfectly flat, no curved parenthetical shapes! */
    transition: all 0.2s ease;
    border-left: 2px solid transparent;
}

.nav-link:hover {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.02);
}

.nav-link.active {
    color: var(--accent-red);
    background: rgba(220, 94, 63, 0.05);
    border-left-color: var(--accent-red);
    font-weight: 600;
}

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

.nav-link.highlight:hover {
    background: rgba(224, 159, 62, 0.02);
}

.nav-link.highlight.active {
    color: var(--accent-amber);
    border-left-color: var(--accent-amber);
    background: rgba(224, 159, 62, 0.05);
    font-weight: 600;
}

/* Simulator Widget */
.sim-card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
}

.sim-card-header h4 {
    margin-bottom: 0;
    border-bottom: none;
    padding-bottom: 0;
}

.live-indicator {
    background: var(--border-color);
    color: var(--text-primary);
    font-size: 0.7rem;
    padding: 2px 6px;
    border-radius: 2px;
    font-weight: 600;
    letter-spacing: 0.5px;
}

.control-group {
    margin-bottom: 15px;
}

.control-group label {
    display: flex;
    justify-content: space-between;
    font-size: 0.85rem;
    margin-bottom: 6px;
    color: var(--text-primary);
}

.help-tooltip {
    background: var(--border-color);
    border-radius: 50%;
    width: 16px;
    height: 16px;
    display: inline-flex;
    justify-content: center;
    align-items: center;
    font-size: 0.7rem;
    cursor: help;
}

input[type="range"] {
    width: 100%;
    accent-color: var(--accent-red);
    background: var(--border-color);
    border-radius: 4px;
    height: 6px;
    outline: none;
}

/* Cardigan Visualizer CSS Component */
.cardigan-visualizer {
    height: 120px;
    margin: 15px 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-end;
    overflow: hidden;
    position: relative;
    border-radius: 4px;
    background: var(--bg-dark); /* clean warm cream paper background */
    border: 1px solid var(--border-color);
}

.cardigan-neck {
    width: 35px;
    height: 15px;
    background: #e2e8f0; /* skin-like tone */
    border-radius: 0 0 15px 15px;
    position: absolute;
    top: 20px;
    z-index: 1;
}

.cardigan-body {
    width: 80px;
    height: 80px;
    background-color: var(--cardigan-color);
    border-radius: 12px 12px 0 0;
    position: relative;
    transform: scale(var(--cardigan-scale));
    transform-origin: bottom center;
    transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
    box-shadow: 0 4px 10px rgba(0,0,0,0.3);
    border: 1px solid rgba(255,255,255,0.1);
}

.cardigan-collar {
    position: absolute;
    top: 0;
    left: 20px;
    right: 20px;
    height: 25px;
    border-left: 8px solid rgba(0,0,0,0.15);
    border-right: 8px solid rgba(0,0,0,0.15);
    border-bottom: 25px solid transparent;
    z-index: 2;
    transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

.cardigan-body.has-collar .cardigan-collar {
    left: 12px;
    right: 12px;
    height: 35px;
    border-left: 14px solid rgba(0,0,0,0.25);
    border-right: 14px solid rgba(0,0,0,0.25);
    border-bottom: 35px solid transparent;
    border-radius: 6px 6px 0 0; /* rounded thick shawl collar fold */
}

.cardigan-knit-pattern {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    opacity: 0.35;
    background-image: 
        repeating-linear-gradient(90deg, transparent, transparent var(--knit-gap), rgba(255,255,255,0.15) var(--knit-gap), rgba(255,255,255,0.15) calc(var(--knit-gap) + var(--knit-thickness))),
        repeating-linear-gradient(0deg, transparent, transparent var(--knit-gap), rgba(0,0,0,0.15) var(--knit-gap), rgba(0,0,0,0.15) calc(var(--knit-gap) + var(--knit-thickness)));
}

.cardigan-buttons {
    position: absolute;
    left: calc(50% - 3px);
    top: 30px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    z-index: 3;
}

.cardigan-buttons .button {
    width: 6px;
    height: 6px;
    background: #1e293b;
    border-radius: 50%;
    border: 1px solid rgba(255,255,255,0.3);
}

.sim-metrics {
    margin-top: 15px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    font-size: 0.85rem;
}

.sim-metrics .metric {
    display: flex;
    justify-content: space-between;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    padding-bottom: 4px;
}

.sim-metrics .label {
    color: var(--text-secondary);
}

.sim-metrics .value {
    font-family: 'Fira Code', monospace;
    font-weight: 600;
}

.alarm-level-low { color: var(--accent-green); }
.alarm-level-med { color: var(--accent-amber); }
.alarm-level-high { color: var(--accent-red); }

.sentiment-legendary { color: var(--accent-green); }
.sentiment-positive { color: var(--accent-blue); }
.sentiment-neutral { color: var(--text-secondary); }
.sentiment-bad { color: var(--accent-amber); }
.sentiment-critical { color: var(--accent-red); }


/* Main Paper Column styling */
.paper-content {
    background: #ffffff; /* pure white paper sheet */
    color: var(--text-primary);
    border-radius: 4px;
    border: 1px solid var(--border-color);
    padding: 60px 50px;
    box-shadow: 0 4px 20px rgba(20, 20, 19, 0.04);
    max-width: 820px;
    font-family: 'Lora', 'Georgia', serif;
}

.paper-title {
    font-family: 'Lora', 'Georgia', serif;
    font-size: 2.2rem;
    line-height: 1.25;
    font-weight: 700;
    text-align: center;
    color: var(--text-primary);
    margin-bottom: 25px;
}

.author-block {
    text-align: center;
    margin-bottom: 30px;
}

.author-name {
    font-size: 1.15rem;
    font-weight: 600;
    color: var(--text-primary);
}

.author-affiliation {
    font-size: 0.95rem;
    font-style: italic;
    color: var(--text-secondary);
}

.author-email {
    font-family: 'Fira Code', monospace;
    font-size: 0.85rem;
    margin-top: 4px;
    color: #6b7280;
}

.header-divider {
    border: 0;
    border-top: 1px solid #d1d5db;
    margin: 20px 0;
}

/* Abstract box */
.abstract-section {
    background: var(--bg-dark);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    padding: 24px;
    margin-bottom: 40px;
    font-size: 0.95rem;
    line-height: 1.6;
}

.abstract-section h2 {
    text-align: center;
    font-size: 1.1rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 12px;
    color: var(--text-primary);
}

/* Sections */
.paper-section {
    margin-bottom: 40px;
}

.paper-section h2 {
    font-family: 'Lora', serif;
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: var(--text-primary);
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 6px;
}

.paper-section h3 {
    font-size: 1.2rem;
    margin-top: 25px;
    margin-bottom: 10px;
    color: #1f2937;
}

.paper-section h4 {
    font-size: 1.05rem;
    margin-top: 15px;
    margin-bottom: 8px;
    color: #374151;
}

.paper-section p {
    margin-bottom: 18px;
    text-indent: 1.5em; /* Academic paragraph indent */
    text-align: justify;
}

.paper-section p:first-of-type {
    text-indent: 0; /* No indent on first paragraph of section */
}

.paper-section ul, .paper-section ol {
    margin-bottom: 18px;
    padding-left: 25px;
}

.paper-section li {
    margin-bottom: 6px;
}

/* Equations styling */
.equation-box {
    margin: 20px 0;
    padding: 10px;
    display: flex;
    justify-content: center;
    background: #f8fafc;
    border-radius: 6px;
    overflow-x: auto;
}

/* Tables styling */
.table-container {
    margin: 25px 0;
    overflow-x: auto;
    border: 1px solid #e5e7eb;
    border-radius: 6px;
}

table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.85rem;
    text-align: left;
}

th {
    background: #f3f4f6;
    color: #374151;
    font-weight: 600;
    padding: 10px 14px;
    border-bottom: 2px solid #e5e7eb;
}

td {
    padding: 10px 14px;
    border-bottom: 1px solid #e5e7eb;
    color: #4b5563;
}

.cell-good {
    background-color: rgba(120, 140, 93, 0.08); /* brand green tint */
    color: #4b5a37;
}

.cell-bad {
    background-color: rgba(217, 119, 87, 0.08); /* brand orange/red tint */
    color: #9c452b;
}

/* Figures */
.figure-container {
    margin: 30px 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    background: #f9fafb;
    border: 1px solid #e5e7eb;
    border-radius: 8px;
    padding: 20px;
}

.flowchart-box {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    gap: 10px;
    margin-bottom: 15px;
    font-family: 'Poppins', sans-serif;
    font-size: 0.85rem;
    position: relative;
    padding-bottom: 40px;
}

.flow-step {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    padding: 8px 12px;
    color: var(--text-primary);
    font-weight: 500;
}

.flow-arrow {
    color: var(--text-secondary);
    font-weight: 700;
}

.warning-step {
    background: rgba(217, 119, 87, 0.08);
    border-color: var(--accent-amber);
    color: #9c452b;
}

.critical-step {
    background: rgba(217, 119, 87, 0.15);
    border-color: var(--accent-red);
    color: #9c452b;
    font-weight: 600;
}

.flow-line-down {
    position: absolute;
    right: 40px;
    bottom: 20px;
    width: 2px;
    height: 20px;
    background: #cbd5e1;
}

.flow-line-back {
    position: absolute;
    left: 20px;
    right: 40px;
    bottom: 20px;
    height: 2px;
    background: #cbd5e1;
}

.flow-step-back {
    position: absolute;
    left: 20px;
    bottom: 0;
    width: calc(100% - 40px);
    background: rgba(217, 119, 87, 0.1);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    padding: 4px 8px;
    font-size: 0.75rem;
    text-align: center;
    color: #9c452b;
}

.figure-caption {
    font-size: 0.85rem;
    color: #4b5563;
    text-align: center;
}

/* SVG Chart details */
.chart-container-box {
    margin: 30px 0;
    border: 1px solid #e5e7eb;
    border-radius: 8px;
    padding: 15px;
    background: #f9fafb;
}

.chart-header h5 {
    font-family: 'Inter', sans-serif;
    font-size: 0.9rem;
    color: #374151;
    margin-bottom: 10px;
    text-align: center;
}

.svg-chart-wrapper {
    position: relative;
}

.grid-line {
    stroke: #e5e7eb;
    stroke-width: 1;
}

.axis-line {
    stroke: #4b5563;
}

.axis-label {
    fill: #4b5563;
    font-family: 'Inter', sans-serif;
    font-size: 10px;
}

.chart-dot {
    cursor: pointer;
    transition: r 0.2s ease, fill 0.2s ease;
}

.chart-dot:hover {
    r: 8px;
    fill: var(--accent-red);
}

.chart-tooltip {
    position: absolute;
    background: #1e293b;
    color: #f8fafc;
    padding: 6px 10px;
    border-radius: 4px;
    font-size: 0.75rem;
    pointer-events: none;
    display: none;
    z-index: 10;
    box-shadow: 0 4px 6px rgba(0,0,0,0.15);
    font-family: 'Inter', sans-serif;
}

/* Interactive Playground Section */
.simulator-section {
    background: #f8fafc;
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    padding: 24px;
}

.sim-playground-box {
    margin-top: 15px;
    border: 1px solid #cbd5e1;
    border-radius: 8px;
    overflow: hidden;
    background: #ffffff;
}

.prompt-tabs {
    display: flex;
    background: #f1f5f9;
    border-bottom: 1px solid #cbd5e1;
}

.tab-btn {
    border: none;
    background: none;
    padding: 10px 16px;
    font-family: 'Inter', sans-serif;
    font-size: 0.8rem;
    font-weight: 500;
    color: #64748b;
    cursor: pointer;
    border-right: 1px solid #cbd5e1;
    transition: all 0.2s ease;
}

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

.tab-btn.active {
    background: #ffffff;
    color: var(--text-primary);
    border-bottom: 2px solid var(--accent-red);
}

.prompt-display {
    padding: 12px 16px;
    background: #fafafb;
    border-bottom: 1px dashed #cbd5e1;
}

.prompt-header {
    font-family: 'Inter', sans-serif;
    font-size: 0.7rem;
    font-weight: 700;
    color: #94a3b8;
    letter-spacing: 0.5px;
    margin-bottom: 4px;
}

.prompt-body {
    font-family: 'Fira Code', monospace;
    font-size: 0.85rem;
    color: var(--text-primary);
}

/* Terminal output display styling */
.terminal-display {
    background: #191816; /* warm dark charcoal */
    color: #f8fafc;
    font-family: 'Fira Code', monospace;
    font-size: 0.8rem;
}

.terminal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: #121110;
    padding: 8px 16px;
    border-bottom: 1px solid #191816;
}

.terminal-dots {
    display: flex;
    gap: 6px;
}

.terminal-dots span {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--text-secondary);
    opacity: 0.4;
}

.terminal-title {
    font-family: 'Inter', sans-serif;
    font-size: 0.7rem;
    color: #64748b;
}

.terminal-body {
    padding: 16px;
    max-height: 250px;
    overflow-y: auto;
    white-space: pre-wrap;
    word-break: break-all;
}

.terminal-body code {
    color: #e2e8f0;
}

/* References styling */
.references-section {
    margin-top: 50px;
    border-top: 2px solid #e5e7eb;
    padding-top: 20px;
}

.references-list {
    font-size: 0.85rem;
    color: #4b5563;
    line-height: 1.5;
}

.references-list li {
    margin-bottom: 10px;
}

/* Media queries for responsiveness */
@media (max-width: 1024px) {
    .app-layout {
        grid-template-columns: 1fr;
    }
    
    .sidebar-sticky {
        position: relative;
        top: 0;
    }
}

@media (max-width: 640px) {
    .paper-content {
        padding: 30px 20px;
    }
    .paper-title {
        font-size: 1.7rem;
    }
}

/* Print Stylesheet - LaTeX mimicry */
@media print {
    @page {
        size: letter;
        margin: 1in;
    }

    body {
        background: #fff;
        color: #000;
        font-family: "Lora", Georgia, "Times New Roman", serif;
        font-size: 9.5pt;
        line-height: 1.35;
    }

    .arxiv-header, .sidebar, .btn-action, .chart-tooltip, .simulator-section {
        display: none !important;
    }

    .app-layout {
        display: block;
        margin: 0;
        padding: 0;
    }

    .paper-content {
        box-shadow: none;
        padding: 0;
        max-width: 100%;
        color: #000;
        background: #fff;
    }

    .academic-paper {
        column-count: 2;
        column-gap: 2pc;
    }

    .paper-title {
        font-family: "Poppins", Arial, sans-serif;
        font-size: 18pt;
        font-weight: 700;
        text-align: center;
        margin-bottom: 8pt;
        column-span: all;
        line-height: 1.2;
    }

    .author-block {
        text-align: center;
        margin-bottom: 15pt;
        column-span: all;
        font-size: 10pt;
    }

    .author-name {
        font-weight: bold;
    }

    .author-affiliation {
        font-style: italic;
        color: #333;
    }

    .author-email {
        font-family: monospace;
        font-size: 9pt;
        margin-top: 2pt;
    }

    .header-divider {
        display: block;
        height: 1px;
        border: 0;
        border-top: 0.5pt solid #000;
        margin: 12pt 0;
        column-span: all;
    }

    .abstract-section {
        column-span: all;
        margin: 0 auto 18pt auto;
        max-width: 85%;
        padding: 0;
    }

    .abstract-section h2 {
        font-size: 11pt;
        font-weight: bold;
        text-align: center;
        text-transform: uppercase;
        letter-spacing: 0.05em;
        margin-bottom: 6pt;
    }

    .abstract-section p {
        font-size: 9pt;
        line-height: 1.4;
        text-align: justify;
        text-indent: 0 !important;
    }

    .paper-section {
        page-break-inside: auto;
    }

    .paper-section h2 {
        font-family: "Poppins", Arial, sans-serif;
        font-size: 12pt;
        font-weight: bold;
        margin-top: 16pt;
        margin-bottom: 6pt;
        border-bottom: none;
        text-transform: none;
    }

    .paper-section h3 {
        font-family: "Poppins", Arial, sans-serif;
        font-size: 10.5pt;
        font-weight: bold;
        margin-top: 10pt;
        margin-bottom: 4pt;
    }

    .paper-section p {
        text-align: justify;
        margin-bottom: 8pt;
        text-indent: 1.25pc;
    }

    /* LaTeX style paragraph indent: no indent on the first paragraph after a heading */
    .paper-section h2 + p,
    .paper-section h3 + p,
    .paper-section .equation-box + p {
        text-indent: 0;
    }

    .equation-box {
        background: none;
        border: none;
        margin: 8pt 0;
        padding: 0;
        text-align: center;
        page-break-inside: avoid;
    }

    .table-container, .chart-container-box, .figure-container {
        page-break-inside: avoid;
        background: none;
        border: 0.5pt solid #000;
        margin: 12pt 0;
        padding: 6pt;
    }

    th {
        background: #f0f0f0;
        border-bottom: 1pt solid #000;
        font-size: 9pt;
    }

    td {
        border-bottom: 0.5pt solid #ccc;
        font-size: 8.5pt;
    }

    /* Force tables/figures to span all columns if too wide */
    .table-container.wide-content,
    .figure-container.wide-content {
        column-span: all;
    }
}