/**
 * Formula Metadata Display - Scientific Rigor Styling
 * ====================================================
 *
 * Complete metadata display for formulas in Principia Metaphysica paper.
 * Shows input/output parameters, derivations, experimental comparisons,
 * and scientific context with expandable panels.
 *
 * Copyright (c) 2025-2026 Andrew Keith Watts. All rights reserved.
 */

/* ========================================================================
   EQUATION WRAPPER - Main container
   ======================================================================== */

.equation-wrapper.academic-equation {
    margin: 2rem 0;
    padding: 0;
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(139, 127, 255, 0.15);
    overflow: hidden;
    transition: all 0.3s ease;
}

.equation-wrapper.academic-equation:hover {
    background: rgba(255, 255, 255, 0.03);
    border-color: rgba(139, 127, 255, 0.25);
}

/* ========================================================================
   EQUATION DISPLAY - Main formula with number
   ======================================================================== */

.equation-line {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1.5rem 2rem;
    position: relative;
    background: linear-gradient(135deg, rgba(139, 127, 255, 0.03), rgba(255, 255, 255, 0.01));
}

.equation-content {
    flex: 1;
    text-align: center;
    font-size: 1.2em;
    color: var(--text-primary, #f8f9fa);
}

.equation-number {
    position: absolute;
    right: 2rem;
    top: 50%;
    transform: translateY(-50%);
    font-size: 1rem;
    color: rgba(139, 127, 255, 0.8);
    font-family: 'Crimson Text', Georgia, serif;
    font-weight: 600;
}

/* ========================================================================
   PLAIN TEXT FALLBACK - For accessibility
   ======================================================================== */

.equation-plaintext {
    padding: 0.75rem 1.5rem;
    background: rgba(0, 0, 0, 0.2);
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    font-family: 'Source Code Pro', 'Fira Code', monospace;
    font-size: 0.85rem;
    color: rgba(163, 230, 53, 0.9);
    text-align: center;
    cursor: help;
}

/* ========================================================================
   EQUATION TERMS - Parameter definitions
   ======================================================================== */

.equation-terms {
    padding: 1rem 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    background: rgba(0, 0, 0, 0.15);
}

.terms-intro {
    font-size: 0.95rem;
    line-height: 1.6;
    color: rgba(255, 255, 255, 0.8);
    margin: 0;
}

.terms-intro i {
    color: #8b7fff;
    font-weight: 600;
    font-family: 'Times New Roman', serif;
    font-style: italic;
}

/* ========================================================================
   EQUATION DISCUSSION - Description
   ======================================================================== */

.equation-discussion {
    padding: 1rem 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    background: rgba(255, 255, 255, 0.01);
}

.equation-discussion p {
    margin: 0;
    font-size: 0.95rem;
    line-height: 1.6;
    color: rgba(255, 255, 255, 0.7);
    font-style: italic;
}

/* ========================================================================
   METADATA PANEL - Expandable scientific information
   ======================================================================== */

.equation-metadata-panel {
    border-top: 2px solid rgba(139, 127, 255, 0.2);
    background: rgba(0, 0, 0, 0.25);
}

.metadata-toggle {
    width: 100%;
    background: transparent;
    border: none;
    padding: 0.9rem 2rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: rgba(139, 127, 255, 0.9);
    font-size: 0.9rem;
    font-weight: 600;
    transition: all 0.2s ease;
    text-align: left;
}

.metadata-toggle:hover {
    background: rgba(139, 127, 255, 0.08);
    color: #a394ff;
}

.toggle-icon {
    transition: transform 0.3s ease;
    font-size: 0.8rem;
    color: #8b7fff;
}

.equation-metadata-panel.expanded .toggle-icon {
    transform: rotate(90deg);
}

.metadata-content {
    display: none;
    padding: 1.5rem 2rem 2rem;
    background: rgba(0, 0, 0, 0.3);
}

.equation-metadata-panel.expanded .metadata-content {
    display: block;
    animation: slideDown 0.3s ease;
}

/* Paper mode: always show metadata without toggle */
.equation-metadata-panel.always-expanded .metadata-content {
    display: block;
}

.equation-metadata-panel.always-expanded {
    border-top: none;
}

@keyframes slideDown {
    from {
        opacity: 0;
        max-height: 0;
    }
    to {
        opacity: 1;
        max-height: 2000px;
    }
}

/* ========================================================================
   METADATA SECTIONS - Different types of metadata
   ======================================================================== */

.metadata-section {
    margin-bottom: 1.5rem;
    padding: 1.25rem;
    background: rgba(255, 255, 255, 0.03);
    border-radius: 8px;
    border-left: 4px solid rgba(139, 127, 255, 0.4);
}

.metadata-section:last-child {
    margin-bottom: 0;
}

.metadata-section-title {
    margin: 0 0 1rem 0;
    font-size: 0.9rem;
    font-weight: 700;
    color: #a394ff;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Input Parameters */
.metadata-inputs {
    border-left-color: rgba(59, 130, 246, 0.6);
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.05), rgba(255, 255, 255, 0.02));
}

.metadata-inputs .metadata-section-title {
    color: #60a5fa;
}

/* Output Parameters */
.metadata-outputs {
    border-left-color: rgba(251, 146, 60, 0.6);
    background: linear-gradient(135deg, rgba(251, 146, 60, 0.05), rgba(255, 255, 255, 0.02));
}

.metadata-outputs .metadata-section-title {
    color: #fb923c;
}

/* Derivation */
.metadata-derivation {
    border-left-color: rgba(74, 222, 128, 0.6);
    background: linear-gradient(135deg, rgba(74, 222, 128, 0.05), rgba(255, 255, 255, 0.02));
}

.metadata-derivation .metadata-section-title {
    color: #4ade80;
}

/* References */
.metadata-references {
    border-left-color: rgba(168, 85, 247, 0.6);
    background: linear-gradient(135deg, rgba(168, 85, 247, 0.05), rgba(255, 255, 255, 0.02));
}

.metadata-references .metadata-section-title {
    color: #a855f7;
}

/* Category */
.metadata-category {
    border-left-color: rgba(139, 127, 255, 0.6);
}

/* Values/Comparison */
.metadata-values {
    border-left-color: rgba(34, 197, 94, 0.6);
    background: linear-gradient(135deg, rgba(34, 197, 94, 0.05), rgba(255, 255, 255, 0.02));
}

.metadata-values .metadata-section-title {
    color: #22c55e;
}

/* Notes */
.metadata-notes {
    border-left-color: rgba(255, 212, 59, 0.6);
    background: linear-gradient(135deg, rgba(255, 212, 59, 0.05), rgba(255, 255, 255, 0.02));
}

.metadata-notes .metadata-section-title {
    color: #ffd43b;
}

/* ========================================================================
   PARAMETER LISTS
   ======================================================================== */

.param-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.param-item {
    display: inline-block;
}

.param-link {
    display: inline-block;
    padding: 0.4rem 0.75rem;
    background: rgba(139, 127, 255, 0.15);
    border: 1px solid rgba(139, 127, 255, 0.3);
    border-radius: 6px;
    font-family: 'Source Code Pro', 'Fira Code', monospace;
    font-size: 0.85rem;
    color: #93c5fd;
    cursor: pointer;
    transition: all 0.2s ease;
}

.param-link:hover {
    background: rgba(139, 127, 255, 0.25);
    border-color: rgba(139, 127, 255, 0.5);
    color: #bfdbfe;
    transform: translateY(-1px);
}

/* Input parameter styling */
.metadata-inputs .param-link {
    background: rgba(59, 130, 246, 0.15);
    border-color: rgba(59, 130, 246, 0.3);
    color: #93c5fd;
}

.metadata-inputs .param-link:hover {
    background: rgba(59, 130, 246, 0.25);
    border-color: rgba(59, 130, 246, 0.5);
}

/* Output parameter styling */
.metadata-outputs .param-link {
    background: rgba(251, 146, 60, 0.15);
    border-color: rgba(251, 146, 60, 0.3);
    color: #fdba74;
}

.metadata-outputs .param-link:hover {
    background: rgba(251, 146, 60, 0.25);
    border-color: rgba(251, 146, 60, 0.5);
}

/* ========================================================================
   DERIVATION STEPS
   ======================================================================== */

.derivation-steps {
    list-style: none;
    counter-reset: step-counter;
    padding: 0;
    margin: 0;
}

.derivation-step {
    counter-increment: step-counter;
    margin-bottom: 0.75rem;
    padding-left: 2.5rem;
    position: relative;
    font-size: 0.9rem;
    line-height: 1.6;
    color: rgba(255, 255, 255, 0.8);
}

.derivation-step:last-child {
    margin-bottom: 0;
}

.derivation-step::before {
    content: counter(step-counter) ".";
    position: absolute;
    left: 0;
    font-weight: 700;
    color: #4ade80;
    width: 2rem;
}

/* ========================================================================
   REFERENCE LIST
   ======================================================================== */

.reference-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.reference-item {
    margin-bottom: 0.6rem;
    padding-left: 1.25rem;
    position: relative;
    font-size: 0.88rem;
    line-height: 1.5;
    color: rgba(255, 255, 255, 0.7);
}

.reference-item:last-child {
    margin-bottom: 0;
}

.reference-item::before {
    content: "›";
    position: absolute;
    left: 0;
    color: #a855f7;
    font-weight: 700;
}

/* ========================================================================
   CATEGORY BADGES
   ======================================================================== */

.category-badge {
    display: inline-block;
}

.badge {
    display: inline-block;
    padding: 0.5rem 1rem;
    border-radius: 6px;
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.5rem;
}

.badge-desc {
    margin: 0.5rem 0 0 0;
    font-size: 0.85rem;
    line-height: 1.5;
    color: rgba(255, 255, 255, 0.6);
    font-style: italic;
}

.badge-established {
    background: rgba(34, 197, 94, 0.2);
    color: #22c55e;
    border: 1px solid rgba(34, 197, 94, 0.4);
}

.badge-theory {
    background: rgba(139, 127, 255, 0.2);
    color: #8b7fff;
    border: 1px solid rgba(139, 127, 255, 0.4);
}

.badge-derived {
    background: rgba(59, 130, 246, 0.2);
    color: #3b82f6;
    border: 1px solid rgba(59, 130, 246, 0.4);
}

.badge-prediction {
    background: rgba(255, 212, 59, 0.2);
    color: #ffd43b;
    border: 1px solid rgba(255, 212, 59, 0.4);
}

.badge-experimental {
    background: rgba(251, 146, 60, 0.2);
    color: #fb923c;
    border: 1px solid rgba(251, 146, 60, 0.4);
}

/* ========================================================================
   VALUE COMPARISON - Theory vs Experiment
   ======================================================================== */

.value-comparison {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.value-item {
    display: flex;
    align-items: baseline;
    gap: 0.5rem;
    padding: 0.75rem 1rem;
    background: rgba(0, 0, 0, 0.3);
    border-radius: 6px;
    border-left: 3px solid rgba(139, 127, 255, 0.5);
}

.value-label {
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: rgba(255, 255, 255, 0.5);
    min-width: 90px;
}

.value-number {
    font-family: 'Source Code Pro', 'Fira Code', monospace;
    font-size: 1rem;
    font-weight: 600;
    color: #f8f9fa;
}

.value-units {
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.6);
    font-style: italic;
}

.value-computed {
    border-left-color: rgba(59, 130, 246, 0.6);
}

.value-experimental {
    border-left-color: rgba(251, 146, 60, 0.6);
}

.value-deviation {
    border-left-color: rgba(168, 85, 247, 0.6);
}

.value-deviation.excellent .value-number {
    color: #22c55e;
}

.value-deviation.good .value-number {
    color: #ffd43b;
}

.value-deviation.fair .value-number {
    color: #fb923c;
}

/* ========================================================================
   NOTES SECTION
   ======================================================================== */

.metadata-notes-text {
    margin: 0;
    font-size: 0.9rem;
    line-height: 1.6;
    color: rgba(255, 255, 255, 0.7);
}

/* ========================================================================
   EQUATION REFERENCE TOOLTIPS
   ======================================================================== */

.equation-ref {
    color: #8b7fff;
    text-decoration: none;
    border-bottom: 1px dotted rgba(139, 127, 255, 0.5);
    transition: all 0.2s ease;
    cursor: pointer;
}

.equation-ref:hover {
    color: #a394ff;
    border-bottom-color: #a394ff;
}

.equation-tooltip {
    position: fixed;
    z-index: 10000;
    background: rgba(26, 31, 58, 0.98);
    backdrop-filter: blur(16px) saturate(180%);
    -webkit-backdrop-filter: blur(16px) saturate(180%);
    border: 1px solid rgba(139, 127, 255, 0.4);
    border-radius: 8px;
    padding: 1rem;
    max-width: 400px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
    animation: tooltipFadeIn 0.2s ease;
}

.tooltip-header {
    font-size: 0.8rem;
    font-weight: 700;
    color: #8b7fff;
    margin-bottom: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.tooltip-latex {
    padding: 0.75rem;
    background: rgba(0, 0, 0, 0.3);
    border-radius: 6px;
    margin-bottom: 0.75rem;
    text-align: center;
}

.tooltip-desc {
    font-size: 0.85rem;
    line-height: 1.5;
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 0.5rem;
    font-style: italic;
}

.tooltip-hint {
    font-size: 0.75rem;
    color: rgba(139, 127, 255, 0.7);
    text-align: center;
    margin-top: 0.5rem;
}

@keyframes tooltipFadeIn {
    from {
        opacity: 0;
        transform: translateY(-5px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ========================================================================
   COMPACT INLINE LAYOUT - Grid-based params, inline refs/category
   ======================================================================== */

/* Parameters Grid - Two columns for input/output */
.metadata-params-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    margin-bottom: 1rem;
}

.params-column {
    background: rgba(0, 0, 0, 0.2);
    border-radius: 8px;
    padding: 1rem;
}

.params-column.inputs,
.params-column.params-inputs {
    border-left: 3px solid rgba(59, 130, 246, 0.6);
}

.params-column.outputs,
.params-column.params-outputs {
    border-left: 3px solid rgba(251, 146, 60, 0.6);
}

.params-label {
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: 0.5rem;
    opacity: 0.7;
}

.params-column.inputs .params-label,
.params-column.params-inputs .params-label {
    color: #60a5fa;
}

.params-column.outputs .params-label,
.params-column.params-outputs .params-label {
    color: #fb923c;
}

.params-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
}

.param-chip {
    display: inline-block;
    padding: 0.3rem 0.6rem;
    background: rgba(139, 127, 255, 0.12);
    border: 1px solid rgba(139, 127, 255, 0.25);
    border-radius: 4px;
    font-family: 'Source Code Pro', 'Fira Code', monospace;
    font-size: 0.8rem;
    color: rgba(255, 255, 255, 0.85);
    cursor: pointer;
    transition: all 0.15s ease;
}

.param-chip:hover {
    background: rgba(139, 127, 255, 0.22);
    border-color: rgba(139, 127, 255, 0.45);
    transform: translateY(-1px);
}

.params-column.inputs .param-chip,
.params-column.params-inputs .param-chip {
    background: rgba(59, 130, 246, 0.12);
    border-color: rgba(59, 130, 246, 0.25);
    color: #93c5fd;
}

.params-column.inputs .param-chip:hover,
.params-column.params-inputs .param-chip:hover {
    background: rgba(59, 130, 246, 0.22);
    border-color: rgba(59, 130, 246, 0.45);
}

.params-column.outputs .param-chip,
.params-column.params-outputs .param-chip {
    background: rgba(251, 146, 60, 0.12);
    border-color: rgba(251, 146, 60, 0.25);
    color: #fdba74;
}

.params-column.outputs .param-chip:hover,
.params-column.params-outputs .param-chip:hover {
    background: rgba(251, 146, 60, 0.22);
    border-color: rgba(251, 146, 60, 0.45);
}

/* Dynamic param chip sub-elements */
.param-chip .param-name {
    font-weight: 600;
}

.param-chip .param-value {
    opacity: 0.75;
    font-weight: 400;
    margin-left: 0.15rem;
}

/* Status-colored param chips */
.param-chip.param-status-geometric {
    border-color: rgba(34, 197, 94, 0.35);
}

.param-chip.param-status-derived {
    border-color: rgba(139, 127, 255, 0.35);
}

.param-chip.param-status-predicted {
    border-color: rgba(251, 191, 36, 0.35);
}

.param-chip.param-status-established {
    border-color: rgba(148, 163, 184, 0.35);
}

/* Derivation Steps - with description and formula */
.derivation-step .step-description {
    color: rgba(255, 255, 255, 0.6);
    font-style: italic;
    font-size: 0.85rem;
}

.derivation-step .step-formula {
    font-family: 'Source Code Pro', 'Fira Code', monospace;
    color: rgba(255, 255, 255, 0.9);
}

/* Category - Compact inline badge */
.metadata-category-inline {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.75rem;
}

.metadata-category-inline .badge {
    margin-bottom: 0;
    padding: 0.35rem 0.75rem;
    font-size: 0.7rem;
}

.metadata-category-inline .badge-desc {
    margin: 0;
    font-size: 0.8rem;
}

/* References - Compact inline list */
.metadata-references-inline {
    display: flex;
    flex-wrap: wrap;
    align-items: baseline;
    gap: 0.35rem;
    padding: 0.5rem 0;
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.6);
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    margin-top: 0.75rem;
}

.refs-label {
    font-weight: 600;
    color: #a855f7;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.ref-item {
    color: rgba(255, 255, 255, 0.65);
}

.ref-item::after {
    content: " •";
    color: rgba(139, 127, 255, 0.4);
    margin-left: 0.25rem;
}

.ref-item:last-child::after {
    content: none;
}

/* ========================================================================
   RESPONSIVE DESIGN
   ======================================================================== */

@media screen and (max-width: 768px) {
    /* Compact layout responsiveness */
    .metadata-params-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .metadata-references-inline {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.25rem;
    }
    .equation-line {
        padding: 1rem 1.5rem;
        flex-direction: column;
        gap: 0.5rem;
    }

    .equation-number {
        position: static;
        transform: none;
        margin-top: 0.5rem;
    }

    .equation-plaintext {
        padding: 0.5rem 1rem;
        font-size: 0.75rem;
    }

    .equation-terms,
    .equation-discussion {
        padding: 0.75rem 1.5rem;
    }

    .metadata-toggle {
        padding: 0.75rem 1.5rem;
        font-size: 0.85rem;
    }

    .metadata-content {
        padding: 1rem 1.5rem;
    }

    .metadata-section {
        padding: 1rem;
        margin-bottom: 1rem;
    }

    .value-comparison {
        gap: 0.5rem;
    }

    .value-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.25rem;
        padding: 0.5rem 0.75rem;
    }

    .equation-tooltip {
        max-width: 300px;
        padding: 0.75rem;
    }
}

@media screen and (max-width: 480px) {
    .equation-content {
        font-size: 1em;
    }

    .param-list {
        flex-direction: column;
        gap: 0.35rem;
    }

    .param-link {
        width: 100%;
        text-align: center;
    }
}

/* ========================================================================
   PRINT STYLES
   ======================================================================== */

@media print {
    .equation-wrapper.academic-equation {
        border: 1px solid #000;
        break-inside: avoid;
        page-break-inside: avoid;
    }

    .equation-metadata-panel {
        border-top: 1px solid #000;
    }

    .metadata-toggle {
        display: none;
    }

    .metadata-content {
        display: block !important;
        background: transparent;
    }

    .equation-tooltip {
        display: none;
    }

    .badge,
    .param-link,
    .value-item {
        border-color: #000;
        background: transparent;
    }
}