/* ==========================================================================
   1. Configuration (CSS Variables)
   ========================================================================== */
:root {
    /* Color Palette */
    --color-bg: #ffffff;
    --color-text-main: #1a1a1a;
    --color-text-muted: #666666;
    --color-border: #e5e5e5;

    /* Brand & CTAs (A commanding, trustworthy deep blue/slate) */
    --color-brand: #0f172a;
    --color-brand-hover: #1e293b;
    --color-accent: #2563eb;

    /* Typography */
    --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, "Open Sans", "Helvetica Neue", sans-serif;

    /* Layout */
    --max-width-header: 1200px;
    --max-width-content: 720px;
    /* Optimal reading width for white papers */
    --spacing-base: 1.5rem;
}

/* ==========================================================================
   2. Reset & Document Setup
   ========================================================================== */
*,
*::before,
*::after {
    box-sizing: border-box;
}

body {
    margin: 0;
    padding: 0;
    font-family: var(--font-sans);
    color: var(--color-text-main);
    background-color: var(--color-bg);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

a {
    color: var(--color-accent);
    text-decoration: none;
    transition: color 0.2s ease;
}

a:hover {
    text-decoration: underline;
}

/* Global SVG Safety Reset */
svg {
    max-width: 100%;
    height: auto;
}

/* ==========================================================================
   3. Global Layout (Matches default.hbs)
   ========================================================================== */
.site-wrapper {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.site-main {
    flex-grow: 1;
    /* Pushes the footer to the bottom */
    width: 100%;
    max-width: var(--max-width-content);
    margin: 0 auto;
    padding: calc(var(--spacing-base) * 3) var(--spacing-base);
}

/* ==========================================================================
   4. Header & Navigation
   ========================================================================== */
.site-header {
    border-bottom: 1px solid var(--color-border);
    padding: var(--spacing-base);
    background-color: var(--color-bg);
}

.header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: var(--max-width-header);
    margin: 0 auto;
}

.header-logo a {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-brand);
    text-decoration: none;
    letter-spacing: -0.02em;
}

.header-nav ul {
    list-style: none;
    display: flex;
    gap: var(--spacing-base);
    margin: 0;
    padding: 0;
}

.header-nav a {
    color: var(--color-text-muted);
    font-weight: 500;
}

.header-nav a:hover {
    color: var(--color-brand);
    text-decoration: none;
}

/* ==========================================================================
   5. Buttons & Calls to Action
   ========================================================================== */
.header-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.btn-nav {
    font-weight: 600;
    font-size: 0.9rem;
}

.btn-login {
    color: var(--color-text-main);
}

.btn-subscribe {
    background-color: var(--color-brand);
    color: #ffffff;
    padding: 0.5rem 1.25rem;
    border-radius: 4px;
    text-decoration: none;
}

.btn-subscribe:hover {
    background-color: var(--color-brand-hover);
    color: #ffffff;
    text-decoration: none;
}

/* ==========================================================================
   6. Footer
   ========================================================================== */
.site-footer {
    border-top: 1px solid var(--color-border);
    padding: calc(var(--spacing-base) * 2) var(--spacing-base);
    text-align: center;
    font-size: 0.9rem;
    color: var(--color-text-muted);
}

/* ==========================================================================
   7. Post Feed (index.hbs)
   ========================================================================== */
.feed-header {
    margin-bottom: calc(var(--spacing-base) * 2);
    padding-bottom: var(--spacing-base);
    border-bottom: 2px solid var(--color-brand);
}

.feed-description {
    font-size: 1.2rem;
    color: var(--color-text-muted);
    margin: 0;
}

.post-feed {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-base);
}

.feed-card {
    border: 1px solid var(--color-border);
    border-radius: 6px;
    background: #ffffff;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.feed-card:hover {
    border-color: var(--color-accent);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}

.feed-card-link {
    display: block;
    padding: var(--spacing-base);
    color: inherit;
}

.feed-card-link:hover {
    text-decoration: none;
}

.feed-card-tag {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-weight: 700;
    color: var(--color-accent);
    margin-bottom: 0.5rem;
    display: inline-block;
}

.feed-card-title {
    margin: 0 0 0.5rem 0;
    font-size: 1.4rem;
    color: var(--color-brand);
}

.feed-card-excerpt p {
    margin: 0;
    color: var(--color-text-muted);
    font-size: 0.95rem;
}

.feed-card-meta {
    margin-top: 1rem;
    font-size: 0.85rem;
    color: #888;
    display: flex;
    align-items: center;
}

.meta-divider {
    margin: 0 0 0.5rem;
}

.premium-indicator {
    background-color: var(--color-brand);
    color: #ffffff;
    padding: 0.1rem 0.4rem;
    border-radius: 3px;
    font-size: 0.75rem;
    font-weight: 600;
}

/* ==========================================================================
   8. Custom Audio Brief Layout
   ========================================================================== */
.brief-header {
    margin-bottom: calc(var(--spacing-base) * 2);
    text-align: center;
}

.brief-meta {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 1rem;
    font-size: 0.85rem;
    color: var(--color-text-muted);
    margin-bottom: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-weight: 600;
}

.brief-tag {
    color: var(--color-accent);
}

.brief-title {
    font-size: 2.5rem;
    line-height: 1.2;
    margin: 0;
    color: var(--color-brand);
    letter-spacing: -0.02em;
}

.brief-content .kg-audio-card {
    margin: 2rem 0;
    border: 1px solid var(--color-border);
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.03);
}

/* ==========================================================================
   9. Premium Asset & Paywall Component
   ========================================================================== */
.brief-premium-asset {
    margin-top: calc(var(--spacing-base) * 3);
    padding-top: calc(var(--spacing-base) * 2);
    border-top: 2px solid var(--color-border);
}

.asset-unlocked {
    display: flex;
    align-items: center;
    background-color: #f8fafc;
    border: 1px solid #cbd5e1;
    padding: var(--spacing-base);
    border-radius: 6px;
    gap: 1.5rem;
}

.asset-icon svg {
    color: var(--color-accent);
    width: 24px;
    height: 24px;
}

.asset-details h3 {
    margin: 0 0 0.5rem 0;
    font-size: 1.2rem;
    color: var(--color-brand);
}

.asset-details p {
    margin: 0;
    font-size: 0.9rem;
    color: var(--color-text-muted);
}

.btn-download {
    background-color: var(--color-accent);
    color: #ffffff;
    padding: 0.75rem 1.5rem;
    border-radius: 4px;
    font-weight: 600;
    white-space: nowrap;
    margin-left: auto;
}

.btn-download:hover {
    background-color: #1d4ed8;
    color: #ffffff;
    text-decoration: none;
}

.paywall-cta {
    text-align: center;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0) 0%, #f8fafc 100%);
    padding: calc(var(--spacing-base) * 2);
    border: 1px solid var(--color-border);
    border-radius: 6px;
}

.paywall-cta h2 {
    color: var(--color-brand);
    margin-top: 0;
}

.paywall-actions {
    margin-top: 1.5rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

.paywall-login {
    font-size: 0.9rem;
    color: var(--color-text-muted);
}

/* ==========================================================================
   10. White Paper Index & Document Layout
   ========================================================================== */
.whitepaper-header-block h1 {
    font-size: 2.8rem;
    color: var(--color-brand);
    margin: 0.5rem 0;
    letter-spacing: -0.03em;
}

.archive-label {
    font-size: 0.8rem;
    text-transform: uppercase;
    font-weight: 700;
    letter-spacing: 0.1em;
    color: var(--color-text-muted);
}

.whitepaper-card {
    border-left: 4px solid var(--color-brand);
    border-radius: 0 6px 6px 0;
}

.access-status {
    margin-left: auto;
    font-size: 0.8rem;
    font-weight: 600;
    padding: 0.15rem 0.5rem;
    border-radius: 3px;
}

.access-status.unlocked {
    background-color: #f0fdf4;
    color: #16a34a;
}

.access-status.locked {
    background-color: #fef2f2;
    color: #dc2626;
}

.whitepaper-document {
    padding-top: 2rem;
}

.document-header {
    border-bottom: 2px solid var(--color-text-main);
    padding-bottom: calc(var(--spacing-base) * 2);
    margin-bottom: calc(var(--spacing-base) * 2);
}

.document-meta-top {
    font-size: 0.85rem;
    font-weight: 700;
    text-transform: uppercase;
    color: var(--color-accent);
    letter-spacing: 0.05em;
}

.document-title {
    font-size: 3rem;
    line-height: 1.15;
    color: var(--color-brand);
    letter-spacing: -0.03em;
    margin: 1rem 0;
}

.document-abstract {
    background-color: #f8fafc;
    border: 1px solid var(--color-border);
    padding: var(--spacing-base);
    border-radius: 4px;
    font-size: 1.05rem;
    color: #334155;
    line-height: 1.7;
}

.document-body {
    font-size: 1.15rem;
    line-height: 1.8;
    color: #262626;
}

.document-body h2 {
    font-size: 1.8rem;
    margin-top: 2.5rem;
    color: var(--color-brand);
    border-bottom: 1px solid var(--color-border);
    padding-bottom: 0.5rem;
}

.document-body h3 {
    font-size: 1.4rem;
    margin-top: 2rem;
    color: var(--color-brand);
}

/* ==========================================================================
   11. Strict Document Paywall Gating
   ========================================================================== */
.document-paywall {
    background-color: #0f172a;
    color: #ffffff;
    padding: calc(var(--spacing-base) * 3) calc(var(--spacing-base) * 2);
    border-radius: 8px;
    text-align: center;
    margin-top: 3rem;
    box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.1);
}

.document-paywall h2 {
    color: #ffffff;
    border: none;
    margin: 1rem 0;
    font-size: 2rem;
}

.document-paywall p {
    color: #cbd5e1;
    max-width: 540px;
    margin: 0 auto 2rem auto;
    font-size: 1.05rem;
}

.paywall-shield-icon svg {
    color: var(--color-accent);
    width: 36px;
    height: 36px;
}

.paywall-buttons {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

.btn-premium-action {
    background-color: var(--color-accent);
    color: #ffffff;
    font-weight: 700;
    padding: 0.85rem 2rem;
    border-radius: 4px;
    font-size: 1.1rem;
    transition: background-color 0.2s ease;
}

.btn-premium-action:hover {
    background-color: #1d4ed8;
    color: #ffffff;
    text-decoration: none;
}

.paywall-alt-action {
    font-size: 0.9rem;
    color: #94a3b8;
}

.paywall-alt-action a {
    color: #ffffff;
    text-decoration: underline;
}

/* ==========================================================================
   12. Scoped Sequence Navigation (custom-audio-brief.hbs)
   ========================================================================== */
.blueprint-sequence-nav {
    margin-top: calc(var(--spacing-base) * 3);
    padding-top: var(--spacing-base);
    border-top: 1px dashed var(--color-border);
}

.seq-nav-inner {
    display: flex;
    justify-content: space-between;
    gap: var(--spacing-base);
}

.seq-nav-box {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.next-box {
    text-align: right;
}

.seq-label {
    font-size: 0.8rem;
    text-transform: uppercase;
    font-weight: 700;
    color: var(--color-accent);
    letter-spacing: 0.05em;
    margin-bottom: 0.25rem;
}

.seq-label-disabled {
    font-size: 0.8rem;
    text-transform: uppercase;
    font-weight: 600;
    color: var(--color-text-muted);
    letter-spacing: 0.05em;
}

.seq-nav-box a {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--color-brand);
    line-height: 1.3;
}

.seq-nav-box a:hover {
    color: var(--color-accent);
    text-decoration: none;
}

/* ==========================================================================
   13. Blueprint Dashboard Matrix Grid (index-blueprint.hbs)
   ========================================================================== */
.blueprint-master-header h1 {
    font-size: 2.8rem;
    color: var(--color-brand);
    margin: 0.5rem 0;
    letter-spacing: -0.03em;
}

.blueprint-matrix-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1rem;
    margin-top: 2rem;
}

.matrix-grid-card {
    display: flex;
    align-items: center;
    padding: 1.25rem;
    background: #ffffff;
    border: 1px solid var(--color-border);
    border-radius: 6px;
    color: inherit;
    transition: all 0.2s ease;
}

.matrix-grid-card:hover {
    border-color: var(--color-brand);
    box-shadow: 0 4px 12px rgba(15, 23, 42, 0.06);
    text-decoration: none;
    transform: translateY(-1px);
}

.matrix-card-index {
    font-size: 0.85rem;
    font-weight: 700;
    text-transform: uppercase;
    background-color: var(--color-brand);
    color: #ffffff;
    padding: 0.4rem 0.6rem;
    border-radius: 4px;
    letter-spacing: 0.05em;
    margin-right: 1rem;
    white-space: nowrap;
}

.matrix-card-details {
    display: flex;
    flex-direction: column;
}

.matrix-card-title {
    margin: 0;
    font-size: 1.1rem;
    color: var(--color-brand);
    font-weight: 600;
    line-height: 1.3;
}

.matrix-card-runtime {
    font-size: 0.8rem;
    color: var(--color-text-muted);
    margin-top: 0.25rem;
}

/* ==========================================================================
   14. Ghost Readmore Container & SVG Fix (.gh-readmore)
   ========================================================================== */
aside.gh-readmore,
.gh-readmore {
    margin-top: calc(var(--spacing-base) * 3);
    padding-top: var(--spacing-base);
    border-top: 1px dashed var(--color-border);
    width: 100%;
}

.gh-readmore-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--spacing-base);
    width: 100%;
}

.gh-readmore-prev,
.gh-readmore-next {
    flex: 1;
}

.gh-readmore-prev a,
.gh-readmore-next a {
    display: inline-flex !important;
    align-items: center !important;
    gap: 0.5rem !important;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--color-brand);
    text-decoration: none;
}

.gh-readmore-prev a h4,
.gh-readmore-next a h4 {
    margin: 0 !important;
    padding: 0 !important;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--color-brand);
    display: inline-block;
}

/* Force strict dimension scaling on Ghost Readmore SVGs */
aside.gh-readmore svg,
.gh-readmore svg,
.gh-readmore-inner svg,
.gh-readmore-prev svg,
.gh-readmore-next svg,
.gh-readmore-prev a svg,
.gh-readmore-next a svg {
    width: 18px !important;
    height: 27px !important;
    min-width: 18px !important;
    min-height: 27px !important;
    max-width: 18px !important;
    max-height: 27px !important;
    display: inline-block !important;
    vertical-align: middle !important;
    flex-shrink: 0 !important;
}