/* ==========================================================================
   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;
}

/* ==========================================================================
   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; /* Prevents whole card text from underlining */
}

.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 0.5rem;
}

.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;
}

/* Enhancing the Native Ghost Audio Player injected by {{content}} */
.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);
}

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

.asset-icon svg {
    color: var(--color-accent);
}

.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;
}

/* Locked State (Paywall) */
.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);
}