/* ==========================================================================
   VOICEGRAVITY.COM — Official Blog & Engineering Playbooks Stylesheet
   Strictly aligned with SKILLS.md and VoiceGravity Design System
   ========================================================================== */

:root {
    --blog-navy: #0f172a;
    --blog-slate: #334155;
    --blog-muted: #64748b;
    --blog-light: #f8fafc;
    --blog-blue: #2563eb;
    --blog-blue-hover: #1d4ed8;
    --blog-blue-soft: #eff6ff;
    --blog-blue-border: #bfdbfe;
    --blog-green: #059669;
    --blog-green-soft: #ecfdf5;
    --blog-green-border: #a7f3d0;
    --blog-border: rgba(15, 23, 42, 0.08);
    --blog-shadow-sm: 0 4px 14px rgba(15, 23, 42, 0.04);
    --blog-shadow-md: 0 16px 36px rgba(15, 23, 42, 0.07);
    --blog-shadow-lg: 0 24px 60px rgba(15, 23, 42, 0.10);
    --blog-radius: 12px;
}

body.blog-article-page,
body.blog-feed-page {
    background-color: #f7f5f2;
    color: var(--blog-navy);
    font-family: var(--font-primary, 'ABC Monument Grotesk', -apple-system, BlinkMacSystemFont, sans-serif);
    margin: 0;
    padding: 0;
    -webkit-font-smoothing: antialiased;
}

/* ==========================================================================
   Feed / Index Layout
   ========================================================================== */
.blog-feed-header {
    max-width: 1280px;
    margin: 3.5rem auto 2rem auto;
    padding: 0 2rem;
    text-align: left;
}

.blog-kicker-tag {
    font-size: 0.76rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--blog-blue);
    display: inline-block;
    margin-bottom: 0.6rem;
}

.blog-feed-header h1 {
    font-size: clamp(2.2rem, 4vw, 3.4rem);
    font-weight: 800;
    letter-spacing: -0.025em;
    line-height: 1.15;
    color: var(--blog-navy);
    margin: 0 0 1rem 0;
}

.blog-feed-header p {
    font-size: 1.15rem;
    color: var(--blog-slate);
    max-width: 780px;
    line-height: 1.6;
    margin: 0;
}

/* Category Filter Bar */
.blog-filter-bar {
    max-width: 1280px;
    margin: 2rem auto 2.5rem auto;
    padding: 0 2rem;
    display: flex;
    flex-wrap: wrap;
    gap: 0.6rem;
}

.blog-filter-btn {
    background: #ffffff;
    border: 1px solid var(--blog-border);
    padding: 0.55rem 1.15rem;
    border-radius: 999px;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--blog-slate);
    cursor: pointer;
    transition: all 0.18s ease;
    font-family: inherit;
}

.blog-filter-btn:hover,
.blog-filter-btn.active {
    background: var(--blog-navy);
    color: #ffffff;
    border-color: var(--blog-navy);
}

/* Grid & Cards */
.blog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(360px, 1fr));
    gap: 1.8rem;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 2rem 6rem 2rem;
}

.glass-card {
    background: #ffffff;
    border: 1px solid var(--blog-border);
    border-radius: var(--blog-radius);
    padding: 2rem;
    display: flex;
    flex-direction: column;
    box-shadow: var(--blog-shadow-sm);
    transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.glass-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--blog-shadow-md);
    border-color: rgba(37, 99, 235, 0.3);
}

.glass-card .blog-category-tag {
    font-size: 0.72rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--blog-blue);
    margin-bottom: 0.75rem;
}

.glass-card .blog-card-title {
    font-size: 1.28rem;
    font-weight: 700;
    line-height: 1.3;
    color: var(--blog-navy);
    margin: 0 0 0.75rem 0;
}

.glass-card .blog-card-desc {
    font-size: 0.92rem;
    line-height: 1.6;
    color: var(--blog-muted);
    flex: 1;
    margin: 0 0 1.5rem 0;
}

.glass-card .blog-card-link {
    color: var(--blog-blue);
    text-decoration: none;
    font-weight: 700;
    font-size: 0.92rem;
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    transition: gap 0.2s ease;
}

.glass-card .blog-card-link:hover {
    gap: 0.65rem;
}

/* ==========================================================================
   Article Page Layout
   ========================================================================== */
.blog-article-container {
    max-width: 1320px;
    margin: 0 auto;
    padding: 2.5rem 2rem 5rem 2rem;
}

/* Hero Wrapper */
.blog-article-hero-wrapper {
    background: linear-gradient(135deg, #0b1120 0%, #1e293b 100%);
    color: #ffffff;
    padding: 3.5rem 3rem;
    border-radius: var(--blog-radius);
    margin-bottom: 3rem;
    box-shadow: var(--blog-shadow-md);
}

.blog-article-hero-wrapper .blog-article-meta {
    margin-bottom: 1.2rem;
    display: flex;
    align-items: center;
    gap: 1.2rem;
}

.blog-article-hero-wrapper .blog-article-meta a {
    color: rgba(255, 255, 255, 0.85);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.9rem;
    transition: color 0.2s ease;
}

.blog-article-hero-wrapper .blog-article-meta a:hover {
    color: #ffffff;
}

.blog-article-hero-wrapper .blog-category-tag {
    color: #93c5fd;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    background: rgba(37, 99, 235, 0.2);
    border: 1px solid rgba(147, 197, 253, 0.3);
    padding: 0.25rem 0.75rem;
    border-radius: 999px;
}

.blog-article-hero-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 2.8rem;
    align-items: center;
}

.blog-article-title {
    color: #ffffff;
    font-size: clamp(2rem, 3.2vw, 2.75rem);
    font-weight: 800;
    line-height: 1.2;
    letter-spacing: -0.02em;
    margin: 0;
}

.blog-hero-banner-card {
    background: rgba(255, 255, 255, 0.07);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: var(--blog-radius);
    padding: 1.8rem;
    display: flex;
    flex-direction: column;
    gap: 0.9rem;
    color: #ffffff;
}

.blog-hero-banner-card-title {
    font-size: 1.15rem;
    font-weight: 700;
    line-height: 1.3;
}

.blog-hero-banner-card-sub {
    font-size: 0.88rem;
    color: rgba(255, 255, 255, 0.85);
    line-height: 1.5;
    margin: 0;
}

.blog-hero-banner-card .btn-primary {
    background: var(--blog-blue);
    color: #ffffff;
    text-decoration: none;
    font-weight: 700;
    font-size: 0.92rem;
    padding: 0.75rem 1.4rem;
    border-radius: 8px;
    text-align: center;
    transition: background 0.2s ease;
    margin-top: 0.5rem;
}

.blog-hero-banner-card .btn-primary:hover {
    background: var(--blog-blue-hover);
}

/* Two-Column Grid: Article Left, Conversion Sidebar Right */
.blog-article-grid {
    display: grid;
    grid-template-columns: minmax(0, 2fr) 400px;
    gap: 3.2rem;
    align-items: start;
}

/* Left Editorial Body */
.blog-content-body {
    background: #ffffff;
    padding: 3.5rem;
    border-radius: var(--blog-radius);
    border: 1px solid var(--blog-border);
    box-shadow: var(--blog-shadow-sm);
    font-size: 1.05rem;
    line-height: 1.82;
    color: var(--blog-navy);
}

.blog-content-body p {
    margin: 0 0 1.5rem 0;
}

.blog-content-body h2 {
    font-size: 1.65rem;
    font-weight: 700;
    color: var(--blog-navy);
    margin: 2.8rem 0 1rem 0;
    line-height: 1.3;
    letter-spacing: -0.015em;
}

.blog-content-body h3 {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--blog-navy);
    margin: 2.2rem 0 0.85rem 0;
    line-height: 1.35;
}

.blog-content-body ul,
.blog-content-body ol {
    margin: 0 0 1.75rem 0;
    padding-left: 1.75rem;
}

.blog-content-body li {
    margin-bottom: 0.65rem;
    color: var(--blog-slate);
    line-height: 1.7;
}

.blog-content-body strong {
    color: var(--blog-navy);
    font-weight: 700;
}

/* Quick Answer Card (Google Featured Snippet Optimized) */
.article-quick-answer-card {
    background: var(--blog-blue-soft);
    border-left: 4px solid var(--blog-blue);
    border-radius: 0 var(--blog-radius) var(--blog-radius) 0;
    padding: 1.6rem 2rem;
    margin-bottom: 2.5rem;
}

.article-quick-answer-badge {
    display: inline-flex;
    align-items: center;
    background: var(--blog-blue);
    color: #ffffff;
    font-size: 0.72rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    padding: 0.25rem 0.65rem;
    border-radius: 999px;
    margin-bottom: 0.85rem;
}

.article-quick-answer-card p {
    font-size: 1.12rem;
    font-weight: 500;
    line-height: 1.65;
    color: var(--blog-navy);
    margin: 0;
}

/* Data Table Container */
.table-container {
    width: 100%;
    overflow-x: auto;
    margin: 2.5rem 0;
    border-radius: var(--blog-radius);
    border: 1px solid var(--blog-border);
    box-shadow: var(--blog-shadow-sm);
}

.article-data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.94rem;
    text-align: left;
    background: #ffffff;
}

.article-data-table th {
    background: var(--blog-navy);
    color: #ffffff;
    padding: 1rem 1.25rem;
    font-weight: 700;
    letter-spacing: 0.02em;
    white-space: nowrap;
}

.article-data-table td {
    padding: 1rem 1.25rem;
    border-bottom: 1px solid var(--blog-border);
    color: var(--blog-slate);
    line-height: 1.55;
    vertical-align: top;
}

.article-data-table tr:nth-child(even) td {
    background: #f8fafc;
}

.article-data-table tr:last-child td {
    border-bottom: none;
}

/* Agent Solution Box */
.agent-solution-box {
    background: linear-gradient(135deg, #eff6ff 0%, #f8fafc 100%);
    border: 1px solid var(--blog-blue-border);
    border-radius: var(--blog-radius);
    padding: 2.2rem;
    margin: 2.8rem 0;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.agent-solution-box-title {
    font-size: 1.28rem;
    font-weight: 800;
    color: var(--blog-navy);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.agent-solution-box p {
    font-size: 0.98rem;
    color: var(--blog-slate);
    line-height: 1.65;
    margin: 0;
}

.agent-solution-box .btn-primary {
    align-self: flex-start;
    background: var(--blog-blue);
    color: #ffffff;
    text-decoration: none;
    font-weight: 700;
    font-size: 0.94rem;
    padding: 0.85rem 1.6rem;
    border-radius: 8px;
    transition: background 0.2s ease;
}

.agent-solution-box .btn-primary:hover {
    background: var(--blog-blue-hover);
}

/* FAQ Accordion / Cards */
.geo-faq-grid {
    display: flex;
    flex-direction: column;
    gap: 1.2rem;
    margin-top: 1.8rem;
}

.geo-faq-card {
    background: #f8fafc;
    border: 1px solid var(--blog-border);
    border-radius: 10px;
    padding: 1.5rem 1.8rem;
}

.geo-faq-card h3 {
    font-size: 1.12rem;
    font-weight: 700;
    color: var(--blog-navy);
    margin: 0 0 0.6rem 0;
    line-height: 1.4;
}

.geo-faq-card p {
    font-size: 0.95rem;
    color: var(--blog-slate);
    line-height: 1.65;
    margin: 0;
}

/* ==========================================================================
   Right Sticky Sidebar: VoiceGravity Conversion Engine
   ========================================================================== */
.blog-sidebar {
    position: sticky;
    top: 90px;
    z-index: 10;
}

.blog-sidebar-banner {
    background: linear-gradient(180deg, #0b1120 0%, #172554 100%);
    box-shadow: var(--blog-shadow-lg);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: var(--blog-radius);
    padding: 2.2rem 1.8rem;
    display: flex;
    flex-direction: column;
    gap: 1.3rem;
    color: #ffffff;
}

.blog-sidebar-badge {
    align-self: flex-start;
    background: rgba(37, 99, 235, 0.25);
    border: 1px solid rgba(147, 197, 253, 0.4);
    color: #93c5fd;
    font-size: 0.72rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    padding: 0.3rem 0.75rem;
    border-radius: 999px;
}

.blog-sidebar-title {
    font-size: 1.35rem;
    font-weight: 800;
    color: #ffffff;
    line-height: 1.25;
}

.blog-sidebar-title em {
    font-style: normal;
    color: #60a5fa;
}

.blog-sidebar-text {
    font-size: 0.88rem;
    line-height: 1.6;
    color: rgba(255, 255, 255, 0.85);
    margin: 0;
}

.blog-sidebar-benefits {
    display: flex;
    flex-direction: column;
    gap: 0.85rem;
    list-style: none;
    padding: 0;
    margin: 0;
}

.blog-sidebar-benefits li {
    font-size: 0.86rem;
    color: rgba(255, 255, 255, 0.95);
    display: flex;
    align-items: flex-start;
    gap: 0.65rem;
    line-height: 1.45;
}

.blog-sidebar-benefits .benefit-check {
    background: rgba(37, 99, 235, 0.5);
    color: #93c5fd;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: 800;
    flex-shrink: 0;
    margin-top: 1px;
}

/* Sidebar Funnel Math Block */
.blog-sidebar-math {
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 10px;
    padding: 1.1rem;
    display: flex;
    flex-direction: column;
    gap: 0.65rem;
}

.blog-sidebar-math-heading {
    font-size: 0.74rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: #93c5fd;
    font-weight: 700;
}

.blog-sidebar-math-row {
    display: flex;
    justify-content: space-between;
    font-size: 0.84rem;
    color: rgba(255, 255, 255, 0.85);
}

.blog-sidebar-math-row strong {
    color: #ffffff;
}

.blog-sidebar-math-highlight {
    background: rgba(37, 99, 235, 0.35);
    border-radius: 6px;
    padding: 0.45rem 0.65rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.88rem;
    font-weight: 700;
    color: #ffffff;
}

.blog-sidebar-math-highlight span:last-child {
    color: #93c5fd;
}

.blog-sidebar-cta {
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
    margin-top: 0.4rem;
}

.blog-sidebar-banner .btn-white {
    background-color: #ffffff;
    color: var(--blog-navy);
    border: none;
    padding: 0.85rem 1.4rem;
    font-size: 0.92rem;
    border-radius: 8px;
    font-weight: 700;
    text-decoration: none;
    display: inline-block;
    text-align: center;
    transition: transform 0.2s ease, background-color 0.2s ease, box-shadow 0.2s ease;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.blog-sidebar-banner .btn-white:hover {
    background-color: #f8fafc;
    transform: translateY(-2px);
    box-shadow: 0 6px 18px rgba(0, 0, 0, 0.25);
}

.blog-sidebar-subtext {
    font-size: 0.78rem;
    color: rgba(255, 255, 255, 0.65);
    text-align: center;
}

.blog-sidebar-subtext a {
    color: #93c5fd;
    text-decoration: none;
}

.blog-sidebar-subtext a:hover {
    text-decoration: underline;
}

/* ==========================================================================
   Responsive Breakpoints
   ========================================================================== */
@media (max-width: 1080px) {
    .blog-article-grid {
        grid-template-columns: 1fr;
        gap: 2.8rem;
    }
    .blog-sidebar {
        position: static;
    }
    .blog-article-hero-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
}

@media (max-width: 768px) {
    .blog-feed-header {
        margin: 2.5rem auto 1.5rem auto;
        padding: 0 1.25rem;
    }
    .blog-filter-bar {
        padding: 0 1.25rem;
    }
    .blog-grid {
        grid-template-columns: 1fr;
        padding: 0 1.25rem 4rem 1.25rem;
    }
    .blog-article-container {
        padding: 1.5rem 1rem 3.5rem 1rem;
    }
    .blog-article-hero-wrapper {
        padding: 2.2rem 1.5rem;
        margin-bottom: 2rem;
    }
    .blog-content-body {
        padding: 2rem 1.4rem;
    }
}