/* ===== ARC144-INSPIRED BLOG STYLES v3 ===== */
:root {
    --bg-primary: #080a0b;
    --bg-secondary: #0c0f11;
    --text-primary: #e8eaed;
    --text-secondary: #7a8a8e;
    --accent: #269dae;
    --accent-dark: #1e8494;
    --accent-rgb: 38, 157, 174;
    --border: rgba(255, 255, 255, 0.06);
    --glass-border: rgba(255, 255, 255, 0.06);
    --font-mono: 'JetBrains Mono', 'Courier New', monospace;
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    font-family: var(--font-sans);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Navigation */
nav {
    background-color: rgba(8, 10, 11, 0.9);
    border-bottom: 1px solid var(--border);
    padding: 0.9rem 3rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 1000;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
}

.nav-logo {
    font-size: 1rem;
    font-weight: 700;
    text-decoration: none;
    color: var(--text-primary);
    font-family: var(--font-mono);
    letter-spacing: 0.05em;
    display: flex;
    align-items: center;
    gap: 0.3rem;
}

.nav-logo .icon {
    width: 18px;
    height: 18px;
    border: 1.5px solid var(--accent);
    border-radius: 3px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 0.6rem;
    color: var(--accent);
}

.nav-logo span {
    color: var(--accent);
}

.nav-links {
    display: flex;
    gap: 2rem;
    flex: 1;
    justify-content: center;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-family: var(--font-mono);
    font-size: 0.72rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    font-weight: 500;
    transition: color 0.3s ease;
    padding-bottom: 4px;
    border-bottom: 1.5px solid transparent;
}

.nav-link:hover,
.nav-link.active {
    color: var(--text-primary);
    border-bottom-color: var(--accent);
}

/* Corner bracket CTA button */
.nav-cta,
.btn-bracket {
    position: relative;
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    font-family: var(--font-mono);
    font-size: 0.78rem;
    font-weight: 500;
    color: var(--text-primary);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    padding: 0.7rem 1.5rem;
    background: transparent;
    border: none;
    cursor: pointer;
    text-decoration: none;
    transition: all 0.3s cubic-bezier(0.6, 0.6, 0, 1);
}

.nav-cta::before,
.nav-cta::after,
.btn-bracket::before,
.btn-bracket::after {
    content: '';
    position: absolute;
    width: 12px;
    height: 12px;
    border-color: var(--accent);
    border-style: solid;
    transition: all 0.3s cubic-bezier(0.6, 0.6, 0, 1);
}

.nav-cta::before,
.btn-bracket::before {
    top: 0;
    left: 0;
    border-width: 1.5px 0 0 1.5px;
}

.nav-cta::after,
.btn-bracket::after {
    bottom: 0;
    right: 0;
    border-width: 0 1.5px 1.5px 0;
}

.nav-cta:hover::before,
.nav-cta:hover::after,
.btn-bracket:hover::before,
.btn-bracket:hover::after {
    width: 100%;
    height: 100%;
}

.nav-cta:hover,
.btn-bracket:hover {
    color: var(--accent);
    text-shadow: 0 0 20px rgba(38, 157, 174, 0.3);
    text-decoration: none;
}

.nav-cta .dot,
.btn-bracket .dot {
    width: 5px;
    height: 5px;
    background: var(--accent);
    border-radius: 50%;
    animation: dotPulse 2s ease-in-out infinite;
}

@keyframes dotPulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.4; transform: scale(0.6); }
}

/* Main Content */
main {
    max-width: 720px;
    margin: 0 auto;
    padding: 4rem 2rem;
    min-height: 80vh;
}

.article-header {
    margin-bottom: 3rem;
}

.reading-time {
    display: inline-block;
    background-color: rgba(38, 157, 174, 0.05);
    border: 1px solid rgba(38, 157, 174, 0.15);
    color: var(--accent);
    padding: 0.5rem 1rem;
    border-radius: 2px;
    font-size: 0.8rem;
    font-family: var(--font-mono);
    margin-bottom: 1.5rem;
    letter-spacing: 0.05em;
}

h1 {
    font-size: 2.5rem;
    line-height: 1.2;
    margin-bottom: 1rem;
    color: var(--text-primary);
    font-weight: 700;
}

.article-meta {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 2rem;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    letter-spacing: 0.05em;
}

h2 {
    font-size: 1.75rem;
    margin-top: 3rem;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
    font-weight: 700;
    padding-bottom: 0.5rem;
    border-bottom: 1.5px solid var(--accent);
}

h2:first-of-type {
    margin-top: 0;
}

h3 {
    font-size: 1.25rem;
    margin-top: 2rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
    font-weight: 600;
}

p {
    margin-bottom: 1.5rem;
    line-height: 1.8;
    font-size: 1.05rem;
    color: var(--text-secondary);
}

strong {
    color: var(--accent);
    font-weight: 600;
}

em {
    color: var(--text-primary);
}

a {
    color: var(--accent);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

a:hover {
    color: var(--accent-dark);
    text-decoration: underline;
}

ul, ol {
    margin: 1.5rem 0 1.5rem 1.5rem;
    line-height: 1.8;
}

li {
    margin-bottom: 0.8rem;
    color: var(--text-secondary);
}

li::marker {
    color: var(--accent);
}

.highlight-box {
    background-color: rgba(38, 157, 174, 0.03);
    border-left: 2px solid var(--accent);
    padding: 1.5rem;
    border-radius: 2px;
    margin: 2rem 0;
    box-shadow: 0 0 20px rgba(38, 157, 174, 0.03);
}

.highlight-box p {
    margin: 0;
}

.comparison-table {
    width: 100%;
    margin: 2rem 0;
    border-collapse: collapse;
    background-color: rgba(255, 255, 255, 0.01);
    border: 1px solid var(--border);
    border-radius: 4px;
    overflow: hidden;
}

.comparison-table th,
.comparison-table td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid var(--border);
}

.comparison-table th {
    background-color: rgba(38, 157, 174, 0.08);
    color: var(--accent);
    font-weight: 600;
    font-family: var(--font-mono);
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

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

.comparison-table tr:hover td {
    background-color: rgba(38, 157, 174, 0.02);
}

code {
    background-color: rgba(38, 157, 174, 0.08);
    padding: 0.25rem 0.5rem;
    border-radius: 2px;
    font-family: var(--font-mono);
    color: var(--accent);
    font-size: 0.9em;
}

/* CTA Banner */
.cta-banner {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.03) 0%, rgba(255, 255, 255, 0) 100%);
    border: 1px solid var(--glass-border);
    border-radius: 4px;
    padding: 2.5rem 2rem;
    margin: 3rem auto;
    max-width: 600px;
    text-align: center;
    position: relative;
    box-shadow: 0 10px 10px 0 rgba(255, 255, 255, 0.01) inset, 0 0 12px 0 rgba(255, 255, 255, 0.02) inset;
}

.cta-banner h3 {
    margin-top: 0;
    font-size: 1.5rem;
}

.cta-banner p {
    margin-bottom: 1.5rem;
}

.cta-button {
    position: relative;
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    font-family: var(--font-mono);
    font-size: 0.82rem;
    font-weight: 500;
    color: var(--text-primary);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    padding: 0.8rem 2rem;
    background: transparent;
    border: none;
    cursor: pointer;
    text-decoration: none;
    transition: all 0.3s cubic-bezier(0.6, 0.6, 0, 1);
}

.cta-button::before,
.cta-button::after {
    content: '';
    position: absolute;
    width: 12px;
    height: 12px;
    border-color: var(--accent);
    border-style: solid;
    transition: all 0.3s cubic-bezier(0.6, 0.6, 0, 1);
}

.cta-button::before {
    top: 0;
    left: 0;
    border-width: 1.5px 0 0 1.5px;
}

.cta-button::after {
    bottom: 0;
    right: 0;
    border-width: 0 1.5px 1.5px 0;
}

.cta-button:hover::before,
.cta-button:hover::after {
    width: 100%;
    height: 100%;
}

.cta-button:hover {
    color: var(--accent);
    text-shadow: 0 0 20px rgba(38, 157, 174, 0.3);
    text-decoration: none;
}

/* Footer */
footer {
    background-color: var(--bg-secondary);
    border-top: 1px solid var(--border);
    padding: 2rem 3rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 900px;
    margin: 4rem auto 0;
    color: var(--text-secondary);
    font-size: 0.78rem;
    font-family: var(--font-mono);
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

footer a {
    color: var(--accent);
    transition: color 0.3s ease;
}

footer a:hover {
    color: var(--accent-dark);
}

/* CTA Section (blog index) */
.cta-section {
    max-width: 600px;
    margin: 3rem auto;
    text-align: center;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.03) 0%, rgba(255, 255, 255, 0) 100%);
    border: 1px solid var(--glass-border);
    border-radius: 4px;
    padding: 2.5rem 2rem;
    box-shadow: 0 10px 10px 0 rgba(255, 255, 255, 0.01) inset, 0 0 12px 0 rgba(255, 255, 255, 0.02) inset;
}

.cta-section h2 {
    font-size: 1.5rem;
    margin-bottom: 0.8rem;
}

.cta-section p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    font-size: 0.95rem;
}

.cta-section .cta-btn {
    font-family: var(--font-mono);
    font-size: 0.82rem;
    color: var(--accent);
    text-decoration: none;
    letter-spacing: 0.05em;
    transition: color 0.3s ease;
}

.cta-section .cta-btn:hover {
    color: var(--text-primary);
}

/* Blog Grid */
.blog-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.2rem;
    margin-top: 2rem;
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
}

.blog-card {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.03) 0%, rgba(255, 255, 255, 0) 100%);
    border: 1px solid var(--glass-border);
    border-radius: 4px;
    padding: 1.5rem;
    text-decoration: none;
    color: var(--text-primary);
    display: block;
    transition: all 0.3s cubic-bezier(0.6, 0.6, 0, 1);
    box-shadow: 0 10px 10px 0 rgba(255, 255, 255, 0.01) inset, 0 0 12px 0 rgba(255, 255, 255, 0.02) inset;
}

.blog-card:hover {
    border-color: rgba(38, 157, 174, 0.2);
    box-shadow: 0 0 16px 0 rgba(38, 157, 174, 0.15);
    text-decoration: none;
    transform: translateY(-2px);
}

.card-tag {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 0.65rem;
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 0.8rem;
    padding: 0.3rem 0.6rem;
    background: rgba(38, 157, 174, 0.08);
    border-radius: 2px;
}

.card-title {
    font-size: 1.05rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    line-height: 1.4;
    color: var(--text-primary);
}

.card-desc {
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 1rem;
}

.card-meta {
    font-family: var(--font-mono);
    font-size: 0.68rem;
    color: var(--text-secondary);
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

/* Responsive */
@media (max-width: 768px) {
    nav {
        flex-direction: column;
        gap: 1rem;
        padding: 0.8rem 1.5rem;
    }

    .nav-links {
        gap: 1rem;
        margin: 0.5rem 0;
        flex-wrap: wrap;
        justify-content: center;
    }

    main {
        padding: 2rem 1rem;
    }

    h1 {
        font-size: 1.75rem;
    }

    h2 {
        font-size: 1.4rem;
    }

    h3 {
        font-size: 1.1rem;
    }

    .comparison-table th,
    .comparison-table td {
        padding: 0.75rem;
    }

    .cta-banner {
        padding: 1.5rem;
    }

    footer {
        flex-direction: column;
        gap: 0.5rem;
        text-align: center;
        padding: 2rem 1.5rem;
    }

    .blog-grid {
        grid-template-columns: 1fr;
        max-width: 100%;
    }
}