/* Global Styles & Reset */
:root {
    --starlight-deep: #020617;
    --primary: #f8fafc;
    --secondary: #94a3b8;
    --accent: #00d4ff;
    --highlight: rgba(0, 212, 255, 0.1);
    --accent-glow: rgba(0, 212, 255, 0.35);
}

.container {
    max-width: 1280px;
    width: 100%;
    margin: 0 auto;
    padding: 0 1.5rem;
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.nav-header {
    padding: 0;
    gap: 0;
}

body {
    background-color: var(--starlight-deep) !important;
    color: var(--primary);
    font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    min-height: 100-vh;
    margin: 0;
    overflow-x: hidden;
}

/* Main Content Layout */
main {
    max-width: 1280px;
    margin: 0 auto;
    padding: 6rem 1.5rem;
}

main > div {
    display: grid;
    grid-template-columns: 1fr;
    gap: 4rem;
}

@media (min-width: 1024px) {
    main > div {
        grid-template-columns: repeat(12, minmax(0, 1fr));
    }
    
    article {
        grid-column: span 8 / span 8;
    }
    
    aside {
        grid-column: span 4 / span 4;
    }
}

/* Article Styles */
article {
    display: flex;
    flex-direction: column;
    gap: 2.5rem; /* Standard content gap (40px) */
}

/* Major section transitions (Header and Featured Image) */
article > header, 
article > div:nth-child(2) {
    margin-bottom: 1.5rem; /* Adds to the 2.5rem gap to create a 4rem (64px) gap */
}

/* Article Tags section transition */
article > div:last-of-type {
    margin-top: 1.5rem; /* Creates the larger 4rem gap before tags */
}

article > header {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

article > header > div:first-child {
    display: flex;
    align-items: center;
    gap: 1rem;
    font-size: 0.875rem;
    color: var(--secondary);
}

article > header > div:last-child {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding-top: 1rem;
}

article > header > div:last-child p:first-child {
    font-weight: 700;
    text-transform: uppercase;
    font-size: 0.75rem;
    letter-spacing: 0.1em;
    margin: 0;
}

article > header > div:last-child p:last-child {
    font-size: 0.75rem;
    color: var(--secondary);
    font-weight: 500;
    margin: 0;
}

/* Featured Image */
article > div:nth-child(2) {
    border-radius: 1rem;
    overflow: hidden;
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(8px);
    padding: 0.25rem;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

article > div:nth-child(2) > div {
    aspect-ratio: 16 / 9;
    background-color: rgba(0, 0, 0, 0.4);
    border-radius: 0.75rem;
    position: relative;
    overflow: hidden;
}

article > div:nth-child(2) img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* Content Body */
article > p:first-of-type {
    font-size: 1.5rem;
    font-weight: 500;
    color: var(--primary);
}

article p {
    font-size: 1.125rem;
    line-height: 1.75;
    color: #cbd5e1;
    margin-bottom: 0;
}

h2 {
    font-size: 1.875rem;
    font-weight: 600;
    margin: 0;
}

/* Tags */
article > div:last-of-type {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    padding-top: 2rem;
    margin-top: 3rem;
}

article > div:last-of-type span {
    font-size: 0.875rem;
    color: #64748b;
    margin-right: 0.5rem;
}

aside {
    gap: 2rem;
}

aside > div:last-child h3 {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: #64748b;
}

aside > div:last-child a {
    display: block;
    background: rgba(255, 255, 255, 0.03);
    backdrop-filter: blur(8px);
    padding: 1rem;
    border-radius: 0.75rem;
    text-decoration: none;
    margin-bottom: 1rem;
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: background 0.3s;
}

aside > div:last-child a:hover {
    background: rgba(255, 255, 255, 0.05);
}

aside > div:last-child h4 {
    font-weight: 700;
    color: var(--primary);
    margin: 0;
}

aside > div:last-child a p {
    font-size: 0.75rem;
    color: #64748b;
    margin: 0.25rem 0 0;
}

/* Theme Toggle (Re-used from original) */
.theme-toggle {
    cursor: pointer;
    width: 2.5rem;
    height: 2.5rem;
    border-radius: 50%;
    transition: background 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.theme-toggle:hover {
    background: rgba(255, 255, 255, 0.1);
}

html[data-theme="light"] .theme-toggle:hover {
    background: rgba(0, 0, 0, 0.05);
}

html[data-theme="light"] {
    background-color: #f8fafc;
    color: #1e293b;
}

html[data-theme="light"] body {
    background-color: #f8fafc !important;
    color: #1e293b;
}

html[data-theme="light"] .nav-header {
    background: rgba(248, 250, 252, 0.9);
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
}

html[data-theme="light"] h1,
html[data-theme="light"] h2,
html[data-theme="light"] h3,
html[data-theme="light"] h4 {
    color: #0f172a !important;
}

html[data-theme="light"] article p,
html[data-theme="light"] .card p,
html[data-theme="light"] .glass p,
html[data-theme="light"] .blue-card {
    color: #1e293b !important;
}

html[data-theme="light"] .glass {
    background: rgba(255, 255, 255, 0.8) !important;
    border-color: rgba(0, 0, 0, 0.1) !important;
}

html[data-theme="light"] .card {
    background: white;
    border-color: #e2e8f0;
}

html[data-theme="light"] aside > div:last-child a {
    background: rgba(0, 0, 0, 0.02);
    border-color: rgba(0, 0, 0, 0.05);
}

html[data-theme="light"] aside > div:last-child a:hover {
    background: rgba(0, 0, 0, 0.04);
}

html[data-theme="light"] .code-window {
    background: #f1f5f9;
    border-color: #e2e8f0;
}

html[data-theme="light"] .code-window pre {
    color: #1e293b;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: .5; }
}