:root {
    --bg-dark: #090a0f;
    --card-dark: #12141c;
    --accent-color: #3b82f6;
    --text-main: #f3f4f6;
    --text-muted: #9ca3af;
    --border-color: #1e2433;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, sans-serif;
}

body.dark-theme {
    background-color: var(--bg-dark);
    color: var(--text-main);
    line-height: 1.6;
    padding-top: 85px;
}

/* Header UI Architecture */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(9, 10, 15, 0.85);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 6%;
    z-index: 1000;
}

.logo-link {
    display: inline-block;
    text-decoration: none;
    transition: transform 0.2s ease;
}

.logo-link:hover {
    transform: scale(1.02);
}

.vecords-logo-svg {
    display: block;
    height: auto;
    max-width: 100%;
}

.nav a {
    color: var(--text-muted);
    text-decoration: none;
    margin-left: 25px;
    font-weight: 500;
    font-size: 0.95rem;
    transition: color 0.3s ease;
}

.nav a:hover, .nav a.active {
    color: var(--text-main);
    border-bottom: 2px solid var(--accent-color);
    padding-bottom: 4px;
}

/* Layout Utilities */
.container {
    max-width: 850px;
    margin: 40px auto;
    padding: 0 24px;
}

.divider {
    border: 0;
    height: 1px;
    background: var(--border-color);
    margin: 40px 0;
}

/* Feed & Hub Formatting */
.hub-intro {
    margin-bottom: 45px;
}

.page-title {
    font-size: 2.2rem;
    font-weight: 800;
    letter-spacing: -0.5px;
    margin-bottom: 8px;
}

.page-title span {
    color: var(--accent-color);
}

.lead-text {
    color: var(--text-muted);
    font-size: 1.05rem;
}

/* Dynamic Grid Ecosystem */
.articles-grid-container {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

@media (max-width: 768px) {
    .articles-grid-container {
        grid-template-columns: 1fr;
    }
}

.article-card {
    background: var(--card-dark);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1), border-color 0.3s ease;
}

.article-card:hover {
    transform: translateY(-4px);
    border-color: var(--accent-color);
}

.card-img-holder {
    width: 100%;
    height: 190px;
    background: #06070a;
}

.card-img-holder img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.card-details {
    padding: 24px;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.card-heading {
    font-size: 1.3rem;
    font-weight: 700;
    line-height: 1.4;
    margin-bottom: 12px;
}

.card-heading a {
    color: var(--text-main);
    text-decoration: none;
}

.card-excerpt {
    color: var(--text-muted);
    font-size: 0.95rem;
    line-height: 1.6;
    margin-bottom: 20px;
}

.card-link-btn {
    margin-top: auto;
    color: var(--accent-color);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 600;
}

/* Individual Post Elements */
.meta-data {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin: 12px 0 25px 0;
}

.meta-data span {
    color: var(--text-main);
    font-weight: 500;
}

.main-image-wrapper {
    width: 100%;
    border-radius: 12px;
    overflow: hidden;
    margin-bottom: 35px;
    border: 1px solid var(--border-color);
}

.main-image-wrapper img {
    width: 100%;
    display: block;
}

#post-body p {
    font-size: 1.1rem;
    line-height: 1.75;
    margin-bottom: 24px;
    color: #e5e7eb;
}

#post-body h2 {
    font-size: 1.6rem;
    margin: 40px 0 20px 0;
    color: var(--text-main);
    letter-spacing: -0.3px;
}

/* Portfolio Details CSS */
.profile-hero h1 {
    font-size: 3rem;
    font-weight: 800;
    letter-spacing: -0.8px;
    margin-bottom: 8px;
}

.subtitle {
    font-size: 1.25rem;
    color: var(--accent-color);
    margin-bottom: 20px;
    font-weight: 600;
}

.bio {
    color: var(--text-muted);
    font-size: 1.15rem;
    max-width: 700px;
}

.social-links {
    margin-top: 25px;
}

.social-links a {
    color: var(--text-main);
    font-size: 1.6rem;
    margin-right: 24px;
    transition: transform 0.2s ease, color 0.2s ease;
    display: inline-block;
}

.social-links a:hover {
    transform: translateY(-3px);
    color: var(--accent-color);
}

.skills-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-top: 25px;
}

@media (max-width: 600px) {
    .skills-grid {
        grid-template-columns: 1fr;
    }
}

.skill-card {
    background: var(--card-dark);
    padding: 20px;
    border-radius: 10px;
    border: 1px solid var(--border-color);
    font-size: 1rem;
    color: var(--text-muted);
}

.skill-card strong {
    color: var(--text-main);
    display: block;
    margin-bottom: 6px;
}

.project-item {
    background: var(--card-dark);
    padding: 30px;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    margin-top: 25px;
}

.project-tech {
    font-size: 0.85rem;
    color: var(--accent-color);
    font-weight: 600;
    margin-bottom: 12px;
    letter-spacing: 0.5px;
}

.project-item p {
    color: var(--text-muted);
}

.legacy-link {
    display: inline-block;
    margin-top: 20px;
    color: var(--text-main);
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 600;
}

.legacy-link:hover {
    text-decoration: underline;
    color: var(--accent-color);
}

.loader-state {
    text-align: center;
    padding: 60px 0;
    color: var(--text-muted);
    font-style: italic;
}

.footer {
    text-align: center;
    padding: 50px 0;
    color: var(--text-muted);
    font-size: 0.9rem;
    border-top: 1px solid var(--border-color);
    margin-top: 80px;
}