:root {
    --bg-gradient: linear-gradient(135deg, #0f0c29, #1e1b41, #161630);
    --text: #e0f7ff;
    --text-muted: #a0a0c0;
    --primary: #40c4ff;
    --primary-glow: rgba(64, 196, 255, 0.35);
    --accent: #a78bfa;
    --card: rgba(30, 30, 60, 0.75);
    --border: rgba(167, 139, 250, 0.22);
    --shadow: 0 12px 48px rgba(0, 0, 0, 0.5);

    --scrollbar-bg: #0f0c29;
    --scrollbar-thumb: #1e1b41;
    --scrollbar-hover: #5967ff;
    --item-bg-muted: rgba(64, 196, 255, 0.07);
    --item-bg-hover: rgba(64, 196, 255, 0.18);
    
    --btn-grad-start: #3a9eff;
    --btn-grad-end: #7a5aff;
    
    --white: #ffffff;
    --black: #000000;
    --label-color: #d0d8e8;
    --surface-darker: rgba(15, 12, 41, 0.5); 
}

.light-theme {
    --bg-gradient: linear-gradient(135deg, #f0f4f8, #e2e8f0, #d1d9e6);
    --card: rgba(255, 255, 255, 0.9);
    --border: rgba(0, 86, 179, 0.15);
    --shadow: 0 12px 48px rgba(0, 0, 0, 0.08);
    
    --text: #1e293b;
    --text-muted: #334155;
    
    --primary: #0056b3;
    --primary-glow: rgba(0, 86, 179, 0.15);
    --accent: #553c9a;
    
    --scrollbar-bg: #f1f5f9;
    --scrollbar-thumb: #cbd5e0;
    --scrollbar-hover: #0056b3;
    
    --item-bg-muted: rgba(0, 86, 179, 0.08);
    --item-bg-hover: rgba(0, 86, 179, 0.12);
    
    --btn-grad-start: #0056b3;
    --btn-grad-end: #553c9a;
    
    --label-color: #1e293b; 
    --surface-darker: #f8fafc; 
}


*, *::before, *::after {
    transition: background-color 0.4s ease, color 0.3s ease, border-color 0.3s ease;
}

html,
body {
    width: 100% !important;
    overflow-x: hidden !important;
    margin: 0 !important;
    padding: 0 !important;
    scroll-behavior: smooth !important;
    scroll-padding-top: 110px !important;
}

body {
    background: var(--bg-gradient);
    color: var(--text);
    font-family: "Tektur", sans-serif;
    min-height: 100vh;
    line-height: 1.6;
    transition: background 0.3s ease, color 0.3s ease;
}

::-webkit-scrollbar {
    width: 12px; 
}

::-webkit-scrollbar-track {
    background: var(--scrollbar-bg); 
}

::-webkit-scrollbar-thumb {
    background: var(--scrollbar-thumb); 
    border-radius: 10px;
    border: 3px solid var(--scrollbar-bg); 
}

::-webkit-scrollbar-thumb:hover {
    background: var(--scrollbar-hover); 
}

.container {
    width: 90%;
    max-width: 1100px;
    margin: 0 auto;
    padding: 1rem 0;
}












/* --- Reading Progress Bar --- */
.progress-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: transparent;
    z-index: 2000;
}

.post-header-area {
    display: flex;
    flex-direction: column; 
    align-items: flex-start;
    margin-bottom: 40px;
    width: 100%;
}

.post-title {
    font-family: 'Space Grotesk', sans-serif;
    font-size: clamp(2.2rem, 6vw, 3.8rem);
    margin: 15px 0 30px;
    line-height: 1.1;
    color: var(--text); 
    letter-spacing: -1.5px;
}

.hero-image {
    width: 100%;
    height: auto;
    border-radius: 24px;
    box-shadow: var(--shadow);
    margin-top: 20px;
}

.progress-bar {
    height: 100%;
    background: linear-gradient(to right, var(--primary), var(--accent));
    width: 0%; 
    transition: width 0.1s ease-out;
}

/* --- Main Layout --- */
.post-wrapper {
    max-width: 1200px;
    margin: 140px auto 80px;
    padding: 0 25px;
    display: grid;
    grid-template-columns: 1fr 320px; 
    gap: 60px;
    align-items: start;
}

.post-content {
    min-width: 0; 
    overflow-wrap: break-word;
}

/* --- Sidebar & Author Card --- */
.post-sidebar {
    position: sticky;
    top: 120px;
    display: flex;
    flex-direction: column;
    gap: 40px;
}

.author-card {
    background: var(--card);
    border: 1px solid var(--border);
    padding: clamp(15px, 3vw, 25px); 
    border-radius: 24px;
    backdrop-filter: blur(12px);
    box-shadow: var(--shadow);
    transition: transform 0.3s ease;
}

.author-card:hover .author-img {
    box-shadow: 0 0 30px var(--primary);
}

.author-card h4 {
    font-family: 'Orbitron', sans-serif;
    color: var(--primary);
    margin-bottom: 5px;
}

.profile-img-container {
    width: 80%;
    height: auto;
    margin-bottom: 20px;
    position: relative;
    margin: 0 auto;
}

.author-img {
    width: 100%;
    height: 100%;
    object-fit: cover; 
    border-radius: 50%; 
    border: 2px solid var(--primary);
    box-shadow: 0 0 20px var(--primary-glow);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.author-sub {
    font-size: 0.8rem;
    color: var(--text-muted);
    font-weight: 600;
    text-transform: uppercase;
}

.sidebar-hr {
    margin: 15px 0;
    border: 0;
    border-top: 1px solid var(--border);
}

.tag-cloud {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 15px;
}

/* --- Content Styling --- */
.back-btn {
    color: var(--primary);
    text-decoration: none;
    font-weight: 700;
    font-size: 0.9rem;
    transition: transform 0.3s ease;
    display: inline-block;
    margin-bottom: 25px;
}

.back-btn:hover {
    transform: translateX(-5px);
}

.post-meta {
    color: var(--text-muted);
    font-size: 0.85rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 1.5px;
}

.post-title {
    font-family: 'Space Grotesk', sans-serif;
    font-size: clamp(2.2rem, 6vw, 3.8rem);
    margin: 15px 0 35px;
    line-height: 1;
    color: var(--text);
    letter-spacing: -1.5px;
}

.hero-image {
    max-width: 100%;
    height: auto;
    aspect-ratio: 16 / 9;
    object-fit: cover;
    border-radius: 24px;
    margin-bottom: 50px;
    box-shadow: var(--shadow);
}

/* --- Body Typography --- */
.post-body {
    font-size: clamp(1rem, 2vw, 1.15rem);
    max-width: 100%;
}

.post-body h2, .post-body h3 {
    margin: 50px 0 20px;
    font-family: 'Orbitron', sans-serif;
    color: var(--text);
    letter-spacing: 1px;
}

.lead {
    font-size: 1.4rem;
    font-weight: 500;
    color: var(--primary);
    line-height: 1.6;
    margin-bottom: 30px;
}

blockquote {
    border-left: 5px solid var(--primary);
    background: var(--primary-glow);
    padding: 30px;
    margin: 40px 0;
    border-radius: 0 15px 15px 0;
    font-style: italic;
    font-size: 1.25rem;
    color: var(--text-muted);
}

pre {
    background: var(--surface-darker);
    padding: 25px;
    border-radius: 16px;
    overflow-x: auto; 
    border: 1px solid var(--border);
    margin: 35px 0;
}

code {
    font-family: 'Courier New', monospace;
    font-size: 0.95rem;
    color: var(--accent);
}









.comment-section {
    width: 100%;
    padding: 60px 0;
    margin-top: 40px;
    border-top: 1px solid var(--border);
    background: transparent;
}

body.light-theme .comment-section {
    background: var(--bg-gradient); 
}

body.light-theme .section-title {
    color: var(--text);
}

.section-title {
    font-family: 'Orbitron', sans-serif;
    font-size: 1.5rem;
    margin-bottom: 40px;
    color: var(--text);
    letter-spacing: 2px;
    text-transform: uppercase;
}

.giscus {
    width: 100%;
    margin-top: 20px;
    min-height: 250px; 
}

.comment-form-card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 20px;
    backdrop-filter: blur(10px);
    margin-bottom: 40px;
}

.comment-form-card textarea {
    width: 100%;
    min-height: 100px;
    background: transparent;
    border: none;
    color: var(--text);
    font-family: 'Inter', sans-serif;
    resize: vertical;
    outline: none;
    font-size: 1rem;
}

.form-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 15px;
    padding-top: 15px;
    border-top: 1px solid var(--border);
}

.comment-note {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.submit-btn {
    background: linear-gradient(135deg, var(--btn-grad-start), var(--btn-grad-end));
    color: white;
    border: none;
    padding: 10px 24px;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.submit-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px var(--primary-glow);
}

/* Individual Comment Styling */
.comment-item {
    display: flex;
    gap: 15px;
    margin-bottom: 30px;
}

.comment-avatar {
    width: 45px;
    height: 45px;
    border-radius: 50%;
    background: var(--primary-glow);
    flex-shrink: 0;
    border: 1px solid var(--border);
}

.comment-header {
    margin-bottom: 5px;
}

.comment-author {
    font-weight: 700;
    color: var(--primary);
    margin-right: 10px;
}

.comment-date {
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* --- Post Navigation --- */
.post-navigation {
    display: flex;
    justify-content: space-between;
    gap: 20px;
    margin: 60px 0;
    padding-top: 40px;
    border-top: 1px solid var(--border);
}

.nav-box {
    flex: 1;
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 16px;
    transition: all 0.3s ease;
}

.nav-box a {
    display: flex;
    flex-direction: column;
    padding: 25px;
    text-decoration: none;
    height: 100%;
}

.nav-label {
    font-family: 'Orbitron', sans-serif;
    font-size: 0.7rem;
    color: var(--primary);
    letter-spacing: 2px;
    margin-bottom: 10px;
}

.nav-title {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 1.1rem;
    color: var(--text);
    font-weight: 600;
    line-height: 1.3;
}

/* Hover Effects */
.nav-box:hover {
    transform: translateY(-5px);
    border-color: var(--primary);
    box-shadow: 0 10px 30px var(--primary-glow);
}

.nav-box.next {
    text-align: right;
}

/* --- Navigation Responsiveness --- */
@media (max-width: 600px) {
    .post-navigation {
        flex-direction: column;
        gap: 15px;
    }
    
    .nav-box a {
        padding: 20px;
    }
}


@media (max-width: 1100px) {
    .post-wrapper {
        gap: 30px;
        grid-template-columns: 1fr 260px;
    }
}


@media (max-width: 1024px) {
    .post-wrapper {
        grid-template-columns: 1fr; 
        gap: 40px;
        margin-top: 100px;
    }

    .post-sidebar {
        position: static; 
        flex-direction: row; 
        flex-wrap: wrap; 
        gap: 20px;
    }

    .author-card, .related-topics {
        flex: 1; 
        min-width: 300px; 
    }

    .profile-img-container {
        width: 100px; 
        margin: 0 0 15px 0;
    }
}
/* --- Tablet Adjustments --- */
@media (max-width: 1000px) {
    .post-wrapper {
        grid-template-columns: 1fr; 
        margin-top: 100px;
    }

    .post-sidebar {
        position: static; 
        width: 100%;
        display: grid;
        grid-template-columns: 1fr 1fr; 
        gap: 20px;
    }
    
    .author-card {
        width: 80%;
    }

    .hero-image {
        margin-bottom: 30px;
    }
}

@media (max-width: 900px) {
    .post-sidebar {
        position: static; 
        display: grid;
        grid-template-columns: 1.2fr 1fr; 
        gap: 20px;
        margin-top: 40px;
        width: 100%;
    }

    .profile-img-container {
        width: 100px; 
        margin: 0 0 15px 0;
    }

    .author-card {
        display: flex;
        flex-direction: column;
        justify-content: center;
    }
}

@media (max-width: 700px) {
    .post-wrapper {
        padding: 0 20px;
        margin-top: 80px;
    }

    .post-sidebar {
        grid-template-columns: 1fr; 
    }

    .author-card {
        text-align: center;
        align-items: center;
        padding: 25px 20px;
    }

    .profile-img-container {
        width: 90px;
        margin: 0 auto 15px; 
    }

    .tag-cloud {
        justify-content: center; 
    }

    .post-title {
        font-size: 2.2rem; 
    }

    .hero-image {
        border-radius: 16px; 
        margin-bottom: 30px;
    }
}


/* --- Mobile Adjustments --- */
@media (max-width: 580px) {
    .post-sidebar {
        grid-template-columns: 1fr; 
    }

    .container {
        padding: 1em;
    }

    .post-wrapper {
        padding: 0 15px;
        margin-top: 80px;
    }

    blockquote {
        padding: 20px;
        margin: 20px 0;
        font-size: 1.1rem;
    }

    .author-card{
        width: 80%;
    }

    pre {
        padding: 15px;
        font-size: 0.85rem;
    }
}