/* ============================================
   Dark Glassmorphism Article Design
   ============================================ */

:root {
    /* Dark Theme Colors */
    --bg-primary: #0a0a0f;
    --bg-secondary: #12121a;
    --bg-tertiary: #1a1a25;

    /* Glass Colors */
    --glass-bg: rgba(255, 255, 255, 0.03);
    --glass-bg-hover: rgba(255, 255, 255, 0.06);
    --glass-border: rgba(255, 255, 255, 0.08);
    --glass-border-hover: rgba(255, 255, 255, 0.15);

    /* Accent Colors */
    --accent-primary: #00d4aa;
    --accent-secondary: #7c3aed;

    /* Text Colors */
    --text-primary: #ffffff;
    --text-secondary: rgba(255, 255, 255, 0.7);
    --text-muted: rgba(255, 255, 255, 0.5);

    /* Shadows */
    --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.5);

    /* Border Radius */
    --radius-md: 16px;
    --radius-lg: 24px;
}

/* Base */
body {
    background: var(--bg-primary);
    color: var(--text-primary);
    font-family: Peyda-Bold, system-ui, sans-serif;
    direction: rtl;
    margin: 0;
    min-height: 100vh;
}

/* ============================================
   دکمه برگشت
   ============================================ */
.back-btn {
    position: fixed;
    top: 24px;
    right: 24px;
    z-index: 1000;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 20px;
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: 100px;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    transition: all 0.3s ease;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.back-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--accent-primary);
    color: var(--accent-primary);
    transform: translateX(5px);
    box-shadow: 0 0 25px rgba(0, 212, 170, 0.2);
}

.back-btn svg {
    transition: transform 0.3s ease;
}

.back-btn:hover svg {
    transform: translateX(4px);
}

/* ============================================
   Main Container
   ============================================ */
.main-container {
    position: relative;
}

.single-article-paper {
    background: transparent;
}

/* ============================================
   Hero Header
   ============================================ */
.post-header {
    position: relative;
    min-height: 70vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 100px 20px 80px;
    text-align: center;
    background-size: cover !important;
    background-position: center !important;
    border-bottom: 1px solid var(--glass-border);
}

.post-header::before {
    content: "";
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 150px;
    background: linear-gradient(to top, var(--bg-primary), transparent);
    pointer-events: none;
}

.header-content {
    position: relative;
    z-index: 2;
    max-width: 900px;
}

/* Meta Badges */
.meta-badges {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 28px;
}

.badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 18px;
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: 100px;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-secondary);
    transition: all 0.3s ease;
}

.badge:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: var(--glass-border-hover);
}

.time-badge {
    color: var(--accent-primary);
    border-color: rgba(0, 212, 170, 0.2);
}

/* Main Title */
.post-main-title {
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 800;
    line-height: 1.25;
    margin: 0 auto 24px;
    max-width: 800px;
    color: var(--text-primary);
    text-shadow: 0 4px 30px rgba(0, 0, 0, 0.5);
}

/* Post Lead */
.post-lead {
    font-size: clamp(1rem, 2vw, 1.2rem);
    color: var(--text-muted);
    max-width: 700px;
    margin: 0 auto 32px;
    font-weight: 400;
    line-height: 1.8;
    font-style: italic;
}

/* Author Card */
.author-card {
    display: inline-flex;
    align-items: center;
    padding: 14px 28px;
    background: rgba(255, 255, 255, 0.04);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: 100px;
}

.author-info-text {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.author-info-text strong {
    color: var(--accent-primary);
}

.separator {
    color: var(--text-muted);
    opacity: 0.5;
}

/* ============================================
   Article Body
   ============================================ */
.article-body-wrapper {
    max-width: 900px;
    margin: 0 auto;
    padding: 60px 20px 100px;
}

.post-content {
    position: relative;
}

/* Content Card */
.content-card {
    background: rgba(255, 255, 255, 0.02);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.main-cover-img {
    width: 100%;
    height: auto;
    max-height: 500px;
    object-fit: cover;
    border-bottom: 1px solid var(--glass-border);
}

.content-text {
    padding: 48px;
    line-height: 2;
    font-size: 1.1rem;
    text-align: justify;
    color: var(--text-secondary);
}

.content-text p {
    margin-bottom: 24px;
}

.content-text h2,
.content-text h3,
.content-text h4 {
    color: var(--text-primary);
    margin: 40px 0 20px;
    position: relative;
    padding-right: 20px;
}

.content-text h2::before,
.content-text h3::before {
    content: "";
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 4px;
    height: 60%;
    background: linear-gradient(
        180deg,
        var(--accent-primary),
        var(--accent-secondary)
    );
    border-radius: 2px;
}

.content-text a {
    color: var(--accent-primary);
    text-decoration: none;
    border-bottom: 1px solid transparent;
    transition: border-color 0.3s ease;
}

.content-text a:hover {
    border-bottom-color: var(--accent-primary);
}

.content-text ul,
.content-text ol {
    padding-right: 24px;
    margin: 20px 0;
}

.content-text li {
    margin-bottom: 12px;
    position: relative;
}

.content-text blockquote {
    margin: 32px 0;
    padding: 24px 32px;
    background: linear-gradient(
        135deg,
        rgba(0, 212, 170, 0.05),
        rgba(124, 58, 237, 0.05)
    );
    border-right: 4px solid var(--accent-primary);
    border-radius: var(--radius-md);
    font-style: italic;
    color: var(--text-primary);
}

.content-text img {
    max-width: 100%;
    height: auto;
    border-radius: var(--radius-md);
    margin: 24px 0;
}

.content-text code {
    background: rgba(255, 255, 255, 0.1);
    padding: 2px 8px;
    border-radius: 4px;
    font-family: monospace;
    font-size: 0.9em;
}

.content-text pre {
    background: rgba(0, 0, 0, 0.3);
    padding: 20px;
    border-radius: var(--radius-md);
    overflow-x: auto;
    border: 1px solid var(--glass-border);
}

/* ============================================
   Tags Section
   ============================================ */
.post-tags {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 12px;
    margin-top: 40px;
    padding: 24px 28px;
    background: rgba(255, 255, 255, 0.02);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
}

.tags-label {
    font-weight: 600;
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.tags-text {
    color: var(--accent-primary);
    font-size: 0.9rem;
}

/* ============================================
   Responsive
   ============================================ */
@media (max-width: 768px) {
    .back-btn {
        top: 16px;
        right: 16px;
        padding: 10px 16px;
        font-size: 0.85rem;
    }

    .post-header {
        min-height: 60vh;
        padding: 80px 16px 60px;
    }

    .meta-badges {
        gap: 8px;
    }

    .badge {
        padding: 6px 14px;
        font-size: 0.8rem;
    }

    .post-main-title {
        font-size: 1.8rem;
    }

    .post-lead {
        font-size: 1rem;
    }

    .article-body-wrapper {
        padding: 40px 16px 60px;
    }

    .content-text {
        padding: 24px;
        font-size: 1rem;
    }

    .post-tags {
        padding: 18px 20px;
        flex-direction: column;
        align-items: flex-start;
    }
}

/* ============================================
   Scrollbar
   ============================================ */
::-webkit-scrollbar {
    width: 8px;
}

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

::-webkit-scrollbar-thumb {
    background: var(--glass-border);
    border-radius: 4px;
}

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

/* Selection */
::selection {
    background: rgba(0, 212, 170, 0.3);
    color: var(--text-primary);
}