:root {
    --bg-main: #0f172a;
    --bg-sidebar: rgba(30, 41, 59, 0.7);
    --bg-card: rgba(30, 41, 59, 0.5);
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --accent-color: #3b82f6;
    --accent-hover: #2563eb;
    --border-color: rgba(255, 255, 255, 0.1);
    --glass-blur: 12px;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', sans-serif;
}

body {
    background-color: var(--bg-main);
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    background-image:
        radial-gradient(at 0% 0%, hsla(253, 16%, 7%, 1) 0, transparent 50%),
        radial-gradient(at 50% 0%, hsla(225, 39%, 30%, 0.2) 0, transparent 50%),
        radial-gradient(at 100% 0%, hsla(339, 49%, 30%, 0.2) 0, transparent 50%);
}

.app-container {
    display: flex;
    width: 100%;
    height: 100vh;
    overflow: hidden;
}

/* Sidebar Styling */
.sidebar {
    width: 280px;
    background: var(--bg-sidebar);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    padding: 24px 20px;
    transition: all 0.3s ease;
}

.sidebar-header .logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 24px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 32px;
}

.logo-img {
    width: 36px;
    height: 36px;
    border-radius: 8px;
    object-fit: cover;
}

/* Search Bar */
.search-container {
    position: relative;
    margin-bottom: 32px;
}

.main-search {
    max-width: 600px;
}

.search-container i {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-secondary);
    font-size: 20px;
}

.search-container input {
    width: 100%;
    background: rgba(15, 23, 42, 0.6);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 12px 12px 12px 42px;
    color: var(--text-primary);
    font-size: 14px;
    outline: none;
    transition: all 0.3s ease;
}

.search-container input::placeholder {
    color: var(--text-secondary);
}

.search-container input:focus {
    border-color: var(--accent-color);
    box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.2);
}

/* Navigation */
.nav-menu {
    flex: 1;
}

.nav-list {
    list-style: none;
}

.nav-item {
    margin-bottom: 8px;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    border-radius: 10px;
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
}

.nav-link i {
    font-size: 22px;
}

.nav-link:hover {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-primary);
}

.nav-item.active .nav-link {
    background: var(--accent-color);
    color: white;
}

.sidebar-footer {
    margin-top: auto;
    padding-top: 24px;
    border-top: 1px solid var(--border-color);
    text-align: center;
}

.social-links {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-bottom: 12px;
}

.social-links a {
    color: var(--text-secondary);
    font-size: 20px;
    transition: all 0.3s ease;
}

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

.sidebar-footer p {
    font-size: 11px;
    color: var(--text-secondary);
    opacity: 0.6;
}

.sidebar-contact {
    font-size: 12px;
    color: var(--text-secondary);
    opacity: 0.85 !important;
    margin-bottom: 6px;
}

 .sidebar.hide-mobile {
    transform: translateY(-100%);
    }

/* Main Content */
.main-content {
    flex: 1;
    overflow-y: auto;
    padding: 40px 60px;
}

.top-header {
    margin-bottom: 40px;
}

.top-header h1 {
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 8px;
    background: linear-gradient(90deg, #fff, #94a3b8);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.top-header p {
    color: var(--text-secondary);
    font-size: 16px;
}

/* Blogs Grid */
.blogs-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 24px;
}

.blog-card {
    background: var(--bg-card);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 24px;
    transition: all 0.3s ease;
    cursor: pointer;
    display: flex;
    flex-direction: column;
}

.blog-card:hover {
    transform: translateY(-5px);
    border-color: rgba(255, 255, 255, 0.2);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    background: rgba(30, 41, 59, 0.8);
}

.blog-date {
    font-size: 13px;
    color: var(--accent-color);
    margin-bottom: 12px;
    font-weight: 600;
}

.blog-title {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 12px;
    line-height: 1.4;
    color: var(--text-primary);
}

.blog-excerpt {
    color: var(--text-secondary);
    font-size: 14px;
    line-height: 1.6;
    margin-bottom: 20px;
    flex: 1;
}

.blog-tags {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.tag {
    background: rgba(59, 130, 246, 0.1);
    color: var(--accent-color);
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 500;
    border: 1px solid rgba(59, 130, 246, 0.2);
}

/* Empty state */
.no-results {
    grid-column: 1 / -1;
    text-align: center;
    padding: 60px 20px;
    background: var(--bg-card);
    border: 1px dashed var(--border-color);
    border-radius: 16px;
    color: var(--text-secondary);
}

/* Scrollbar customization for modern look */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: rgba(15, 23, 42, 0.5);
}

::-webkit-scrollbar-thumb {
    background: rgba(148, 163, 184, 0.3);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: rgba(148, 163, 184, 0.5);
}

/* Responsive */
@media (max-width: 768px) {
    .app-container {
        flex-direction: column;
        overflow-y: auto;
    }

    .sidebar {
        width: 100%;
        height: auto;
        padding: 20px;
        border-right: none;
        border-bottom: 1px solid var(--border-color);
        position: sticky;
        top: 0;
        z-index: 10;
    }

    .main-content {
        padding: 20px;
        overflow-y: visible;
    }

    .sidebar-footer {
        display: block;
        margin-top: 16px;
        padding-top: 16px;
        border-top: 1px solid var(--border-color);
    }
    
    .social-links {
        margin-bottom: 8px;
    }
}

/* Article Styles (For Blog Posts) */
.back-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 15px;
    font-weight: 500;
    margin-bottom: 30px;
    transition: color 0.3s ease;
}

.back-btn:hover {
    color: var(--accent-color);
}

.blog-article {
    max-width: 1000px;
    margin: 0 auto;
    padding-bottom: 60px;
}

.article-header {
    margin-bottom: 40px;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--border-color);
}

.article-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
    flex-wrap: wrap;
    gap: 16px;
}

.article-date {
    color: var(--text-secondary);
    font-size: 14px;
    display: flex;
    align-items: center;
    gap: 6px;
}

.article-tags {
    display: flex;
    gap: 8px;
}

.article-title {
    font-size: 40px;
    font-weight: 700;
    line-height: 1.2;
    color: var(--text-primary);
}

.article-body {
    font-size: 16px;
    line-height: 1.8;
    color: var(--text-secondary);
}

.article-body p {
    margin-bottom: 24px;
    text-indent: 32px;
}

.article-body p * {
    text-indent: 0;
}

.article-body h2 {
    font-size: 28px;
    color: var(--text-primary);
    margin: 40px 0 16px 30px;
    /* increased left margin */
    font-weight: 600;
}

.article-body h3 {
    font-size: 22px;
    color: var(--text-primary);
    margin: 32px 0 16px 45px;
    /* increased left margin */
    font-weight: 600;
}

.article-image {
    width: 100%;
    border-radius: 12px;
    margin: 32px 0;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
}

.article-body blockquote {
    border-left: 4px solid var(--accent-color);
    padding: 16px 24px;
    margin: 32px 0;
    background: rgba(59, 130, 246, 0.05);
    border-radius: 0 12px 12px 0;
    font-style: italic;
    color: var(--text-primary);
}

.article-body code {
    background: rgba(255, 255, 255, 0.1);
    padding: 2px 6px;
    border-radius: 4px;
    font-family: monospace;
    color: var(--accent-color);
}

.article-footer {
    margin-top: 60px;
    text-align: center;
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 500;
    letter-spacing: 0.5px;
}

.footer-divider {
    border: none;
    height: 1px;
    background: var(--border-color);
    width: 60px;
    margin: 0 auto 24px auto;
}

.footer-authors {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
}

.author-left {
    flex: 1;
    text-align: right;
}

.author-separator {
    flex: 0 0 auto;
    color: var(--text-secondary);
}

.author-right {
    flex: 1;
    text-align: left;
}

/* Step Box – Adım Kutuları */
.step-box {
    display: flex;
    align-items: flex-start;
    gap: 20px;
    background: rgba(59, 130, 246, 0.06);
    border: 1px solid rgba(59, 130, 246, 0.15);
    border-radius: 12px;
    padding: 20px 24px;
    margin: 20px 0;
    transition: all 0.3s ease;
}

.step-box:hover {
    border-color: rgba(59, 130, 246, 0.35);
    background: rgba(59, 130, 246, 0.1);
}

.step-number {
    flex-shrink: 0;
    width: 40px;
    height: 40px;
    background: var(--accent-color);
    color: #fff;
    font-size: 18px;
    font-weight: 700;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.step-content {
    flex: 1;
    color: var(--text-secondary);
    font-size: 15px;
    line-height: 1.7;
}

.step-content strong {
    color: var(--text-primary);
    display: block;
    margin-bottom: 4px;
    font-size: 16px;
}

/* Title with Info Box (H1 Yanında Bilgi Kutusu) */
.title-with-info {
    display: flex;
    align-items: stretch;
    justify-content: space-between;
    gap: 24px;
}

.title-with-info .article-title {
    flex-shrink: 0;
    margin: 0;
    align-self: center; /* Başlığı ortala */
}

.title-info-box {
    flex: 1;
    display: flex;
    align-items: flex-start;
    gap: 12px;
    background: rgba(59, 130, 246, 0.08); /* Accent renginde hafif arkaplan */
    border: 1px solid rgba(59, 130, 246, 0.25);
    border-radius: 12px;
    padding: 12px 16px;
}

.title-info-box i {
    font-size: 22px;
    color: var(--accent-color);
    margin-top: 1px;
    flex-shrink: 0;
}

.title-info-box .info-content {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.5;
}
@media (max-width: 768px) {
    .title-with-info {
        flex-direction: column; /* Elemanları yan yana değil, alt alta diz */
        gap: 16px; /* Mobilde aradaki boşluğu biraz azaltmak daha iyi durur */
    }

    .title-with-info .article-title {
        align-self: flex-start; /* Mobilde başlığı ortalamak yerine sola yasla */
    }
    
    .title-info-box {
        width: 100%; /* Bilgi kutusunun ekran genişliğini tam kaplamasını sağla */
        box-sizing: border-box; /* Padding değerlerinin genişliği bozmasını engelle */
    }
}