/* ============================================
   Blog IM — Minimal Professional White Design
   ============================================ */

*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

:root {
    --white: #ffffff;
    --bg-light: #f8f9fa;
    --text-dark: #212529;
    --text-muted: #6c757d;
    --accent: #2563eb;
    --accent-hover: #1d4ed8;
    --border: #e9ecef;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.10);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.12);
    --radius: 12px;
    --radius-sm: 8px;
    --transition: 0.2s ease;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-dark);
    background: var(--bg-light);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

a {
    color: var(--accent);
    text-decoration: none;
    transition: color var(--transition);
}

a:hover {
    color: var(--accent-hover);
}

img {
    max-width: 100%;
    height: auto;
}

/* ============ LAYOUT ============ */
.container {
    max-width: 1140px;
    margin: 0 auto;
    padding: 0 24px;
}

.main-content {
    flex: 1;
    padding: 48px 0 64px;
}

/* ============ NAVBAR ============ */
.navbar {
    position: sticky;
    top: 0;
    z-index: 100;
    background: var(--white);
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow-sm);
}

.navbar-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
    gap: 24px;
}

.brand {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-dark);
    letter-spacing: -0.5px;
    flex-shrink: 0;
}

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

.nav-links {
    list-style: none;
    display: flex;
    align-items: center;
    gap: 4px;
}

.nav-links a {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    color: var(--text-muted);
    font-weight: 500;
    font-size: 0.9375rem;
    transition: color var(--transition), background var(--transition);
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--accent);
    background: rgba(37, 99, 235, 0.07);
}

.nav-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    font-size: 1.5rem;
    color: var(--text-dark);
    padding: 4px;
}

/* ============ SECTION ============ */
.page-section {
    max-width: 900px;
    margin: 0 auto;
}

.section-header {
    text-align: center;
    margin-bottom: 40px;
}

.section-title {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-dark);
    letter-spacing: -0.5px;
    margin-bottom: 8px;
}

.section-subtitle {
    font-size: 1rem;
    color: var(--text-muted);
}

/* ============ SEARCH ============ */
.search-form {
    margin-bottom: 40px;
}

.search-wrapper {
    position: relative;
    display: flex;
    align-items: center;
    background: var(--white);
    border: 1.5px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    transition: border-color var(--transition), box-shadow var(--transition);
}

.search-wrapper:focus-within {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.12);
}

.search-icon {
    position: absolute;
    left: 18px;
    font-size: 1.125rem;
    color: var(--text-muted);
    pointer-events: none;
}

.search-input {
    flex: 1;
    border: none;
    outline: none;
    padding: 14px 16px 14px 50px;
    font-size: 1rem;
    font-family: inherit;
    color: var(--text-dark);
    background: transparent;
}

.search-input::placeholder {
    color: #adb5bd;
}

.search-clear {
    padding: 8px 12px;
    color: var(--text-muted);
    font-size: 1.125rem;
    display: flex;
    align-items: center;
    transition: color var(--transition);
}

.search-clear:hover {
    color: var(--text-dark);
}

.search-btn {
    padding: 14px 24px;
    background: var(--accent);
    color: var(--white);
    border: none;
    font-size: 0.9375rem;
    font-weight: 500;
    font-family: inherit;
    cursor: pointer;
    transition: background var(--transition);
    white-space: nowrap;
}

.search-btn:hover {
    background: var(--accent-hover);
}

.search-result-info {
    margin-top: 12px;
    font-size: 0.875rem;
    color: var(--text-muted);
}

/* ============ POSTS GRID ============ */
.posts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 24px;
    margin-bottom: 48px;
}

/* ============ POST CARD ============ */
.post-card {
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
    display: flex;
    flex-direction: column;
    transition: transform var(--transition), box-shadow var(--transition);
    overflow: hidden;
}

.post-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.post-card-body {
    padding: 24px;
    flex: 1;
}

.post-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 12px;
    font-size: 0.8125rem;
    color: var(--text-muted);
}

.post-meta span {
    display: flex;
    align-items: center;
    gap: 4px;
}

.post-title {
    font-size: 1.125rem;
    font-weight: 600;
    line-height: 1.4;
    margin-bottom: 10px;
    color: var(--text-dark);
}

.post-title a {
    color: inherit;
}

.post-title a:hover {
    color: var(--accent);
}

.post-excerpt {
    font-size: 0.9375rem;
    color: var(--text-muted);
    line-height: 1.6;
}

.post-card-footer {
    padding: 16px 24px;
    border-top: 1px solid var(--border);
    background: var(--bg-light);
}

.read-more-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--accent);
    transition: gap var(--transition);
}

.read-more-btn:hover {
    gap: 10px;
    color: var(--accent-hover);
}

/* ============ PAGINATION ============ */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 6px;
    flex-wrap: wrap;
}

.page-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 40px;
    height: 40px;
    padding: 0 12px;
    border-radius: var(--radius-sm);
    background: var(--white);
    border: 1.5px solid var(--border);
    color: var(--text-dark);
    font-size: 0.9375rem;
    font-weight: 500;
    transition: all var(--transition);
}

.page-btn:hover:not(.disabled):not(.active) {
    border-color: var(--accent);
    color: var(--accent);
    background: rgba(37, 99, 235, 0.05);
}

.page-btn.active {
    background: var(--accent);
    border-color: var(--accent);
    color: var(--white);
}

.page-btn.disabled {
    opacity: 0.4;
    cursor: not-allowed;
    pointer-events: none;
}

/* ============ EMPTY STATE ============ */
.empty-state {
    text-align: center;
    padding: 80px 24px;
    color: var(--text-muted);
}

.empty-state i {
    font-size: 3rem;
    margin-bottom: 16px;
    display: block;
    opacity: 0.5;
}

.empty-state p {
    font-size: 1.0625rem;
    margin-bottom: 20px;
}

.btn-outline {
    display: inline-flex;
    align-items: center;
    padding: 10px 20px;
    border: 1.5px solid var(--accent);
    border-radius: var(--radius-sm);
    color: var(--accent);
    font-weight: 500;
    transition: all var(--transition);
}

.btn-outline:hover {
    background: var(--accent);
    color: var(--white);
}

/* ============ POST DETAIL ============ */
.post-detail {
    background: var(--white);
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
    padding: 40px 48px;
    border: 1px solid var(--border);
}

.back-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--text-muted);
    margin-bottom: 32px;
    transition: color var(--transition), gap var(--transition);
}

.back-btn:hover {
    color: var(--accent);
    gap: 10px;
}

.post-detail-header {
    border-bottom: 1px solid var(--border);
    padding-bottom: 28px;
    margin-bottom: 32px;
}

.post-detail-title {
    font-size: 2rem;
    font-weight: 700;
    line-height: 1.3;
    color: var(--text-dark);
    letter-spacing: -0.5px;
    margin-bottom: 16px;
}

.post-detail-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    font-size: 0.875rem;
    color: var(--text-muted);
}

.post-detail-meta span {
    display: flex;
    align-items: center;
    gap: 5px;
}

.post-detail-content {
    font-size: 1.0625rem;
    line-height: 1.8;
    color: var(--text-dark);
}

/* CKEditor content styling */
.ck-content h1, .ck-content h2, .ck-content h3,
.ck-content h4, .ck-content h5, .ck-content h6 {
    margin: 1.5em 0 0.75em;
    font-weight: 600;
    line-height: 1.3;
    color: var(--text-dark);
}

.ck-content p {
    margin-bottom: 1.2em;
}

.ck-content ul, .ck-content ol {
    padding-left: 2em;
    margin-bottom: 1.2em;
}

.ck-content li {
    margin-bottom: 0.4em;
}

.ck-content blockquote {
    border-left: 4px solid var(--accent);
    margin: 1.5em 0;
    padding: 0.75em 1.25em;
    background: rgba(37, 99, 235, 0.04);
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    color: var(--text-muted);
    font-style: italic;
}

.ck-content pre {
    background: #1e1e2e;
    color: #cdd6f4;
    padding: 1.25em 1.5em;
    border-radius: var(--radius-sm);
    overflow-x: auto;
    font-size: 0.9em;
    line-height: 1.6;
    margin-bottom: 1.2em;
}

.ck-content code {
    background: rgba(37, 99, 235, 0.08);
    color: var(--accent);
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 0.9em;
}

.ck-content pre code {
    background: none;
    color: inherit;
    padding: 0;
}

.ck-content img {
    max-width: 100%;
    height: auto;
    border-radius: var(--radius-sm);
    margin: 1em 0;
}

.ck-content a {
    color: var(--accent);
    text-decoration: underline;
    text-underline-offset: 3px;
}

/* ============ ABOUT ============ */
.about-card {
    display: flex;
    gap: 40px;
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
    padding: 40px 48px;
    align-items: flex-start;
}

.about-avatar {
    flex-shrink: 0;
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.1), rgba(37, 99, 235, 0.2));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: var(--accent);
}

.about-content {
    flex: 1;
}

.about-text {
    font-size: 1.0625rem;
    line-height: 1.8;
    color: var(--text-dark);
    margin-bottom: 1.2em;
}

/* ============ CONNECTION ============ */
.connection-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
}

.connection-card {
    display: flex;
    align-items: center;
    gap: 20px;
    background: var(--white);
    border: 1.5px solid var(--border);
    border-radius: var(--radius);
    padding: 24px;
    box-shadow: var(--shadow-sm);
    color: var(--text-dark);
    transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
    cursor: pointer;
}

.connection-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
    border-color: transparent;
    color: var(--text-dark);
}

.connection-icon {
    width: 52px;
    height: 52px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    flex-shrink: 0;
}

.connection-icon.github {
    background: rgba(36, 41, 47, 0.08);
    color: #24292f;
}

.connection-icon.telegram {
    background: rgba(0, 136, 204, 0.1);
    color: #0088cc;
}

.connection-icon.phone {
    background: rgba(37, 211, 102, 0.1);
    color: #25d366;
}

.connection-icon.email {
    background: rgba(234, 67, 53, 0.1);
    color: #ea4335;
}

.connection-info {
    flex: 1;
    min-width: 0;
}

.connection-label {
    display: block;
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 4px;
}

.connection-value {
    display: block;
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--text-dark);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.connection-arrow {
    font-size: 1.125rem;
    color: var(--text-muted);
    flex-shrink: 0;
    transition: transform var(--transition);
}

.connection-card:hover .connection-arrow {
    transform: translateX(4px);
    color: var(--accent);
}

/* ============ FOOTER ============ */
.footer {
    background: var(--white);
    border-top: 1px solid var(--border);
    padding: 24px 0;
}

.footer-inner {
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.875rem;
    color: var(--text-muted);
}

/* ============ RESPONSIVE ============ */
@media (max-width: 768px) {
    .nav-toggle {
        display: block;
    }

    .nav-links {
        display: none;
        position: absolute;
        top: 64px;
        left: 0;
        right: 0;
        background: var(--white);
        border-bottom: 1px solid var(--border);
        flex-direction: column;
        padding: 12px 16px;
        gap: 4px;
        box-shadow: var(--shadow-md);
    }

    .nav-links.open {
        display: flex;
    }

    .nav-links a {
        padding: 10px 16px;
        width: 100%;
    }

    .main-content {
        padding: 32px 0 48px;
    }

    .posts-grid {
        grid-template-columns: 1fr;
    }

    .post-detail {
        padding: 28px 24px;
    }

    .post-detail-title {
        font-size: 1.5rem;
    }

    .about-card {
        flex-direction: column;
        align-items: center;
        text-align: center;
        padding: 32px 24px;
        gap: 24px;
    }

    .connection-grid {
        grid-template-columns: 1fr;
    }

    .section-title {
        font-size: 1.625rem;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }

    .search-btn {
        padding: 14px 16px;
        font-size: 0.875rem;
    }

    .post-detail {
        padding: 24px 18px;
    }

    .page-btn {
        min-width: 36px;
        height: 36px;
        font-size: 0.875rem;
    }
}