:root {
    --font-family: 'Inter', sans-serif;
    --primary-color: #7F56D9;
    --text-primary: #101828;
    --text-secondary: #475467;
    --text-tertiary: #667085;
    --border-color: #EAECF0;
    --bg-white: #ffffff;
    --bg-gray: #F9FAFB;
}

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

body {
    font-family: var(--font-family);
    color: var(--text-primary);
    background-color: var(--bg-white);
    line-height: 1.5;
}

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 32px;
}

/* Header */
.site-header {
    border-bottom: 1px solid var(--border-color);
    padding: 20px 0;
    margin-bottom: 24px;
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 16px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 700;
    font-size: 1.2rem;
    text-decoration: none;
    color: var(--text-primary);
}

.logo-icon {
    width: 24px;
    height: 24px;
    background: linear-gradient(135deg, #7F56D9 0%, #A855F7 100%);
    border-radius: 6px;
}

.logo-sub {
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
    border-left: 1px solid var(--border-color);
    padding-left: 16px;
}

.header-right {
    display: flex;
    align-items: center;
}

/* Search in Header */
.search-box {
    position: relative;
    width: 300px;
}

.search-icon {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-tertiary);
    width: 20px;
}

.search-box input {
    width: 100%;
    padding: 10px 14px 10px 42px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 0.9rem;
    outline: none;
    box-shadow: 0 1px 2px rgba(16, 24, 40, 0.05);
}

.search-box input:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(127, 86, 217, 0.1);
}

/* Categories */
.blog-categories-section {
    padding-bottom: 32px;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 48px;
}

.categories {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    /* No scroll, wrap instead */
}

.cat-btn {
    background: none;
    border: none;
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 8px 12px;
    border-radius: 6px;
    transition: all 0.2s;
}

.cat-btn:hover {
    background-color: var(--bg-gray);
    color: var(--text-primary);
}

.cat-btn.active {
    background-color: var(--bg-gray);
    color: var(--primary-color);
}

/* Grid */
.blog-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
    margin-bottom: 64px;
}

.blog-card {
    display: flex;
    flex-direction: column;
    gap: 24px;
    cursor: pointer;
    transition: transform 0.2s;
}

.blog-card:hover {
    transform: translateY(-4px);
}

.card-image {
    width: 100%;
    aspect-ratio: 16/10;
    object-fit: cover;
    border-radius: 12px;
}

.card-meta {
    color: var(--primary-color);
    font-weight: 600;
    font-size: 0.875rem;
}

.card-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    line-height: 1.3;
    display: flex;
    justify-content: space-between;
}

.arrow-icon {
    opacity: 0;
    transform: translate(-10px, 10px);
    transition: all 0.2s;
}

.blog-card:hover .arrow-icon {
    opacity: 1;
    transform: translate(0, 0);
}

.card-summary {
    color: var(--text-secondary);
    font-size: 1rem;
    line-height: 1.6;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.card-footer {
    margin-top: auto;
    display: flex;
    align-items: center;
    gap: 12px;
}

.user-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: #F2F4F7;
    display: flex;
    justify-content: center;
    align-items: center;
    font-weight: 600;
    color: var(--text-secondary);
}

.user-info {
    display: flex;
    flex-direction: column;
    font-size: 0.875rem;
}

.author-name {
    font-weight: 600;
}

.post-date {
    color: var(--text-secondary);
}

/* Pagination */
.pagination-container {
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 80px;
}

.pagination-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 14px;
    border-radius: 8px;
    background: none;
    border: 1px solid transparent;
    font-weight: 600;
    color: var(--text-secondary);
    cursor: pointer;
}

.pagination-btn:hover:not(:disabled) {
    background-color: var(--bg-gray);
    color: var(--text-primary);
}

.pagination-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.page-numbers {
    display: flex;
    gap: 2px;
}

.page-num {
    width: 40px;
    height: 40px;
    display: flex;
    justify-content: center;
    align-items: center;
    border-radius: 8px;
    cursor: pointer;
    color: var(--text-secondary);
}

.page-num.active {
    background-color: var(--bg-gray);
    color: var(--text-primary);
    font-weight: 600;
}

.page-num:hover:not(.active) {
    background-color: var(--bg-gray);
}

/* Footer */
.site-footer {
    margin-top: auto;
    padding: 48px 0;
    background-color: var(--bg-white);
    border-top: 1px solid var(--border-color);
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.footer-links {
    display: flex;
    gap: 24px;
}

.footer-link-btn {
    background: none;
    border: none;
    font-size: 0.9rem;
    color: var(--text-secondary);
    cursor: pointer;
    font-family: inherit;
}

.footer-link-btn:hover {
    color: var(--text-primary);
    text-decoration: underline;
}

/* Modals */
.modal-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6);
    z-index: 1000;
    justify-content: center;
    align-items: center;
    backdrop-filter: blur(4px);
}

.modal-overlay.active {
    display: flex;
}

.modal-content {
    background: white;
    border-radius: 16px;
    position: relative;
    max-height: 90vh;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    box-shadow: 0 20px 24px -4px rgba(16, 24, 40, 0.08);
}

.close-modal-btn {
    position: absolute;
    top: 16px;
    right: 16px;
    background: white;
    border: 1px solid var(--border-color);
    width: 32px;
    height: 32px;
    border-radius: 50%;
    cursor: pointer;
    font-size: 1.2rem;
    display: flex;
    justify-content: center;
    align-items: center;
    color: var(--text-secondary);
    transition: all 0.2s;
    z-index: 10;
}

.close-modal-btn:hover {
    background: var(--bg-gray);
    color: var(--text-primary);
}

.text-modal {
    width: 600px;
    padding: 32px;
}

.text-modal h2 {
    margin-bottom: 24px;
    font-size: 1.5rem;
}

.modal-body-scroll {
    overflow-y: auto;
    color: var(--text-secondary);
    line-height: 1.6;
}

.post-modal {
    width: 800px;
    max-width: 95vw;
}

.post-modal-inner {
    overflow-y: auto;
    padding: 48px;
}

.post-hero {
    text-align: center;
    margin-bottom: 32px;
}

.post-detail-cat {
    color: var(--primary-color);
    font-weight: 600;
    margin-bottom: 12px;
    display: block;
}

.post-hero h1 {
    font-size: 2.5rem;
    line-height: 1.2;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.post-detail-meta {
    color: var(--text-secondary);
    font-size: 1rem;
}

.post-detail-img {
    width: 100%;
    height: 400px;
    object-fit: cover;
    border-radius: 12px;
    margin-bottom: 32px;
}

.post-detail-body {
    font-size: 1.125rem;
    line-height: 1.8;
    color: var(--text-secondary);
}

.post-detail-body h2 {
    color: var(--text-primary);
    margin: 32px 0 16px 0;
    font-size: 1.75rem;
}

.post-detail-body p {
    margin-bottom: 20px;
}

.post-detail-body ul {
    list-style: disc;
    margin-left: 24px;
    margin-bottom: 20px;
}

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

    .header-container {
        flex-direction: column;
        align-items: flex-start;
        gap: 16px;
    }

    .footer-bottom {
        flex-direction: column;
        gap: 16px;
        align-items: flex-start;
    }

    .post-modal-inner {
        padding: 24px;
    }

    .post-hero h1 {
        font-size: 1.75rem;
    }

    .search-box {
        width: 100%;
    }
}