/* ==========================================
   Reset & Base Styles
   ========================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --font-serif: 'Playfair Display', serif;
    --font-sans: 'Inter', sans-serif;
    --color-text: #1a1a1a;
    --color-text-light: #555;
    --color-bg: #ffffff;
    --color-border: #e5e5e5;
    --spacing-unit: 1rem;
}

body {
    font-family: var(--font-sans);
    color: var(--color-text);
    background-color: var(--color-bg);
    line-height: 1.6;
    font-size: 16px;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* ==========================================
   Header & Navigation
   ========================================== */
.site-header {
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    padding: 1.5rem 0;
    position: sticky;
    top: 0;
    z-index: 1000;
}

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

.logo {
    font-family: var(--font-serif);
    font-size: 2rem;
    font-weight: 400;
    font-style: italic;
    color: var(--color-text);
    text-decoration: none;
    transition: opacity 0.3s ease;
}

.logo:hover {
    opacity: 0.7;
}

.main-nav {
    display: flex;
    gap: 3rem;
    align-items: center;
}

.main-nav a {
    font-family: var(--font-sans);
    font-size: 0.95rem;
    font-weight: 400;
    color: var(--color-text-light);
    text-decoration: none;
    position: relative;
    transition: color 0.3s ease;
}

.main-nav a:hover,
.main-nav a.active {
    color: var(--color-text);
}

.main-nav a.active::after {
    content: '';
    position: absolute;
    bottom: -0.5rem;
    left: 0;
    right: 0;
    height: 1px;
    background-color: var(--color-text);
}

/* ==========================================
   Main Content Area
   ========================================== */
main {
    min-height: calc(100vh - 200px);
    padding: 2rem 0;
}

/* ==========================================
   Typography
   ========================================== */
h1 {
    font-family: var(--font-serif);
    font-size: 4.5rem;
    font-weight: 400;
    line-height: 1.1;
    margin-bottom: 2rem;
}

h2 {
    font-family: var(--font-serif);
    font-size: 2rem;
    font-weight: 500;
    margin-bottom: 1.5rem;
}

h3 {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    font-weight: 500;
    margin-bottom: 1rem;
}

p {
    font-family: var(--font-sans);
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--color-text-light);
    margin-bottom: 1.5rem;
}

/* ==========================================
   Footer
   ========================================== */
.site-footer {
    background: var(--color-bg);
    border-top: 1px solid var(--color-border);
    padding: 2rem 0;
    margin-top: 4rem;
}

.site-footer p {
    text-align: center;
    font-size: 0.9rem;
    color: var(--color-text-light);
    margin: 0;
}

/* ==========================================
   Single Page (Individual documentation)
   ========================================== */
.single-page {
    padding: 4rem 0;
}

.page-hero-image {
    width: 100%;
    max-width: 1000px;
    margin: 0 auto 3rem;
    border-radius: 16px;
    overflow: hidden;
}

.page-hero-image img {
    width: 100%;
    height: auto;
    display: block;
}

.page-header {
    max-width: 800px;
    margin: 0 auto 3rem;
    text-align: center;
}

.article-title {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.article-meta {
    font-family: var(--font-sans);
    font-size: 0.95rem;
    color: var(--color-text-light);
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.5rem;
}

.separator {
    opacity: 0.5;
}

/* Article Content */
.article-content {
    max-width: 900px;
    margin: 0 auto;
    line-height: 1.7;
}

.article-content h2 {
    font-family: var(--font-serif);
    font-size: 2rem;
    font-weight: 700;
    margin-top: 3rem;
    margin-bottom: 1rem;
    color: var(--color-text);
}

.article-content h3 {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    font-weight: 600;
    margin-top: 2rem;
    margin-bottom: 0.75rem;
    color: var(--color-text);
}

.article-content h4 {
    font-family: var(--font-sans);
    font-size: 1.2rem;
    font-weight: 600;
    margin-top: 1.5rem;
    margin-bottom: 0.5rem;
    color: var(--color-text);
}

.article-content p {
    font-family: var(--font-sans);
    font-size: 1.05rem;
    margin-bottom: 1.25rem;
    line-height: 1.8;
    color: var(--color-text);
}

.article-content strong {
    font-weight: 600;
    color: var(--color-text);
}

.article-content em {
    font-style: italic;
}

.article-content hr {
    border: none;
    border-top: 1px solid #e0e0e0;
    margin: 2rem 0;
}

.article-content img {
    max-width: 500px;
    width: 100%;
    height: auto;
    border-radius: 8px;
    margin: 2rem auto;
    display: block;
}

article.single-page .article-content ul,
article.single-page .article-content ol,
.article-content ul,
.article-content ol {
    font-family: var(--font-sans) !important;
    font-size: 1.05rem !important;
    margin: 1.5rem 0 1.5rem 3rem !important;
    padding-left: 1.5rem !important;
    line-height: 1.8 !important;
    color: var(--color-text) !important;
    list-style-position: outside !important;
}

article.single-page .article-content li,
.article-content li {
    margin-bottom: 1rem !important;
    line-height: 1.8 !important;
    color: var(--color-text) !important;
    padding-left: 0.5rem !important;
    font-size: 1.05rem !important;
}

.article-content li::marker {
    font-family: var(--font-sans);
    color: var(--color-text);
    font-weight: 500;
}

.article-content ul ul,
.article-content ol ol,
.article-content ul ol,
.article-content ol ul {
    margin-top: 0.75rem;
    margin-bottom: 0.75rem;
    padding-left: 2rem;
}

.article-content blockquote {
    border-left: 4px solid var(--color-text);
    padding-left: 1.5rem;
    margin: 2rem 0;
    font-style: italic;
    color: var(--color-text-light);
}

.article-content code {
    background: #f5f5f5;
    padding: 0.2rem 0.4rem;
    border-radius: 4px;
    font-size: 0.9em;
    font-family: 'Monaco', 'Courier New', monospace;
}

.article-content pre {
    background: #f5f5f5;
    padding: 1.5rem;
    border-radius: 8px;
    overflow-x: auto;
    margin: 2rem 0;
}

.article-content pre code {
    background: none;
    padding: 0;
}

.article-content table {
    width: 100%;
    border-collapse: collapse;
    margin: 2rem 0;
}

.article-content table th,
.article-content table td {
    border: 1px solid var(--color-border);
    padding: 0.75rem;
    text-align: left;
}

.article-content table th {
    background: #f5f5f5;
    font-weight: 600;
}

/* Article Navigation */
.article-navigation {
    max-width: 800px;
    margin: 4rem auto 0;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    padding-top: 3rem;
    border-top: 1px solid var(--color-border);
}

.nav-link {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    padding: 1.5rem;
    border: 1px solid var(--color-border);
    border-radius: 8px;
    text-decoration: none;
    color: var(--color-text);
    transition: all 0.3s ease;
}

.nav-link:hover {
    border-color: var(--color-text);
    transform: translateY(-2px);
}

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

.nav-label {
    font-size: 0.9rem;
    color: var(--color-text-light);
    font-weight: 500;
}

.nav-title {
    font-family: var(--font-serif);
    font-size: 1.1rem;
    font-weight: 600;
}

/* ==========================================
   List Page (Assignments/Development/Project)
   ========================================== */
.list-page {
    padding: 1rem 0;
}

.page-title {
    font-size: 3.5rem;
    font-weight: 400;
    margin-bottom: 3rem;
}

.page-description {
    max-width: 100%;
    margin-bottom: 1rem;
}

.page-description img {
    max-width: 600px;
    width: 100%;
    height: auto;
    border-radius: 8px;
    margin: 2rem auto;
    display: block;
}

.page-description pre {
    background: #f5f5f5;
    padding: 1.5rem;
    border-radius: 8px;
    overflow-x: auto;
    margin: 2rem 0;
    white-space: pre-wrap;
    word-wrap: break-word;
    word-break: break-all;
}

.page-description pre code {
    background: none;
    padding: 0;
    white-space: pre-wrap;
    word-wrap: break-word;
    word-break: break-all;
}

/* Cards Grid */
.cards-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 3rem;
    margin-top: 4rem;
}

.project-card {
    text-decoration: none;
    color: var(--color-text);
    transition: transform 0.3s ease;
}

.project-card:hover {
    transform: translateY(-8px);
}

.card-image {
    width: 100%;
    aspect-ratio: 1;
    border-radius: 24px;
    overflow: hidden;
    margin-bottom: 1.5rem;
    background: #f5f5f5;
}

.card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.card-image-placeholder {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #f0f0f0 0%, #e0e0e0 100%);
    display: flex;
    align-items: center;
    justify-content: center;
}

.card-title {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    font-weight: 700;
    text-align: center;
    margin: 0;
}

/* ==========================================
   Homepage Styles
   ========================================== */
.home-page {
    padding: 0;
}

/* Hero Section */
.hero-section {
    padding: 6rem 0;
    background: var(--color-bg);
}

.hero-content {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 4rem;
    align-items: center;
}

.hero-title {
    font-size: 5rem;
    font-weight: 400;
    line-height: 1.1;
    margin-bottom: 2rem;
}

.hero-description {
    font-size: 1.1rem;
    line-height: 1.8;
    max-width: 600px;
}

.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.profile-image {
    width: 100%;
    max-width: 400px;
    border-radius: 50%;
    object-fit: cover;
    aspect-ratio: 1;
}

.profile-placeholder {
    width: 300px;
    height: 300px;
    border-radius: 50%;
    background: linear-gradient(135deg, #f5f5f5 0%, #e0e0e0 100%);
}

/* About Section */
.about-section {
    padding: 4rem 0;
    background: #fafafa;
}

.section-title {
    font-family: var(--font-serif);
    font-size: 2rem;
    font-style: italic;
    font-weight: 400;
    margin-bottom: 2rem;
    text-align: center;
}

.about-content {
    max-width: 800px;
    margin: 0 auto;
}

.about-content h2,
.about-content h3 {
    font-family: var(--font-serif);
    font-size: 2rem;
    font-style: italic;
    font-weight: 400;
    margin-bottom: 2rem;
    text-align: center;
}

.about-content p {
    text-align: center;
}

/* Sections Preview */
.sections-preview {
    padding: 4rem 0;
}

.preview-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-top: 3rem;
}

.preview-card {
    padding: 2.5rem 2rem;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    text-decoration: none;
    color: var(--color-text);
    transition: all 0.3s ease;
    text-align: center;
}

.preview-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.preview-card h3 {
    font-family: var(--font-serif);
    font-size: 1.8rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--color-text);
}

.preview-card p {
    font-family: var(--font-sans);
    font-size: 0.95rem;
    color: var(--color-text-light);
    margin: 0;
}

/* ==========================================
   Responsive Design
   ========================================== */

/* Tablet */
@media (max-width: 1024px) {
    .cards-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .preview-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Mobile */
@media (max-width: 768px) {
    .container {
        padding: 0 1.5rem;
    }
    
    .header-content {
        flex-direction: column;
        gap: 1.5rem;
    }
    
    .main-nav {
        gap: 1.5rem;
    }
    
    .main-nav a {
        font-size: 0.9rem;
    }
    
    h1 {
        font-size: 3rem;
    }
    
    h2 {
        font-size: 2rem;
    }
    
    main {
        padding: 2rem 0;
    }
    
    /* Homepage responsive */
    .hero-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .hero-title {
        font-size: 3.5rem;
    }
    
    .hero-image {
        order: -1;
    }
    
    .preview-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    /* List page responsive */
    .cards-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .page-title {
        font-size: 3rem;
    }
    
    /* Single page responsive */
    .article-title {
        font-size: 2.5rem;
    }
    
    .article-navigation {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .nav-link.next {
        text-align: left;
    }
}

@media (max-width: 480px) {
    .logo {
        font-size: 1.5rem;
    }
    
    .main-nav {
        gap: 1rem;
        flex-wrap: wrap;
        justify-content: center;
    }
    
    h1 {
        font-size: 2.5rem;
    }
}

/* ==========================================
   Force List Styles - Must be last
   ========================================== */
.single-page .article-content ul,
.single-page .article-content ol,
.list-page .page-description ul,
.list-page .page-description ol,
.article-content ul,
.article-content ol,
.page-description ul,
.page-description ol {
    padding-left: 1.5rem !important;
    font-size: 1.05rem !important;
    list-style-position: outside !important;
}

.single-page .article-content ul,
.list-page .page-description ul,
.article-content ul,
.page-description ul {
    list-style-type: disc !important;
}

.single-page .article-content ol,
.list-page .page-description ol,
.article-content ol,
.page-description ol {
    list-style-type: decimal !important;
}

.single-page .article-content li,
.list-page .page-description li,
.article-content li,
.page-description li {
    font-size: 1.05rem !important;
    margin-bottom: 1rem !important;
    padding-left: 0.5rem !important;
}