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

:root {
    --primary-color: #6366F1;
    --primary-dark: #4F46E5;
    --secondary-color: #EC4899;
    --accent-yellow: #F59E0B;
    --accent-cyan: #06B6D4;
    --text-primary: #1F2937;
    --text-secondary: #4B5563;
    --text-tertiary: #6B7280;
    --text-inverse: #FFFFFF;
    --bg-primary: #FFFFFF;
    --bg-secondary: #F9FAFB;
    --border-color: #1F2937;
    --border-width: 3px;
    --shadow-offset: 6px;
}

body {
    font-family: 'Inter', 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-secondary);
    font-size: 16px;
    font-weight: 500;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Navbar */
.navbar {
    background: var(--primary-color);
    border-bottom: var(--border-width) solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow-offset) var(--shadow-offset) 0 var(--border-color);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
}

.nav-brand {
    font-size: 24px;
    font-weight: 800;
    color: var(--text-primary);
    text-decoration: none;
    letter-spacing: -0.5px;
    transition: transform 0.2s ease;
}

.nav-brand:hover {
    transform: translateY(-2px);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 8px;
    flex-grow: 1;
    justify-content: flex-start;
    margin-left: 20px;
    flex-wrap: wrap;
}

.nav-link {
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 600;
    font-size: 14px;
    padding: 10px 14px;
    border: var(--border-width) solid var(--border-color);
    background: var(--bg-primary);
    transition: all 0.2s ease;
    box-shadow: 3px 3px 0 var(--border-color);
    white-space: nowrap;
}

.nav-link:hover {
    transform: translate(2px, 2px);
    box-shadow: 2px 2px 0 var(--border-color);
}

.nav-link.active {
    background: var(--secondary-color);
    color: var(--text-primary);
}

.nav-menu li:has(.sign-in-btn) {
    margin-left: auto;
}

.nav-link.sign-in-btn {
    background: transparent;
    color: white;
    font-weight: 700;
    font-size: 18px;
    border: none;
    box-shadow: none;
}

.nav-link.sign-in-btn:hover {
    background: transparent;
    transform: none;
    box-shadow: none;
    opacity: 0.8;
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, #EEF2FF 0%, #E0E7FF 100%);
    padding: 60px 0;
    border-bottom: var(--border-width) solid var(--border-color);
}

.hero h1 {
    font-size: 48px;
    margin-bottom: 16px;
    color: var(--text-primary);
    font-weight: 800;
    line-height: 1.2;
    letter-spacing: -1px;
}

.hero p {
    font-size: 18px;
    color: var(--text-primary);
    font-weight: 500;
}

/* News Feed */
.news-feed {
    padding: 40px 0;
    background: var(--bg-secondary);
}

.news-layout {
    display: grid;
    grid-template-columns: 1fr 320px;
    gap: 32px;
}

.news-main {
    min-width: 0;
}

.feed-column {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.news-card {
    background: var(--bg-primary);
    border: var(--border-width) solid var(--border-color);
    border-bottom: calc(var(--border-width) + 1px) solid var(--border-color); /* More prominent bottom border */
    padding: 24px;
    transition: all 0.2s ease;
    box-shadow: var(--shadow-offset) var(--shadow-offset) 0 var(--border-color);
}

.news-card:hover {
    transform: translate(3px, 3px);
    box-shadow: 3px 3px 0 var(--border-color);
    border-color: var(--primary-color);
}

.news-card h3 {
    color: var(--text-primary);
    margin-bottom: 12px;
    font-size: 20px;
    font-weight: 700;
    line-height: 1.4;
}

.news-card h3 a {
    color: var(--text-primary);
    text-decoration: none;
}

.news-card h3 a:hover {
    color: var(--primary-color);
}

.news-card .date {
    color: #6B7280;
    font-size: 13px;
    margin-bottom: 12px;
    font-weight: 600;
}

.news-card .description {
    color: #4B5563;
    line-height: 1.6;
    font-size: 15px;
    font-weight: 400;
}

.loading {
    text-align: center;
    padding: 60px 24px;
    color: var(--text-primary);
    font-size: 16px;
    font-weight: 600;
}

.error {
    background: #FEE2E2;
    border: var(--border-width) solid #DC2626;
    color: #991B1B;
    padding: 16px 24px;
    text-align: center;
    font-size: 15px;
    font-weight: 600;
    box-shadow: 4px 4px 0 #DC2626;
}

/* Quick Links Sidebar */
.quick-links {
    background: var(--bg-primary);
    border: var(--border-width) solid var(--border-color);
    border-bottom: calc(var(--border-width) + 1px) solid var(--border-color); /* More prominent bottom border */
    padding: 16px;
    height: fit-content;
    position: sticky;
    top: 100px;
    box-shadow: var(--shadow-offset) var(--shadow-offset) 0 var(--border-color);
}

.links-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.links-list li {
    padding: 0;
}

.links-list a {
    color: var(--text-primary);
    text-decoration: none;
    transition: all 0.2s ease;
    display: block;
    font-size: 14px;
    line-height: 1.4;
    padding: 12px 16px;
    border: var(--border-width) solid var(--border-color);
    border-bottom: calc(var(--border-width) + 1px) solid var(--border-color); /* More prominent bottom border */
    font-weight: 600;
    background: var(--bg-primary);
    box-shadow: 3px 3px 0 var(--border-color);
}

.links-list a:hover {
    background: #EEF2FF;
    transform: translate(2px, 2px);
    box-shadow: 1px 1px 0 var(--border-color);
}

.links-list a.active {
    background: var(--primary-color);
    color: var(--text-inverse);
    border-color: var(--primary-color);
}

/* News Sidebar */
.news-sidebar {
    display: flex;
    flex-direction: column;
    gap: 24px;
    position: sticky;
    top: 100px;
    height: fit-content;
}

.sidebar-section {
    background: var(--bg-primary);
    border: var(--border-width) solid var(--border-color);
    padding: 20px;
    box-shadow: var(--shadow-offset) var(--shadow-offset) 0 var(--border-color);
}

.sidebar-section h3 {
    margin: 0 0 16px 0;
    font-size: 16px;
    font-weight: 700;
    color: var(--text-primary);
}

.sidebar-section p {
    margin: 0;
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.5;
}

.category-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.category-btn {
    background: var(--bg-primary);
    border: var(--border-width) solid var(--border-color);
    padding: 12px 16px;
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
    cursor: pointer;
    text-align: left;
    transition: all 0.2s ease;
    box-shadow: 3px 3px 0 var(--border-color);
    font-family: inherit;
}

.category-btn:hover {
    background: #EEF2FF;
    transform: translate(2px, 2px);
    box-shadow: 1px 1px 0 var(--border-color);
}

.category-btn.active {
    background: var(--primary-color);
    color: var(--text-inverse);
    border-color: var(--primary-color);
}

/* Projects Section */
.projects {
    padding: 40px 0 60px;
    background: var(--bg-secondary);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    gap: 32px;
}

.project-card {
    background: var(--bg-primary);
    border: var(--border-width) solid var(--border-color);
    border-bottom: calc(var(--border-width) + 1px) solid var(--border-color); /* More prominent bottom border */
    padding: 0;
    transition: all 0.2s ease;
    box-shadow: var(--shadow-offset) var(--shadow-offset) 0 var(--border-color);
    position: relative;
}

.project-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 8px;
    background: var(--secondary-color);
    opacity: 0;
    transition: opacity 0.2s ease;
}

.project-card:hover {
    transform: translate(3px, 3px);
    box-shadow: 3px 3px 0 var(--border-color);
    border-color: var(--primary-color);
}

.project-card:hover::before {
    opacity: 1;
}

.project-content {
    padding: 32px;
}

.project-content h3 {
    margin-bottom: 16px;
    color: var(--text-primary);
    font-size: 24px;
    font-weight: 700;
    line-height: 1.3;
}

.project-content p {
    color: var(--text-secondary);
    line-height: 1.6;
    font-size: 15px;
    font-weight: 400;
    margin-bottom: 20px;
}

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 24px;
}

.tag {
    display: inline-block;
    padding: 6px 14px;
    background: var(--bg-secondary);
    border: 2px solid var(--border-color);
    border-bottom: 3px solid var(--border-color); /* More prominent bottom border */
    color: var(--text-primary);
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Contact Section */
.contact {
    background: #FEF3C7;
    padding: 80px 0;
    border-top: var(--border-width) solid var(--border-color);
    border-bottom: var(--border-width) solid var(--border-color);
}

.contact h2 {
    text-align: center;
    font-size: 36px;
    margin-bottom: 48px;
    color: var(--text-primary);
    font-weight: 800;
    letter-spacing: -0.5px;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    max-width: 1000px;
    margin: 0 auto;
}

.contact-info {
    padding: 0;
}

.contact-info h3 {
    margin-bottom: 16px;
    color: var(--text-primary);
    font-size: 20px;
    font-weight: 700;
}

.contact-info > p {
    color: #4B5563;
    margin-bottom: 32px;
    font-size: 15px;
    line-height: 1.6;
    font-weight: 500;
}

.info-items {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.info-item {
    padding: 20px;
    background: var(--bg-primary);
    border: var(--border-width) solid var(--border-color);
    border-bottom: calc(var(--border-width) + 1px) solid var(--border-color); /* More prominent bottom border */
    box-shadow: var(--shadow-offset) var(--shadow-offset) 0 var(--border-color);
}

.info-item strong {
    display: block;
    margin-bottom: 8px;
    color: #6B7280;
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.info-item p {
    margin: 0;
    color: var(--text-primary);
    font-size: 16px;
    font-weight: 600;
}

/* Contact Form */
.contact-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-group label {
    margin-bottom: 8px;
    font-weight: 700;
    color: var(--text-primary);
    font-size: 14px;
}

.form-group input,
.form-group textarea {
    padding: 14px;
    border: var(--border-width) solid var(--border-color);
    font-family: inherit;
    font-size: 15px;
    font-weight: 400;
    background: var(--bg-primary);
    color: var(--text-primary);
    box-shadow: 3px 3px 0 var(--border-color);
    transition: all 0.2s ease;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    transform: translate(2px, 2px);
    box-shadow: 1px 1px 0 var(--border-color);
}

.form-group textarea {
    resize: vertical;
    min-height: 150px;
}

/* Buttons */
.btn-primary,
.btn-secondary {
    padding: 14px 28px;
    border: var(--border-width) solid var(--border-color);
    font-weight: 700;
    cursor: pointer;
    transition: all 0.2s ease;
    text-decoration: none;
    display: inline-block;
    text-align: center;
    font-size: 16px;
    box-shadow: 4px 4px 0 var(--border-color);
}

.btn-primary {
    background: var(--primary-color);
    color: var(--text-inverse);
    border-color: var(--primary-color);
}

.btn-primary:hover {
    background: var(--secondary-color);
    border-color: var(--secondary-color);
    transform: translate(2px, 2px);
    box-shadow: 2px 2px 0 var(--border-color);
}

.btn-secondary {
    background: var(--bg-primary);
    color: var(--text-primary);
}

.btn-secondary:hover {
    background: var(--primary-color);
    color: var(--text-inverse);
    border-color: var(--primary-color);
    transform: translate(2px, 2px);
    box-shadow: 2px 2px 0 var(--border-color);
}

/* Footer */
footer {
    background: var(--text-primary);
    color: #9CA3AF;
    padding: 32px 0;
    text-align: center;
    border-top: var(--border-width) solid var(--border-color);
}

footer p {
    font-size: 14px;
    font-weight: 500;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .news-layout {
        grid-template-columns: 1fr 280px;
        gap: 24px;
    }

    .projects-grid {
        grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
        gap: 24px;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        gap: 4px;
    }

    .nav-link {
        font-size: 14px;
        padding: 10px 14px;
    }

    .hero {
        padding: 40px 0;
    }

    .hero h1 {
        font-size: 40px;
    }

    .hero p {
        font-size: 16px;
    }

    .contact h2 {
        font-size: 36px;
    }

    .contact-content {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .news-layout {
        grid-template-columns: 1fr;
        gap: 24px;
    }

    .quick-links {
        position: static;
        order: -1;
        top: auto;
    }

    .projects-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }

    .project-content {
        padding: 24px;
    }
}

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

    .navbar .container {
        flex-direction: column;
        gap: 16px;
        padding: 16px;
    }

    .nav-brand {
        font-size: 24px;
    }

    .nav-menu {
        flex-direction: column;
        align-items: stretch;
        gap: 8px;
        width: 100%;
    }

    .nav-link {
        text-align: center;
    }

    .hero h1 {
        font-size: 32px;
    }

    .hero p {
        font-size: 14px;
    }

    .contact h2 {
        font-size: 28px;
    }

    .contact {
        padding: 48px 0;
    }

    .news-feed {
        padding: 24px 0;
    }

    .projects {
        padding: 24px 0 40px;
    }

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

    :root {
        --shadow-offset: 4px;
    }
}