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

:root {
    --primary-color: #1a1a1a;
    --secondary-color: #666666;
    --light-color: #f5f5f5;
    --border-color: #e0e0e0;
    --accent-color: #0066cc;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--primary-color);
    background-color: #ffffff;
}

.container {
    max-width: 900px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Navigation */
.navbar {
    position: sticky;
    top: 0;
    background: white;
    border-bottom: 1px solid var(--border-color);
    padding: 1.5rem 0;
    z-index: 100;
    box-shadow: 0 1px 3px rgba(0,0,0,0.05);
}

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

.logo {
    font-family: 'Playfair Display', serif;
    font-size: 28px;
    font-weight: 700;
    letter-spacing: 0px;
    background: linear-gradient(135deg, var(--accent-color) 0%, #0052a3 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    transition: transform 0.3s ease;
    display: inline-block;
}

.logo:hover {
    transform: scale(1.05);
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-link {
    text-decoration: none;
    color: var(--secondary-color);
    font-weight: 500;
    font-size: 14px;
    cursor: pointer;
    transition: color 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.nav-link:hover,
.nav-link.active {
    color: var(--accent-color);
}

/* Hero Section */
.hero {
    padding: 5rem 0;
    min-height: 60vh;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, #f5f5f5 0%, #ffffff 100%);
}

.hero-content {
    text-align: center;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    letter-spacing: -1px;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--secondary-color);
    margin-bottom: 2rem;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.75rem 2rem;
    border-radius: 6px;
    text-decoration: none;
    font-weight: 500;
    border: none;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 14px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.btn-primary {
    background-color: var(--accent-color);
    color: white;
    border: 2px solid var(--accent-color);
}

.btn-primary:hover {
    background-color: transparent;
    color: var(--accent-color);
}

/* Section Title */
.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 3rem;
    text-align: center;
}

/* Blog Grid */
.blog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 2rem;
}

.blog-card {
    background: white;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 2rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.blog-card:hover {
    border-color: var(--accent-color);
    box-shadow: 0 4px 12px rgba(0,102,204,0.1);
    transform: translateY(-2px);
}

.blog-card h3 {
    font-size: 1.3rem;
    margin-bottom: 0.75rem;
    color: var(--primary-color);
}

.blog-date {
    font-size: 0.85rem;
    color: var(--secondary-color);
    margin-bottom: 1rem;
}

.blog-excerpt {
    color: var(--secondary-color);
    line-height: 1.7;
    margin-bottom: 1rem;
}

.read-more {
    color: var(--accent-color);
    text-decoration: none;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.read-more:hover {
    text-decoration: underline;
}

/* About Section */
.about-content {
    max-width: 700px;
    margin: 0 auto;
    padding: 3rem 0;
}

.about-text p {
    font-size: 1.1rem;
    line-height: 1.8;
    margin-bottom: 1.5rem;
    color: var(--secondary-color);
}

/* Contact Section */
.contact-content {
    max-width: 500px;
    margin: 0 auto;
    padding: 2rem 0;
}

.contact-form {
    background: var(--light-color);
    padding: 2.5rem;
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    font-size: 0.95rem;
}

.form-input,
.form-textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-family: inherit;
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

.form-input:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--accent-color);
    background-color: white;
}

.form-textarea {
    resize: vertical;
}

.form-message {
    padding: 1rem;
    border-radius: 6px;
    margin-top: 1rem;
    text-align: center;
    font-weight: 500;
}

.form-message.success {
    background-color: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.form-message.error {
    background-color: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

/* Pages */
.main-content {
    padding: 3rem 0;
    min-height: calc(100vh - 200px);
}

.page {
    display: none;
    animation: fadeIn 0.5s ease-in;
}

.page.active {
    display: block;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Footer */
.footer {
    background: var(--light-color);
    border-top: 1px solid var(--border-color);
    padding: 3rem 0;
    margin-top: 5rem;
    text-align: center;
    color: var(--secondary-color);
    font-size: 0.95rem;
}

.footer-links {
    margin-top: 1rem;
}

.footer-links a {
    color: var(--accent-color);
    text-decoration: none;
    margin: 0 1rem;
    font-weight: 500;
}

.footer-links a:hover {
    text-decoration: underline;
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-links {
        gap: 1rem;
        font-size: 12px;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .section-title {
        font-size: 1.8rem;
    }

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

    .contact-form {
        padding: 1.5rem;
    }
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: 3rem;
    color: var(--secondary-color);
}

.empty-state p {
    font-size: 1.1rem;
}

/* Blog Detail Page */
.blog-detail {
    max-width: 700px;
    margin: 0 auto;
}

.blog-detail h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.blog-detail-date {
    color: var(--secondary-color);
    font-size: 0.95rem;
    margin-bottom: 2rem;
    display: inline-block;
}

.blog-detail-content {
    color: var(--secondary-color);
    line-height: 1.9;
    font-size: 1.05rem;
}

.blog-detail-content p {
    margin-bottom: 1.5rem;
    text-align: justify;
}

.blog-detail-content p:first-letter {
    font-weight: 600;
}

.btn-back {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--accent-color);
    font-weight: 500;
    font-size: 0.95rem;
    padding: 0.5rem 0;
    transition: gap 0.3s ease;
}

.btn-back:hover {
    gap: 0.8rem;
}

@media (max-width: 768px) {
    .blog-detail h1 {
        font-size: 1.8rem;
    }

    .blog-detail-content {
        font-size: 1rem;
    }

    .blog-detail-content p {
        text-align: left;
    }
}

/* Projects Page */
.projects-content {
    padding: 2rem 0;
}

.project-section {
    margin-bottom: 4rem;
}

.project-section-title {
    font-size: 1.6rem;
    font-weight: 600;
    margin-bottom: 2rem;
    color: var(--primary-color);
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.project-section-title i {
    color: var(--accent-color);
    font-size: 1.8rem;
}

.project-card {
    background: white;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 2rem;
    text-align: center;
    transition: all 0.3s ease;
}

.project-card:hover {
    border-color: var(--accent-color);
    box-shadow: 0 8px 20px rgba(0, 102, 204, 0.12);
    transform: translateY(-4px);
}

.project-icon {
    font-size: 3rem;
    color: var(--accent-color);
    margin-bottom: 1rem;
    display: flex;
    justify-content: center;
    align-items: center;
}

.project-icon.yt-icon {
    color: #ff0000;
}

.project-card h4 {
    font-size: 1.3rem;
    margin-bottom: 0.75rem;
    color: var(--primary-color);
}

.project-card p {
    color: var(--secondary-color);
    margin-bottom: 1.5rem;
    line-height: 1.6;
    font-size: 0.95rem;
}

.project-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--accent-color);
    text-decoration: none;
    font-weight: 500;
    padding: 0.75rem 1.5rem;
    border: 2px solid var(--accent-color);
    border-radius: 6px;
    transition: all 0.3s ease;
}

.project-link:hover {
    background-color: var(--accent-color);
    color: white;
}

.github-card {
    max-width: 400px;
    margin: 0 auto;
}

.youtube-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.websites-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.web-icon {
    color: var(--accent-color) !important;
}

.website-card h4 {
    font-family: 'Playfair Display', serif;
}

@media (max-width: 768px) {
    .project-section-title {
        font-size: 1.3rem;
    }

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

    .project-card {
        padding: 1.5rem;
    }

    .project-icon {
        font-size: 2.5rem;
    }
}