:root {
    --bg-color: #fafafa;
    --text-primary: #111111;
    --text-secondary: #555555;
    --accent-color: #7a1f1f; 
    --card-bg: #ffffff;
    --transition: all 0.3s ease-in-out;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

html {
    scroll-behavior: smooth;
}

body {
    background-color: var(--bg-color);
    color: var(--text-primary);
    line-height: 1.6;
}


.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 2rem 5%;
    position: fixed;
    width: 100%;
    top: 0;
    background: rgba(250, 250, 250, 0.9);
    backdrop-filter: blur(10px);
    z-index: 1000;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -0.5px;
}

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

.nav-links a {
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 500;
    position: relative;
    transition: var(--transition);
}


.nav-links a::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -4px;
    left: 0;
    background-color: var(--accent-color);
    transition: var(--transition);
}

.nav-links a:hover::after {
    width: 100%;
}


.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 10%;
    margin-top: 60px;
}

.hero-content {
    max-width: 50%;
}

.hero h1 {
    font-size: 4rem;
    line-height: 1.1;
    margin-bottom: 1rem;
    letter-spacing: -1px;
}

.hero p {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
}


.about-section {
    padding: 6rem 10%;
    background-color: var(--card-bg); 
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
    transition: var(--transition);
}

.about-container {
    display: flex;
    gap: 4rem;
    max-width: 1200px;
    margin: 0 auto;
    align-items: center;
}

.about-text-box {
    flex: 1;
}

.about-text {
    font-size: 1.15rem;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 1.5rem;
    transition: var(--transition);
}

.about-text strong {
    color: var(--text-primary);
    font-weight: 600;
}


.skills-wrapper {
    flex: 0.8;
    padding: 2.5rem;
    background-color: var(--bg-color);
    border-radius: 16px;
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

html:has(#theme-toggle:checked) .skills-wrapper {
    box-shadow: inset 0 4px 20px rgba(0,0,0,0.5);
}

.skills-wrapper h3 {
    margin-bottom: 1.5rem;
    font-size: 1.3rem;
}

.skills-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
}

.skill-tag {
    padding: 0.6rem 1.2rem;
    background: transparent;
    color: var(--text-primary);
    border: 1px solid var(--text-secondary);
    border-radius: 30px;
    font-size: 0.9rem;
    font-weight: 500;
    cursor: default;
    transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}


.skill-tag:hover {
    background-color: var(--accent-color);
    color: #ffffff;
    border-color: var(--accent-color);
    transform: translateY(-4px) scale(1.05);
    box-shadow: 0 10px 15px rgba(122, 31, 31, 0.2);
}


@media (max-width: 900px) {
    .about-container {
        flex-direction: column;
        gap: 2rem;
    }
    .skills-wrapper {
        width: 100%;
    }
}

.hero-image img {
    width: 400px;
    height: 500px;
    object-fit: cover;
    border-radius: 12px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.1);
    transition: var(--transition);
}

.hero-image img:hover {
    transform: translateY(-10px);
    box-shadow: 0 30px 50px rgba(0,0,0,0.15);
}

.btn {
    display: inline-block;
    padding: 0.8rem 2rem;
    background-color: var(--text-primary);
    color: var(--bg-color);
    text-decoration: none;
    border-radius: 30px;
    font-weight: 500;
    transition: var(--transition);
    border: 2px solid var(--text-primary);
}

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

.btn-outline {
    background-color: transparent;
    color: var(--text-primary);
}

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


.projects-section {
    padding: 5rem 10%;
}

.projects-section h2 {
    font-size: 2.5rem;
    margin-bottom: 3rem;
    text-align: center;
}

.project-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.project-card {
    background-color: var(--card-bg);
    padding: 2.5rem;
    border-radius: 12px;
    border: 1px solid #eaeaea;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}


.project-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(0,0,0,0.05);
    border-color: var(--accent-color);
}

.project-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.project-card p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

.project-link {
    text-decoration: none;
    color: var(--accent-color);
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    transition: var(--transition);
}

.project-link:hover {
    gap: 5px; 

}
.contact-section {
    padding: 6rem 10%;
}

.contact-container {
    max-width: 600px;
    margin: 0 auto;
    padding: 3rem;
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.03);
    transition: var(--transition);
}

html:has(#theme-toggle:checked) .contact-container {
    box-shadow: 0 10px 40px rgba(0,0,0,0.4);
}

.contact-container:hover {
    border-color: var(--accent-color);
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 2.5rem; 
}

.input-group {
    position: relative;
}


.input-group input,
.input-group textarea {
    width: 100%;
    padding: 10px 0;
    font-size: 1rem;
    color: var(--text-primary);
    background: transparent;
    border: none;
    border-bottom: 2px solid var(--border-color);
    outline: none;
    transition: var(--transition);
    resize: none; 
}


.input-group label {
    position: absolute;
    top: 10px;
    left: 0;
    font-size: 1rem;
    color: var(--text-secondary);
    pointer-events: none; 
    transition: 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}


.input-group input:focus ~ label,
.input-group input:valid ~ label,
.input-group textarea:focus ~ label,
.input-group textarea:valid ~ label {
    top: -20px;
    font-size: 0.85rem;
    color: var(--accent-color);
    font-weight: 600;
}


.input-group input:focus,
.input-group textarea:focus {
    border-bottom-color: var(--accent-color);
}


.submit-btn {
    cursor: pointer;
    border: none;
    width: 100%;
    margin-top: 1rem;
    font-size: 1.1rem;
}


footer {
    text-align: center;
    padding: 2rem;
    color: var(--text-secondary);
    font-size: 0.9rem;
}


@media (max-width: 768px) {
    .hero {
        flex-direction: column;
        text-align: center;
        justify-content: center;
        gap: 3rem;
    }
    
    .hero-content {
        max-width: 100%;
    }
    
    .hero h1 {
        font-size: 3rem;
    }
    
    .hero-image img {
        width: 100%;
        height: auto;
    }
    
    .nav-links {
        display: none; 
    }
}