/* Reset and Base Styles */
:root {
    --bg-color: #ffffff;
    --bg-alt: #f9fafb;
    --text-main: #111827;
    --text-muted: #4b5563;
    --accent: #000000;
    --border-color: #e5e7eb;
    --transition: all 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-main);
    line-height: 1.6;
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Playfair Display', serif;
    color: var(--text-main);
}

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

.light-bg {
    background-color: var(--bg-alt);
}

.section-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 100px 5%;
}

.section-title {
    font-size: 2.5rem;
    margin-bottom: 3rem;
    font-weight: 700;
    position: relative;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 12px 32px;
    background-color: var(--accent);
    color: #ffffff;
    text-decoration: none;
    font-weight: 500;
    border-radius: 4px;
    border: 1px solid var(--accent);
    transition: var(--transition);
    cursor: pointer;
    font-size: 0.95rem;
}

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

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

.btn-outline:hover {
    background-color: var(--accent);
    color: #ffffff;
}

.btn-full {
    width: 100%;
    text-align: center;
}

/* Navbar */
#navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    transition: var(--transition);
    padding: 20px 0;
}

#navbar.scrolled {
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    padding: 15px 0;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 5%;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-family: 'Playfair Display', serif;
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--text-main);
    text-decoration: none;
    letter-spacing: -1px;
}

nav ul {
    display: flex;
    align-items: center;
    list-style: none;
}

nav ul li {
    margin-left: 30px;
}

nav ul li a {
    color: var(--text-main);
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 500;
    position: relative;
    transition: var(--transition);
}

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

nav ul li a:hover::after {
    width: 100%;
}

nav .fa-bars, nav .fa-xmark {
    display: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-main);
}

/* Header / Hero */
#header {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 80px;
}

.header-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 5%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 50px;
}

.header-text {
    flex: 1;
}

.subtitle {
    font-size: 1rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--text-muted);
    margin-bottom: 15px;
    font-weight: 600;
}

.header-text h1 {
    font-size: 4.5rem;
    line-height: 1.1;
    margin-bottom: 20px;
}

.header-text h1 span {
    color: var(--text-muted);
    font-style: italic;
}

.summary {
    font-size: 1.1rem;
    color: var(--text-muted);
    margin-bottom: 40px;
    max-width: 500px;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    margin-bottom: 40px;
}

.social-links-hero a {
    color: var(--text-main);
    font-size: 1.5rem;
    margin-right: 20px;
    transition: var(--transition);
}

.social-links-hero a:hover {
    color: var(--text-muted);
    transform: translateY(-3px);
}

.header-image {
    flex: 1;
    display: flex;
    justify-content: flex-end;
}

.header-image img {
    width: 100%;
    max-width: 450px;
    border-radius: 20px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.08);
    object-fit: cover;
}

/* About Section */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-image img {
    width: 100%;
    border-radius: 20px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.08);
}

.about-content p {
    color: var(--text-muted);
    margin-bottom: 20px;
    font-size: 1.05rem;
}

.skills-container {
    margin-top: 40px;
}

.skills-container h3 {
    font-family: 'Inter', sans-serif;
    font-size: 1.2rem;
    margin-bottom: 20px;
}

.skills-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.skills-tags span {
    background-color: var(--bg-alt);
    padding: 8px 16px;
    border-radius: 30px;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-main);
    border: 1px solid var(--border-color);
}

/* Experience Timeline */
.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.timeline::before {
    content: '';
    position: absolute;
    width: 2px;
    height: 100%;
    background-color: var(--border-color);
    left: 20px;
    top: 0;
}

.timeline-item {
    position: relative;
    padding-left: 60px;
    margin-bottom: 50px;
}

.timeline-item:last-child {
    margin-bottom: 0;
}

.timeline-dot {
    position: absolute;
    width: 16px;
    height: 16px;
    background-color: var(--accent);
    border-radius: 50%;
    left: 13px;
    top: 5px;
    border: 4px solid var(--bg-alt);
}

.timeline-content {
    background: var(--bg-color);
    padding: 30px;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.03);
    border: 1px solid var(--border-color);
}

.timeline-content h3 {
    font-family: 'Inter', sans-serif;
    font-size: 1.3rem;
    margin-bottom: 5px;
}

.timeline-content h4 {
    font-family: 'Inter', sans-serif;
    font-size: 1rem;
    color: var(--text-muted);
    font-weight: 500;
    margin-bottom: 10px;
}

.timeline-content .date {
    display: inline-block;
    padding: 4px 12px;
    background: var(--bg-alt);
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-muted);
    margin-bottom: 20px;
}

.timeline-content ul {
    list-style-position: inside;
    color: var(--text-muted);
}

.timeline-content ul li {
    margin-bottom: 10px;
    font-size: 0.95rem;
}

/* Projects */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 30px;
}

.project-card {
    background: var(--bg-color);
    border-radius: 12px;
    padding: 40px 30px;
    border: 1px solid var(--border-color);
    transition: var(--transition);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.02);
}

.project-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
}

.project-content h3 {
    font-family: 'Inter', sans-serif;
    font-size: 1.4rem;
    margin-bottom: 5px;
}

.project-content .role {
    font-size: 0.9rem;
    color: var(--text-muted);
    font-weight: 600;
    margin-bottom: 15px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.project-content p {
    color: var(--text-muted);
    font-size: 0.95rem;
    margin-bottom: 25px;
}

.project-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--accent);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.9rem;
    transition: var(--transition);
}

.project-link:hover {
    gap: 12px;
}

.project-links {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
}

.project-link.disabled {
    color: var(--text-muted);
    cursor: not-allowed;
    pointer-events: none;
}

/* Education */
.edu-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.edu-card {
    background: var(--bg-color);
    padding: 40px 30px;
    border-radius: 12px;
    text-align: center;
    border: 1px solid var(--border-color);
}

.edu-icon {
    font-size: 2.5rem;
    color: var(--accent);
    margin-bottom: 20px;
}

.edu-card h3 {
    font-family: 'Inter', sans-serif;
    font-size: 1.2rem;
    margin-bottom: 10px;
}

.edu-card h4 {
    font-family: 'Inter', sans-serif;
    font-size: 0.95rem;
    color: var(--text-muted);
    margin-bottom: 15px;
    font-weight: 500;
}

.edu-card p {
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* Contact */
.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
}

.contact-desc {
    color: var(--text-muted);
    font-size: 1.1rem;
    margin-bottom: 40px;
}

.contact-details {
    margin-bottom: 40px;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 20px;
    margin-bottom: 20px;
}

.contact-item i {
    font-size: 1.5rem;
    color: var(--accent);
}

.contact-item span {
    font-size: 1.05rem;
    color: var(--text-main);
    font-weight: 500;
}

.social-links-contact a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 45px;
    height: 45px;
    background: var(--bg-alt);
    border-radius: 50%;
    color: var(--text-main);
    font-size: 1.2rem;
    margin-right: 15px;
    transition: var(--transition);
    text-decoration: none;
}

.social-links-contact a:hover {
    background: var(--accent);
    color: #ffffff;
    transform: translateY(-3px);
}

.contact-form {
    background: var(--bg-alt);
    padding: 40px;
    border-radius: 12px;
}

.input-group {
    margin-bottom: 20px;
}

.input-group input,
.input-group textarea {
    width: 100%;
    padding: 15px 20px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background: var(--bg-color);
    font-family: 'Inter', sans-serif;
    font-size: 1rem;
    color: var(--text-main);
    transition: var(--transition);
}

.input-group input:focus,
.input-group textarea:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(0, 0, 0, 0.05);
}

#msg {
    display: block;
    margin-top: 15px;
    font-weight: 500;
    text-align: center;
}

/* Footer */
footer {
    text-align: center;
    padding: 30px;
    background: var(--bg-color);
    border-top: 1px solid var(--border-color);
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* Responsive Design */
@media (max-width: 992px) {
    .header-container,
    .about-grid,
    .contact-wrapper {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .header-text h1 {
        font-size: 3.5rem;
    }

    .header-image {
        justify-content: center;
        margin-top: 40px;
    }

    .hero-buttons {
        justify-content: center;
    }

    .skills-tags {
        justify-content: center;
    }
    
    .contact-item {
        justify-content: center;
    }
}

@media (max-width: 768px) {
    nav .fa-bars, nav .fa-xmark {
        display: block;
    }

    nav ul {
        position: fixed;
        top: 0;
        right: -250px;
        width: 250px;
        height: 100vh;
        background: var(--bg-color);
        flex-direction: column;
        align-items: flex-start;
        padding: 80px 40px;
        box-shadow: -5px 0 15px rgba(0, 0, 0, 0.05);
        transition: right 0.4s ease;
    }

    nav ul li {
        margin: 0 0 25px 0;
    }

    nav .fa-xmark {
        position: absolute;
        top: 30px;
        right: 30px;
    }

    .header-text h1 {
        font-size: 2.8rem;
    }

    .section-title {
        font-size: 2rem;
    }

    .timeline::before {
        left: 0;
    }

    .timeline-item {
        padding-left: 30px;
    }

    .timeline-dot {
        left: -7px;
    }
}