/* =====================
   General Styles
   ===================== */

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

:root {
    --primary-color: #0066cc;
    --secondary-color: #0052a3;
    --dark-bg: #0f0f0f;
    --light-bg: #ffffff;
    --text-dark: #1a1a1a;
    --text-light: #666666;
    --border-color: #e0e0e0;
    --hover-color: #0052a3;
    --transition: all 0.3s ease;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #ffffff;
    color: var(--text-dark);
    line-height: 1.6;
}

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

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

/* =====================
   Navigation Bar
   ===================== */

.navbar {
    position: sticky;
    top: 0;
    background-color: var(--light-bg);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    z-index: 1000;
}

.navbar-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.navbar-brand {
    font-size: 1.5rem;
    font-weight: bold;
}

.logo {
    color: var(--primary-color);
    font-weight: 700;
}

.navbar-menu {
    display: flex;
    gap: 2rem;
    align-items: center;
}

.nav-link {
    color: var(--text-dark);
    font-weight: 500;
    transition: var(--transition);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: var(--transition);
}

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

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background-color: var(--text-dark);
    margin: 4px 0;
    transition: var(--transition);
    border-radius: 2px;
}

/* =====================
   Hero Section
   ===================== */

.hero {
    min-height: 90vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #ffffff;
    color: var(--text-dark);
    overflow: hidden;
    position: relative;
    padding: 60px 0;
}

.hero-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(20px);
    }
}

.hero-content {
    position: relative;
    z-index: 1;
}

.hero-content h1 {
    font-size: 3.5rem;
    margin-bottom: 1rem;
    animation: slideInDown 0.8s ease;
}

.highlight {
    color: var(--primary-color);
}

.hero-content .subtitle {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    opacity: 0.9;
    animation: slideInUp 0.8s ease 0.2s backwards;
    color: var(--text-light);
}

.hero-content .description {
    font-size: 1.1rem;
    margin-bottom: 2rem;
    opacity: 0.85;
    animation: slideInUp 0.8s ease 0.4s backwards;
    color: var(--text-light);
}

.hero-image {
    position: relative;
    animation: slideInUp 0.8s ease 0.2s backwards;
}

.hero-image img {
    width: 50%;
    border-radius: 15px;
    transition: var(--transition);
}

.hero-image:hover img {
    transform: scale(1.05);
}

@keyframes slideInDown {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    animation: slideInUp 0.8s ease 0.6s backwards;
}

/* =====================
   Buttons
   ===================== */

.btn {
    padding: 12px 30px;
    border: 2px solid transparent;
    border-radius: 50px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: inline-block;
    text-align: center;
}

.btn-primary {
    background: var(--primary-color);
    color: white;
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(102, 126, 234, 0.4);
}

.btn-secondary {
    background: transparent;
    color: white;
    border-color: white;
}

.btn-secondary:hover {
    background: white;
    color: var(--primary-color);
}

.btn-small {
    padding: 8px 16px;
    font-size: 0.9rem;
}

/* =====================
   Sections
   ===================== */

.section {
    padding: 80px 0;
}

.section-title {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 3rem;
    color: var(--text-dark);
    position: relative;
    display: inline-block;
    width: 100%;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 4px;
    background: var(--primary-color);
    border-radius: 2px;
}

/* =====================
   About Section
   ===================== */

.about-content {
    display: flex;
    justify-content: center;
}

.about-text {
    max-width: 800px;
    text-align: left;
}

.about-text p {
    margin-bottom: 1rem;
    color: var(--text-light);
    font-size: 1.05rem;
}

.skills {
    margin-top: 2rem;
}

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

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 1rem;
}

.languages {
    margin-top: 2rem;
}

.languages h3 {
    margin-bottom: 1rem;
    font-size: 1.3rem;
}

.language-list {
    list-style: none;
    color: var(--text-light);
    display: grid;
    gap: 0.5rem;
    padding: 0;
}

.language-list li strong {
    color: var(--text-dark);
}

.skill-tag {
    background: var(--primary-color);
    color: white;
    padding: 10px 15px;
    border-radius: 30px;
    text-align: center;
    font-weight: 500;
    transition: var(--transition);
    cursor: default;
}

.skill-tag:hover {
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(102, 126, 234, 0.3);
}



/* =====================
   Timeline
   ===================== */

.timeline {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
    display: flex;
    flex-direction: column;
    gap: 2rem;
    align-items: center;
}

.timeline::before {
    display: none;
}

.timeline-item {
    width: 100%;
    position: relative;
    text-align: left;
}

.timeline-item::before {
    display: none;
}

.timeline-date {
    font-weight: bold;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
    font-size: 1rem;
}

.timeline-content {
    background: white;
    padding: 1.5rem;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
    transition: var(--transition);
}

.timeline-content:hover {
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
    transform: translateY(-5px);
}

.timeline-content h3 {
    margin-bottom: 0.5rem;
    color: var(--text-dark);
}

.institution {
    color: var(--primary-color);
    font-weight: 600;
    font-size: 0.95rem;
}

.description {
    color: var(--text-light);
    margin-top: 0.5rem;
    font-size: 0.95rem;
}

.responsibilities {
    margin-top: 1rem;
    padding-left: 1.5rem;
    color: var(--text-light);
    list-style-position: inside;
}

.responsibilities li {
    margin-bottom: 0.5rem;
}

/* =====================
   Projects Section
   ===================== */

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

.project-card {
    background: white;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
}

.project-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.2);
}

.project-image {
    width: 100%;
    height: 200px;
    overflow: hidden;
    background: var(--primary-color);
}

.project-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.project-card:hover .project-image img {
    transform: scale(1.1);
}

.project-content {
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.project-content h3 {
    margin-bottom: 0.5rem;
    color: var(--text-dark);
}

.project-description {
    color: var(--text-light);
    margin-bottom: 1rem;
    font-size: 0.95rem;
    flex-grow: 1;
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.tech-tag {
    background: #f0f0f0;
    color: var(--primary-color);
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 500;
}

.project-links {
    display: flex;
    gap: 1rem;
}

/* =====================
   Contact Section
   ===================== */

.contact {
    display: none;
}

.contact-intro {
    text-align: center;
    font-size: 1.1rem;
    margin-bottom: 3rem;
    opacity: 0.95;
}

.contact-content {
    margin-bottom: 3rem;
}

.contact-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.contact-item {
    display: flex;
    gap: 1rem;
}

.contact-item i {
    font-size: 1.5rem;
    margin-top: 0.25rem;
}

.contact-item h4 {
    margin-bottom: 0.5rem;
}

.contact-item a {
    color: white;
    opacity: 0.9;
    transition: var(--transition);
}

.contact-item a:hover {
    opacity: 1;
}

.social-links {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-bottom: 3rem;
}

.social-link {
    width: 50px;
    height: 50px;
    border: 2px solid white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    color: white;
    transition: var(--transition);
}

.social-link:hover {
    background: white;
    color: var(--primary-color);
    transform: translateY(-5px);
}

.contact-form {
    max-width: 500px;
    margin: 0 auto;
}

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

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 15px;
    border: none;
    border-radius: 5px;
    background: rgba(255, 255, 255, 0.1);
    color: white;
    font-size: 1rem;
    font-family: inherit;
    transition: var(--transition);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: rgba(255, 255, 255, 0.7);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    background: rgba(255, 255, 255, 0.2);
    box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.2);
}

/* =====================
   Footer
   ===================== */

.footer {
    background-color: var(--dark-bg);
    color: white;
    padding: 2rem 0;
    text-align: center;
}

.footer p {
    margin: 0.5rem 0;
    opacity: 0.8;
}

.heart {
    color: #e74c3c;
    animation: heartbeat 1s infinite;
}

@keyframes heartbeat {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.2);
    }
}

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

@media (max-width: 768px) {
    .navbar-menu {
        display: none;
        position: absolute;
        top: 70px;
        left: 0;
        right: 0;
        background-color: var(--light-bg);
        flex-direction: column;
        gap: 0;
        border-bottom: 2px solid var(--border-color);
    }

    .navbar-menu.active {
        display: flex;
    }

    .nav-link {
        padding: 1rem;
        display: block;
        border-bottom: 1px solid var(--border-color);
    }

    .hamburger {
        display: flex;
    }

    .hamburger.active span:nth-child(1) {
        transform: rotate(45deg) translate(8px, 8px);
    }

    .hamburger.active span:nth-child(2) {
        opacity: 0;
    }

    .hamburger.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -7px);
    }

    .hero-container {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .hero-content h1 {
        font-size: 2.5rem;
    }

    .hero-content .subtitle {
        font-size: 1.2rem;
    }

    .hero-buttons {
        flex-direction: column;
    }

    .btn {
        width: 100%;
    }

    .about-content {
        grid-template-columns: 1fr;
    }

    .timeline::before {
        left: 0;
    }

    .timeline-item {
        padding-left: 50px !important;
        padding-right: 30px;
        text-align: left !important;
    }

    .timeline-item::before {
        left: -18px;
    }

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

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

    .contact-info {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }

    .hero-content h1 {
        font-size: 2rem;
    }

    .hero-content .subtitle {
        font-size: 1rem;
    }

    .section {
        padding: 50px 0;
    }

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

    .skills-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .social-links {
        gap: 1rem;
    }

    .social-link {
        width: 45px;
        height: 45px;
        font-size: 1rem;
    }
}