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

:root {
    --bg-primary: #1e1e1e;
    --bg-secondary: #252526;
    --bg-tertiary: #2d2d30;
    --text-primary: #cccccc;
    --text-secondary: #969696;
    --accent-blue: #007acc;
    --accent-green: #4ec9b0;
    --accent-orange: #ce9178;
    --accent-purple: #c586c0;
    --border: #3e3e42;
    --shadow: rgba(0, 0, 0, 0.3);
}

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

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

/* Header */
.header {
    position: fixed;
    top: 0;
    width: 100%;
    background-color: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    z-index: 1000;
    backdrop-filter: blur(10px);
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
}

/* Animated Text in Nav Brand - Enhanced */
.nav-brand h2 {
    color: var(--text-primary);
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    line-height: 1.2;
}

.animated-text {
    position: relative;
    height: 1.2em; /* Use em instead of rem for better alignment */
    overflow: hidden;
    color: var(--accent-blue);
    display: inline-flex;
    align-items: center;
    min-width: 100px;
    line-height: 1.2;
}

.text-item {
    position: absolute;
    top: 50%;
    left: 0;
    transform: translateY(50%); /* Start from below, but centered */
    opacity: 0;
    transition: all 0.5s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    white-space: nowrap;
    width: 100%;
    line-height: 1.2;
}

.text-item.active {
    opacity: 1;
    transform: translateY(-50%); /* Center vertically */
}

.text-item.exit {
    opacity: 0;
    transform: translateY(-150%); /* Exit to above */
    transition: all 0.3s ease-in;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
    align-items: center;
}

.nav-link {
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--accent-blue);
    transition: width 0.3s ease;
}

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

.btn-download {
    background-color: var(--accent-green);
    color: var(--bg-primary);
    padding: 0.5rem 1rem;
    border-radius: 5px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.btn-download:hover {
    background-color: var(--accent-blue);
    transform: translateY(-2px);
}

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

.hamburger span {
    width: 25px;
    height: 3px;
    background-color: var(--text-primary);
    margin: 3px 0;
    transition: 0.3s;
}

/* Hero Section */
.hero {
    padding: 120px 0 80px;
    text-align: center;
}

.hero-content h1 {
    font-size: 3.5rem;
    margin-bottom: 1rem;
    font-weight: 700;
}

.highlight {
    color: var(--accent-blue);
}

.hero-subtitle {
    font-size: 1.5rem;
    color: var(--accent-green);
    margin-bottom: 1rem;
}

.hero-description {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* Buttons */
.btn {
    padding: 0.8rem 2rem;
    border: none;
    border-radius: 5px;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.3s ease;
    display: inline-block;
}

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

.btn-primary:hover {
    background-color: #005a9e;
    transform: translateY(-2px);
}

.btn-secondary {
    background-color: transparent;
    color: var(--accent-blue);
    border: 2px solid var(--accent-blue);
}

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

/* Sections */
section {
    padding: 80px 0;
}

.section-title {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 3rem;
    color: var(--accent-blue);
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 3px;
    background-color: var(--accent-green);
}

/* About Section */
.about {
    background-color: var(--bg-secondary);
}

.about-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.about-text p {
    font-size: 1.1rem;
    margin-bottom: 2rem;
    color: var(--text-secondary);
}

.skills {
    display: flex;
    justify-content: center;
    gap: 2rem;
    flex-wrap: wrap;
}

.skill-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem;
    background-color: var(--bg-tertiary);
    border-radius: 10px;
    transition: transform 0.3s ease;
}

.skill-item:hover {
    transform: translateY(-5px);
}

.skill-item i {
    font-size: 2rem;
    color: var(--accent-blue);
}

/* Skills Categories */
.skills-categories {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.skill-category {
    background-color: var(--bg-tertiary);
    border-radius: 15px;
    padding: 1.5rem;
    transition: transform 0.3s ease;
}

.skill-category:hover {
    transform: translateY(-5px);
}

.category-title {
    color: var(--accent-blue);
    font-size: 1.1rem;
    margin-bottom: 1rem;
    text-align: center;
    font-weight: 600;
    border-bottom: 2px solid var(--accent-green);
    padding-bottom: 0.5rem;
}

.skill-category .skills {
    display: flex;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.skill-category .skill-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.3rem;
    padding: 0.8rem;
    background-color: var(--bg-primary);
    border-radius: 8px;
    transition: transform 0.3s ease;
    min-width: 70px;
}

.skill-category .skill-item:hover {
    transform: translateY(-3px);
}

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

.skill-category .skill-item span {
    font-size: 0.8rem;
    text-align: center;
}

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

.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    width: 2px;
    height: 100%;
    background-color: var(--accent-blue);
}

.timeline-item {
    position: relative;
    margin: 2rem 0;
    display: flex;
    justify-content: flex-end;
    width: 50%;
}

.timeline-item:nth-child(even) {
    margin-left: 50%;
    justify-content: flex-start;
}

.timeline-dot {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    width: 15px;
    height: 15px;
    background-color: var(--accent-green);
    border-radius: 50%;
    z-index: 1;
}

.timeline-content {
    background-color: var(--bg-secondary);
    padding: 1.5rem;
    border-radius: 10px;
    margin: 0 2rem;
    box-shadow: 0 5px 15px var(--shadow);
}

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

.company {
    color: var(--accent-green);
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.period {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 1rem;
}

/* Projects Section */
.projects {
    background-color: var(--bg-secondary);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    max-width: 1000px;
    margin: 0 auto;
}

.project-card {
    background-color: var(--bg-tertiary);
    border-radius: 15px;
    overflow: hidden;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.project-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px var(--shadow);
}

.project-image {
    height: 200px;
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-green));
    display: flex;
    align-items: center;
    justify-content: center;
}

.project-image i {
    font-size: 4rem;
    color: white;
}

.project-content {
    padding: 1.5rem;
}

.project-content h3 {
    color: var(--accent-blue);
    margin-bottom: 1rem;
}

.project-tech {
    display: flex;
    gap: 0.5rem;
    margin: 1rem 0;
    flex-wrap: wrap;
}

.project-tech span {
    background-color: var(--bg-primary);
    color: var(--accent-green);
    padding: 0.3rem 0.8rem;
    border-radius: 15px;
    font-size: 0.8rem;
}

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

.btn-link {
    color: var(--text-primary);
    font-size: 1.5rem;
    transition: color 0.3s ease;
}

.url-link {
    color: var(--text-primary);
    font-size: 1.0rem;
    transition: color 0.3s ease;
}

.btn-link:hover {
    color: var(--accent-blue);
}

/* Contact Section */
.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    max-width: 1000px;
    margin: 0 auto;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background-color: var(--bg-secondary);
    border-radius: 10px;
}

.contact-item i {
    color: var(--accent-blue);
    font-size: 1.2rem;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.contact-form input,
.contact-form textarea {
    padding: 1rem;
    background-color: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 5px;
    color: var(--text-primary);
    font-family: inherit;
}

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

/* Footer */
.footer {
    background-color: var(--bg-tertiary);
    padding: 2rem 0;
    text-align: center;
    border-top: 1px solid var(--border);
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background-color: var(--bg-secondary);
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: 0 10px 27px rgba(0, 0, 0, 0.05);
        padding: 2rem 0;
    }

    .nav-menu.active {
        left: 0;
    }

    .hamburger {
        display: flex;
    }

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

    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }

    .timeline::before {
        left: 20px;
    }

    .timeline-item {
        width: 100%;
        margin-left: 0;
        justify-content: flex-start;
    }

    .timeline-item:nth-child(even) {
        margin-left: 0;
    }

    .timeline-dot {
        left: 20px;
    }

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

    .skills {
        gap: 1rem;
    }

    .skill-item {
        min-width: 120px;
    }

    .nav-brand h2 {
        font-size: 1.2rem;
        flex-direction: column;
        gap: 0.2rem;
        text-align: center;
        line-height: 1.2;
    }
    
    .animated-text {
        height: 1.2em;
        line-height: 1.2;
    }

    .skills-categories {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .skill-category .skills {
        gap: 0.8rem;
    }
    
    .skill-category .skill-item {
        min-width: 60px;
        padding: 0.6rem;
    }
}

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

    .navbar {
        padding: 1rem;
    }

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

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

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