* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

:root {
    --primary-color: #2563eb;
    --secondary-color: #1e40af;
    --dark-color: #1e293b;
    --light-color: #f8fafc;
    --gray-color: #64748b;
    --border-color: #e2e8f0;
    --success-color: #10b981;
}

body {
    background-color: #f1f5f9;
    color: #334155;
    line-height: 1.6;
    position: relative;
    overflow-x: hidden;
}

/* TubesCursor Canvas Background */
#canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    pointer-events: none;
}

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

/* Header & Navigation */
header {
    background-color: white;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 18px 0;
}

.logo {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--dark-color);
    text-decoration: none;
}

.logo span {
    color: var(--primary-color);
}

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

.nav-links li {
    margin-left: 30px;
}

.nav-links a {
    text-decoration: none;
    color: var(--dark-color);
    font-weight: 500;
    transition: color 0.3s;
    font-size: 1rem;
}

.nav-links a:hover {
    color: var(--primary-color);
}

.hamburger {
    display: none;
    cursor: pointer;
    font-size: 1.5rem;
    color: var(--dark-color);
}

/* Hero Section */
.hero {
    padding: 150px 0 80px;
    background: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 100%);
    text-align: center;
}

.hero-content {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 40px;
    flex-wrap: wrap;
}

.profile-image {
    flex-shrink: 0;
}

.profile-image img {
    width: 200px;
    height: 200px;
    border-radius: 50%;
    object-fit: cover;
    border: 5px solid rgba(255, 255, 255, 0.8);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    transition: transform 0.3s ease;
}

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

.hero-text {
    max-width: 600px;
    text-align: left;
}

.hero h1 {
    font-size: 3.2rem;
    font-weight: 800;
    color: var(--dark-color);
    margin-bottom: 10px;
    line-height: 1.2;
}

.hero p {
    font-size: 1.5rem;
    color: var(--gray-color);
    margin-bottom: 15px;
    line-height: 1.4;
}

.hero p:last-child {
    margin-bottom: 0;
}

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

/* Main Content Layout */
.main-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 40px;
    margin-top: 40px;
    padding-bottom: 60px;
}

/* Left Sidebar */
.sidebar {
    background-color: white;
    border-radius: 10px;
    padding: 30px;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    height: fit-content;
}

.section-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--dark-color);
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--border-color);
}

.about-info p {
    margin-bottom: 25px;
    color: var(--gray-color);
    font-size: 1rem;
}

.info-item {
    margin-bottom: 15px;
    display: flex;
    align-items: center;
}

.info-item i {
    width: 24px;
    color: var(--primary-color);
    margin-right: 10px;
}

/* Skills Section */
.skills-container {
    margin-top: 25px;
}

.skill-item {
    margin-bottom: 25px;
}

.skill-header {
    display: flex;
    justify-content: space-between;
    margin-bottom: 8px;
}

.skill-name {
    font-weight: 600;
    color: var(--dark-color);
}

.skill-percent {
    font-weight: 600;
    color: var(--primary-color);
}

.skill-bar {
    height: 10px;
    background-color: #e2e8f0;
    border-radius: 5px;
    overflow: hidden;
}

.skill-progress {
    height: 100%;
    background-color: var(--primary-color);
    border-radius: 5px;
}

.skill-description {
    margin-top: 8px;
    font-size: 0.9rem;
    color: var(--text-color);
    line-height: 1.4;
}

.skill-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 20px;
}

.skill-tag {
    background-color: #e0f2fe;
    color: var(--primary-color);
    padding: 8px 15px;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 500;
}

/* Right Content */
.content {
    background-color: white;
    border-radius: 10px;
    padding: 30px;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

/* Projects Section */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 20px;
}

.project-card {
    border: 1px solid var(--border-color);
    border-radius: 10px;
    overflow: hidden;
    transition: transform 0.3s, box-shadow 0.3s;
}

.project-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
}

.project-content {
    padding: 25px;
}

.project-title {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--dark-color);
    margin-bottom: 10px;
}

.project-description {
    color: var(--gray-color);
    margin-bottom: 20px;
    font-size: 0.95rem;
}

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

.project-tag {
    background-color: #f1f5f9;
    color: var(--dark-color);
    padding: 6px 12px;
    border-radius: 5px;
    font-size: 0.8rem;
    font-weight: 500;
}

/* Experience & Education */
.timeline {
    margin-top: 25px;
}

.timeline-item {
    padding: 20px 0;
    border-bottom: 1px solid var(--border-color);
}

.timeline-item:last-child {
    border-bottom: none;
}

.timeline-period {
    display: inline-block;
    background-color: #dbeafe;
    color: var(--primary-color);
    padding: 5px 12px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 10px;
}

.timeline-title {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--dark-color);
    margin-bottom: 5px;
}

.timeline-subtitle {
    color: var(--gray-color);
    font-size: 1rem;
    margin-bottom: 10px;
}

/* Achievements */
.achievements-list {
    margin-top: 25px;
}

.achievement-item {
    display: flex;
    align-items: flex-start;
    margin-bottom: 20px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--border-color);
}

.achievement-item:last-child {
    border-bottom: none;
}

.achievement-icon {
    background-color: #d1fae5;
    color: var(--success-color);
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 15px;
    flex-shrink: 0;
}

.achievement-content h4 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--dark-color);
    margin-bottom: 5px;
}

.achievement-content p {
    color: var(--gray-color);
    font-size: 0.95rem;
}

/* Certifications */
.certifications-list {
    margin-top: 25px;
}

.certification-item {
    display: flex;
    align-items: flex-start;
    margin-bottom: 20px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--border-color);
}

.certification-item:last-child {
    border-bottom: none;
}

.certification-icon {
    background-color: #dbeafe;
    color: var(--primary-color);
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 15px;
    flex-shrink: 0;
}

.certification-content h4 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--dark-color);
    margin-bottom: 5px;
}

.certification-content .certification-issuer {
    color: var(--primary-color);
    font-weight: 600;
    font-size: 0.9rem;
    margin-bottom: 8px;
}

.certification-content p {
    color: var(--gray-color);
    font-size: 0.95rem;
}

/* Resume Section */
.resume-container {
    margin-top: 25px;
}

.resume-content {
    text-align: center;
    padding: 30px 20px;
    background-color: #f8fafc;
    border-radius: 10px;
    border: 2px dashed var(--border-color);
}

.resume-content p {
    color: var(--gray-color);
    margin-bottom: 25px;
    font-size: 1rem;
}

.resume-download-btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background-color: var(--primary-color);
    color: white;
    padding: 15px 30px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1rem;
    transition: all 0.3s ease;
    box-shadow: 0 4px 6px -1px rgba(37, 99, 235, 0.3);
}

.resume-download-btn:hover {
    background-color: var(--secondary-color);
    transform: translateY(-2px);
    box-shadow: 0 6px 12px -2px rgba(37, 99, 235, 0.4);
}

.resume-download-btn i {
    font-size: 1.1rem;
}

/* Footer */
footer {
    background-color: var(--dark-color);
    color: white;
    text-align: center;
    padding: 30px 0;
    margin-top: 40px;
}

.footer-content {
    max-width: 800px;
    margin: 0 auto;
}

.social-links {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-top: 20px;
}

.social-link {
    color: white;
    font-size: 1.2rem;
    transition: color 0.3s;
}

.social-link:hover {
    color: #60a5fa;
}

.copyright {
    margin-top: 20px;
    font-size: 0.9rem;
    color: #cbd5e1;
}

/* Responsive Styles */
@media (max-width: 992px) {
    .main-content {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .hero-content {
        flex-direction: column;
        text-align: center;
        gap: 30px;
    }

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

    .profile-image img {
        width: 180px;
        height: 180px;
    }

    .hero h1 {
        font-size: 2.8rem;
    }

    .hero p {
        font-size: 1.3rem;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background-color: white;
        flex-direction: column;
        padding: 20px;
        box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    }

    .nav-links.active {
        display: flex;
    }

    .nav-links li {
        margin: 10px 0;
    }

    .hamburger {
        display: block;
    }

    .hero {
        padding: 130px 0 60px;
    }

    .hero-content {
        gap: 25px;
    }

    .profile-image img {
        width: 160px;
        height: 160px;
    }

    .hero h1 {
        font-size: 2.4rem;
    }

    .hero p {
        font-size: 1.1rem;
    }

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

@media (max-width: 576px) {
    .hero h1 {
        font-size: 2rem;
    }

    .hero p {
        font-size: 1rem;
    }

    .profile-image img {
        width: 140px;
        height: 140px;
    }

    .sidebar, .content {
        padding: 20px;
    }
}