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

:root {
    --primary-color: #2c3e50;
    --secondary-color: #3498db;
    --accent-color: #1abc9c;
    --text-color: #000;
    --text-light: #444;
    --bg-color: #f5f6fa;
    --sidebar-bg: #2c3e50;
    --white: #fff;
    --shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    min-height: 100vh;
    -webkit-tap-highlight-color: transparent;
}

.container {
    display: flex;
    max-width: 1200px;
    margin: 0 auto;
    background: var(--white);
    box-shadow: var(--shadow);
    min-height: 100vh;
}

.sidebar {
    width: 300px;
    background: linear-gradient(180deg, var(--sidebar-bg) 0%, #1a252f 100%);
    color: var(--white);
    padding: 30px 25px;
    position: sticky;
    top: 0;
    height: 100vh;
    overflow-y: auto;
}

.profile {
    text-align: center;
    margin-bottom: 30px;
}

.avatar {
    width: 120px;
    height: 160px;
    border-radius: 8px;
    background: linear-gradient(135deg, var(--secondary-color), var(--accent-color));
    margin: 0 auto 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 4px solid rgba(255, 255, 255, 0.2);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
    overflow: hidden;
}

.avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.avatar i {
    font-size: 50px;
    color: var(--white);
}

.name {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 6px;
    letter-spacing: 2px;
}

.title {
    font-size: 14px;
    color: var(--accent-color);
    font-weight: 400;
    margin-bottom: 4px;
}

.salary {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.7);
    margin-top: 5px;
}

.section-title {
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 15px;
    padding-bottom: 8px;
    border-bottom: 2px solid var(--accent-color);
    display: flex;
    align-items: center;
    gap: 8px;
}

.contact-info {
    margin-bottom: 25px;
}

.contact-info ul {
    list-style: none;
}

.contact-info li {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    font-size: 13px;
}

.contact-info li:last-child {
    border-bottom: none;
}

.contact-info i {
    width: 18px;
    color: var(--accent-color);
    font-size: 13px;
    flex-shrink: 0;
}

.contact-info a {
    color: var(--white);
    text-decoration: none;
    word-break: break-all;
}

.contact-info a:hover {
    color: var(--accent-color);
}

.contact-info span {
    word-break: break-all;
}

.skills {
    margin-bottom: 25px;
}

.skill-item {
    margin-bottom: 14px;
}

.skill-name {
    display: block;
    font-size: 12px;
    margin-bottom: 6px;
    color: rgba(255, 255, 255, 0.9);
}

.skill-bar {
    height: 5px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 3px;
    overflow: hidden;
}

.skill-progress {
    height: 100%;
    background: linear-gradient(90deg, var(--secondary-color), var(--accent-color));
    border-radius: 3px;
    transition: width 1s ease-out;
    width: 0;
}

.certificates-sidebar {
    margin-bottom: 20px;
}

.cert-list {
    list-style: none;
}

.cert-list li {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 6px 0;
    font-size: 12px;
    color: rgba(255, 255, 255, 0.85);
}

.cert-list i {
    color: var(--accent-color);
    font-size: 12px;
}

.main-content {
    flex: 1;
    padding: 30px 40px;
}

.main-content .section-title {
    color: var(--primary-color);
    border-bottom-color: var(--secondary-color);
    font-size: 18px;
    margin-bottom: 20px;
}

.main-content .section-title i {
    color: var(--secondary-color);
}

.about {
    margin-bottom: 30px;
}

.about-text {
    color: var(--text-light);
    font-size: 14px;
    line-height: 1.8;
    text-align: justify;
}

.education {
    margin-bottom: 30px;
}

.education-item {
    padding-left: 15px;
    border-left: 3px solid var(--accent-color);
}

.education-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 10px;
    flex-wrap: wrap;
    gap: 8px;
}

.school {
    font-size: 16px;
    color: var(--primary-color);
    margin-bottom: 4px;
}

.major {
    color: var(--text-light);
    font-size: 13px;
}

.date {
    background: var(--secondary-color);
    color: var(--white);
    padding: 3px 10px;
    border-radius: 12px;
    font-size: 11px;
    white-space: nowrap;
}

.education-detail {
    margin-top: 10px;
}

.education-detail p {
    color: var(--text-light);
    font-size: 13px;
    margin-bottom: 5px;
    display: flex;
    align-items: flex-start;
    gap: 6px;
}

.education-detail i {
    color: var(--accent-color);
    margin-top: 3px;
    flex-shrink: 0;
}

.education-detail .courses {
    display: block;
}

.projects {
    margin-bottom: 30px;
}

.project-item {
    background: var(--bg-color);
    padding: 20px;
    border-radius: 10px;
    margin-bottom: 15px;
}

.project-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 10px;
    flex-wrap: wrap;
    gap: 8px;
}

.project-name {
    font-size: 15px;
    color: var(--primary-color);
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 600;
}

.project-name i {
    color: var(--accent-color);
    font-size: 14px;
}

.project-desc {
    color: var(--text-light);
    font-size: 13px;
    line-height: 1.7;
    margin-bottom: 12px;
}

.project-list {
    list-style: none;
    padding-left: 0;
    margin-bottom: 12px;
}

.project-list li {
    position: relative;
    padding-left: 16px;
    margin-bottom: 8px;
    color: var(--text-light);
    font-size: 13px;
    line-height: 1.6;
}

.project-list li::before {
    content: '▸';
    position: absolute;
    left: 0;
    color: var(--accent-color);
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.tech-tag {
    background: var(--secondary-color);
    color: var(--white);
    padding: 3px 10px;
    border-radius: 12px;
    font-size: 11px;
}

.skill-detail {
    margin-bottom: 30px;
}

.skill-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
}

.skill-card {
    background: var(--bg-color);
    padding: 20px;
    border-radius: 10px;
    text-align: center;
    transition: transform 0.3s ease;
}

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

.skill-icon {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--secondary-color), var(--accent-color));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 12px;
}

.skill-icon i {
    font-size: 22px;
    color: var(--white);
}

.skill-card h4 {
    font-size: 14px;
    color: var(--primary-color);
    margin-bottom: 8px;
}

.skill-card p {
    font-size: 12px;
    color: var(--text-light);
    line-height: 1.5;
}

.certificates {
    margin-bottom: 30px;
}

.certificate-list {
    list-style: none;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 12px;
}

.certificate-list li {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 15px;
    background: var(--bg-color);
    border-radius: 8px;
    font-size: 13px;
    color: var(--text-color);
}

.certificate-list i {
    color: var(--accent-color);
    font-size: 16px;
}

.actions {
    position: fixed;
    bottom: 20px;
    right: 20px;
    display: flex;
    gap: 10px;
    z-index: 100;
}

.actions button {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 10px 20px;
    border: none;
    border-radius: 25px;
    cursor: pointer;
    font-size: 13px;
    font-weight: 500;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.btn-contact {
    background: var(--accent-color);
    color: var(--white);
    text-decoration: none;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 10px 20px;
    border-radius: 25px;
    font-size: 13px;
    font-weight: 500;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.btn-contact:hover {
    background: #16a085;
    transform: translateY(-2px);
}

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

.btn-print:hover {
    background: #2980b9;
    transform: translateY(-2px);
}

@media (max-width: 768px) {
    .container {
        flex-direction: column;
    }
    .sidebar {
        width: 100%;
        height: auto;
        position: relative;
        padding: 25px 20px;
    }
    .avatar {
        width: 100px;
        height: 100px;
    }
    .avatar i {
        font-size: 40px;
    }
    .name {
        font-size: 22px;
    }
    .title {
        font-size: 13px;
    }
    .main-content {
        padding: 20px 15px;
    }
    .main-content .section-title {
        font-size: 16px;
        margin-bottom: 15px;
    }
    .about-text {
        font-size: 13px;
    }
    .education-header,
    .project-header {
        flex-direction: column;
        gap: 5px;
    }
    .date {
        align-self: flex-start;
    }
    .skill-grid {
        grid-template-columns: 1fr;
        gap: 12px;
    }
    .skill-card {
        padding: 15px;
    }
    .skill-card h4 {
        font-size: 13px;
    }
    .project-item {
        padding: 15px;
    }
    .project-name {
        font-size: 14px;
    }
    .project-list li {
        font-size: 12px;
    }
    .certificate-list {
        grid-template-columns: 1fr;
    }
    .actions {
        bottom: 15px;
        right: 15px;
        left: 15px;
        justify-content: center;
    }
    .actions button {
        flex: 1;
        max-width: 150px;
        padding: 10px 15px;
        font-size: 12px;
    }
}

@media (max-width: 480px) {
    .sidebar {
        padding: 20px 15px;
    }
    .avatar {
        width: 80px;
        height: 80px;
    }
    .avatar i {
        font-size: 35px;
    }
    .name {
        font-size: 20px;
    }
    .contact-info li {
        font-size: 12px;
    }
    .skill-name {
        font-size: 11px;
    }
    .main-content {
        padding: 15px 12px;
    }
    .main-content .section-title {
        font-size: 15px;
    }
    .school {
        font-size: 15px;
    }
    .education-detail p {
        font-size: 12px;
    }
    .project-item {
        padding: 12px;
    }
    .project-name {
        font-size: 13px;
    }
    .project-desc {
        font-size: 12px;
    }
    .project-list li {
        font-size: 11px;
        padding-left: 14px;
    }
    .tech-tag {
        font-size: 10px;
        padding: 2px 8px;
    }
    .certificate-list li {
        font-size: 12px;
        padding: 10px 12px;
    }
}

@media print {
    body {
        background: var(--white);
    }
    .container {
        box-shadow: none;
        max-width: 100%;
    }
    .sidebar {
        background: var(--sidebar-bg) !important;
        -webkit-print-color-adjust: exact;
        print-color-adjust: exact;
    }
    .actions {
        display: none !important;
    }
    .skill-progress {
        width: var(--progress) !important;
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.main-content section {
    animation: fadeInUp 0.6s ease-out;
}

.main-content section:nth-child(2) {
    animation-delay: 0.1s;
}

.main-content section:nth-child(3) {
    animation-delay: 0.2s;
}

.main-content section:nth-child(4) {
    animation-delay: 0.3s;
}

.main-content section:nth-child(5) {
    animation-delay: 0.4s;
}