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

:root {
    --primary-color: #2563eb;
    --secondary-color: #1e40af;
    --text-dark: #1f2937;
    --text-light: #6b7280;
    --bg-light: #f9fafb;
    --bg-white: #ffffff;
    --border-color: #e5e7eb;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    padding: 2rem 1rem;
}

.container {
    max-width: 1000px;
    margin: 0 auto;
    background: var(--bg-white);
    border-radius: 16px;
    box-shadow: var(--shadow-lg);
    overflow: hidden;
    animation: fadeIn 0.5s ease-in;
}

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

/* Header */
.header {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
    padding: 3rem 2rem;
    position: relative;
}

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

.name {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    animation: slideDown 0.6s ease-out;
}

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

.tagline {
    font-size: 1.25rem;
    opacity: 0.9;
    margin-bottom: 1.5rem;
}

.contact-info {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 1.5rem;
    font-size: 0.95rem;
}

.contact-item {
    opacity: 0.95;
}

.print-btn {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    background: rgba(255, 255, 255, 0.2);
    color: white;
    border: 2px solid white;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    cursor: pointer;
    font-size: 1rem;
    font-weight: 600;
    transition: all 0.3s ease;
}

.print-btn:hover {
    background: white;
    color: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

/* Navigation Tabs */
.tabs {
    display: flex;
    background: var(--bg-light);
    border-bottom: 2px solid var(--border-color);
    overflow-x: auto;
}

.tab-btn {
    flex: 1;
    padding: 1rem 1.5rem;
    background: none;
    border: none;
    cursor: pointer;
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-light);
    transition: all 0.3s ease;
    position: relative;
}

.tab-btn:hover {
    background: rgba(37, 99, 235, 0.05);
    color: var(--primary-color);
}

.tab-btn.active {
    color: var(--primary-color);
}

.tab-btn.active::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--primary-color);
    animation: slideIn 0.3s ease-out;
}

@keyframes slideIn {
    from {
        transform: scaleX(0);
    }
    to {
        transform: scaleX(1);
    }
}

/* Content */
.content {
    padding: 2rem;
    min-height: 500px;
}

.section {
    display: none;
    animation: fadeInSection 0.4s ease-in;
}

.section.active {
    display: block;
}

@keyframes fadeInSection {
    from {
        opacity: 0;
        transform: translateX(-10px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.section-title {
    font-size: 2rem;
    color: var(--text-dark);
    margin-bottom: 1.5rem;
    padding-bottom: 0.75rem;
    border-bottom: 3px solid var(--primary-color);
    display: inline-block;
}

/* About Section */
.about-content {
    max-width: 900px;
}

.about-text {
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--text-light);
    margin-bottom: 1.5rem;
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 1.5rem;
    margin-top: 2.5rem;
    padding-top: 2rem;
    border-top: 2px solid var(--border-color);
}

.stat-item {
    text-align: center;
    padding: 1.5rem;
    background: var(--bg-light);
    border-radius: 12px;
    transition: all 0.3s ease;
}

.stat-item:hover {
    transform: translateY(-5px);
    background: var(--primary-color);
    box-shadow: var(--shadow-lg);
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
    transition: color 0.3s ease;
}

.stat-item:hover .stat-number {
    color: white;
}

.stat-label {
    font-size: 0.9rem;
    color: var(--text-light);
    font-weight: 600;
    transition: color 0.3s ease;
}

.stat-item:hover .stat-label {
    color: white;
}

/* Timeline */
.timeline {
    position: relative;
    padding-left: 2rem;
}

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

.timeline-item {
    position: relative;
    margin-bottom: 2rem;
    padding-left: 2rem;
}

.timeline-marker {
    position: absolute;
    left: -2rem;
    top: 0.5rem;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--primary-color);
    border: 3px solid var(--bg-white);
    box-shadow: 0 0 0 3px var(--border-color);
}

.timeline-content h3 {
    font-size: 1.25rem;
    color: var(--text-dark);
    margin-bottom: 0.25rem;
}

.company {
    color: var(--primary-color);
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.duration {
    color: var(--text-light);
    font-size: 0.9rem;
    margin-bottom: 0.75rem;
}

.timeline-content ul {
    list-style: none;
    padding-left: 0;
}

.timeline-content li {
    padding-left: 1.5rem;
    margin-bottom: 0.5rem;
    position: relative;
    color: var(--text-light);
}

.timeline-content li::before {
    content: '▹';
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: bold;
}

/* Skills */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.skill-category h3 {
    font-size: 1.1rem;
    color: var(--text-dark);
    margin-bottom: 1rem;
}

.skill-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.skill-tag {
    background: var(--bg-light);
    color: var(--text-dark);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 500;
    transition: all 0.3s ease;
    cursor: default;
}

.skill-tag:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

/* Education */
.education-item {
    background: var(--bg-light);
    padding: 1.5rem;
    border-radius: 12px;
    border-left: 4px solid var(--primary-color);
}

.education-item h3 {
    font-size: 1.25rem;
    color: var(--text-dark);
    margin-bottom: 0.5rem;
}

.institution {
    color: var(--primary-color);
    font-weight: 600;
    margin-bottom: 0.25rem;
}

/* Projects */
.cert-intro {
    margin-bottom: 2rem;
    padding: 1rem 1.5rem;
    background: var(--bg-light);
    border-left: 4px solid var(--primary-color);
    border-radius: 8px;
}

.cert-intro p {
    color: var(--text-light);
    font-size: 1.05rem;
    margin: 0;
}

.cert-category-title {
    font-size: 1.5rem;
    color: var(--text-dark);
    margin: 2.5rem 0 1.5rem 0;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--border-color);
    font-weight: 600;
}

.cert-category-title:first-of-type {
    margin-top: 1rem;
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
}

.cert-card {
    position: relative;
}

.cert-badge {
    font-size: 3rem;
    margin-bottom: 1rem;
    display: block;
    animation: floatSmooth 3s ease-in-out infinite;
}

@keyframes floatSmooth {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-12px);
    }
}

.cert-card:hover .cert-badge {
    animation: pulse 0.6s ease-in-out;
}

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

.project-card {
    background: var(--bg-light);
    padding: 1.5rem;
    border-radius: 12px;
    transition: all 0.3s ease;
    cursor: pointer;
}

.project-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    background: white;
    border: 2px solid var(--primary-color);
}

.project-card h3 {
    font-size: 1.2rem;
    color: var(--text-dark);
    margin-bottom: 0.75rem;
}

.project-card p {
    color: var(--text-light);
    margin-bottom: 1rem;
    line-height: 1.6;
}

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

.project-tech span {
    background: var(--primary-color);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: 12px;
    font-size: 0.85rem;
}

/* Footer */
.footer {
    background: var(--bg-light);
    padding: 1.5rem;
    text-align: center;
    color: var(--text-light);
    font-size: 0.9rem;
}

/* Recommendations/Highlights Section */
.recommendations-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

.highlight-card {
    background: linear-gradient(135deg, var(--bg-light) 0%, white 100%);
    padding: 2rem;
    border-radius: 12px;
    border-left: 4px solid var(--primary-color);
    transition: all 0.3s ease;
    cursor: default;
}

.highlight-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-left-width: 6px;
}

.highlight-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    display: inline-block;
    animation: bounce 2s ease-in-out infinite;
}

@keyframes bounce {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-10px);
    }
}

.highlight-card:hover .highlight-icon {
    animation: none;
    transform: scale(1.2);
}

.highlight-card h3 {
    font-size: 1.2rem;
    color: var(--text-dark);
    margin-bottom: 0.75rem;
}

.highlight-card p {
    color: var(--text-light);
    line-height: 1.6;
    font-size: 0.95rem;
}

/* Print Styles */
@media print {
    * {
        margin: 0;
        padding: 0;
    }

    body {
        background: white;
        padding: 0;
        margin: 0;
    }

    .container {
        box-shadow: none;
        border-radius: 0;
        max-width: 100%;
        margin: 0;
        padding: 0;
    }

    .print-btn {
        display: none;
    }

    .tabs {
        display: none;
    }

    .header {
        background: var(--text-dark);
        print-color-adjust: exact;
        -webkit-print-color-adjust: exact;
        padding: 0.75rem 1.5rem;
        page-break-after: avoid;
        margin: 0;
    }

    .name {
        font-size: 1.5rem;
        margin-bottom: 0.15rem;
        animation: none;
    }

    .tagline {
        font-size: 0.9rem;
        margin-bottom: 0.5rem;
    }

    .contact-info {
        font-size: 0.75rem;
        gap: 0.75rem;
        flex-wrap: wrap;
    }

    .content {
        padding: 0.5rem 1.5rem;
        margin: 0;
    }

    .section {
        display: block !important;
        page-break-inside: avoid;
        margin-bottom: 1rem;
        padding: 0;
    }

    .section:first-of-type {
        page-break-before: avoid;
    }

    .about-content {
        margin: 0;
        padding: 0;
    }

    .section-title {
        font-size: 1.3rem;
        margin-bottom: 0.75rem;
        margin-top: 0.5rem;
        page-break-after: avoid;
    }

    .about-text {
        font-size: 0.9rem;
        margin-bottom: 0.75rem;
    }

    .about-stats {
        page-break-inside: avoid;
        gap: 1rem;
        margin-top: 1rem;
        padding-top: 1rem;
    }

    .stat-item {
        padding: 0.75rem;
    }

    .stat-number {
        font-size: 1.5rem;
    }

    .stat-label {
        font-size: 0.75rem;
    }

    .timeline {
        padding-left: 1.5rem;
        margin: 0;
    }

    .timeline-item,
    .project-card,
    .education-item,
    .highlight-card {
        page-break-inside: avoid;
        margin-bottom: 0.75rem;
        padding: 1rem;
    }

    .timeline-item {
        padding-left: 1.5rem;
    }

    .cert-badge {
        animation: none;
        font-size: 2rem;
        margin-bottom: 0.5rem;
    }

    .cert-category-title {
        page-break-after: avoid;
        margin-top: 1rem;
        margin-bottom: 0.75rem;
        font-size: 1.2rem;
    }

    .cert-intro {
        margin-bottom: 1rem;
        padding: 0.75rem 1rem;
    }

    .projects-grid {
        gap: 1rem;
    }

    .project-card h3 {
        font-size: 1rem;
    }

    .project-card p {
        font-size: 0.85rem;
    }

    .footer {
        padding: 0.75rem;
        font-size: 0.8rem;
    }
}

/* Responsive */
@media (max-width: 768px) {
    body {
        padding: 1rem 0.5rem;
    }

    .name {
        font-size: 2rem;
    }

    .contact-info {
        flex-direction: column;
        gap: 0.5rem;
    }

    .print-btn {
        position: static;
        margin-top: 1rem;
        width: 100%;
    }

    .tabs {
        flex-wrap: nowrap;
    }

    .tab-btn {
        font-size: 0.9rem;
        padding: 0.75rem 1rem;
    }

    .content {
        padding: 1.5rem 1rem;
    }

    .section-title {
        font-size: 1.5rem;
    }
}