/* ===== CSS Variables & Reset ===== */
:root {
    --primary: #2D3436;
    --primary-light: #636E72;
    --accent: #6C5CE7;
    --accent-light: #A29BFE;
    --accent-dark: #5A4BD1;
    --bg-primary: #FFFFFF;
    --bg-secondary: #F8F9FA;
    --bg-tertiary: #F1F2F6;
    --text-primary: #2D3436;
    --text-secondary: #636E72;
    --text-light: #B2BEC3;
    --border: #E0E0E0;
    --success: #00B894;
    --warning: #FDCB6E;
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
    --shadow-lg: 0 8px 30px rgba(0,0,0,0.12);
    --shadow-xl: 0 20px 60px rgba(0,0,0,0.15);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 30px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
    color: var(--text-primary);
    background: var(--bg-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ===== Typography ===== */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.3;
}

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

button {
    cursor: pointer;
    border: none;
    outline: none;
    font-family: inherit;
}

/* ===== Layout ===== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.section {
    padding: 6rem 0;
}

.section-title {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.section-subtitle {
    text-align: center;
    color: var(--text-secondary);
    font-size: 1.1rem;
    margin-bottom: 4rem;
}

.section-title-left {
    font-size: 2rem;
    margin-bottom: 2rem;
    color: var(--text-primary);
}

/* ===== Navigation ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
    z-index: 1000;
    transition: var(--transition);
}

.navbar.scrolled {
    box-shadow: var(--shadow-md);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--accent);
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--accent) 0%, var(--accent-light) 100%);
    color: white;
    border-radius: var(--radius-sm);
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2.5rem;
}

.nav-links a {
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.95rem;
    position: relative;
    padding: 0.5rem 0;
}

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

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

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

.nav-download {
    padding: 0.7rem 1.5rem;
    background: var(--accent);
    color: white;
    border-radius: var(--radius-xl);
    font-weight: 600;
    font-size: 0.9rem;
    transition: var(--transition);
}

.nav-download:hover {
    background: var(--accent-dark);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(108, 92, 231, 0.4);
}

/* ===== Hero Section ===== */
.hero-section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 80px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    position: relative;
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 50%, rgba(255, 255, 255, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 50%, rgba(255, 255, 255, 0.05) 0%, transparent 50%);
}

.hero-content {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 4rem;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-text {
    color: white;
}

.hero-greeting {
    font-size: 1.2rem;
    margin-bottom: 1rem;
    opacity: 0.9;
    animation: fadeInUp 0.6s ease-out;
}

.hero-name {
    font-size: 4rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    animation: fadeInUp 0.6s ease-out 0.1s both;
}

.hero-title {
    font-size: 2rem;
    font-weight: 400;
    margin-bottom: 2rem;
    opacity: 0.95;
    animation: fadeInUp 0.6s ease-out 0.2s both;
}

.hero-description {
    font-size: 1.1rem;
    line-height: 1.8;
    margin-bottom: 2rem;
    opacity: 0.9;
    animation: fadeInUp 0.6s ease-out 0.3s both;
}

.hero-stats {
    display: flex;
    gap: 3rem;
    margin-bottom: 3rem;
    animation: fadeInUp 0.6s ease-out 0.4s both;
}

.stat-item {
    display: flex;
    flex-direction: column;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: white;
}

.stat-label {
    font-size: 0.9rem;
    opacity: 0.8;
    margin-top: 0.3rem;
}

.hero-cta {
    display: flex;
    gap: 1.5rem;
    animation: fadeInUp 0.6s ease-out 0.5s both;
}

.btn-primary {
    padding: 1rem 2.5rem;
    background: white;
    color: var(--accent);
    border-radius: var(--radius-xl);
    font-weight: 600;
    font-size: 1rem;
    transition: var(--transition);
    display: inline-block;
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.btn-secondary {
    padding: 1rem 2.5rem;
    background: transparent;
    color: white;
    border: 2px solid white;
    border-radius: var(--radius-xl);
    font-weight: 600;
    font-size: 1rem;
    transition: var(--transition);
    display: inline-block;
}

.btn-secondary:hover {
    background: white;
    color: var(--accent);
    transform: translateY(-3px);
}

/* Hero Image */
.hero-image {
    position: relative;
    animation: fadeInRight 0.8s ease-out 0.3s both;
}

.profile-frame {
    width: 350px;
    height: 350px;
    margin: 0 auto;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    border: 4px solid rgba(255, 255, 255, 0.3);
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

.profile-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.2) 0%, rgba(255, 255, 255, 0.1) 100%);
}

.profile-placeholder svg {
    width: 200px;
    height: 200px;
    opacity: 0.6;
}

.floating-badge {
    position: absolute;
    padding: 0.6rem 1.2rem;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-radius: var(--radius-xl);
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--accent);
    box-shadow: var(--shadow-md);
    animation: float 3s ease-in-out infinite;
}

.badge-1 {
    top: 20%;
    left: 0;
    animation-delay: 0s;
}

.badge-2 {
    top: 50%;
    right: 0;
    animation-delay: 1s;
}

.badge-3 {
    bottom: 20%;
    left: 10%;
    animation-delay: 2s;
}

/* ===== Experience Section ===== */
.experience-section {
    background: var(--bg-secondary);
}

.timeline {
    position: relative;
    padding: 2rem 0;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    width: 2px;
    height: 100%;
    background: linear-gradient(180deg, var(--accent) 0%, var(--accent-light) 100%);
}

.timeline-item {
    display: flex;
    align-items: center;
    margin-bottom: 4rem;
    position: relative;
}

.timeline-item:nth-child(odd) {
    flex-direction: row;
}

.timeline-item:nth-child(even) {
    flex-direction: row-reverse;
}

.timeline-marker {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    z-index: 10;
}

.timeline-year {
    background: var(--accent);
    color: white;
    padding: 0.5rem 1.2rem;
    border-radius: var(--radius-xl);
    font-size: 0.85rem;
    font-weight: 600;
    white-space: nowrap;
    box-shadow: 0 4px 12px rgba(108, 92, 231, 0.3);
}

.timeline-content {
    background: white;
    padding: 2rem;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    width: 45%;
    transition: var(--transition);
}

.timeline-item:nth-child(odd) .timeline-content {
    margin-right: auto;
}

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

.timeline-content:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.job-header {
    margin-bottom: 1rem;
}

.job-title {
    font-size: 1.4rem;
    color: var(--text-primary);
    margin-bottom: 0.3rem;
}

.job-company {
    color: var(--accent);
    font-weight: 500;
    font-size: 1rem;
}

.job-description {
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 1rem;
}

.job-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.tag {
    padding: 0.3rem 0.8rem;
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    border-radius: var(--radius-xl);
    font-size: 0.85rem;
    font-weight: 500;
}

/* ===== Skills Section ===== */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 3rem;
}

.skill-category {
    background: white;
    padding: 2rem;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.skill-category:hover {
    box-shadow: var(--shadow-md);
}

.category-title {
    font-size: 1.3rem;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
}

.skill-items {
    display: flex;
    flex-direction: column;
    gap: 1.2rem;
}

.skill-item {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.skill-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.skill-name {
    font-weight: 500;
    color: var(--text-primary);
    font-size: 0.95rem;
}

.skill-level {
    font-size: 0.8rem;
    color: var(--accent);
    font-weight: 600;
    padding: 0.2rem 0.6rem;
    background: rgba(108, 92, 231, 0.1);
    border-radius: var(--radius-xl);
}

.skill-bar {
    height: 8px;
    background: var(--bg-tertiary);
    border-radius: 10px;
    overflow: hidden;
}

.skill-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--accent) 0%, var(--accent-light) 100%);
    border-radius: 10px;
    width: 0;
    transition: width 1s ease-out;
}

/* Soft Skills */
.soft-skills {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
}

.soft-skill-item {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    padding: 0.8rem;
    background: var(--bg-secondary);
    border-radius: var(--radius-sm);
    transition: var(--transition);
}

.soft-skill-item:hover {
    background: var(--bg-tertiary);
    transform: translateX(5px);
}

.soft-skill-icon {
    font-size: 1.5rem;
}

.soft-skill-text {
    font-weight: 500;
    color: var(--text-primary);
    font-size: 0.95rem;
}

/* ===== Portfolio Section ===== */
.portfolio-section {
    background: var(--bg-secondary);
}

.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
}

.portfolio-item {
    background: white;
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.portfolio-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.portfolio-item.featured {
    grid-column: 1 / -1;
    display: grid;
    grid-template-columns: 1.5fr 1fr;
}

.portfolio-image {
    aspect-ratio: 16 / 9;
    overflow: hidden;
}

.portfolio-item.featured .portfolio-image {
    aspect-ratio: auto;
}

.portfolio-placeholder {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--accent) 0%, var(--accent-light) 100%);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    color: white;
    min-height: 200px;
}

.placeholder-icon {
    font-size: 3rem;
}

.placeholder-text {
    font-size: 1.2rem;
    font-weight: 600;
}

.portfolio-info {
    padding: 1.5rem;
}

.portfolio-title {
    font-size: 1.3rem;
    margin-bottom: 0.8rem;
    color: var(--text-primary);
}

.portfolio-description {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.6;
    margin-bottom: 1rem;
}

.portfolio-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.portfolio-tag {
    padding: 0.3rem 0.8rem;
    background: rgba(108, 92, 231, 0.1);
    color: var(--accent);
    border-radius: var(--radius-xl);
    font-size: 0.8rem;
    font-weight: 500;
}

.portfolio-metrics {
    display: flex;
    gap: 2rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border);
}

.metric {
    display: flex;
    flex-direction: column;
}

.metric-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--success);
}

.metric-label {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

/* ===== Education & Awards ===== */
.edu-awards-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
}

.education-item {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.edu-icon {
    font-size: 2.5rem;
    flex-shrink: 0;
}

.edu-school {
    font-size: 1.3rem;
    margin-bottom: 0.3rem;
    color: var(--text-primary);
}

.edu-degree {
    color: var(--accent);
    font-weight: 500;
    margin-bottom: 0.3rem;
}

.edu-year {
    color: var(--text-light);
    font-size: 0.9rem;
    margin-bottom: 0.8rem;
}

.edu-description {
    color: var(--text-secondary);
    line-height: 1.6;
    font-size: 0.95rem;
}

.awards-list {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.award-item {
    display: flex;
    gap: 1.2rem;
    padding: 1.2rem;
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    transition: var(--transition);
}

.award-item:hover {
    background: var(--bg-tertiary);
    transform: translateX(5px);
}

.award-icon {
    font-size: 2rem;
    flex-shrink: 0;
}

.award-name {
    font-size: 1.1rem;
    margin-bottom: 0.3rem;
    color: var(--text-primary);
}

.award-org {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* ===== Contact Section ===== */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 4rem;
    margin-top: 3rem;
}

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

.contact-item {
    display: flex;
    gap: 1.2rem;
    padding: 1.2rem;
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    transition: var(--transition);
}

.contact-item:hover {
    background: var(--bg-tertiary);
    transform: translateX(5px);
}

.contact-icon {
    font-size: 2rem;
    flex-shrink: 0;
}

.contact-details h3 {
    font-size: 0.9rem;
    color: var(--text-light);
    margin-bottom: 0.3rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.contact-details a,
.contact-details p {
    color: var(--text-primary);
    font-weight: 500;
}

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

/* Contact Form */
.contact-form-wrapper {
    background: white;
    padding: 2.5rem;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
}

.form-title {
    font-size: 1.5rem;
    margin-bottom: 2rem;
    color: var(--text-primary);
}

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

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.9rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.9rem 1.2rem;
    border: 2px solid var(--border);
    border-radius: var(--radius-sm);
    font-family: inherit;
    font-size: 0.95rem;
    transition: var(--transition);
    background: var(--bg-secondary);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent);
    background: white;
    box-shadow: 0 0 0 3px rgba(108, 92, 231, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.btn-submit {
    width: 100%;
    padding: 1rem;
    background: linear-gradient(135deg, var(--accent) 0%, var(--accent-light) 100%);
    color: white;
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: 1rem;
    transition: var(--transition);
}

.btn-submit:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(108, 92, 231, 0.4);
}

/* ===== Footer ===== */
.footer {
    background: var(--text-primary);
    color: white;
    padding: 3rem 0;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-logo {
    font-size: 2rem;
    font-weight: 700;
    color: var(--accent-light);
    margin-bottom: 0.5rem;
}

.footer-tagline {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.95rem;
}

.footer-right {
    text-align: right;
}

.footer-right p {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.9rem;
    margin-bottom: 0.3rem;
}

.footer-made {
    font-size: 0.85rem !important;
    color: rgba(255, 255, 255, 0.5) !important;
}

/* ===== Back to Top ===== */
.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 50px;
    height: 50px;
    background: var(--accent);
    color: white;
    border-radius: 50%;
    font-size: 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-md);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 999;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background: var(--accent-dark);
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

/* ===== Animations ===== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

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

/* ===== Responsive Design ===== */
@media (max-width: 968px) {
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-name {
        font-size: 3rem;
    }
    
    .hero-stats {
        justify-content: center;
    }
    
    .hero-cta {
        justify-content: center;
    }
    
    .hero-image {
        order: -1;
    }
    
    .profile-frame {
        width: 250px;
        height: 250px;
    }
    
    .timeline::before {
        left: 0;
    }
    
    .timeline-item {
        flex-direction: column !important;
        padding-left: 3rem;
    }
    
    .timeline-marker {
        left: 0;
        transform: translateX(-50%);
    }
    
    .timeline-content {
        width: 100% !important;
        margin: 1rem 0 0 0 !important;
    }
    
    .skills-grid {
        grid-template-columns: 1fr;
    }
    
    .portfolio-grid {
        grid-template-columns: 1fr;
    }
    
    .portfolio-item.featured {
        grid-column: 1;
        display: block;
    }
    
    .edu-awards-grid {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    
    .nav-links {
        display: none;
    }
}

@media (max-width: 640px) {
    .section {
        padding: 4rem 0;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .hero-name {
        font-size: 2.5rem;
    }
    
    .hero-title {
        font-size: 1.5rem;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: 1.5rem;
    }
    
    .stat-number {
        font-size: 2rem;
    }
    
    .soft-skills {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        flex-direction: column;
        text-align: center;
        gap: 1.5rem;
    }
    
    .footer-right {
        text-align: center;
    }
}

/* ===== Print Styles ===== */
@media print {
    .navbar,
    .back-to-top,
    .contact-form-wrapper,
    .hero-cta,
    .floating-badge {
        display: none !important;
    }
    
    .hero-section {
        min-height: auto;
        padding: 2rem;
        background: white !important;
        color: black !important;
    }
    
    .section {
        padding: 2rem 0;
    }
    
    body {
        color: black;
    }
    
    .timeline-content,
    .skill-category,
    .portfolio-item,
    .contact-item {
        box-shadow: none;
        border: 1px solid #e0e0e0;
    }
}