:root {
    --primary-color: #1a1a2e;
    --secondary-color: #16213e;
    --accent-color: #0f3460;
    --gold-color: #c9a961;
    --text-primary: #2d2d2d;
    --text-secondary: #5a5a5a;
    --text-light: #8a8a8a;
    --bg-color: #ffffff;
    --bg-secondary: #f8f9fa;
    --bg-gradient: linear-gradient(135deg, #f5f7fa 0%, #f8f9fa 100%);
    --border-color: #e5e5e5;
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.12);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Dark Theme */
body.dark-theme {
    --primary-color: #e8c882;
    --secondary-color: #d4b876;
    --accent-color: #c9a961;
    --gold-color: #e8c882;
    --text-primary: #e8e8e8;
    --text-secondary: #c4c4c4;
    --text-light: #9a9a9a;
    --bg-color: #0f1419;
    --bg-secondary: #1a1f2e;
    --bg-gradient: linear-gradient(135deg, #0a0d12 0%, #0f1419 100%);
    --border-color: #2a3040;
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.4);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.5);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.6);
}

body.dark-theme .header {
    background: linear-gradient(135deg, #1a1f2e 0%, #16213e 100%);
}

body.dark-theme .section {
    background: #1a1f2e;
    border-color: #2a3040;
}

body.dark-theme .timeline-item {
    background: #0f1419;
    border-left-color: #2a3040;
}

body.dark-theme .timeline-item:hover {
    background: #1a1f2e;
    border-left-color: var(--gold-color);
}

body.dark-theme .timeline-item.featured {
    background: linear-gradient(135deg, rgba(232, 200, 130, 0.08) 0%, rgba(232, 200, 130, 0.03) 100%);
    border-left-color: var(--gold-color);
}

body.dark-theme .timeline-item::before {
    border-color: #1a1f2e;
    background: var(--gold-color);
}

body.dark-theme .skill-category {
    background: #0f1419;
    border-color: #2a3040;
}

body.dark-theme .skill-category:hover {
    background: #1a1f2e;
}

body.dark-theme .skill-tag {
    background: #1a1f2e;
    color: var(--text-primary);
    border-color: #2a3040;
}

body.dark-theme .skill-tag:hover {
    background: var(--gold-color);
    color: #0f1419;
    border-color: var(--gold-color);
}

body.dark-theme .certification-item {
    background: #0f1419;
    border-color: #2a3040;
}

body.dark-theme .certification-item:hover {
    background: #1a1f2e;
}

body.dark-theme .item-title {
    color: var(--gold-color);
}

body.dark-theme .section-title {
    color: var(--gold-color);
}

body.dark-theme .item-details a {
    color: var(--gold-color);
}

body.dark-theme .item-details a:hover {
    color: #f0d89e;
    border-bottom-color: #f0d89e;
}

body.dark-theme .cert-link a {
    color: var(--gold-color);
}

body.dark-theme .cert-link a:hover {
    color: #f0d89e;
    border-bottom-color: #f0d89e;
}

body.dark-theme .item-date {
    background: rgba(232, 200, 130, 0.15);
    color: var(--gold-color);
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: 90px;
}

/* Prevent text selection and image copying */
body {
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
    -webkit-touch-callout: none;
}

/* Prevent image dragging */
img {
    -webkit-user-drag: none;
    -khtml-user-drag: none;
    -moz-user-drag: none;
    -o-user-drag: none;
    user-drag: none;
    pointer-events: none;
}

/* Allow clicking on interactive elements */
a, button, input, textarea {
    pointer-events: auto;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.7;
    color: var(--text-primary);
    background: var(--bg-gradient);
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    transition: background 0.3s ease, color 0.3s ease;
    padding-top: 80px;
}

/* Navigation Bar */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: var(--bg-color);
    border-bottom: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
    z-index: 1000;
    transition: var(--transition);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 700;
    color: var(--text-primary);
    text-decoration: none;
}

.nav-logo {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--gold-color) 0%, var(--accent-color) 100%);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.1rem;
    font-weight: 700;
    letter-spacing: 1px;
}

.nav-name {
    font-size: 1.25rem;
    font-family: 'Playfair Display', Georgia, serif;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 35px;
    margin: 0;
    padding: 0;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    transition: var(--transition);
    position: relative;
    padding: 5px 0;
}

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

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

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

.nav-link.active {
    color: var(--gold-color);
}

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

/* Theme Toggle Button */
.theme-toggle {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: 2px solid var(--border-color);
    background: var(--bg-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    position: relative;
}

.theme-toggle:hover {
    background: var(--gold-color);
    border-color: var(--gold-color);
    transform: rotate(15deg);
}

.theme-toggle svg {
    width: 20px;
    height: 20px;
    transition: var(--transition);
}

.sun-icon {
    color: var(--text-primary);
}

.moon-icon {
    color: var(--text-primary);
    display: none;
}

body.dark-theme .sun-icon {
    display: none;
}

body.dark-theme .moon-icon {
    display: block;
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.mobile-menu-toggle span {
    width: 25px;
    height: 3px;
    background: var(--text-primary);
    border-radius: 3px;
    transition: var(--transition);
}

.mobile-menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(8px, 8px);
}

.mobile-menu-toggle.active span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -7px);
}

.container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 40px 20px;
    animation: fadeIn 0.8s ease-out;
}

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

/* Header Section */
.header {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
    padding: 60px 50px;
    border-radius: 20px;
    margin-bottom: 40px;
    box-shadow: var(--shadow-lg);
    position: relative;
    overflow: hidden;
}

.header::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(201, 169, 97, 0.15) 0%, transparent 70%);
    border-radius: 50%;
    animation: float 6s ease-in-out infinite;
}

@keyframes float {
    0%, 100% {
        transform: translate(0, 0);
    }
    50% {
        transform: translate(-20px, -20px);
    }
}

.header-content {
    position: relative;
    z-index: 1;
}

.profile-section {
    display: flex;
    align-items: center;
    gap: 30px;
    margin-bottom: 30px;
}

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

.profile-image {
    width: 140px;
    height: 140px;
    border-radius: 50%;
    object-fit: cover;
    object-position: center top;
    border: 4px solid rgba(255, 255, 255, 0.3);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
    transition: var(--transition);
    background: white;
}

.profile-image:hover {
    transform: scale(1.05);
    border-color: var(--gold-color);
    box-shadow: 0 12px 40px rgba(201, 169, 97, 0.3);
}

.name-title {
    flex: 1;
}

.name {
    font-family: 'Playfair Display', Georgia, serif;
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 8px;
    letter-spacing: -0.5px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.1);
}

.title {
    font-size: 1.25rem;
    color: var(--gold-color);
    font-weight: 500;
    letter-spacing: 0.5px;
}

.tagline {
    font-size: 1.05rem;
    color: rgba(255, 255, 255, 0.85);
    font-weight: 400;
    line-height: 1.6;
    margin-top: 15px;
    margin-bottom: 20px;
    max-width: 650px;
    font-style: italic;
}

.header-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 20px;
}

.header-badge {
    background: rgba(255, 255, 255, 0.12);
    color: rgba(255, 255, 255, 0.95);
    padding: 8px 18px;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 500;
    border: 1px solid rgba(201, 169, 97, 0.3);
    transition: var(--transition);
    backdrop-filter: blur(10px);
}

.header-badge:hover {
    background: rgba(201, 169, 97, 0.2);
    border-color: var(--gold-color);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(201, 169, 97, 0.2);
}

.contact-info {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 10px;
    color: rgba(255, 255, 255, 0.9);
    text-decoration: none;
    font-size: 0.95rem;
    padding: 10px 16px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    backdrop-filter: blur(10px);
    transition: var(--transition);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.contact-item:hover {
    background: rgba(255, 255, 255, 0.15);
    transform: translateY(-2px);
    border-color: var(--gold-color);
}

.contact-item svg {
    width: 18px;
    height: 18px;
    color: var(--gold-color);
}

/* Section Styles */
.section {
    background: var(--bg-color);
    border-radius: 16px;
    padding: 45px 50px;
    margin-bottom: 30px;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    border: 1px solid var(--border-color);
}

.section:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}

.section-title {
    font-family: 'Playfair Display', Georgia, serif;
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 30px;
    padding-bottom: 15px;
    border-bottom: 3px solid var(--gold-color);
    display: inline-block;
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -3px;
    left: 0;
    width: 50%;
    height: 3px;
    background: var(--accent-color);
}

.section-content {
    color: var(--text-secondary);
}

/* Summary Section */
.summary-text {
    font-size: 1.1rem;
    line-height: 1.9;
    color: var(--text-secondary);
    text-align: justify;
}

/* Timeline Items */
.timeline-item {
    margin-bottom: 35px;
    padding: 25px;
    border-left: 3px solid var(--border-color);
    border-radius: 8px;
    background: var(--bg-secondary);
    transition: var(--transition);
    position: relative;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: -8px;
    top: 30px;
    width: 13px;
    height: 13px;
    background: var(--gold-color);
    border-radius: 50%;
    border: 3px solid var(--bg-color);
}

.timeline-item:hover {
    border-left-color: var(--gold-color);
    background: white;
    box-shadow: var(--shadow-sm);
    transform: translateX(5px);
}

.timeline-item.featured {
    border-left-color: var(--gold-color);
    background: linear-gradient(135deg, rgba(201, 169, 97, 0.05) 0%, rgba(201, 169, 97, 0.02) 100%);
}

.timeline-item:last-child {
    margin-bottom: 0;
}

.timeline-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 15px;
    gap: 20px;
}

.item-title {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 5px;
}

.item-subtitle {
    font-size: 0.95rem;
    color: var(--text-light);
    margin-bottom: 4px;
}

.item-description {
    font-size: 1rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.item-date {
    font-size: 0.9rem;
    color: var(--gold-color);
    font-weight: 600;
    white-space: nowrap;
    background: rgba(201, 169, 97, 0.1);
    padding: 6px 14px;
    border-radius: 20px;
    letter-spacing: 0.3px;
}

.item-details {
    list-style: none;
    padding-left: 0;
}

.item-details li {
    padding: 8px 0 8px 25px;
    position: relative;
    color: var(--text-secondary);
    line-height: 1.7;
}

.item-details li::before {
    content: '▹';
    position: absolute;
    left: 0;
    color: var(--gold-color);
    font-weight: bold;
    font-size: 1.3rem;
}

.item-details a {
    color: var(--accent-color);
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
    border-bottom: 1px solid transparent;
}

.item-details a:hover {
    color: var(--gold-color);
    border-bottom-color: var(--gold-color);
}

/* Skills Section */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 25px;
    margin-bottom: 40px;
}

.skill-category {
    background: var(--bg-secondary);
    padding: 20px;
    border-radius: 12px;
    transition: var(--transition);
    border: 1px solid var(--border-color);
}

.skill-category:hover {
    background: white;
    box-shadow: var(--shadow-sm);
    transform: translateY(-3px);
}

.skill-category-title {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 15px;
    display: flex;
    align-items: center;
}

.skill-category-title::before {
    content: '';
    width: 4px;
    height: 20px;
    background: var(--gold-color);
    margin-right: 10px;
    border-radius: 2px;
}

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

.skill-tag {
    background: white;
    color: var(--text-secondary);
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 500;
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

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

/* Certifications */
.certifications {
    border-top: 2px solid var(--border-color);
    padding-top: 30px;
}

.certification-list {
    display: grid;
    gap: 20px;
}

.certification-item {
    display: flex;
    align-items: center;
    gap: 20px;
    padding: 20px;
    background: var(--bg-secondary);
    border-radius: 12px;
    transition: var(--transition);
    border: 1px solid var(--border-color);
}

.certification-item:hover {
    background: white;
    box-shadow: var(--shadow-sm);
    transform: translateX(5px);
}

.cert-icon {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--gold-color) 0%, var(--accent-color) 100%);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.cert-icon svg {
    width: 28px;
    height: 28px;
    color: white;
}

.cert-details {
    flex: 1;
}

.cert-name {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 4px;
}

.cert-issuer {
    font-size: 0.9rem;
    color: var(--text-light);
}

.cert-link {
    margin-top: 8px;
    font-size: 0.9rem;
}

.cert-link a {
    color: var(--accent-color);
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
    border-bottom: 1px solid transparent;
}

.cert-link a:hover {
    color: var(--gold-color);
    border-bottom-color: var(--gold-color);
}

/* Footer */
.footer {
    text-align: center;
    padding: 30px 0;
    color: var(--text-light);
    font-size: 0.9rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    body {
        padding-top: 70px;
    }

    .nav-container {
        height: 60px;
    }

    .nav-menu {
        position: fixed;
        top: 60px;
        left: 0;
        right: 0;
        background: var(--bg-color);
        flex-direction: column;
        gap: 0;
        padding: 20px;
        border-bottom: 1px solid var(--border-color);
        box-shadow: var(--shadow-md);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all 0.3s ease;
    }

    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    .nav-menu li {
        width: 100%;
    }

    .nav-link {
        display: block;
        padding: 12px 0;
        font-size: 1rem;
        border-bottom: 1px solid var(--border-color);
    }

    .nav-link::after {
        display: none;
    }

    .mobile-menu-toggle {
        display: flex;
    }

    .container {
        padding: 20px 15px;
    }

    .header {
        padding: 40px 30px;
    }

    .profile-section {
        flex-direction: column;
        text-align: center;
        gap: 20px;
    }

    .name {
        font-size: 2.2rem;
    }

    .title {
        font-size: 1.1rem;
    }

    .tagline {
        font-size: 0.95rem;
        margin-top: 12px;
        margin-bottom: 15px;
    }

    .header-badges {
        justify-content: center;
        gap: 10px;
    }

    .header-badge {
        font-size: 0.85rem;
        padding: 6px 14px;
    }

    .contact-info {
        flex-direction: column;
        align-items: center;
    }

    .contact-item {
        width: 100%;
        justify-content: center;
    }

    .section {
        padding: 30px 25px;
    }

    .section-title {
        font-size: 1.6rem;
    }

    .timeline-header {
        flex-direction: column;
        gap: 10px;
    }

    .item-date {
        align-self: flex-start;
    }

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

    .profile-image {
        width: 120px;
        height: 120px;
    }
}

@media (max-width: 480px) {
    .name {
        font-size: 1.8rem;
    }

    .tagline {
        font-size: 0.9rem;
        line-height: 1.5;
    }

    .header-badge {
        font-size: 0.8rem;
        padding: 5px 12px;
    }

    .section {
        padding: 25px 20px;
    }

    .timeline-item {
        padding: 20px;
    }

    .item-title {
        font-size: 1.15rem;
    }
}

/* Print Styles */
@media print {
    body {
        background: white;
        padding-top: 0;
    }

    .navbar {
        display: none;
    }

    .container {
        max-width: 100%;
        padding: 0;
    }

    .section {
        box-shadow: none;
        page-break-inside: avoid;
        border: 1px solid var(--border-color);
    }

    .timeline-item {
        page-break-inside: avoid;
    }

    .header::before {
        display: none;
    }

    a {
        color: var(--text-primary);
        text-decoration: underline;
    }
}