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

/* Page Loader */
.page-loader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #0a0e27 0%, #1a1f42 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

.page-loader.hidden {
    opacity: 0;
    visibility: hidden;
}

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

.loader-ring {
    width: 80px;
    height: 80px;
    margin: 0 auto 24px;
    border: 4px solid rgba(99, 102, 241, 0.2);
    border-top: 4px solid #6366f1;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.loader-content p {
    color: #a8b3cf;
    font-size: 16px;
    font-weight: 500;
    letter-spacing: 2px;
    animation: pulse 1.5s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 0.6; }
    50% { opacity: 1; }
}

:root {
    --bg-primary: #0a0e27;
    --bg-secondary: #151a35;
    --bg-card: rgba(255, 255, 255, 0.05);
    --text-primary: #ffffff;
    --text-secondary: #a8b3cf;
    --accent-color: #6366f1;
    --accent-secondary: #8b5cf6;
    --hover-color: rgba(255, 255, 255, 0.08);
    --border-color: rgba(255, 255, 255, 0.1);
    --border-radius: 20px;
    --transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    --glow-color: rgba(99, 102, 241, 0.4);
}

[data-theme="light"] {
    --bg-primary: #f8fafc;
    --bg-secondary: #ffffff;
    --bg-card: rgba(255, 255, 255, 0.8);
    --text-primary: #0f172a;
    --text-secondary: #64748b;
    --accent-color: #6366f1;
    --accent-secondary: #8b5cf6;
    --hover-color: rgba(99, 102, 241, 0.05);
    --border-color: rgba(0, 0, 0, 0.1);
    --glow-color: rgba(99, 102, 241, 0.2);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: linear-gradient(135deg, var(--bg-primary) 0%, #1a1f42 50%, var(--bg-secondary) 100%);
    color: var(--text-primary);
    min-height: 100vh;
    line-height: 1.6;
    position: relative;
    overflow-x: hidden;
}

body::before {
    content: '';
    position: fixed;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle at 30% 50%, rgba(99, 102, 241, 0.15) 0%, transparent 50%),
                radial-gradient(circle at 70% 80%, rgba(139, 92, 246, 0.15) 0%, transparent 50%);
    animation: gradientShift 15s ease infinite;
    pointer-events: none;
    z-index: 0;
}

@keyframes gradientShift {
    0%, 100% { transform: translate(0, 0) rotate(0deg); }
    33% { transform: translate(5%, -5%) rotate(120deg); }
    66% { transform: translate(-5%, 5%) rotate(240deg); }
}

body > * {
    position: relative;
    z-index: 1;
}

.theme-toggle {
    position: fixed;
    top: 24px;
    right: 24px;
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    transition: var(--transition);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
}

.theme-toggle:hover {
    transform: scale(1.1) rotate(15deg);
    box-shadow: 0 8px 24px var(--glow-color);
}

.theme-toggle i {
    position: absolute;
    font-size: 20px;
    transition: var(--transition);
}

.theme-toggle .fa-moon {
    color: var(--accent-color);
    opacity: 1;
    transform: rotate(0deg) scale(1);
}

.theme-toggle .fa-sun {
    color: #fbbf24;
    opacity: 0;
    transform: rotate(180deg) scale(0);
}

[data-theme="light"] .theme-toggle .fa-moon {
    opacity: 0;
    transform: rotate(-180deg) scale(0);
}

[data-theme="light"] .theme-toggle .fa-sun {
    opacity: 1;
    transform: rotate(0deg) scale(1);
}

@keyframes bounce {
    0%, 100% { transform: scale(1) rotate(0deg); }
    25% { transform: scale(1.2) rotate(10deg); }
    50% { transform: scale(0.9) rotate(-10deg); }
    75% { transform: scale(1.1) rotate(5deg); }
}

.container {
    max-width: 680px;
    margin: 0 auto;
    padding: 40px 20px;
    animation: fadeIn 0.6s ease;
}

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

.profile-section {
    text-align: center;
    margin-bottom: 40px;
    animation: slideDown 0.6s ease;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.profile-image {
    width: 160px;
    height: 160px;
    margin: 0 auto 24px;
    border-radius: 50%;
    overflow: hidden;
    border: 4px solid transparent;
    background: linear-gradient(var(--bg-secondary), var(--bg-secondary)) padding-box,
                linear-gradient(135deg, var(--accent-color), var(--accent-secondary)) border-box;
    box-shadow: 0 8px 32px var(--glow-color),
                0 0 80px rgba(99, 102, 241, 0.2);
    transition: var(--transition);
    position: relative;
}

.profile-image::before {
    content: '';
    position: absolute;
    inset: -4px;
    border-radius: 50%;
    padding: 4px;
    background: linear-gradient(135deg, var(--accent-color), var(--accent-secondary));
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    opacity: 0;
    transition: var(--transition);
}

.profile-image:hover {
    transform: scale(1.05) rotate(2deg);
    box-shadow: 0 12px 48px var(--glow-color),
                0 0 120px rgba(99, 102, 241, 0.3);
}

.profile-image:hover::before {
    opacity: 1;
    animation: rotateBorder 3s linear infinite;
}

@keyframes rotateBorder {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

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

.name {
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 12px;
    background: linear-gradient(135deg, #ffffff 0%, #a0a0a0 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.title {
    font-size: 16px;
    color: var(--text-secondary);
    line-height: 1.5;
    max-width: 500px;
    margin: 0 auto;
}

.links-section {
    margin-bottom: 40px;
}

.link-card {
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-radius: var(--border-radius);
    padding: 24px 28px;
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 20px;
    text-decoration: none;
    color: var(--text-primary);
    transition: var(--transition);
    border: 1px solid var(--border-color);
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.link-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(99, 102, 241, 0.1), transparent);
    transition: left 0.6s ease;
}

.link-card::after {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: var(--border-radius);
    padding: 1px;
    background: linear-gradient(135deg, var(--accent-color), var(--accent-secondary));
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    opacity: 0;
    transition: var(--transition);
}

.link-card:hover::before {
    left: 100%;
}

.link-card:hover::after {
    opacity: 1;
}

.link-card:hover {
    background: var(--hover-color);
    transform: translateX(8px) translateY(-2px);
    box-shadow: 0 12px 40px rgba(99, 102, 241, 0.2),
                0 0 0 1px var(--border-color);
}

.link-card .icon {
    width: 56px;
    height: 56px;
    border-radius: 14px;
    background: linear-gradient(135deg, var(--accent-color), var(--accent-secondary));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    flex-shrink: 0;
    box-shadow: 0 4px 16px var(--glow-color),
                inset 0 1px 0 rgba(255, 255, 255, 0.2);
    transition: var(--transition);
}

.link-card:hover .icon {
    transform: scale(1.1) rotate(-5deg);
    box-shadow: 0 8px 24px var(--glow-color),
                inset 0 1px 0 rgba(255, 255, 255, 0.3);
}

.link-content {
    flex: 1;
}

.link-content h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 4px;
}

.link-content .subtitle {
    font-size: 14px;
    color: var(--text-secondary);
}

.link-card .arrow {
    font-size: 16px;
    color: var(--text-secondary);
    transition: var(--transition);
}

.link-card:hover .arrow {
    color: var(--accent-color);
    transform: translateX(4px);
}

.social-section {
    margin-bottom: 40px;
}

.social-section h2 {
    text-align: center;
    font-size: 18px;
    color: var(--text-secondary);
    margin-bottom: 20px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.social-link .icon {
    background: linear-gradient(135deg, #0077b5, #005885);
}

footer {
    text-align: center;
    padding: 30px 20px;
    color: var(--text-secondary);
    font-size: 14px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

/* Modal Styles */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.75);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    animation: fadeIn 0.3s ease;
}

.modal-content {
    background: var(--bg-card);
    backdrop-filter: blur(30px);
    -webkit-backdrop-filter: blur(30px);
    margin: 10% auto;
    padding: 48px;
    border-radius: var(--border-radius);
    max-width: 550px;
    width: 90%;
    position: relative;
    animation: slideUp 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
    border: 1px solid var(--border-color);
    box-shadow: 0 20px 80px rgba(0, 0, 0, 0.5),
                0 0 0 1px var(--border-color);
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.close {
    color: var(--text-secondary);
    position: absolute;
    right: 20px;
    top: 20px;
    font-size: 32px;
    font-weight: 300;
    cursor: pointer;
    transition: var(--transition);
    line-height: 1;
}

.close:hover {
    color: var(--accent-color);
    transform: rotate(90deg);
}

.modal-content h2 {
    margin-bottom: 24px;
    font-size: 28px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.modal-content h2 i {
    color: var(--accent-color);
}

/* Contact Info Modal */
.contact-info {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px;
    background: var(--bg-card);
    border-radius: 12px;
    transition: var(--transition);
}

.contact-item:hover {
    background: var(--hover-color);
    transform: translateX(8px);
}

.contact-item i {
    font-size: 24px;
    color: var(--accent-color);
    width: 32px;
}

.contact-item a {
    color: var(--text-primary);
    text-decoration: none;
    font-size: 16px;
    transition: var(--transition);
}

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

.contact-item span {
    color: var(--text-primary);
    font-size: 16px;
}

/* Resume Modal */
.resume-links {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.download-btn,
.view-btn {
    flex: 1;
    padding: 16px 24px;
    border-radius: 12px;
    text-decoration: none;
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: var(--transition);
    min-width: 180px;
}

.download-btn {
    background: linear-gradient(135deg, var(--accent-color), #357abd);
    color: white;
}

.download-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(74, 158, 255, 0.4);
}

.view-btn {
    background: var(--bg-card);
    color: var(--text-primary);
    border: 2px solid var(--accent-color);
}

.view-btn:hover {
    background: var(--accent-color);
    transform: translateY(-2px);
}

/* Certificates Modal */
.certificates-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 20px;
}

.cert-item {
    background: var(--bg-card);
    padding: 24px;
    border-radius: 12px;
    text-align: center;
    transition: var(--transition);
    border: 1px solid transparent;
}

.cert-item:hover {
    border-color: var(--accent-color);
    transform: translateY(-4px);
}

.cert-item i {
    font-size: 48px;
    color: var(--accent-color);
    margin-bottom: 16px;
}

.cert-item h3 {
    font-size: 16px;
    margin-bottom: 8px;
}

.cert-item p {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 12px;
}

.cert-item a {
    color: var(--accent-color);
    text-decoration: none;
    font-size: 14px;
    font-weight: 600;
}

.cert-item a:hover {
    text-decoration: underline;
}

/* Rating and Comment Modal */
.rating-options,
.comment-options {
    text-align: center;
}

.modal-content > p {
    color: var(--text-secondary);
    margin-bottom: 24px;
    font-size: 16px;
}

.rating-btn,
.comment-btn {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    padding: 16px 32px;
    background: linear-gradient(135deg, var(--accent-color), #357abd);
    color: white;
    text-decoration: none;
    border-radius: 12px;
    font-weight: 600;
    font-size: 16px;
    transition: var(--transition);
}

.rating-btn:hover,
.comment-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(74, 158, 255, 0.4);
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: 24px 16px;
    }

    .theme-toggle {
        top: 16px;
        right: 16px;
        width: 48px;
        height: 48px;
    }

    .theme-toggle i {
        font-size: 18px;
    }

    .name {
        font-size: 28px;
    }

    .title {
        font-size: 15px;
    }

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

    .link-card {
        padding: 20px 22px;
        gap: 16px;
    }

    .link-card .icon {
        width: 52px;
        height: 52px;
        font-size: 20px;
    }

    .modal-content {
        margin: 15% auto;
        padding: 36px 28px;
        width: 92%;
    }

    .resume-links {
        flex-direction: column;
    }

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

@media (max-width: 480px) {
    .container {
        padding: 20px 12px;
    }

    .theme-toggle {
        width: 44px;
        height: 44px;
        top: 12px;
        right: 12px;
    }

    .theme-toggle i {
        font-size: 16px;
    }

    .name {
        font-size: 24px;
    }

    .title {
        font-size: 14px;
    }

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

    .link-card {
        padding: 18px 20px;
    }

    .link-card .icon {
        width: 48px;
        height: 48px;
        font-size: 18px;
    }

    .link-content h3 {
        font-size: 16px;
    }

    .modal-content {
        margin: 20% auto;
        padding: 32px 24px;
        width: 95%;
    }

    .modal-content h2 {
        font-size: 24px;
    }

    .contact-item {
        padding: 14px;
        font-size: 14px;
    }

    .contact-item i {
        font-size: 20px;
    }
}