:root {
    --primary: #6366F1;
    --primary-light: #818CF8;
    --primary-dark: #4F46E5;
    --text: #E5E7EB;
    --text-secondary: #9CA3AF;
    --text-dark: #111827;
    --bg: #0F172A;
    --bg-light: #1E293B;
    --bg-lighter: #334155;
    --card-bg: #1E293B;
    --border: rgba(255, 255, 255, 0.1);
    --glass: rgba(30, 41, 59, 0.5);
    --section-padding: 100px;
    --border-radius: 12px;
    --box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-theme="light"] {
    --primary: #6366F1;
    --primary-light: #818CF8;
    --primary-dark: #4F46E5;
    --text: #111827;
    --text-secondary: #6B7280;
    --text-dark: #E5E7EB;
    --bg: #F9FAFB;
    --bg-light: #FFFFFF;
    --bg-lighter: #F3F4F6;
    --card-bg: #FFFFFF;
    --border: rgba(0, 0, 0, 0.1);
    --glass: rgba(255, 255, 255, 0.5);
}

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

body {
    background-color: var(--bg);
    color: var(--text);
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    transition: var(--transition);
    overflow-x: hidden;
}

h1,
h2,
h3,
h4 {
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 700;
    line-height: 1.2;
}

/* Loading Animation */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--bg);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    transition: opacity 0.5s ease;
}

.loading-spinner {
    width: 50px;
    height: 50px;
    border: 5px solid var(--primary);
    border-top-color: transparent;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Modern Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-light);
}

::-webkit-scrollbar-thumb {
    background: var(--primary);
    border-radius: 4px;
}

/* Layout */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

section {
    padding: var(--section-padding) 0;
    position: relative;
}

/* Header & Navigation */
header {
    position: fixed;
    top: 0;
    width: 100%;
    padding: 20px 0;
    z-index: 1000;
    transition: var(--transition);
}

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

.header-scrolled {
    background-color: var(--glass);
    backdrop-filter: blur(10px);
    box-shadow: var(--box-shadow);
    padding: 15px 0;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 8px;
}

.logo-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    background-color: var(--primary);
    color: white;
    border-radius: 8px;
    font-size: 1rem;
}

/* Time and Date Display in Header */
.header-time {
    display: flex;
    align-items: center;
    gap: 15px;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

nav ul {
    display: flex;
    list-style: none;
    gap: 30px;
}

nav a {
    color: var(--text);
    text-decoration: none;
    font-weight: 500;
    position: relative;
    transition: var(--transition);
    font-size: 0.95rem;
}

nav a:hover {
    color: var(--primary);
}

nav a:focus {
    outline: 2px solid var(--primary);
    outline-offset: 4px;
    border-radius: 4px;
}

nav a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--primary);
    transition: var(--transition);
}

nav a:hover::after {
    width: 100%;
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 20px;
}

.theme-toggle {
    background: none;
    border: none;
    color: var(--text);
    font-size: 1.2rem;
    cursor: pointer;
    transition: var(--transition);
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
}

.theme-toggle:hover {
    background-color: var(--bg-light);
    color: var(--primary);
}

.theme-toggle:focus {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    color: var(--text);
    font-size: 1.5rem;
    cursor: pointer;
    width: 40px;
    height: 40px;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: var(--transition);
    z-index: 1001;
}

.mobile-menu-btn:hover {
    background-color: var(--bg-light);
}

.mobile-menu-btn:focus {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

/* Mobile Menu */
@media (max-width: 768px) {
    nav {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 300px;
        height: 100vh;
        background-color: var(--bg-light);
        backdrop-filter: blur(10px);
        transition: right 0.3s ease;
        z-index: 1000;
        padding: 80px 30px 30px;
        box-shadow: -5px 0 15px rgba(0, 0, 0, 0.1);
    }

    nav.active {
        right: 0;
    }

    nav ul {
        flex-direction: column;
        gap: 20px;
    }

    .header-time {
        display: none;
    }

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

/* Simplified Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 80px;
    position: relative;
    overflow: hidden;
    text-align: center;
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
    padding: 20px;
}

.hero h1 {
    font-size: 3rem;
    margin-bottom: 20px;
    color: var(--primary);
    animation: fadeIn 1s ease-out;
}

.hero h2 {
    font-size: 1.8rem;
    margin-bottom: 30px;
    color: var(--text);
    font-weight: 400;
    animation: fadeIn 1s ease-out 0.3s forwards;
    opacity: 0;
}

.hero p {
    font-size: 1.2rem;
    margin-bottom: 40px;
    color: var(--text-secondary);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    animation: fadeIn 1s ease-out 0.6s forwards;
    opacity: 0;
}

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

.profile-img {
    width: 150px;
    height: 150px;
    border-radius: 50%;
    object-fit: cover;
    border: 4px solid var(--primary);
    margin: 0 auto 30px;
    display: block;
    animation: float 4s ease-in-out infinite;
}

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

/* Simplified Typewriter */
.typewriter-container {
    height: 2.5rem;
    margin-bottom: 30px;
}

.typewriter {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text);
}

.typewriter::after {
    content: '|';
    animation: blink 1s step-end infinite;
    color: var(--primary);
}

@keyframes blink {
    from, to { opacity: 1; }
    50% { opacity: 0; }
}

/* Buttons */
.btn-group {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
    justify-content: center;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 28px;
    border-radius: 8px;
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition);
    gap: 8px;
    border: none;
    cursor: pointer;
    font-size: 0.95rem;
    min-width: 44px;
    min-height: 44px;
}

.btn:focus {
    outline: 2px solid var(--primary-dark);
    outline-offset: 2px;
}

.btn-primary {
    background-color: var(--primary);
    color: white;
    box-shadow: 0 4px 6px -1px rgba(99, 102, 241, 0.3), 0 2px 4px -1px rgba(99, 102, 241, 0.1);
}

.btn-primary:hover {
    background-color: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 10px 15px -3px rgba(99, 102, 241, 0.3), 0 4px 6px -2px rgba(99, 102, 241, 0.1);
}

.btn-secondary {
    background-color: var(--bg-light);
    color: var(--text);
    border: 1px solid var(--border);
}

.btn-secondary:hover {
    background-color: var(--bg-lighter);
    transform: translateY(-2px);
    border-color: var(--primary);
}

.btn-tertiary {
    background-color: transparent;
    color: var(--primary);
    border: 2px solid var(--primary);
}

.btn-tertiary:hover {
    background-color: rgba(99, 102, 241, 0.1);
    transform: translateY(-2px);
}

.social-links {
    display: flex;
    gap: 20px;
    margin-top: 40px;
    justify-content: center;
}

.social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background-color: var(--bg-light);
    color: var(--text);
    transition: var(--transition);
    font-size: 1.1rem;
}

.social-link:hover {
    background-color: var(--primary);
    color: white;
    transform: translateY(-3px);
}

.social-link:focus {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

/* Stats Counter */
.stats-container {
    display: flex;
    justify-content: center;
    gap: 30px;
    margin-top: 30px;
    flex-wrap: wrap;
}

.stat-item {
    text-align: center;
    background: var(--bg-light);
    padding: 20px;
    border-radius: var(--border-radius);
    min-width: 150px;
    box-shadow: var(--box-shadow);
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 5px;
    font-family: 'Space Grotesk', sans-serif;
}

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

/* Sections */
.section-title {
    font-size: clamp(1.8rem, 3vw, 2.5rem);
    margin-bottom: 60px;
    text-align: center;
    position: relative;
    display: inline-block;
    left: 50%;
    transform: translateX(-50%);
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), transparent);
    border-radius: 2px;
}

/* About Section */
.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: center;
}

.about-text p {
    margin-bottom: 20px;
    color: var(--text-secondary);
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin-top: 30px;
}

.skill-item {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 15px;
    background-color: var(--bg-light);
    border-radius: var(--border-radius);
    transition: var(--transition);
}

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

.skill-icon {
    width: 40px;
    height: 40px;
    background-color: var(--primary);
    color: white;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
}

/* Skill Icons with Images */
.skill-icon-img {
    width: 40px;
    height: 40px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: white;
    padding: 5px;
}

.skill-icon-img img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
}

.timeline {
    position: relative;
    padding-left: 30px;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 10px;
    top: 0;
    height: 100%;
    width: 2px;
    background-color: var(--primary);
}

.timeline-item {
    position: relative;
    padding-bottom: 30px;
}

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

.timeline-item::before {
    content: '';
    position: absolute;
    left: -30px;
    top: 5px;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background-color: var(--primary);
    border: 3px solid var(--bg-light);
}

.timeline-date {
    font-size: 0.9rem;
    color: var(--primary);
    margin-bottom: 5px;
}

.timeline-title {
    font-size: 1.2rem;
    margin-bottom: 5px;
}

.timeline-description {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* CV Download Section */
.cv-section {
    text-align: center;
    margin-top: 40px;
    padding: 30px;
    background-color: var(--card-bg);
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    border: 1px solid var(--border);
}

.cv-buttons {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-top: 20px;
    flex-wrap: wrap;
}

/* Skills Section */
.skills-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.skill-card {
    background-color: var(--card-bg);
    border-radius: var(--border-radius);
    padding: 30px;
    box-shadow: var(--box-shadow);
    transition: var(--transition);
    border: 1px solid var(--border);
}

.skill-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

.skill-header {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 20px;
}

.skill-icon-container {
    width: 50px;
    height: 50px;
    background-color: var(--primary);
    color: white;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

/* Skill Icons with Images */
.skill-icon-container-img {
    width: 50px;
    height: 50px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: white;
    padding: 8px;
}

.skill-icon-container-img img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
}

.skill-name {
    font-size: 1.3rem;
}

.skill-description {
    color: var(--text-secondary);
    margin-bottom: 20px;
}

.tools-container {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.tool {
    background-color: var(--bg-light);
    color: var(--text);
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 500;
}

/* Projects Section */
.projects-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
}

.project-card {
    background-color: var(--card-bg);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--box-shadow);
    transition: var(--transition);
    border: 1px solid var(--border);
}

.project-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

.project-image-container {
    height: 200px;
    overflow: hidden;
}

.project-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.project-card:hover .project-img {
    transform: scale(1.05);
}

.project-content {
    padding: 25px;
}

.project-title {
    font-size: 1.3rem;
    margin-bottom: 10px;
}

.project-description {
    color: var(--text-secondary);
    margin-bottom: 15px;
}

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 20px;
}

.tag {
    background-color: var(--bg-light);
    color: var(--primary);
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 500;
}

.project-links {
    display: flex;
    gap: 15px;
}

.project-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--primary);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
}

.project-link:hover {
    color: var(--primary-dark);
    transform: translateY(-2px);
}

/* Contact Section */
.contact-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 25px;
}

.contact-item {
    display: flex;
    gap: 20px;
    align-items: flex-start;
}

.contact-icon {
    width: 50px;
    height: 50px;
    background-color: var(--primary);
    color: white;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    flex-shrink: 0;
}

.contact-text h3 {
    font-size: 1.2rem;
    margin-bottom: 5px;
}

.contact-text a, .contact-text p {
    color: var(--text-secondary);
    text-decoration: none;
    transition: var(--transition);
}

.contact-text a:hover {
    color: var(--primary);
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
}

.form-control {
    width: 100%;
    padding: 12px 15px;
    border-radius: var(--border-radius);
    border: 1px solid var(--border);
    background-color: var(--bg-light);
    color: var(--text);
    font-family: inherit;
    font-size: 1rem;
    transition: var(--transition);
}

.form-control:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 2px rgba(99, 102, 241, 0.2);
}

textarea.form-control {
    min-height: 150px;
    resize: vertical;
}

.form-submit-btn {
    width: 100%;
}

/* Form Success Message */
.form-success {
    display: none;
    background-color: rgba(74, 222, 128, 0.2);
    color: #22c55e;
    padding: 15px;
    border-radius: var(--border-radius);
    margin-top: 20px;
    text-align: center;
    animation: fadeIn 0.5s ease-out;
}

/* Form Error Message */
.form-error {
    display: none;
    background-color: rgba(248, 113, 113, 0.2);
    color: #ef4444;
    padding: 15px;
    border-radius: var(--border-radius);
    margin-top: 20px;
    text-align: center;
    animation: fadeIn 0.5s ease-out;
}

/* Footer */
footer {
    background-color: var(--bg-light);
    padding: 50px 0 30px;
    text-align: center;
}

.footer-content {
    max-width: 600px;
    margin: 0 auto;
}

.footer-logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
    text-decoration: none;
    display: inline-block;
    margin-bottom: 20px;
}

.footer-links {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 20px;
    margin-bottom: 30px;
}

.footer-link {
    color: var(--text);
    text-decoration: none;
    transition: var(--transition);
}

.footer-link:hover {
    color: var(--primary);
}

.footer-social {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-bottom: 30px;
}

.footer-social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background-color: var(--bg);
    color: var(--text);
    transition: var(--transition);
    font-size: 1.1rem;
}

.footer-social-link:hover {
    background-color: var(--primary);
    color: white;
    transform: translateY(-3px);
}

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

/* Back to Top Button */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background-color: var(--primary);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 999;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
}

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

.back-to-top:hover {
    background-color: var(--primary-dark);
    transform: translateY(-3px);
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

.back-to-top:focus {
    outline: 2px solid var(--primary-dark);
    outline-offset: 2px;
}

/* CV Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.8);
    z-index: 10000;
    overflow: auto;
}

.modal-content {
    background-color: var(--bg-light);
    margin: 5% auto;
    padding: 30px;
    border-radius: var(--border-radius);
    max-width: 900px;
    width: 90%;
    position: relative;
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

.close {
    position: absolute;
    top: 15px;
    right: 15px;
    color: var(--text-secondary);
    font-size: 1.5rem;
    font-weight: bold;
    cursor: pointer;
    transition: var(--transition);
}

.close:hover {
    color: var(--primary);
}

/* 404 Page (hidden by default) */
.not-found {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 20px;
}

.not-found h1 {
    font-size: 6rem;
    color: var(--primary);
    margin-bottom: 20px;
}

.not-found p {
    font-size: 1.5rem;
    margin-bottom: 30px;
    max-width: 600px;
}

/* Animations */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

.delay-1 {
    transition-delay: 0.2s;
}

.delay-2 {
    transition-delay: 0.4s;
}

.delay-3 {
    transition-delay: 0.6s;
}

/* Responsive Adjustments */
@media (max-width: 992px) {
    :root {
        --section-padding: 80px;
        font-size: 15px;
    }

    .about-content {
        grid-template-columns: 1fr;
    }

    .contact-container {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    :root {
        --section-padding: 60px;
        font-size: 14px;
    }

    .hero h1 {
        font-size: 2.5rem;
    }

    .hero h2 {
        font-size: 1.5rem;
    }

    .cv-buttons {
        flex-direction: column;
        align-items: center;
    }

    .hero p {
        margin-left: auto;
        margin-right: auto;
        font-size: 1.1rem;
    }

    .btn-group {
        justify-content: center;
    }

    .social-links {
        justify-content: center;
    }

    .stats-container {
        flex-direction: column;
        align-items: center;
    }
}

@media (max-width: 576px) {
    :root {
        --section-padding: 50px;
        font-size: 13px;
    }

    .projects-container {
        grid-template-columns: 1fr;
    }

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

    .hero h1 {
        font-size: 2rem;
    }

    .hero h2 {
        font-size: 1.3rem;
    }

    .hero p {
        font-size: 1rem;
    }
}