:root {
    --bg-color: #ffffff;
    --text-color: #1a1a1a;
    --accent-color: #2563eb;
    --secondary-bg: #ffffff;
    --glass-bg: rgba(255, 255, 255, 0.85);
    --glass-border: rgba(0, 0, 0, 0.1);
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

body.dark-mode {
    --bg-color: #141414;
    --text-color: #e2e2e2;
    --accent-color: #60a5fa;
    --secondary-bg: #1c1c1c;
    --glass-bg: rgba(20, 20, 20, 0.85);
    --glass-border: #2a2a2a;
    --tag-bg: #222222;
}

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

html {
    scroll-behavior: smooth;
    scrollbar-gutter: stable;
}

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

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

/* Navbar */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
    padding: 1.5rem 2rem;
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--glass-border);
    z-index: 1000;
}

.logo {
    display: flex;
    justify-content: flex-start;
}

.logo img {
    height: 35px;
    display: block;
    filter: brightness(0);
    transition: var(--transition);
}

.logo img:hover {
    transform: scale(1.05);
    filter: brightness(0) drop-shadow(0 0 5px var(--accent-color));
}

body.dark-mode .logo img {
    filter: brightness(1);
}

body.dark-mode .logo img:hover {
    filter: brightness(1) drop-shadow(0 0 8px var(--accent-color));
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2rem;
    justify-content: center;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-color);
    font-weight: 400;
    transition: var(--transition);
    padding: 0.5rem 0.8rem;
    border-radius: 8px;
}

.nav-links a:hover {
    color: var(--accent-color);
    background: rgba(37, 99, 235, 0.05);
    transform: translateY(-2px);
}

.controls {
    display: flex;
    align-items: center;
    gap: 1rem;
    justify-content: flex-end;
}

.lang-select {
    padding: 0.5rem;
    border-radius: 8px;
    border: 1px solid var(--glass-border);
    background: var(--secondary-bg);
    color: var(--text-color);
    font-family: inherit;
    cursor: pointer;
    outline: none;
}

.theme-btn {
    background: none;
    border: 1px solid var(--glass-border);
    padding: 0.5rem;
    border-radius: 8px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.theme-btn:hover {
    background: var(--secondary-bg);
}

.icon-sun {
    display: block;
}

.icon-moon {
    display: none;
}

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

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

/* Hero Section */
.hero {
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    background: radial-gradient(circle at 10% 20%, rgba(37, 99, 235, 0.05) 0%, rgba(255, 255, 255, 0) 44%);
    padding: 0 2rem;
}

.hero-content h1 {
    font-size: 4rem;
    margin-bottom: 1.5rem;
    line-height: 1.1;
    font-weight: 600;
    animation: floating 3s ease-in-out infinite;
}

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

.highlight {
    color: var(--accent-color);
}

.hero-content p {
    font-size: 1.25rem;
    color: #4b5563;
    max-width: 600px;
    margin: 0 auto 2rem;
}

.btn {
    display: inline-block;
    padding: 0.8rem 2.2rem;
    background-color: var(--text-color);
    color: var(--bg-color);
    text-decoration: none;
    border-radius: 50px;
    font-weight: 600;
    transition: var(--transition);
    border: 2px solid var(--text-color);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.btn:hover {
    background-color: transparent;
    color: var(--text-color);
    transform: translateY(-3px) scale(1.02);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
}

/* Projects Section */
.projects-section {
    padding: 6rem 0;
}

.projects-section h2 {
    font-size: 2.5rem;
    margin-bottom: 3rem;
    text-align: center;
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.project-card {
    background: var(--secondary-bg);
    border-radius: 20px;
    overflow: hidden;
    transition: var(--transition);
    border: 1px solid #e2e8f0;
    cursor: pointer;
    text-decoration: none;
    color: inherit;
    display: block;
}

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

.project-card:active {
    transform: scale(0.98);
}

.project-image {
    width: 100%;
    height: 280px;
    background-color: #cbd5e1;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.project-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

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

.project-info {
    padding: 1.5rem;
    text-align: center;
}

.project-info h3 {
    font-size: 1.4rem;
    margin-bottom: 0.5rem;
}

.project-info p {
    color: #64748b;
    font-size: 0.9rem;
    margin-bottom: 1rem;
}

.project-tags {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    justify-content: center;
}

.tag {
    background: var(--accent-color);
    color: white;
    font-size: 0.75rem;
    padding: 0.2rem 0.6rem;
    border-radius: 20px;
    font-weight: 600;
    border: 1px solid transparent;
}

body.dark-mode .tag {
    background: var(--tag-bg);
    border: 1px solid var(--accent-color);
    color: var(--accent-color);
}

/* About Section */
.about-section {
    padding: 6rem 0;
    max-width: 800px;
    margin: 0 auto;
}

.about-section h2 {
    font-size: 2.5rem;
    margin-bottom: 2.5rem;
    text-align: center;
}

.about-content p {
    margin-bottom: 1.5rem;
    font-size: 1.1rem;
    color: #4b5563;
    transition: var(--transition);
}

.about-content p:hover {
    transform: translateX(10px);
    color: var(--text-color);
}

body.dark-mode .about-content p {
    color: #a3a3a3;
}

.about-content strong {
    color: var(--text-color);
    font-weight: 700;
}

body.dark-mode .about-content strong {
    color: #fff;
}

.about-content h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent-color);
    margin-top: 2.5rem;
    margin-bottom: 1rem;
    position: relative;
    padding-left: 1rem;
}

.about-content h3::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 4px;
    height: 70%;
    background: var(--accent-color);
    border-radius: 4px;
}

.about-content ul {
    list-style: none;
    margin-bottom: 1.5rem;
}

.about-content ul li {
    position: relative;
    padding: 0.5rem 0 0.5rem 1.8rem;
    font-size: 1.05rem;
    color: #4b5563;
    transition: all 0.4s cubic-bezier(0.22, 1, 0.36, 1);
}

.about-content ul li::before {
    content: '▸';
    position: absolute;
    left: 0;
    color: var(--accent-color);
    font-weight: 700;
    font-size: 1.2rem;
    transition: transform 0.3s ease;
}

.about-content ul li:hover {
    transform: translateX(12px);
    color: var(--text-color);
}

.about-content ul li:hover::before {
    transform: translateX(6px);
}

body.dark-mode .about-content ul li {
    color: #a3a3a3;
}

.about-content ul.about-highlight {
    background: rgba(37, 99, 235, 0.05);
    border: 1px solid rgba(37, 99, 235, 0.15);
    border-radius: 12px;
    padding: 0.8rem 1.2rem;
    margin-bottom: 1.5rem;
}

body.dark-mode .about-content ul.about-highlight {
    background: rgba(96, 165, 250, 0.08);
    border-color: rgba(96, 165, 250, 0.2);
}

.about-content ul.about-highlight li {
    padding: 0.4rem 0 0.4rem 1.5rem;
    font-weight: 600;
    color: var(--accent-color);
}

.about-content ul.about-highlight li::before {
    content: '★';
    font-size: 1rem;
}

body.dark-mode .about-content ul.about-highlight li {
    color: var(--accent-color);
}

/* Animations */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 1s cubic-bezier(0.22, 1, 0.36, 1),
        transform 1s cubic-bezier(0.22, 1, 0.36, 1);
}

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

.stagger-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s cubic-bezier(0.22, 1, 0.36, 1),
        transform 0.6s cubic-bezier(0.22, 1, 0.36, 1);
}

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

.logo {
    cursor: default;
    transition: var(--transition);
}

.logo:hover {
    color: var(--accent-color);
    transform: skewX(-5deg);
}

/* Contact Section */
.contact-section {
    padding: 6rem 0;
    max-width: 800px;
    margin: 0 auto;
}

.contact-section h2 {
    font-size: 2.5rem;
    margin-bottom: 2rem;
    text-align: center;
}

.contact-content blockquote {
    font-size: 1.25rem;
    padding-left: 0;
    margin-bottom: 2.5rem;
    color: #4b5563;
    font-style: italic;
    text-align: center;
}

body.dark-mode .contact-content blockquote {
    color: #a3a3a3;
}

.contact-links {
    display: flex;
    flex-direction: column;
    gap: 1.2rem;
    background: var(--secondary-bg);
    padding: 2.5rem;
    border-radius: 20px;
    border: 1px solid var(--glass-border);
}

.contact-links p {
    font-size: 1.1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: var(--transition);
}

.contact-links p:hover {
    transform: scale(1.02);
}

.contact-links a {
    color: var(--accent-color);
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
    position: relative;
}

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

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

.contact-links a:hover {
    opacity: 0.8;
}

/* Footer */
.footer {
    text-align: center;
    padding: 4rem 2rem;
    background: var(--secondary-bg);
    border-top: 1px solid #e2e8f0;
}

@media (max-width: 768px) {
    .hero-content h1 {
        font-size: 2.5rem;
    }

    .nav-links {
        display: none;
    }

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