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

:root {
    --bg-primary: #ffffff;
    --bg-secondary: #f8f9fa;
    --text-primary: #1a1a1a;
    --text-secondary: #666666;
    --accent: #0066cc;
    --accent-hover: #0052a3;
    --border: #e0e0e0;
    --shadow: rgba(0, 0, 0, 0.1);
}

[data-theme="dark"] {
    --bg-primary: #1a1a1a;
    --bg-secondary: #2d2d2d;
    --text-primary: #ffffff;
    --text-secondary: #b0b0b0;
    --accent: #4d9fff;
    --accent-hover: #66b3ff;
    --border: #404040;
    --shadow: rgba(0, 0, 0, 0.3);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    transition: background 0.3s ease, color 0.3s ease;
}

/* Navigation */
nav {
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(10px);
}

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

nav .logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent);
}

nav ul {
    list-style: none;
    display: flex;
    gap: 2rem;
    align-items: center;
}

nav a {
    color: var(--text-primary);
    text-decoration: none;
    transition: color 0.3s ease;
}

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

.theme-toggle {
    background: var(--bg-primary);
    border: 1px solid var(--border);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    cursor: pointer;
    transition: all 0.3s ease;
    color: var(--text-primary);
    font-size: 1rem;
}

.theme-toggle:hover {
    transform: scale(1.05);
}

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

/* Content Links */
p a, 
li a {
    color: inherit;
    font-weight: 700;
    text-decoration: none;
}

p a:hover, 
li a:hover {
    opacity: 0.7;
    text-decoration: underline;
}


/* Hero Section */
.hero {
    padding: 4rem 0;
}

.hero .container {
    display: flex;
    align-items: center;
    gap: 3rem;
}

.profile-photo {
    width: 300px;
    height: 300px;
    border-radius: 60%;
    object-fit: cover;
    border: 4px solid var(--accent);
    box-shadow: 0 8px 24px var(--shadow);
    flex-shrink: 0;
    transition: transform 0.3s ease;
}

.profile-photo:hover {
    transform: scale(1.05);
}

.hero-content {
    flex: 1;
    text-align: left;
}

.hero-content h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, var(--accent), #00cc88);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-content p {
    font-size: 1.3rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

.hero .cta {
    display: flex;
    gap: 1rem;
}

/* Buttons */
.btn {
    padding: 0.8rem 2rem;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    display: inline-block;
}

.btn-primary {
    background: var(--accent);
    color: white;
}

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

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

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

/* Sections */
section {
    padding: 4rem 0;
}

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

/* About Section */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
}

.skills {
    display: flex;
    flex-wrap: wrap;
    gap: 0.8rem;
}

.skill-tag {
    background: var(--bg-secondary);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    border: 1px solid var(--border);
    transition: all 0.3s ease;
}

.skill-tag:hover {
    transform: translateY(-2px);
    border-color: var(--accent);
}

/* Experience and Education Items */
.experience-item, 
.education-item {
    background: var(--bg-secondary);
    padding: 1.5rem;
    border-radius: 12px;
    margin-bottom: 1.5rem;
    border-left: 4px solid var(--accent);
    transition: transform 0.3s ease;
}

.experience-item:hover, 
.education-item:hover {
    transform: translateX(8px);
}

.experience-item h3, 
.education-item h3 {
    color: var(--accent);
    margin-bottom: 0.5rem;
}

.date {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
}

/* Footer */
footer {
    background: var(--bg-secondary);
    padding: 2rem 0;
    text-align: center;
    margin-top: 4rem;
    border-top: 1px solid var(--border);
}

.social-links {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    margin-top: 1rem;
}

.social-links a {
    color: var(--text-primary);
    font-size: 1.5rem;
    transition: color 0.3s ease;
    text-decoration: none;
}

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

/* Responsive Design */
@media (max-width: 768px) {
    nav ul {
        gap: 1rem;
    }

    .hero .container {
        flex-direction: column;
        text-align: center;
    }

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

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

    .hero .cta {
        flex-direction: column;
        align-items: center;
    }

    .profile-photo {
        width: 250px;
        height: 25  0px;
    }

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