:root {
    /* Light Theme Colors */
    --bg-color-light: #f4f6f9;
    --text-color-light: #1f2937;
    --text-muted-light: #4b5563;
    --primary-color-light: #3b82f6;
    --accent-color-light: #8b5cf6;
    --glass-bg-light: rgba(255, 255, 255, 0.7);
    --glass-border-light: rgba(255, 255, 255, 0.5);

    /* Dark Theme Colors */
    --bg-color-dark: #0f111a;
    --text-color-dark: #f3f4f6;
    --text-muted-dark: #9ca3af;
    --primary-color-dark: #60a5fa;
    --accent-color-dark: #a78bfa;
    --glass-bg-dark: rgba(30, 41, 59, 0.6);
    --glass-border-dark: rgba(255, 255, 255, 0.08);

    /* Transitions */
    --trans-default: 0.3s ease;
}

body.dark-theme {
    --bg-color: var(--bg-color-dark);
    --text-color: var(--text-color-dark);
    --text-muted: var(--text-muted-dark);
    --primary-color: var(--primary-color-dark);
    --accent-color: var(--accent-color-dark);
    --glass-bg: var(--glass-bg-dark);
    --glass-border: var(--glass-border-dark);
}

body.light-theme {
    --bg-color: var(--bg-color-light);
    --text-color: var(--text-color-light);
    --text-muted: var(--text-muted-light);
    --primary-color: var(--primary-color-light);
    --accent-color: var(--accent-color-light);
    --glass-bg: var(--glass-bg-light);
    --glass-border: var(--glass-border-light);
}

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

html {
    scroll-behavior: smooth;
}

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

h1, h2, h3, h4, .logo-text {
    font-family: 'Outfit', sans-serif;
}

/* Typography Enhancements */
.gradient-text {
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    display: inline-block;
}

/* Glassmorphism */
.glass {
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.1);
}

.glass-card {
    background: var(--glass-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    padding: 2rem;
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.glass-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 36px rgba(0, 0, 0, 0.15);
}

/* Buttons */
.btn-primary {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    color: #fff;
    border: none;
    border-radius: 8px;
    font-weight: 600;
    font-family: 'Outfit', sans-serif;
    cursor: pointer;
    transition: opacity 0.3s ease, transform 0.2s ease;
    text-decoration: none;
}
.btn-primary:hover {
    opacity: 0.9;
    transform: scale(1.05);
}

.icon-btn {
    background: transparent;
    border: none;
    color: var(--text-color);
    font-size: 1.25rem;
    cursor: pointer;
    transition: color 0.3s ease, transform 0.2s ease;
}
.icon-btn:hover {
    color: var(--primary-color);
    transform: scale(1.1);
}

/* Navbar */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    padding: 1rem 5%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    z-index: 1000;
    border-bottom: 1px solid var(--glass-border);
}

.nav-brand .logo-text {
    font-size: 1.5rem;
    font-weight: 800;
    letter-spacing: 2px;
}

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

.nav-links a {
    color: var(--text-color);
    text-decoration: none;
    font-weight: 500;
    position: relative;
    transition: color 0.3s ease;
}

.nav-links a::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -4px;
    left: 0;
    background: var(--primary-color);
    transition: width 0.3s ease;
}

.nav-links a:hover {
    color: var(--primary-color);
}
.nav-links a:hover::after {
    width: 100%;
}

.nav-controls {
    display: flex;
    gap: 1rem;
    align-items: center;
}

/* Sections */
main {
    padding-top: 80px;
}

.section {
    padding: 6rem 5%;
    max-width: 1200px;
    margin: 0 auto;
}

.section-title {
    font-size: 2.5rem;
    margin-bottom: 3rem;
    text-align: center;
    position: relative;
    display: inline-block;
    left: 50%;
    transform: translateX(-50%);
}

.section-title::after {
    content: '';
    position: absolute;
    width: 60%;
    height: 4px;
    bottom: -10px;
    left: 20%;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
    border-radius: 2px;
}

/* Hero Section */
.hero-section {
    min-height: 90vh;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 5%;
    max-width: 1200px;
    margin: 0 auto;
}

.hero-content {
    flex: 1;
    max-width: 600px;
}

.hero-content .greeting {
    font-size: 1.2rem;
    color: var(--primary-color);
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.hero-content h1 {
    font-size: 4.5rem;
    line-height: 1.1;
    margin-bottom: 1rem;
}

.hero-content h2 {
    font-size: 1.5rem;
    color: var(--text-muted);
    font-weight: 400;
    margin-bottom: 1.5rem;
}

.hero-desc {
    font-size: 1.1rem;
    color: var(--text-muted);
    margin-bottom: 2rem;
}

.hero-actions {
    display: flex;
    gap: 2rem;
    align-items: center;
}

.social-links {
    display: flex;
    gap: 1.25rem;
}

.social-links a {
    color: var(--text-color);
    font-size: 1.5rem;
    transition: color 0.3s, transform 0.2s;
}

.social-links a:hover {
    color: var(--primary-color);
    transform: translateY(-3px);
}

.hero-image {
    flex: 1;
    display: flex;
    justify-content: center;
    position: relative;
}

.blob-bg {
    position: absolute;
    width: 400px;
    height: 400px;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    opacity: 0.2;
    border-radius: 50%;
    filter: blur(50px);
    z-index: -1;
    animation: pulse 6s infinite alternate;
}

.profile-img {
    width: 300px;
    height: 300px;
    object-fit: cover;
    border-radius: 30px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.2);
    border: 2px solid var(--glass-border);
}

@keyframes pulse {
    0% { transform: scale(1); opacity: 0.1; }
    100% { transform: scale(1.1); opacity: 0.3; }
}

/* About Section */
.about-grid {
    display: grid;
    grid-template-columns: 3fr 2fr;
    gap: 2rem;
}

.about-text p {
    margin-bottom: 1rem;
    font-size: 1.1rem;
    color: var(--text-muted);
}

.about-text p:last-child {
    margin-bottom: 0;
}

.about-details ul {
    list-style: none;
}

.about-details li {
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 1rem;
}

.about-details i {
    color: var(--primary-color);
    font-size: 1.2rem;
    background: rgba(96, 165, 250, 0.1);
    padding: 0.75rem;
    border-radius: 50%;
}

/* Projects Section */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.project-card h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    color: var(--text-color);
}

.project-role {
    color: var(--primary-color);
    font-weight: 600;
    margin-bottom: 1rem;
    font-size: 0.9rem;
}

.project-card p:last-child {
    color: var(--text-muted);
}

/* Skills Section */
.skills-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
}

.skills-list h3, .certs-list h3 {
    margin-bottom: 1.5rem;
    font-size: 1.4rem;
}

.tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.tags span {
    background: rgba(96, 165, 250, 0.1);
    border: 1px solid var(--primary-color);
    color: var(--primary-color);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 500;
}

.certs-list ul {
    list-style: none;
}

.certs-list li {
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--text-muted);
}

.certs-list i {
    color: var(--accent-color);
}

/* Contact Section */
.contact-container {
    max-width: 600px;
    margin: 0 auto;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
}

.form-group input, .form-group textarea {
    width: 100%;
    padding: 1rem;
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid var(--glass-border);
    border-radius: 8px;
    color: var(--text-color);
    font-family: inherit;
    font-size: 1rem;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.light-theme .form-group input, .light-theme .form-group textarea {
    background: rgba(255, 255, 255, 0.5);
}

.form-group input:focus, .form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(96, 165, 250, 0.2);
}

.contact-form button {
    width: 100%;
    font-size: 1.1rem;
}

.form-status {
    margin-top: 1rem;
    text-align: center;
    font-weight: 500;
}
.form-status.success {
    color: #10b981;
}
.form-status.error {
    color: #ef4444;
}

/* Cookie Banner */
.cookie-banner {
    position: fixed;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    width: 90%;
    max-width: 600px;
    padding: 1.5rem;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 2rem;
    z-index: 9999;
    box-shadow: 0 10px 40px rgba(0,0,0,0.3);
    transition: bottom 0.5s ease, opacity 0.5s ease;
}

.cookie-banner.hidden {
    bottom: -100px;
    opacity: 0;
    pointer-events: none;
}

.cookie-content {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.cookie-content i {
    font-size: 2rem;
    color: var(--accent-color);
}

.cookie-content p {
    font-size: 0.9rem;
    color: var(--text-muted);
}

/* Footer */
footer {
    text-align: center;
    padding: 2rem;
    border-top: 1px solid var(--glass-border);
    margin-top: 4rem;
    color: var(--text-muted);
}

/* Responsive */
@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .hero-section {
        flex-direction: column;
        justify-content: center;
        text-align: center;
        margin-top: 2rem;
    }
    
    .hero-content h1 {
        font-size: 3rem;
    }
    
    .hero-actions {
        justify-content: center;
    }
    
    .hero-image {
        margin-top: 3rem;
    }
    
    .about-grid, .skills-container {
        grid-template-columns: 1fr;
    }
    
    .cookie-banner {
        flex-direction: column;
        text-align: center;
        gap: 1rem;
    }
}