:root {
    /* Theme: Space/Nebula (Default) */
    --bg-color: #050505;
    --accent-primary: #6366f1;
    --accent-secondary: #a855f7;
    --text-primary: #ffffff;
    --text-secondary: #94a3b8;
    --card-bg: rgba(255, 255, 255, 0.05);
    --card-border: rgba(255, 255, 255, 0.1);
    --glow-color: rgba(99, 102, 241, 0.2);
    --font-main: 'Outfit', sans-serif;
    --transition-speed: 0.3s;
}

[data-theme="deep-purple"] {
    --bg-color: #1a0b2e;
    --accent-primary: #d946ef;
    --accent-secondary: #8b5cf6;
    --text-primary: #ffffff;
    --text-secondary: #c084fc;
    --card-bg: rgba(217, 70, 239, 0.05);
    --card-border: rgba(217, 70, 239, 0.2);
    --glow-color: rgba(217, 70, 239, 0.2);
}

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

body {
    background-color: var(--bg-color);
    color: var(--text-primary);
    font-family: var(--font-main);
    overflow-x: hidden;
    min-height: 100vh;
    transition: background-color 0.5s ease;
}

/* Background Nebula Effect */
.nebula-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    background: radial-gradient(circle at 50% 50%, var(--glow-color), transparent 70%);
    filter: blur(80px);
    pointer-events: none;
    opacity: 0.6;
}

/* Typography */
h1, h2, h3 {
    font-weight: 700;
    letter-spacing: -0.02em;
}

p {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Glassmorphism Components */
.glass-card {
    background: var(--card-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--card-border);
    border-radius: 24px;
    padding: 2rem;
    box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
}

/* Layout Containers */
.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 4rem 2rem;
}

/* Navigation Buttons */
.nav-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    margin-top: 3rem;
}

.nav-item {
    text-decoration: none;
    color: inherit;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    padding: 2rem;
    transition: transform var(--transition-speed), border-color var(--transition-speed);
}

.nav-item:hover {
    transform: translateY(-5px);
    border-color: var(--accent-primary);
    background: rgba(255, 255, 255, 0.08);
}

.nav-item i {
    font-size: 2rem;
    color: var(--accent-primary);
}

/* Theme Switcher */
.theme-switcher {
    position: fixed;
    top: 2rem;
    right: 2rem;
    display: flex;
    gap: 1rem;
    z-index: 100;
}

.theme-btn {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: 2px solid var(--card-border);
    cursor: pointer;
    transition: transform 0.2s;
}

.theme-btn:hover {
    transform: scale(1.1);
}

.btn-nebula { background: linear-gradient(45deg, #6366f1, #a855f7); }
.btn-purple { background: linear-gradient(45deg, #d946ef, #8b5cf6); }

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

.animate-fade-in {
    animation: fadeIn 0.8s ease-out forwards;
}

/* Profile Section */
.profile-section {
    margin-top: 3rem;
    text-align: left;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.profile-header {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    margin-bottom: 1rem;
}

.profile-img {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    background: var(--accent-primary);
    border: 3px solid var(--card-border);
    object-fit: cover;
}

.social-links {
    display: flex;
    gap: 1rem;
    margin-top: 1rem;
}

.social-btn {
    width: 45px;
    height: 45px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 12px;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    color: var(--text-primary);
    text-decoration: none;
    transition: all 0.3s;
}

.social-btn:hover {
    background: var(--accent-primary);
    transform: translateY(-3px);
    box-shadow: 0 5px 15px var(--glow-color);
}

.contact-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-top: 1rem;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.contact-item i {
    color: var(--accent-primary);
}

/* Responsive */
@media (max-width: 768px) {
    .container { padding: 2rem 1rem; }
    .glass-card { padding: 1.5rem; }
    .profile-header { flex-direction: column; text-align: center; }
}