:root {
    --bg-color: #0f172a; /* Dark slate 900 */
    --text-color: #e2e8f0; /* Slate 200 */
    --accent-color: #2dd4bf; /* Teal 400 */
    --accent-hover: #14b8a6; /* Teal 500 */
    --card-bg: #1e293b; /* Slate 800 */
    --card-hover: #334155; /* Slate 700 */
    --muted-color: #94a3b8; /* Slate 400 */
    --container-width: 1000px;
    --transition-speed: 0.3s;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 2rem;
}

.section {
    padding: 3rem 0;
}

.section-title {
    font-size: 2rem;
    margin-bottom: 2rem;
    position: relative;
    display: inline-block;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 0;
    width: 3rem;
    height: 3px;
    background-color: var(--accent-color);
}

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

/* Navigation */
nav {
    padding: 1.5rem 0;
    position: sticky;
    top: 0;
    background-color: rgba(15, 23, 42, 0.9);
    backdrop-filter: blur(10px);
    z-index: 100;
}

nav .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--accent-color);
}

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

nav a {
    text-decoration: none;
    color: var(--text-color);
    font-weight: 500;
    font-size: 0.9rem;
    transition: color var(--transition-speed);
}

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

/* Hero Section */
.hero-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 4rem;
    align-items: center;
}

h1 {
    font-size: 3.5rem;
    line-height: 1.1;
    margin-bottom: 1rem;
}

.subtitle {
    font-size: 1.25rem;
    color: var(--muted-color);
    margin-bottom: 2rem;
}

.description {
    font-size: 1.1rem;
    margin-bottom: 2.5rem;
    max-width: 600px;
}

.social-links {
    display: flex;
    gap: 1.5rem;
}

.social-links a {
    color: var(--text-color);
    transition: color var(--transition-speed), transform var(--transition-speed);
}

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

.curved-square {
    width: 100%;
    max-width: 350px;
    aspect-ratio: 1;
    object-fit: cover;
    border-radius: 4rem 1rem 4rem 1rem; /* The curved square look */
    border: 4px solid var(--accent-color);
    box-shadow: 20px 20px 0 var(--card-bg);
}

/* Cards & Grid Styles */
.card {
    background-color: var(--card-bg);
    padding: 2rem;
    border-radius: 1rem;
    transition: transform var(--transition-speed), background-color var(--transition-speed);
}

.card:hover {
    background-color: var(--card-hover);
    transform: translateY(-5px);
}

/* Skills */
.skill-icons {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: 1.5rem;
}

.skill-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.75rem;
    padding: 1.5rem;
    background-color: var(--card-bg);
    border-radius: 1rem;
    transition: transform var(--transition-speed), background-color var(--transition-speed), border-color var(--transition-speed);
    border: 1px solid rgba(255, 255, 255, 0.05);
    text-align: center;
}

.skill-item i {
    font-size: 2.5rem;
    transition: color var(--transition-speed);
}

.skill-item:hover {
    background-color: var(--card-hover);
    transform: translateY(-5px);
    border-color: var(--accent-color);
}

.skill-item:hover i {
    color: var(--accent-color);
}

.skill-item span {
    font-size: 0.9rem;
    font-weight: 500;
}

/* Experience */
.experience-card h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.date {
    color: var(--accent-color);
    font-weight: 500;
    font-size: 0.9rem;
}

/* Timeline */
.timeline {
    position: relative;
    max-width: 800px;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 7px;
    top: 0;
    width: 2px;
    height: 100%;
    background-color: var(--card-bg);
}

.timeline-item {
    padding-left: 2.5rem;
    margin-bottom: 3rem;
    position: relative;
}

.timeline-dot {
    position: absolute;
    left: 0;
    top: 8px;
    width: 16px;
    height: 16px;
    background-color: var(--accent-color);
    border-radius: 50%;
}

.institution {
    font-weight: 600;
    margin: 0.25rem 0;
}

/* Leadership Grid */
.leadership-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
}

.leadership-grid .role {
    color: var(--muted-color);
    margin-bottom: 0.5rem;
}

/* Footer & Contact */
footer {
    background-color: #020617; /* Darker slate */
    padding: 4rem 0 2rem 0;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    margin-bottom: 4rem;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    font-size: 1.1rem;
}

.contact-item a {
    color: var(--text-color);
    text-decoration: none;
    transition: color var(--transition-speed);
}

.contact-item a:hover {
    color: var(--accent-color);
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-bottom p {
    color: var(--muted-color);
    font-size: 0.9rem;
}

/* Responsive */
@media (max-width: 768px) {
    .hero-grid {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 2rem;
    }
    
    .hero-content {
        order: 2;
    }
    
    .hero-image {
        order: 1;
    }
    
    h1 {
        font-size: 2.5rem;
    }
    
    .social-links {
        justify-content: center;
    }
    
    .curved-square {
        max-width: 250px;
        margin: 0 auto;
    }
    
    nav ul {
        display: none; /* In a real app we'd add a mobile menu */
    }
}