/* --- CSS VARIABLES & RESET --- */
:root {
    --primary-color: #2c3e50;
    --accent-color: #3498db;
    --bg-color: #f8f9fa;
    --text-color: #333;
    --card-bg: #ffffff;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
}

a { text-decoration: none; color: inherit; }
ul { list-style: none; }

/* --- NAVIGATION --- */
nav {
    position: sticky;
    top: 0;
    background: var(--card-bg);
    padding: 1rem 5%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: var(--shadow);
    z-index: 1000;
}

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

.nav-links {
    display: flex;
    gap: 2rem;
}

.nav-links a {
    font-weight: 500;
    transition: var(--transition);
}

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

/* --- HERO SECTION --- */
.hero {
    height: 90vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    background: linear-gradient(135deg, #ece9e6, #ffffff);
    padding: 0 1rem;
}

.hero h1 {
    font-size: 3.5rem;
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.hero p {
    font-size: 1.5rem;
    color: #666;
    margin-bottom: 2rem;
    min-height: 1.6em; /* Prevents layout shift */
}

.typewriter-text {
    color: var(--accent-color);
    font-weight: bold;
}

.social-icons a {
    font-size: 1.8rem;
    margin: 0 10px;
    color: var(--primary-color);
    transition: var(--transition);
}

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

/* --- GENERAL SECTIONS --- */
section {
    padding: 5rem 10%;
}

.section-title {
    text-align: left;
    font-size: 2rem;
    margin-bottom: 3rem;
    color: var(--primary-color);
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 50px;
    height: 3px;
    background: var(--accent-color);
    margin: 10px 0 0;
}

/* --- EXPERIENCE & EDUCATION CARDS --- */
.card-container {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
}

.card {
    background: var(--card-bg);
    padding: 2rem;
    border-radius: 8px;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border-left: 5px solid var(--accent-color);
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 15px rgba(0,0,0,0.1);
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 1rem;
    flex-wrap: wrap;
}

.card-title h3 { font-size: 1.4rem; color: var(--primary-color); }
.card-title h4 { font-size: 1rem; color: #666; font-weight: normal; }
.date { font-size: 0.9rem; color: #888; font-style: italic; }

.card ul {
    list-style-type: disc;
    padding-left: 1.5rem;
    margin-top: 1rem;
}

.card li { margin-bottom: 0.5rem; color: #555; }

/* --- SKILLS --- */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.skill-category h3 {
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.skill-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.skill-tag {
    background: #e1f5fe;
    color: var(--accent-color);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 600;
}

/* --- FOOTER --- */
footer {
    background: var(--primary-color);
    color: white;
    text-align: center;
    padding: 2rem;
    margin-top: 2rem;
}

/* --- MEDIA QUERIES --- */
@media (max-width: 768px) {
    .hero h1 { font-size: 2.5rem; }
    .nav-links { display: none; } /* Simplified for demo, ideally a burger menu */
    .card-header { flex-direction: column; }
    section { padding: 3rem 5%; }
}