:root {
    --primary-color: #2563eb;
    --text-color: #1f2937;
    --bg-color: #f9fafb;
    --section-bg: #ffffff;
}

* {
    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;
}

header {
    background-color: var(--section-bg);
    padding: 2rem 5%;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    text-align: center;
}

header h1 {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

header p {
    font-size: 1.2rem;
    color: #4b5563;
}

nav {
    margin-top: 1.5rem;
}

nav a {
    text-decoration: none;
    color: var(--text-color);
    margin: 0 1rem;
    font-weight: 600;
    transition: color 0.3s;
}

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

.container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 2rem;
}

section {
    background-color: var(--section-bg);
    margin-bottom: 2rem;
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.05);
}

h2 {
    color: var(--primary-color);
    margin-bottom: 1rem;
    border-bottom: 2px solid #e5e7eb;
    padding-bottom: 0.5rem;
}

.skills-list {
    padding: 0.5rem 0;
}

.skills-list p {
    margin-bottom: 0.8rem;
    font-size: 1.05rem;
}

.skills-list strong {
    color: #111827; 
    font-weight: 600;
}

.project {
    margin-bottom: 1.5rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid #e5e7eb;
}

.project:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.project h3 {
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
}

.btn {
    display: inline-block;
    background-color: var(--primary-color);
    color: white;
    padding: 0.5rem 1rem;
    text-decoration: none;
    border-radius: 4px;
    margin-top: 1rem;
    transition: background-color 0.3s;
}

.btn:hover {
    background-color: #1d4ed8;
}

footer {
    text-align: center;
    padding: 2rem;
    color: #6b7280;
    font-size: 0.9rem;
}