/* Global Reset & Font */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f3f4f6;
    color: #1f2937;
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Layout Containers */
.container {
    max-width: 800px;
    margin: 2rem auto;
    padding: 2rem;
    background: #ffffff;
    border-radius: 10px;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.05);
}

/* Typography */
h1, h2, h3 {
    color: #111827; /* Modern dark gray, highly readable on light backgrounds */
    margin-bottom: 0.5rem;
}


p {
    margin-bottom: 1.2rem;
}

a {
    color: #3b82f6;
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

/* Header */
header {
    background-color: #1e3a8a;
    color: white;
    text-align: center;
    padding: 2rem 1rem;
}

header h1 {
    font-size: 2rem;
    margin-bottom: 0.25rem;
}

/* Navigation */
nav {
    background: #ffffff;
    text-align: center;
    padding: 1rem;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

nav a {
    margin: 0 1rem;
    font-weight: 500;
    color: #1f2937;
}

/* Footer (Sticky) */
footer {
    margin-top: auto;
    background: #f9fafb;
    padding: 1.5rem 1rem;
    text-align: center;
    font-size: 0.9em;
    color: #6b7280;
    border-top: 1px solid #e5e7eb;
}