/* Global Reset & Typography */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    scroll-behavior: smooth;
}

body {
    background-color: #f7f9fb;
    color: #333;
    line-height: 1.6;
}

/* Header & Navigation */
header {
    background-color: #ffffff;
    border-bottom: 2px solid #0056b3;
    position: sticky;
    top: 0;
    z-index: 1000;
    padding: 1rem 2rem;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.logo-container {
    margin-bottom: 1rem;
}

.main-logo {
    max-width: 280px;
    height: auto;
}

nav ul {
    display: flex;
    list-style: none;
    gap: 1.5rem;
    flex-wrap: wrap;
    justify-content: center;
}

nav a {
    text-decoration: none;
    color: #0056b3;
    font-weight: 600;
    font-size: 1.1rem;
    transition: color 0.2s;
}

nav a:hover {
    color: #003366;
}

/* Sections */
.section {
    max-width: 1100px;
    margin: 3rem auto;
    padding: 2rem;
    background: #ffffff;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.05);
}

.section h2 {
    color: #0056b3;
    border-bottom: 2px solid #e2e8f0;
    padding-bottom: 0.5rem;
    margin-bottom: 1.5rem;
    font-size: 2rem;
}

/* Hero elements */
.hero {
    text-align: center;
    padding: 2rem 0;
    background: linear-gradient(135deg, #e0f2fe 0%, #bae6fd 100%);
    border-radius: 6px;
    margin-bottom: 2rem;
}

.hero h1 {
    color: #0369a1;
}

/* Layout Grid */
.grid-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
}

.card {
    background: #f8fafc;
    border: 1px solid #e2e8f0;
    border-radius: 6px;
    padding: 1.5rem;
}

.card h3 {
    color: #0369a1;
    margin-bottom: 0.5rem;
}

.full-width {
    grid-column: 1 / -1;
}

/* Images */
.writer-img {
    width: 100%;
    max-width: 300px;
    height: auto;
    border-radius: 6px;
    margin: 1rem 0;
    display: block;
}

/* Directory & Sub-tabs lists */
.sub-tabs, .directory-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    margin-top: 1rem;
}

.directory-list {
    list-style: inside square;
    padding: 1rem;
    color: #334155;
}

/* Utilities */
.text-center { text-align: center; }
.badge {
    background: #64748b;
    color: white;
    font-size: 0.8rem;
    padding: 0.2rem 0.6rem;
    border-radius: 12px;
    vertical-align: middle;
}
.muted { opacity: 0.7; }

/* Footer */
footer {
    text-align: center;
    padding: 2rem;
    background: #0f172a;
    color: #94a3b8;
    margin-top: 4rem;
}