:root {
    color-scheme: light;
}

.handbook-body {
    margin: 0;
    background: var(--light-gray);
    color: var(--text-primary);
    font-family: 'Poppins', sans-serif;
}

/* Navbar already styled in main.css; only small tweaks here if needed */
.navbar {
    position: sticky;
    top: 0;
    z-index: var(--z-sticky);
    background: #fff;
    box-shadow: var(--shadow-sm);
}

.handbook-main {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem 1.5rem 3rem;
}

.handbook-hero {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 1rem;
    align-items: center;
    margin-bottom: 2rem;
}

.hero-kicker {
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--medium-gray);
    font-size: 0.9rem;
    margin: 0 0 0.25rem;
}

.handbook-hero h1 {
    margin: 0 0 0.5rem;
    font-size: 2rem;
}

.hero-body {
    margin: 0;
    color: var(--medium-gray);
    line-height: 1.5;
}

.hero-note {
    background: #fff;
    padding: 1rem;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
}

.handbook-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1rem;
}

.handbook-card {
    background: #fff;
    border-radius: var(--radius-md);
    padding: 1.25rem;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
}

.handbook-card.detail {
    max-width: 880px;
    margin: 0 auto;
}

.kicker {
    margin: 0;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--medium-gray);
    font-size: 0.8rem;
}

.handbook-card h1 {
    margin: 0.35rem 0 0.5rem;
    font-size: 1.75rem;
    color: var(--text-primary);
}

.handbook-card h2 {
    margin: 0.35rem 0 0.5rem;
    font-size: 1.25rem;
    color: var(--text-primary);
}

.card-body {
    margin: 0 0 0.75rem;
    color: var(--medium-gray);
}

.todo-list {
    margin: 0 0 0.75rem 1.1rem;
    color: var(--text-primary);
    padding-left: 0.5rem;
}

.handbook-subsection {
    margin-top: 0.75rem;
    padding-top: 0.5rem;
    border-top: 1px dashed var(--border-color);
}

.handbook-subsection h3 {
    margin: 0 0 0.25rem;
    font-size: 1rem;
}

.handbook-subsection p {
    margin: 0;
    color: var(--medium-gray);
}

.card-link {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    margin-top: 0.5rem;
    padding: 0.5rem 0.75rem;
    border-radius: var(--radius-sm);
    background: var(--light-pink);
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 600;
    transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.2s ease;
}

.card-link:hover {
    background: #ffd9e7;
    transform: translateY(-1px);
    box-shadow: var(--shadow-sm);
    text-decoration: none;
}

.back-link {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    margin-bottom: 1rem;
    color: var(--medium-gray);
    text-decoration: none;
    font-weight: 600;
}

.back-link:hover {
    color: var(--primary-pink);
    text-decoration: none;
}

@media (max-width: 640px) {
    .handbook-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }

    .handbook-nav {
        flex-wrap: wrap;
        justify-content: flex-start;
    }
}