:root {
    --bg: #f4f7fb;
    --card: #ffffff;
    --text: #1f2430;
    --muted: #5d6778;
    --brand: #1e8e5a;
    --brand-dark: #176f47;
    --line: #dbe2eb;
}

* { box-sizing: border-box; }
body {
    margin: 0;
    font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(180deg, #eef3fb 0%, #f8fafd 60%, #f4f7fb 100%);
    color: var(--text);
}
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}
.site-header {
    background: #0f1724;
    border-bottom: 3px solid var(--brand);
}
.header-row {
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.logo {
    color: #fff;
    text-decoration: none;
    font-weight: 700;
    letter-spacing: 0.4px;
}
nav a {
    color: #d9e4f3;
    margin-left: 1rem;
    text-decoration: none;
}
.page-shell {
    display: grid;
    grid-template-columns: 220px 1fr;
    gap: 1.2rem;
    padding-top: 1rem;
    padding-bottom: 2rem;
}
.sidebar {
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: 10px;
    padding: 1rem;
    height: fit-content;
}
.sidebar h3 { margin-top: 0; }
.sidebar ul {
    list-style: none;
    padding: 0;
    margin: 0;
}
.sidebar li + li { margin-top: 0.5rem; }
.sidebar a {
    color: #2f3d56;
    text-decoration: none;
}
.hero {
    padding: 1.5rem;
    border-radius: 12px;
    background: radial-gradient(circle at 80% 20%, #80d3a6 0%, #4db17c 40%, #208157 100%);
    color: #fff;
    margin-bottom: 1rem;
}
.search-form,
.filter-form {
    display: flex;
    gap: 0.6rem;
    flex-wrap: wrap;
}
input, select, textarea, button {
    font: inherit;
    padding: 0.6rem 0.7rem;
    border-radius: 8px;
    border: 1px solid var(--line);
}
button,
.button {
    background: var(--brand);
    color: #fff;
    border: none;
    text-decoration: none;
    display: inline-block;
    cursor: pointer;
}
button:hover,
.button:hover { background: var(--brand-dark); }
.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 0.9rem;
}
.addon-card {
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: 10px;
    overflow: hidden;
}
.addon-card img {
    width: 100%;
    aspect-ratio: 16 / 9;
    object-fit: cover;
    display: block;
    background: #e8edf6;
}
.addon-body {
    padding: 0.8rem;
}
.addon-body h3 {
    margin: 0 0 0.4rem;
    font-size: 1rem;
}
.addon-body p {
    margin: 0 0 0.6rem;
    color: var(--muted);
    font-size: 0.9rem;
}
.addon-details {
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: 12px;
    padding: 1rem;
}
.details-head {
    display: grid;
    grid-template-columns: minmax(250px, 360px) 1fr;
    gap: 1rem;
}
.details-head img {
    width: 100%;
    border-radius: 10px;
    border: 1px solid var(--line);
}
.meta-list {
    list-style: none;
    padding: 0;
    margin: 0 0 1rem;
}
.meta-list li { margin-bottom: 0.3rem; color: var(--muted); }
.toolbar,
.section-title-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 0.8rem;
}
.site-footer {
    border-top: 1px solid var(--line);
    background: #fff;
    padding: 1rem 0;
    color: var(--muted);
    font-size: 0.9rem;
}

@media (max-width: 900px) {
    .page-shell { grid-template-columns: 1fr; }
    .details-head { grid-template-columns: 1fr; }
}