:root {
    --bg: #0d1117;
    --bg-card: #161b22;
    --bg-hover: #21262d;
    --text: #c9d1d9;
    --text-muted: #8b949e;
    --accent: #58a6ff;
    --accent-hover: #79c0ff;
    --success: #3fb950;
    --error: #f85149;
    --warning: #d2991d;
    --border: #30363d;
    --radius: 8px;
}

[data-theme="light"] {
    --bg: #ffffff;
    --bg-card: #f6f8fa;
    --bg-hover: #eaeef2;
    --text: #24292f;
    --text-muted: #656d76;
    --accent: #0969da;
    --accent-hover: #0550ae;
    --success: #1a7f37;
    --error: #cf222e;
    --warning: #9a6700;
    --border: #d0d7de;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    min-height: 100vh;
}
.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-hover); }
img { max-width: 100%; border-radius: var(--radius); }

/* Кнопки */
.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 6px;
    padding: 8px 16px; border-radius: var(--radius); font-size: 0.9rem; font-weight: 500;
    cursor: pointer; border: 1px solid var(--border); background: var(--bg-card);
    color: var(--text); transition: all 0.2s; white-space: nowrap;
}
.btn:hover { background: var(--bg-hover); }
.btn-primary { background: var(--accent); color: #fff; border-color: var(--accent); }
.btn-primary:hover { background: var(--accent-hover); }
.btn-danger { background: var(--error); color: #fff; border-color: var(--error); }
.btn-sm { padding: 4px 10px; font-size: 0.8rem; }
.btn-block { width: 100%; }

/* Шапка */
.header {
    background: var(--bg-card); border-bottom: 1px solid var(--border);
    position: sticky; top: 0; z-index: 100; padding: 12px 0;
}
.header__inner {
    display: flex; align-items: center; justify-content: space-between;
    gap: 16px; flex-wrap: wrap;
}
.logo { font-size: 1.4rem; font-weight: 700; color: var(--text); }
.logo span { color: var(--accent); }
.nav { display: flex; gap: 4px; flex-wrap: wrap; }
.nav a {
    padding: 6px 12px; border-radius: var(--radius); color: var(--text-muted);
    font-size: 0.9rem; transition: all 0.2s;
}
.nav a:hover, .nav a.active { background: var(--bg-hover); color: var(--text); }
.actions { display: flex; align-items: center; gap: 8px; }
.icon-btn {
    width: 36px; height: 36px; border-radius: 50%; border: 1px solid var(--border);
    background: var(--bg); color: var(--text); cursor: pointer;
    display: flex; align-items: center; justify-content: center; font-size: 1rem;
}
.icon-btn:hover { background: var(--bg-hover); }
.cart-icon { position: relative; color: var(--text); font-size: 1.2rem; }
.cart-icon span {
    position: absolute; top: -6px; right: -8px; background: var(--accent);
    color: #fff; font-size: 0.65rem; padding: 1px 5px; border-radius: 10px;
}

/* Сетки */
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 16px; }
.card {
    background: var(--bg-card); border: 1px solid var(--border);
    border-radius: var(--radius); padding: 16px; transition: all 0.2s;
}
.card:hover { border-color: var(--accent); box-shadow: 0 4px 12px rgba(0,0,0,0.2); }
.card img { width: 100%; height: 200px; object-fit: contain; background: #fff; border-radius: 6px; margin-bottom: 12px; background: #fff; }
.card h3 { font-size: 0.9rem; margin-bottom: 8px; min-height: 40px; }
.price { font-size: 1.1rem; font-weight: 700; color: var(--accent); margin-bottom: 8px; }
.old-price { text-decoration: line-through; color: var(--text-muted); font-size: 0.85rem; margin-left: 6px; }
.badge {
    position: absolute; top: 10px; right: 10px; background: var(--error);
    color: #fff; padding: 2px 8px; border-radius: 4px; font-size: 0.7rem;
}

/* Формы */
.form-group { margin-bottom: 14px; }
.form-group label { display: block; margin-bottom: 4px; color: var(--text-muted); font-size: 0.85rem; }
.form-input {
    width: 100%; padding: 8px 12px; border: 1px solid var(--border);
    border-radius: var(--radius); background: var(--bg); color: var(--text);
    font-size: 0.9rem; transition: border-color 0.2s;
}
.form-input:focus { outline: none; border-color: var(--accent); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }

/* Сообщения */
.message {
    padding: 12px; border-radius: var(--radius); margin: 12px 0;
    font-size: 0.9rem; display: none;
}
.message.success { background: rgba(63,185,80,0.1); border: 1px solid var(--success); color: var(--success); display: block; }
.message.error { background: rgba(248,81,73,0.1); border: 1px solid var(--error); color: var(--error); display: block; }

/* Таблицы */
.table { width: 100%; border-collapse: collapse; }
.table th, .table td { padding: 10px 12px; text-align: left; border-bottom: 1px solid var(--border); font-size: 0.9rem; }
.table th { color: var(--text-muted); font-weight: 500; }

/* Модалка */
.modal {
    display: none; position: fixed; top: 0; left: 0; width: 100%; height: 100%;
    background: rgba(0,0,0,0.6); z-index: 9999; align-items: center; justify-content: center;
}
.modal-content {
    background: var(--bg-card); border: 1px solid var(--border);
    border-radius: 12px; padding: 24px; max-width: 500px; width: 90%;
    max-height: 80vh; overflow-y: auto;
}

/* Админка */
.admin-grid { display: grid; grid-template-columns: 220px 1fr; gap: 20px; }
.admin-sidebar { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius); padding: 16px; }
.admin-sidebar a { display: block; padding: 8px 12px; border-radius: var(--radius); color: var(--text-muted); cursor: pointer; margin-bottom: 4px; }
.admin-sidebar a:hover, .admin-sidebar a.active { background: var(--bg-hover); color: var(--text); }
.admin-content { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px; }
.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 12px; margin-bottom: 20px; }
.stat-card { background: var(--bg); border: 1px solid var(--border); border-radius: var(--radius); padding: 16px; text-align: center; }
.stat-card h3 { font-size: 1.5rem; color: var(--accent); }
.stat-card p { color: var(--text-muted); font-size: 0.85rem; margin-top: 4px; }

/* Чат */
.chat-btn {
    position: fixed; bottom: 24px; right: 24px; width: 50px; height: 50px;
    border-radius: 50%; background: var(--accent); color: #fff; border: none;
    cursor: pointer; font-size: 1.3rem; z-index: 998; box-shadow: 0 4px 16px rgba(88,166,255,0.3);
}
.chat-btn:hover { transform: scale(1.05); }
.chat-box {
    position: fixed; bottom: 90px; right: 24px; width: 340px; max-height: 450px;
    background: var(--bg-card); border: 1px solid var(--border); border-radius: 12px;
    box-shadow: 0 8px 32px rgba(0,0,0,0.4); z-index: 999; display: none; flex-direction: column;
}
.chat-head { padding: 12px 16px; background: var(--accent); color: #fff; border-radius: 12px 12px 0 0; display: flex; justify-content: space-between; }
.chat-body { flex: 1; padding: 12px; overflow-y: auto; max-height: 250px; font-size: 0.9rem; }
.chat-foot { display: flex; padding: 10px; gap: 8px; border-top: 1px solid var(--border); }
.chat-foot input { flex: 1; padding: 8px 12px; border: 1px solid var(--border); border-radius: 20px; background: var(--bg); color: var(--text); }

/* Футер */
.footer { background: var(--bg-card); border-top: 1px solid var(--border); padding: 24px 0; margin-top: 40px; text-align: center; color: var(--text-muted); font-size: 0.85rem; }

@media (max-width: 768px) {
    .header__inner { flex-direction: column; }
    .nav { justify-content: center; }
    .admin-grid { grid-template-columns: 1fr; }
    .form-row { grid-template-columns: 1fr; }
}