* { box-sizing: border-box; }
body { margin: 0; font-family: system-ui, Arial, sans-serif; background: #0f1220; color: #e8ecf1; }
header { display: flex; justify-content: space-between; align-items: center; padding: 14px 24px; background: #171b2e; border-bottom: 1px solid #262b45; flex-wrap: wrap; gap: 12px; }
header h1 { margin: 0; font-size: 22px; }
.tab-btn { background: #222842; color: #cfd6e4; border: 1px solid #333b60; padding: 8px 16px; border-radius: 8px; cursor: pointer; margin-left: 8px; }
.tab-btn.active { background: #4c7dff; color: #fff; border-color: #4c7dff; }
main { max-width: 1000px; margin: 24px auto; padding: 0 16px; }
.tab { display: none; } .tab.active { display: block; }
.game-wrap { display: flex; gap: 24px; flex-wrap: wrap; }
canvas { background: #dfeaf7; border-radius: 12px; box-shadow: 0 10px 30px #0006; }
.side { min-width: 220px; } .side ol { padding-left: 20px; } .side li { margin: 4px 0; }
.hint { color: #93a0bd; margin-top: 12px; }
.stats { display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 20px; }
.stats div { background: #171b2e; border: 1px solid #262b45; border-radius: 10px; padding: 10px 14px; font-size: 14px; }
.stats b { color: #7fa6ff; font-size: 18px; }
#review-form { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 12px; background: #171b2e; padding: 16px; border-radius: 12px; border: 1px solid #262b45; }
#review-form input, #review-form select, #review-form textarea { padding: 10px; border-radius: 8px; border: 1px solid #333b60; background: #0f1220; color: #e8ecf1; font-size: 14px; }
#review-form input { grid-column: 1 / 2; }
#review-form textarea { grid-column: 1 / -1; min-height: 70px; resize: vertical; }
#review-form button { grid-column: 1 / -1; padding: 12px; border: none; border-radius: 8px; background: #4c7dff; color: #fff; font-size: 16px; cursor: pointer; }
#review-form button:hover { background: #3a67e0; }
.msg { grid-column: 1 / -1; margin: 0; min-height: 20px; }
.msg.ok { color: #57d38c; } .msg.err { color: #ff6b6b; }
#reviews-list { display: grid; gap: 10px; margin-top: 12px; }
.review-card { background: #171b2e; border: 1px solid #262b45; border-radius: 10px; padding: 12px 14px; }
.review-card .who { font-weight: 700; color: #7fa6ff; }
.review-card .marks { color: #93a0bd; font-size: 13px; margin-left: 8px; }
.review-card p { margin: 6px 0 0; }