.rum-shell{background:linear-gradient(145deg,#143b31,#1d5948);border:4px solid #d59b2b;border-radius:24px;padding:16px;color:#fff;box-shadow:0 18px 55px #071a1645}
.rum-head{display:flex;align-items:center;justify-content:space-between;gap:14px;margin-bottom:12px}.rum-badge{font-weight:950;letter-spacing:.08em;background:#ef4444;padding:8px 14px;border-radius:999px}.rum-badge.expert{background:#7c3aed}.rum-clock{font-size:2rem;font-weight:950;font-variant-numeric:tabular-nums}.rum-clock.warn{color:#fde047;animation:rumPulse .6s infinite alternate}@keyframes rumPulse{to{transform:scale(1.08)}}
.rum-table{min-height:48vh;background:radial-gradient(circle at 50% 35%,#397c68,#245c4c);border:2px solid #71a997;border-radius:18px;padding:14px;display:flex;flex-wrap:wrap;align-content:flex-start;gap:12px}.rum-meld{min-width:180px;min-height:92px;padding:9px;border:2px dashed #ffffff52;border-radius:14px;display:flex;align-items:center;gap:5px;background:#07251c29}.rum-meld.dragover,.rum-rack.dragover{border-color:#fbbf24;background:#fbbf2426}.rum-meld.solution-target{border-color:#fde047;box-shadow:0 0 0 4px #fde04755}
.rum-rack-wrap{margin-top:13px}.rum-rack-label{font-weight:900;margin-bottom:7px}.rum-rack{min-height:104px;padding:11px;border:3px solid #9a5b24;border-radius:16px;background:linear-gradient(#8a4c1f,#573014);display:flex;align-items:center;justify-content:center;gap:7px}
.rum-tile{position:relative;width:58px;height:78px;flex:0 0 58px;border:1px solid #d8d3c7;border-radius:8px;background:#fffdf5;color:#111;box-shadow:0 4px 8px #0005;display:flex;align-items:center;justify-content:center;font-size:2rem;font-weight:950;cursor:grab;user-select:none}.rum-tile:active{cursor:grabbing}.rum-tile.red{color:#dc2626}.rum-tile.blue{color:#2563eb}.rum-tile.black{color:#111827}.rum-tile.orange{color:#d4a500}.rum-tile.joker{color:#7c3aed;font-size:1.45rem}.rum-tile.moving{outline:5px solid #fde047;transform:translateY(-8px)}
.rum-actions{display:flex;justify-content:center;gap:9px;flex-wrap:wrap;margin-top:13px}.rum-actions button{border:0;border-radius:12px;padding:11px 16px;font-weight:900;cursor:pointer}.rum-submit{background:#16a34a!important;color:#fff}.rum-solution{background:#f59e0b!important;color:#241400}.rum-message{text-align:center;font-size:1.15rem;font-weight:900;min-height:30px;margin-top:9px}.rum-message.bad{color:#fecaca}.rum-message.good{color:#bbf7d0}.rum-step{background:#fff;color:#172033;border-radius:12px;padding:10px 14px;margin-top:10px;text-align:center;font-weight:800}
@media(max-width:800px){.rum-tile{width:46px;height:64px;flex-basis:46px;font-size:1.55rem}.rum-meld{min-width:145px;min-height:76px}.rum-table{min-height:42vh}}
.author-layout{display:grid;grid-template-columns:minmax(310px,36%) 1fr;gap:18px}.author-layout aside,.author-layout section{background:#f6f9fc;border:1px solid #d8e2ec;border-radius:14px;padding:12px}.author-tray{max-height:68vh;overflow:auto;display:grid;grid-template-columns:repeat(6,1fr);gap:5px;padding:8px;background:#dfe9f2;border-radius:12px}.author-tray .rum-tile{width:42px;height:57px;flex-basis:42px;font-size:1.35rem}.author-table{min-height:330px;background:#286451;border-radius:14px;padding:12px;display:flex;flex-wrap:wrap;align-content:flex-start;gap:10px}.author-table .rum-meld{min-width:170px}.author-layout .rum-rack{min-height:92px}@media(max-width:900px){.author-layout{grid-template-columns:1fr}.author-tray{grid-template-columns:repeat(10,1fr);max-height:35vh}}

/* High-contrast playing colors requested for the private play test. */
.rum-tile.red{color:#ff2020}
.rum-tile.blue{color:#006cff}
.rum-tile.orange{color:#ffd400}
.rum-tile.joker{color:#20d85a;text-shadow:0 1px 1px #075d27}
.rum-tile:not(.joker){font-size:2.55rem;letter-spacing:-.06em}
@media(max-width:800px){.rum-tile:not(.joker){font-size:2rem}}