:root{--bg-color:#0f172a;--text-color:#f8fafc;--primary-color:#3b82f6;--secondary-color:#64748b;--card-bg:#ffffff0d;--card-border:#ffffff1a}body{background-color:var(--bg-color);color:var(--text-color);justify-content:center;align-items:center;height:100vh;margin:0;padding:0;font-family:Inter,system-ui,-apple-system,sans-serif;display:flex}.lobby-container{background:var(--card-bg);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border:1px solid var(--card-border);text-align:center;border-radius:16px;padding:3rem;animation:.5s ease-out fadeIn;box-shadow:0 20px 25px -5px #00000080}.title{background:linear-gradient(90deg,#38bdf8,#818cf8);-webkit-text-fill-color:transparent;-webkit-background-clip:text;margin-bottom:2rem;font-size:2.5rem}button{cursor:pointer;border:none;border-radius:8px;padding:.75rem 1.5rem;font-size:1rem;font-weight:600;transition:all .2s}.btn-primary{background-color:var(--primary-color);color:#fff;width:100%;margin-bottom:1.5rem}.btn-primary:hover{background-color:#2563eb;transform:translateY(-2px)}.join-section{gap:.5rem;display:flex}input{border:1px solid var(--card-border);color:#fff;background:#0003;border-radius:8px;outline:none;flex:1;padding:.75rem;font-size:1rem}input:focus{border-color:var(--primary-color)}.btn-secondary{background-color:var(--secondary-color);color:#fff}.btn-secondary:hover{background-color:#475569}.game-container{box-sizing:border-box;flex-direction:column;justify-content:space-between;width:100vw;height:100vh;padding:2rem;display:flex}.game-board{flex-direction:column;flex:1;align-items:center;padding:1rem 0;display:flex;position:relative}.game-board .btn-primary{width:auto;margin-bottom:0}.my-hand{justify-content:center;gap:1rem;display:flex}.card{color:#1e293b;cursor:pointer;background:#fff;border-radius:8px;justify-content:center;align-items:center;width:80px;height:120px;font-size:1.2rem;font-weight:700;transition:transform .2s;display:flex;box-shadow:0 4px 6px -1px #0000001a}.card:hover{transform:translateY(-10px)}.Hearts,.Diamonds{color:#ef4444}.Spades,.Clubs{color:#0f172a}.Joker{color:#8b5cf6}@keyframes fadeIn{0%{opacity:0;transform:scale(.95)}to{opacity:1;transform:scale(1)}}.toast{color:#fff;z-index:1000;background-color:#ef4444;border-radius:8px;padding:1rem 2rem;animation:.3s ease-out slideDown;position:fixed;top:20px;left:50%;transform:translate(-50%);box-shadow:0 4px 6px -1px #0000001a}@keyframes slideDown{0%{opacity:0;top:-50px}to{opacity:1;top:20px}}.game-over-overlay{-webkit-backdrop-filter:blur(5px);backdrop-filter:blur(5px);z-index:500;background:#000000b3;justify-content:center;align-items:center;width:100vw;height:100vh;display:flex;position:fixed;top:0;left:0}.game-over-modal{background:var(--card-bg);border:1px solid var(--card-border);text-align:center;border-radius:16px;padding:3rem;animation:.5s ease-out fadeIn;box-shadow:0 20px 25px -5px #000c}.trick-history-container{justify-content:center;gap:.5rem;min-width:200px;min-height:120px;margin:auto 0;display:flex;position:relative}.trick-play{top:calc(var(--offset) * 20px);left:calc(var(--offset) * 20px);z-index:var(--offset);gap:.5rem;transition:all .3s cubic-bezier(.4,0,.2,1);display:flex;position:absolute}.trick-history-container:hover .trick-play{position:relative;top:0;left:0}.deck-container{perspective:1000px;position:absolute;top:50%;right:50px;transform:translateY(-50%)}.deck-stack{transform-style:preserve-3d}@media (width<=768px){.deck-container{transform-origin:100% 0;top:20px;right:10px;transform:scale(.6)}}.opponent-area{flex-direction:column;align-items:center;gap:1rem;margin-bottom:2rem;display:flex}.opponent-hand-visual{justify-content:center;align-items:center;width:100%;height:60px;display:flex;position:relative}.card-back-mini{background:linear-gradient(135deg,#1e3c72 0%,#2a5298 100%);border:2px solid #fff;border-radius:4px;width:40px;height:60px;transition:transform .3s;position:absolute;box-shadow:-2px 0 5px #0000004d}