*{margin:0;padding:0;box-sizing:border-box;}:root{--bg-color:#666666;--text-color:#e63333;--back-circle:rgb(103, 43, 103);--border-quart:white;--quarter-opacity:0.90;--quarter-opacity-hover:1;}body{background-color:var(--bg-color);min-height:100vh;display:grid;place-items:start center;padding-top:24px;}h1{color:#ffffff;text-align:center;margin-bottom:15px;}a{text-decoration:none;color:var(--border-quart);}.circle{position:relative;width:350px;height:350px;margin:12px  auto 40px;border-radius:50%;overflow:hidden;background:radial-gradient(ellipse at center, #2a2a2a 0%, #1e1e1e 70%, #151515 100%);box-shadow:0 0 10px rgba(0, 0, 0, 0,5);border:2px solid rgba(255,255,255,0.15);}.quarter{position:absolute;width:50%;height:50%;display:flex;align-items:center;justify-content:center;font-weight:bold;color:var(--border-quart);text-shadow:0 1px 2px rgba(0, 0, 0, 0.6);background:var(--back-circle);opacity:var(--quarter-opacity);transition:opacity 180ms, filter 180ms ease ;}.quarter:hover{opacity:var(--quarter-opacity-hover);filter:brightness(1.1);}.top-left{top:0;left:0;background:var(--back-circle);border-top-left-radius:100%;opacity:0,5;}.top-right{top:0;right:0;background:var(--back-circle) ;border-top-right-radius:100%;}.bottom-left{bottom:0;left:0;background:var(--back-circle);border-bottom-left-radius:100%;}.bottom-right{bottom:0;right:0;background:var(--back-circle);border-bottom-right-radius:100%;}.hand{position:absolute;left:50%;bottom:50%;transform-origin:bottom center;transform:translate(-50%, 0) rotate(0deg);background:black;border-radius:999px;box-shadow:0 0 2px rgba(0,0,0,0.6);}.hand.hour{width:5px;height:80px;opacity:0.75;}.hand.minute{width:3px;height:110px;opacity:0.75;}.center-cap{position:absolute;left:50%;top:50%;width:15px;height:15px;transform:translate(-50%,-50%);background:rgb(223, 210, 36);border-radius:50%;box-shadow:inset 0 0 3px rgba(0,0,0,0.6);pointer-events:none;}.timer-wrap{display:grid;place-items:center;margin-top:12px;}.timer-card{width:min(540px, 92vw);border-radius:18px;padding:20px;background:radial-gradient(ellipse at center, #2a2a2a 0%, #1e1e1e 70%, #151515 100%);border:2px solid rgba(255,255,255,0.15);box-shadow:0 2px 8px rgba(0,0,0,0.35);color:var(--border-quart);}.time-display{font-variant-numeric:tabular-nums;font-weight:700;font-size:clamp(40px, 10vw, 72px);text-align:center;margin:8px 0 16px;color:var(--border-quart);text-shadow:0 1px 2px rgba(0, 0, 0, 0.6);}.controls-row,.actions-row{display:flex;align-items:center;gap:14px;justify-content:space-between;margin:12px 0;flex-wrap:wrap;}.arrows{display:flex; flex-direction: column; gap:8px;}.btn{appearance:none;border:none;padding:10px 14px;border-radius:12px;font-weight:700;cursor:pointer;transition:transform 120ms ease, filter 120ms ease, background 120ms ease;background:#2b2b2b;color:var(--border-quart);box-shadow:0 1px 3px rgba(0,0,0,0.3), inset 0 0 0 1px rgba(255,255,255,0.08);}.btn:hover{filter: brightness(1.05); transform:translateY(-1px);}.btn:active{transform:translateY(0);}.primary{background:var(--back-circle);}.ghost{background:transparent; border:1px solid rgba(255,255,255,0.2);}.danger{background:var(--text-color);}.arrow{width:48px;height:42px;font-size:18px;line-height:1;display:grid;place-items:center;}.arrow.green{background:#1d6d3d;}.arrow.green:hover{filter:brightness(1.12);}.arrow.red{background:#8a2222;}.arrow.red:hover{filter:brightness(1.12);}.setters{display:grid; gap: 6px; margin: 8px 0; min-width: 220px; flex:1;}.label{font-size:14px; opacity:0.9;}.time-input{width:100%;padding:10px 12px;border-radius:10px;border:1px solid rgba(255,255,255,0.2);background:#2b2b2b;color:var(--border-quart);outline:none;}.time-input:focus{border-color:rgba(255,255,255,0.35);}.hint{font-size:12px; opacity:0.7;}.time-input.invalid{border-color:var(--text-color);}.back-link{margin-top:14px;}.back-link a{color:var(--border-quart);}.alert-backdrop{position:fixed;inset:0;background:rgba(0,0,0,0.55);display:grid;place-items:center;z-index:1000;}.alert-backdrop.hidden{display:none;}.alert-modal{background:radial-gradient(ellipse at center, #2a2a2a 0%, #1e1e1e 70%, #151515 100%);border:2px solid rgba(255,255,255,0.2);border-radius:16px;padding:18px;width:min(460px, 92vw);color:var(--border-quart);text-align:center;box-shadow:0 2px 10px rgba(0,0,0,0.4);}.alert-modal h2{margin-bottom:8px; color:var(--text-color);}.alert-modal p{margin-bottom:12px;}#laps{list-style:none;padding:10px;margin:0;max-height:180px;overflow:auto;}#alarms{list-style:none;padding:10px;margin:0;max-height:200px;overflow:auto;}