:root{--background:#fff;--background-secondary:#f7f7f7;--foreground:#37352f;--foreground-secondary:#6b6b6b;--border:#e0e0e0;--accent:#2383e2;--accent-hover:#1a6fc9;--success:#0f9d58;--success-bg:#0f9d581a;--highlight-shadow:0 0 0 3px #2383e24d;--card-shadow:0 1px 3px #00000014}[data-theme=dark]{--background:#1e1e1e;--background-secondary:#2d2d2d;--foreground:#e0e0e0;--foreground-secondary:#a0a0a0;--border:#404040;--accent:#4da3ff;--accent-hover:#3d93ef;--success:#34d399;--success-bg:#34d39926;--highlight-shadow:0 0 0 3px #4da3ff4d;--card-shadow:0 1px 3px #0000004d}html,body{max-width:100vw;min-height:100vh;overflow-x:hidden}body{color:var(--foreground);background:var(--background);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;font-family:Inter,Noto Sans JP,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;line-height:1.6;transition:background-color .3s,color .3s}*{box-sizing:border-box;margin:0;padding:0}.container{flex-direction:column;justify-content:center;align-items:center;min-height:100vh;padding:2rem;display:flex}.header{padding:1.5rem;position:fixed;top:0;right:0}.theme-toggle{background:var(--background-secondary);border:1px solid var(--border);cursor:pointer;color:var(--foreground);border-radius:8px;justify-content:center;align-items:center;padding:.5rem .75rem;font-size:1.25rem;transition:all .2s;display:flex}.theme-toggle:hover{background:var(--border);transform:scale(1.05)}.main{text-align:center;width:100%;max-width:500px}.title{color:var(--foreground);margin-bottom:.5rem;font-size:2rem;font-weight:600}.subtitle{color:var(--foreground-secondary);margin-bottom:2.5rem;font-size:.95rem}.coin-container{margin-bottom:2rem}.coin{color:#8b6914;-webkit-user-select:none;user-select:none;background:linear-gradient(145deg,gold,#ffb700);border-radius:50%;justify-content:center;align-items:center;width:120px;height:120px;margin:0 auto;font-size:2.5rem;font-weight:700;transition:transform .1s;display:flex;box-shadow:0 4px 15px #ffb7004d,inset 0 -3px 10px #0000001a,inset 0 3px 10px #ffffff4d}.coin.spinning{animation:.15s ease-in-out infinite spin}@keyframes spin{0%{transform:rotateY(0)}50%{transform:rotateY(90deg)scaleX(.5)}to{transform:rotateY(180deg)}}.coin-result{color:var(--accent);min-height:2rem;margin-top:1rem;font-size:1.5rem;font-weight:600}.toss-button{background:var(--accent);color:#fff;cursor:pointer;border:none;border-radius:8px;margin-bottom:2.5rem;padding:.875rem 2.5rem;font-size:1rem;font-weight:500;transition:all .2s}.toss-button:hover:not(:disabled){background:var(--accent-hover);transform:translateY(-2px);box-shadow:0 4px 12px #2383e24d}.toss-button:active:not(:disabled){transform:translateY(0)}.toss-button:disabled{opacity:.6;cursor:not-allowed}.inputs-container{flex-direction:column;gap:1.25rem;display:flex}.input-section{background:var(--background-secondary);border:1px solid var(--border);border-radius:12px;padding:1.25rem;transition:all .3s}.input-section.highlighted{border-color:var(--success);background:var(--success-bg);box-shadow:var(--highlight-shadow);transform:scale(1.02)}.input-section.highlighted .input-label{color:var(--success)}.input-label{color:var(--foreground);align-items:center;gap:.5rem;margin-bottom:.75rem;font-size:.9rem;font-weight:500;display:flex}.input-label-icon{font-size:1.1rem}.text-input{background:var(--background);border:1px solid var(--border);width:100%;color:var(--foreground);border-radius:8px;padding:.75rem 1rem;font-family:inherit;font-size:.95rem;transition:border-color .2s}.text-input:focus{border-color:var(--accent);outline:none}.text-input::placeholder{color:var(--foreground-secondary);opacity:.7}@media (max-width:600px){.container{padding:4rem 1.5rem 1.5rem}.title{font-size:1.5rem}.coin{width:100px;height:100px;font-size:2rem}}