*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--color-primary: #1D9E75;--color-primary-light: #e6f7f2;--color-quiz: #185FA5;--color-admin: #3C3489;--bg: #f4f6f8;--surface: #ffffff;--text: #1a1a2e;--text-muted: #6b7280;--border: #e5e7eb;--nav-height: 64px;--header-height: 52px}@media (prefers-color-scheme: dark){:root{--bg: #0f1117;--surface: #1a1d27;--text: #f1f5f9;--text-muted:#94a3b8;--border: #2d3148}}html,body,#root{height:100%;font-family:Segoe UI,system-ui,sans-serif}body{background:var(--bg);color:var(--text)}.layout-root{display:flex;flex-direction:column;min-height:100vh;max-width:480px;margin:0 auto}.layout-header{position:sticky;top:0;z-index:10;height:var(--header-height);background:var(--surface);border-bottom:1px solid var(--border);display:flex;align-items:center;padding:0 16px}.layout-logo{font-size:1.1rem;font-weight:700;color:var(--color-primary);letter-spacing:-.3px}.layout-main{flex:1;overflow-y:auto;padding:16px 16px calc(var(--nav-height) + 16px)}.bottom-nav{position:fixed;bottom:0;left:50%;transform:translate(-50%);width:100%;max-width:480px;height:var(--nav-height);background:var(--surface);border-top:1px solid var(--border);display:flex;align-items:center;justify-content:space-around;z-index:100;padding-bottom:env(safe-area-inset-bottom,0)}.bottom-nav__item{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;text-decoration:none;color:var(--text-muted);padding:6px 0;transition:color .2s}.bottom-nav__item--active{color:var(--color-primary)}.bottom-nav__label{font-size:.65rem;font-weight:500;letter-spacing:.2px}.bottom-nav__item--active .bottom-nav__label{font-weight:700}.card{background:var(--surface);border-radius:12px;border:1px solid var(--border);padding:16px}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 20px;border-radius:10px;font-size:.95rem;font-weight:600;cursor:pointer;border:none;transition:opacity .2s,transform .1s}.btn:active{transform:scale(.97)}.btn:disabled{opacity:.55;cursor:not-allowed}.btn--primary{background:var(--color-primary);color:#fff;width:100%}.btn--outline{background:transparent;color:var(--color-primary);border:1.5px solid var(--color-primary);width:100%}.input-group{display:flex;flex-direction:column;gap:6px}.input-group label{font-size:.85rem;font-weight:600;color:var(--text)}.input-group input{padding:12px 14px;border-radius:10px;border:1.5px solid var(--border);background:var(--bg);color:var(--text);font-size:.95rem;outline:none;transition:border-color .2s}.input-group input:focus{border-color:var(--color-primary)}.alert-error{background:#fcebeb;color:#501313;border-radius:8px;padding:10px 14px;font-size:.85rem;font-weight:500}.alert-success{background:#e1f5ee;color:#085041;border-radius:8px;padding:10px 14px;font-size:.85rem;font-weight:500}.public-page{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:24px 16px;background:var(--bg)}.public-page__card{width:100%;max-width:420px;background:var(--surface);border-radius:16px;border:1px solid var(--border);padding:32px 24px;display:flex;flex-direction:column;gap:20px}.public-page__logo{text-align:center;font-size:2rem;margin-bottom:4px}.public-page__title{text-align:center;font-size:1.3rem;font-weight:700;color:var(--color-primary)}.public-page__subtitle{text-align:center;font-size:.85rem;color:var(--text-muted);margin-top:-12px}