:root{--ocean-950: #00352f;--ocean-900: #004d40;--ocean-700: #00695c;--ocean-500: #00bcd4;--ocean-200: #b2ebf2;--ink: #0f172a;--slate: #334155;--muted: #64748b;--paper: rgba(255, 255, 255, .92);--paper-2: rgba(255, 255, 255, .86);--line: rgba(15, 23, 42, .08);--sun: #ffd700;--sun-2: #ffeaa7;--radius-xl: 22px;--radius-lg: 16px;--radius-md: 12px;--shadow-1: 0 8px 24px rgba(0, 0, 0, .18);--shadow-2: 0 12px 44px rgba(0, 0, 0, .22);--font-main: "Nunito", system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif}*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}html,body{height:100%}body{margin:0;font-family:var(--font-main);color:var(--ink);background:var(--ocean-900);overflow:hidden}#root{height:100%}.chat-messages::-webkit-scrollbar{width:10px}.chat-messages::-webkit-scrollbar-thumb{background:#ffffff59;border-radius:999px}.chat-messages::-webkit-scrollbar-track{background:transparent}.app-container{height:100dvh;width:100%;display:flex;flex-direction:column;background:radial-gradient(circle at 50% 10%,#00bcd48c,#004d40 55%,#00352f);position:relative;overflow:hidden}.bg-ocean,.naia-widget-container,.login-screen,.role-screen{position:relative;height:100%;width:100%;display:flex;align-items:center;justify-content:center;padding:22px;overflow:hidden}.sun-beams{position:absolute;inset:-20%;background:radial-gradient(circle at 50% 0%,#fff3,#ffffff05 40%,#fff0 65%),conic-gradient(from 180deg at 50% 0%,#ffffff1a,#fff0 20%,#ffffff14,#fff0,#ffffff0f 80%,#fff0);filter:blur(1px);opacity:.65;pointer-events:none;animation:beams 14s linear infinite}@keyframes beams{to{transform:rotate(360deg)}}.seabed{position:absolute;left:-10%;right:-10%;bottom:-22%;height:38%;background:radial-gradient(circle at 50% 30%,#ffeaa78c,#ffd70026 55%,#ffd70000 75%);filter:blur(6px);opacity:.65;pointer-events:none}.bubble{position:absolute;bottom:-80px;background:#ffffff24;border:1px solid rgba(255,255,255,.18);border-radius:999px;filter:blur(.2px);animation:bubbleUp 14s linear infinite;pointer-events:none}@keyframes bubbleUp{0%{transform:translateY(0);opacity:0}10%{opacity:.6}to{transform:translateY(-120vh);opacity:0}}.fish{position:absolute;opacity:.18;width:56px;animation:fishSwim 18s linear infinite;pointer-events:none}.fish-1{top:22%;left:-80px;animation-duration:22s}.fish-2{top:44%;left:-120px;animation-duration:28s}@keyframes fishSwim{to{transform:translate(120vw)}}.glass-card,.login-card{width:100%;max-width:380px;background:var(--paper);border:1px solid rgba(255,255,255,.55);border-radius:var(--radius-xl);box-shadow:var(--shadow-2);padding:22px;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.naia-title{margin:0 0 8px;font-size:22px;font-weight:900;color:var(--ocean-900);letter-spacing:.2px}.naia-subtitle{margin:0 0 18px;color:var(--muted);font-size:14px;line-height:1.35}.naia-avatar-wrapper,.naia-avatar{width:128px;height:128px;border-radius:999px;background:#ffffffeb;border:6px solid rgba(255,255,255,.45);box-shadow:0 0 40px #00bcd459;display:grid;place-items:center;margin-bottom:-26px;z-index:3;animation:float 4.5s ease-in-out infinite}.naia-avatar-wrapper img,.naia-avatar img{width:72%;height:72%;object-fit:contain;display:block}@keyframes float{0%{transform:translateY(0)}50%{transform:translateY(-10px)}to{transform:translateY(0)}}.naia-input,input.naia-input{width:100%;padding:14px;border-radius:14px;border:2px solid rgba(0,188,212,.14);outline:none;font-size:15px;background:#ffffffe6}.naia-input:focus{border-color:#00bcd473;box-shadow:0 0 0 4px #00bcd41f}.naia-btn,.btn-primary{width:100%;border:none;border-radius:14px;padding:14px 16px;font-weight:900;font-size:16px;cursor:pointer;background:linear-gradient(180deg,var(--sun) 0%,#ffc107 100%);color:var(--ocean-950);box-shadow:0 6px #0000001f;transition:transform .08s ease}.naia-btn:active,.btn-primary:active{transform:translateY(4px);box-shadow:none}.naia-btn:disabled{opacity:.7;cursor:not-allowed}.naia-link,.btn-link{margin-top:12px;background:none;border:none;cursor:pointer;color:var(--ocean-700);font-weight:800;text-decoration:underline}.btn-role,.btn-select,.role-btn{width:100%;border:none;border-radius:14px;padding:14px 16px;font-weight:900;font-size:15px;cursor:pointer;background:#fffffff2;color:var(--ocean-900);border:1px solid rgba(15,23,42,.06);box-shadow:0 6px #b2ebf2b3;transition:transform .08s ease,background .2s ease}.btn-role:active,.btn-select:active,.role-btn:active{transform:translateY(4px);box-shadow:none}.btn-role:hover,.btn-select:hover,.role-btn:hover{background:#fff}.chat-screen{height:100%;display:flex;flex-direction:column;overflow:hidden}.chat-header{height:64px;padding:0 14px;display:flex;align-items:center;color:#fff;background:#0000002e;border-bottom:1px solid rgba(255,255,255,.1)}.chat-messages{flex:1;overflow-y:auto;padding:18px 16px;display:flex;flex-direction:column;gap:12px}.msg-bubble{max-width:88%;padding:14px 16px;border-radius:18px;font-size:15px;line-height:1.45;box-shadow:0 2px 10px #0000001a;word-break:break-word}.msg-bubble.bot{background:#fffffff5;color:var(--ocean-950);border-bottom-left-radius:6px;align-self:flex-start}.msg-bubble.user{background:linear-gradient(180deg,var(--sun) 0%,#ffc107 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ease-out;max-width:92%}@keyframes slideUp{0%{opacity:0;transform:translateY(14px)}to{opacity:1;transform:translateY(0)}}.ac-header{background:#b2ebf273;padding:12px 16px;display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid rgba(15,23,42,.06)}.ac-badge{background:#00695cf2;color:#fff;font-size:11px;font-weight:900;text-transform:uppercase;padding:4px 10px;border-radius:999px;letter-spacing:.6px}.ac-time{font-size:12px;color:#0f172ab8;font-weight:800}.ac-title{margin:14px 16px 6px;color:var(--ocean-950);font-size:18px;font-weight:1000}.ac-description{margin:0 16px 14px;color:var(--slate);font-size:14px;line-height:1.5}.ac-materials{margin:0 16px 14px;background:#ffeaa773;border:1px solid rgba(255,215,0,.18);padding:12px;border-radius:var(--radius-lg);font-size:13px;color:#0f172ad1}.ac-materials ul{margin:6px 0 0 18px;padding:0}.ac-pedagogy-details{margin:0 16px 14px;font-size:13px;color:#004d40f2;border-top:1px dashed rgba(15,23,42,.1);padding-top:10px}.ac-pedagogy-details summary{cursor:pointer;font-weight:900;outline:none}.ac-pedagogy-content{margin-top:8px;background:#00bcd414;border:1px solid rgba(0,188,212,.12);padding:10px 12px;border-radius:var(--radius-lg)}.ac-pedagogy-content p{margin:6px 0}.ac-pedagogy-content strong{color:var(--ocean-950)}.ac-btn-complete{width:100%;padding:14px 16px;background:linear-gradient(180deg,var(--sun) 0%,#ffc107 100%);color:var(--ocean-950);border:none;font-weight:1000;font-size:14px;letter-spacing:.7px;cursor:pointer}.ac-btn-complete:active{transform:scale(.985)}.activity-card-container.completed-mode{border:2px solid rgba(255,215,0,.85);animation:pulseSuccess .45s ease-in-out}@keyframes pulseSuccess{0%{transform:scale(1)}50%{transform:scale(1.04)}to{transform:scale(1)}}.ac-btn-complete.disabled{background:linear-gradient(180deg,#34d399,#22c55e);color:#fff;cursor:default;transform:none}@media(min-width:768px){.chat-messages{padding:22px}.msg-bubble{font-size:16px}.activity-card-container{max-width:520px}.glass-card,.login-card{max-width:420px}}.naia-avatar-wrapper,.naia-avatar{width:96px!important;height:96px!important;min-width:96px!important;min-height:96px!important;margin-bottom:-18px!important;border-width:5px!important}.naia-avatar-wrapper img,.naia-avatar img{width:68%!important;height:68%!important;max-width:68%!important;max-height:68%!important;object-fit:contain!important}.naia-free-float{width:140px!important;height:140px!important;max-width:140px!important;max-height:140px!important;margin:0 auto!important}.login-card{padding-top:34px!important}.naia-logo-shell{display:inline-flex;align-items:center;justify-content:center;border-radius:999px;background:#fffffff2;border:5px solid rgba(255,255,255,.35);box-shadow:0 0 24px #4dd0e173;overflow:hidden;flex:0 0 auto;max-width:none;max-height:none}.naia-logo-img{width:70%;height:70%;object-fit:contain;display:block;max-width:none!important}.login-logo{margin-bottom:-18px}.chat-header .header-logo{margin-right:10px;box-shadow:none;border-width:2px}