@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;500;600;700&family=Manrope:wght@400;500;600;700;800&display=swap');
:root{--forest:#153c34;--forest2:#20594a;--mint:#dff3e8;--lime:#bce7a5;--paper:#f7f8f4;--ink:#1b2925;--muted:#78847e;--line:#e5eae4;--white:#fff;--gold:#d8a75a}
*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font-family:'DM Sans',sans-serif}button,textarea,input{font:inherit}button{cursor:pointer}.app-shell{min-height:100vh;display:flex}.sidebar{width:255px;flex-shrink:0;background:#fff;border-right:1px solid var(--line);padding:25px 16px 18px;display:flex;flex-direction:column;min-height:100vh}.brand{display:flex;align-items:center;gap:11px;text-decoration:none;color:var(--forest);font-family:Manrope,sans-serif;font-size:19px;font-weight:800;padding:0 8px 28px}.brand small{display:block;font-family:'DM Sans',sans-serif;color:#8a968f;font-size:8px;letter-spacing:1.15px;font-weight:700;margin-top:3px}.brand-mark{width:39px;height:39px;border-radius:13px;background:var(--forest);display:grid;place-items:center;color:#fff;font-size:23px;position:relative}.brand-mark span{font-size:10px;color:var(--lime);position:absolute;right:5px;top:5px}.new-chat{display:flex;align-items:center;gap:10px;background:var(--forest);color:white;border:0;border-radius:11px;padding:13px 14px;font-weight:700;margin-bottom:28px;text-align:left}.nav-label{font-size:10px;letter-spacing:1.4px;color:#9aa49e;font-weight:700;padding:0 10px;margin:0 0 10px}.nav-item{display:flex;align-items:center;gap:12px;width:100%;text-align:left;background:transparent;border:0;border-radius:9px;padding:12px 11px;color:#66736c;font-size:13px;margin-bottom:4px}.nav-item span{font-size:18px;width:20px;text-align:center}.nav-item.active,.nav-item:hover{background:#eaf5ee;color:var(--forest);font-weight:700}.history-heading{margin-top:28px}.history-list{display:flex;flex-direction:column;gap:3px}.history-item{background:transparent;border:0;text-align:left;color:#69756e;padding:9px 10px;border-radius:8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;font-size:12px}.history-item:hover{background:#f1f5f0}.muted{color:var(--muted)}.small{font-size:11px}.sidebar-bottom{margin-top:auto;border:1px solid #e8eee7;background:#f8faf6;border-radius:12px;padding:13px;display:flex;align-items:center;gap:10px}.rock-icon{background:var(--mint);width:35px;height:35px;border-radius:10px;display:grid;place-items:center;color:var(--forest);font-size:22px}.sidebar-bottom strong{font-size:12px}.sidebar-bottom p{margin:3px 0 0;font-size:10px;color:var(--muted)}.main-area{flex:1;min-width:0;display:flex;flex-direction:column}.topbar{height:68px;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;padding:0 34px;background:rgba(255,255,255,.7)}.breadcrumb{font-size:12px;color:#8a958e}.breadcrumb span{margin:0 9px;color:#c4ccc5}.breadcrumb strong{color:#35443c}.top-actions{display:flex;align-items:center;gap:8px;color:#748178}.online-dot{width:7px;height:7px;border-radius:50%;background:#65b87e}.menu-btn{display:none}.content{width:min(100%,1060px);margin:0 auto;padding:35px 35px 45px;flex:1}.eyebrow{color:#58816c;text-transform:uppercase;letter-spacing:1.7px;font-weight:700;font-size:10px}.hero{background:var(--forest);border-radius:21px;padding:36px 38px;color:#fff;position:relative;overflow:hidden;display:grid;grid-template-columns:1.35fr .65fr;gap:15px;min-height:250px}.hero:after{content:"";position:absolute;width:280px;height:280px;border:1px solid #ffffff1c;border-radius:50%;right:-50px;top:-100px;box-shadow:0 0 0 35px #ffffff08,0 0 0 70px #ffffff06}.hero h1{font:800 clamp(27px,3.5vw,40px)/1.14 Manrope,sans-serif;letter-spacing:-1.4px;margin:13px 0}.hero h1 em{font-style:normal;color:var(--lime)}.hero p{color:#d2e3d9;max-width:440px;font-size:13px;line-height:1.7;margin:0 0 22px}.hero .eyebrow{color:var(--lime)}.hero-art{align-self:center;justify-self:center;z-index:1;width:165px;height:165px;border:1px solid #ffffff28;border-radius:50%;display:grid;place-items:center;background:radial-gradient(circle,#39715d 0%,#214d40 55%,#183f35 72%);font-size:78px;color:#c3e7aa;box-shadow:inset 0 0 35px #ffffff0c}.btn-primary,.btn-light,.btn-outline{border:0;border-radius:9px;padding:12px 16px;font-size:12px;font-weight:700;display:inline-flex;align-items:center;gap:8px}.btn-primary{background:var(--lime);color:#173c31}.btn-light{background:#fff;color:var(--forest)}.btn-outline{background:#fff;border:1px solid var(--line);color:var(--forest)}.section-heading{display:flex;justify-content:space-between;align-items:end;margin:30px 0 14px}.section-heading h2{font:800 18px Manrope,sans-serif;margin:0 0 5px;letter-spacing:-.4px}.section-heading p{margin:0;color:var(--muted);font-size:12px}.text-link{border:0;background:transparent;color:#49785e;font-weight:700;font-size:11px}.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:13px}.feature-card,.note-card,.quiz-card{background:#fff;border:1px solid var(--line);border-radius:14px;padding:18px;text-align:left}.feature-card{transition:transform .15s,border .15s}.feature-card:hover{transform:translateY(-2px);border-color:#b9d8c0}.card-icon{width:39px;height:39px;display:grid;place-items:center;border-radius:11px;background:#e9f5ec;color:#285b43;font-size:21px;margin-bottom:16px}.card-icon.gold{background:#fbf0dc;color:#956b2e}.card-icon.blue{background:#e9f1fa;color:#426e9b}.feature-card h3,.note-card h3,.quiz-card h3{font:700 14px Manrope,sans-serif;margin:0 0 7px}.feature-card p,.note-card p,.quiz-card p{color:var(--muted);font-size:11px;line-height:1.65;margin:0}.card-arrow{display:block;color:#4d7d5e;font-size:11px;font-weight:700;margin-top:16px}.quick-prompt-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:13px}.prompt-chip{border:1px solid #dfe8df;background:#fff;color:#596960;border-radius:30px;padding:9px 12px;font-size:11px}.prompt-chip:hover{background:#eaf5ee;color:var(--forest)}.page-title{font:800 29px/1.2 Manrope,sans-serif;letter-spacing:-.8px;margin:8px 0}.page-subtitle{font-size:13px;color:var(--muted);line-height:1.7;margin:0 0 25px}.tutor-panel{background:#fff;border:1px solid var(--line);border-radius:16px;overflow:hidden}.tutor-top{background:#f0f7f0;padding:18px 20px;display:flex;align-items:center;gap:12px;border-bottom:1px solid var(--line)}.tutor-avatar{width:39px;height:39px;background:var(--forest);color:var(--lime);display:grid;place-items:center;border-radius:12px;font-size:19px}.tutor-top strong{font-size:13px}.tutor-top p{margin:4px 0 0;color:var(--muted);font-size:11px}.chat-messages{padding:20px;min-height:190px;max-height:450px;overflow:auto;display:flex;flex-direction:column;gap:15px}.message{max-width:88%;font-size:13px;line-height:1.75;white-space:pre-wrap}.message.assistant{align-self:flex-start;background:#f3f6f1;padding:13px 15px;border-radius:4px 13px 13px 13px}.message.user{align-self:flex-end;background:var(--forest);color:#fff;padding:12px 15px;border-radius:13px 4px 13px 13px}.chat-compose{padding:14px;border-top:1px solid var(--line)}.chat-compose textarea{width:100%;resize:vertical;min-height:68px;border:1px solid #dfe6de;border-radius:10px;padding:12px;outline:none;font-size:13px}.chat-compose textarea:focus{border-color:#82b492}.compose-bottom{display:flex;justify-content:space-between;align-items:center;gap:10px;margin-top:10px}.compose-bottom span{font-size:10px;color:var(--muted)}.notes-grid,.quiz-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}.note-card{padding:22px}.note-card .tag{display:inline-block;font-size:9px;font-weight:700;letter-spacing:.8px;text-transform:uppercase;background:#edf5ec;color:#477458;border-radius:5px;padding:5px 7px;margin-bottom:13px}.note-card h3{font-size:17px}.note-card p{font-size:12px}.note-card details{margin-top:13px;border-top:1px solid var(--line);padding-top:12px}.note-card summary{font-size:11px;font-weight:700;color:#3e7051;cursor:pointer}.note-card details p{margin-top:10px}.quiz-card{padding:22px}.quiz-card h3{font-size:15px;line-height:1.5}.quiz-options{display:grid;gap:8px;margin:15px 0}.quiz-option{padding:10px 12px;border:1px solid var(--line);background:#fff;border-radius:8px;text-align:left;font-size:12px;color:#45534a}.quiz-option.selected{border-color:#5c946e;background:#edf7ee}.quiz-option.correct{border-color:#58a66d;background:#e8f7eb}.quiz-option.wrong{border-color:#d58c7e;background:#fff0ed}.quiz-feedback{font-size:11px;line-height:1.6;color:#587360;min-height:18px}.stats-row{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:17px}.stat{background:#fff;border:1px solid var(--line);border-radius:12px;padding:15px}.stat strong{font:800 21px Manrope,sans-serif;color:var(--forest)}.stat span{display:block;color:var(--muted);font-size:10px;margin-top:4px}.empty-state{text-align:center;padding:30px 15px;color:var(--muted);font-size:12px}.toast{position:fixed;bottom:22px;left:50%;transform:translate(-50%,20px);background:#173e33;color:white;padding:12px 17px;border-radius:10px;font-size:12px;opacity:0;pointer-events:none;transition:.2s}.toast.show{opacity:1;transform:translate(-50%,0)}footer{text-align:center;padding:16px;border-top:1px solid var(--line);font-size:10px;color:#8c9890}footer span{padding:0 5px;color:#a6c69e}
@media(max-width:850px){.sidebar{width:220px}.content{padding:25px 22px}.hero{padding:28px;grid-template-columns:1fr .45fr}.hero-art{width:120px;height:120px;font-size:55px}.topbar{padding:0 22px}}
@media(max-width:650px){.sidebar{position:fixed;z-index:20;top:0;bottom:0;left:-270px;width:255px;transition:left .22s;box-shadow:8px 0 30px #12251b15}.sidebar.open{left:0}.menu-btn{display:block;border:0;background:transparent;color:var(--forest);font-size:20px}.topbar{height:59px;padding:0 15px;justify-content:flex-start;gap:12px}.top-actions{margin-left:auto}.top-actions .small{display:none}.content{padding:20px 14px 30px}.hero{padding:25px 21px;grid-template-columns:1fr;min-height:0}.hero h1{font-size:31px}.hero p{font-size:12px}.hero-art{display:none}.feature-grid{grid-template-columns:1fr}.feature-card{display:grid;grid-template-columns:42px 1fr;column-gap:12px;padding:15px}.feature-card .card-icon{grid-row:span 3;margin:0}.feature-card h3{align-self:end}.feature-card p{grid-column:2}.feature-card .card-arrow{grid-column:2;margin-top:8px}.section-heading{margin-top:25px}.notes-grid,.quiz-grid{grid-template-columns:1fr}.page-title{font-size:26px}.chat-messages{padding:13px;min-height:160px}.message{max-width:95%;font-size:12px}.stats-row{gap:7px}.stat{padding:11px}.stat strong{font-size:18px}.breadcrumb{font-size:11px}.topbar .breadcrumb span{margin:0 4px}}