:root{--pink:#ff8eae;--pink-dark:#ed6e98;--pink-soft:#fff0f4;--peach:#ffb39d;--cream:#fff9f6;--ink:#493940;--muted:#9a858d;--line:#f0e3e5;--white:#fff;--shadow:0 18px 55px rgba(111,69,82,.11);--radius:24px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;color:var(--ink);background:var(--cream);font-family:'Noto Sans SC','Microsoft YaHei',sans-serif}button,input,textarea,select{font:inherit;color:inherit}button{cursor:pointer}button,input,textarea,select{outline:none}.hidden{display:none!important}.muted{color:var(--muted)}.eyebrow{margin:0 0 8px;color:var(--pink-dark);font-size:11px;font-weight:700;letter-spacing:2px}.primary{border:0;border-radius:14px;padding:13px 20px;color:white;background:linear-gradient(135deg,var(--pink),#ff789f);box-shadow:0 9px 25px rgba(255,126,161,.28);font-weight:700;transition:.2s}.primary:hover{transform:translateY(-2px);box-shadow:0 12px 30px rgba(255,126,161,.36)}.soft-btn{border:0;border-radius:13px;padding:10px 16px;background:var(--pink-soft);color:var(--pink-dark);font-weight:600}.text-btn{border:0;background:transparent;color:var(--muted)}.danger-btn{border:0;background:#fff0f0;color:#d84d61;border-radius:12px;padding:10px 16px}.brand{display:flex;align-items:center;gap:9px;font-size:18px}.brand span,.logo-dot,.brand-mark{display:grid;place-items:center;color:#fff;background:linear-gradient(145deg,var(--pink),var(--peach));box-shadow:0 5px 15px rgba(255,142,174,.3)}.brand span,.logo-dot{width:34px;height:34px;border-radius:12px}.brand-mark{width:52px;height:52px;border-radius:18px;margin:0 auto 16px;font-size:22px}.toast{position:fixed;z-index:100;left:50%;top:20px;transform:translate(-50%,-20px);padding:11px 18px;border-radius:50px;background:#47373e;color:white;opacity:0;pointer-events:none;transition:.25s;box-shadow:var(--shadow);font-size:14px}.toast.show{opacity:1;transform:translate(-50%,0)}.toast.error{background:#c94c67}

/* Login and setup */
.auth-shell{min-height:100vh;display:grid;grid-template-columns:minmax(420px,1.15fr) minmax(420px,.85fr);background:#fff}.auth-art{position:relative;overflow:hidden;display:flex;align-items:center;justify-content:center;padding:8%;background:radial-gradient(circle at 28% 20%,#fff9fb 0 10%,transparent 30%),linear-gradient(145deg,#ffe6ed,#ffd3dc 60%,#ffc9d4)}.auth-art:after{content:"";position:absolute;width:480px;height:480px;border:1px solid rgba(255,255,255,.55);border-radius:50%;right:-170px;bottom:-160px}.art-copy{position:relative;z-index:2;max-width:530px}.art-copy h1{font-family:'DM Serif Display','STSong',serif;font-size:clamp(46px,5.2vw,78px);font-weight:400;line-height:1.15;margin:16px 0;color:#5b3b46}.art-copy h1 i{color:#da668a}.art-copy>p:last-child{max-width:400px;line-height:2;color:#8c6773}.mini-calendar{position:absolute;right:9%;bottom:10%;z-index:2;width:145px;padding:18px;text-align:center;border:1px solid rgba(255,255,255,.8);background:rgba(255,255,255,.64);backdrop-filter:blur(12px);border-radius:24px;transform:rotate(5deg);box-shadow:var(--shadow)}.mini-calendar span,.mini-calendar small{display:block;color:#b38291;font-size:10px;letter-spacing:2px}.mini-calendar strong{display:block;font-family:'DM Serif Display',serif;font-size:50px;line-height:1.1}.floating-shape{position:absolute;border-radius:50%;background:rgba(255,255,255,.45)}.s1{width:90px;height:90px;top:12%;left:10%}.s2{width:34px;height:34px;bottom:18%;left:18%}.auth-card{display:flex;flex-direction:column;justify-content:center;max-width:490px;width:100%;margin:auto;padding:60px}.auth-card>.brand{position:absolute;top:35px}.auth-card h2,.setup-card h1{font-family:'DM Serif Display','STSong',serif;font-weight:400;font-size:34px;margin:4px 0 8px}.auth-tabs,.filter-row,.tool-tabs{display:flex;gap:8px;margin:28px 0 22px;padding:5px;border-radius:14px;background:#f8f4f4}.auth-tabs button,.filter-row button,.tool-tabs button{flex:1;border:0;background:transparent;border-radius:10px;padding:10px;color:var(--muted);white-space:nowrap}.auth-tabs button.active,.filter-row button.active,.tool-tabs button.active{background:white;color:var(--pink-dark);font-weight:700;box-shadow:0 3px 12px rgba(85,52,62,.07)}.stack-form{display:grid;gap:16px}.stack-form label,.form-grid label{display:grid;gap:7px;font-size:13px;font-weight:600}.stack-form input,.stack-form textarea,.stack-form select,.form-grid input,.create-user input{width:100%;border:1px solid var(--line);border-radius:13px;background:#fff;padding:13px 15px;transition:.2s}.stack-form input:focus,.stack-form textarea:focus,.stack-form select:focus,.form-grid input:focus{border-color:#ffabc0;box-shadow:0 0 0 4px #fff0f4}.stack-form textarea{resize:vertical;min-height:92px}.form-hint,.auth-foot{font-size:12px;color:var(--muted)}.auth-foot{text-align:center;margin-top:28px}.setup-page{min-height:100vh;display:grid;place-items:center;padding:24px;background:radial-gradient(circle at 20% 20%,#fff 0 10%,transparent 35%),linear-gradient(145deg,#fff7f9,#ffe6ec)}.setup-card{width:min(650px,100%);padding:45px;background:#fff;border-radius:30px;box-shadow:var(--shadow);text-align:center}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:17px;margin-top:25px;text-align:left}.form-grid .full{grid-column:1/-1}.alert{margin:18px 0;padding:13px 16px;border-radius:13px}.alert.error{background:#fff0f1;color:#b43e55}.alert.success{background:#effbf4;color:#347958}

/* Main app */
.app-shell{min-height:100vh}.side-nav{position:fixed;z-index:20;inset:0 auto 0 0;width:218px;padding:30px 22px;background:#fff;border-right:1px solid var(--line);display:flex;flex-direction:column}.side-nav nav{display:grid;gap:8px;margin-top:55px}.side-nav nav button{display:flex;align-items:center;gap:14px;border:0;border-radius:13px;padding:12px 14px;background:transparent;color:var(--muted);text-align:left}.side-nav nav button span{width:22px;text-align:center;font-size:18px}.side-nav nav button.active,.side-nav nav button:hover{background:var(--pink-soft);color:var(--pink-dark);font-weight:700}.nav-quote{margin-top:auto;padding:18px;border-radius:17px;background:#fff6f8;color:#b38491;font-family:'DM Serif Display','STSong',serif;line-height:1.8}.app-main{margin-left:218px;min-height:100vh}.topbar{position:sticky;z-index:10;top:0;height:80px;display:flex;align-items:center;justify-content:space-between;padding:0 5%;background:rgba(255,249,246,.88);backdrop-filter:blur(15px);border-bottom:1px solid rgba(240,227,229,.7)}.topbar>div:first-of-type{display:grid}.topbar span{font-size:11px;color:var(--muted)}.topbar strong{font-size:17px}.top-actions{display:flex;align-items:center;gap:12px}.top-actions button,#menu-btn{width:38px;height:38px;border:0;border-radius:50%;background:white;color:var(--pink-dark);font-size:20px}.user-chip{display:grid!important;place-items:center;width:38px;height:38px;border-radius:50%;background:linear-gradient(145deg,#ffb1c3,#ff829f);color:#fff!important;font-weight:700;font-size:15px!important}.page{display:none;padding:36px 5% 80px;max-width:1450px;margin:auto}.page.active{display:block}.welcome-card{position:relative;overflow:hidden;display:flex;align-items:center;justify-content:space-between;min-height:245px;padding:42px 7%;border-radius:32px;background:linear-gradient(115deg,#ffe4ea,#ffd6dc);box-shadow:0 16px 50px rgba(213,116,143,.12)}.welcome-card h1{font-family:'DM Serif Display','STSong',serif;font-size:42px;font-weight:400;margin:3px 0}.welcome-card p:not(.eyebrow){color:#8b6873}.peach-orbit{position:relative;width:180px;height:180px;display:grid;place-items:center}.peach-orbit:before,.peach-orbit:after{content:"";position:absolute;border:1px solid rgba(255,255,255,.7);border-radius:50%;inset:6px}.peach-orbit:after{inset:25px}.peach-orbit span{display:grid;place-items:center;width:88px;height:88px;border-radius:45% 45% 50% 50%;background:linear-gradient(145deg,#ff9dab,#ffbeac);color:white;font-size:29px;box-shadow:0 15px 35px rgba(207,102,131,.22)}.dashboard-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:22px;margin-top:22px}.panel{padding:25px;border:1px solid rgba(240,227,229,.8);border-radius:var(--radius);background:#fff;box-shadow:0 10px 35px rgba(79,49,59,.05)}.panel h2,.page-head h1{font-family:'DM Serif Display','STSong',serif;font-weight:400}.panel h2{font-size:22px;margin:0}.panel-head{display:flex;justify-content:space-between;align-items:start;margin-bottom:17px}.panel-head>button{border:0;width:35px;height:35px;border-radius:12px;background:var(--pink-soft);color:var(--pink-dark);font-size:20px}.check-list{display:grid;gap:7px}.check-row{display:grid;grid-template-columns:20px 1fr auto;align-items:center;gap:11px;padding:10px 4px;border:0;border-bottom:1px solid #f8eeee;background:transparent;text-align:left}.check-row i,.round-check{width:20px;height:20px;border:2px solid #f3b3c3;border-radius:50%;background:white}.check-row small{color:var(--muted)}.big-countdown{text-align:center}.countdown-core{display:block;width:100%;border:0;background:transparent}.countdown-core span,.countdown-core small{display:block;color:var(--muted)}.countdown-core strong{font-family:'DM Serif Display',serif;font-size:70px;color:var(--pink-dark);line-height:1.1}.countdown-core em{font-style:normal;color:var(--pink-dark)}.empty-illustration{font-size:45px;color:#ffc1cf}.quick-note-panel textarea{width:100%;height:105px;padding:14px;border:0;border-radius:15px;background:#fff7f8;resize:none}.quick-note-panel form{display:grid;gap:10px}.focus-mini{text-align:center;background:linear-gradient(145deg,#fff,#fff4f6)}.mini-timer{margin:15px;font-family:'DM Serif Display',serif;font-size:44px;color:var(--pink-dark)}.empty-state{grid-column:1/-1;text-align:center;padding:40px 15px;color:var(--muted)}.empty-state span{font-size:35px;color:#ffc0cf}.page-head{display:flex;align-items:end;justify-content:space-between;margin-bottom:28px}.page-head h1{font-size:40px;margin:2px 0 5px}.page-head p:not(.eyebrow){margin:0;color:var(--muted)}.filter-row{width:max-content;margin:0 0 18px}.filter-row button{min-width:90px}.card-list{display:grid;gap:12px}.item-card{display:flex;align-items:center;gap:14px;padding:17px 20px;border:1px solid var(--line);border-radius:18px;background:white;transition:.2s}.item-card:hover{transform:translateY(-2px);box-shadow:0 10px 26px rgba(80,50,60,.07)}.round-check{flex:none;color:transparent}.item-card.done{opacity:.62}.item-card.done .round-check{background:var(--pink);border-color:var(--pink);color:white}.item-card.done h3{text-decoration:line-through}.item-body{flex:1;border:0;background:transparent;text-align:left}.item-body h3,.item-body p{margin:0}.item-body p{margin-top:4px;color:var(--muted);font-size:13px}.item-body>div{display:flex;gap:10px;align-items:center;margin-top:8px}.priority{font-size:10px;padding:3px 8px;border-radius:30px;background:#f4f1f2}.priority.p-high{color:#d54f68;background:#fff0f2}.priority.p-low{color:#5b8a74;background:#edf8f2}.item-body time{font-size:11px;color:var(--muted)}.note-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:17px}.note-card{min-height:230px;padding:24px;border:0;border-radius:22px;background:#fff;text-align:left;box-shadow:0 8px 25px rgba(77,49,57,.05)}.note-card>span{font-family:'DM Serif Display',serif;font-size:30px}.note-card>small{margin-left:5px;color:var(--muted)}.note-card h3{margin:22px 0 7px;font-size:18px}.note-card p{display:-webkit-box;overflow:hidden;-webkit-line-clamp:3;-webkit-box-orient:vertical;color:#78666c;line-height:1.7;font-size:13px}.note-card time{font-size:10px;color:var(--muted)}.note-card.tone-0{background:#fff0f3}.note-card.tone-1{background:#fff6e9}.note-card.tone-2{background:#f0f7f1}.note-card.tone-3{background:#f3f1fa}.tool-tabs{overflow-x:auto}.tool-tabs button{min-width:115px}.tool-head{display:flex;align-items:center;justify-content:space-between;margin:25px 0 18px}.tool-head h2{font-family:'DM Serif Display','STSong',serif;font-weight:400}.countdown-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:17px}.countdown-card{border:0;border-radius:24px;padding:23px;background:#ffecef}.countdown-card.c1{background:#fff0df}.countdown-card.c2{background:#ecf6f0}.countdown-card>p{color:#856d75}.course-grid{display:grid;grid-template-columns:repeat(7,1fr);gap:8px}.course-grid section{min-height:220px;padding:12px;border-radius:16px;background:#fff;border:1px solid var(--line)}.course-grid h3{text-align:center;font-size:13px}.course-grid section>button{width:100%;display:grid;gap:3px;border:0;border-left:3px solid var(--pink);border-radius:8px;padding:10px 7px;margin-bottom:8px;background:var(--pink-soft);text-align:left}.course-grid section>button span,.course-grid section>button small{font-size:10px;color:var(--muted)}.course-grid section>p{text-align:center;color:#c4b5ba;font-size:11px}.habit-list{display:grid;gap:12px}.habit-list article{display:flex;align-items:center;gap:15px;padding:18px 20px;background:#fff;border-radius:18px;border:1px solid var(--line)}.habit-list article>span{display:grid;place-items:center;width:48px;height:48px;border-radius:15px;background:#fff1f4;font-size:23px}.habit-list article>div{flex:1}.habit-list h3,.habit-list p{margin:0}.habit-list p{font-size:12px;color:var(--muted)}.habit-check{border:1px solid #ffc0cf;border-radius:30px;padding:9px 15px;background:white;color:var(--pink-dark)}.habit-check.done{background:var(--pink);color:white}.focus-tool{text-align:center;padding:45px;border-radius:30px;background:linear-gradient(145deg,#fff,#fff0f4)}.focus-tool h2{font-family:'DM Serif Display','STSong',serif;font-size:30px;font-weight:400}.focus-ring{width:240px;height:240px;margin:30px auto;display:grid;place-content:center;border:13px solid #ffdce5;border-right-color:var(--pink);border-radius:50%}.focus-ring strong{display:block;font-family:'DM Serif Display',serif;font-size:57px}.focus-ring span{color:var(--muted);font-size:12px}.focus-tool .soft-btn{margin-left:8px}.gpa-tool{max-width:720px;margin:auto}.gpa-row{display:grid;grid-template-columns:2fr 1fr 1fr 38px;gap:8px;margin:9px 0}.gpa-row input{min-width:0;border:1px solid var(--line);border-radius:10px;padding:10px}.gpa-row button{border:0;background:#fff0f2;color:#d25169;border-radius:10px}.gpa-result{margin-top:25px;padding:25px;border-radius:18px;background:var(--pink-soft);text-align:center}.gpa-result strong{margin:0 8px;font-family:'DM Serif Display',serif;font-size:48px;color:var(--pink-dark)}.profile-grid{display:grid;grid-template-columns:.7fr 1.3fr;gap:22px}.profile-card{text-align:center;padding:38px;border-radius:var(--radius);background:linear-gradient(145deg,#ffe5eb,#ffd5de)}.profile-avatar{display:grid;place-items:center;width:90px;height:90px;margin:auto;border-radius:50%;background:white;color:var(--pink-dark);font-size:32px;font-weight:700}.profile-card h2{font-family:'DM Serif Display','STSong',serif;margin-bottom:3px}.profile-card p{color:#9a7080}.profile-stats{display:flex;justify-content:center;gap:35px;margin-top:30px}.profile-stats span{display:grid;font-size:11px;color:#9c7482}.profile-stats b{font-size:22px;color:var(--ink)}

/* Modal */
dialog{width:min(560px,calc(100% - 28px));border:0;border-radius:25px;padding:0;box-shadow:0 25px 80px rgba(76,42,53,.25)}dialog::backdrop{background:rgba(67,43,51,.35);backdrop-filter:blur(4px)}dialog form{padding:27px}.modal-head,.modal-actions{display:flex;align-items:center;justify-content:space-between}.modal-head h2{font-family:'DM Serif Display','STSong',serif;margin:0 0 20px;font-size:28px}.close-btn{border:0;background:#f7f2f3;border-radius:50%;width:35px;height:35px;font-size:22px}.modal-actions{justify-content:flex-end;gap:8px;margin-top:22px}.two-cols{display:grid;grid-template-columns:1fr 1fr;gap:14px}

/* Admin */
.admin-page{background:#fbf8f7}.admin-header{height:68px;display:flex;align-items:center;justify-content:space-between;padding:0 5%;background:#fff;border-bottom:1px solid var(--line)}.admin-header>div{display:flex;align-items:center;gap:10px}.admin-header small{color:var(--muted)}.admin-header a{color:var(--muted);text-decoration:none}.admin-main{max-width:1250px;margin:auto;padding:45px 30px}.admin-hero{display:flex;justify-content:space-between;align-items:end;margin-bottom:25px}.admin-hero h1{font-family:'DM Serif Display','STSong',serif;font-size:38px;font-weight:400;margin:0}.create-user{display:flex;gap:8px}.create-user input{width:220px}.key-reveal{display:flex;align-items:center;gap:16px;padding:18px 22px;margin:18px 0;border:1px dashed var(--pink);border-radius:17px;background:#fff5f7}.key-reveal strong{font-size:23px;letter-spacing:3px;color:var(--pink-dark)}.key-reveal button{margin-left:auto;border:0;border-radius:9px;padding:8px 12px;background:var(--pink);color:white}.stat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:15px;margin:22px 0}.stat-grid article{display:grid;padding:22px;border-radius:18px;background:#fff;border:1px solid var(--line)}.stat-grid span{color:var(--muted);font-size:12px}.stat-grid strong{font-family:'DM Serif Display',serif;font-size:35px}.table-card{overflow:hidden;background:#fff;border-radius:20px;border:1px solid var(--line)}.table-title{display:flex;justify-content:space-between;align-items:center;padding:20px 24px}.table-title h2{margin:0;font-size:18px}.table-title span{color:var(--muted);font-size:12px}.table-wrap{overflow-x:auto}table{width:100%;border-collapse:collapse;text-align:left}th{padding:12px 18px;background:#fcf9f9;color:var(--muted);font-size:11px}td{padding:15px 18px;border-top:1px solid #f4ebed;font-size:13px;white-space:nowrap}td:first-child{display:flex;align-items:center;gap:8px}td small{color:var(--muted)}td em{color:#b49da4}.avatar{display:grid;place-items:center;width:34px;height:34px;border-radius:11px;background:var(--pink-soft);color:var(--pink-dark)}.status{padding:5px 10px;border-radius:30px;font-size:11px}.status.active{background:#eaf8ef;color:#3b865d}.status.disabled{background:#f5eff0;color:#a27780}.row-actions form{display:flex;gap:4px}.row-actions button{border:0;background:#f6f2f3;border-radius:7px;padding:6px 8px;font-size:11px}.row-actions button.danger{color:#cf4960;background:#fff0f2}.empty-cell{text-align:center!important;padding:50px;color:var(--muted)}

.bottom-nav,#menu-btn{display:none}
@media(max-width:900px){.auth-shell{grid-template-columns:1fr}.auth-art{display:none}.auth-card{min-height:100vh;padding:35px 26px}.auth-card>.brand{position:static;margin-bottom:55px}.side-nav{transform:translateX(-105%);transition:.25s;box-shadow:var(--shadow)}.side-nav.open{transform:translateX(0)}.app-main{margin-left:0}.topbar{height:65px;padding:0 18px}.topbar>div:first-of-type span{display:none}#menu-btn{display:block}.page{padding:25px 18px 95px}.dashboard-grid{grid-template-columns:1fr}.note-grid,.countdown-grid{grid-template-columns:repeat(2,1fr)}.course-grid{grid-template-columns:repeat(4,1fr)}.bottom-nav{position:fixed;z-index:15;left:0;right:0;bottom:0;display:flex;align-items:center;justify-content:space-around;padding:7px 7px calc(7px + env(safe-area-inset-bottom));background:rgba(255,255,255,.94);border-top:1px solid var(--line);backdrop-filter:blur(12px)}.bottom-nav button{min-width:58px;display:grid;place-items:center;gap:1px;border:0;background:transparent;color:var(--muted);font-size:10px}.bottom-nav button>span{font-size:19px}.bottom-nav button.active{color:var(--pink-dark)}.bottom-nav .fab{position:relative;top:-15px}.bottom-nav .fab span{display:grid;place-items:center;width:48px;height:48px;border-radius:18px;background:linear-gradient(145deg,var(--pink),#ff789e);color:#fff;box-shadow:0 8px 20px rgba(255,110,151,.3)}.admin-hero{align-items:stretch;gap:20px}.create-user{flex-direction:column}.profile-grid{grid-template-columns:1fr}.welcome-card{min-height:220px}}
@media(max-width:600px){.setup-card{padding:28px 20px}.form-grid{grid-template-columns:1fr}.form-grid>*{grid-column:1!important}.welcome-card{padding:28px}.welcome-card h1{font-size:33px}.peach-orbit{position:absolute;right:-53px;opacity:.65}.dashboard-grid{gap:14px}.page-head{align-items:start;gap:15px}.page-head h1{font-size:32px}.page-head>button{padding:11px;font-size:0}.page-head>button:first-letter{font-size:18px}.note-grid,.countdown-grid{grid-template-columns:1fr}.course-grid{display:flex;overflow-x:auto}.course-grid section{min-width:135px}.tool-tabs{margin-left:-4px;margin-right:-4px}.profile-grid{grid-template-columns:1fr}.two-cols{grid-template-columns:1fr}.admin-main{padding:28px 14px}.admin-hero{flex-direction:column}.create-user input{width:100%}.stat-grid{grid-template-columns:1fr 1fr}.stat-grid article:last-child{grid-column:1/-1}.key-reveal{align-items:flex-start;flex-direction:column}.key-reveal button{margin-left:0}.gpa-row{grid-template-columns:1.5fr 1fr 1fr 34px}.auth-card h2{font-size:29px}}