:root{
  --text:#2C2C2B; --text-2:#7D7A75; --canvas:#FFFFFF; --surface:#F9F8F7;
  --surface-2:#F0EFED; --border:#E6E5E3;
  --blue:#2783DE; --blue-soft:#E5F2FC;
  --green:#46A171; --green-soft:#E8F1EC;
  --orange:#D5803B; --orange-soft:#FBEBDE; --red:#E56458; --red-soft:#FCE9E7;
  --radius:12px; --radius-sm:8px;
  --shadow:0 1px 2px rgba(0,0,0,.05), 0 4px 12px rgba(0,0,0,.04);
  --maxw:720px; --tabbar-h:64px; --side-w:240px;
  --sans:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
}
/* Dark theme via explicit attribute OR system preference (when no explicit choice) */
:root[data-theme="dark"]{
  --text:#FFFFFF; --text-2:rgba(255,255,255,.65); --canvas:#191919; --surface:#202020;
  --surface-2:#383836; --border:rgba(255,255,255,.20);
  --blue:#5E9FE8; --blue-soft:rgba(94,159,232,.14); --green:#72BC8F; --green-soft:rgba(114,188,143,.16);
  --orange:#DE9255; --orange-soft:rgba(222,146,85,.16); --red:#E97366; --red-soft:rgba(233,115,102,.16);
  --shadow:0 1px 2px rgba(0,0,0,.3), 0 4px 12px rgba(0,0,0,.25);
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]):not([data-theme="dark"]){
    --text:#FFFFFF; --text-2:rgba(255,255,255,.65); --canvas:#191919; --surface:#202020;
    --surface-2:#383836; --border:rgba(255,255,255,.20);
    --blue:#5E9FE8; --blue-soft:rgba(94,159,232,.14); --green:#72BC8F; --green-soft:rgba(114,188,143,.16);
    --orange:#DE9255; --orange-soft:rgba(222,146,85,.16); --red:#E97366; --red-soft:rgba(233,115,102,.16);
    --shadow:0 1px 2px rgba(0,0,0,.3), 0 4px 12px rgba(0,0,0,.25);
  }
}
/* Accent color overrides the primary (green) token */
:root[data-accent="blue"]{--green:#2783DE; --green-soft:rgba(39,131,222,.14)}
:root[data-accent="orange"]{--green:#D5803B; --green-soft:rgba(213,128,59,.16)}
:root[data-accent="purple"]{--green:#8B5CF6; --green-soft:rgba(139,92,246,.16)}
:root[data-accent="pink"]{--green:#E0568A; --green-soft:rgba(224,86,138,.16)}

*{box-sizing:border-box;margin:0;padding:0}
html,body{height:100%}
body{font-family:var(--sans);font-size:16px;line-height:1.5;color:var(--text);background:var(--surface);-webkit-font-smoothing:antialiased}

#app{max-width:var(--maxw);margin:0 auto;min-height:100%;display:flex;flex-direction:column;background:var(--canvas)}
.sidebar{display:none}

.topbar{position:sticky;top:0;z-index:20;background:var(--canvas);border-bottom:1px solid var(--border)}
.topbar-inner{max-width:var(--maxw);margin:0 auto;display:flex;align-items:center;justify-content:space-between;padding:12px 20px}
.brand{display:flex;align-items:center;gap:8px;font-weight:700;font-size:18px}
.brand-logo{font-size:22px}
.icon-btn{width:40px;height:40px;border-radius:10px;border:1px solid var(--border);background:var(--surface);font-size:18px;cursor:pointer;color:var(--text)}
.icon-btn.on{background:var(--green-soft);border-color:var(--green)}

.view{flex:1;padding:20px 20px calc(var(--tabbar-h) + 28px);overflow-x:hidden}
.section-title{font-size:13px;font-weight:600;letter-spacing:.02em;text-transform:uppercase;color:var(--text-2);margin:24px 4px 12px}
.section-title:first-child{margin-top:4px}
.hello h1{font-size:26px;font-weight:700;line-height:1.2}
.hello p{color:var(--text-2);margin-top:4px}

.card{background:var(--canvas);border:1px solid var(--border);border-radius:var(--radius);padding:16px}
.card + .card{margin-top:12px}
.soft{background:var(--surface)}
.row{display:flex;align-items:center;gap:12px}
.between{justify-content:space-between}
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
@media(max-width:420px){.grid-3{grid-template-columns:1fr 1fr}}

.stat{padding:14px 16px}
.stat .k{font-size:12px;color:var(--text-2);font-weight:600}
.stat .v{font-size:24px;font-weight:700;margin-top:2px}
.stat .u{font-size:13px;color:var(--text-2);font-weight:500}

.habit{display:flex;align-items:center;gap:12px;padding:12px 4px;border-top:1px solid var(--border)}
.habit:first-of-type{border-top:none}
.check{width:28px;height:28px;min-width:28px;border-radius:50%;border:2px solid var(--border);background:transparent;cursor:pointer;display:grid;place-items:center;font-size:15px;color:#fff}
.check.done{background:var(--green);border-color:var(--green)}
.habit .name{flex:1;font-weight:500}
.habit .streak{font-size:12px;color:var(--text-2);background:var(--surface-2);padding:3px 8px;border-radius:20px}
.habit .del{opacity:.4;cursor:pointer;background:none;border:none;font-size:16px;color:var(--text)}

.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;min-height:44px;padding:10px 16px;border-radius:var(--radius-sm);border:1px solid var(--border);background:var(--surface);color:var(--text);font-size:15px;font-weight:600;cursor:pointer;font-family:inherit}
.btn.primary{background:var(--green);border-color:var(--green);color:#fff}
.btn.blue{background:var(--blue);border-color:var(--blue);color:#fff}
.btn.ghost{background:transparent}
.btn.full{width:100%}
.btn.sm{min-height:36px;padding:6px 12px;font-size:13px}
.btn:disabled{opacity:.6;cursor:default}

input,select,textarea{font-family:inherit;font-size:16px;color:var(--text);background:var(--canvas);border:1px solid var(--border);border-radius:var(--radius-sm);padding:10px 12px;width:100%}
textarea{resize:vertical;min-height:88px}
label{font-size:13px;font-weight:600;color:var(--text-2);display:block;margin-bottom:6px}
.field{margin-bottom:12px}

.scale{display:flex;gap:8px}
.scale button{flex:1;min-height:52px;border:1px solid var(--border);background:var(--surface);border-radius:var(--radius-sm);font-size:24px;cursor:pointer}
.scale button.sel{border-color:var(--green);background:var(--green-soft);transform:scale(1.03)}

.seg{display:flex;background:var(--surface-2);border-radius:10px;padding:4px;gap:4px;overflow-x:auto}
.seg button{flex:1;white-space:nowrap;border:none;background:transparent;padding:8px 12px;border-radius:8px;font-weight:600;font-size:14px;color:var(--text-2);cursor:pointer;font-family:inherit}
.seg button.sel{background:var(--canvas);color:var(--text);box-shadow:var(--shadow)}

.bar{height:8px;background:var(--surface-2);border-radius:20px;overflow:hidden}
.bar > i{display:block;height:100%;background:var(--green);border-radius:20px}
.bar.blue > i{background:var(--blue)}

.insight{border-left:3px solid var(--blue);background:var(--blue-soft);border-radius:var(--radius-sm);padding:14px 16px;margin-top:12px}
.insight.warn{border-color:var(--orange);background:var(--orange-soft)}
.insight.risk{border-color:var(--red);background:var(--red-soft)}
.insight.good{border-color:var(--green);background:var(--green-soft)}
.insight .h{font-weight:700;font-size:14px;margin-bottom:4px}
.insight .b{font-size:14px}
.insight .a{font-size:13px;margin-top:8px;font-weight:600}

.coach-msg{display:flex;gap:10px;margin-top:14px}
.coach-av{width:34px;height:34px;min-width:34px;border-radius:50%;background:var(--green-soft);display:grid;place-items:center;font-size:18px}
.coach-bubble{background:var(--surface);border:1px solid var(--border);border-radius:14px;border-top-left-radius:4px;padding:12px 14px;font-size:14.5px}

.empty{text-align:center;color:var(--text-2);padding:32px 16px;font-size:14px}
.chip{display:inline-block;font-size:12px;font-weight:600;padding:3px 10px;border-radius:20px;background:var(--surface-2);color:var(--text-2)}
.mini{font-size:12px;color:var(--text-2)}
.hr{height:1px;background:var(--border);margin:16px 0;border:none}

.spark{display:flex;align-items:flex-end;gap:6px;height:64px;margin-top:8px}
.spark > span{flex:1;background:var(--blue-soft);border-radius:4px 4px 0 0;position:relative;min-height:4px}
.spark > span > i{position:absolute;bottom:0;left:0;right:0;background:var(--blue);border-radius:4px 4px 0 0}
.spark-x{display:flex;gap:6px;margin-top:4px}
.spark-x > span{flex:1;text-align:center;font-size:10px;color:var(--text-2)}

.tabbar{position:fixed;bottom:0;left:0;right:0;height:var(--tabbar-h);background:var(--canvas);border-top:1px solid var(--border);display:flex;z-index:20;padding-bottom:env(safe-area-inset-bottom);max-width:var(--maxw);margin:0 auto}
.tab{flex:1;border:none;background:none;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;font-size:11px;font-weight:600;color:var(--text-2);cursor:pointer;font-family:inherit}
.tab .tab-ico{font-size:20px;filter:grayscale(1);opacity:.7}
.tab.active{color:var(--green)}
.tab.active .tab-ico{filter:none;opacity:1}

.toast{position:fixed;left:50%;bottom:calc(var(--tabbar-h) + 16px);transform:translateX(-50%) translateY(20px);background:var(--text);color:var(--canvas);padding:10px 18px;border-radius:24px;font-size:14px;font-weight:500;opacity:0;pointer-events:none;transition:.25s;z-index:50;max-width:90%}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}

.add-inline{display:flex;gap:8px;margin-top:12px}
.add-inline input{flex:1}

/* swatches */
.swatches{display:flex;gap:10px;flex-wrap:wrap;margin-top:8px}
.swatch{width:34px;height:34px;border-radius:50%;border:2px solid var(--border);cursor:pointer}
.swatch.sel{box-shadow:0 0 0 2px var(--canvas),0 0 0 4px var(--text)}

/* ===== AUTH SCREEN ===== */
.auth{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:24px;background:var(--surface)}
.auth-card{width:100%;max-width:380px;background:var(--canvas);border:1px solid var(--border);border-radius:16px;padding:28px 26px;box-shadow:var(--shadow)}
.auth-brand{display:flex;align-items:center;gap:8px;font-weight:700;font-size:22px;justify-content:center}
.auth-brand .brand-logo{font-size:26px}
.auth-sub{text-align:center;color:var(--text-2);margin:8px 0 22px;font-size:14px}
.auth-form .field{margin-bottom:14px}
.auth-err{background:var(--red-soft);color:var(--red);border-radius:8px;padding:10px 12px;font-size:13px;margin-bottom:12px}
.auth-note{margin-top:16px;text-align:center;font-size:13px;color:var(--text-2);background:var(--surface-2);padding:10px 12px;border-radius:8px}
.auth-toggle{text-align:center;margin-top:18px;font-size:14px;color:var(--text-2)}
.auth-toggle a{color:var(--green);font-weight:600;cursor:pointer}

/* ===== DESKTOP LAYOUT ===== */
@media(min-width:900px){
  body{background:var(--surface)}
  #app{max-width:1140px;margin:24px auto;display:grid;grid-template-columns:var(--side-w) 1fr;min-height:calc(100vh - 48px);border:1px solid var(--border);border-radius:18px;overflow:hidden;box-shadow:var(--shadow)}
  .sidebar{display:flex;flex-direction:column;background:var(--canvas);border-right:1px solid var(--border);padding:22px 16px}
  .sidebar .brand{font-size:19px;padding:0 8px 8px}
  .sidenav{display:flex;flex-direction:column;gap:4px;margin-top:18px;flex:1}
  .navitem{display:flex;align-items:center;gap:12px;padding:11px 12px;border-radius:10px;border:none;background:none;color:var(--text-2);font-weight:600;font-size:15px;cursor:pointer;font-family:inherit;text-align:left;width:100%}
  .navitem .ico{font-size:18px;width:22px;text-align:center}
  .navitem:hover{background:var(--surface)}
  .navitem.active{background:var(--green-soft);color:var(--green)}
  .side-foot{border-top:1px solid var(--border);padding-top:14px;margin-top:8px}
  .side-user{font-size:13px;padding:0 8px}
  .main{display:flex;flex-direction:column;min-width:0;background:var(--canvas)}
  .topbar .brand{display:none}
  .topbar-inner{max-width:none;justify-content:flex-end;padding:14px 24px}
  .view{padding:12px 32px 40px;max-width:860px;width:100%;margin:0 auto}
  .tabbar{display:none}
  .toast{bottom:24px}
  .grid-3{grid-template-columns:repeat(3,1fr)}
}
@media(min-width:900px){ .navitem{position:relative} }

/* ===== v2.2.0 additions ===== */
.ready .ring{width:76px;height:76px;border-radius:50%;display:grid;place-items:center;flex:0 0 auto}
.ready .ring-in{width:60px;height:60px;border-radius:50%;background:var(--canvas);display:grid;place-items:center;text-align:center;line-height:1}
.ready .ring-in b{font-size:22px;display:block}
.ready .ring-in span{font-size:10px;color:var(--text-2)}
.ready-parts{margin-top:14px;display:flex;flex-direction:column;gap:8px}
.rp{display:grid;grid-template-columns:70px 1fr;align-items:center;gap:10px}
.bar.sm{height:6px}
.chips{display:flex;flex-wrap:wrap;gap:8px}
.chip-btn{border:1px solid var(--border);background:var(--canvas);color:var(--text);border-radius:999px;padding:7px 12px;font-size:13px;font-weight:600;cursor:pointer;font-family:inherit}
.chip-btn:hover{background:var(--surface)}
.chip-btn.on{background:var(--green-soft);border-color:var(--green);color:var(--green)}
.pill{display:inline-block;background:var(--surface-2);color:var(--text-2);border-radius:999px;padding:3px 9px;font-size:11px;font-weight:600}
.chip.bad{background:var(--red-soft);color:var(--red)}
.scale.sm button{font-size:15px;font-weight:700;min-width:0}
.checkin input{width:100%;border:1px solid var(--border);border-radius:8px;padding:10px 12px;font-size:14px;font-family:inherit;background:var(--canvas);color:var(--text)}
.habit.count{flex-wrap:wrap}
.habit.count .stp{border:1px solid var(--border);background:var(--canvas);color:var(--text);border-radius:8px;width:30px;height:30px;font-size:16px;cursor:pointer;font-family:inherit}
.habit.count .stp:hover{background:var(--surface)}
.bookrow{padding:10px 0;border-bottom:1px solid var(--border)}
.bookrow:last-child{border-bottom:none}
.bookrow .sum{width:100%;margin-top:8px;border:1px solid var(--border);border-radius:8px;padding:8px 10px;font-size:13px;font-family:inherit;background:var(--canvas);color:var(--text)}
.kh-list{display:flex;flex-direction:column;gap:8px}
.kh{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--text);cursor:pointer}
.srs{background:var(--surface);border:1px solid var(--border);border-radius:12px;padding:22px;text-align:center}
.srs-word{font-size:24px;font-weight:700}
.srs-meaning{margin-top:10px;color:var(--text-2);font-size:15px}