/* ============================================================ tokens */
:root{
  --bg:#0b0d12;
  --bg-2:#0f1219;
  --surface:rgba(255,255,255,.045);
  --surface-2:rgba(255,255,255,.07);
  --line:rgba(255,255,255,.09);
  --line-2:rgba(255,255,255,.16);
  --text:#e9ecf5;
  --muted:#8b93a9;
  --faint:#5d6478;

  --violet:#8b5cf6; --indigo:#6366f1; --sky:#38bdf8;
  --emerald:#34d399; --amber:#fbbf24; --orange:#fb923c;
  --rose:#fb7185;   --red:#f87171;

  --accent:var(--violet);
  --accent-soft:rgba(139,92,246,.16);

  --r:18px; --r-sm:12px; --r-lg:26px;
  --ease:cubic-bezier(.22,1,.36,1);
  --ease-in-out:cubic-bezier(.65,0,.35,1);
  --spring:cubic-bezier(.34,1.56,.64,1);
  --shadow:0 18px 40px -18px rgba(0,0,0,.85);
  --safe-b:env(safe-area-inset-bottom,0px);
}
/* Per-section accents, set on <body data-accent="..."> */
body[data-accent="today"]    {--accent:var(--violet); --accent-soft:rgba(139,92,246,.16)}
body[data-accent="tasks"]    {--accent:var(--indigo); --accent-soft:rgba(99,102,241,.16)}
body[data-accent="habits"]   {--accent:var(--emerald);--accent-soft:rgba(52,211,153,.15)}
body[data-accent="courses"]  {--accent:var(--amber); --accent-soft:rgba(251,191,36,.15)}
body[data-accent="timetable"]{--accent:var(--sky);   --accent-soft:rgba(56,189,248,.15)}
body[data-accent="workout"]  {--accent:var(--orange);--accent-soft:rgba(251,146,60,.15)}

/* Colour classes used by chips, dots and bars */
.c-violet{--c:var(--violet)} .c-indigo{--c:var(--indigo)} .c-sky{--c:var(--sky)}
.c-emerald{--c:var(--emerald)} .c-amber{--c:var(--amber)} .c-orange{--c:var(--orange)}
.c-rose{--c:var(--rose)} .c-red{--c:var(--red)}

*,*::before,*::after{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0; background:var(--bg); color:var(--text);
  font:15px/1.55 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  -webkit-font-smoothing:antialiased; overscroll-behavior-y:none;
}
/* Two soft light sources so the flat black has some depth. */
body::before{
  content:""; position:fixed; inset:0; z-index:-1; pointer-events:none;
  background:
    radial-gradient(60rem 40rem at 12% -10%, color-mix(in srgb,var(--accent) 16%, transparent), transparent 60%),
    radial-gradient(46rem 34rem at 105% 8%, rgba(56,189,248,.07), transparent 62%);
  transition:background .7s var(--ease);
}
h1,h2,h3{margin:0; font-weight:650; letter-spacing:-.02em}
p{margin:0}
button,input,select,textarea{font:inherit; color:inherit}
.muted{color:var(--muted)} .small{font-size:13px}
.ic{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
[hidden]{display:none !important}

/* ============================================================ lock */
.lock{position:fixed; inset:0; display:grid; place-items:center; padding:24px; z-index:60}
.lock-card{
  width:min(380px,100%); text-align:center; padding:34px 26px 28px;
  background:linear-gradient(180deg,rgba(255,255,255,.06),rgba(255,255,255,.025));
  border:1px solid var(--line); border-radius:var(--r-lg); box-shadow:var(--shadow);
  animation:pop .6s var(--spring) both;
}
.lock-orb{
  width:76px;height:76px;margin:0 auto 18px;border-radius:24px;display:grid;place-items:center;
  font-size:34px; background:linear-gradient(145deg,rgba(139,92,246,.35),rgba(56,189,248,.18));
  border:1px solid var(--line-2); animation:float 5s var(--ease-in-out) infinite;
}
.lock h1{font-size:22px;margin-bottom:6px}
.lock form{margin-top:22px; display:grid; gap:10px}
.lock input{
  width:100%; padding:14px 16px; background:rgba(0,0,0,.28); border:1px solid var(--line);
  border-radius:14px; outline:none; text-align:center; letter-spacing:.12em;
  transition:border-color .25s,box-shadow .25s,background .25s;
}
.lock input:focus{border-color:var(--accent); box-shadow:0 0 0 4px var(--accent-soft); background:rgba(0,0,0,.4)}
.lock-err{min-height:18px;font-size:13px;color:var(--red)}
.shake{animation:shake .45s var(--ease-in-out)}

/* ============================================================ buttons */
.btn{
  position:relative; display:inline-flex; align-items:center; justify-content:center; gap:8px;
  padding:12px 18px; border-radius:14px; border:1px solid var(--line);
  background:var(--surface); cursor:pointer; font-weight:600; overflow:hidden;
  transition:transform .18s var(--spring), background .2s, border-color .2s, opacity .2s;
  -webkit-tap-highlight-color:transparent;
}
.btn:hover{background:var(--surface-2)}
.btn:active{transform:scale(.96)}
.btn.primary{
  background:linear-gradient(135deg,var(--accent),color-mix(in srgb,var(--accent) 55%, #000));
  border-color:transparent; color:#fff;
  box-shadow:0 10px 24px -12px color-mix(in srgb,var(--accent) 90%, transparent);
}
.btn.primary:hover{filter:brightness(1.08)}
.btn.block{width:100%} .btn.grow{flex:1}
.btn.ghost{background:transparent}
.btn.danger{color:var(--red); border-color:rgba(248,113,113,.3)}
.btn.danger:hover{background:rgba(248,113,113,.1)}
.btn[disabled]{opacity:.55; pointer-events:none}
.icon-btn{
  display:grid;place-items:center;width:38px;height:38px;border-radius:12px;
  border:1px solid var(--line); background:var(--surface); cursor:pointer;
  transition:transform .18s var(--spring), background .2s;
}
.icon-btn:hover{background:var(--surface-2)} .icon-btn:active{transform:scale(.9)}

/* ============================================================ layout */
.app{min-height:100%; display:flex}
.rail{
  display:none; width:216px; flex-shrink:0; padding:22px 14px;
  border-right:1px solid var(--line); position:sticky; top:0; height:100vh;
  flex-direction:column; gap:6px;
}
.rail-brand{display:flex;align-items:center;gap:10px;padding:6px 10px 20px;font-size:17px}
.rail-logo{font-size:22px}
.rail-nav{display:grid;gap:4px}
.rail-out{
  margin-top:auto; display:flex; align-items:center; gap:10px; padding:11px 12px;
  border-radius:12px; border:0; background:transparent; color:var(--muted); cursor:pointer;
  transition:background .2s,color .2s;
}
.rail-out:hover{background:var(--surface); color:var(--text)}
.nav-item{
  display:flex; align-items:center; gap:11px; padding:11px 12px; border-radius:12px;
  border:0; background:transparent; color:var(--muted); cursor:pointer; font-weight:600;
  text-align:left; width:100%; position:relative; transition:color .22s, background .22s;
}
.nav-item .em{font-size:17px; width:22px; text-align:center; transition:transform .3s var(--spring)}
.nav-item:hover{background:var(--surface); color:var(--text)}
.nav-item.on{color:var(--text); background:var(--accent-soft)}
.nav-item.on .em{transform:scale(1.18)}
.nav-item.on::before{
  content:""; position:absolute; left:-14px; top:50%; translate:0 -50%;
  width:3px; height:20px; border-radius:0 3px 3px 0; background:var(--accent);
  animation:growY .3s var(--ease) both;
}

.main{flex:1; min-width:0; padding:0 16px calc(112px + var(--safe-b)); max-width:1000px; margin:0 auto; width:100%}
.topbar{
  position:sticky; top:0; z-index:20; display:flex; align-items:center; justify-content:space-between;
  gap:12px; padding:20px 0 14px; background:linear-gradient(var(--bg) 62%, transparent);
  backdrop-filter:blur(6px);
}
.topbar h1{font-size:26px}

/* ============================================================ tabbar */
.tabbar{
  position:fixed; left:12px; right:12px; bottom:calc(10px + var(--safe-b)); z-index:40;
  display:flex; justify-content:space-around; gap:2px; padding:7px;
  background:rgba(16,19,26,.82); backdrop-filter:blur(20px) saturate(1.6);
  border:1px solid var(--line); border-radius:22px; box-shadow:var(--shadow);
}
.tab{
  flex:1; display:grid; place-items:center; gap:3px; padding:7px 2px; border:0; border-radius:15px;
  background:transparent; color:var(--faint); cursor:pointer; font-size:10px; font-weight:600;
  position:relative; transition:color .25s; -webkit-tap-highlight-color:transparent;
}
.tab .em{font-size:19px; transition:transform .35s var(--spring)}
.tab.on{color:var(--text)}
.tab.on .em{transform:translateY(-2px) scale(1.16)}
.tab.on::before{
  content:""; position:absolute; inset:0; border-radius:15px; background:var(--accent-soft);
  animation:pop .35s var(--spring) both; z-index:-1;
}

/* ============================================================ fab */
.fab{
  position:fixed; right:18px; bottom:calc(84px + var(--safe-b)); z-index:45;
  width:56px; height:56px; border-radius:20px; border:0; cursor:pointer; color:#fff;
  display:grid; place-items:center;
  background:linear-gradient(135deg,var(--accent),color-mix(in srgb,var(--accent) 50%,#000));
  box-shadow:0 14px 30px -10px color-mix(in srgb,var(--accent) 85%, transparent);
  transition:transform .25s var(--spring), background .4s, opacity .2s;
  animation:pop .4s var(--spring) both;
}
.fab .ic{width:24px;height:24px;stroke-width:2.4}
.fab:hover{transform:scale(1.07) rotate(90deg)}
.fab:active{transform:scale(.92) rotate(90deg)}

/* ============================================================ cards */
.card{
  background:var(--surface); border:1px solid var(--line); border-radius:var(--r);
  padding:16px; transition:border-color .25s, background .25s, transform .25s var(--ease);
}
.card:hover{border-color:var(--line-2)}
.grid{display:grid; gap:12px}
.g2{grid-template-columns:repeat(auto-fit,minmax(min(100%,230px),1fr))}
.row{display:flex; align-items:center; gap:12px}
.between{justify-content:space-between}
.wrap{flex-wrap:wrap}
.sec-head{display:flex;align-items:baseline;justify-content:space-between;gap:12px;margin:22px 2px 12px}
.sec-head h2{font-size:15px; color:var(--muted); font-weight:650; letter-spacing:.01em}
.sec-head .n{font-size:12px; color:var(--faint)}

.empty{
  text-align:center; padding:44px 20px; color:var(--faint);
  border:1px dashed var(--line); border-radius:var(--r); animation:fade .4s var(--ease) both;
}
.empty .big{font-size:36px; display:block; margin-bottom:10px; animation:float 4s var(--ease-in-out) infinite}

/* ============================================================ stats */
/* Two columns even on a narrow phone — stacking all four made the Today
   screen scroll before it showed anything useful. The habits ring and the
   workout name carry longer text, so they take the full row. */
.stats{display:grid; grid-template-columns:1fr 1fr; gap:12px}
.stats .span2{grid-column:1/-1}
@media (min-width:700px){
  .stats{grid-template-columns:1.6fr 1fr 1fr 1.4fr}
  .stats .span2{grid-column:auto}
}
.stat{
  padding:15px; border-radius:var(--r); border:1px solid var(--line);
  background:linear-gradient(150deg,color-mix(in srgb,var(--c,var(--accent)) 15%,transparent),var(--surface));
  position:relative; overflow:hidden;
}
.stat .k{font-size:12px;color:var(--muted);font-weight:600}
.stat .v{font-size:27px;font-weight:700;letter-spacing:-.03em;margin-top:2px; font-variant-numeric:tabular-nums}
.stat .em{position:absolute; right:10px; top:9px; font-size:22px; opacity:.55}

/* ============================================================ ring */
.ring{--p:0; width:58px;height:58px;flex-shrink:0; position:relative; display:grid; place-items:center}
.ring svg{position:absolute; inset:0; transform:rotate(-90deg)}
.ring circle{fill:none; stroke-width:5; stroke-linecap:round}
.ring .bg{stroke:rgba(255,255,255,.09)}
.ring .fg{
  stroke:var(--c,var(--accent)); stroke-dasharray:157;
  stroke-dashoffset:calc(157 - 157 * var(--p) / 100);
  transition:stroke-dashoffset 1s var(--ease);
}
.ring b{font-size:13px; font-variant-numeric:tabular-nums}

/* ============================================================ list rows */
.item{
  display:flex; align-items:flex-start; gap:12px; padding:13px 14px; border-radius:var(--r-sm);
  background:var(--surface); border:1px solid var(--line);
  transition:background .22s, border-color .22s, opacity .3s, transform .3s var(--ease);
}
.item:hover{background:var(--surface-2)}
.item.done{opacity:.45}
.item.done .t{text-decoration:line-through; text-decoration-color:var(--muted)}
.item .t{font-weight:550; word-break:break-word}
.item .meta{font-size:12px; color:var(--faint); margin-top:3px; display:flex; gap:8px; flex-wrap:wrap; align-items:center}
.item .grow{flex:1; min-width:0}
.leaving{animation:leave .32s var(--ease-in-out) forwards}

.check{
  flex-shrink:0; width:23px; height:23px; margin-top:1px; border-radius:8px; cursor:pointer;
  border:2px solid var(--line-2); background:transparent; display:grid; place-items:center;
  transition:background .25s var(--ease), border-color .25s, transform .2s var(--spring);
  -webkit-tap-highlight-color:transparent;
}
.check:active{transform:scale(.84)}
.check svg{width:13px;height:13px;stroke:#0b0d12;stroke-width:3.4;fill:none;
  stroke-linecap:round;stroke-linejoin:round;
  stroke-dasharray:20; stroke-dashoffset:20; transition:stroke-dashoffset .3s var(--ease) .05s}
.check.on{background:var(--c,var(--accent)); border-color:var(--c,var(--accent))}
.check.on svg{stroke-dashoffset:0}
.check.on{animation:checkPop .4s var(--spring)}

.chip{
  display:inline-flex; align-items:center; gap:5px; padding:3px 9px; border-radius:999px;
  font-size:11px; font-weight:650; background:color-mix(in srgb,var(--c,var(--accent)) 17%, transparent);
  color:color-mix(in srgb,var(--c,var(--accent)) 82%, #fff); white-space:nowrap;
}
.chip.late{background:rgba(248,113,113,.16); color:#fca5a5}
.dot{width:8px;height:8px;border-radius:50%;background:var(--c,var(--accent));flex-shrink:0}

.bar{height:7px;border-radius:99px;background:rgba(255,255,255,.08);overflow:hidden}
.bar i{display:block;height:100%;border-radius:99px;background:var(--c,var(--accent));width:0;
  transition:width .9s var(--ease)}

/* ============================================================ habits */
.habit{
  display:flex; align-items:center; gap:13px; padding:13px 14px; border-radius:var(--r-sm);
  background:var(--surface); border:1px solid var(--line); cursor:pointer;
  transition:background .22s, border-color .22s, transform .22s var(--ease);
  -webkit-tap-highlight-color:transparent; text-align:left; width:100%;
}
.habit:active{transform:scale(.985)}
.habit.on{border-color:color-mix(in srgb,var(--c) 45%, transparent);
  background:color-mix(in srgb,var(--c) 10%, var(--surface))}
.habit .hemo{
  width:40px;height:40px;flex-shrink:0;border-radius:13px;display:grid;place-items:center;font-size:19px;
  background:color-mix(in srgb,var(--c) 16%, transparent); transition:transform .35s var(--spring);
}
.habit.on .hemo{transform:scale(1.08) rotate(-6deg)}
.streak{display:inline-flex;align-items:center;gap:4px;font-size:12px;font-weight:700;color:var(--amber)}
.streak.zero{color:var(--faint)}
.dots{display:flex;gap:4px;margin-top:6px}
.dots i{width:6px;height:6px;border-radius:50%;background:rgba(255,255,255,.13)}
.dots i.f{background:var(--c)}
.dots i.t{box-shadow:0 0 0 2px color-mix(in srgb,var(--c) 35%,transparent)}

/* ============================================================ timetable */
.day-tabs{display:flex; gap:6px; overflow-x:auto; padding:2px 0 10px; scrollbar-width:none}
.day-tabs::-webkit-scrollbar{display:none}
.day-tab{
  flex:0 0 auto; padding:8px 15px; border-radius:13px; border:1px solid var(--line);
  background:var(--surface); color:var(--muted); cursor:pointer; font-weight:600; font-size:13px;
  transition:all .22s var(--ease);
}
.day-tab.on{background:var(--accent); border-color:transparent; color:#fff}
.day-tab.today::after{content:"•"; margin-left:5px; color:var(--accent)}
.day-tab.on.today::after{color:#fff}
.slot{
  display:flex; gap:13px; padding:13px 14px; border-radius:var(--r-sm);
  background:var(--surface); border:1px solid var(--line); border-left:3px solid var(--c,var(--accent));
  transition:background .22s;
}
.slot:hover{background:var(--surface-2)}
.slot .time{flex-shrink:0; width:52px; font-size:13px; font-weight:700; font-variant-numeric:tabular-nums}
.slot .time span{display:block; font-size:11px; font-weight:500; color:var(--faint)}
.slot.now{box-shadow:0 0 0 1px color-mix(in srgb,var(--c) 50%,transparent)}
.slot.now .time{color:var(--c)}

/* ============================================================ sheet */
.sheet-wrap{position:fixed; inset:0; z-index:70; display:flex; align-items:flex-end; justify-content:center}
.sheet-bg{position:absolute; inset:0; background:rgba(4,6,10,.66); backdrop-filter:blur(5px);
  animation:fade .28s var(--ease) both}
.sheet{
  position:relative; width:min(520px,100%); max-height:88vh; overflow-y:auto;
  background:var(--bg-2); border:1px solid var(--line); border-bottom:0;
  border-radius:var(--r-lg) var(--r-lg) 0 0; padding:10px 20px calc(20px + var(--safe-b));
  animation:slideUp .4s var(--ease) both; box-shadow:var(--shadow);
}
.sheet-grip{width:38px;height:4px;border-radius:99px;background:var(--line-2);margin:0 auto 12px}
.sheet-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:16px}
.sheet-head h2{font-size:19px}
.sheet-foot{display:flex;gap:10px;margin-top:22px}
.field{margin-bottom:13px}
.field label{display:block;font-size:12px;font-weight:650;color:var(--muted);margin-bottom:6px}
.field input,.field select,.field textarea{
  width:100%; padding:12px 14px; background:rgba(0,0,0,.26); border:1px solid var(--line);
  border-radius:13px; outline:none; transition:border-color .22s, box-shadow .22s;
}
.field textarea{resize:vertical; min-height:74px}
.field input:focus,.field select:focus,.field textarea:focus{
  border-color:var(--accent); box-shadow:0 0 0 4px var(--accent-soft);
}
.field select{appearance:none; background-image:
  linear-gradient(45deg,transparent 50%,var(--muted) 50%),linear-gradient(135deg,var(--muted) 50%,transparent 50%);
  background-position:calc(100% - 19px) 51%, calc(100% - 14px) 51%;
  background-size:5px 5px, 5px 5px; background-repeat:no-repeat}
.two{display:grid; grid-template-columns:1fr 1fr; gap:10px}
.picks{display:flex; gap:7px; flex-wrap:wrap}
.pick{
  padding:8px 13px; border-radius:11px; border:1px solid var(--line); background:var(--surface);
  cursor:pointer; font-size:13px; font-weight:600; color:var(--muted);
  transition:all .2s var(--ease);
}
.pick.on{background:var(--accent-soft); border-color:var(--accent); color:var(--text)}
.pick:active{transform:scale(.94)}
.swatch{width:32px;height:32px;border-radius:10px;border:2px solid transparent;background:var(--c);
  cursor:pointer; transition:transform .2s var(--spring), border-color .2s; opacity:.5}
.swatch.on{border-color:#fff; opacity:1; transform:scale(1.1)}

/* ============================================================ toast */
.toast{
  position:fixed; left:50%; bottom:calc(150px + var(--safe-b)); translate:-50% 0; z-index:90;
  padding:11px 18px; border-radius:14px; font-size:13px; font-weight:600;
  background:rgba(22,26,35,.95); border:1px solid var(--line-2); box-shadow:var(--shadow);
  opacity:0; pointer-events:none; transition:opacity .3s, translate .35s var(--spring);
}
.toast.show{opacity:1; translate:-50% -10px}

/* ============================================================ motion */
@keyframes fade{from{opacity:0} to{opacity:1}}
@keyframes pop{from{opacity:0; transform:scale(.9)} to{opacity:1; transform:scale(1)}}
@keyframes slideUp{from{opacity:0; transform:translateY(40px)} to{opacity:1; transform:translateY(0)}}
@keyframes growY{from{transform:translateY(-50%) scaleY(0)} to{transform:translateY(-50%) scaleY(1)}}
@keyframes float{0%,100%{transform:translateY(0)} 50%{transform:translateY(-7px)}}
@keyframes shake{0%,100%{transform:translateX(0)}20%{transform:translateX(-9px)}
  40%{transform:translateX(8px)}60%{transform:translateX(-5px)}80%{transform:translateX(4px)}}
@keyframes checkPop{0%{transform:scale(1)}45%{transform:scale(1.22)}100%{transform:scale(1)}}
@keyframes leave{to{opacity:0; transform:translateX(28px) scale(.96); max-height:0;
  padding-top:0; padding-bottom:0; margin-bottom:-12px}}
@keyframes rise{from{opacity:0; transform:translateY(14px)} to{opacity:1; transform:translateY(0)}}

/* Children of a freshly shown view rise in sequence. */
.view.in > *{animation:rise .5s var(--ease) both; animation-delay:calc(var(--i,0) * 45ms)}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms !important; animation-iteration-count:1 !important;
    transition-duration:.01ms !important}
}

/* ============================================================ desktop */
.only-mobile{display:grid}
@media (min-width:860px){
  .rail{display:flex}
  .tabbar{display:none}
  .only-mobile{display:none}
  .main{padding:0 30px 60px; max-width:none}
  .fab{right:30px; bottom:30px}
  .topbar{padding:26px 0 16px}
  .topbar h1{font-size:30px}
}
