/* ======================================================================
   NUCLEAR-ZONE — nz-dash.css
   Shared skin for the tutor dashboard and the student dashboard.
   Same tokens as the website, but tightened into a worksheet: hairline
   grid, monospace numbers, one bright dot doing all the talking.
   ====================================================================== */

:root{
  --void:#080E22;
  --navy:#101B3B;
  --navy-2:#16234A;
  --ink:#0F1A2E;
  --slate:#586887;
  --slate-2:#8A97AE;
  --paper:#F4F7FB;
  --white:#FFFFFF;
  --beam:#00CFE8;
  --beam-deep:#0091A8;
  --flame:#FF8A3C;
  --line:#E2E8F1;
  --line-dark:rgba(255,255,255,.12);

  --pending:#FFC53D;
  --accepted:#2FBF71;
  --missed:#FF4D4D;
  --done:#00CFE8;
  --declined:#8A97AE;

  --display:'Space Grotesk','Helvetica Neue',Arial,sans-serif;
  --body:'Figtree',system-ui,-apple-system,'Segoe UI',sans-serif;
  --mono:'JetBrains Mono',ui-monospace,'Courier New',monospace;

  --pad:clamp(1rem,3vw,2.2rem);
  --r:12px;
  --ease:cubic-bezier(.22,.9,.28,1);
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;font-family:var(--body);font-size:.97rem;line-height:1.6;
  color:var(--ink);background:var(--paper);
}
/* the lab-bench grid, same as the website */
body::before{
  content:"";position:fixed;inset:0;z-index:-1;pointer-events:none;
  background-image:
    linear-gradient(rgba(88,104,135,.08) 1px,transparent 1px),
    linear-gradient(90deg,rgba(88,104,135,.08) 1px,transparent 1px);
  background-size:32px 32px;
}

h1,h2,h3{font-family:var(--display);font-weight:700;letter-spacing:-.025em;line-height:1.1;margin:0}
h1{font-size:clamp(1.5rem,1.1rem + 1.4vw,2.1rem)}
h2{font-size:1.24rem}
h3{font-size:1.02rem;letter-spacing:-.015em}
p{margin:0 0 .8rem}
a{color:var(--beam-deep)}

.wrap{width:100%;max-width:1440px;margin-inline:auto;padding-inline:var(--pad)}
.mono{font-family:var(--mono);font-variant-numeric:tabular-nums}
.eyebrow{
  font-family:var(--mono);font-size:.68rem;font-weight:500;letter-spacing:.2em;
  text-transform:uppercase;color:var(--beam);margin:0 0 .35rem;
}

/* ============================================================== masthead */
.top{
  background:var(--void);color:#fff;position:sticky;top:0;z-index:40;
  border-bottom:1px solid var(--line-dark);
}
.top__in{display:flex;align-items:center;gap:1rem;min-height:66px;flex-wrap:wrap;padding-block:.55rem}
.brand{display:flex;align-items:center;gap:.65rem;text-decoration:none;color:#fff}
.brand svg{width:34px;height:34px;flex:none}
.brand b{font-family:var(--display);font-weight:700;letter-spacing:-.02em;font-size:1.02rem}
.brand span{opacity:.62;font-weight:500}
.brand small{display:block;font-family:var(--mono);font-size:.6rem;letter-spacing:.16em;
  text-transform:uppercase;color:var(--beam);opacity:.85;font-weight:500}
.top__spacer{flex:1 1 auto}
.who{
  font-family:var(--mono);font-size:.72rem;letter-spacing:.06em;color:#B9C6DC;
  display:flex;align-items:center;gap:.5rem;
}
.who b{color:#fff;font-weight:600;letter-spacing:0;font-family:var(--body)}

/* ================================================================= tabs */
.tabs{display:flex;gap:.15rem;flex-wrap:wrap;border-bottom:1px solid var(--line-dark);background:var(--void)}
.tabs .wrap{display:flex;gap:.15rem;flex-wrap:wrap}
.tab{
  appearance:none;background:none;border:0;cursor:pointer;color:#93A2BC;
  font-family:var(--display);font-weight:600;font-size:.92rem;
  padding:.7rem 1rem;border-bottom:2px solid transparent;margin-bottom:-1px;
  display:inline-flex;align-items:center;gap:.45rem;
}
.tab:hover{color:#fff}
.tab[aria-selected="true"]{color:#fff;border-bottom-color:var(--flame)}
.tab .pip{
  font-family:var(--mono);font-size:.66rem;font-weight:700;background:var(--flame);color:#2A1200;
  border-radius:99px;padding:.05rem .38rem;line-height:1.5;
}

/* =============================================================== layout */
main{padding-block:clamp(1.2rem,3vw,2rem) 4rem}
.panel{display:none}
.panel.on{display:block}
.head{display:flex;align-items:flex-end;gap:1rem;flex-wrap:wrap;margin-bottom:1.1rem}
.head p{color:var(--slate);margin:.3rem 0 0;max-width:62ch;font-size:.92rem}
.head__spacer{flex:1 1 auto}

/* ================================================================ cards */
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(168px,1fr));gap:.7rem;margin-bottom:1.3rem}
.card{
  background:var(--white);border:1px solid var(--line);border-radius:var(--r);
  padding:.85rem .95rem;position:relative;overflow:hidden;
}
.card::after{content:"";position:absolute;inset:0 auto 0 0;width:3px;background:var(--beam);opacity:.5}
.card--flame::after{background:var(--flame);opacity:.75}
.card--green::after{background:var(--accepted)}
.card--red::after{background:var(--missed)}
.card .k{font-family:var(--mono);font-size:.65rem;letter-spacing:.14em;text-transform:uppercase;color:var(--slate)}
.card .v{font-family:var(--display);font-weight:700;font-size:1.5rem;letter-spacing:-.03em;
  font-variant-numeric:tabular-nums;margin-top:.15rem}
.card .s{font-size:.78rem;color:var(--slate)}

/* ================================================================= dots */
.dot{
  width:11px;height:11px;border-radius:50%;flex:none;display:inline-block;
  background:var(--slate-2);position:relative;
}
.dot--pending{background:var(--pending);box-shadow:0 0 0 3px rgba(255,197,61,.22)}
.dot--accepted{background:var(--accepted);box-shadow:0 0 0 3px rgba(47,191,113,.2)}
.dot--missed{background:var(--missed);box-shadow:0 0 0 3px rgba(255,77,77,.2)}
.dot--done{background:var(--done);box-shadow:0 0 0 3px rgba(0,207,232,.2)}
.dot--declined{background:var(--declined);box-shadow:0 0 0 3px rgba(138,151,174,.18)}
/* the one flourish: a pending lesson breathes, because it wants an answer */
.dot--pending::after{
  content:"";position:absolute;inset:-3px;border-radius:50%;
  border:1px solid var(--pending);animation:ping 2.4s var(--ease) infinite;
}
@keyframes ping{0%{transform:scale(.9);opacity:.9}70%,100%{transform:scale(2);opacity:0}}

.key{display:flex;gap:1rem;flex-wrap:wrap;font-size:.8rem;color:var(--slate);margin:.2rem 0 1rem}
.key span{display:inline-flex;align-items:center;gap:.4rem}

/* ============================================================== sheet */
.sheet{
  background:var(--white);border:1px solid var(--line);border-radius:var(--r);
  overflow:auto;max-height:70vh;position:relative;
}
table{border-collapse:separate;border-spacing:0;width:100%;min-width:1040px;font-size:.88rem}
thead th{
  position:sticky;top:0;z-index:3;background:var(--navy);color:#DCE6F5;text-align:left;
  font-family:var(--mono);font-size:.64rem;letter-spacing:.13em;text-transform:uppercase;font-weight:500;
  padding:.6rem .55rem;border-bottom:1px solid var(--navy-2);white-space:nowrap;
}
thead th.num{text-align:right}
tbody td{
  padding:0;border-bottom:1px solid var(--line);border-right:1px solid var(--line);
  vertical-align:middle;background:var(--white);
}
tbody tr:nth-child(even) td{background:#FAFCFE}
tbody tr:hover td{background:#F0F7FC}
tbody td:last-child{border-right:0}
tbody td.pad{padding:.42rem .55rem}
tbody td.num{text-align:right;font-family:var(--mono);font-variant-numeric:tabular-nums;padding:.42rem .55rem}
tbody td.owing{color:#C62828;font-weight:600}
tbody td.settled{color:var(--accepted)}
tfoot td{
  position:sticky;bottom:0;z-index:2;background:var(--navy);color:#fff;
  padding:.55rem;font-family:var(--mono);font-size:.78rem;font-variant-numeric:tabular-nums;
  border-top:2px solid var(--flame);
}
tfoot td.num{text-align:right}
tfoot td.lbl{font-size:.64rem;letter-spacing:.13em;text-transform:uppercase;color:#B9C6DC}

/* spreadsheet cells you can type straight into */
.cell{
  width:100%;border:0;background:transparent;font:inherit;color:inherit;
  padding:.42rem .55rem;font-family:inherit;
}
.cell:focus{outline:2px solid var(--beam);outline-offset:-2px;background:#fff;border-radius:2px}
input.cell.num,select.cell.num{font-family:var(--mono);text-align:right;font-variant-numeric:tabular-nums}
select.cell{cursor:pointer;appearance:none;padding-right:1.1rem;
  background-image:linear-gradient(45deg,transparent 50%,var(--slate) 50%),linear-gradient(135deg,var(--slate) 50%,transparent 50%);
  background-position:calc(100% - 12px) 52%,calc(100% - 8px) 52%;
  background-size:4px 4px,4px 4px;background-repeat:no-repeat}
.statuscell{display:flex;align-items:center;gap:.45rem;padding-left:.55rem}
.statuscell select{padding-left:.15rem;min-width:104px}

.rowdel{
  appearance:none;border:0;background:none;cursor:pointer;color:var(--slate-2);
  padding:.35rem .5rem;border-radius:6px;line-height:1;font-size:1rem;
}
.rowdel:hover{background:#FFECEC;color:#C62828}

.tag{
  display:inline-block;font-family:var(--mono);font-size:.66rem;letter-spacing:.06em;
  padding:.1rem .4rem;border-radius:5px;background:#EAF1F8;color:var(--slate);white-space:nowrap;
}
.code{font-family:var(--mono);font-size:.78rem;letter-spacing:.08em;color:var(--beam-deep);font-weight:500}

/* =============================================================== forms */
.bar{display:flex;gap:.5rem;flex-wrap:wrap;align-items:center;margin-bottom:.8rem}
.fld{display:flex;flex-direction:column;gap:.22rem}
.fld label,.lbl{font-family:var(--mono);font-size:.63rem;letter-spacing:.13em;text-transform:uppercase;color:var(--slate)}
input,select,textarea{
  font-family:var(--body);font-size:.9rem;color:var(--ink);background:var(--white);
  border:1px solid var(--line);border-radius:8px;padding:.44rem .6rem;
}
input:focus,select:focus,textarea:focus{outline:2px solid var(--beam);outline-offset:-1px;border-color:var(--beam)}
textarea{resize:vertical;min-height:76px;line-height:1.55}
.search{min-width:200px}

.btn{
  appearance:none;cursor:pointer;border:1px solid transparent;border-radius:9px;
  font-family:var(--display);font-weight:600;font-size:.88rem;letter-spacing:-.01em;
  padding:.5rem .9rem;display:inline-flex;align-items:center;gap:.42rem;text-decoration:none;
  background:var(--ink);color:#fff;transition:transform .16s var(--ease),background .16s var(--ease);
}
.btn:hover{transform:translateY(-1px)}
.btn:active{transform:none}
.btn--flame{background:var(--flame);color:#2A1200}
.btn--beam{background:var(--beam);color:#04252B}
.btn--ghost{background:transparent;color:var(--ink);border-color:var(--line);}
.btn--ghost:hover{border-color:var(--slate)}
.btn--sm{padding:.32rem .6rem;font-size:.8rem;border-radius:7px}
.btn--green{background:var(--accepted);color:#04240F}
.btn--quiet{background:#EAF1F8;color:var(--slate);}
.btn:disabled{opacity:.45;cursor:not-allowed;transform:none}

/* ================================================================= box */
.box{background:var(--white);border:1px solid var(--line);border-radius:var(--r);padding:1rem}
.box + .box{margin-top:.8rem}
.grid2{display:grid;grid-template-columns:repeat(auto-fit,minmax(320px,1fr));gap:.8rem;align-items:start}

.note{
  border-left:3px solid var(--flame);background:#FFF6EF;border-radius:0 8px 8px 0;
  padding:.7rem .9rem;font-size:.86rem;color:#5A3413;
}
.note b{color:#3A2008}
.note--beam{border-left-color:var(--beam);background:#EDFBFD;color:#0A4954}
.note--beam b{color:#04333B}

/* ============================================================ messages */
.threads{display:grid;grid-template-columns:minmax(190px,240px) 1fr;gap:.8rem;align-items:start}
.thread-list{background:var(--white);border:1px solid var(--line);border-radius:var(--r);overflow:hidden}
.thread-list button{
  appearance:none;width:100%;text-align:left;background:none;border:0;cursor:pointer;
  padding:.6rem .75rem;border-bottom:1px solid var(--line);font:inherit;
  display:flex;align-items:center;gap:.5rem;
}
.thread-list button:last-child{border-bottom:0}
.thread-list button:hover{background:#F0F7FC}
.thread-list button[aria-current="true"]{background:#EDFBFD;box-shadow:inset 3px 0 0 var(--beam)}
.thread-list .nm{flex:1 1 auto;font-weight:600;font-size:.88rem}
.thread-list .cnt{font-family:var(--mono);font-size:.65rem;background:var(--flame);color:#2A1200;
  border-radius:99px;padding:.05rem .38rem;font-weight:700}

.chat{background:var(--white);border:1px solid var(--line);border-radius:var(--r);
  display:flex;flex-direction:column;min-height:340px}
.chat__log{flex:1 1 auto;padding:.9rem;display:flex;flex-direction:column;gap:.55rem;
  overflow:auto;max-height:52vh}
.bub{max-width:74%;padding:.55rem .75rem;border-radius:12px;font-size:.9rem;line-height:1.5}
.bub time{display:block;font-family:var(--mono);font-size:.62rem;letter-spacing:.06em;opacity:.62;margin-top:.28rem}
.bub--them{align-self:flex-start;background:#EEF3F9;border-bottom-left-radius:4px}
.bub--me{align-self:flex-end;background:var(--navy);color:#fff;border-bottom-right-radius:4px}
.chat__new{border-top:1px solid var(--line);padding:.7rem;display:flex;gap:.5rem;align-items:flex-end}
.chat__new textarea{flex:1 1 auto;min-height:44px;max-height:150px}

/* =============================================================== empty */
.empty{text-align:center;padding:2.6rem 1rem;color:var(--slate)}
.empty h3{color:var(--ink);margin-bottom:.4rem}

/* ================================================================ gate */
.gate{min-height:100dvh;display:grid;place-items:center;padding:var(--pad);background:var(--void)}
.gate__card{
  width:100%;max-width:430px;background:var(--white);border-radius:18px;padding:clamp(1.4rem,4vw,2.2rem);
  box-shadow:0 30px 70px -30px rgba(0,0,0,.55);
}
.gate__card .eyebrow{color:var(--beam-deep)}
.gate__card p{color:var(--slate);font-size:.92rem}
.gate__card input{width:100%;font-family:var(--mono);font-size:1.1rem;letter-spacing:.12em;
  text-align:center;padding:.7rem;text-transform:uppercase}
.gate__err{color:#C62828;font-size:.85rem;min-height:1.2rem;margin:.45rem 0 0}
/* the login card takes on the colour of whichever role is signing in */
.gate__card input:not([type]),
.gate__card input[type="text"],
.gate__card input[type="password"]{text-transform:none;letter-spacing:.02em;font-size:1rem}
.gate--admin .gate__accent{color:#FFC53D}
.gate--tutor .gate__accent{color:var(--beam)}
.gate--student .gate__accent{color:var(--accepted)}
.gate__role{display:inline-flex;align-items:center;gap:.5rem;font-family:var(--mono);
  font-size:.66rem;letter-spacing:.18em;text-transform:uppercase;padding:.28rem .6rem;border-radius:99px;margin-bottom:.9rem}
.gate--admin .gate__role{background:rgba(255,197,61,.16);color:#8a6100}
.gate--tutor .gate__role{background:rgba(0,207,232,.14);color:var(--beam-deep)}
.gate--student .gate__role{background:rgba(47,191,113,.15);color:#1c7a48}
.gate__switch{margin-top:1rem;font-size:.82rem;color:var(--slate);display:flex;gap:.8rem;flex-wrap:wrap}
.gate__switch a{color:var(--slate);text-decoration:underline;text-underline-offset:2px}

/* ------------------------------------------------ status badges */
.badge{display:inline-flex;align-items:center;gap:.35rem;font-family:var(--mono);
  font-size:.64rem;letter-spacing:.08em;text-transform:uppercase;padding:.12rem .45rem;border-radius:6px;white-space:nowrap}
.badge--active{background:rgba(47,191,113,.14);color:#1c7a48}
.badge--suspended{background:rgba(255,77,77,.14);color:#b3261e}
.badge--applicant{background:rgba(255,197,61,.18);color:#8a6100}
.badge i{width:7px;height:7px;border-radius:50%;background:currentColor;flex:none}

/* the credentials slip shown after accepting a student */
.slip{background:var(--void);color:#fff;border-radius:12px;padding:1rem 1.1rem;margin:.6rem 0}
.slip h4{font-family:var(--display);margin:0 0 .5rem;font-size:1rem}
.slip .row{display:flex;justify-content:space-between;gap:1rem;padding:.28rem 0;font-family:var(--mono);font-size:.9rem;border-bottom:1px solid var(--line-dark)}
.slip .row:last-of-type{border-bottom:0}
.slip .row b{color:var(--beam);font-weight:600}
.slip .acts{display:flex;gap:.5rem;flex-wrap:wrap;margin-top:.8rem}

/* toolbar of coloured portal buttons for the website header */
.portal{display:flex;gap:.5rem;flex-wrap:wrap}
.portal a{font-family:var(--display);font-weight:600;font-size:.85rem;text-decoration:none;
  padding:.42rem .8rem;border-radius:9px;display:inline-flex;align-items:center;gap:.4rem;
  border:1px solid transparent;transition:transform .15s var(--ease)}
.portal a:hover{transform:translateY(-1px)}
.portal .p-admin{background:linear-gradient(135deg,#FFC53D,#FF8A3C);color:#3A2008}
.portal .p-tutor{background:linear-gradient(135deg,#00CFE8,#0091A8);color:#04252B}
.portal .p-student{background:linear-gradient(135deg,#2FBF71,#1c7a48);color:#04240F}

/* ==================================================== photos & name tags */
/* A face and a name under it. Used for students, and for tutors where the
   highest qualification sits under the name.                             */
.person{display:flex;flex-direction:column;align-items:center;text-align:center;
  background:#fff;border:1px solid var(--line);border-radius:16px;padding:1rem .8rem;
  transition:transform .18s var(--ease),box-shadow .18s var(--ease)}
.person:hover{transform:translateY(-2px);box-shadow:0 12px 28px rgba(15,26,46,.10)}
.person__pic{width:104px;height:104px;border-radius:50%;object-fit:cover;display:block;
  background:var(--paper);border:3px solid var(--beam);box-shadow:0 6px 18px rgba(0,207,232,.22)}
.person--tutor .person__pic{border-color:var(--flame);box-shadow:0 6px 18px rgba(255,138,60,.24)}
.person__pic--empty{display:grid;place-items:center;font-family:var(--display);font-weight:700;
  font-size:2rem;color:var(--slate);letter-spacing:-.02em}
.person__tag{margin-top:.7rem;width:100%}
.person__name{font-family:var(--display);font-weight:700;font-size:1rem;color:var(--ink);
  line-height:1.25;letter-spacing:-.01em}
.person__sub{font-family:var(--mono);font-size:.66rem;letter-spacing:.1em;text-transform:uppercase;
  color:var(--slate);margin-top:.22rem}
.person__degree{font-size:.8rem;color:var(--beam-deep);margin-top:.3rem;line-height:1.35;font-weight:600}
.person__acts{display:flex;gap:.4rem;justify-content:center;flex-wrap:wrap;margin-top:.6rem}
.people{display:grid;grid-template-columns:repeat(auto-fill,minmax(170px,1fr));gap:.9rem}

/* the small round face used inside tables and chat rows */
.face{width:34px;height:34px;border-radius:50%;object-fit:cover;flex:none;
  background:var(--paper);border:2px solid var(--line)}
.face--sm{width:26px;height:26px;border-width:1px}
.face--empty{display:grid;place-items:center;font-family:var(--display);font-weight:700;
  font-size:.78rem;color:var(--slate)}
.namecell{display:flex;align-items:center;gap:.55rem}

/* the file picker, dressed as a button */
.pickpic{position:relative;overflow:hidden;display:inline-flex}
.pickpic input[type=file]{position:absolute;inset:0;opacity:0;cursor:pointer;font-size:0}

/* ======================================================== notifications */
.bell{position:relative;display:inline-flex}
.bell__count{position:absolute;top:-6px;right:-6px;min-width:18px;height:18px;padding:0 5px;
  border-radius:99px;background:var(--flame);color:#fff;font-family:var(--mono);font-size:.62rem;
  font-weight:700;display:grid;place-items:center;box-shadow:0 0 0 2px var(--void)}
.notes{display:flex;flex-direction:column;gap:.5rem}
.note-row{display:flex;gap:.75rem;align-items:flex-start;background:#fff;border:1px solid var(--line);
  border-left:3px solid var(--line);border-radius:12px;padding:.7rem .85rem;transition:background .15s}
.note-row.is-new{border-left-color:var(--beam);background:rgba(0,207,232,.05)}
.note-row.is-urgent{border-left-color:var(--flame);background:rgba(255,138,60,.06)}
.note-row__ico{width:30px;height:30px;border-radius:9px;flex:none;display:grid;place-items:center;
  font-size:.9rem;background:var(--paper)}
.note-row__body{flex:1;min-width:0}
.note-row__t{font-weight:600;font-size:.92rem;color:var(--ink);line-height:1.35}
.note-row__d{font-size:.83rem;color:var(--slate);margin-top:.15rem;word-break:break-word}
.note-row__when{font-family:var(--mono);font-size:.7rem;color:var(--slate);white-space:nowrap}

/* =========================================================== complaints */
/* Deliberately warmer than the lesson chat, so it reads as "a quiet word
   with the person who runs this", not another lesson message.           */
.helpbox{background:linear-gradient(180deg,rgba(255,138,60,.08),rgba(255,255,255,0));
  border:1px solid var(--line);border-radius:16px;padding:1rem}
.help__log{display:flex;flex-direction:column;gap:.55rem;max-height:340px;overflow:auto;padding:.2rem}
.help__msg{max-width:84%;padding:.6rem .8rem;border-radius:14px;font-size:.9rem;line-height:1.45}
.help__msg small{display:block;font-family:var(--mono);font-size:.64rem;opacity:.62;margin-top:.3rem}
.help__msg--mine{align-self:flex-end;background:var(--ink);color:#fff;border-bottom-right-radius:5px}
.help__msg--them{align-self:flex-start;background:#fff;border:1px solid var(--line);border-bottom-left-radius:5px}
.help__new{display:flex;gap:.5rem;margin-top:.7rem}
.help__new textarea{flex:1;min-height:64px;resize:vertical;font-family:var(--body);font-size:.92rem;
  padding:.6rem .7rem;border:1px solid var(--line);border-radius:11px;background:#fff}
.help__new textarea:focus{outline:none;border-color:var(--beam);box-shadow:0 0 0 3px rgba(0,207,232,.16)}

/* ============================================================ printing */
@media print{
  .top,.tabs,.bar,.btn,.chat__new,.note{display:none !important}
  .sheet{max-height:none;border:0}
  body{background:#fff}
  body::before{display:none}
}

@media (max-width:760px){
  .threads{grid-template-columns:1fr}
  .head{align-items:flex-start}
  .sheet{max-height:none}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important}
}