/* ============================================================
   Shared UI for the admin panel and the student portal.
   Direction: "Clear & calm" — DM Sans, deep green, restrained.
   Friendly through clarity, not decoration: big readable text,
   strong contrast, plain sentence-case labels.
   ============================================================ */
@import url('https://fonts.googleapis.com/css2?family=DM+Sans:opsz,wght@9..40,400;9..40,500;9..40,600;9..40,700&family=JetBrains+Mono:wght@400;500&display=swap');

:root{
  /* surfaces */
  --bg:#F1F4F3;
  --raised:#E7ECEA;
  --card:#FFFFFF;
  --card-hi:#F7F9F8;
  --soft:#F1F4F3;

  /* ink — deliberately high contrast */
  --ink:#101614;        /* 16.8:1 on white */
  --dim:#4E5B57;        /*  7.3:1 on white */
  --faint:#69756F;      /*  4.9:1 on white — still passes for small text */

  /* accent */
  --accent:#127A63;
  --accent-hi:#0E6250;
  --accent-soft:rgba(18,122,99,.10);
  --ring:rgba(18,122,99,.18);
  --on-accent:#FFFFFF;

  /* status */
  --ok:#127A63;      --ok-soft:rgba(18,122,99,.10);
  --warn:#8A5A00;    --warn-soft:rgba(138,90,0,.10);
  --danger:#B3261E;  --danger-soft:rgba(179,38,30,.09);
  --info:#1C5D8F;    --info-soft:rgba(28,93,143,.10);

  --line:rgba(16,22,20,.15);
  --line-hi:rgba(16,22,20,.30);

  --body:'DM Sans',system-ui,sans-serif;
  --mono:'JetBrains Mono',ui-monospace,monospace;

  --r:8px;
  --r-lg:10px;

  --shadow:0 1px 2px rgba(16,22,20,.05), 0 4px 14px rgba(16,22,20,.05);
  --shadow-lift:0 2px 6px rgba(16,22,20,.07), 0 12px 28px rgba(16,22,20,.09);

  color-scheme: light;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:var(--body);
  font-size:16px;              /* readable by default, not 14px */
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.02em;line-height:1.2}
p{margin:0}
input,select,textarea,button{font-family:inherit;font-size:inherit}

:focus-visible{outline:3px solid var(--accent);outline-offset:2px;border-radius:4px}

.hidden{display:none !important}
.muted{color:var(--dim);font-size:15px}
.faint{color:var(--faint);font-size:14px}
.mono{font-family:var(--mono)}
.error-text{color:var(--danger);font-size:14.5px;margin-top:10px;min-height:1em;font-weight:500}
.ok-text{color:var(--accent);font-size:14.5px;margin-top:10px;font-weight:500}

/* ============================================================
   Auth screen
   ============================================================ */
.auth-screen{
  min-height:100vh;display:flex;align-items:center;justify-content:center;padding:24px;
  background:
    radial-gradient(circle at 18% 8%, rgba(18,122,99,.07), transparent 55%),
    radial-gradient(circle at 88% 92%, rgba(18,122,99,.05), transparent 55%),
    var(--bg);
}
.auth-card{
  width:100%;max-width:440px;background:var(--card);
  border:1px solid var(--line);border-radius:var(--r-lg);
  padding:36px 34px;box-shadow:var(--shadow-lift);
}
.auth-card h1{font-size:28px;margin-bottom:6px}
.auth-card .brand-dot{
  width:10px;height:10px;border-radius:2px;background:var(--accent);
  display:inline-block;margin-right:10px;vertical-align:baseline;
}
.auth-card label{margin-top:20px}
.auth-tabs{display:flex;gap:4px;margin:22px 0 4px;border-bottom:1px solid var(--line)}
.auth-tabs button{
  flex:1;background:none;border:none;color:var(--dim);padding:12px 8px;cursor:pointer;
  font-size:15px;font-weight:600;border-bottom:2px solid transparent;margin-bottom:-1px;
}
.auth-tabs button:hover{color:var(--ink)}
.auth-tabs button.active{color:var(--accent);border-bottom-color:var(--accent)}

/* ============================================================
   Forms — sentence-case labels, generous targets
   ============================================================ */
label{
  display:block;
  font-size:15px;
  font-weight:600;
  color:var(--ink);
  letter-spacing:0;
  text-transform:none;
}
input,select,textarea{
  width:100%;margin-top:8px;
  background:var(--card);
  border:1.5px solid var(--line);
  color:var(--ink);
  padding:12px 14px;
  border-radius:var(--r);
  outline:none;
  font-size:16px;             /* 16px stops iOS zooming on focus */
  transition:border-color .18s, box-shadow .18s;
}
input::placeholder,textarea::placeholder{color:var(--faint)}
input:focus,select:focus,textarea:focus{
  border-color:var(--accent);
  box-shadow:0 0 0 4px var(--ring);
}
input:disabled,select:disabled,textarea:disabled{background:var(--raised);color:var(--faint);cursor:not-allowed}
textarea{min-height:110px;resize:vertical;line-height:1.6}
select{
  appearance:none;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%234E5B57' stroke-width='1.6' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:right 14px center;padding-right:38px;
}
.checkbox-row{
  display:flex;align-items:center;gap:11px;margin-top:18px;
  font-size:15px;font-weight:500;color:var(--ink);
}
.checkbox-row input{width:18px;height:18px;margin:0;accent-color:var(--accent)}
.field-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}

/* ============================================================
   Buttons
   ============================================================ */
button{cursor:pointer}
.btn-primary,.btn-secondary,.btn-danger,.btn-warn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 18px;
  border-radius:var(--r);
  border:1.5px solid transparent;
  font-size:14.5px;
  font-weight:600;
  letter-spacing:0;
  text-transform:none;
  white-space:nowrap;
  transition:background .18s, border-color .18s, color .18s;
}
.btn-primary{background:var(--accent);color:var(--on-accent)}
.btn-primary:hover{background:var(--accent-hi)}
.btn-primary:disabled{opacity:.55;cursor:not-allowed}
.btn-secondary{background:var(--card);border-color:var(--line-hi);color:var(--ink)}
.btn-secondary:hover{border-color:var(--accent);color:var(--accent);background:var(--accent-soft)}
.btn-danger{background:var(--card);border-color:rgba(179,38,30,.45);color:var(--danger)}
.btn-danger:hover{background:var(--danger-soft);border-color:var(--danger)}
.btn-warn{background:var(--card);border-color:rgba(138,90,0,.45);color:var(--warn)}
.btn-warn:hover{background:var(--warn-soft);border-color:var(--warn)}
.btn-small{padding:8px 13px;font-size:13.5px}
.btn-block{width:100%;margin-top:24px;padding:14px 22px;font-size:16px}

/* ============================================================
   Shell
   ============================================================ */
.topbar{
  position:sticky;top:0;z-index:50;
  display:flex;align-items:center;gap:18px;
  padding:0 24px;min-height:64px;
  background:var(--card);
  border-bottom:1px solid var(--line);
}
.brand{font-size:19px;font-weight:700;letter-spacing:-.02em;white-space:nowrap;color:var(--ink)}
.brand span{color:var(--accent)}
.tabs{display:flex;gap:2px;flex-wrap:wrap;flex:1;overflow-x:auto}
.tab-btn{
  background:none;border:none;color:var(--dim);
  padding:9px 13px;border-radius:var(--r);
  font-size:14.5px;font-weight:600;letter-spacing:0;text-transform:none;white-space:nowrap;
  transition:background .15s,color .15s;
}
.tab-btn:hover{color:var(--ink);background:var(--soft)}
.tab-btn.active{color:var(--accent);background:var(--accent-soft)}
.topbar-right{display:flex;align-items:center;gap:12px;margin-left:auto}
.content{padding:28px 24px 72px;max-width:1320px;margin:0 auto}

.panel-header{
  display:flex;justify-content:space-between;align-items:flex-end;
  gap:18px;flex-wrap:wrap;margin-bottom:22px;
}
.panel-header h2{font-size:26px}
.header-actions{display:flex;gap:9px;flex-wrap:wrap;align-items:center}
.header-actions input,.header-actions select{
  width:auto;min-width:190px;margin-top:0;padding:9px 13px;font-size:14.5px;
}

/* ============================================================
   Stat cards
   ============================================================ */
.stat-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:14px;margin-bottom:32px}
.stat-card{
  background:var(--card);border:1px solid var(--line);
  border-radius:var(--r-lg);padding:20px;
}
.stat-card .num{font-size:32px;font-weight:700;line-height:1.1;color:var(--accent);letter-spacing:-.03em}
.stat-card .label{margin-top:6px;font-size:14px;font-weight:500;color:var(--dim);text-transform:none;letter-spacing:0}

/* ============================================================
   Lists / cards
   ============================================================ */
.item-list{display:flex;flex-direction:column;gap:12px}
.item-card{
  background:var(--card);border:1px solid var(--line);
  border-radius:var(--r-lg);padding:18px 20px;
  transition:border-color .18s, box-shadow .18s;
}
.item-card:hover{border-color:var(--line-hi);box-shadow:var(--shadow)}
.item-card-row{display:flex;justify-content:space-between;align-items:flex-start;gap:16px;flex-wrap:wrap}
.item-card .main{min-width:0;flex:1}
.item-card .title{font-weight:700;font-size:16.5px;letter-spacing:-.01em;line-height:1.35}
.item-card .sub{color:var(--dim);font-size:14px;margin-top:5px;line-height:1.55}
.actions,.inline-actions{display:flex;gap:8px;flex-wrap:wrap;align-items:center}
.inline-actions{margin-top:15px;padding-top:14px;border-top:1px solid var(--line)}
.inline-form{display:flex;gap:8px;flex-wrap:wrap;align-items:center}
.inline-form input,.inline-form select{width:auto;margin-top:0;padding:9px 12px;font-size:14.5px}
.mini-list{display:flex;flex-direction:column;gap:8px;margin-bottom:14px}
.mini-item{
  display:flex;justify-content:space-between;align-items:center;gap:12px;
  background:var(--soft);border:1px solid var(--line);
  border-radius:var(--r);padding:10px 14px;font-size:14.5px;
}

/* ============================================================
   Status pills — readable, not 9px caps
   ============================================================ */
.pill{
  display:inline-block;padding:3px 10px;border-radius:999px;
  font-size:13px;font-weight:600;letter-spacing:0;text-transform:none;
  border:1px solid var(--line-hi);color:var(--dim);background:var(--card);
  margin-left:7px;vertical-align:1px;
}
.status-approved,.status-active,.status-paid,.published,.status-completed{
  color:var(--ok);border-color:rgba(18,122,99,.42);background:var(--ok-soft)}
.status-pending,.status-partial,.status-new,.draft{
  color:var(--warn);border-color:rgba(138,90,0,.42);background:var(--warn-soft)}
.status-rejected,.status-unpaid,.status-suspended,.status-cancelled{
  color:var(--danger);border-color:rgba(179,38,30,.42);background:var(--danger-soft)}
.status-in-progress{
  color:var(--info);border-color:rgba(28,93,143,.42);background:var(--info-soft)}
.status-closed,.status-refunded{color:var(--faint)}

/* ============================================================
   Table
   ============================================================ */
.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--r-lg);background:var(--card)}
table{width:100%;border-collapse:collapse;font-size:14.5px}
th{
  text-align:left;font-size:13.5px;font-weight:700;letter-spacing:0;text-transform:none;
  color:var(--ink);background:var(--soft);
  padding:13px 16px;border-bottom:1px solid var(--line);white-space:nowrap;
}
td{padding:13px 16px;border-bottom:1px solid var(--line);vertical-align:top;color:var(--ink)}
tbody tr:hover td{background:var(--card-hi)}
tr:last-child td{border-bottom:none}
td.num{text-align:right;font-variant-numeric:tabular-nums}

/* ============================================================
   Modal
   ============================================================ */
.modal-backdrop{
  position:fixed;inset:0;background:rgba(16,22,20,.42);
  display:flex;align-items:center;justify-content:center;
  padding:22px;z-index:200;overflow-y:auto;
}
.modal{
  background:var(--card);border:1px solid var(--line);
  border-radius:var(--r-lg);padding:28px;
  width:100%;max-width:540px;max-height:90vh;overflow-y:auto;
  box-shadow:0 24px 60px rgba(16,22,20,.22);
}
.modal.wide{max-width:880px}
.modal h3{font-size:21px;margin-bottom:6px}
.modal-actions{display:flex;justify-content:flex-end;gap:10px;margin-top:26px}
.split{display:grid;grid-template-columns:1fr 1fr;gap:28px}

/* ============================================================
   Toast
   ============================================================ */
#toast{
  position:fixed;bottom:26px;left:50%;
  transform:translateX(-50%) translateY(140%);
  background:var(--ink);color:#F1F4F3;
  border-radius:var(--r);padding:14px 20px;
  font-size:15px;font-weight:500;z-index:400;max-width:90vw;
  box-shadow:0 12px 32px rgba(16,22,20,.28);
  transition:transform .28s cubic-bezier(.2,.8,.2,1);
}
#toast.show{transform:translateX(-50%) translateY(0)}
#toast.err{background:var(--danger)}
#toast.ok{background:var(--accent)}

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width:820px){
  .field-row,.split{grid-template-columns:1fr}
  .topbar{min-height:0;padding:12px 16px;flex-wrap:wrap;gap:12px}
  .tabs{order:3;width:100%}
  .topbar-right{margin-left:auto}
  .content{padding:20px 16px 60px}
  .header-actions input,.header-actions select{min-width:0;flex:1}
  .panel-header h2{font-size:23px}
}

/* Inline helpers used by the panel and portal scripts. */
.link{color:var(--accent);font-weight:600;text-decoration:underline;text-underline-offset:2px}
.link:hover{color:var(--accent-hi)}
.amount-due{color:var(--warn);font-weight:700}

/* ============================================================
   Offers — status strip, notice bar, and the composer modal
   ============================================================ */
.stat-strip{
  display:flex;flex-wrap:wrap;gap:10px;margin-bottom:18px;
}
.stat-strip .chip{
  display:flex;align-items:baseline;gap:7px;padding:8px 14px;
  background:var(--card);border:1px solid var(--line);border-radius:999px;font-size:14.5px;
}
.stat-strip .chip b{font-size:17px;font-weight:700;letter-spacing:-.01em}
.stat-strip .chip span{color:var(--dim)}
.stat-strip .chip.is-accent b{color:var(--accent)}
.stat-strip .chip.is-warn  b{color:var(--warn)}

.notice{
  padding:14px 16px;border-radius:var(--r);margin-bottom:18px;font-size:15px;
  background:var(--warn-soft);border:1px solid rgba(138,90,0,.32);color:var(--warn);
}
.notice b{font-weight:700}
.notice code{font-family:var(--mono);font-size:13.5px}

/* status pills the offer module adds on top of the shared set */
.status-sent{color:var(--info);border-color:rgba(28,93,143,.42);background:var(--info-soft)}
.status-accepted{color:var(--ok);border-color:rgba(18,122,99,.42);background:var(--ok-soft)}
.status-declined{color:var(--danger);border-color:rgba(179,38,30,.42);background:var(--danger-soft)}
.status-draft{color:var(--warn);border-color:rgba(138,90,0,.42);background:var(--warn-soft)}
.status-expired,.status-withdrawn{color:var(--faint)}

.offer-lines{
  margin-top:12px;padding-top:12px;border-top:1px solid var(--line);
  display:flex;flex-direction:column;gap:5px;font-size:14.5px;color:var(--dim);
}
.offer-lines .line{display:flex;justify-content:space-between;gap:14px}
.offer-lines .line b{color:var(--ink);font-weight:600}
.offer-lines .grand{color:var(--ink);font-weight:700;font-size:16px;padding-top:6px}

/* ---- composer ---- */
.chosen{
  margin-top:10px;padding:12px 15px;background:var(--accent-soft);
  border:1px solid rgba(18,122,99,.32);border-radius:var(--r);
  display:flex;justify-content:space-between;align-items:center;gap:14px;
}
.chosen .who{font-weight:600}
.chosen .who small{display:block;font-weight:400;color:var(--dim);font-size:13.5px}

.picker{
  margin-top:10px;max-height:270px;overflow-y:auto;
  border:1px solid var(--line);border-radius:var(--r);background:var(--card);
}
.picker .row{
  display:flex;align-items:flex-start;gap:12px;padding:12px 15px;
  border-bottom:1px solid var(--line);cursor:pointer;
}
.picker .row:last-child{border-bottom:none}
.picker .row:hover{background:var(--card-hi)}
.picker .row.on{background:var(--accent-soft)}
.picker input[type="checkbox"]{margin-top:5px;width:18px;height:18px;accent-color:var(--accent);flex:none}
.picker .info{flex:1;min-width:0}
.picker .info .t{font-weight:600;font-size:15.5px;line-height:1.35}
.picker .info .m{color:var(--faint);font-size:13.5px;margin-top:2px}
.picker .price{
  width:130px;flex:none;text-align:right;white-space:nowrap;
  font-size:15px;font-weight:600;color:var(--ink);padding-top:1px;
}
.picker .price.no-fee{font-size:13.5px;font-weight:600;color:var(--warn)}
.picker .batch{
  width:100%;margin-top:8px;padding:7px 10px;font-size:14px;
  border:1.5px solid var(--line-hi);border-radius:6px;background:var(--card);color:var(--ink);
}
.picker .empty{padding:22px 15px;text-align:center;color:var(--dim)}

.offer-summary{
  margin-top:20px;padding:16px 18px;background:var(--soft);
  border:1px solid var(--line);border-radius:var(--r);
}
.offer-summary .line{display:flex;justify-content:space-between;gap:14px;font-size:15px;color:var(--dim);padding:3px 0}
.offer-summary .line.grand{
  color:var(--ink);font-weight:700;font-size:18px;
  border-top:1px solid var(--line-hi);margin-top:8px;padding-top:11px;
}
@media (max-width:640px){
  .picker .row{flex-wrap:wrap}
  .picker .price{width:100%;text-align:left;margin-top:4px}
}

/* The composer is a fixed shell: title, scrolling body, pinned footer, so the
   running total stays on screen while the discount is being typed. */
#offer-modal .modal{display:flex;flex-direction:column;overflow:hidden}
#offer-form{flex:1 1 auto;min-height:0;overflow-y:auto;padding-right:4px}
.offer-foot{flex:none;padding-top:4px}
.offer-foot .modal-actions{margin-top:16px}
.offer-foot .error-text{margin-bottom:0}

/* A course with no fee set would go out as "0.00" on a real offer letter. */
.offer-summary .line.zero-fee{
  color:var(--warn);font-size:14px;line-height:1.5;
  margin-top:10px;padding-top:10px;border-top:1px solid var(--line);
}

/* ============================================================
   Focus: one ring, not two
   ============================================================
   Form controls already show focus as an accent border plus a soft 4px halo.
   The global :focus-visible outline then drew a second, harder ring 2px
   outside that — two concentric rings on every focused field. Buttons, links
   and tabs keep the outline; it is their only focus affordance. */
input:focus-visible,
select:focus-visible,
textarea:focus-visible{outline:none}

/* ---- offer composer density ----
   The composer is the tallest dialog in the panel. These trim the parts that
   were paying for space they did not use. */
#offer-message{min-height:76px}
.picker .empty{padding:16px 15px;font-size:15px}
/* With nothing chosen the summary was a heavy grey slab above the buttons.
   Let it be a quiet line until there is something to total up. */
.offer-summary:has(.line:only-child:not(.grand)){
  background:none;border:none;padding:4px 2px 0;
}
.offer-summary .line:only-child:not(.grand){color:var(--faint);font-size:14.5px}

/* ---- composer: one scroll region, not two ----
   Every row rendered its batch dropdown, selected or not, costing ~40px each
   and pushing the list into its own scrollbar nested inside the form's. A
   batch only means something once the course is actually being offered. */
.picker .batch{display:none}
.picker .row.on .batch{display:block}
/* No inner scroll. The form is the one scrolling region in this dialog —
   a list that scrolls inside a form that also scrolls leaves you never sure
   which one the wheel is going to move. */
.picker{max-height:none}

/* Two columns once there is room: the course list on the left, the terms on
   the right. Stacked, this dialog ran past the bottom of a laptop screen and
   the discount and date scrolled out of sight behind the totals. */
#offer-form{display:grid;grid-template-columns:1fr;gap:0 26px;align-items:start}
@media (min-width:780px){
  #offer-form{grid-template-columns:minmax(0,1fr) 330px}
}
/* Wider than the other dialogs — it carries two columns, and squeezing the
   left one wraps every course title onto two lines. */
#offer-modal .modal{max-width:980px}
.offer-col{min-width:0}

/* When the form does scroll, fade the cut edge so a half-visible field reads
   as "more below" rather than as a clipped layout. Pure CSS: the `local`
   layers sit on the content, the `scroll` layers stay put and are revealed
   only when there is something above or below. */
#offer-form{
  background:
    linear-gradient(var(--card) 30%, rgba(255,255,255,0)) top / 100% 22px no-repeat local,
    linear-gradient(rgba(255,255,255,0), var(--card) 70%) bottom / 100% 22px no-repeat local,
    radial-gradient(farthest-side at 50% 0, rgba(16,22,20,.13), rgba(16,22,20,0)) top / 100% 9px no-repeat scroll,
    radial-gradient(farthest-side at 50% 100%, rgba(16,22,20,.13), rgba(16,22,20,0)) bottom / 100% 9px no-repeat scroll;
}

/* Narrow screens: a long email in the student chip, and three footer buttons,
   both pushed past the modal edge instead of wrapping. */
.chosen{flex-wrap:wrap}
.chosen .who{overflow-wrap:anywhere}
.modal-actions{flex-wrap:wrap}
@media (max-width:520px){
  .modal-actions{gap:8px}
  .modal-actions button{flex:1 1 auto}
}

/* Discount: a flat amount, or a percentage of the subtotal. */
.discount-head{display:flex;align-items:center;justify-content:space-between;gap:12px}
.seg{display:inline-flex;border:1.5px solid var(--line-hi);border-radius:var(--r);overflow:hidden}
.seg button{
  background:var(--card);border:none;color:var(--dim);
  padding:5px 12px;font-size:13.5px;font-weight:600;line-height:1.5;
}
.seg button + button{border-left:1.5px solid var(--line-hi)}
.seg button:hover{color:var(--ink);background:var(--card-hi)}
.seg button.on{background:var(--accent);color:var(--on-accent)}

/* ---- fee editor: every course's price on one screen ---- */
#fee-editor{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:18px 20px;margin-bottom:22px;box-shadow:var(--shadow);
}
.fee-rows{
  display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));
  gap:10px 24px;margin-bottom:16px;
}
.fee-row{
  display:flex;align-items:center;justify-content:space-between;gap:14px;
  padding:8px 0;border-bottom:1px solid var(--line);margin:0;
}
.fee-name{font-weight:600;font-size:15px;min-width:0;line-height:1.35}
.fee-name small{display:block;font-weight:400;font-size:13px;color:var(--faint)}
.fee-row input{width:140px;flex:none;margin-top:0;padding:8px 11px;font-size:15px;text-align:right}
.fee-actions{display:flex;align-items:center;gap:10px;flex-wrap:wrap}