/* Shared styles for login / profile / admin pages. Palette mirrors the portal. */
:root{
  --ink:#1C1A17;--ink-2:#2A2622;--muted:#6B655C;--muted-2:#A39B8E;
  --paper:#F4F1EA;--card:#FFFFFF;--line:#E4DED3;--line-2:#EFEAE1;
  --teal:#1F5E63;--teal-d:#174A4E;--teal-l:#E3EEEC;--mint:#7FC2BA;
  --amber:#8A5210;--amber-l:#F6EBDC;--green:#2F6B3A;--green-l:#E5F0E3;--red:#9B2C2C;--red-l:#F7E4E1;
  --dark:#1C1A17;--dark-2:#26221E;--dark-3:#39342D;
  --serif:'Source Serif 4',Georgia,serif;--sans:'IBM Plex Sans',system-ui,sans-serif;--mono:'IBM Plex Mono',ui-monospace,monospace;
}
*{box-sizing:border-box}
html,body{margin:0}
body{background:var(--paper);color:var(--ink);font-family:var(--sans);-webkit-font-smoothing:antialiased;font-size:15px;line-height:1.5}
a{color:var(--teal)}a:hover{color:var(--teal-d)}
button,input,select{font:inherit}
.eyebrow{font:500 11.5px/1.2 var(--mono);letter-spacing:.08em;text-transform:uppercase;color:var(--teal)}
.serif{font-family:var(--serif)}
.muted{color:var(--muted)}
.mono{font-family:var(--mono)}
h1,h2,h3{margin:0;font-family:var(--serif);font-weight:600;line-height:1.15}
h1{font-size:clamp(28px,3.4vw,40px)}h2{font-size:22px}h3{font-size:18px}

/* buttons & inputs */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:44px;padding:0 18px;border-radius:10px;border:1px solid transparent;font-size:14.5px;font-weight:600;cursor:pointer;text-decoration:none;white-space:nowrap}
.btn-primary{background:var(--teal);color:#fff}.btn-primary:hover{background:var(--teal-d);color:#fff}
.btn-ghost{background:transparent;border-color:#CFC7B9;color:var(--ink)}.btn-ghost:hover{background:#fff;color:var(--ink)}
.btn-danger{background:#fff;border-color:var(--red);color:var(--red)}.btn-danger:hover{background:var(--red-l)}
.btn-sm{height:34px;padding:0 12px;font-size:13px;border-radius:8px}
.btn[disabled]{background:#D9D4CB;color:#8A847A;border-color:transparent;cursor:not-allowed}
.field{display:flex;flex-direction:column;gap:6px}
.field label{font:500 11px/1 var(--mono);letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}
.input{height:46px;padding:0 14px;border-radius:10px;border:1px solid #CFC7B9;background:#fff;color:var(--ink);font-size:15px;outline:none;width:100%}
.input:focus{border-color:var(--teal);box-shadow:0 0 0 3px rgba(31,94,99,.12)}
.notice{display:flex;gap:10px;align-items:flex-start;padding:12px 14px;border-radius:10px;font-size:14px;line-height:1.5}
.notice-err{background:var(--red-l);color:#6E1F1F;border:1px solid #EBC7C1}
.notice-ok{background:var(--green-l);color:#1E4A26;border:1px solid #BFD9BA}
.notice-info{background:var(--teal-l);color:#173B3E;border:1px solid #C9DEDB}

/* top bar */
.topbar{position:sticky;top:0;z-index:20;display:flex;align-items:center;gap:16px;padding:12px clamp(16px,4vw,40px);background:var(--dark);color:#fff}
.topbar .brand{display:flex;flex-direction:column;gap:3px;text-decoration:none;color:#fff}
.topbar .brand small{font:500 10.5px/1 var(--mono);letter-spacing:.08em;color:var(--muted-2);text-transform:uppercase}
.topbar .brand span{font:600 18px/1 var(--serif)}
.topbar nav{margin-left:auto;display:flex;flex-wrap:wrap;gap:6px;align-items:center}
.topbar nav a,.topbar nav button{height:36px;padding:0 14px;border-radius:8px;border:1px solid var(--dark-3);background:var(--dark-2);color:#EDE8DF;font-size:13.5px;text-decoration:none;display:inline-flex;align-items:center;cursor:pointer}
.topbar nav a:hover,.topbar nav button:hover{background:#2E2A25;color:#fff}
.topbar nav a.on{background:#fff;color:var(--ink);border-color:#fff}

.wrap{max-width:1200px;margin:0 auto;padding:clamp(24px,4vw,44px) clamp(16px,4vw,40px) 72px;display:flex;flex-direction:column;gap:28px}
.card{background:var(--card);border:1px solid var(--line);border-radius:14px}
.grid{display:grid;gap:12px}
.kpis{grid-template-columns:repeat(auto-fit,minmax(170px,1fr))}
.kpi{padding:18px 20px;display:flex;flex-direction:column;gap:6px}
.kpi b{font:600 32px/1 var(--serif)}
.kpi span{font-size:13px;color:var(--muted)}
.kpi i{font-style:normal;font:500 11.5px/1 var(--mono);color:var(--teal)}
.bar{height:6px;border-radius:3px;background:var(--line-2);overflow:hidden}.bar>div{height:100%;background:var(--teal);border-radius:3px}
.badge{display:inline-flex;align-items:center;height:22px;padding:0 8px;border-radius:6px;font:500 11.5px/1 var(--mono);white-space:nowrap}
.b-ok{background:var(--green-l);color:var(--green)}.b-bad{background:var(--red-l);color:var(--red)}.b-none{background:var(--line-2);color:var(--muted)}
.b-admin{background:#E8F1FF;color:#1B3A7A}.b-student{background:var(--teal-l);color:var(--teal)}.b-blocked{background:var(--red-l);color:var(--red)}
.dot{width:8px;height:8px;border-radius:50%;display:inline-block}

/* tables */
.tbl-wrap{overflow-x:auto}
table.tbl{width:100%;border-collapse:collapse;font-size:14px}
.tbl th{text-align:left;padding:11px 14px;font:500 11px/1.2 var(--mono);letter-spacing:.06em;text-transform:uppercase;color:var(--muted);border-bottom:1px solid var(--line);white-space:nowrap;background:#FAF8F4;cursor:default}
.tbl th[data-sort]{cursor:pointer}.tbl th[data-sort]:hover{color:var(--ink)}
.tbl td{padding:12px 14px;border-bottom:1px solid var(--line-2);vertical-align:middle}
.tbl tr.click{cursor:pointer}.tbl tr.click:hover td{background:#FAF8F4}
.who{display:flex;align-items:center;gap:12px;min-width:220px}
.avatar{width:36px;height:36px;flex:none;border-radius:50%;display:flex;align-items:center;justify-content:center;background:var(--teal);color:#fff;font:600 13px/1 var(--sans)}
.who b{display:block;font-weight:600}.who small{color:var(--muted);font-size:12.5px}

/* drawer */
.scrim{position:fixed;inset:0;background:rgba(28,26,23,.45);z-index:40}
.drawer{position:fixed;top:0;right:0;bottom:0;width:min(720px,100vw);background:var(--paper);z-index:41;overflow-y:auto;box-shadow:-20px 0 50px rgba(0,0,0,.2)}
.drawer header{position:sticky;top:0;display:flex;align-items:center;gap:14px;padding:18px 22px;background:var(--dark);color:#fff;z-index:1}
.drawer .body{padding:22px;display:flex;flex-direction:column;gap:20px}
.section-title{font:500 11px/1 var(--mono);letter-spacing:.1em;text-transform:uppercase;color:var(--muted);margin-bottom:10px}

/* auth page */
.auth{min-height:100vh;display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr)}
.auth-side{background:var(--dark);color:#EDE8DF;padding:clamp(28px,5vw,64px);display:flex;flex-direction:column;gap:22px;justify-content:space-between}
.auth-main{display:flex;align-items:center;justify-content:center;padding:clamp(24px,5vw,64px)}
.auth-card{width:100%;max-width:440px;display:flex;flex-direction:column;gap:18px}
.tabs{display:flex;gap:4px;padding:4px;border-radius:10px;background:#EAE5DB}
.tabs button{flex:1;height:38px;border:none;border-radius:7px;background:transparent;font-size:14px;font-weight:500;color:var(--ink);cursor:pointer}
.tabs button.on{background:#fff;font-weight:600;box-shadow:0 1px 2px rgba(0,0,0,.06)}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:12px}
@media (max-width:860px){.auth{grid-template-columns:1fr}.auth-side{min-height:auto}.auth-side .hide-sm{display:none}}
@media (max-width:520px){.row2{grid-template-columns:1fr}}
.hidden{display:none!important}
.spin{width:16px;height:16px;border:2px solid rgba(255,255,255,.5);border-top-color:#fff;border-radius:50%;animation:sp 0.8s linear infinite}
@keyframes sp{to{transform:rotate(360deg)}}

/* ---- responsive ---- */
html{-webkit-text-size-adjust:100%;text-size-adjust:100%}
img{max-width:100%;height:auto}
.tbl-wrap{-webkit-overflow-scrolling:touch;overscroll-behavior-x:contain}
.btn,.input,.tabs button{min-height:40px}
@media (hover:none){.btn-sm{min-height:40px;padding:0 14px}}
.topbar{padding-top:max(12px,env(safe-area-inset-top));padding-left:max(clamp(16px,4vw,40px),env(safe-area-inset-left));padding-right:max(clamp(16px,4vw,40px),env(safe-area-inset-right))}

/* tablet */
@media (max-width:1024px){
  .wrap{gap:22px}
  .tbl th,.tbl td{padding:10px 12px}
  .grid[style*="minmax(340px"],.grid[style*="minmax(320px"]{grid-template-columns:1fr!important}
}
/* tablet portrait + phones: nav becomes a scrollable strip */
@media (max-width:860px){
  .topbar{flex-wrap:wrap;gap:10px}
  .topbar nav{margin-left:0;width:100%;flex-wrap:nowrap;overflow-x:auto;scrollbar-width:none;-webkit-overflow-scrolling:touch;padding-bottom:2px;mask-image:linear-gradient(90deg,#000 85%,transparent)}
  .topbar nav::-webkit-scrollbar{display:none}
  .topbar nav a,.topbar nav button{flex:none}
  .drawer{width:100vw}
  .drawer header{padding-top:max(18px,env(safe-area-inset-top))}
}
/* phones */
@media (max-width:600px){
  body{font-size:14.5px}
  h1{font-size:26px}h2{font-size:20px}
  .wrap{padding:20px 14px 56px;gap:18px}
  .kpis{grid-template-columns:repeat(2,minmax(0,1fr))}
  .kpi{padding:14px}.kpi b{font-size:24px}
  .card{border-radius:12px}
  .tbl{font-size:13px}.tbl th{font-size:10.5px}
  .tbl th:first-child,.tbl td:first-child{position:sticky;left:0;z-index:1;background:#fff;box-shadow:1px 0 0 var(--line-2)}
  .tbl th:first-child{background:#FAF8F4}
  .who{min-width:180px;gap:10px}.avatar{width:32px;height:32px;font-size:12px}
  .tabs{overflow-x:auto;flex-wrap:nowrap}.tabs button{flex:none;padding:0 14px;white-space:nowrap}
  .drawer .body{padding:16px 14px}
  #modal .card,#sv-m .card{max-height:calc(100dvh - 24px)}
  #modal,#sv-m{padding:12px!important}
  .input{font-size:16px}
}
@media (max-width:380px){.kpis{grid-template-columns:1fr}}
@media print{.topbar,.btn{display:none!important}}