/* Genuine Edu-Solutions admin dashboard
   THEME: derived from the logo — Teal green + Amber + Grey + Charcoal */
:root{
  --teal:#17b897;--teal-dark:#0f9479;--teal-deep:#0b6f5c;--teal-soft:#e0f6f1;--teal-tint:#f1faf8;
  --amber:#f2a516;--amber-soft:#fff4d9;
  --ink:#2f3437;--muted:#6a7378;--grey:#b9bcbf;
  --pale:#f6fbfa;--line:#e1eeea;--bad:#c0392b;
  --shadow:0 8px 24px rgba(31,60,55,.07);--radius:16px
}
*{box-sizing:border-box}
body{margin:0;font:15px/1.5 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;color:var(--ink);background:var(--pale)}
[hidden]{display:none!important}.muted{color:var(--muted);font-size:13px}a{color:var(--teal-dark)}
label{display:block;font-weight:600;font-size:13px;margin:12px 0 0}
input,select,textarea{width:100%;margin-top:5px;padding:10px 12px;border:1px solid var(--line);border-radius:10px;font:inherit;background:#fff;color:var(--ink);transition:border-color .2s,box-shadow .2s}
input[type=file]{padding:9px}input[type=checkbox]{width:auto;margin:0 8px 0 0;accent-color:var(--teal)}
input:focus,select:focus,textarea:focus{outline:0;border-color:var(--teal);box-shadow:0 0 0 3px rgba(23,184,151,.2)}
button:focus-visible{outline:2px solid var(--teal);outline-offset:2px}

/* Buttons */
.btn{position:relative;margin-top:16px;width:100%;padding:11px 16px;border:0;border-radius:10px;background:linear-gradient(135deg,var(--teal) 0%,#2fd0ae 100%);color:#fff;font:inherit;font-weight:800;cursor:pointer;box-shadow:0 6px 16px rgba(23,184,151,.32);transition:transform .2s,filter .2s,box-shadow .2s}
.btn:hover{transform:translateY(-1px);filter:brightness(1.05);box-shadow:0 10px 22px rgba(23,184,151,.4)}
.btn:disabled{opacity:.7;cursor:wait;transform:none}
/* Loading state (added by admin-ui.js) */
.btn.loading{pointer-events:none;cursor:wait;opacity:.85;transform:none}
.btn.loading::before{content:"";display:inline-block;width:16px;height:16px;margin:-3px 10px -3px 0;vertical-align:middle;border:2.5px solid rgba(255,255,255,.4);border-top-color:#fff;border-radius:50%;animation:spin .7s linear infinite}
.btn.loading::after{content:"";position:absolute;left:0;bottom:0;height:3px;width:40%;background:var(--amber);border-radius:0 3px 3px 0;animation:slide 1.1s ease-in-out infinite}
@keyframes spin{to{transform:rotate(360deg)}}
@keyframes slide{0%{left:-40%}100%{left:100%}}
.ghost{border:1px solid var(--line);background:#fff;color:var(--ink);border-radius:8px;padding:6px 12px;font:inherit;cursor:pointer;transition:background .2s}
.ghost:hover{background:var(--teal-soft)}
.link{display:block;margin-top:12px;font-size:13px}.err{color:var(--bad);font-size:13px;min-height:18px;margin:10px 0 0}

.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:20px;box-shadow:var(--shadow)}
.card h3{margin:0 0 12px;font-size:16px;color:var(--ink)}

/* Sign-in screen: split layout with illustration */
.auth{min-height:100vh;display:grid;grid-template-columns:1.1fr 1fr;align-items:center;gap:24px;padding:24px;
  background:
    radial-gradient(520px 320px at 100% 0%,rgba(242,165,22,.16),transparent 60%),
    radial-gradient(520px 380px at 0% 100%,rgba(23,184,151,.16),transparent 65%),
    #fff}
.auth-hero{display:flex;flex-direction:column;align-items:center;text-align:center;padding:24px;max-width:520px;margin:0 auto;animation:rise .6s ease both}
.auth-logo{width:84px;height:84px;object-fit:contain;border-radius:18px;background:#fff;box-shadow:var(--shadow);margin-bottom:8px}
.auth-art{width:min(420px,100%);height:auto;aspect-ratio:4/3;animation:float 5s ease-in-out infinite}
.auth-hero h2{margin:8px 0 6px;font-size:26px;color:var(--ink)}
.auth-hero p{margin:0;color:var(--muted)}
.auth .card{width:min(400px,100%);justify-self:center;border:0;padding:28px;box-shadow:0 24px 60px rgba(31,60,55,.16);position:relative;animation:rise .5s ease both}
.auth h1{margin:0 0 4px;font-size:22px;color:var(--ink)}
.form-art{position:absolute;top:14px;right:14px;width:84px;height:62px}
@keyframes rise{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:none}}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-8px)}}

/* Stats and bars */
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(130px,1fr));gap:12px;margin-bottom:16px}
.stat{background:#fff;border:1px solid var(--line);border-top:3px solid var(--teal);border-radius:12px;padding:14px;box-shadow:var(--shadow)}
.stat:nth-child(even){border-top-color:var(--amber)}
.stat b{display:block;font-size:26px;color:var(--ink)}.stat span{color:var(--muted);font-size:13px}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:16px}
.bar{display:grid;grid-template-columns:110px 1fr 36px;gap:8px;align-items:center;margin:7px 0;font-size:13px}
.bar span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.bar i{display:block;height:10px;width:var(--w);min-width:4px;background:linear-gradient(90deg,var(--teal),var(--amber));border-radius:6px}
.bar b{text-align:right}

/* Page headers with illustrations */
.page-head{display:flex;align-items:center;gap:14px;margin-bottom:16px;padding:14px 18px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);position:relative;overflow:hidden}
.page-head::before{content:"";position:absolute;inset:0 auto 0 0;width:5px;background:linear-gradient(var(--teal),var(--amber))}
.page-head>div{flex:1;min-width:0}
.page-head h2{margin:0;font-size:21px;color:var(--ink)}.page-head p{margin:3px 0 0}
.head-art{width:110px;height:76px;flex:none}
.page-head.welcome{background:linear-gradient(120deg,var(--teal-soft),#fff 70%)}

/* Tools and tables */
.tools{display:flex;gap:10px;flex-wrap:wrap;align-items:center;margin-bottom:12px}.tools input{flex:1 1 240px;width:auto;margin:0}.tools select{width:auto;margin:0}
.wrap{overflow-x:auto;background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}
table{width:100%;border-collapse:collapse;min-width:860px}
th,td{padding:11px 12px;text-align:left;vertical-align:top;border-bottom:1px solid var(--line);font-size:14px}
th{background:var(--teal-soft);font-size:12px;color:var(--teal-deep);text-transform:uppercase;letter-spacing:.5px;position:sticky;top:0}
tbody tr:hover{background:var(--teal-tint)}
td.msg{max-width:280px;word-break:break-word}td select{margin:0;padding:6px 8px}
.act{white-space:nowrap}
.act button{padding:6px 10px;border:1px solid var(--line);border-radius:8px;background:#fff;color:var(--ink);cursor:pointer;margin-right:4px;transition:background .2s}
.act button:hover{background:var(--teal-soft)}
.act .danger{color:var(--bad);border-color:#f0c4be}.act .danger:hover{background:#fdeeec}
.meter{width:90px;height:8px;background:var(--line);border-radius:6px;overflow:hidden;display:inline-block;vertical-align:middle;margin-right:6px}
.meter i{display:block;height:100%;background:linear-gradient(90deg,var(--teal),var(--amber))}
.row{display:flex;justify-content:space-between;align-items:center;gap:10px;padding:9px 0;border-bottom:1px solid var(--line)}.row small{color:var(--muted);display:block}

/* Toast */
#toast{position:fixed;left:50%;bottom:24px;transform:translate(-50%,20px);background:var(--ink);color:#fff;padding:10px 18px;border-radius:10px;border-left:4px solid var(--amber);opacity:0;pointer-events:none;transition:.25s;z-index:9}
#toast.show{opacity:1;transform:translate(-50%,0)}

/* Sidebar shell */
.shell{display:grid;grid-template-columns:250px 1fr;min-height:100vh}
.side{position:sticky;top:0;height:100vh;display:flex;flex-direction:column;gap:18px;padding:18px 14px;background:#fff;border-right:1px solid var(--line);color:var(--ink)}
.side::after{content:"";position:absolute;inset:0 0 auto 0;height:4px;background:linear-gradient(90deg,var(--teal),var(--amber))}
.brand{display:flex;align-items:center;gap:10px;padding:8px 8px 14px;border-bottom:1px solid var(--line)}
.brand img{width:44px;height:44px;border-radius:10px;background:#fff;object-fit:contain}
.brand strong{line-height:1.25;font-size:16px;color:var(--teal-dark)}.brand span{color:var(--muted);font-weight:600;font-size:12px}
.tabs{display:flex;flex-direction:column;gap:4px}
.tabs button{display:flex;align-items:center;gap:10px;padding:11px 12px;border:0;border-radius:10px;background:none;color:var(--muted);font:inherit;font-weight:600;text-align:left;cursor:pointer;transition:background .2s,color .2s}
.tabs button i{font-style:normal;width:20px;text-align:center}
.tabs button:hover{background:var(--teal-soft);color:var(--teal-deep)}
.tabs button.on{background:var(--teal);color:#fff;box-shadow:inset 3px 0 0 var(--amber),0 6px 14px rgba(23,184,151,.25)}
.me{margin-top:auto;display:flex;flex-direction:column;gap:8px}.me .muted{word-break:break-word}
main{max-width:1500px;padding:24px 24px 60px;min-width:0}
main section:not([hidden]){animation:rise .35s ease both}

/* Courses / gallery / reviews pages */
.courses-heading .muted{white-space:nowrap}
.course-admin-grid{grid-template-columns:minmax(280px,380px) minmax(0,1fr);align-items:start}
.course-list-title{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-bottom:16px}
.course-list-card{min-width:0}.course-list-title h3{margin:0}
.course-preview{height:170px;margin-top:10px;border:1px dashed #9fd9cd;border-radius:12px;background:var(--teal-tint);display:grid;place-items:center;overflow:hidden}
.course-preview img{width:100%;height:100%;object-fit:cover}
.course-preview-placeholder,.course-no-image{font-size:12px;color:var(--muted)}
.course-remove-image{margin-top:9px;width:100%}.course-cancel{margin-top:8px;width:100%}
.course-check{display:flex;align-items:center;gap:6px;font-size:13px}.course-check input{width:auto}
.course-table{min-width:760px}
.course-thumb{width:64px;height:48px;object-fit:cover;border-radius:7px;border:1px solid var(--line)}
.course-desc{display:block;color:var(--muted);font-size:12px;max-width:260px;margin-top:3px}
.status-pill{display:inline-block;padding:3px 8px;border-radius:99px;font-size:11px;font-weight:700}
.status-pill.on{background:var(--teal-soft);color:var(--teal-deep)}.status-pill.off{background:#f1f3f6;color:#687386}

/* Gallery */
.gal-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(170px,1fr));gap:14px}
.gal-item{border:1px solid var(--line);border-radius:12px;overflow:hidden;background:#fff;display:flex;flex-direction:column}
.gal-item.off{opacity:.55}
.gal-item img{width:100%;aspect-ratio:4/3;object-fit:cover;display:block}
.gal-meta{padding:8px 10px 0;display:flex;flex-direction:column;gap:2px}
.gal-item .act{padding:8px 10px 10px;display:flex;gap:6px}

/* Responsive */
@media(max-width:1000px){.course-admin-grid{grid-template-columns:1fr}}
@media(max-width:900px){
  .auth{grid-template-columns:1fr;gap:0;align-content:start}
  .auth-hero{padding:8px 8px 0}.auth-art{width:min(260px,70%)}.auth-hero h2{font-size:20px}.auth-hero p{display:none}
  .form-art{display:none}
}
@media(max-width:820px){
  .shell{grid-template-columns:1fr}
  .side{position:static;height:auto;flex-direction:row;flex-wrap:wrap;align-items:center;gap:8px;padding:14px 12px 12px;border-right:0;border-bottom:1px solid var(--line)}
  .brand{border:0;padding:0}
  .tabs{flex-direction:row;order:3;width:100%;overflow-x:auto}
  .tabs button{white-space:nowrap;padding:9px 12px}
  .me{margin:0 0 0 auto;flex-direction:row;align-items:center}.me .muted{display:none}
  main{padding:16px 14px 60px}
  .head-art{display:none}
  .page-head{flex-wrap:wrap}
}
@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}