:root{--g:#0e8a6a;--g2:#12b386;--gl:#e7f7f1;--b:#1b6fd1;--b2:#3b9bf5;--bl:#e8f2fe;--ink:#17324d;--mut:#5a7088;--line:#d9e6ef;--bg:#f4faf8;--warn:#d97706;--err:#c2410c;--r:18px;--sh:0 8px 28px rgba(16,61,92,.10)}
*{box-sizing:border-box}
[hidden]{display:none!important}
html,body{margin:0;padding:0}
body{font-family:'Tajawal',system-ui,-apple-system,'Segoe UI',Tahoma,Arial,sans-serif;color:var(--ink);background:var(--bg);font-size:19px;line-height:1.6;min-height:100vh;-webkit-tap-highlight-color:transparent}
button,input,select{font-family:inherit;font-size:inherit;color:inherit}
.bg-deco{position:fixed;inset:0;z-index:-1;background:radial-gradient(900px 500px at 100% -10%,#d6f5ea 0,transparent 60%),radial-gradient(800px 500px at -10% 110%,#dcebfd 0,transparent 60%),var(--bg)}
.wrap{max-width:760px;margin:0 auto;padding:18px 16px 40px}
.card{background:#fff;border-radius:24px;box-shadow:var(--sh);padding:26px 22px;border:1px solid #eef4f7}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;border:0;border-radius:16px;padding:16px 26px;font-weight:800;cursor:pointer;transition:transform .08s,box-shadow .2s,background .2s;min-height:58px;text-decoration:none}
.btn:active{transform:scale(.98)}
.btn-primary{background:linear-gradient(135deg,var(--g),var(--g2));color:#fff;box-shadow:0 8px 20px rgba(14,138,106,.30)}
.btn-blue{background:linear-gradient(135deg,var(--b),var(--b2));color:#fff;box-shadow:0 8px 20px rgba(27,111,209,.25)}
.btn-ghost{background:#fff;color:var(--b);border:2px solid #cfe2f8}
.btn-soft{background:var(--bl);color:var(--b)}
.btn[disabled]{opacity:.45;cursor:not-allowed;box-shadow:none}
.btn-big{font-size:1.35em;padding:20px 30px;min-height:70px;width:100%}
.muted{color:var(--mut)}
.err{color:var(--err);font-weight:700;min-height:1.6em;margin:6px 0 0}
.screen{display:none;animation:fade .35s ease}
.screen.active{display:block}
@keyframes fade{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
/* ---- student home ---- */
.hero{text-align:center;padding:30px 20px 26px}
.badge-school{display:inline-flex;align-items:center;gap:8px;background:var(--gl);color:var(--g);font-weight:800;border-radius:999px;padding:8px 18px;font-size:1.05em}
.hero h1{font-size:2.15em;line-height:1.3;margin:18px 0 8px;color:var(--ink);font-weight:800}
.hero h1 span{background:linear-gradient(90deg,var(--g),var(--b));-webkit-background-clip:text;background-clip:text;color:transparent}
.hero .by{color:var(--mut);font-weight:700;margin:0 0 22px}
.icon-row{display:flex;justify-content:center;flex-wrap:wrap;gap:12px;margin:8px 0 26px}
.icon-row .ic{width:64px;height:64px;border-radius:20px;background:#fff;box-shadow:0 4px 14px rgba(16,61,92,.10);display:grid;place-items:center;animation:bob 3s ease-in-out infinite}
.icon-row .ic:nth-child(2){animation-delay:.3s}.icon-row .ic:nth-child(3){animation-delay:.6s}.icon-row .ic:nth-child(4){animation-delay:.9s}.icon-row .ic:nth-child(5){animation-delay:1.2s}.icon-row .ic:nth-child(6){animation-delay:1.5s}
.icon-row svg{width:42px;height:42px}
@keyframes bob{50%{transform:translateY(-6px)}}
.home-actions{display:grid;gap:14px;max-width:440px;margin:0 auto}
.staff-link{margin-top:6px;font-size:.95em}
/* ---- form ---- */
.field{margin:18px 0}
.field label{display:block;font-weight:800;margin-bottom:8px;font-size:1.08em}
.field input,.field select{width:100%;padding:16px 18px;border:2px solid var(--line);border-radius:16px;background:#fbfdff;font-size:1.1em;outline:none;transition:border .2s,box-shadow .2s;min-height:60px}
.field input:focus,.field select:focus{border-color:var(--b2);box-shadow:0 0 0 4px rgba(59,155,245,.15)}
.field .hint{font-size:.85em;color:var(--mut);margin-top:6px}
.class-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}
.top-strip{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:14px}
.top-strip .who{font-weight:800;color:var(--g);background:var(--gl);padding:6px 14px;border-radius:999px;font-size:.92em;max-width:70%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.back-mini{background:none;border:0;color:var(--b);font-weight:800;cursor:pointer;padding:8px}
.welcome h2{font-size:1.6em;margin:0 0 10px;color:var(--g)}
.welcome p{margin:0 0 12px;font-size:1.08em}
.welcome .note{background:var(--bl);border-radius:16px;padding:14px 16px;color:#16467e;font-weight:700}
/* progress */
.progress{margin:6px 0 18px}
.progress .lbl{display:flex;justify-content:space-between;font-weight:800;color:var(--mut);font-size:.95em;margin-bottom:8px}
.bar{height:14px;background:#e6eef4;border-radius:999px;overflow:hidden}
.bar>i{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--g2),var(--b2));border-radius:999px;transition:width .35s ease}
.dots{display:flex;justify-content:space-between;gap:4px;margin-top:10px}
.dots button{flex:1;min-width:0;height:30px;border-radius:8px;border:2px solid var(--line);background:#fff;font-weight:800;font-size:.8em;color:var(--mut);cursor:pointer;padding:0}
.dots button.done{background:var(--gl);border-color:#9fdcc6;color:var(--g)}
.dots button.cur{border-color:var(--b);color:var(--b);box-shadow:0 0 0 3px rgba(27,111,209,.15)}
.q-card{text-align:center}
.q-ico{width:96px;height:96px;margin:0 auto 6px;border-radius:28px;background:linear-gradient(135deg,var(--gl),var(--bl));display:grid;place-items:center}
.q-ico svg{width:66px;height:66px}
.q-num{color:var(--b);font-weight:800;font-size:1em;margin:6px 0 0}
.q-head{display:inline-block;background:var(--gl);color:var(--g);font-weight:800;border-radius:999px;padding:4px 16px;margin:6px 0}
.q-text{font-size:1.45em;font-weight:800;line-height:1.5;margin:8px 0 20px}
.opts{display:grid;gap:12px}
.opt{display:flex;align-items:center;gap:14px;width:100%;text-align:right;padding:16px 18px;border-radius:18px;border:3px solid var(--line);background:#fff;font-size:1.3em;font-weight:800;cursor:pointer;min-height:68px;transition:all .15s}
.opt .face{width:42px;height:42px;flex:none}
.opt .radio{margin-inline-start:auto;width:30px;height:30px;border-radius:50%;border:3px solid #c3d4e2;flex:none;display:grid;place-items:center}
@media (hover:hover){.opt:hover{border-color:#a9c9ea}}
.opt.sel{border-color:var(--g);background:var(--gl);box-shadow:0 6px 18px rgba(14,138,106,.18)}
.opt.sel .radio{border-color:var(--g);background:var(--g)}
.opt.sel .radio::after{content:"";width:10px;height:10px;border-radius:50%;background:#fff}
.nav{display:flex;gap:12px;margin-top:22px}
.nav .btn{flex:1}
.send-zone{margin-top:18px}
.send-zone .miss{background:#fff7ed;color:#9a3412;border-radius:14px;padding:10px 14px;font-weight:700;margin-bottom:10px;display:none}
.spinner{width:22px;height:22px;border:3px solid rgba(255,255,255,.5);border-top-color:#fff;border-radius:50%;animation:spin .8s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
/* success */
.success{text-align:center;padding:34px 22px}
.success .trophy{width:120px;height:120px;margin:0 auto 10px;animation:pop .6s cubic-bezier(.2,1.6,.4,1)}
@keyframes pop{from{transform:scale(.3);opacity:0}to{transform:none;opacity:1}}
.success h2{font-size:2em;margin:6px 0 10px;color:var(--g)}
.success p{font-size:1.15em;margin:6px 0}
.success .team{margin-top:16px;font-weight:800;color:var(--b)}
.success .saved-at{margin-top:14px;font-size:.9em;color:var(--mut)}
.confetti{position:fixed;inset:0;pointer-events:none;overflow:hidden;z-index:50}
.confetti i{position:absolute;top:-20px;width:10px;height:16px;border-radius:3px;animation:fall linear forwards}
@keyframes fall{to{transform:translateY(110vh) rotate(720deg)}}
footer.foot{text-align:center;color:var(--mut);font-size:.85em;margin-top:22px}
@media (max-width:520px){body{font-size:17px}.hero h1{font-size:1.8em}.card{padding:22px 16px}.q-text{font-size:1.3em}.opt{font-size:1.2em}.class-grid{grid-template-columns:repeat(3,1fr)}}
@media (min-width:900px){.wrap{padding-top:34px}}