:root{--green:#15715A;--deep:#0d4e3d;--gold:#E08A2B;--cream:#FAF6EE;--ink:#2C2A26;--soft:#E3F0EB;--line:#E3DED4;--muted:#68645C;--shadow:0 12px 38px rgba(29,49,40,.09);font-family:Inter,'Segoe UI',system-ui,-apple-system,sans-serif;color:var(--ink);background:var(--cream)}*{box-sizing:border-box}body{margin:0}button,input,textarea,select{font:inherit}button{cursor:pointer}button:disabled{opacity:.5;cursor:not-allowed}button:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible{outline:3px solid #e7a754;outline-offset:2px}a{color:var(--green)}.page{max-width:1160px;margin:auto;padding:22px 24px 70px}.header{display:flex;align-items:center;gap:14px;justify-content:space-between;margin-bottom:28px}.brand{display:flex;align-items:center;gap:12px;font-weight:800;color:var(--deep);letter-spacing:-.4px}.brand-icon{width:44px;height:44px;background:var(--green);color:#fff;border-radius:15px;display:grid;place-items:center;font-size:25px}.nav{display:flex;gap:6px;flex-wrap:wrap;align-items:center}.nav button{border:0;background:transparent;border-radius:11px;padding:11px 12px;color:var(--muted);font-weight:650}.nav button.active,.nav button:hover{background:var(--soft);color:var(--green)}.nav .user{font-size:12px;color:var(--muted);padding:10px}.card{background:white;border:1px solid var(--line);border-radius:21px;padding:24px;box-shadow:var(--shadow)}.panel{border:1px solid var(--line);border-radius:16px;padding:18px;background:white}.hero{border-radius:26px;background:linear-gradient(100deg,rgba(15,78,59,.95),rgba(18,94,75,.82)),url('/assets/garden.jpg') center 51%/cover;color:white;min-height:240px;display:flex;align-items:center;padding:34px;margin-bottom:20px}.hero-inner{max-width:630px}.hero .eyebrow{color:#d6eccb}.hero h1{color:white;font-size:clamp(27px,4vw,43px);line-height:1.2;margin:13px 0 12px}.hero p{color:#e7f4ec;font-size:15px}.eyebrow{font-size:11px;letter-spacing:1.8px;text-transform:uppercase;color:var(--green);font-weight:800}.muted{color:var(--muted)}.small{font-size:12px}.tiny{font-size:11px}h1{font-size:33px;margin:4px 0 12px;letter-spacing:-.9px}h2{font-size:22px;margin:0 0 14px;letter-spacing:-.4px}h3{font-size:16px;margin:0 0 8px}.grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.grid3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}.stack{display:grid;gap:14px}.row{display:flex;align-items:center;gap:12px}.space{justify-content:space-between}.wrap{flex-wrap:wrap}.button{background:var(--green);border:1px solid var(--green);color:white;padding:12px 18px;border-radius:12px;font-weight:700;min-height:43px}.button:hover{background:var(--deep)}.secondary{background:#fff;color:var(--green);border-color:#b5d5c9}.secondary:hover{background:var(--soft)}.outline{background:transparent;color:var(--ink);border:1px solid var(--line)}.outline:hover{background:var(--cream)}.danger{color:#a42828;border-color:#e9b2b2}.field{display:grid;gap:7px;font-size:13px;font-weight:700}.field input,.field select,.field textarea,input.basic{width:100%;border:1px solid #d6d7cd;background:#fff;border-radius:11px;padding:11px 13px;color:var(--ink);font-size:14px}.field textarea{resize:vertical;min-height:80px}.pill{display:inline-flex;align-items:center;border-radius:99px;background:var(--soft);padding:5px 10px;font-weight:750;font-size:11px;color:var(--green)}.pill.warn{background:#fff0d8;color:#94530e}.pill.bad{background:#fee9e7;color:#a32828}.pill.neutral{background:#f1f0ed;color:#6d685e}.divider{height:1px;background:var(--line);margin:16px 0}.stat{font-weight:850;font-size:30px;color:var(--green);letter-spacing:-1px}.auth-page{min-height:100vh;display:grid;grid-template-columns:minmax(320px,1fr) minmax(390px,1fr)}.auth-art{background:linear-gradient(180deg,rgba(16,67,46,.83),rgba(16,84,63,.76)),url('/assets/garden.jpg') center center/cover;display:flex;flex-direction:column;justify-content:space-between;padding:60px;color:white}.auth-art h1{font-size:clamp(37px,5vw,65px);max-width:560px;line-height:1.08}.auth-art p{max-width:460px;color:#e8f4ed}.auth-form{display:grid;align-content:center;justify-items:center;padding:35px}.auth-form .card{width:min(100%,450px);padding:34px}.hint{background:#f3f7f3;color:var(--deep);padding:13px 15px;border-radius:11px;font-size:13px}.warnbox{background:#fff7e8;padding:12px;border:1px solid #efdab1;border-radius:11px;color:#7d4a10;font-size:13px}.exam-head{position:sticky;top:0;z-index:2;background:rgba(250,246,238,.96);backdrop-filter:blur(12px);padding:13px 0;border-bottom:1px solid var(--line);margin-bottom:20px}.timer{font-size:22px;font-weight:850;color:var(--deep);font-variant-numeric:tabular-nums}.exam-layout{display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:20px;align-items:start}.question{font-size:18px;line-height:1.7;white-space:pre-wrap;margin:14px 0 21px}.question u,.choice u{text-decoration-color:var(--gold);text-decoration-thickness:2px;text-underline-offset:3px}.choice{display:flex;align-items:flex-start;gap:11px;border:1px solid var(--line);border-radius:12px;padding:13px 14px;margin:9px 0;cursor:pointer;line-height:1.5;transition:.15s}.choice:hover{border-color:#6baa98;background:#f7fbf8}.choice.chosen{border:2px solid var(--green);background:#eff8f2;padding:12px 13px}.choice input{margin-top:5px;accent-color:var(--green)}.qnav{display:grid;grid-template-columns:repeat(6,1fr);gap:7px}.qnav button{border:1px solid var(--line);background:white;border-radius:9px;padding:10px 0;font-weight:700}.qnav button.done{background:var(--soft);border-color:#9fcbbb;color:var(--green)}.qnav button.current{background:var(--green);border-color:var(--green);color:white}.progress{height:7px;background:var(--line);border-radius:99px;overflow:hidden}.progress>span{height:100%;display:block;background:var(--green)}.statusline{color:var(--muted);font-size:12px}.table{width:100%;border-collapse:collapse;font-size:13px}.table th,.table td{text-align:left;border-bottom:1px solid var(--line);padding:12px 8px;vertical-align:top}.table th{color:var(--muted);font-size:11px;text-transform:uppercase;letter-spacing:.5px}.notice{font-size:12px;color:var(--muted);padding:14px 0}.result-item{border:1px solid var(--line);border-radius:14px;padding:15px;margin:10px 0}.result-item .question{font-size:14px;margin:7px 0;line-height:1.5}.tag{font-size:11px;color:var(--green);background:var(--soft);border-radius:6px;padding:4px 7px}.review-card{border:1px solid var(--line);padding:17px;border-radius:15px;margin-bottom:14px}.answer-box{display:flex;gap:10px;flex-wrap:wrap}.answer-box button{flex:1;min-width:80px}.alert{position:fixed;bottom:22px;right:22px;background:#1a4638;color:white;padding:14px 20px;border-radius:13px;box-shadow:var(--shadow);max-width:410px;z-index:12}#toast{display:none}.loading{margin:28vh auto;text-align:center;color:var(--green)}.admin-tabs{display:flex;gap:7px;flex-wrap:wrap;margin:0 0 20px}.admin-tabs button{padding:10px 14px;border:1px solid var(--line);border-radius:10px;background:white;color:var(--muted)}.admin-tabs button.active{background:var(--green);color:white}.editor-grid{display:grid;grid-template-columns:190px 1fr;gap:12px}.nowrap{white-space:nowrap}
@media(max-width:800px){.auth-page{display:block}.auth-art{min-height:220px;padding:26px}.auth-art h1{font-size:31px}.auth-form{padding:22px;margin-top:-26px}.auth-form .card{padding:24px}.page{padding:14px 15px 65px}.header{align-items:flex-start;gap:10px;flex-wrap:wrap}.header .brand{font-size:14px}.nav{width:100%;overflow-x:auto;flex-wrap:nowrap}.nav button{white-space:nowrap}.hero{padding:25px;min-height:220px}.hero h1{font-size:29px}.grid,.grid3{grid-template-columns:1fr}.exam-layout{grid-template-columns:1fr}.exam-layout aside{order:-1}.exam-layout aside .qnav{grid-template-columns:repeat(10,1fr)}.exam-head{top:0}.card{padding:17px}.editor-grid{grid-template-columns:1fr}.table{font-size:12px}.table th,.table td{padding:8px 4px}.hide-mobile{display:none}}

.photo-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:12px}.photo-grid img{max-width:100%;height:auto;max-height:350px;object-fit:contain;border-radius:12px;border:1px solid var(--line);background:#f6f2e9}

/* V0.4: mobile handwriting and exam review */
.photo-inputs{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.photo-inputs .field{background:#f7fbf8;border:1px solid #c4dfd4;border-radius:13px;padding:12px}.photo-inputs input{font-size:13px;max-width:100%}.photo-grid a:focus-visible{outline:3px solid #e7a754}.exam-layout .qnav button{min-width:0}.exam-layout .qnav{gap:6px}
@media(max-width:600px){.photo-inputs{grid-template-columns:1fr}.exam-layout aside .qnav{grid-template-columns:repeat(6,minmax(0,1fr))}.exam-layout aside{order:initial}.exam-head .timer{font-size:20px}.exam-head .row{gap:7px}.exam-head .button{padding:10px 12px}.exam-layout .question{font-size:17px}.photo-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.header .nav{padding-bottom:4px}}

/* V0.5.2 — Official Eco-English Garden logo assets (no fallback asterisk). */
.header.header{align-items:center}
.header-brand{display:flex;flex-direction:column;align-items:flex-start;gap:1px;min-width:0}
.header-logo{display:block;width:207px;max-width:100%;height:auto;object-fit:contain}
.auth-brand-lockup{display:block;align-self:flex-start;width:min(330px,96%);background:#fdfaf5;border-radius:15px;padding:8px 12px;box-shadow:0 5px 24px rgba(0,0,0,.08)}
.auth-brand-lockup img{display:block;width:100%;height:auto;object-fit:contain}
@media(max-width:800px){.header-logo{width:172px}.auth-brand-lockup{width:min(280px,92%)} }
@media(max-width:390px){.header-logo{width:155px}}

/* V0.5.3 — Student-first UI, staff-only responsive left navigation. */
.staff-shell{display:grid;grid-template-columns:238px minmax(0,1fr);min-height:100vh;background:var(--cream)}
.staff-sidebar{position:sticky;top:0;height:100vh;overflow-y:auto;padding:22px 14px;display:flex;flex-direction:column;background:linear-gradient(180deg,#124b3d 0%,#092d25 100%);color:#f6f7f3;z-index:31}
.staff-brand{display:grid;gap:4px;padding:8px 8px 23px;border-bottom:1px solid rgba(255,255,255,.16)}
.staff-brand img{display:block;max-width:100%;height:auto;background:#fffdf7;border-radius:10px;padding:7px}
.staff-brand .tiny{color:#c7ded6}
.staff-links{display:grid;gap:3px;margin-top:19px}
.staff-heading{margin:16px 11px 7px;color:#b6d9ce;font-size:10px;font-weight:800;letter-spacing:1.15px}
.staff-link{width:100%;text-align:left;border:0;border-radius:10px;background:transparent;color:#eef9f3;padding:13px;font-weight:650;font-size:13px}
.staff-link:hover,.staff-link.active{background:#e3f0eb;color:#125b46}
.staff-sidebar-foot{display:grid;gap:5px;margin-top:auto;padding:19px 11px 6px;border-top:1px solid rgba(255,255,255,.17);font-size:13px}
.staff-sidebar-foot small{color:#b9d6cb}.staff-sidebar-foot button{margin-top:8px;border:1px solid #63887a;border-radius:9px;padding:10px;background:transparent;color:#fff;text-align:left}
.staff-content{min-width:0}.staff-topbar{height:70px;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;gap:14px;padding:0 30px;background:#fffdf9}
.staff-topbar strong{font-size:16px;color:var(--deep)}.staff-top-user{color:var(--muted);font-size:12px}
.staff-page{max-width:1300px;margin:0 auto;padding:29px 30px 60px}
.staff-menu-toggle{display:none;background:#eef6f1;color:var(--deep);border:1px solid #cce1d8;border-radius:10px;padding:10px 12px;font-weight:700}
.staff-overlay{display:none}.staff-shell .admin-tabs{display:none}
@media(max-width:900px){
 .staff-shell{display:block}.staff-sidebar{position:fixed;inset:0 auto 0 0;width:min(300px,85vw);transform:translateX(-105%);transition:transform .18s ease;box-shadow:0 15px 36px #001a1460}
 .staff-shell.menu-open .staff-sidebar{transform:translateX(0)}.staff-shell.menu-open .staff-overlay{display:block;position:fixed;inset:0;background:#0009;z-index:30}
 .staff-topbar{height:62px;padding:0 16px;justify-content:flex-start}.staff-menu-toggle{display:block}.staff-top-user{margin-left:auto}
 .staff-page{padding:19px 15px 55px}
}
@media(max-width:490px){.staff-top-user{max-width:105px;white-space:nowrap;text-overflow:ellipsis;overflow:hidden}.staff-topbar strong{font-size:14px}.staff-page h1{font-size:27px}}


/* V0.5.5 — Teacher-approved garden visual language. No yellow/cream canvas. */
:root{--cream:#f1faf7;--line:#d6e6df;--muted:#54645f;--shadow:0 12px 40px rgba(19,71,53,.075)}
body{background:linear-gradient(180deg,rgba(239,251,249,.89),rgba(246,253,250,.94)),url('/assets/garden-sky.jpg') center 65%/cover fixed}
.staff-shell{background:#eef8f4}
.staff-content{min-height:100vh;background:linear-gradient(180deg,rgba(241,251,249,.87),rgba(247,253,250,.92)),url('/assets/garden-sky.jpg') center 62%/cover fixed}
.staff-content .card,.staff-content .panel,.staff-content .result-item,.staff-content .review-card{background:rgba(255,255,255,.97);border-color:#d8e9e2}
.staff-topbar{background:rgba(255,255,255,.98);border-color:#d6e7df}
.staff-brand img,.auth-brand-lockup{background:#fff}
.hero{background:linear-gradient(92deg,rgba(12,68,50,.91),rgba(14,82,62,.60)),url('/assets/garden-sunlight.jpg') center 63%/cover}
.auth-art{background:linear-gradient(180deg,rgba(12,72,53,.68),rgba(13,73,53,.82)),url('/assets/garden-sunlight.jpg') center center/cover}
.auth-form{background:linear-gradient(180deg,rgba(237,250,247,.88),rgba(247,253,250,.95)),url('/assets/garden-sky.jpg') center center/cover}
.auth-form .card{background:rgba(255,255,255,.98)}
.exam-head{background:rgba(245,253,250,.98)}
.photo-grid img{background:#f3faf7}
.result-item{background:rgba(255,255,255,.96)}
.ai-extraction-note{background:#eaf6f1;border:1px solid #c4e0d4;border-left:4px solid #15715a;border-radius:12px;padding:13px 16px;margin:15px 0;color:#174c3a;font-size:13px;line-height:1.7}
.ai-extraction-note .tiny{display:inline-block;margin-left:6px;color:#4b685d}
.grid3 .stat{font-size:clamp(23px,2.3vw,30px);overflow-wrap:anywhere}
@media(max-width:900px){body,.staff-content{background-attachment:scroll,scroll}.hero{background-position:center 74%}}
@media(prefers-reduced-motion:reduce){.choice{transition:none}.staff-sidebar{transition:none}}