:root{--green:#17372D;--green-2:#234C3F;--paper:#FAF8F2;--ivory:#F3EFE5;--soft:#EEF1EC;--text:#202522;--muted:#6D756F;--line:#D8D8D0;--copper:#B8734E;--success:#2D6A4F;--red:#9E4438;--shadow:0 16px 40px rgba(23,55,45,.08);--serif:Georgia,'Times New Roman',serif;--sans:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif}*{box-sizing:border-box}html,body{margin:0;min-height:100%;font-family:var(--sans);color:var(--text);background:#F5F3EC}a{color:inherit}.js [hidden]{display:none!important}.skip-link{position:absolute;left:-9999px;top:0}.skip-link:focus{left:12px;top:12px;z-index:1000;background:#fff;padding:10px 12px;border:1px solid var(--line)}.eyebrow{font-size:10px;text-transform:uppercase;letter-spacing:.18em;color:var(--copper);font-weight:800;margin:0 0 12px}.eyebrow.light{color:#E6A783}.muted{color:var(--muted)}.full-screen{min-height:100vh}.state-screen{display:grid;place-items:center;padding:32px}.state-card{max-width:600px;background:#fff;border:1px solid var(--line);padding:42px;box-shadow:var(--shadow)}.mini-brand{font-family:var(--serif);font-size:28px;color:var(--green);letter-spacing:.08em}.mini-brand span{font-family:var(--sans);font-size:14px;letter-spacing:.22em;margin-left:8px}.loader{width:36px;height:36px;border-radius:50%;border:3px solid #D9DDD9;border-top-color:var(--green);animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}
.auth-shell{min-height:100vh;display:grid;grid-template-columns:1.05fr .95fr;background:var(--paper)}.auth-brand-panel{background:var(--green);color:#fff;padding:56px 64px;display:flex;flex-direction:column;min-height:100vh}.auth-wordmark{text-decoration:none;display:flex;align-items:baseline;gap:11px;width:max-content}.word-main{font-family:var(--serif);font-size:32px;letter-spacing:.1em}.word-sub{font-size:13px;letter-spacing:.25em;font-weight:800}.auth-brand-copy{margin:auto 0;max-width:600px}.auth-brand-copy h1{font-family:var(--serif);font-weight:500;font-size:clamp(52px,6vw,84px);line-height:.98;letter-spacing:-.035em;margin:0 0 28px}.auth-brand-copy em{font-weight:400}.auth-brand-copy>p:not(.eyebrow){max-width:520px;color:#DCE5E0;font-size:18px}.auth-brand-footer{font-family:var(--serif);color:#B9C8C1}.auth-form-panel{display:grid;place-items:center;padding:48px}.auth-form-wrap{width:min(460px,100%)}.auth-form-wrap h2{font-family:var(--serif);font-size:46px;line-height:1;margin:0 0 12px;color:var(--green);font-weight:500}.stack-form{display:grid;gap:18px;margin-top:32px}.stack-form label,.modal-card label{font-size:12px;font-weight:700;color:#4D5650;display:grid;gap:7px}.stack-form input,.modal-card input,.modal-card select,.modal-card textarea{width:100%;border:1px solid #CDD2CE;background:#fff;padding:13px 14px;border-radius:5px;outline:none;font:inherit}.stack-form input:focus,.modal-card input:focus,.modal-card select:focus,.modal-card textarea:focus{border-color:var(--green);box-shadow:0 0 0 3px rgba(23,55,45,.10)}.button{border:0;border-radius:5px;padding:12px 17px;font-weight:750;cursor:pointer;text-decoration:none;display:inline-flex;justify-content:center;align-items:center;gap:8px}.button.primary{background:var(--green);color:#fff}.button.primary:hover{background:var(--green-2)}.button.secondary{background:#fff;color:var(--green);border:1px solid var(--line)}.button.small{padding:8px 11px;font-size:12px}.button.full{width:100%}.text-button{border:0;background:none;padding:8px 0;color:var(--green);font-weight:700;cursor:pointer;text-decoration:underline;text-underline-offset:3px}.auth-help{margin-top:34px;font-size:12px;color:var(--muted)}.form-error{padding:12px 14px;border:1px solid #E2B1A9;background:#FFF4F2;color:var(--red);font-size:13px;border-radius:5px}.notice{padding:12px 14px;border:1px solid #B7D3C3;background:#F0F8F3;color:var(--success);font-size:13px;border-radius:5px}
.app-shell{min-height:100vh;display:grid;grid-template-columns:250px 1fr;background:#F6F5F0}.sidebar{height:100vh;position:sticky;top:0;background:var(--green);color:#fff;padding:30px 20px 22px;display:flex;flex-direction:column}.sidebar-brand{padding:0 10px 30px;border-bottom:1px solid rgba(255,255,255,.13)}.sidebar-brand .word-main{font-size:25px}.sidebar-brand .word-sub{font-size:11px}.sidebar-brand small{display:block;color:#AFC1B9;margin-top:6px;font-size:10px;letter-spacing:.08em}.side-nav{display:grid;gap:5px;margin-top:24px}.side-nav button{border:0;background:transparent;color:#DDE7E2;text-align:left;padding:12px 13px;border-radius:5px;display:flex;align-items:center;gap:12px;cursor:pointer}.side-nav button span{width:18px;text-align:center;color:#C6D4CE}.side-nav button:hover,.side-nav button.active{background:rgba(255,255,255,.10);color:#fff}.sidebar-bottom{margin-top:auto;display:grid;gap:8px;padding:0 10px}.sidebar-bottom a{font-size:11px;color:#B9CAC2}.sidebar-signout{color:#fff;text-align:left;text-decoration:none}.app-main{min-width:0}.app-header{height:106px;background:var(--paper);border-bottom:1px solid var(--line);display:flex;align-items:center;padding:0 36px;gap:22px;position:sticky;top:0;z-index:10}.header-context{margin:0 0 3px;font-size:10px;color:var(--copper);letter-spacing:.12em;text-transform:uppercase;font-weight:800}.app-header h1{font-family:var(--serif);font-weight:500;font-size:28px;color:var(--green);margin:0}.profile-chip{margin-left:auto;display:flex;align-items:center;gap:10px}.profile-chip strong,.profile-chip span{display:block}.profile-chip strong{font-size:13px}.profile-chip span{font-size:10px;color:var(--muted);text-transform:capitalize}.avatar{width:39px;height:39px;border-radius:50%;background:var(--ivory);border:1px solid var(--line);display:grid;place-items:center;color:var(--green);font-family:var(--serif);font-weight:700}.mobile-menu{display:none;border:0;background:none;font-size:24px}.content-area{padding:34px 36px 70px;max-width:1500px}.view{display:none}.active-view{display:block}.page-head{display:flex;align-items:end;justify-content:space-between;gap:20px;margin-bottom:26px}.page-head h2{font-family:var(--serif);font-size:34px;font-weight:500;color:var(--green);margin:0}.page-head p{margin:4px 0 0;color:var(--muted);font-size:13px}.actions{display:flex;gap:9px;flex-wrap:wrap}.metric-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:15px;margin-bottom:24px}.metric-card,.panel{background:var(--paper);border:1px solid var(--line);border-radius:7px;box-shadow:0 6px 20px rgba(18,39,31,.035)}.metric-card{padding:21px}.metric-card span{font-size:11px;color:var(--muted);text-transform:uppercase;letter-spacing:.08em}.metric-card strong{display:block;font-family:var(--serif);font-size:33px;color:var(--green);font-weight:500;margin-top:4px}.dashboard-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:18px}.panel{padding:24px}.panel h3{font-family:var(--serif);font-size:22px;font-weight:500;color:var(--green);margin:0 0 18px}.list{display:grid}.list-item{display:grid;grid-template-columns:auto 1fr auto;gap:14px;align-items:center;padding:14px 0;border-top:1px solid var(--line)}.list-item:first-child{border-top:0;padding-top:0}.date-badge{width:46px;height:49px;background:var(--ivory);border:1px solid var(--line);display:grid;place-items:center;border-radius:5px;text-align:center;line-height:1}.date-badge strong{font-family:var(--serif);font-size:20px;color:var(--green)}.date-badge span{font-size:9px;text-transform:uppercase;color:var(--muted)}.list-item h4{margin:0;font-size:13px}.list-item p{margin:3px 0 0;font-size:11px;color:var(--muted)}.pill{font-size:10px;border-radius:999px;padding:5px 8px;background:var(--soft);color:#536158;white-space:nowrap}.pill.success{background:#E8F3EC;color:#2D6A4F}.pill.warn{background:#F8EFE6;color:#925B35}.pill.secure{background:#E8F3EC;color:#2D6A4F}.pill.practising{background:#F7EFE7;color:#9A6039}.pill.learning{background:#EEF0F6;color:#4F5F8A}.pill.not_started{background:#F0F0ED;color:#717771}.table-wrap{overflow:auto;border:1px solid var(--line);background:var(--paper);border-radius:7px}.data-table{width:100%;border-collapse:collapse;min-width:720px}.data-table th,.data-table td{padding:13px 15px;text-align:left;border-bottom:1px solid var(--line);font-size:12px}.data-table th{font-size:10px;text-transform:uppercase;letter-spacing:.08em;color:var(--muted);background:#FAF9F5}.data-table tr:last-child td{border-bottom:0}.empty-state{padding:34px;text-align:center;color:var(--muted);border:1px dashed #CFCBC1;border-radius:7px;background:rgba(255,255,255,.4)}.empty-state strong{display:block;color:var(--green);font-family:var(--serif);font-size:20px;margin-bottom:4px}.skill-list{display:grid;gap:15px}.skill-row{display:grid;grid-template-columns:145px 1fr 50px;gap:12px;align-items:center}.skill-row span{font-size:12px;text-transform:capitalize}.progress-bar{height:8px;background:#E7E5DE;border-radius:99px;overflow:hidden}.progress-bar i{display:block;height:100%;background:var(--copper);border-radius:99px}.report-card{padding:17px 0;border-top:1px solid var(--line)}.report-card:first-child{border-top:0;padding-top:0}.report-card h4{margin:0 0 5px;font-family:var(--serif);font-size:18px;color:var(--green)}.report-card p{margin:0;color:var(--muted);font-size:12px}.account-card{max-width:650px}.account-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}.info-box{border:1px solid var(--line);padding:15px;border-radius:5px}.info-box small{display:block;color:var(--muted);font-size:10px;text-transform:uppercase;letter-spacing:.08em}.info-box strong{display:block;margin-top:3px;font-size:13px}.student-layout{display:grid;grid-template-columns:310px 1fr;gap:18px}.student-list{display:grid;gap:10px}.student-card{width:100%;text-align:left;border:1px solid var(--line);background:var(--paper);border-radius:7px;padding:15px;cursor:pointer}.student-card.active,.student-card:hover{border-color:#AEBAB4;box-shadow:0 8px 20px rgba(23,55,45,.06)}.student-card strong{display:block;color:var(--green);font-family:var(--serif);font-size:18px}.student-card span{font-size:11px;color:var(--muted)}.student-profile-head{display:flex;justify-content:space-between;gap:18px;align-items:flex-start;border-bottom:1px solid var(--line);padding-bottom:20px;margin-bottom:20px}.student-profile-head h3{font-size:28px;margin:0}.student-meta{display:flex;gap:8px;flex-wrap:wrap;margin-top:8px}.student-meta .pill{background:var(--ivory)}.subject-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.subject-card{border:1px solid var(--line);border-radius:6px;padding:16px;background:#fff}.subject-card h4{margin:0 0 5px;color:var(--green);font-family:var(--serif);font-size:18px}.subject-card p{margin:2px 0;color:var(--muted);font-size:11px}.section-stack{display:grid;gap:18px}.topic-list{display:grid}.topic-row{display:grid;grid-template-columns:1.2fr .8fr auto auto;gap:12px;align-items:center;padding:12px 0;border-top:1px solid var(--line)}.topic-row:first-child{border-top:0}.topic-row strong{font-size:12px}.topic-row small{color:var(--muted)}.question-summary{display:grid;grid-template-columns:180px 1fr;gap:24px;align-items:center}.score-ring{width:150px;height:150px;border-radius:50%;background:conic-gradient(var(--green) var(--score,0%),#E5E4DD 0);display:grid;place-items:center;position:relative;margin:auto}.score-ring:before{content:'';position:absolute;inset:14px;border-radius:50%;background:var(--paper)}.score-ring strong{position:relative;z-index:1;font-family:var(--serif);font-size:34px;color:var(--green)}.issue-grid{display:grid;gap:10px}.issue-row{display:grid;grid-template-columns:130px 1fr 40px;gap:10px;align-items:center;font-size:11px}.issue-row span{text-transform:capitalize}.section-title-row{display:flex;justify-content:space-between;gap:12px;align-items:center;margin-bottom:14px}.section-title-row h3{margin:0}.kicker{font-size:10px;text-transform:uppercase;letter-spacing:.13em;color:var(--copper);font-weight:800}.mini-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}.mini-stat{padding:12px;border:1px solid var(--line);border-radius:5px;background:#fff}.mini-stat small{display:block;color:var(--muted);font-size:9px;text-transform:uppercase;letter-spacing:.08em}.mini-stat strong{display:block;color:var(--green);font-family:var(--serif);font-size:22px;margin-top:2px}.modal{border:0;padding:0;background:transparent}.modal::backdrop{background:rgba(12,28,23,.55)}.modal-card{width:min(680px,calc(100vw - 30px));background:#fff;border-radius:8px;padding:26px;box-shadow:0 30px 100px rgba(0,0,0,.25)}.modal-head{display:flex;justify-content:space-between;gap:18px}.modal-head h2{margin:0;font-family:var(--serif);font-weight:500;color:var(--green);font-size:30px}.modal-close{border:0;background:none;font-size:29px;cursor:pointer;color:var(--muted)}#modal-body{display:grid;gap:14px;margin:23px 0}.modal-actions{display:flex;justify-content:flex-end;gap:9px;margin-top:20px}.two-col{display:grid;grid-template-columns:1fr 1fr;gap:12px}.three-col{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
@media(max-width:1150px){.student-layout{grid-template-columns:1fr}.student-list{grid-template-columns:repeat(2,1fr)}.subject-grid{grid-template-columns:1fr 1fr}}@media(max-width:1050px){.metric-grid{grid-template-columns:1fr 1fr}.dashboard-grid{grid-template-columns:1fr}.question-summary{grid-template-columns:1fr}}@media(max-width:760px){.auth-shell{grid-template-columns:1fr}.auth-brand-panel{min-height:310px;padding:34px 28px}.auth-brand-copy{margin:50px 0}.auth-brand-copy h1{font-size:48px}.auth-form-panel{padding:38px 24px}.app-shell{display:block}.sidebar{position:fixed;left:-270px;z-index:30;width:250px;transition:left .2s ease}.sidebar.open{left:0}.mobile-menu{display:block}.app-header{padding:0 18px;height:90px}.content-area{padding:24px 18px 60px}.profile-chip>div:not(.avatar){display:none}.metric-grid{grid-template-columns:1fr 1fr}.page-head{align-items:flex-start;flex-direction:column}.two-col,.three-col,.account-grid,.subject-grid,.student-list{grid-template-columns:1fr}.skill-row{grid-template-columns:110px 1fr 42px}.student-profile-head{flex-direction:column}.topic-row{grid-template-columns:1fr auto}.topic-row>*:nth-child(2){display:none}.question-summary{grid-template-columns:1fr}}@media(max-width:480px){.metric-grid{grid-template-columns:1fr}.auth-brand-panel{min-height:270px}.auth-brand-copy h1{font-size:42px}}

/* v3: editing and parent payments */
.item-actions,.invoice-actions{display:flex;gap:8px;align-items:center;justify-content:flex-end;flex-wrap:wrap}
.button.ghost{background:transparent;border:1px solid var(--line);color:var(--green)}
.button.ghost:hover{background:var(--ivory)}
.topic-note{display:flex;align-items:center;justify-content:space-between;gap:10px}
.invoice-list{display:grid;gap:0}
.invoice-row{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:18px;align-items:center;padding:18px 0;border-bottom:1px solid var(--line)}
.invoice-row:last-child{border-bottom:0}
.invoice-row h4{font-family:var(--serif);font-size:1.65rem;color:var(--green);margin:4px 0}
.invoice-row p{margin:0;color:var(--muted);font-size:.92rem}
.invoice-ref{font-size:.78rem;text-transform:uppercase;letter-spacing:.12em;color:var(--copper);font-weight:700}
.payment-help{margin-top:18px;padding-top:16px;border-top:1px solid var(--line);color:var(--muted)}
.notice-card{margin-top:18px;padding:16px 18px;border:1px solid var(--line);background:#fff;border-radius:14px;display:flex;gap:8px;flex-direction:column}
.pill.danger{background:#f8e3df;color:#8f2f25}
@media(max-width:720px){.invoice-row{grid-template-columns:1fr}.invoice-actions{justify-content:flex-start}.item-actions{justify-content:flex-start}}