:root{--bg: #faf9f7;--shell: #e7e4dd;--surface: #ffffff;--text: #1a1a17;--text-2: #56534b;--text-3: #8a877e;--text-4: #a8a59c;--border: #ecebe6;--border-strong: #d9d6ce;--divider: #f2f1ec;--ok: #2f8f60;--ok-bg: #eaf6ef;--ok-text: #1c6b45;--bad: #d24b48;--bad-bg: #fdeeed;--bad-text: #a3322f;--bad-border: #f3d3d2;--wait: #c98a1a;--wait-bg: #fbf2dd;--wait-text: #8a5e07;--info: #3a72c4;--info-bg: #eaf1fc;--info-text: #2a548f;--neutral: #9a968c;--neutral-bg: #f3f2ed;--r-field: 10px;--r-btn: 11px;--r-card: 16px;--r-modal: 18px;--sh-card: 0 1px 2px rgba(20, 20, 15, .04);--sh-raised: 0 1px 3px rgba(20, 20, 15, .08), 0 18px 50px rgba(20, 20, 15, .12);font-family:Onest,system-ui,-apple-system,Segoe UI,Roboto,sans-serif}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font-family:Onest,system-ui,sans-serif;-webkit-font-smoothing:antialiased}.mono{font-family:JetBrains 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14px;border-radius:9px}.nav__item.active{background:var(--ok-bg);color:var(--ok-text);font-weight:600}.topbar__spacer{flex:1}.topbar__right{display:flex;gap:12px;align-items:center}.topbar__user{display:flex;gap:8px;align-items:center;font-size:14px;font-weight:500;color:var(--text-2)}.topbar__sep{width:1px;height:26px;background:var(--border)}.avatar{border-radius:999px;background:var(--info-bg);color:var(--info);display:flex;align-items:center;justify-content:center;font-weight:600;flex:none}.debt-indicator{display:inline-flex;align-items:center;gap:8px;padding:7px 13px;border-radius:10px;background:var(--bad-bg);border:1px solid var(--bad-border);color:var(--bad-text);font-size:13px;font-weight:600;cursor:pointer}.debt-indicator__dot{width:7px;height:7px;border-radius:999px;background:var(--bad)}.bottomnav,.fab{display:none}.main{max-width:1280px;margin:0 auto;padding:22px}.page__head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:18px}.page 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600px){.card-overlay{place-items:center}.card{border-radius:var(--r-modal);box-shadow:0 24px 70px #0006}}.card__header{display:flex;justify-content:space-between;align-items:flex-start;gap:12px}.card__header h2,.card__header h3{margin:0;font-size:20px;font-weight:700}.card__when{color:var(--text-3);margin:4px 0 0;font-size:14px}.card__close{flex:none;width:30px;height:30px;border-radius:9px;background:var(--neutral-bg);border:none;color:var(--text-2);font-size:16px}.card__alert{display:flex;gap:10px;align-items:center;background:var(--bad-bg);border:1px solid var(--bad-border);color:var(--bad-text);font-weight:600;border-radius:12px;padding:12px 14px;margin:14px 0 0}.card__participants{list-style:none;padding:0;margin:14px 0;display:flex;flex-direction:column;gap:2px}.participant{display:flex;flex-wrap:wrap;gap:8px;align-items:center;border-bottom:1px solid var(--divider);padding:9px 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24px;text-align:center}.state--empty{background:var(--surface);border:1px dashed var(--border-strong)}.state--error{background:#fdf4f3;border:1px solid var(--bad-border)}.state__icon{width:48px;height:48px;border-radius:14px;background:var(--neutral-bg);color:var(--text-4);display:flex;align-items:center;justify-content:center;font-size:22px;margin:0 auto 12px}.state__title{font-size:16px;font-weight:600;margin-bottom:4px}.state__sub{font-size:13px;color:var(--text-3);margin-bottom:14px}.skeleton{height:13px;border-radius:6px;background:linear-gradient(90deg,#f0efea 25%,#e7e5df,#f0efea 75%);background-size:200% 100%;animation:sh 1.3s infinite}.calendar-page{background:var(--surface);border:1px solid var(--border);border-radius:var(--r-card);box-shadow:var(--sh-card);overflow:hidden;padding:16px 18px 18px}.fc{--fc-border-color: var(--divider);--fc-page-bg-color: var(--surface);--fc-now-indicator-color: var(--bad);--fc-today-bg-color: rgba(47, 143, 96, .04);--fc-event-border-color: 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8px;height:100%}.ev__time{font-size:10px;font-weight:500;opacity:.85}.ev__title{font-size:12.5px;font-weight:600;line-height:1.2}.ev__sub{font-size:11px;opacity:.85}.ev__badge{position:absolute;top:4px;right:5px;width:16px;height:16px;border-radius:5px;background:var(--bad);color:#fff;font-size:11px;font-weight:700;display:flex;align-items:center;justify-content:center}.login{min-height:100vh;display:grid;place-items:center;padding:16px}.login__form{width:100%;max-width:360px;display:flex;flex-direction:column;gap:12px;background:var(--surface);padding:28px;border-radius:var(--r-modal);box-shadow:var(--sh-raised)}.login__form label{display:flex;flex-direction:column;gap:5px;font-size:13px;font-weight:500;color:var(--text-2)}.login__form input{padding:12px;border:1px solid var(--border-strong);border-radius:var(--r-field);font-size:16px}.login__form button{background:var(--ok);color:#fff;border:none;padding:13px;font-size:16px;border-radius:var(--r-btn)}.login__error{color:var(--bad-text);background:var(--bad-bg);border:1px solid var(--bad-border);border-radius:var(--r-field);padding:10px 12px;margin:0;font-size:13px}.debtors,.payments{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:10px}.debtor,.payment{border:1px solid var(--border);border-radius:13px;padding:13px 15px;background:var(--surface);box-shadow:var(--sh-card)}.debtor__head,.payment__head{display:flex;gap:10px;align-items:baseline;flex-wrap:wrap}.debtor__name,.payment__student{font-weight:600;flex:1}.debtor__total{color:var(--bad-text);font-weight:700}.debtor__meta,.payment__meta{color:var(--text-3);font-size:13px;margin-top:6px;display:flex;gap:10px;align-items:center;flex-wrap:wrap}.debtor__lessons{margin:8px 0 0;padding-left:18px;color:var(--text-3);font-size:13px}.payment__status--APPROVED{color:var(--ok-text)}.payment__status--REJECTED{color:var(--bad-text)}.payment__reason{color:var(--bad-text);font-size:13px}.payment__warn{color:var(--wait-text);font-size:13px}.payment__actions{display:flex;gap:8px;margin-top:10px;flex-wrap:wrap}.new-payment{display:flex;flex-direction:column;gap:10px;max-width:440px;border:1px solid var(--border);border-radius:14px;padding:16px;margin-bottom:16px;background:var(--surface);box-shadow:var(--sh-card)}.new-payment label{display:flex;flex-direction:column;gap:5px;font-size:13px;font-weight:500;color:var(--text-2)}.new-payment select,.new-payment input{padding:11px 12px;border:1px solid var(--border-strong);border-radius:var(--r-field);font-size:15px}.weekday-row{display:flex;gap:7px;flex-wrap:wrap}.weekday{width:42px;text-align:center;padding:8px 0;border-radius:var(--r-field)}.weekday--on{background:var(--ok-bg);border-color:var(--ok);color:var(--ok-text)}@media (max-width: 768px){.topbar{height:52px;padding:0 16px;gap:10px}.topbar .nav,.topbar__user span,.topbar__sep{display:none}.main{padding:14px 14px 84px}.metrics{grid-template-columns:1fr 1fr;gap:12px}.metrics .metric:last-child{grid-column:1 / -1}.dash-row{grid-template-columns:1fr}.bottomnav{position:fixed;left:0;right:0;bottom:0;z-index:30;height:64px;background:var(--surface);border-top:1px solid var(--border);display:flex;align-items:center;justify-content:space-around;padding-bottom:6px}.bottomnav__item{border:none;background:none;display:flex;flex-direction:column;align-items:center;gap:3px;color:var(--text-4);font-size:10px;font-weight:500;position:relative;padding:0 6px}.bottomnav__item.active{color:var(--ok);font-weight:600}.bottomnav__badge{position:absolute;top:-2px;right:8px;width:8px;height:8px;border-radius:999px;background:var(--bad);border:1.5px solid var(--surface)}.fab{display:flex;position:fixed;right:18px;bottom:80px;z-index:31;width:56px;height:56px;border-radius:18px;background:var(--ok);color:#fff;border:none;align-items:center;justify-content:center;font-size:28px;font-weight:300;box-shadow:0 8px 22px #2f8f6066}.page h1,.page__title{font-size:22px}}