:root{--bg:#f6f6f4;--surface:#fff;--ink:#242424;--muted:#777;--line:rgba(34,42,53,.10);--studio:#e5e7eb;--studio-ink:#374151;--online:#d9f99d;--online-ink:#365314;--booked:#242424;--radius:16px;--shadow:0 0 0 1px rgba(34,42,53,.08),0 8px 24px rgba(34,42,53,.07)}
*{box-sizing:border-box}html,body{margin:0;min-height:100%;max-width:100%;overflow-x:hidden;background:var(--bg);color:var(--ink);font:14px/1.45 Inter,system-ui,sans-serif}button,input,select,textarea{font:inherit}button{cursor:pointer}.hidden{display:none!important}
.loading-screen,.login-view{min-height:100vh;display:grid;grid-template-columns:minmax(0,470px);justify-content:center;align-items:center;padding:24px}.loading-screen{text-align:center;color:var(--muted)}.login-card{width:100%;max-width:min(470px,calc(100vw - 48px));min-width:0;background:#fff;padding:48px;border-radius:24px;box-shadow:var(--shadow);text-align:center}.login-card h1{font-size:42px;letter-spacing:-.045em;margin:8px 0 14px}.lead{font-size:17px;color:var(--muted);margin:0 auto 28px;max-width:360px}.privacy-note{font-size:12px;color:var(--muted);margin:18px 0 0}.voice-mark{width:42px;height:42px;border-radius:12px;background:#242424;color:#fff;display:grid;place-items:center;font-weight:700;letter-spacing:-.04em}.voice-mark.large{width:68px;height:68px;border-radius:20px;font-size:22px;margin:0 auto 22px}.eyebrow{margin:0;color:#898989;font-size:11px;font-weight:700;letter-spacing:.12em}
.app-shell{max-width:1480px;margin:auto;padding:18px 24px 60px}.topbar{display:flex;align-items:center;justify-content:space-between;padding:10px 2px 22px}.brand{display:flex;align-items:center;gap:12px}.brand div:last-child{display:grid}.brand strong{font-size:15px}.brand span{font-size:12px;color:var(--muted)}.topbar-actions{display:flex;align-items:center;gap:10px}.role-badge,.count-pill{border-radius:999px;background:#eee;padding:6px 10px;font-size:11px;font-weight:700}.hero-strip{display:flex;justify-content:space-between;align-items:end;gap:20px;padding:36px 4px}.hero-strip h1{font-size:36px;letter-spacing:-.04em;margin:7px 0}.hero-strip p:last-child{color:var(--muted);margin:0}
.card{background:var(--surface);border-radius:var(--radius);box-shadow:var(--shadow)}.calendar-toolbar{position:sticky;top:10px;z-index:10;display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:16px;padding:12px 14px;margin-bottom:16px}.calendar-toolbar h2{margin:0;font-size:18px}.month-nav,.mode-filter{display:flex;gap:8px;align-items:center}.mode-filter{justify-content:flex-end}.primary-button,.ghost-button,.icon-button,.filter-chip{border:0;border-radius:10px;min-height:44px;padding:0 15px;font-weight:600}.primary-button{background:#242424;color:#fff;box-shadow:inset 0 2px rgba(255,255,255,.15)}.primary-button:hover{background:#111}.primary-button.full{width:100%}.ghost-button,.icon-button,.filter-chip{background:#fff;box-shadow:0 0 0 1px var(--line);color:var(--ink)}.filter-chip.active{background:#242424;color:#fff}.icon-button{width:44px;padding:0;font-size:18px}.dot{width:8px;height:8px;border-radius:50%;display:inline-block;margin-right:7px}.dot.studio{background:#9ca3af}.dot.online{background:#84cc16}
.content-grid{display:grid;grid-template-columns:minmax(0,1fr) 330px;gap:16px}.calendar-card{overflow:hidden}.weekday-row,.calendar-grid{display:grid;grid-template-columns:repeat(7,minmax(0,1fr))}.weekday-row{background:#fafafa;border-bottom:1px solid var(--line);color:var(--muted);font-size:11px;font-weight:700;text-transform:uppercase}.weekday-row span{padding:12px;text-align:center}.day-cell{min-height:165px;padding:10px;border-right:1px solid var(--line);border-bottom:1px solid var(--line);background:#fff}.day-cell:nth-child(7n){border-right:0}.day-cell.outside{background:#fafafa;color:#bbb}.day-head{display:flex;justify-content:space-between;margin-bottom:8px}.day-number{width:28px;height:28px;display:grid;place-items:center;border-radius:50%;font-weight:600}.day-cell.today .day-number{background:#242424;color:#fff}.day-count{font-size:10px;color:var(--muted)}.slot-stack{display:grid;gap:6px}.slot-card{width:100%;border:0;border-radius:9px;padding:8px;text-align:left;display:grid;gap:2px;transition:.16s transform,.16s box-shadow}.slot-card:hover{transform:translateY(-1px);box-shadow:0 5px 12px rgba(0,0,0,.08)}.slot-card.studio{background:var(--studio);color:var(--studio-ink)}.slot-card.online{background:var(--online);color:var(--online-ink)}.slot-time{font-weight:700}.slot-meta{font-size:10px;opacity:.8}.slot-card.booked{background:#f0ede7;border-left:3px solid #242424}.slot-card.closed{opacity:.45;text-decoration:line-through}.empty-day{font-size:11px;color:#b0b0b0;padding:8px 2px}
.schedule-card{padding:18px;align-self:start;position:sticky;top:82px}.section-title{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px}.section-title h2{font-size:20px;margin:4px 0}.booking-list{display:grid;gap:9px}.booking-item{padding:13px;border-radius:12px;background:#fafafa;box-shadow:inset 0 0 0 1px var(--line)}.booking-item header{display:flex;justify-content:space-between;gap:8px}.booking-item time{font-weight:700}.booking-item p{margin:5px 0;color:var(--muted);font-size:12px}.booking-item button{border:0;background:transparent;color:#a33;padding:4px 0;font-size:12px}.empty-state{padding:28px 10px;text-align:center;color:var(--muted)}.legend{margin-top:16px;padding:15px;display:flex;gap:28px}.legend>div{display:grid;grid-template-columns:14px auto;column-gap:8px;align-items:center}.legend small{grid-column:2;color:var(--muted)}.legend-swatch{width:12px;height:12px;border-radius:4px}.legend-swatch.studio{background:var(--studio)}.legend-swatch.online{background:var(--online)}.legend-swatch.booked{background:var(--booked)}
.modal{border:0;border-radius:20px;padding:0;width:min(520px,calc(100% - 28px));box-shadow:0 24px 70px rgba(0,0,0,.24)}.modal::backdrop{background:rgba(15,15,15,.38);backdrop-filter:blur(4px)}.modal form{padding:24px}.modal.compact{width:min(440px,calc(100% - 28px))}.modal-head{display:flex;justify-content:space-between;align-items:start;margin-bottom:20px}.modal-head h2{margin:5px 0 0;font-size:24px}.modal label{display:grid;gap:7px;margin:14px 0;font-weight:600}.modal input,.modal select,.modal textarea{width:100%;border:0;border-radius:10px;padding:12px;background:#f5f5f5;box-shadow:inset 0 0 0 1px var(--line)}.form-row{display:grid;grid-template-columns:1fr 1fr;gap:12px}.form-help{font-size:12px;color:var(--muted)}.booking-summary{padding:15px;border-radius:12px;background:#f5f5f5}.toast{position:fixed;right:24px;bottom:24px;background:#242424;color:#fff;padding:13px 16px;border-radius:12px;box-shadow:var(--shadow);transform:translateY(120px);opacity:0;transition:.2s}.toast.show{transform:none;opacity:1}.toast.error{background:#9f2828}
@media (max-width: 1000px){.content-grid{grid-template-columns:1fr}.schedule-card{position:static}.day-cell{min-height:140px}.calendar-toolbar{grid-template-columns:1fr auto}.mode-filter{grid-column:1/-1;justify-content:flex-start}}
@media (max-width: 720px){.app-shell{padding:12px 12px 40px}.login-view{grid-template-columns:minmax(0,1fr)}.login-card{width:calc(100vw - 48px);min-width:0}.topbar{padding-bottom:10px}.brand span{display:none}.hero-strip{padding:24px 2px}.hero-strip h1{font-size:29px}.calendar-toolbar{position:static;grid-template-columns:1fr}.calendar-toolbar h2{grid-row:1;text-align:center}.month-nav{justify-content:center}.mode-filter{overflow:auto}.content-grid{display:block}.calendar-card{background:transparent;box-shadow:none}.weekday-row{display:none}.calendar-grid{display:grid;grid-template-columns:1fr;gap:10px}.day-cell,.day-cell:nth-child(7n){min-height:0;border:0;border-radius:14px;box-shadow:var(--shadow)}.day-cell.outside{display:none}.day-cell:has(.empty-day){display:none}.day-head{align-items:center}.slot-stack{grid-template-columns:repeat(2,minmax(0,1fr))}.schedule-card{margin-top:14px}.legend{display:grid;gap:12px}.login-card{padding:34px 22px}.form-row{grid-template-columns:1fr}.teacher-only{width:100%}.hero-strip{display:grid}.topbar-actions .role-badge{display:none}}