:root{--emerald-300: #6fd7ab;--emerald-400: #34c08a;--emerald-500: #0e9d6e;--emerald-600: #0b7f5a;--emerald-700: #086549;--emerald-glow: rgba(14, 157, 110, .28);--gold-400: #d9bd7c;--gold-500: #c9a44c;--gold-600: #a5813a;--bg: #f6f5f1;--surface: #ffffff;--surface-2: #fbfaf7;--text: #17181a;--text-muted: #6b6f76;--border: #e6e2d8;--danger: #c0392b;--success: var(--emerald-600);--shadow-sm: 0 1px 2px rgba(23, 24, 26, .04), 0 1px 1px rgba(23, 24, 26, .03);--shadow-md: 0 8px 24px rgba(23, 24, 26, .08);--shadow-lg: 0 20px 48px rgba(23, 24, 26, .14);--radius-sm: 10px;--radius-md: 14px;--radius-lg: 20px;--marble-veins: radial-gradient(ellipse 900px 500px at 8% -5%, rgba(201, 164, 76, .05), transparent 55%), radial-gradient(ellipse 700px 600px at 100% 0%, rgba(23, 24, 26, .035), transparent 50%), radial-gradient(ellipse 800px 700px at 15% 100%, rgba(23, 24, 26, .03), transparent 55%), radial-gradient(ellipse 600px 500px at 90% 90%, rgba(14, 157, 110, .025), transparent 50%)}@media(prefers-color-scheme:dark){:root{--bg: #0a0b0d;--surface: #16181b;--surface-2: #1c1f22;--text: #f2f1ec;--text-muted: #9a9d9f;--border: rgba(255, 255, 255, .08);--shadow-sm: 0 1px 2px rgba(0, 0, 0, .4);--shadow-md: 0 8px 28px rgba(0, 0, 0, .45);--shadow-lg: 0 24px 60px rgba(0, 0, 0, .55);--marble-veins: radial-gradient(ellipse 900px 600px at 10% -10%, rgba(14, 157, 110, .1), transparent 55%), radial-gradient(ellipse 800px 700px at 100% 0%, rgba(201, 164, 76, .05), transparent 55%), radial-gradient(ellipse 900px 800px at 50% 120%, rgba(14, 157, 110, .06), transparent 60%)}}*{box-sizing:border-box}html{-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{margin:0;background-color:var(--bg);background-image:var(--marble-veins);background-attachment:fixed;color:var(--text);font-family:-apple-system,BlinkMacSystemFont,SF Pro Text,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;letter-spacing:-.01em}a{color:inherit;text-decoration:none}h1,h2,h3{font-weight:700;letter-spacing:-.02em;line-height:1.15;margin:0 0 8px}h1{font-size:34px}.app-shell{min-height:100vh}.app-sidebar{position:fixed;top:0;left:0;bottom:0;width:248px;display:flex;flex-direction:column;background:var(--surface);border-right:1px solid var(--border);padding:20px 14px;z-index:20}.nav-brand{display:flex;align-items:center;gap:10px;padding:8px 10px 22px}.nav-brand-mark{font-size:24px;color:var(--emerald-500)}.nav-brand-name{font-weight:800;font-size:19px;letter-spacing:-.02em}.nav-items{display:flex;flex-direction:column;gap:3px;flex:1}.nav-item{display:flex;align-items:center;gap:12px;padding:11px 12px;border-radius:var(--radius-sm);color:var(--text);font-weight:600;font-size:14.5px;cursor:pointer;border:none;background:transparent;position:relative;transition:background .12s ease}.nav-item:hover{background:var(--surface-2)}.nav-item-active{background:var(--emerald-500);color:#fff}.nav-item-active:hover{background:var(--emerald-500)}.nav-icon{font-size:17px;width:20px;text-align:center;flex-shrink:0}.nav-item-soon{opacity:.45;cursor:default}.nav-item-soon:hover{background:transparent}.nav-soon-badge{margin-left:auto;font-size:10px;text-transform:uppercase;letter-spacing:.04em;color:var(--text-muted);border:1px solid var(--border);border-radius:999px;padding:2px 6px}.nav-due-badge{margin-left:auto;font-size:11px;font-weight:700;color:#fff;background:var(--emerald-600);border-radius:999px;min-width:20px;text-align:center;padding:1px 6px}.nav-divider{height:1px;background:var(--border);margin:10px 6px}.nav-user{display:flex;align-items:center;gap:8px;padding-top:12px;border-top:1px solid var(--border)}.nav-user-card{display:flex;align-items:center;gap:10px;flex:1;min-width:0;padding:8px;border-radius:var(--radius-sm);background:transparent;border:none;cursor:pointer;text-align:left}.nav-user-card:hover{background:var(--surface-2)}.nav-user-info{display:flex;flex-direction:column;min-width:0}.nav-user-name{font-weight:600;font-size:13.5px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.nav-user-balance{font-size:12.5px;color:var(--emerald-500);font-weight:700}.nav-login-btn{width:100%}.nav-logout{background:transparent;border:1px solid var(--border);border-radius:var(--radius-sm);width:34px;height:34px;color:var(--text-muted);cursor:pointer;flex-shrink:0}.nav-logout:hover{color:var(--danger);border-color:var(--danger)}.avatar-circle{border-radius:50%;flex-shrink:0;object-fit:cover}.avatar-initial{display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,var(--emerald-400),var(--emerald-700));color:#fff;font-weight:700}.app-content{margin-left:248px}.app-main{min-height:100vh}.app-mobile-nav{display:none}@media(max-width:880px){.app-sidebar{display:none}.app-content{margin-left:0}.app-mobile-nav{display:flex;position:fixed;bottom:0;left:0;right:0;background:var(--surface);border-top:1px solid var(--border);padding:8px 6px calc(8px + env(safe-area-inset-bottom));z-index:20}.mobile-nav-item{flex:1;display:flex;flex-direction:column;align-items:center;gap:3px;padding:6px 0;border-radius:var(--radius-sm);color:var(--text-muted);font-size:11px;font-weight:600}.mobile-nav-item .nav-icon{font-size:19px;width:auto}.mobile-nav-item-active{color:var(--emerald-500)}.app-main{padding-bottom:72px}.app-content-no-mobile-nav .app-main{padding-bottom:0}}.page{max-width:1080px;margin:0 auto;padding:40px 32px 60px}.page-narrow{max-width:640px;margin:0 auto;padding:40px 24px 60px}.legal-page h2{font-size:18px;margin:28px 0 10px}.legal-page p,.legal-page li{line-height:1.6;color:var(--text)}.legal-page ul{padding-left:20px;margin:10px 0}.legal-page li{margin-bottom:10px}.page-hero{margin-bottom:28px}.page-hero-sub{font-size:17px;margin-top:4px}.section-title{font-size:15px;text-transform:uppercase;letter-spacing:.04em;color:var(--text-muted);margin:28px 0 12px}.muted{color:var(--text-muted)}.muted-small{color:var(--text-muted);font-size:13px}.error-text{color:var(--danger)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;background:linear-gradient(135deg,var(--emerald-400),var(--emerald-600));color:#fff;border:none;border-radius:var(--radius-sm);padding:12px 22px;font-size:15px;font-weight:700;letter-spacing:-.01em;cursor:pointer;box-shadow:0 6px 16px var(--emerald-glow);transition:transform .12s ease,box-shadow .12s ease,opacity .12s ease}.btn:hover{transform:translateY(-1px);box-shadow:0 10px 22px var(--emerald-glow)}.btn:active{transform:translateY(0)}.btn:disabled{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none}.btn-ghost{background:var(--surface);color:var(--text);border:1px solid var(--border);box-shadow:none}.btn-ghost:hover{box-shadow:var(--shadow-sm);border-color:var(--text-muted)}.btn-small{padding:7px 13px;font-size:13px}.input{width:100%;padding:11px 13px;border:1px solid var(--border);border-radius:var(--radius-sm);background:var(--surface);color:var(--text);font-size:15px;margin:12px 0;font-family:inherit}.input:focus{outline:none;border-color:var(--emerald-500);box-shadow:0 0 0 3px var(--emerald-glow)}.login-page{text-align:center;padding-top:80px}.login-page h1{font-size:44px}.login-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);padding:28px;margin-top:28px;text-align:left;box-shadow:var(--shadow-md)}.login-actions{display:flex;gap:12px;margin-top:8px}.telegram-login-block{display:flex;justify-content:center;min-height:40px}.login-divider{text-align:center;margin:16px 0}.login-dev-details{margin-top:16px}.login-dev-details summary{cursor:pointer}.login-back-link{display:inline-block;margin-bottom:14px;color:var(--text-muted);font-weight:500;background:none;border:none;padding:0;cursor:pointer;font-size:14px}.login-forgot-link{display:block;margin-top:12px;background:none;border:none;padding:0;cursor:pointer;color:var(--text-muted);font-size:13px;text-decoration:underline}.login-forgot-link:hover{color:var(--text)}.login-consent{margin-top:10px;text-align:center}.category-tabs{display:flex;flex-wrap:wrap;gap:8px;margin:20px 0 4px}.category-tab{padding:8px 16px;border-radius:999px;border:1px solid var(--border);background:var(--surface);color:var(--text);font-size:14px;font-weight:600;cursor:pointer;transition:background .15s,border-color .15s}.category-tab:hover{border-color:var(--emerald-600)}.category-tab-active{background:var(--emerald-600);border-color:var(--emerald-600);color:#fff}.course-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(270px,1fr));gap:20px;margin-top:8px}.course-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-sm);transition:transform .16s ease,box-shadow .16s ease,border-color .16s ease}.course-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg);border-color:var(--emerald-400)}.course-card-cover{height:128px;background:linear-gradient(135deg,var(--emerald-600),#0a2e24 120%);display:flex;align-items:center;justify-content:center}.course-card-emblem{font-size:44px;color:#ffffffeb;filter:drop-shadow(0 2px 6px rgba(0,0,0,.35))}.course-card-body{padding:16px 18px 18px}.course-card-body h3{font-size:17px;margin-bottom:4px}.course-card-footer{display:flex;align-items:center;gap:10px;margin-top:12px;flex-wrap:wrap}.course-price{font-weight:700;color:var(--emerald-600)}.modal-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;background:#0000008c;display:flex;align-items:center;justify-content:center;padding:20px;z-index:100}.modal-card{position:relative;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);box-shadow:var(--shadow-md);padding:28px;width:100%;max-width:380px}.modal-card h3{margin:0 0 4px}.modal-close{position:absolute;top:14px;right:14px;background:none;border:none;color:var(--text-muted);font-size:16px;cursor:pointer;line-height:1;padding:4px}.modal-close:hover{color:var(--text)}.checkout-price{font-size:28px;font-weight:800;color:var(--emerald-600);margin:10px 0 18px}.payment-methods{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-bottom:20px}.payment-method-btn{padding:14px 8px;border-radius:var(--radius-sm);border:1px solid var(--border);background:var(--bg);color:var(--text);font-weight:600;font-size:14px;cursor:pointer;transition:border-color .15s,background .15s}.payment-method-btn:hover{border-color:var(--emerald-600)}.payment-method-active{border-color:var(--emerald-600);background:color-mix(in srgb,var(--emerald-500) 14%,var(--bg));box-shadow:0 0 0 1px var(--emerald-600) inset}.trial-credit-notice{background:color-mix(in srgb,var(--emerald-500) 12%,var(--surface));border:1px solid var(--emerald-600);border-radius:var(--radius-sm);padding:12px 16px;margin-top:12px;font-size:14px}.badge-owned{background:var(--emerald-500);color:#fff;padding:2px 9px;border-radius:999px;font-size:12px;font-weight:600}.buy-box{display:flex;align-items:center;gap:16px;flex-wrap:wrap;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);padding:20px 22px;margin:18px 0;box-shadow:var(--shadow-sm)}.course-price-big{font-size:26px;font-weight:800;color:var(--emerald-600);letter-spacing:-.02em}.lesson-list{margin-top:22px;display:flex;flex-direction:column;gap:8px}.lesson-list-item{border:1px solid var(--border);border-radius:var(--radius-md);background:var(--surface);transition:border-color .12s ease}.lesson-list-item:not(.locked):hover{border-color:var(--emerald-400)}.lesson-list-item.locked{opacity:.55}.lesson-list-row{display:flex;align-items:center;justify-content:space-between;padding:13px 18px;font-weight:500}.lesson-back-link{display:inline-block;margin-bottom:14px;color:var(--text-muted);font-weight:500}.lesson-layout{max-width:1040px;margin:0 auto;padding:28px 28px 60px;display:grid;grid-template-columns:minmax(320px,460px) 1fr;gap:32px}@media(max-width:800px){.lesson-layout{grid-template-columns:1fr;padding:16px 18px 8px}}.lesson-board-col{display:flex;flex-direction:column;align-items:center;gap:16px;position:sticky;top:28px;min-width:0;width:100%}@media(max-width:800px){.lesson-board-col{position:static;order:2;width:100%}.lesson-text-col{order:1}}.lesson-nav{display:flex;align-items:center;gap:12px;width:100%;justify-content:center;flex-wrap:wrap}@media(max-width:800px){.lesson-nav{position:sticky;bottom:0;z-index:5;margin:0 -18px;width:calc(100% + 36px);padding:8px 18px calc(8px + env(safe-area-inset-bottom));background:var(--bg);box-shadow:0 -8px 12px -8px #00000059;gap:8px}}.lesson-progress{color:var(--text-muted);font-variant-numeric:tabular-nums;font-weight:600;font-size:13px;flex-basis:100%;text-align:center;order:-1}.btn-icon-nav{display:flex;align-items:center;gap:6px;padding:10px 16px;border-radius:var(--radius-sm);border:1px solid var(--border);background:var(--surface);color:var(--text);font-weight:600;font-size:14px;cursor:pointer;transition:border-color .12s ease}.btn-icon-nav:hover:not(:disabled){border-color:var(--emerald-500)}.btn-icon-nav:disabled{opacity:.4;cursor:not-allowed}.btn-icon-nav-primary{background:linear-gradient(135deg,var(--emerald-400),var(--emerald-600));color:#fff;border-color:transparent;box-shadow:0 4px 12px var(--emerald-glow)}.btn-icon-glyph{font-size:17px;line-height:1}@media(max-width:800px){.btn-icon-nav{flex:1;flex-direction:row;gap:5px;padding:8px 4px;border-radius:10px}.btn-icon-glyph{font-size:16px}.btn-icon-label{font-size:12px}}.lesson-text-col{padding-top:4px}.comment-stack{display:flex;flex-direction:column;gap:16px}.move-explanation{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);padding:24px 26px;box-shadow:var(--shadow-sm)}.comment-box-header{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:10px}.comment-box-header .comment-box-title{margin-bottom:0}.comment-box-title{font-size:11.5px;font-weight:700;text-transform:uppercase;letter-spacing:.05em;color:var(--text-muted);margin-bottom:10px}.comment-flip-btn{background:var(--bg);border:1px solid var(--border);border-radius:999px;padding:4px 12px;font-size:11.5px;font-weight:700;color:var(--emerald-600);cursor:pointer;white-space:nowrap}.comment-flip-btn:hover{border-color:var(--emerald-500)}@media(max-width:800px){.mobile-hidden{display:none}}.teacher-explanation{border-color:var(--gold-500);background:linear-gradient(180deg,rgba(201,164,76,.06),transparent 40%)}.teacher-explanation .comment-box-title{color:var(--gold-600)}.comment-short{font-size:21px;font-weight:700;letter-spacing:-.015em;margin:0 0 10px}.comment-normal{color:var(--text);line-height:1.55;font-size:15.5px}.comment-deep{margin-top:14px}.comment-deep summary{cursor:pointer;color:var(--emerald-600);font-weight:600}.alternatives{margin-top:20px;border-top:1px solid var(--border);padding-top:16px}.alternatives-title{font-weight:700;margin-bottom:10px;font-size:12.5px;color:var(--text-muted);text-transform:uppercase;letter-spacing:.04em}.alternative{display:flex;gap:12px;padding:9px 0;align-items:baseline}.alt-move{font-weight:700;font-family:SF Mono,Consolas,monospace;min-width:48px}.alt-mistake .alt-move{color:var(--danger)}.alt-playable .alt-move{color:var(--gold-600)}.lesson-complete{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);padding:32px;text-align:center;box-shadow:var(--shadow-md)}.lesson-complete h2{font-size:26px}.lesson-complete-actions{display:flex;gap:12px;justify-content:center;margin-top:18px;flex-wrap:wrap}.difficulty-picker{margin-top:18px;max-width:280px;margin-left:auto;margin-right:auto}.difficulty-picker .input{margin:8px 0}.rating-slider{width:100%;margin:10px 0 4px;accent-color:var(--emerald-600)}.rating-slider-ends{display:flex;justify-content:space-between;font-size:12px;color:var(--text-muted)}.settings-section{margin-top:20px}.settings-subsection{margin-top:16px;padding-top:16px;border-top:1px solid var(--border)}.settings-subsection h3{font-size:15px;margin-bottom:4px}.settings-link-rule{background:var(--bg);border:1px solid var(--border);border-radius:var(--radius-sm);padding:10px 14px;margin-top:10px;font-size:13px;color:var(--text-muted)}.settings-link-rule strong{color:var(--text)}.settings-link-col-title{font-weight:600;margin-bottom:4px}.settings-link-columns{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:12px}@media(max-width:640px){.settings-link-columns{grid-template-columns:1fr}}.settings-link-code{font-family:monospace;font-size:22px;font-weight:700;letter-spacing:.08em;background:var(--bg);border:1px solid var(--border);border-radius:var(--radius-sm);padding:8px 12px;display:inline-block;margin:6px 0}.settings-toggle{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:16px 0;border-bottom:1px solid var(--border);cursor:pointer}.settings-toggle:last-child{border-bottom:none}.settings-toggle-title{display:block;font-weight:600;margin-bottom:2px}.settings-toggle input[type=checkbox]{width:20px;height:20px;accent-color:var(--emerald-600);flex-shrink:0}.puzzle-filters{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-bottom:20px}.puzzle-filters .input{width:auto;min-width:180px}.dropdown{position:relative;width:auto}.dropdown-trigger{width:auto;min-width:180px;display:flex;align-items:center;justify-content:space-between;gap:10px;cursor:pointer;text-align:left}.dropdown-caret{font-size:11px;color:var(--text-muted);transition:transform .15s}.dropdown-caret-open{transform:rotate(180deg)}.dropdown-menu{position:absolute;top:calc(100% + 4px);left:0;z-index:50;min-width:100%;max-height:320px;overflow-y:auto;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-sm);box-shadow:var(--shadow-lg);padding:6px;margin:0;list-style:none}.dropdown-option{display:block;width:100%;text-align:left;padding:9px 11px;border:none;border-radius:var(--radius-sm);background:transparent;color:var(--text);font-size:14px;font-family:inherit;cursor:pointer;white-space:nowrap}.dropdown-option:hover{background:var(--surface-2)}.dropdown-option-active{background:var(--emerald-glow);font-weight:600}.puzzle-theme-tags{display:flex;flex-wrap:wrap;gap:6px;margin:10px 0}.puzzle-theme-tag{padding:4px 11px;border-radius:999px;border:1px solid var(--border);background:var(--surface-2);color:var(--text-muted);font-size:12px;font-weight:600}.hint-btn{margin-top:12px}.practice-panel,.game-panel{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);padding:22px 24px;box-shadow:var(--shadow-sm)}.practice-hint{font-size:17px;font-weight:600;margin:0}.practice-message{margin-top:12px;color:var(--danger);font-weight:500}.game-result{font-size:20px;font-weight:700;margin:0 0 8px}.play-ratings{display:flex;gap:12px;flex-wrap:wrap;margin:20px 0}.play-rating-chip{display:flex;flex-direction:column;align-items:center;gap:4px;padding:10px 20px;border:1px solid var(--border);border-radius:var(--radius-md);background:var(--surface)}.play-rating-value{font-size:20px;font-weight:700}.play-time-controls{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:12px;margin-top:12px}.play-time-control-btn{display:flex;flex-direction:column;align-items:center;gap:4px;padding:16px}.play-time-control-label{font-size:16px;font-weight:700}.play-clock{display:flex;justify-content:space-between;align-items:center;align-self:stretch;width:100%;max-width:460px;padding:10px 16px;border:1px solid var(--border);border-radius:var(--radius-md);background:var(--surface);font-weight:600;box-sizing:border-box}.play-clock-time{font-variant-numeric:tabular-nums;font-size:18px}.play-clock-active{background:var(--emerald-glow)}.play-clock-active .play-clock-time{color:var(--emerald-700)}.play-banner{padding:10px 16px;border-radius:var(--radius-md);font-size:14px;font-weight:600;margin-bottom:16px}.play-banner-warning{background:#c9a44c29;color:var(--gold-600);border:1px solid rgba(201,164,76,.35)}.play-banner-danger{background:#c0392b1f;color:var(--danger);border:1px solid rgba(192,57,43,.3)}.play-move-list{display:flex;flex-wrap:wrap;gap:6px 12px;margin-top:16px;font-size:14px;color:var(--text-muted);max-height:200px;overflow-y:auto}.checkpoint{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);padding:24px;box-shadow:var(--shadow-sm)}.checkpoint-question{font-size:19px;font-weight:700;margin-top:0;letter-spacing:-.015em}.checkpoint-options{display:flex;flex-direction:column;gap:9px;margin-top:14px}.checkpoint-option{text-align:left;padding:13px 15px;border:1px solid var(--border);border-radius:var(--radius-sm);background:var(--surface-2);cursor:pointer;font-size:15px;font-family:inherit;color:var(--text);transition:border-color .12s ease}.checkpoint-option:hover:not(:disabled){border-color:var(--emerald-400)}.checkpoint-option:disabled{cursor:default}.checkpoint-option.opt-correct{border-color:var(--emerald-500);background:#0e9d6e1a}.checkpoint-option.opt-wrong{border-color:var(--danger);background:#c0392b14}.checkpoint-option.opt-correct-hint{border-color:var(--emerald-500)}.checkpoint-feedback{margin-top:16px;font-weight:500}.wallet-hero{display:flex;align-items:center;gap:16px;margin-bottom:22px}.wallet-hero-name{font-size:24px;margin-bottom:4px}.wallet-balance-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);padding:24px;display:flex;flex-direction:column;gap:6px;box-shadow:var(--shadow-sm)}.wallet-balance-amount{font-size:40px;font-weight:800;letter-spacing:-.02em;color:var(--emerald-600)}.stats-row{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:16px}.stats-tile{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);padding:16px;display:flex;flex-direction:column;align-items:center;text-align:center;gap:4px;box-shadow:var(--shadow-sm)}.stats-tile-value{font-size:24px;font-weight:800;color:var(--emerald-600)}.stats-tile-label{font-size:12px;color:var(--text-muted)}.promo-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);padding:20px 24px;margin-top:16px;box-shadow:var(--shadow-sm)}.promo-form{display:flex;gap:10px;margin-top:8px}.promo-form .input{flex:1}.promo-success{margin-top:12px;color:var(--emerald-600);font-weight:600}.wallet-history{display:flex;flex-direction:column;gap:2px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-sm)}.wallet-history-row{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:14px 18px;border-bottom:1px solid var(--border)}.wallet-history-row:last-child{border-bottom:none}.wallet-history-kind{font-weight:600;font-size:14.5px}.admin-promo-form{display:flex;flex-wrap:wrap;gap:10px;align-items:center;margin:16px 0 24px;padding:18px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-md)}.admin-promo-form .input{width:auto;min-width:140px;flex:1 1 160px}.admin-promo-form .error-text{width:100%;margin:0}.table-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch;margin-top:12px;border-radius:var(--radius-md);box-shadow:var(--shadow-sm)}.admin-table{width:100%;min-width:560px;border-collapse:collapse;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-md);overflow:hidden}.admin-table th,.admin-table td{text-align:left;padding:11px 16px;border-bottom:1px solid var(--border);font-size:14px}.admin-table th{background:var(--surface-2);color:var(--text-muted);font-weight:700;font-size:11.5px;text-transform:uppercase;letter-spacing:.04em}.admin-table tr:last-child td{border-bottom:none}.admin-table tbody tr:hover{background:var(--surface-2)}.funnel{display:flex;flex-direction:column;gap:12px;margin-top:12px}.funnel-row{display:grid;grid-template-columns:160px 1fr 90px;align-items:center;gap:12px}.funnel-label{font-size:13px;color:var(--text-muted)}.funnel-bar{height:22px;background:var(--surface-2);border-radius:999px;overflow:hidden}.funnel-bar-fill{height:100%;background:linear-gradient(135deg,var(--emerald-400),var(--emerald-600));border-radius:999px;transition:width .3s ease}.funnel-value{font-size:13px;font-weight:700;text-align:right;font-variant-numeric:tabular-nums}.admin-user-link{color:var(--emerald-600);font-weight:700}.badge-admin{background:linear-gradient(135deg,var(--gold-400),var(--gold-600));color:#2a2005;padding:2px 9px;border-radius:999px;font-size:11px;font-weight:700;margin-left:8px}.badge-danger{background:var(--danger);color:#fff;padding:2px 8px;border-radius:999px;font-size:11px;margin-left:8px}.admin-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:16px}@media(max-width:760px){.admin-grid{grid-template-columns:1fr}}.admin-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);padding:20px 22px;box-shadow:var(--shadow-sm)}.admin-card h3{margin-top:0}.admin-form-row{display:flex;gap:10px;align-items:center;margin:10px 0;flex-wrap:wrap}.admin-form-row .input{margin:0;flex:1}.admin-owned-list{list-style:none;margin:10px 0 0;padding:0;display:flex;flex-direction:column;gap:8px}.admin-owned-list li{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:9px 0;border-bottom:1px solid var(--border)}.admin-owned-list li:last-child{border-bottom:none}.amount-positive{color:var(--emerald-600);font-weight:700}.amount-negative{color:var(--danger);font-weight:700}.studio-course-list{display:flex;flex-direction:column;gap:14px;margin-top:20px}.studio-course-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);padding:18px 20px;box-shadow:var(--shadow-sm)}.studio-course-head{display:flex;align-items:flex-start;justify-content:space-between;gap:16px;flex-wrap:wrap}.studio-course-head h3{margin-bottom:2px}.studio-course-actions{display:flex;gap:8px;flex-shrink:0}.studio-status{display:inline-block;font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:.03em;padding:2px 8px;border-radius:999px;margin-left:6px;vertical-align:middle}.studio-status-published{background:var(--emerald-500);color:#fff}.studio-status-draft{background:var(--surface-2);color:var(--text-muted);border:1px solid var(--border)}.studio-lesson-list{list-style:none;margin:12px 0 0;padding:0;border-top:1px solid var(--border)}.studio-lesson-list li{border-bottom:1px solid var(--border)}.studio-lesson-item-btn{display:flex;align-items:center;justify-content:space-between;width:100%;padding:8px 4px;border:none;background:transparent;cursor:pointer;font-size:14px;font-family:inherit;color:var(--text);text-align:left;border-radius:var(--radius-sm)}.studio-lesson-item-btn:hover{background:var(--surface-2)}.studio-lesson-editor{margin-top:16px;padding-top:16px;border-top:1px solid var(--border)}.studio-lesson-editor-head{display:flex;align-items:center;justify-content:space-between;gap:12px}.studio-lesson-editor-head h4{margin:0}.studio-node-list{display:flex;flex-direction:column;gap:12px;margin-top:14px;max-height:420px;overflow-y:auto}.studio-node-row{background:var(--surface-2);border:1px solid var(--border);border-radius:var(--radius-sm);padding:12px 14px}.studio-node-row-head{display:flex;align-items:center;gap:10px;margin-bottom:8px;flex-wrap:wrap}.studio-node-row textarea{margin:0 0 8px}.studio-new-course{margin:16px 0 0;max-width:520px}.studio-checkbox{display:flex;align-items:center;gap:6px;font-size:14px;color:var(--text-muted);white-space:nowrap}.studio-lesson-form{margin-top:16px;padding-top:16px;border-top:1px solid var(--border);display:flex;flex-direction:column;gap:4px}.studio-moves-input{font-family:SF Mono,Consolas,monospace;font-size:14px;resize:vertical;min-height:70px}.studio-preview{margin-top:14px;background:var(--surface-2);border:1px solid var(--border);border-radius:var(--radius-sm);padding:10px 14px;display:flex;flex-direction:column;gap:4px;max-height:260px;overflow-y:auto}.studio-preview-row{display:flex;align-items:baseline;gap:8px;font-size:13.5px}.studio-preview-ply{color:var(--text-muted);min-width:22px}.studio-preview-san{font-family:SF Mono,Consolas,monospace;font-weight:700;min-width:56px}.studio-preview-motifs{color:var(--emerald-600);font-weight:600}.studio-preview-syzygy{color:var(--gold, #c9a44c);font-weight:600;border:1px solid currentColor;border-radius:999px;padding:1px 8px;font-size:12px;cursor:help}.studio-preview-win{font-variant-numeric:tabular-nums;color:var(--text-muted);font-size:12.5px}.studio-preview-noengine{margin:0 0 8px;font-style:italic}.studio-move-class{font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:.03em;padding:1px 7px;border-radius:999px}.studio-move-class-inaccuracy{background:#c9a44c2e;color:var(--gold-600)}.studio-move-class-mistake{background:#e67e2226;color:#c0621a}.studio-move-class-blunder,.studio-move-class-missed_win{background:#c0392b1f;color:var(--danger)}
