@import"https://fonts.googleapis.com/css2?family=Tajawal:wght@400;500;700&display=swap";:root{color-scheme:dark;--c-primary: #3B07A4;--c-secondary: #6A34FF;--c-accent: #00D4FF;--c-bg: #0F172A;--c-bg-soft: #161E33;--c-bg-card: #1B2541;--c-border: #2A3556;--c-border-soft: #20294A;--c-text: #F3F4F6;--c-text-soft: #B6BCD0;--c-text-muted: #7A819A;--gradient-brand: linear-gradient(135deg, #3B07A4 0%, #6A34FF 50%, #00D4FF 100%);--gradient-button: linear-gradient(135deg, #3B07A4 0%, #6A34FF 100%);--gradient-button-hover: linear-gradient(135deg, #4A0DC4 0%, #7E47FF 100%);font-family:Tajawal,Noto Naskh Arabic,ui-sans-serif,Segoe UI,system-ui,sans-serif;font-size:16px;background:var(--c-bg);color:var(--c-text)}*{box-sizing:border-box}html,body,#root{height:100%;margin:0;padding:0;-webkit-user-select:none;user-select:none;-webkit-touch-callout:none;overscroll-behavior:none;touch-action:none}canvas{touch-action:none;-webkit-user-select:none;user-select:none;outline:none}.boot{display:grid;place-items:center;min-height:100vh;padding:2rem;background:radial-gradient(ellipse at top,#1A1238 0%,var(--c-bg) 60%)}.boot-card{width:min(34rem,100%);padding:2rem 2.25rem;border-radius:1.25rem;background:linear-gradient(180deg,var(--c-bg-card) 0%,var(--c-bg-soft) 100%);border:1px solid var(--c-border);box-shadow:0 30px 80px -30px #3b07a480}.boot-error{border-color:#6b2230;background:linear-gradient(180deg,#2a1620,#1a0f15)}.boot-mark{font-size:.85rem;letter-spacing:.18em;color:var(--c-accent);margin-bottom:.5rem;font-weight:500}.boot-title{margin:0 0 .5rem;font-size:1.75rem;font-weight:700;letter-spacing:-.01em;color:var(--c-text)}.boot-sub{margin:0;color:var(--c-text-soft);font-size:.95rem}.boot-pre{margin:1rem 0 0;padding:.75rem 1rem;background:#00000059;border-radius:.5rem;font-family:ui-monospace,SF Mono,Menlo,monospace;font-size:.85rem;color:#f0c2c8;white-space:pre-wrap;word-break:break-word}.stage-shell{display:grid;grid-template-rows:auto 1fr;height:100vh}.stage-canvas{position:relative;width:100%;height:100%;overflow:hidden}.stage-canvas>canvas{width:100%!important;height:100%!important;display:block}.stage-loading{position:absolute;inset:0;display:grid;place-items:center;background:var(--c-bg);color:var(--c-text-soft);font-size:.95rem}.knaad-header{display:flex;justify-content:space-between;align-items:center;padding:.6rem 1.1rem;background:linear-gradient(180deg,var(--c-bg-soft) 0%,var(--c-bg) 100%);border-bottom:1px solid var(--c-border-soft);font-size:.9rem;gap:1rem;min-height:3rem}.knaad-header-left,.knaad-header-right{display:flex;align-items:center;gap:.6rem}.knaad-header-text{display:flex;flex-direction:column;line-height:1.15}.knaad-header-product{font-size:.95rem;font-weight:700;color:var(--c-text);letter-spacing:-.005em}.knaad-header-subtitle,.knaad-header-scenario{font-size:.8rem;color:var(--c-text-soft);font-weight:500}.knaad-header-meta{font-size:.78rem;color:var(--c-text-muted);font-feature-settings:"tnum"}.knaad-header-back,.knaad-header-home,.knaad-header-about{background:transparent;color:var(--c-text-soft);border:1px solid var(--c-border);padding:.45rem .85rem;border-radius:.5rem;font:inherit;font-weight:500;cursor:pointer;transition:all .15s ease}.knaad-header-back:hover,.knaad-header-home:hover,.knaad-header-about:hover{background:#6a34ff1f;border-color:var(--c-secondary);color:var(--c-text)}.intro{min-height:100vh;max-height:100vh;overflow-y:auto;display:grid;place-items:center;align-content:start;gap:1.5rem;padding:3rem 1.5rem;text-align:center;background:radial-gradient(ellipse at 30% 20%,rgba(59,7,164,.35) 0%,transparent 50%),radial-gradient(ellipse at 70% 80%,rgba(0,212,255,.18) 0%,transparent 50%),var(--c-bg);scrollbar-width:thin;scrollbar-color:rgba(0,212,255,.5) rgba(15,23,42,.4)}.intro::-webkit-scrollbar{width:12px}.intro::-webkit-scrollbar-track{background:#0f172a66}.intro::-webkit-scrollbar-thumb{background:linear-gradient(180deg,#00d4ff,#b266ff);border-radius:999px}.intro-beta{display:inline-block;padding:.25rem .85rem;border:1px solid var(--c-accent);border-radius:999px;font-size:.72rem;letter-spacing:.14em;color:var(--c-accent);background:#00d4ff1a;font-weight:500}.intro-logo-frame{display:grid;place-items:center;width:auto;height:auto;background:transparent;border:none;box-shadow:none}.intro-logo{display:block;width:11rem;height:8rem;background:url(/che/knaad-ma-logo.svg) center / contain no-repeat;filter:brightness(0) invert(1) drop-shadow(0 6px 24px rgba(0,212,255,.25))}.intro-tag{margin:0;font-size:1rem;color:var(--c-text-soft);letter-spacing:.04em;font-weight:500}.intro-title{margin:0;font-size:2.25rem;font-weight:700;background:var(--gradient-brand);-webkit-background-clip:text;background-clip:text;color:transparent;letter-spacing:-.015em}.intro-blurb{margin:0 auto;max-width:38rem;color:var(--c-text-soft);font-size:1rem;line-height:1.85;font-weight:400}.intro-vr-notice{display:flex;align-items:center;gap:.85rem;max-width:40rem;margin:.5rem auto 0;padding:.85rem 1.25rem;border:1px solid rgba(0,212,255,.45);border-radius:14px;background:linear-gradient(135deg,#00d4ff1a,#b266ff1a);color:var(--c-text-soft, #cbd5e1);font-size:.92rem;line-height:1.7;text-align:right;box-shadow:0 4px 18px #00d4ff1f}.intro-vr-notice-icon{font-size:1.6rem;flex-shrink:0}.intro-vr-notice-text strong{color:var(--c-accent, #00d4ff);font-weight:600}.intro-vr-notice-divider{display:block;height:1px;margin:.6rem 0;background:linear-gradient(90deg,transparent,rgba(178,102,255,.35),transparent)}.intro-vr-notice-line{display:block;font-size:.88rem;color:var(--c-text-muted, #94a3b8)}.intro-actions{display:flex;flex-wrap:wrap;gap:1rem;justify-content:center;margin-top:1rem}.intro-btn{display:inline-flex;align-items:center;gap:.85rem;padding:1.1rem 1.4rem;min-width:14rem;border-radius:1rem;border:1px solid var(--c-border);background:var(--c-bg-card);color:var(--c-text);font:inherit;cursor:pointer;text-align:right;transition:all .18s ease}.intro-btn:hover{transform:translateY(-2px);border-color:var(--c-secondary);box-shadow:0 12px 30px -12px #6a34ff66}.intro-btn-primary{background:var(--gradient-button);border-color:var(--c-secondary);color:#fff}.intro-btn-primary:hover{background:var(--gradient-button-hover);border-color:var(--c-accent);box-shadow:0 14px 36px -10px #6a34ff8c}.intro-btn-secondary{background:#00d4ff14;border-color:var(--c-accent);color:var(--c-text)}.intro-btn-secondary:hover{background:#00d4ff26;border-color:var(--c-accent);box-shadow:0 14px 36px -10px #00d4ff59}.intro-btn-icon{font-size:1.7rem;line-height:1}.intro-btn-text{display:flex;flex-direction:column;line-height:1.25}.intro-btn-title{font-weight:700;font-size:1.05rem}.intro-btn-sub{font-size:.82rem;opacity:.85;font-weight:400}.intro-secondary-actions{display:flex;gap:1rem;justify-content:center;margin-top:.75rem}.intro-link-btn{background:transparent;border:none;color:var(--c-accent);font:inherit;font-weight:500;padding:.4rem .7rem;cursor:pointer;border-radius:.4rem;transition:background-color .15s ease}.intro-link-btn:hover{background:#00d4ff1a}.lessons{display:flex;flex-direction:column;height:100vh;background:radial-gradient(ellipse at top,rgba(59,7,164,.18) 0%,transparent 40%),var(--c-bg)}.lessons-toolbar{display:flex;align-items:center;gap:.75rem;padding:.85rem 1.25rem;border-bottom:1px solid var(--c-border-soft);background:var(--c-bg-soft);flex-wrap:wrap}.lessons-search{flex:1 1 16rem;max-width:28rem;padding:.6rem .9rem;border-radius:.55rem;background:var(--c-bg);border:1px solid var(--c-border);color:var(--c-text);font:inherit;font-size:.9rem;transition:border-color .15s ease,background-color .15s ease}.lessons-search:focus{outline:none;border-color:var(--c-accent);background:var(--c-bg-card)}.lessons-search::placeholder{color:var(--c-text-muted)}.lessons-search-clear{background:transparent;border:1px solid var(--c-border);color:var(--c-text-muted);padding:.5rem .75rem;border-radius:.45rem;cursor:pointer;font:inherit;font-size:.85rem;transition:all .15s ease}.lessons-search-clear:hover{background:var(--c-bg-card);color:var(--c-text);border-color:var(--c-secondary)}.lessons-search-meta{color:var(--c-text-muted);font-size:.8rem;font-feature-settings:"tnum"}.lessons-toolbar-actions{display:flex;gap:.4rem;margin-inline-start:auto}.lessons-tool-btn{background:transparent;border:1px solid var(--c-border);color:var(--c-text-soft);padding:.5rem .85rem;border-radius:.45rem;font:inherit;font-size:.85rem;font-weight:500;cursor:pointer;transition:all .15s ease}.lessons-tool-btn:hover{background:#6a34ff1f;color:var(--c-text);border-color:var(--c-secondary)}.lessons-rows{flex:1;overflow-y:auto;padding:1.25rem 1.25rem 3rem;display:flex;flex-direction:column;gap:1.25rem}.lessons-empty{text-align:center;color:var(--c-text-muted);padding:4rem 1rem;font-size:.95rem}.lessons-row{background:linear-gradient(180deg,var(--c-bg-card) 0%,var(--c-bg-soft) 100%);border:1px solid var(--c-border-soft);border-radius:1rem;overflow:hidden;flex-shrink:0;transition:border-color .15s ease,box-shadow .15s ease}.lessons-row:hover{border-color:var(--c-border);box-shadow:0 8px 24px -12px #6a34ff40}.lessons-row.is-sandbox{background:linear-gradient(135deg,#3b07a440,#00d4ff1a);border-color:var(--c-accent)}.lessons-row-head{display:flex;align-items:center;gap:.9rem;padding:.95rem 1.1rem;cursor:pointer;background:transparent;border:none;width:100%;text-align:right;font:inherit;color:inherit;transition:background-color .12s ease}.lessons-row-head:hover{background:#ffffff06}.lessons-row-icon{font-size:1.5rem;line-height:1;width:2.4rem;height:2.4rem;display:grid;place-items:center;background:var(--gradient-brand);border-radius:.6rem;flex-shrink:0;box-shadow:0 4px 12px -4px #6a34ff80}.lessons-row-text{flex:1;display:flex;flex-direction:column;gap:.2rem}.lessons-row-name{font-size:1rem;font-weight:700;color:var(--c-text)}.lessons-row-desc{font-size:.85rem;color:var(--c-text-soft);line-height:1.55}.lessons-row-count,.lessons-row-badge{font-size:.78rem;color:var(--c-accent);background:#00d4ff1a;border:1px solid rgba(0,212,255,.4);padding:.25rem .65rem;border-radius:999px;font-feature-settings:"tnum";font-weight:500}.lessons-row-arrow{color:var(--c-text-muted);font-size:.95rem;transition:transform .2s ease}.lessons-row.is-collapsed .lessons-row-arrow{transform:rotate(-90deg)}.lessons-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(15rem,1fr));gap:.85rem;padding:.6rem 1.25rem 1.5rem;border-top:1px solid var(--c-border-soft)}.lessons-row.is-collapsed .lessons-grid{display:none}.lesson-card{display:grid;grid-template-rows:auto auto 1fr auto;gap:.45rem;padding:.95rem 1.05rem;background:var(--c-bg);border:1px solid var(--c-border-soft);border-radius:.75rem;cursor:pointer;text-align:right;font:inherit;color:inherit;transition:all .15s ease}.lesson-card:hover{transform:translateY(-2px);background:var(--c-bg-card);border-color:var(--c-secondary);box-shadow:0 12px 24px -12px #6a34ff66}.lesson-card.is-sandbox{background:var(--gradient-button);border-color:var(--c-accent);color:#fff}.lesson-card.is-sandbox:hover{background:var(--gradient-button-hover);box-shadow:0 14px 28px -10px #00d4ff66}.lesson-card-number{display:inline-block;font-size:.75rem;color:var(--c-text-muted);font-feature-settings:"tnum";font-weight:500}.lesson-card.is-sandbox .lesson-card-number{color:#ffffffb3}.lesson-card-title{margin:0;font-size:.98rem;font-weight:700;color:var(--c-text);line-height:1.4}.lesson-card.is-sandbox .lesson-card-title{color:#fff}.lesson-card-summary{margin:0;font-size:.82rem;color:var(--c-text-soft);line-height:1.6}.lesson-card.is-sandbox .lesson-card-summary{color:#ffffffd9}.lesson-card-cta{margin-top:.3rem;font-size:.82rem;color:var(--c-accent);font-weight:500;letter-spacing:.01em}.lesson-card.is-sandbox .lesson-card-cta{color:#fff}.lessons-stats{display:flex;flex-wrap:wrap;gap:.6rem;padding:.75rem 1.25rem;border-top:1px solid var(--c-border-soft);background:var(--c-bg-soft)}.lessons-stat{display:flex;align-items:center;gap:.55rem;padding:.5rem .85rem;background:var(--c-bg-card);border:1px solid var(--c-border-soft);border-radius:.55rem}.lessons-stat-icon{font-size:1.05rem}.lessons-stat-text{display:flex;flex-direction:column;line-height:1.15}.lessons-stat-title{font-size:.82rem;color:var(--c-text);font-weight:500}.lessons-stat-sub{font-size:.72rem;color:var(--c-text-muted);font-feature-settings:"tnum"}.lessons-mark{display:inline-block;width:2.2rem;height:2.2rem;background:url(/che/knaad-ma-logo.svg) center / contain no-repeat;vertical-align:middle}.about-overlay{position:fixed;inset:0;background:#080a0ed1;display:grid;place-items:center;padding:1.5rem;z-index:1000;backdrop-filter:blur(6px)}.about-modal{position:relative;width:min(34rem,100%);max-height:85vh;overflow-y:auto;padding:2.5rem 2rem 1.75rem;background:linear-gradient(180deg,var(--c-bg-card) 0%,var(--c-bg-soft) 100%);border:1px solid var(--c-border);border-radius:1.25rem;box-shadow:0 30px 80px -20px #3b07a480;text-align:center;display:flex;flex-direction:column;align-items:center;gap:.95rem}.about-logo-frame{display:grid;place-items:center;width:auto;height:auto;margin:0 auto;background:transparent;border:none;box-shadow:none}.about-logo{display:block;width:7rem;height:5rem;background:url(/che/knaad-ma-logo.svg) center / contain no-repeat;filter:brightness(0) invert(1)}.about-tag{margin:0;font-size:.85rem;color:var(--c-accent);letter-spacing:.05em;font-weight:500}.about-title{margin:0;font-size:1.5rem;font-weight:700;background:var(--gradient-brand);-webkit-background-clip:text;background-clip:text;color:transparent}.about-blurb{margin:0;font-size:.95rem;line-height:1.85;color:var(--c-text-soft)}.about-stats{display:flex;justify-content:center;gap:1.5rem;margin:.5rem 0;padding:0;list-style:none}.about-stats>li{display:flex;flex-direction:column;align-items:center;gap:.25rem}.about-stat-num{font-size:1.6rem;font-weight:700;color:var(--c-accent);font-feature-settings:"tnum"}.about-stat-label{display:block;font-size:.78rem;color:var(--c-text-muted)}.about-foot{margin:.5rem 0 0;font-size:.82rem;color:var(--c-text-muted);line-height:1.7;text-align:center}.about-close{position:absolute;top:.85rem;inset-inline-start:.85rem;width:2rem;height:2rem;padding:0;background:transparent;border:1px solid var(--c-border);color:var(--c-text-muted);border-radius:.5rem;font-size:1.05rem;display:grid;place-items:center;cursor:pointer;transition:all .15s ease}.about-close:hover{background:#6a34ff26;color:var(--c-text);border-color:var(--c-secondary)}.feedback-fab{position:fixed;bottom:1.25rem;inset-inline-end:1.25rem;display:inline-flex;align-items:center;gap:.5rem;padding:.7rem 1.1rem;background:var(--gradient-button);color:#fff;border:none;border-radius:999px;font:inherit;font-size:.9rem;font-weight:500;cursor:pointer;box-shadow:0 12px 32px -8px #3b07a48c;z-index:900;transition:all .15s ease}.feedback-fab:hover{background:var(--gradient-button-hover);transform:translateY(-1px)}.feedback-fab-icon{font-size:1.15rem}.feedback-fab-label{font-size:.88rem}.feedback-modal{position:relative;width:min(30rem,100%);padding:1.75rem 1.75rem 1.5rem;background:linear-gradient(180deg,var(--c-bg-card) 0%,var(--c-bg-soft) 100%);border:1px solid var(--c-border);border-radius:1.25rem;box-shadow:0 30px 80px -20px #3b07a480;display:flex;flex-direction:column;gap:.85rem}.feedback-title{margin:0;font-size:1.2rem;font-weight:700;color:var(--c-text);text-align:center}.feedback-form{display:flex;flex-direction:column;gap:.95rem}.feedback-field{display:flex;flex-direction:column;gap:.4rem;font:inherit;width:100%}.feedback-field>span{font-size:.85rem;font-weight:500;color:var(--c-text-soft)}.feedback-field>input,.feedback-field>textarea{width:100%;padding:.6rem .8rem;background:var(--c-bg);border:1px solid var(--c-border);border-radius:.5rem;color:var(--c-text);font:inherit;font-size:.9rem;transition:border-color .15s ease,background-color .15s ease}.feedback-field>textarea{resize:vertical;min-height:7rem;line-height:1.6}.feedback-field>input::placeholder,.feedback-field>textarea::placeholder{color:var(--c-text-muted)}.feedback-field>input:focus,.feedback-field>textarea:focus{outline:none;border-color:var(--c-accent);background:var(--c-bg-card)}.feedback-field>input:disabled,.feedback-field>textarea:disabled{opacity:.6;cursor:not-allowed}.feedback-submit{align-self:stretch;padding:.7rem 1.4rem;background:var(--gradient-button);color:#fff;border:none;border-radius:.55rem;font:inherit;font-weight:600;font-size:.95rem;cursor:pointer;margin-top:.4rem;transition:all .15s ease}.feedback-submit:hover{background:var(--gradient-button-hover);box-shadow:0 10px 24px -8px #6a34ff80}.feedback-submit:disabled{opacity:.5;cursor:not-allowed;background:var(--gradient-button);box-shadow:none}.feedback-tag{font-size:.85rem;color:var(--c-text-muted);text-align:center;line-height:1.6;margin:0}.feedback-tag.is-error{color:#e87a7a}.lab-splash{position:fixed;inset:0;display:grid;place-items:center;align-content:center;gap:1.25rem;padding:3rem 1.5rem;text-align:center;background:radial-gradient(ellipse at 30% 20%,rgba(59,7,164,.55) 0%,transparent 55%),radial-gradient(ellipse at 70% 80%,rgba(0,212,255,.3) 0%,transparent 55%),var(--c-bg, #0f172a);z-index:2000;animation:lab-splash-fade 1.8s ease-in forwards}.lab-splash-beta{display:inline-block;padding:.25rem .85rem;border:1px solid var(--c-accent);border-radius:999px;font-size:.72rem;letter-spacing:.14em;color:var(--c-accent);background:#00d4ff1a;font-weight:500}.lab-splash-logo-frame{display:grid;place-items:center}.lab-splash-logo{display:block;width:11rem;height:8rem;background:url(/che/knaad-ma-logo.svg) center / contain no-repeat;filter:brightness(0) invert(1) drop-shadow(0 6px 24px rgba(0,212,255,.25))}.lab-splash-tag{margin:0;font-size:1rem;color:var(--c-text-soft);letter-spacing:.04em}.lab-splash-title{margin:0;font-size:2rem;font-weight:700;background:var(--gradient-brand, linear-gradient(135deg, #00d4ff, #b266ff));-webkit-background-clip:text;background-clip:text;color:transparent;letter-spacing:-.015em}.lab-splash-sub{margin:.4rem 0 0;color:var(--c-text-muted, #94a3b8);font-size:.95rem;letter-spacing:.04em}@keyframes lab-splash-fade{0%{opacity:1;pointer-events:auto}80%{opacity:1;pointer-events:auto}to{opacity:0;pointer-events:none}}.transition-overlay{position:fixed;inset:0;background:#0f172af0;display:grid;place-items:center;z-index:1500;backdrop-filter:blur(8px)}.transition-spinner{width:2.5rem;height:2.5rem;border:3px solid var(--c-border);border-top-color:var(--c-accent);border-radius:50%;animation:spin .9s linear infinite;margin-bottom:.75rem}.transition-text{text-align:center;color:var(--c-text-soft);font-size:.95rem;font-weight:500}@keyframes spin{to{transform:rotate(360deg)}}