:root{--color-brand: #168d83;--color-brand-strong: #123c43;--color-brand-deep: #0b3036;--color-brand-light: #37b4a7;--color-brand-tint: #dff4ef;--color-brand-tint-soft: #eef9f6;--color-ink: #17383d;--color-ink-muted: #31565c;--color-ink-subtle: #5d7c81;--color-on-brand: #fffefa;--color-bg: #fbf8f1;--color-surface: #fffefa;--color-surface-raised: #ffffff;--color-line: #d9e5e2;--color-line-soft: #eaf1ef;--color-success: #168d83;--color-success-soft: #dff4ef;--color-assisted: #e6a63d;--color-assisted-soft: #fff0d3;--color-review: #477eaa;--color-review-soft: #e8f1f7;--color-danger: #b7685d;--color-danger-soft: #faece9;--color-focus: #b8480f;--font-body: system-ui, -apple-system, "Segoe UI", Roboto, "Noto Sans Arabic", "Geeza Pro", Tahoma, sans-serif;--text-xs: .8125rem;--text-sm: .9375rem;--text-base: 1rem;--text-lg: 1.125rem;--text-xl: 1.375rem;--text-2xl: 1.75rem;--text-3xl: clamp(1.75rem, 4vw, 2.5rem);--leading-tight: 1.3;--leading-normal: 1.7;--leading-arabic: 1.9;--space-1: .25rem;--space-2: .5rem;--space-3: .75rem;--space-4: 1rem;--space-5: 1.5rem;--space-6: 2rem;--space-7: 3rem;--space-8: 4rem;--radius: 24px;--radius-md: 16px;--radius-sm: 10px;--radius-pill: 999px;--shadow: 0 22px 70px rgba(21, 66, 71, .13);--shadow-sm: 0 12px 34px rgba(21, 66, 71, .09);--container: 1180px;--container-narrow: 30rem;--transition: .15s ease}[data-surface=student]{--text-base: 1.0625rem;--leading-normal: 1.85}@media (prefers-reduced-motion: reduce){:root{--transition: 0ms}}*,*:before,*:after{box-sizing:border-box}html{-webkit-text-size-adjust:100%}body{margin:0;background:var(--color-bg);color:var(--color-ink);font-family:var(--font-body);font-size:var(--text-base);line-height:var(--leading-normal);-webkit-font-smoothing:antialiased}html[lang=ar] body{line-height:var(--leading-arabic)}h1,h2,h3,h4{margin:0;line-height:var(--leading-tight);text-wrap:balance}html[lang=ar] h1,html[lang=ar] h2,html[lang=ar] h3,html[lang=ar] h4{line-height:1.45}p{margin:0}a{color:var(--color-brand);text-underline-offset:3px}:focus-visible{outline:3px solid var(--color-focus);outline-offset:2px;border-radius:var(--radius-sm)}.visually-hidden{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip-path:inset(50%);white-space:nowrap}.container{width:100%;max-width:var(--container);margin-inline:auto;padding-inline:var(--space-5)}.stack{display:flex;flex-direction:column;gap:var(--space-4)}.center-page{min-height:100dvh;display:grid;place-items:center;padding:var(--space-5)}.card{background:var(--color-surface);border:1px solid var(--color-line);border-radius:var(--radius-md);padding:var(--space-5);box-shadow:var(--shadow-sm)}.card--auth{width:100%;max-width:var(--container-narrow);padding:var(--space-6);border-radius:var(--radius)}.brand{display:inline-flex;align-items:center;gap:var(--space-2);font-weight:800;font-size:var(--text-lg);color:var(--color-brand-strong);text-decoration:none}.brand__mark{width:2rem;height:2rem;flex:none;border-radius:var(--radius-sm);background:linear-gradient(135deg,var(--color-brand-strong),var(--color-brand))}.field{display:flex;flex-direction:column;gap:var(--space-2)}.field__label{font-weight:700;font-size:var(--text-sm)}.field__hint{font-size:var(--text-xs);color:var(--color-ink-subtle)}.field__error{font-size:var(--text-sm);color:var(--color-danger);font-weight:600}.input,.select{width:100%;min-height:3rem;padding:var(--space-3) var(--space-4);font:inherit;color:var(--color-ink);background:var(--color-surface-raised);border:1px solid var(--color-line);border-radius:var(--radius-sm);transition:border-color var(--transition)}.input:hover,.select:hover{border-color:var(--color-brand-light)}.input[aria-invalid=true]{border-color:var(--color-danger)}.input--ltr{direction:ltr;text-align:start}.checkbox{display:flex;align-items:flex-start;gap:var(--space-3);font-size:var(--text-sm);line-height:var(--leading-normal)}.checkbox input{width:1.15rem;height:1.15rem;margin-block-start:.35rem;flex:none;accent-color:var(--color-brand)}.button{display:inline-flex;align-items:center;justify-content:center;gap:var(--space-2);min-height:3rem;padding-inline:var(--space-5);font:inherit;font-weight:700;border:1px solid transparent;border-radius:var(--radius-pill);cursor:pointer;text-decoration:none;transition:background var(--transition),border-color var(--transition)}.button--primary{background:var(--color-brand-strong);color:var(--color-on-brand)}.button--primary:hover:not(:disabled){background:var(--color-brand-deep)}.button--secondary{background:transparent;color:var(--color-brand-strong);border-color:var(--color-line)}.button--secondary:hover:not(:disabled){border-color:var(--color-brand)}.button--block{width:100%}.button:disabled{opacity:.55;cursor:not-allowed}.status{display:inline-flex;align-items:center;padding:var(--space-1) var(--space-3);border-radius:var(--radius-pill);font-size:var(--text-xs);font-weight:700}.status--mastered{background:var(--color-success-soft);color:var(--color-success)}.status--assisted{background:var(--color-assisted-soft);color:#8a5f12}.status--review{background:var(--color-review-soft);color:var(--color-review)}.alert{padding:var(--space-3) var(--space-4);border-radius:var(--radius-sm);font-size:var(--text-sm);border:1px solid transparent}.alert--error{background:var(--color-danger-soft);border-color:var(--color-danger);color:#8c3f35}.alert--success{background:var(--color-success-soft);border-color:var(--color-success);color:var(--color-brand-strong)}