:root{--dialog-bg: var(--surface-1);--dialog-text: var(--text-primary);--dialog-text-secondary: var(--text-secondary);--dialog-border: var(--border);--dialog-input-bg: var(--surface-2);--dialog-input-border: var(--border);--dialog-hover-bg: color-mix(in oklch, var(--text-primary), transparent 92%)}.dialog-overlay{position:fixed;inset:0;width:100%;height:100%;max-width:100vw;max-height:100vh;background:color-mix(in srgb,var(--black),transparent 30%);display:flex;align-items:center;justify-content:center;z-index:1100;padding:1rem;backdrop-filter:blur(4px);-webkit-backdrop-filter:blur(4px);animation:dialogBackdropFadeIn .25s ease-out}.dialog-container{background:var(--dialog-bg);border-radius:16px;max-width:500px;width:100%;max-height:90vh;overflow-y:auto;position:relative;box-shadow:0 20px 60px color-mix(in srgb,var(--black),transparent 70%);animation:dialogSlideIn .3s ease-out;color:var(--dialog-text)}@keyframes dialogSlideIn{0%{opacity:0;transform:translateY(-20px) scale(.95)}to{opacity:1;transform:translateY(0) scale(1)}}@keyframes dialogBackdropFadeIn{0%{opacity:0;backdrop-filter:blur(0px)}to{opacity:1;backdrop-filter:blur(4px)}}.dialog-close{position:absolute;top:.75rem;right:.75rem;background:transparent;border:none;font-size:2rem;line-height:1;cursor:pointer;color:var(--dialog-text-secondary);width:36px;height:36px;display:flex;align-items:center;justify-content:center;border-radius:50%;transition:background .2s,color .2s;z-index:2}.dialog-close:hover{background:var(--dialog-hover-bg);color:var(--dialog-text)}.dialog-header{position:sticky;top:0;z-index:100;isolation:isolate;padding:1.5rem 3.5rem 1rem 2rem;border-bottom:1px solid var(--dialog-border);background:var(--dialog-bg)}.dialog-header h2{margin:0 0 .5rem;font-size:1.5rem;color:var(--dialog-text)}.dialog-course-name{margin:0;color:var(--accent-2);font-weight:500}.dialog-form{padding:2rem}.dialog-form .form-group{margin-bottom:1.75rem}.dialog-form label{display:flex;align-items:center;gap:.375rem;margin-bottom:.75rem;font-weight:600;font-size:.9375rem;color:var(--dialog-text);letter-spacing:-.01em}.dialog-form input,.dialog-form textarea{width:100%;padding:.875rem 1rem;border:2px solid var(--dialog-input-border);border-radius:12px;font-size:1rem;background:var(--dialog-input-bg);color:var(--dialog-text);transition:all .25s cubic-bezier(.4,0,.2,1);font-family:inherit}.dialog-form input:hover,.dialog-form textarea:hover{border-color:color-mix(in oklch,var(--accent),transparent 50%)}.dialog-form input:focus,.dialog-form textarea:focus{outline:none;border-color:var(--accent);box-shadow:0 4px 16px color-mix(in oklch,var(--accent),transparent 80%),0 0 0 3px color-mix(in oklch,var(--accent),transparent 90%)}.dialog-form input:disabled,.dialog-form textarea:disabled{opacity:.6;cursor:not-allowed}.dialog-form .input-error{border-color:var(--danger)}.dialog-form .error-message{color:var(--danger);font-size:.875rem;margin-top:.25rem;display:block}.dialog-form .optional-text{color:var(--dialog-text-secondary);font-weight:400;font-size:.875rem}.dialog-form .submit-button{width:100%;background:var(--brand-gradient);background-size:200% 200%;color:var(--white);border:none;padding:1.125rem 1.5rem;font-size:1.0625rem;font-weight:600;border-radius:12px;cursor:pointer;transition:all .3s cubic-bezier(.4,0,.2,1);margin-top:1.25rem;box-shadow:0 4px 16px color-mix(in oklch,var(--accent),transparent 70%);position:relative;overflow:hidden}.dialog-form .submit-button:before{content:"";position:absolute;inset:0;background:linear-gradient(135deg,color-mix(in srgb,var(--white),transparent 80%),transparent);opacity:0;transition:opacity .3s ease}.dialog-form .submit-button:hover:not(:disabled){transform:translateY(-3px);box-shadow:0 8px 24px color-mix(in oklch,var(--accent),transparent 60%),0 4px 12px color-mix(in oklch,var(--accent-2),transparent 70%);background-position:100% 50%}.dialog-form .submit-button:hover:not(:disabled):before{opacity:1}.dialog-form .submit-button:active:not(:disabled){transform:translateY(-1px)}.dialog-form .submit-button:disabled{opacity:.5;cursor:not-allowed;transform:none;box-shadow:none}.dialog-success{padding:3rem 2rem;text-align:center}.dialog-success .success-icon{width:60px;height:60px;background:var(--success);color:var(--white);border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:2rem;margin:0 auto 1rem;animation:successPop .5s ease-out}@keyframes successPop{0%{transform:scale(0)}50%{transform:scale(1.1)}to{transform:scale(1)}}.dialog-success h3{margin:0 0 .5rem;color:var(--dialog-text)}.dialog-success p{margin:0;color:var(--dialog-text-secondary)}.required-star{color:var(--danger);margin-left:2px;font-weight:700}.optional-text{color:var(--dialog-text-secondary);font-weight:400;font-size:.875rem;margin-left:.25rem}.add-info-button{width:100%;display:flex;align-items:center;justify-content:center;gap:.625rem;padding:.875rem 1rem;background:transparent;border:2px dashed var(--dialog-input-border);border-radius:12px;color:var(--dialog-text-secondary);font-size:.9375rem;font-weight:500;cursor:pointer;transition:all .25s cubic-bezier(.4,0,.2,1);margin-bottom:1.5rem}.add-info-button:hover:not(:disabled){border-color:var(--accent);color:var(--accent);background:color-mix(in oklch,var(--accent),transparent 95%);transform:translateY(-1px)}.add-info-button:disabled{opacity:.5;cursor:not-allowed}.add-info-button .add-icon{display:flex;align-items:center;justify-content:center;width:24px;height:24px;background:linear-gradient(135deg,var(--accent),var(--accent-2));color:var(--white);border-radius:6px;font-size:1.25rem;font-weight:600;line-height:1;transition:transform .25s ease}.add-info-button:hover:not(:disabled) .add-icon{transform:rotate(90deg)}.form-section-divider{height:1px;background:linear-gradient(90deg,transparent,var(--dialog-border),transparent);margin:2rem 0}.h-captcha{display:flex;justify-content:center;margin:1rem 0}.checkbox-group{display:grid;grid-template-columns:repeat(auto-fill,minmax(120px,1fr));gap:.625rem;margin-top:.75rem}.checkbox-label{position:relative;display:flex;align-items:center;justify-content:center;gap:.5rem;padding:.875rem 1rem;background:var(--dialog-input-bg);border:2px solid var(--dialog-input-border);border-radius:12px;cursor:pointer;transition:all .25s cubic-bezier(.4,0,.2,1);font-size:.9375rem;font-weight:500;color:var(--dialog-text-secondary);user-select:none;overflow:hidden}.checkbox-label:hover{border-color:color-mix(in oklch,var(--accent),transparent 50%);transform:translateY(-2px);box-shadow:0 4px 12px color-mix(in oklch,var(--accent),transparent 85%)}.checkbox-label input[type=checkbox]{position:absolute;opacity:0;width:0;height:0;pointer-events:none}.checkbox-label input[type=checkbox]:checked+span{font-weight:600;color:var(--accent);position:relative;z-index:1}.checkbox-label input[type=checkbox]:checked+span:before{content:"✓";position:absolute;left:-20px;font-weight:700;color:var(--accent);animation:checkPop .3s cubic-bezier(.68,-.55,.265,1.55)}@keyframes checkPop{0%{transform:scale(0) rotate(-45deg);opacity:0}50%{transform:scale(1.2) rotate(5deg)}to{transform:scale(1) rotate(0);opacity:1}}.checkbox-label:has(input:checked){background:linear-gradient(135deg,color-mix(in oklch,var(--accent),transparent 85%),color-mix(in oklch,var(--accent-2),transparent 85%));border-color:var(--accent);box-shadow:0 4px 16px color-mix(in oklch,var(--accent),transparent 75%),0 0 0 3px color-mix(in oklch,var(--accent),transparent 90%)}.checkbox-label span{position:relative;z-index:1;transition:all .2s ease}.form-select{width:100%;padding:.875rem 3rem .875rem 1rem;background:var(--dialog-input-bg);border:2px solid var(--dialog-input-border);border-radius:12px;color:var(--dialog-text);font-size:1rem;font-weight:500;transition:all .25s cubic-bezier(.4,0,.2,1);cursor:pointer;appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='20' height='20' viewBox='0 0 24 24' fill='none' stroke='%233b82f6' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right .875rem center;background-size:20px;position:relative}.form-select:hover{border-color:color-mix(in oklch,var(--accent),transparent 50%);box-shadow:0 4px 12px color-mix(in oklch,var(--accent),transparent 90%)}.form-select:focus{outline:none;border-color:var(--accent);box-shadow:0 4px 16px color-mix(in oklch,var(--accent),transparent 80%),0 0 0 3px color-mix(in oklch,var(--accent),transparent 90%)}.form-select option{background:var(--dialog-input-bg);color:var(--dialog-text);padding:.75rem;font-weight:500}body.registration-open{overflow:hidden!important;position:fixed!important;width:100%!important}@media(max-width:768px){.dialog-container{max-height:95vh}.dialog-header{padding:1.25rem 3.25rem .875rem 1.5rem}.dialog-form{padding:1.5rem}.dialog-header h2{font-size:1.25rem}.dialog-close{top:.5rem;right:.5rem;width:36px;height:36px}.checkbox-group{gap:.5rem}.checkbox-label{padding:.4rem .6rem;font-size:.85rem}}