*{margin:0;padding:0;box-sizing:border-box}:root{--primary: #2563eb;--primary-dark: #1e40af;--secondary: #8b5cf6;--success: #10b981;--danger: #ef4444;--dark: #1e293b;--gray: #64748b;--light-gray: #f1f5f9;--white: #ffffff;--gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);--shadow: 0 10px 40px rgba(0, 0, 0, .1);--shadow-hover: 0 20px 60px rgba(0, 0, 0, .15)}body{font-family:Inter,sans-serif;background:#16becf;min-height:100vh;color:var(--dark);line-height:1.6}.container{max-width:1200px;margin:0 auto;padding:2rem 1rem}.header{text-align:center;color:var(--white);margin-bottom:3rem;animation:fadeInDown .6s ease-out;position:relative}.language-switcher{position:absolute;top:0;right:0;background:#fff3;border:2px solid rgba(255,255,255,.3);color:var(--white);padding:.5rem 1rem;border-radius:10px;cursor:pointer;font-size:.9rem;font-weight:600;transition:all .3s ease;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.language-switcher:hover{background:#ffffff4d;border-color:#ffffff80;transform:translateY(-2px)}.header-logo{max-width:200px;height:auto;margin:0 auto 1.5rem;display:block}.header h1{font-size:3rem;font-weight:700;margin-bottom:.5rem;text-shadow:0 2px 10px rgba(0,0,0,.2);font-family:"Bree Serif",serif}.header p{font-size:1.25rem;opacity:.95;font-weight:300}.content-wrapper{display:grid;grid-template-columns:1fr 1fr;gap:2rem;align-items:start}.events-section,.registration-section{background:var(--white);border-radius:20px;padding:2rem;box-shadow:var(--shadow);animation:fadeInUp .6s ease-out}.section-title{font-size:1.75rem;font-weight:600;margin-bottom:1.5rem;color:var(--dark)}.event-card{background:var(--light-gray);border-radius:15px;padding:1.5rem;margin-bottom:1rem;cursor:pointer;transition:all .3s ease;border:2px solid transparent;position:relative}.event-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-hover);border-color:var(--primary)}.event-card.selected{background:linear-gradient(135deg,#667eea1a,#764ba21a);border-color:var(--primary)}.event-card-checkbox{position:absolute;top:calc(1rem + 10px);right:calc(1rem - 5px);width:24px;height:24px;cursor:pointer;accent-color:var(--primary)}.event-header{display:flex;justify-content:space-between;align-items:start;margin-bottom:.75rem}.event-title{font-size:1.25rem;font-weight:600;color:var(--dark)}.event-badge{background:var(--success);color:var(--white);padding:.25rem .75rem;border-radius:20px;font-size:.75rem;font-weight:500;margin-right:1rem}.event-badge.full{background:var(--danger)}.event-description{color:var(--gray);font-size:.9rem;margin-bottom:1rem}.event-details{display:grid;grid-template-columns:repeat(2,1fr);gap:.75rem;font-size:.875rem}.event-detail{display:flex;align-items:center;gap:.5rem;color:var(--gray)}.event-detail strong{color:var(--dark)}.schedule{margin-top:1rem;padding-top:1rem;border-top:1px solid #e2e8f0}.schedule-item{display:flex;justify-content:space-between;padding:.5rem 0;font-size:.875rem}.form-group{margin-bottom:1.5rem}.form-label{display:block;margin-bottom:.5rem;font-weight:500;color:var(--dark)}.form-label .required{color:var(--danger)}.form-input{width:100%;padding:.875rem 1rem;border:2px solid #e2e8f0;border-radius:10px;font-size:1rem;font-family:Inter,sans-serif;transition:all .3s ease}.form-input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px #2563eb1a}.form-input.error{border-color:var(--danger)}.form-input.error:focus{border-color:var(--danger);box-shadow:0 0 0 3px #ef44441a}.field-error{color:var(--danger);font-size:.875rem;margin-top:.25rem;display:none}.field-error.show{display:block}.btn{width:100%;padding:1rem 2rem;border:none;border-radius:10px;font-size:1rem;font-weight:600;cursor:pointer;transition:all .3s ease;font-family:Inter,sans-serif}.btn-primary{background:var(--gradient);color:var(--white)}.btn-primary:hover:not(:disabled){transform:translateY(-2px);box-shadow:var(--shadow-hover)}.btn-primary:disabled{opacity:.5;cursor:not-allowed}.alert{padding:1rem;border-radius:10px;margin-bottom:1rem;display:none}.alert.show{display:block;animation:fadeInDown .3s ease-out}.alert-success{background:#d1fae5;color:#065f46;border:1px solid #6ee7b7}.alert-error{background:#fee2e2;color:#991b1b;border:1px solid #fca5a5}.loading{display:none;text-align:center;padding:2rem}.spinner{border:4px solid #f3f4f6;border-top:4px solid var(--primary);border-radius:50%;width:40px;height:40px;animation:spin 1s linear infinite;margin:0 auto 1rem}.success-modal{display:none;position:fixed;top:0;left:0;right:0;bottom:0;background:#00000080;z-index:1000;align-items:center;justify-content:center;animation:fadeIn .3s ease-out}.success-modal.show{display:flex}.modal-content{background:var(--white);border-radius:20px;padding:3rem;max-width:500px;margin:1rem;text-align:center;animation:scaleIn .3s ease-out}.success-icon{width:80px;height:80px;background:var(--success);border-radius:50%;display:flex;align-items:center;justify-content:center;margin:0 auto 1.5rem;animation:bounce .6s ease-out}.success-icon:after{content:"✓";color:var(--white);font-size:3rem;font-weight:700}.qr-code{margin:2rem 0;padding:1.5rem;background:var(--light-gray);border-radius:15px}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes fadeInDown{0%{opacity:0;transform:translateY(-20px)}to{opacity:1;transform:translateY(0)}}@keyframes fadeInUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}@keyframes scaleIn{0%{opacity:0;transform:scale(.9)}to{opacity:1;transform:scale(1)}}@keyframes bounce{0%,to{transform:translateY(0)}50%{transform:translateY(-10px)}}@keyframes spin{to{transform:rotate(360deg)}}@media (max-width: 768px){.header h1{font-size:2rem}.content-wrapper,.event-details{grid-template-columns:1fr}}.hidden{display:none}