.btn-back,a{text-decoration:none}:root{--color-bg:#f9fafc;--color-surface:#ffffff;--color-border:#e5e5e5;--color-text:#222222;--color-text-muted:#555555;--color-text-light:#777777;--color-primary:#034ea3;--color-primary-hover:#023d82;--color-accent:#f18d30;--color-accent-hover:#d97d2a}*,::after,::before{box-sizing:border-box}body,html{height:100%}body{background:var(--color-bg);font-family:"Segoe UI",Roboto,sans-serif;color:var(--color-text);line-height:1.5;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background:#f8f9fa}a{color:inherit}[role=button]:focus-visible,a:focus-visible,button:focus-visible{outline:2px solid var(--color-primary);outline-offset:2px}@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important;scroll-behavior:auto!important}}.site-header{background:var(--color-primary);color:var(--color-surface);padding:40px 20px;border-radius:0 0 12px 12px;box-shadow:0 2px 10px rgba(0,0,0,.12);text-align:center}.course-card,.course-detail{background:var(--color-surface)}.site-header .container{display:flex;flex-direction:column;align-items:center;gap:6px}.site-subtitle,.site-title{display:inline-block;margin:0;padding:0 .3em;border-radius:6px;transition:background-color .25s,color .25s}.site-title a{color:#fff;transition:color .3s}.site-title a:hover{color:#ffeb3b}.site-subtitle:hover,.site-title:hover{background:rgba(255,255,255,.25);color:#fff}.course-card{border:1px solid var(--color-border);border-radius:10px;display:flex;flex-direction:column;position:relative;overflow:hidden}.course-card-body{padding:40px 20px 20px;flex:1;position:relative;z-index:1}.course-title{font-size:1rem;font-weight:600;color:var(--color-text);margin-bottom:.5rem}.course-info{font-size:.95rem;color:var(--color-text-muted);margin-bottom:1rem}.course-meta{font-size:.9rem;color:var(--color-text-light)}.course-footer{padding:12px 20px;border-top:1px solid var(--color-border);text-align:right}.course-detail{max-width:700px;margin:0 auto;padding:25px;border:1px solid var(--color-border);border-radius:10px;box-shadow:0 2px 6px rgba(0,0,0,.05)}.btn-back,.btn-course{padding:6px 14px;font-size:.95rem}.course-detail-title{font-size:1.8rem;margin-bottom:1rem;color:var(--color-text);line-height:1.3}.course-detail-info{font-size:1.05rem;margin-bottom:1.5rem;color:var(--color-text-muted)}.detail-box ul{list-style:none;padding:0;margin:0 0 1.5rem}.detail-box li{padding:10px 0;border-bottom:1px solid #eee;font-size:.95rem}.btn-actions{display:flex;gap:10px;flex-wrap:wrap}.btn-actions .btn{flex:1 1 auto;text-align:center}.btn-course{background:var(--color-primary);border:none;color:#fff;border-radius:6px;transition:background-color .2s,box-shadow .2s}.btn-back,form label{color:var(--color-text)}.btn-course:hover{background:var(--color-primary-hover);color:#fff}.btn-back{background:#f2f2f2;border:none;border-radius:6px;transition:background-color .2s}.btn-back:hover{background:#e2e2e2;color:#000}form .form-control,form .form-select{background-color:var(--color-surface);border:1px solid var(--color-border);border-radius:8px;padding:.6rem .75rem;color:var(--color-text);transition:border-color .2s,box-shadow .2s}.spots-badge,.spots-badge-inline{border-radius:999px;white-space:nowrap}form .form-control::placeholder{color:var(--color-text-light)}form .form-control:focus,form .form-select:focus{border-color:var(--color-primary);box-shadow:0 0 0 .25rem rgba(3,78,163,.15);outline:0}form label{font-weight:600;margin-bottom:.4rem}form .btn-primary{background-color:var(--color-primary);border-color:var(--color-primary);font-weight:600;padding:.6rem 1.2rem;border-radius:8px;transition:background-color .2s,border-color .2s,box-shadow .2s}form .btn-primary:hover{background-color:var(--color-primary-hover);border-color:var(--color-primary-hover)}@media (max-width:768px){.site-header{padding:25px 15px}.site-title{font-size:1.7rem}.course-detail-info,.site-subtitle{font-size:1rem}.course-detail{padding:15px}.course-detail-title{font-size:1.5rem}.detail-box li{font-size:.9rem}.btn-actions{flex-direction:column}.btn-actions .btn{width:100%}}.spots-badge{position:absolute;top:12px;right:12px;z-index:2;background:#e9f7ef;padding:6px 14px;font-size:.7rem;font-weight:700}.availability-strip.is-ok .spots-badge-inline,.spots-badge.is-ok{background:#e9f7ef;color:#0a5c2b;border-color:#cdebd8}.availability-strip.is-low .spots-badge-inline,.spots-badge.is-low{background:#fff7e6;color:#7a4b00;border-color:#ffe3b0}.availability-strip.is-very-low .spots-badge-inline,.spots-badge.is-very-low{background:#fff0f0;color:#7a0000;border-color:#ffc9c9;animation:1.6s ease-in-out infinite pulse}.availability-strip.is-full .spots-badge-inline,.spots-badge.is-full{background:#f1f1f1;color:#777;border-color:#e1e1e1;text-transform:uppercase}.course-spots{display:inline-flex;align-items:center;gap:.4rem;padding:8px 10px;border-radius:8px;font-weight:600;border:1px dashed var(--color-border)}.course-spots.is-ok{background:#f4fbf7;color:#0a5c2b;border-color:#cdebd8}.course-spots.is-low{background:#fff8ec;color:#7a4b00;border-color:#ffe3b0}.course-spots.is-very-low{background:#fff3f3;color:#7a0000;border-color:#ffc9c9}.course-spots.is-full{background:#f7f7f7;color:#a1a1a1;border-color:#e5e5e5}.spots-number{font-size:1.15rem;font-weight:800}.availability-strip{display:grid;grid-template-columns:1fr 200px;gap:14px;align-items:center;padding:12px 14px;border:1px solid var(--color-border);border-radius:10px;background:var(--color-surface);box-shadow:0 2px 6px rgba(0,0,0,.04);margin:10px 0 18px}@media (max-width:576px){.availability-strip{grid-template-columns:1fr}}.availability-left{display:flex;align-items:center;gap:10px;min-width:0}.spots-badge-inline{display:inline-block;padding:6px 12px;font-weight:800;font-size:.95rem;border:1px solid var(--color-border);background:#e5e5e5;color:#111}.availability-text{color:var(--color-text-muted);font-weight:600;overflow:hidden;text-overflow:ellipsis}.capacity-bar{position:relative;height:10px;border-radius:999px;background:#f1f1f1;border:1px solid var(--color-border);overflow:hidden}.capacity-bar .capacity-fill{position:absolute;inset:0 auto 0 0;width:var(--fill,0%);background:linear-gradient(90deg,rgba(3,78,163,.2),rgba(3,78,163,.55));border-right:1px solid rgba(0,0,0,.05);transition:width .35s}@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(200,0,0,.28)}70%{box-shadow:0 0 0 12px rgba(200,0,0,0)}100%{box-shadow:0 0 0 0 rgba(200,0,0,0)}}.spinner-overlay{position:fixed;inset:0;display:none;align-items:center;justify-content:center;background:rgba(255,255,255,.6);z-index:9999}.spinner-overlay.show{display:flex}.spinner-wrapper{position:relative;width:100px;height:100px;border-radius:50%;background:#777;display:flex;align-items:center;justify-content:center}.spinner{width:50px;height:50px;border:6px solid transparent;border-top:6px solid #fff;border-radius:50%;animation:1s linear infinite spin}@keyframes spin{to{transform:rotate(360deg)}}.filter-card{max-width:800px;margin:2rem auto;background:#fff;border-radius:12px;padding:2rem;box-shadow:0 4px 12px rgba(0,0,0,.08);text-align:center}header.navbar{margin-bottom:2rem}.toast-container{position:fixed;bottom:1rem;right:1rem;z-index:1100}.show-less-link,.show-more-link{color:#007bff;text-decoration:none;font-weight:500;margin-left:5px;cursor:pointer}.show-less-link:hover,.show-more-link:hover{text-decoration:underline;color:#0056b3}.course-description{margin-bottom:1.5rem}