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var(--transition-fast);font-size:.875rem}.logout-btn:hover{color:var(--color-primary)}@media (width<=768px){.mobile-menu-btn{display:block}.nav{background-color:var(--color-white);padding:var(--spacing-4);box-shadow:var(--shadow-md);gap:var(--spacing-4);opacity:0;visibility:hidden;transition:all var(--transition-normal);flex-direction:column;position:absolute;top:70px;left:0;right:0;transform:translateY(-100%)}.nav.nav-open{opacity:1;visibility:visible;transform:translateY(0)}.account-dropdown{flex-direction:column;align-items:flex-start;width:100%}}.footer{background-color:var(--color-primary);color:var(--color-white);padding:var(--spacing-8) 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ease-out;position:absolute;inset:-5%}.hero-bg{z-index:1;background-image:url(/parallax/bg.png)}.hero-doctor{z-index:3;background-image:url(/parallax/doctor.png);background-position:10% 100%;background-repeat:no-repeat;background-size:contain;top:5%;bottom:-20%}.hero-nurse{z-index:3;background-image:url(/parallax/nurse.png);background-position:93% 100%;background-repeat:no-repeat;background-size:contain;top:5%;bottom:-20%}.hero-overlay{z-index:2;background:linear-gradient(#0000004d 0%,#0006 50%,#00000059 100%);position:absolute;inset:0}.hero-content{z-index:10;max-width:800px;position:relative}.hero-title{letter-spacing:2px;margin-bottom:var(--spacing-2);text-shadow:0 4px 12px #0009,0 1px 4px #000000e6;font-size:4.5rem}.hero-subtitle{margin-bottom:var(--spacing-6);text-shadow:0 4px 12px #0009,0 1px 4px #000000e6;font-size:3.75rem}.hero-description{margin-bottom:var(--spacing-8);text-shadow:0 2px 8px #000000b3,0 1px 2px #000000e6;font-size:1.75rem;line-height:1.8}.hero-btn{padding:var(--spacing-3) var(--spacing-10);box-shadow:var(--shadow-md);font-size:1.125rem}.recommended-section{padding:var(--spacing-16) 0;background-color:var(--color-bg)}.section-title{text-align:center;margin-bottom:var(--spacing-12)}.course-grid{justify-content:center;gap:var(--spacing-8);margin-bottom:var(--spacing-10);grid-template-columns:repeat(auto-fit,minmax(300px,350px));display:grid}.course-card{background:var(--color-white);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);transition:transform var(--transition-normal), box-shadow 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span{color:#fff;letter-spacing:1px;font-size:1.5rem;font-weight:700}.course-info{padding:var(--spacing-6);flex-direction:column;flex:1;display:flex}.course-title{margin-bottom:var(--spacing-4);font-size:1.25rem}.course-detail{color:var(--color-text-light);margin-bottom:var(--spacing-1);font-size:.875rem}.course-btn{margin-top:auto;margin-top:var(--spacing-6);border-color:var(--color-primary);color:var(--color-primary);text-align:center;align-self:flex-start;width:100%}.course-btn:hover{background-color:var(--color-primary);color:var(--color-white)}.course-btn.disabled{border-color:var(--color-border);color:var(--color-text-light);cursor:not-allowed;background:0 0}.course-btn.disabled:hover{color:var(--color-text-light);background:0 0}.view-all-container{text-align:center;margin-top:var(--spacing-8)}.view-all-link{color:var(--color-primary);text-underline-offset:4px;transition:color var(--transition-fast);font-weight:500;text-decoration:underline}.view-all-link:hover{color:var(--color-primary-hover)}@media (width<=768px){.hero-doctor,.hero-nurse{display:none}.hero-title{font-size:2.8rem}.hero-subtitle{font-size:2.2rem}.hero-description{font-size:1.2rem}.course-grid{grid-template-columns:1fr;max-width:400px;margin-left:auto;margin-right:auto}}.auth-page{min-height:calc(100vh - 200px);padding:var(--spacing-8) var(--spacing-4);justify-content:center;align-items:center;display:flex}.auth-card{background:var(--color-white);padding:var(--spacing-8);border-radius:var(--radius-lg);box-shadow:var(--shadow-md);width:100%;max-width:450px}.auth-title{text-align:center;color:var(--color-primary);margin-bottom:var(--spacing-6)}.auth-error{color:var(--color-primary);padding:var(--spacing-3);border-radius:var(--radius-sm);margin-bottom:var(--spacing-4);text-align:center;background:#ffe6e6;font-size:.875rem}.auth-form{gap:var(--spacing-4);flex-direction:column;display:flex}.form-group{gap:var(--spacing-1);flex-direction:column;display:flex}.form-group label{color:var(--color-text);font-size:.875rem;font-weight:500}.form-group input,.form-group select{padding:var(--spacing-3);border:1px solid var(--color-border);border-radius:var(--radius-sm);transition:border-color var(--transition-fast);width:100%;font-family:inherit;font-size:1rem}.form-group input:focus,.form-group select:focus{border-color:var(--color-primary);outline:none}.password-input-wrapper{align-items:center;display:flex;position:relative}.password-toggle-btn{right:var(--spacing-3);color:var(--color-text-light);justify-content:center;align-items:center;display:flex;position:absolute}.password-toggle-btn:hover{color:var(--color-text)}.auth-options{justify-content:space-between;align-items:center;margin-top:.25rem;font-size:.875rem;display:flex}.remember-me{align-items:center;gap:var(--spacing-2);color:var(--color-text);cursor:pointer;display:flex}.remember-me input{width:16px;height:16px;accent-color:var(--color-primary);cursor:pointer}.forgot-password-btn{color:var(--color-primary);text-underline-offset:2px;text-decoration:underline}.auth-submit-btn{margin-top:var(--spacing-4);width:100%}.auth-switch{margin-top:var(--spacing-6);text-align:center;color:var(--color-text-light);font-size:.875rem}.switch-btn{color:var(--color-primary);padding:0;font-weight:600;text-decoration:underline}.switch-btn:hover{color:var(--color-primary-hover)}@keyframes authFadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.fade-in{animation:.3s ease-out forwards authFadeIn}.course-player-container{background:var(--color-bg);min-height:calc(100vh - 70px);display:flex}.course-sidebar{background:var(--color-white);border-right:1px solid var(--color-border);flex-direction:column;width:320px;display:flex}.sidebar-title{padding:var(--spacing-6);border-bottom:1px solid var(--color-border);font-size:1.25rem}.toc-list{flex:1;overflow-y:auto}.toc-item{text-align:left;width:100%;padding:var(--spacing-4) var(--spacing-6);align-items:center;gap:var(--spacing-3);border-bottom:1px solid var(--color-border);transition:all var(--transition-fast);background:0 0;display:flex}.toc-item:hover:not(.disabled){background:#fff5f5}.toc-item.active{border-left:4px solid var(--color-primary);background:#fff0f0}.toc-item.disabled{opacity:.6;cursor:not-allowed}.toc-icon{color:var(--color-text-light)}.toc-item.active .toc-icon{color:var(--color-primary)}.toc-status{color:var(--color-text-light);margin-left:auto}.course-content-area{padding:var(--spacing-8);flex:1;overflow-y:auto}@keyframes contentCardFadeIn{0%{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}.content-card{background:var(--color-white);max-width:800px;padding:var(--spacing-8);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);margin:0 auto;animation:.35s ease-out forwards contentCardFadeIn}.alert-success{color:green;padding:var(--spacing-4);border-radius:var(--radius-md);margin-bottom:var(--spacing-4);background:#e6ffe6}.mb-4{margin-bottom:var(--spacing-4)}.mt-4{margin-top:var(--spacing-4)}.mt-6{margin-top:var(--spacing-6)}.py-10{padding-top:var(--spacing-10);padding-bottom:var(--spacing-10)}.text-center{text-align:center}.question-block{margin-bottom:var(--spacing-6)}.question-text{margin-bottom:var(--spacing-3);font-weight:500}.option-label{align-items:center;gap:var(--spacing-2);margin-bottom:var(--spacing-2);padding:var(--spacing-3);border:1px solid var(--color-border);border-radius:var(--radius-md);cursor:pointer;transition:all .2s;display:flex}.option-label:hover{background:var(--color-bg)}.video-card{padding:var(--spacing-6)}.video-container{aspect-ratio:16/9;border-radius:var(--radius-md);width:100%;margin-bottom:var(--spacing-4);background:#000;overflow:hidden}.custom-video-player{width:100%;height:100%}.video-controls{align-items:center;gap:var(--spacing-2);margin-bottom:var(--spacing-6);display:flex}.speed-label{margin-right:var(--spacing-2);font-weight:500}.speed-btn{border-radius:var(--radius-full);border:1px solid var(--color-border);background:var(--color-white);padding:4px 12px;font-size:.875rem;transition:all .2s}.speed-btn:hover{background:var(--color-bg)}.speed-btn.active{background:var(--color-primary);color:var(--color-white);border-color:var(--color-primary)}.video-footer{border-top:1px solid var(--color-border);padding-top:var(--spacing-4);justify-content:space-between;align-items:center;display:flex}.note{color:var(--color-text-light);font-size:.875rem}.result-alert{padding:var(--spacing-4);border-radius:var(--radius-md);margin-bottom:var(--spacing-6);text-align:center;font-weight:700}.result-alert.success{color:green;background:#e6ffe6}.result-alert.error{color:var(--color-primary);background:#ffe6e6}.correct-answer-box{padding:var(--spacing-3);border-radius:0 var(--radius-md) var(--radius-md) 0;margin-top:var(--spacing-2);background:#e6ffe6;border-left:4px solid green}.wrong-answer-box{border-left:4px solid var(--color-primary);padding:var(--spacing-3);border-radius:0 var(--radius-md) var(--radius-md) 0;margin-top:var(--spacing-2);color:var(--color-text-light);background:#fff5f5}.success-icon-large{color:#0c0;margin-bottom:var(--spacing-4);justify-content:center;display:flex}.success-title{color:#0c0;margin-bottom:var(--spacing-2);font-size:1.75rem}.success-desc{color:var(--color-text-light)}@media (width<=768px){.course-player-container{flex-direction:column}.course-sidebar{border-right:none;border-bottom:1px solid var(--color-border);width:100%;max-height:250px}}.app-container{flex-direction:column;min-height:100vh;display:flex}.main-content{flex:1}:root{--color-primary:#c20000;--color-primary-hover:#a30000;--color-white:#fff;--color-bg:#f8f9fa;--color-text:#1a1a1a;--color-text-light:#666;--color-border:#e0e0e0;--font-family:"Noto Sans Thai", sans-serif;--shadow-sm:0 1px 2px 0 #0000000d;--shadow-md:0 4px 6px -1px #0000001a, 0 2px 4px -1px #0000000f;--shadow-lg:0 10px 15px -3px #0000001a, 0 4px 6px -2px #0000000d;--transition-fast:.15s ease-in-out;--transition-normal:.3s ease-in-out;--spacing-1:.25rem;--spacing-2:.5rem;--spacing-3:.75rem;--spacing-4:1rem;--spacing-5:1.25rem;--spacing-6:1.5rem;--spacing-8:2rem;--spacing-10:2.5rem;--spacing-12:3rem;--spacing-16:4rem;--radius-sm:.25rem;--radius-md:.5rem;--radius-lg:1rem;--radius-full:9999px}*{box-sizing:border-box;margin:0;padding:0}:focus,input:focus,select:focus,textarea:focus{outline:none}html{scroll-behavior:smooth}html,body{font-family:var(--font-family);color:var(--color-text);background-color:var(--color-bg);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;line-height:1.6}a{color:inherit;text-decoration:none;outline:none!important}button{font-family:var(--font-family);cursor:pointer;background:0 0;border:none;outline:none!important}.container{max-width:1200px;padding:0 var(--spacing-4);margin:0 auto}.btn-primary{background-color:var(--color-primary);color:var(--color-white);padding:var(--spacing-3) var(--spacing-8);border-radius:var(--radius-full);transition:background-color var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);font-weight:500}.btn-primary:hover{background-color:var(--color-primary-hover);transform:translateY(-2px);box-shadow:0 4px 12px #c2000059}.btn-primary:active{transform:translateY(0);box-shadow:0 2px 6px #c2000040}.btn-primary:disabled{opacity:.5;pointer-events:none;cursor:not-allowed}.btn-outline{border:1px solid var(--color-text-light);color:var(--color-text-light);padding:var(--spacing-2) var(--spacing-6);border-radius:var(--radius-full);transition:all var(--transition-fast);font-weight:500}.btn-outline:hover{border-color:var(--color-text);color:var(--color-text)}h1,h2,h3,h4,h5,h6{font-weight:700;line-height:1.2}h1{font-size:2.5rem}h2{font-size:2rem}h3{font-size:1.5rem}@media (width<=768px){h1{font-size:2rem}h2{font-size:1.5rem}}@keyframes fadeSlideUp{0%{opacity:0;transform:translateY(15px)}to{opacity:1;transform:translateY(0)}}.page-transition{animation:.4s ease-out forwards fadeSlideUp}@keyframes scrollFadeIn{0%{opacity:0;transform:translateY(30px)}to{opacity:1;transform:translateY(0)}}.scroll-fade-in{opacity:0;transition:opacity .6s ease-out,transform .6s ease-out;transform:translateY(30px)}.scroll-fade-in.visible{opacity:1;transform:translateY(0)}.lang-transition{transition:opacity var(--transition-normal), transform var(--transition-normal)}.lang-transition-exit{opacity:0;transform:translateY(-4px)}.lang-transition-enter{opacity:1;transform:translateY(0)}