:root{font-family:system-ui,-apple-system,Segoe UI,sans-serif;line-height:1.5;font-weight:400;color:#1a2233;background-color:#fff;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}*{box-sizing:border-box}body{margin:0;min-width:320px;min-height:100vh;background:#fff;color:#1a2233}a{font-weight:600;color:#e53935;text-decoration:none}a:hover{color:#b71c1c}button,input,textarea,select{font-family:inherit}html,body,#root,.homepage-root{width:100vw;min-height:100vh;margin:0;padding:0;background:#fff;box-sizing:border-box;overflow-x:hidden}.nav-bar{display:flex;align-items:center;justify-content:space-between;max-width:1100px;margin:0 auto;padding:0 2rem}.logo{font-size:1.5rem;font-weight:700;color:#fff;letter-spacing:2px}.nav-links{list-style:none;display:flex;gap:2rem;margin:0;padding:0}.nav-links li a{color:#fff;text-decoration:none;font-weight:500;transition:color .2s}.nav-links li a:hover{color:#e53935}.main-content{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:4rem 1rem;text-align:center}.main-content h1{font-size:2.5rem;font-weight:700;color:#1a2233;margin-bottom:2rem}.homepage-header{background:#000;padding:1rem 0;box-shadow:0 2px 8px #00000008}.mode-switch{display:inline-flex;gap:1.2rem;margin:3rem 0 2rem;background:#f5f5f5;border-radius:2rem;box-shadow:0 2px 12px #0000000a;padding:.3rem;align-items:center;min-height:0;max-width:420px;min-width:0}.mode-btn{background:none;border:none;outline:none;font-size:1.05rem;font-weight:600;color:#000;padding:.7rem 2.2rem;border-radius:1.5rem;cursor:pointer;transition:background .2s,color .2s,box-shadow .2s;position:relative;display:flex;align-items:center;gap:.4em;min-height:0;margin:0;box-sizing:border-box}.mode-btn.active{background:#e53935;color:#fff;box-shadow:0 2px 8px #e539351f;border-radius:1.5rem}.mode-btn:not(.active):hover{background:#fce4e4;color:#e53935}.mode-content{width:100%;margin:0 auto;display:flex;flex-direction:column;align-items:center;justify-content:flex-start}.mode-panel{width:100%;background:#fff;border-radius:1.5rem;box-shadow:0 4px 24px #00000012;padding:2.5rem 2rem 2rem;margin-bottom:2rem;text-align:center;transition:box-shadow .2s}.transmit-panel h1,.receive-panel h1{font-size:2rem;font-weight:700;margin-bottom:1rem;color:#e53935}.mode-desc{color:#333;font-size:1.1rem;margin-bottom:0}.transmit-ui,.receive-ui{width:100%;background:#fff;border-radius:1.5rem;box-shadow:0 4px 24px #00000012;padding:2.5rem 2rem 1rem;margin-bottom:0;text-align:center;transition:box-shadow .2s;display:flex;flex-direction:column;align-items:center}.transmit-letter{font-size:3.5rem;font-weight:800;color:#e53935;margin-bottom:1.5rem;letter-spacing:2px}.transmit-morse-display{min-height:2.5rem;font-size:2rem;letter-spacing:.5rem;color:#222;margin-bottom:1.5rem;background:#f5f5f5;border-radius:.75rem;padding:.5rem 1.5rem;display:inline-block}.placeholder{color:#bbb;font-size:1.1rem}.transmit-controls{display:flex;gap:1rem;margin-bottom:1.5rem;justify-content:center}.morse-key-btn{background:#e53935;color:#fff;font-size:1.25rem;font-weight:700;border:none;border-radius:2rem;padding:1rem 2.5rem;cursor:pointer;transition:background .2s,box-shadow .2s;box-shadow:0 2px 8px #e539351a}.morse-key-btn.pressing{background:#b71c1c}.backspace-btn,.submit-btn,.next-btn,.play-btn{background:#fff;color:#e53935;border:2px solid #e53935;border-radius:2rem;font-size:1.1rem;font-weight:600;padding:.75rem 1.5rem;cursor:pointer;transition:background .2s,color .2s}.backspace-btn:disabled,.submit-btn:disabled{opacity:.5;cursor:not-allowed}.submit-btn,.next-btn{margin-left:.5rem}.backspace-btn:hover,.submit-btn:hover,.next-btn:hover,.play-btn:hover{background:#e53935;color:#fff}.transmit-feedback,.receive-feedback{margin-top:1.5rem;font-size:1.2rem;font-weight:600;padding:1rem 1.5rem;border-radius:1rem;display:flex;flex-direction:column;align-items:center}.transmit-feedback.correct,.receive-feedback.correct{background:#e8f5e9;color:#388e3c;border:1.5px solid #388e3c}.transmit-feedback.incorrect,.receive-feedback.incorrect{background:#ffebee;color:#e53935;border:1.5px solid #e53935}.play-btn{margin-bottom:1.5rem}.receive-form{display:flex;gap:1rem;justify-content:center;margin-bottom:1.5rem}.receive-input{font-size:2rem;font-weight:700;width:4rem;text-align:center;border:2px solid #e53935;border-radius:.75rem;padding:.5rem;outline:none;color:#e53935;background:#fff;transition:border .2s}.receive-input:focus{border:2px solid #b71c1c}.keyboard-grid{display:grid;grid-template-columns:repeat(10,2.5rem);gap:.5rem;justify-content:center;margin:1.5rem 0}.keyboard-key{background:#fff;color:#e53935;border:2px solid #e53935;border-radius:.75rem;font-size:1.15rem;font-weight:700;padding:.75rem 0;cursor:pointer;transition:background .2s,color .2s;outline:none}.keyboard-key:hover:not(:disabled),.keyboard-key:focus:not(:disabled){background:#e53935;color:#fff}.keyboard-key:disabled{opacity:.5;cursor:not-allowed}.receive-status{display:flex;justify-content:center;align-items:center;margin-bottom:1.25rem;min-height:2.5rem}.receive-question{font-size:2.5rem;color:#e53935;font-weight:800}.receive-feedback-text{font-size:1.5rem;font-weight:700}.receive-feedback-text.correct{color:#388e3c}.receive-feedback-text.incorrect{color:#e53935}.main-content-home{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:4rem 1rem;text-align:center}.main-content-home h1{font-size:2.5rem;font-weight:700;color:#1a2233;margin-bottom:2rem}.get-started-btn{background:#e53935;color:#fff;font-size:1.25rem;padding:.75rem 2.5rem;border:none;border-radius:.5rem;cursor:pointer;font-weight:600;transition:background .2s,color .2s;box-shadow:0 2px 8px #e5393514}.get-started-btn:hover{background:#b71c1c;color:#fff}.core-app-layout{display:flex;flex-direction:row;min-height:calc(100vh - 56px);background:#f9fafb}.main-interface{flex:1;width:0;min-width:0;display:flex;flex-direction:column;align-items:center;justify-content:flex-start;background:#fff;padding:0}.transmit-tip{display:inline-block;background:#fff;color:#333;padding:.18em .5em;border-radius:5px;font-size:.48em;font-weight:400;box-shadow:0 1px 2px #0000000a;margin-top:.2em;margin-bottom:.2em;letter-spacing:.05px}.kbd{display:inline-block;background:#f5f5f5;color:#333;border:1px solid #bbb;border-radius:3px;padding:.05em .3em;font-size:1em;font-family:inherit;font-weight:500;margin:0 .12em;box-shadow:0 1px 1px #0000000a;vertical-align:middle}.morse-key-btn,.backspace-btn,.submit-btn,.next-btn,.play-btn{padding:1.1rem 2.7rem}.settings-icon{margin-left:1.2rem;cursor:pointer;display:flex;align-items:center;color:#e53935;transition:color .2s}.settings-icon:hover,.settings-icon:focus{color:#b71c1c}.settings-modal-overlay{position:fixed;inset:0;background:#0000002e;z-index:1000;display:flex;align-items:center;justify-content:center}.settings-modal{background:#fff;border-radius:1.2rem;box-shadow:0 4px 32px #00000021;padding:2.2rem 2.5rem 1.5rem;min-width:320px;max-width:95vw;position:relative}.settings-modal h2{margin-top:0;margin-bottom:1.2rem;font-size:1.5rem;color:#e53935}.settings-row{margin-bottom:1.5rem;display:flex;flex-direction:column;gap:.7rem}.close-settings-btn{background:#e53935;color:#fff;border:none;border-radius:2rem;font-size:1.1rem;font-weight:600;padding:.7rem 2.2rem;cursor:pointer;transition:background .2s;margin-top:.5rem}.close-settings-btn:hover{background:#b71c1c}.nav-actions{display:flex;align-items:center;gap:1.2rem}.settings-page{max-width:420px;margin:3rem auto 0;background:#fff;border-radius:1.2rem;box-shadow:0 4px 32px #00000021;padding:2.2rem 2.5rem 1.5rem;display:flex;flex-direction:column;align-items:center}.settings-page h2{margin-top:0;margin-bottom:1.2rem;font-size:1.5rem;color:#e53935}.settings-row{margin-bottom:1.5rem;display:flex;flex-direction:column;gap:.7rem;width:100%}.settings-row label{font-size:1.1rem;font-weight:500;color:#333}.settings-row input[type=range]{width:100%;accent-color:#e53935;margin-top:.3rem}.back-btn{background:#e53935;color:#fff;border:none;border-radius:2rem;font-size:1.1rem;font-weight:600;padding:.7rem 2.2rem;cursor:pointer;transition:background .2s;margin-top:.5rem}.back-btn:hover{background:#b71c1c}.switch{position:relative;display:inline-block;width:64px;height:24px}.switch input{opacity:0;width:0;height:0}.slider{position:absolute;cursor:pointer;inset:0;background:#ccc;transition:background .3s;border-radius:24px}.slider:before{position:absolute;content:"";height:24px;width:24px;left:0;top:0;background:#fff;transition:transform .3s;border-radius:50%;box-shadow:0 1px 4px #0000001a}.switch input:checked+.slider{background:#43a047}.switch input:checked+.slider:before{transform:translate(24px)}.switch input:focus+.slider{box-shadow:0 0 1px #43a047}.switch input:active+.slider:before{width:30px}.settings-row label,.settings-row span{color:#111}.settings-danger-card{border:1px solid #f1c0c0;background:#fff5f5;border-radius:.8rem;padding:.9rem;display:grid;gap:.5rem}.settings-danger-title{font-weight:700;color:#b71c1c}.settings-danger-text{color:#5f2b2b;font-size:.95rem}.settings-danger-btn{justify-self:start;border:none;background:#e53935;color:#fff;border-radius:.6rem;padding:.5rem 1rem;font-weight:600;cursor:pointer}.settings-danger-btn:disabled{background:#d9a3a3;cursor:not-allowed}.modal-backdrop{position:fixed;inset:0;background:#00000059;z-index:1000;display:flex;align-items:center;justify-content:center}.modal{background:#fff;color:#222;border-radius:16px;padding:2.5rem 2rem 2rem;box-shadow:0 8px 32px #0000002e;max-width:400px;width:90vw;text-align:center;z-index:1001}.modal h2{margin-top:0;font-size:1.5rem;font-weight:700}.modal p{margin:1.2em 0;font-size:1.1rem}.modal-close-btn{margin-top:1.5em;padding:.7em 2em;background:#2563eb;color:#fff;border:none;border-radius:8px;font-size:1rem;font-weight:500;cursor:pointer;transition:background .2s}.modal-close-btn:hover{background:#1741a6}.course-page{max-width:900px;margin:2.5rem auto 3rem;padding:0 1.5rem}.course-page h1{font-size:2.2rem;color:#1a2233;margin-bottom:1.5rem}.course-card{background:#fff;border-radius:1.2rem;box-shadow:0 4px 24px #00000014;padding:2rem;margin-bottom:2rem}.course-meta{display:flex;flex-wrap:wrap;gap:1.5rem;margin-bottom:1.5rem;color:#333}.course-controls{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:1rem;margin-bottom:1.5rem}.course-control{background:#f7f7f7;border:1px solid #e0e0e0;border-radius:.9rem;padding:.85rem .95rem;display:grid;gap:.6rem}.course-control label{font-weight:600;color:#1a2233}.course-touch-keys{display:grid;gap:.6rem;margin-bottom:1.2rem}.course-touch-label{font-weight:600;color:#1a2233}.course-touch-paddles{display:grid;grid-template-columns:repeat(2,minmax(120px,1fr));gap:.75rem}.course-touch-key{border:2px solid #1a2233;background:#fff;color:#1a2233;border-radius:.8rem;padding:1rem 1.2rem;font-weight:700;text-transform:uppercase;letter-spacing:.08em;cursor:pointer;-webkit-user-select:none;user-select:none;touch-action:none}.course-touch-key.straight{width:100%}.course-touch-key:active{background:#e53935;color:#fff;border-color:#e53935}.course-controls input[type=range]{width:100%;accent-color:#e53935}.course-actions{display:flex;flex-direction:column;gap:.6rem;align-items:flex-start;margin-bottom:1.5rem}.course-action-buttons{display:flex;flex-wrap:wrap;gap:.75rem;align-items:center}.course-action-indicators{display:flex;align-items:center;gap:1rem}.course-actions button{background:#e53935;color:#fff;border:none;border-radius:.6rem;padding:.7rem 1.4rem;font-weight:600;cursor:pointer}.course-actions button:disabled{background:#ccc;cursor:not-allowed}.course-timer{font-weight:600;color:#333;display:flex;align-items:center}.course-timer-pie{width:84px;height:84px;border-radius:50%;background:conic-gradient(#e53935 calc(var(--progress) * 1turn),#f0f0f0 0);display:inline-flex;align-items:center;justify-content:center;position:relative;box-shadow:inset 0 0 0 6px #fff,0 2px 8px #00000014}.course-timer-pie-label{font-size:.95rem;font-weight:700;color:#222}.course-step-pie{width:64px;height:64px;box-shadow:inset 0 0 0 4px #fff,0 2px 8px #00000014}.course-prompt-line{display:flex;align-items:baseline;gap:.5rem}.course-prompt-inline{display:flex;align-items:center;gap:.5rem}.course-prompt-label{font-weight:700;color:#1a2233}.course-prompt-text{font-size:3.6rem;font-weight:800;letter-spacing:.04em;color:#1a2233;line-height:1}.course-input{display:grid;gap:.5rem}.course-input textarea{width:100%;border:1px solid #ddd;border-radius:.6rem;padding:.8rem;font-size:1rem;font-family:inherit;resize:vertical}.course-results{background:#fff;border-radius:1.2rem;box-shadow:0 4px 24px #00000014;padding:1.5rem 2rem}.course-results h2{margin-top:0;color:#1a2233}.course-results-empty{color:#777}.course-lesson-header{display:flex;justify-content:flex-start;margin-bottom:.75rem}.course-back-btn{background:transparent;border:none;color:#e53935;font-weight:600;cursor:pointer;padding:0}.course-lesson-list{display:grid;gap:.8rem}.course-step-layout{display:grid;gap:1rem}.course-step-columns{display:grid;grid-template-columns:minmax(220px,1fr) 2fr;gap:1rem;align-items:start}.course-step-panel{background:#f7f7f7;border:1px solid #e0e0e0;border-radius:1rem;padding:.75rem;height:fit-content}.course-step-panel-title{margin:0 0 .5rem;font-size:1rem;color:#1a2233}.course-step-list{display:grid;gap:.5rem;position:relative}.course-step-item:last-child .course-step-connector{min-height:0}.course-step-item:last-child .course-step-marker:before{bottom:6px}.course-step-item{display:grid;grid-template-columns:28px 1fr;gap:.75rem;align-items:start;width:100%;padding:0;border:0;background:transparent;text-align:left;cursor:pointer;color:inherit;font:inherit}.course-step-item:focus{outline:none}.course-step-item:focus-visible{outline:2px solid #e0e0e0;outline-offset:4px;border-radius:.75rem}.course-step-marker{display:grid;justify-items:center;position:relative;grid-template-rows:14px 1fr}.course-step-marker:before{content:"";position:absolute;left:50%;top:16px;bottom:-20px;width:3px;transform:translate(-50%);background:#e0e0e0;z-index:0}.course-step-marker.complete:before{background:#e53935}.course-step-marker.current:before{background:#e0e0e0}.course-step-dot{width:14px;height:14px;border-radius:50%;border:2px solid #e0e0e0;background:#fff;margin-top:.1rem;position:relative;z-index:1}.course-step-marker.complete .course-step-dot{border-color:#e53935;background:#e53935}.course-step-marker.current .course-step-dot{border-color:#e0e0e0;background:#e0e0e0}.course-step-connector{width:3px;flex:1;background:#e0e0e0;margin-top:6px;min-height:40px}.course-step-connector.complete{background:#e53935}.course-step-connector.current{background:#e0e0e0}.course-step-content{display:grid;gap:.2rem}.course-step-title{font-weight:700;color:#1a2233}.course-step-status{font-size:.85rem;color:#666}.course-step-main{display:grid;gap:.75rem;align-self:start}.course-module-grid{display:grid;gap:1rem}.course-module-card{display:grid;gap:.75rem;text-align:left;background:#fff;border:1px solid #e0e0e0;border-radius:1rem;padding:1.25rem;cursor:pointer;box-shadow:0 4px 16px #0000000f}.course-module-title{font-size:1.1rem;font-weight:700;color:#1a2233}.course-module-progress{display:flex;align-items:center;gap:1rem}.course-module-pie{width:64px;height:64px;box-shadow:inset 0 0 0 5px #fff,0 2px 8px #0000000f}.course-module-progress-text{color:#555;font-weight:600}.course-lesson-item{display:grid;gap:.25rem;text-align:left;background:#f7f7f7;border:1px solid #e0e0e0;border-radius:.8rem;padding:1rem;cursor:pointer}.course-lesson-item:disabled,.course-lesson-item.locked{cursor:not-allowed;opacity:.55}.course-lesson-row{display:flex;align-items:center;justify-content:space-between;gap:1rem}.course-lesson-main{display:grid;gap:.25rem}.course-lesson-progress{flex:0 0 auto}.course-lesson-pie{width:56px;height:56px;box-shadow:inset 0 0 0 4px #fff,0 2px 8px #00000014}.course-lesson-pie .course-timer-pie-label{font-size:.8rem;font-weight:700}.course-lesson-title{font-size:1.05rem;font-weight:700;color:#1a2233}.course-lesson-desc{color:#555}.course-lesson-status{font-size:.9rem;font-weight:600;margin-top:.25rem}.course-lesson-status.complete{color:#2e7d32}.course-lesson-status.incomplete{color:#666}.course-toggle-row{display:grid;gap:.5rem;margin-bottom:1rem}.course-toggle{display:flex;align-items:center;gap:.5rem;font-weight:600;color:#333}.course-toggle input[type=checkbox]{width:18px;height:18px;accent-color:#e53935;border-radius:4px}.course-toggle:hover{color:#1a2233}.course-toggle input[type=checkbox]:focus-visible{outline:2px solid rgba(229,57,53,.4);outline-offset:2px}.course-warning{color:#b71c1c;font-weight:600;margin-bottom:1rem}.course-results-card{margin-top:.5rem;padding:1rem 1.2rem;border-radius:.8rem;border:1px solid #e0e0e0;background:#f7f7f7;display:grid;gap:.4rem}.course-results-card.passed{border-color:#43a047;background:#e8f5e9}.course-results-card.failed{border-color:#e53935;background:#ffebee}.main-app-content{position:relative}.help-icon{position:absolute;top:18px;right:18px;z-index:10;background:#fff;border:none;border-radius:50%;box-shadow:0 2px 8px #0000001a;width:44px;height:44px;display:flex;align-items:center;justify-content:center;cursor:pointer;transition:box-shadow .2s,background .2s}.help-icon:hover,.help-icon:focus{background:#f0f4ff;box-shadow:0 4px 16px #2563eb1a;outline:none}.help-icon svg{display:block}@media(max-width:900px){.main-content,.main-content-home{padding:2rem .5rem}.nav-bar{padding:0 1rem}.nav-links{gap:1rem}.mode-panel,.transmit-ui,.receive-ui{padding:1.5rem 1rem 1rem;margin-bottom:1.2rem}.transmit-letter,.receive-question{font-size:2.2rem}.keyboard-grid{grid-template-columns:repeat(7,2.2rem);gap:.35rem}.mode-switch{gap:1rem;margin:2rem 0 1.2rem;padding:.2rem}.mode-btn{font-size:.98rem;padding:.6rem 1.2rem}.morse-key-btn,.backspace-btn,.submit-btn,.next-btn,.play-btn{padding:.85rem 1.7rem}.mode-content{max-width:100vw;padding:0 .5rem}.receive-ui{max-width:100vw;padding:1.5rem 1rem 1rem;margin-bottom:1.2rem}.course-page{margin:2rem auto;padding:0 1rem}.course-step-columns{grid-template-columns:1fr}.course-step-panel{order:2}.course-step-main{order:1}.course-lesson-row{flex-direction:column;align-items:flex-start}.course-lesson-progress{align-self:flex-end}.course-module-progress{flex-direction:column;align-items:flex-start}.course-action-indicators{flex-wrap:wrap}.course-prompt-text{font-size:2.6rem}}@media(max-width:600px){.main-content,.main-content-home{padding:1rem .2rem}.nav-bar{flex-direction:column;gap:.75rem;padding:.75rem 1rem 1rem}.nav-links{flex-wrap:wrap;justify-content:center;gap:.75rem}.mode-panel,.transmit-ui,.receive-ui{padding:1rem .2rem .7rem;margin-bottom:.7rem;border-radius:.7rem;box-shadow:0 2px 8px #0000000a}.transmit-letter,.receive-question{font-size:1.5rem;margin-bottom:1rem}.transmit-morse-display{font-size:1.1rem;padding:.3rem .7rem;margin-bottom:1rem}.transmit-controls{flex-direction:column;gap:.5rem;margin-bottom:1rem}.morse-key-btn,.backspace-btn,.submit-btn,.next-btn,.play-btn{font-size:1rem;padding:.7rem 1.2rem;min-width:0;padding:.7rem 1.3rem}.keyboard-grid{grid-template-columns:repeat(5,2rem);gap:.25rem;overflow-x:auto;justify-content:flex-start}.keyboard-key{font-size:.95rem;padding:.5rem 0;min-width:1.7rem}.receive-input{font-size:1.2rem;width:2.5rem;padding:.3rem}.transmit-feedback,.receive-feedback{font-size:1rem;padding:.7rem;margin-top:1rem;border-radius:.6rem}.mode-switch{gap:.5rem;margin:1.2rem 0 .7rem;padding:.12rem}.mode-btn{font-size:.92rem;padding:.5rem .7rem}.morse-key-btn,.backspace-btn,.submit-btn,.next-btn,.play-btn{padding:.7rem 1.3rem}.mode-content{max-width:100vw;padding:0 .2rem}.receive-ui{max-width:100vw;padding:1rem .2rem .7rem;margin-bottom:.7rem;border-radius:.7rem;box-shadow:0 2px 8px #0000000a}.course-card{padding:1.25rem}.course-actions{align-items:stretch}.course-action-buttons{flex-direction:column;align-items:stretch}.course-actions button{width:100%}.course-timer-pie{width:72px;height:72px}.course-step-pie{width:56px;height:56px}.course-prompt-text{font-size:2.2rem}.course-module-card,.course-lesson-item{padding:.9rem}}.sbui-modal-close,.sbui-modal__close,.supabase-auth-ui .sbui-btn-container,button[aria-label=Close]{color:#2563eb!important;background:transparent!important;font-size:1.7rem;font-weight:700;border:none;cursor:pointer;z-index:1002}.sbui-modal-close:hover,.sbui-modal__close:hover,.supabase-auth-ui .sbui-btn-container:hover,button[aria-label=Close]:hover{color:#1741a6!important;background:#f0f4ff!important}button[style*="position: absolute"][style*="right: 8px"][style*="top: 8px"]{color:#2563eb!important;background:none!important;border:none!important;font-size:1.7rem!important;font-weight:700;cursor:pointer;z-index:1002}button[style*="position: absolute"][style*="right: 8px"][style*="top: 8px"]:hover,button[style*="position: absolute"][style*="right: 8px"][style*="top: 8px"]:focus{color:#1741a6!important;background:#f0f4ff!important}
