:root{--primary-color:#10b981;--primary-light:#d1fae5;--primary-dark:#059669;--text-main:oklch(21% .034 264.665);--text-muted:#6b7280;--bg-main:#fff;--bg-gray:#f9fafb;--border-color:#e5e7eb;--shadow-sm:0 1px 2px 0 #0000000d;--shadow-primary:0 4px 14px 0 #10b98163}*{box-sizing:border-box;margin:0;padding:0}body{background-color:var(--bg-main);color:var(--text-main);justify-content:center;align-items:center;height:100dvh;font-family:ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;transition:background-color .3s;display:flex;overflow:hidden}body.in-room{background-color:var(--bg-gray);background-image:radial-gradient(var(--border-color) 1px, transparent 1px);background-size:20px 20px}#app{background-color:#fff;width:100%;max-width:600px;height:100dvh;position:relative}.view{opacity:0;pointer-events:none;flex-direction:column;width:100%;height:100%;transition:opacity .3s;display:flex;position:absolute;top:0;left:0}.view.active{opacity:1;pointer-events:all;z-index:10}#landing-view{justify-content:center;align-items:center;padding:2rem}.logo-container{text-align:center;margin-bottom:2.5rem}.logo{width:80px;height:80px;margin-bottom:1rem}h1{margin-bottom:.5rem;font-size:30px;font-weight:700}.logo-container p{color:var(--text-muted);font-size:1rem}.actions{flex-direction:column;gap:1.5rem;width:100%;max-width:320px;display:flex}.btn{cursor:pointer;border:none;border-radius:9999px;justify-content:center;align-items:center;gap:.5rem;padding:1rem 1.5rem;font-size:1rem;font-weight:500;transition:all .2s;display:flex}.btn-primary{background-color:var(--primary-color);color:#fff;box-shadow:var(--shadow-primary)}.btn-primary:hover{background-color:var(--primary-dark);transform:translateY(-1px)}.join-section{border-top:1px solid var(--border-color);flex-direction:column;gap:.75rem;margin-top:1rem;padding-top:1.5rem;display:flex}#join-code-input{border:1px solid var(--border-color);background-color:var(--bg-gray);text-align:center;letter-spacing:.2em;text-transform:uppercase;border-radius:9999px;outline:none;padding:1rem 1.5rem;font-size:1.25rem;transition:all .2s}#join-code-input:focus{border-color:var(--primary-color);box-shadow:0 0 0 3px var(--primary-light);background-color:#fff}.btn-secondary{color:var(--primary-color);border:1px solid var(--primary-light);background-color:#fff}.btn-secondary:hover{background-color:var(--primary-light)}.landing-footer{justify-content:center;gap:1.25rem;width:100%;display:flex;position:absolute;bottom:2rem;left:0}.landing-footer a{color:var(--text-muted);font-size:.85rem;text-decoration:none;transition:color .2s}.landing-footer a:hover{color:var(--primary-dark)}.features-list{color:var(--text-muted);justify-content:center;align-items:center;gap:.75rem;margin-top:1.5rem;font-size:.85rem;font-weight:500;display:flex}.feature-dot{color:var(--primary-light);font-size:1.25rem}.article-page{max-height:100vh;padding:3rem 2rem;overflow-y:auto}.article-page h1{margin-bottom:1rem;font-size:2rem}.article-page h2{margin-top:2rem;margin-bottom:.75rem;font-size:1.25rem}.article-page p,.article-page li{color:var(--text-muted);margin-bottom:1rem;line-height:1.6}.back-link{color:var(--primary-color);align-items:center;gap:.5rem;margin-bottom:2rem;font-weight:500;text-decoration:none;display:inline-flex}.back-link:hover{color:var(--primary-dark)}body.subpage-body{background-color:#fff;align-items:flex-start;height:auto;overflow:auto}body.subpage-body #app{height:auto;min-height:100vh;box-shadow:none}body.subpage-body .article-page{max-height:none;overflow-y:visible}#room-view{background-color:var(--bg-gray);background-image:radial-gradient(var(--border-color) 1px, transparent 1px);background-size:20px 20px}.top-bar{-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);z-index:20;background-color:#fffffff2;border-radius:9999px;justify-content:space-between;align-items:center;margin:1rem;padding:.75rem 1.25rem;display:flex;box-shadow:0 4px 20px #0000000d}.room-info{text-align:center}.room-code-display{letter-spacing:.1em;color:var(--primary-dark);font-size:1.5rem;font-weight:800}.peer-count{color:var(--text-muted);margin-top:.2rem;font-size:.75rem;font-weight:500}.btn-icon{cursor:pointer;color:var(--text-main);background:0 0;border:none;border-radius:50%;justify-content:center;align-items:center;width:40px;height:40px;transition:background-color .2s;display:flex}.btn-icon:hover{background-color:var(--bg-gray)}.btn-icon.primary{color:var(--primary-color)}.btn-icon.solid{background-color:var(--primary-color);color:#fff}.btn-icon.solid:hover{background-color:var(--primary-dark)}.btn-icon.solid:disabled{background-color:var(--bg-gray);color:var(--text-muted);cursor:not-allowed}.messages-container{background:0 0;flex-direction:column;flex-grow:1;gap:1rem;min-height:0;padding:0 1.5rem 1.5rem;display:flex;overflow-y:auto}.empty-state{text-align:center;color:var(--text-muted);margin:auto;font-style:italic}.bottom-bar{padding:0 1rem 1rem;padding-bottom:calc(1rem + env(safe-area-inset-bottom));background:0 0}.input-container{background-color:#fff;border:none;border-radius:9999px;align-items:center;gap:.5rem;padding:.5rem;display:flex;box-shadow:0 4px 20px #0000000d}.text-input{background:0 0;border:none;outline:none;flex-grow:1;min-width:0;padding:.5rem;font-size:.95rem}.file-attachment{background-color:var(--primary-light);color:var(--primary-dark);white-space:nowrap;border-radius:9999px;align-items:center;gap:.5rem;padding:.25rem .5rem .25rem .75rem;font-size:.8rem;display:flex}.file-attachment.hidden{display:none}.file-attachment button{width:20px;height:20px;color:inherit;background:0 0;font-size:1rem}.text-message{box-shadow:var(--shadow-sm);border:1px solid var(--border-color);background:#fff;border-radius:12px;align-self:flex-start;max-width:80%;padding:.75rem 1rem}.text-message.sent{background:var(--primary-light);border-color:var(--primary-light);align-self:flex-end}.upload-status{color:var(--text-muted);white-space:nowrap;text-overflow:ellipsis;flex-grow:1;font-size:.875rem;overflow:hidden}.file-message{box-shadow:var(--shadow-sm);border:1px solid var(--border-color);background:#fff;border-radius:12px;align-items:center;gap:1rem;padding:1rem;display:flex}.file-info{flex-grow:1;overflow:hidden}.file-name{white-space:nowrap;text-overflow:ellipsis;margin-bottom:.25rem;font-weight:500;overflow:hidden}.file-meta{color:var(--text-muted);font-size:.75rem}.file-action{color:var(--primary-color);cursor:pointer;font-weight:500;text-decoration:none}.toast{background-color:var(--text-main);color:#fff;z-index:100;border-radius:9999px;padding:.75rem 1.5rem;font-size:.875rem;transition:opacity .3s,transform .3s;position:fixed;top:1rem;left:50%;transform:translate(-50%)}.toast.hidden{opacity:0;pointer-events:none;transform:translate(-50%,-10px)}.modal{z-index:1000;opacity:1;background:#0006;justify-content:center;align-items:center;width:100%;height:100%;transition:opacity .2s;display:flex;position:fixed;top:0;left:0}.modal.hidden{opacity:0;pointer-events:none}.modal-content{background:#fff;border-radius:16px;width:90%;max-width:380px;transition:transform .2s;overflow:hidden;transform:translateY(0);box-shadow:0 10px 25px #0000001a}.modal.hidden .modal-content{transform:translateY(20px)}.modal-header{border-bottom:1px solid var(--border-color);justify-content:space-between;align-items:center;padding:1.25rem 1.5rem;display:flex}.modal-header h3{font-size:1.1rem;font-weight:600}.modal-body{text-align:center;padding:1.5rem}.share-text{color:var(--text-muted);margin-bottom:1rem;font-size:.9rem}.qr-container{border:1px solid var(--border-color);background:#fff;border-radius:12px;justify-content:center;margin-bottom:1.5rem;padding:1rem;display:flex}.share-link-box{gap:.5rem;display:flex}#share-link-input{border:1px solid var(--border-color);background:var(--bg-gray);color:var(--text-muted);border-radius:8px;outline:none;flex-grow:1;padding:.5rem .75rem;font-size:.85rem}.small-btn{background-color:var(--primary-color);color:#fff;cursor:pointer;border:none;border-radius:8px;padding:.5rem 1rem;font-size:.85rem}