:root{--primary: #ff4757;--bg: #0f172a;--card-bg: rgba(30, 41, 59, .7);--text: #f8fafc;--text-muted: #94a3b8;--border: rgba(255, 255, 255, .1);--success: #22c55e}*{margin:0;padding:0;box-sizing:border-box;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif}body{background:var(--bg);background:radial-gradient(circle at top right,#1e293b,#0f172a);color:var(--text);min-height:100vh;overflow:hidden}.app-container{display:flex;flex-direction:column;height:100vh;padding:20px;gap:20px}.header{display:flex;justify-content:space-between;align-items:center;padding:10px 0}.logo{font-size:1.5rem;font-weight:800;color:var(--primary);display:flex;align-items:center;gap:8px}.main-content{flex:1;display:grid;grid-template-columns:1fr 350px;gap:20px;min-height:0}@media(max-width:900px){.main-content{grid-template-columns:1fr}.chat-panel{display:none}}.video-grid{display:grid;grid-template-rows:1fr 1fr;gap:20px;position:relative;min-height:0}.video-wrapper{background:var(--card-bg);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border:1px solid var(--border);border-radius:20px;overflow:hidden;position:relative;display:flex;justify-content:center;align-items:center}.video-element{width:100%;height:100%;object-fit:cover;transform:scaleX(-1)}.remote-video.video-element{transform:scaleX(1)}.video-label{position:absolute;top:15px;left:15px;background:#00000080;padding:5px 12px;border-radius:10px;font-size:.8rem;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);z-index:5}.controls-panel{display:flex;justify-content:center;align-items:center;gap:20px;padding:20px}.btn{padding:12px 24px;border-radius:12px;border:none;font-weight:600;cursor:pointer;transition:all .2s;display:flex;align-items:center;gap:8px}.btn-primary{background:var(--primary);color:#fff}.btn-primary:hover{filter:brightness(1.1);transform:translateY(-2px)}.btn-secondary{background:var(--card-bg);color:#fff;border:1px solid var(--border)}.btn-secondary.active{background:var(--primary);border-color:var(--primary)}.chat-panel{background:var(--card-bg);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border:1px solid var(--border);border-radius:20px;display:flex;flex-direction:column;min-height:0}.chat-header{padding:15px;border-bottom:1px solid var(--border)}.chat-messages{flex:1;padding:15px;overflow-y:auto;display:flex;flex-direction:column;gap:10px}.message{padding:10px 15px;border-radius:15px;max-width:80%;font-size:.9rem;word-wrap:break-word}.message.received{background:var(--border);align-self:flex-start}.message.sent{background:var(--primary);align-self:flex-end}.chat-input-area{padding:15px;display:flex;gap:10px}.chat-input{flex:1;background:#0003;border:1px solid var(--border);border-radius:10px;padding:10px;color:#fff;outline:none}.status-badge{padding:4px 10px;border-radius:20px;font-size:.75rem;background:var(--border)}.status-オンライン{color:var(--success)}:root{font-family:Inter,system-ui,Avenir,Helvetica,Arial,sans-serif;line-height:1.5;font-weight:400;color-scheme:light dark;color:#ffffffde;background-color:#242424;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}a{font-weight:500;color:#646cff;text-decoration:inherit}a:hover{color:#535bf2}body{margin:0;display:flex;place-items:center;min-width:320px;min-height:100vh}h1{font-size:3.2em;line-height:1.1}button{border-radius:8px;border:1px solid transparent;padding:.6em 1.2em;font-size:1em;font-weight:500;font-family:inherit;background-color:#1a1a1a;cursor:pointer;transition:border-color .25s}button:hover{border-color:#646cff}button:focus,button:focus-visible{outline:4px auto -webkit-focus-ring-color}@media(prefers-color-scheme:light){:root{color:#213547;background-color:#fff}a:hover{color:#747bff}button{background-color:#f9f9f9}}