/* realtime-openai.css — OpenAI Realtimeページ スタイル Part 1: テーマ・レイアウト・マイク */

:root {
  --bg: #0f0f23; --card: #1a1a2e; --card2: #16213e; --border: #2a2d4e;
  --openai: #10a37f; --openai-dim: rgba(16,163,127,0.15); --openai-border: rgba(16,163,127,0.4);
  --blue: #3b82f6; --blue-dim: rgba(59,130,246,0.15); --blue-border: rgba(59,130,246,0.4);
  --green: #22c55e; --red: #ef4444;
}
html, body { height: 100%; }
.header { background: linear-gradient(135deg,#1a1a2e 0%,#16213e 100%); justify-content: flex-start; gap: 12px; height: 60px; padding: 0 20px; }
.header h1 { font-size: 17px; font-weight: 700; color: var(--text); }
.header-accent { color: var(--openai); }
.tab-nav { display: flex; gap: 0; border-bottom: 2px solid var(--border); overflow-x: auto; -webkit-overflow-scrolling: touch; scrollbar-width: none; background: var(--card); }
.tab-nav::-webkit-scrollbar { display: none; }
.tab-link { padding: 11px 18px; text-decoration: none; color: var(--text-muted); font-size: 13px; font-weight: 600; border-bottom: 2px solid transparent; margin-bottom: -2px; transition: color 0.2s, border-color 0.2s; white-space: nowrap; flex-shrink: 0; display: flex; align-items: center; gap: 6px; min-height: 44px; }
.tab-link:hover { color: var(--text); }
.tab-link.active { color: var(--openai); border-bottom-color: var(--openai); }
.main { padding: 20px 16px; max-width: 640px; margin: 0 auto; display: flex; flex-direction: column; gap: 16px; }
.mic-area { display: flex; flex-direction: column; align-items: center; gap: 14px; padding: 28px 20px; background: var(--card); border-radius: var(--radius); border: 1px solid var(--border); }
.mic-btn { width: 80px; height: 80px; border-radius: 50%; border: 3px solid var(--openai-border); background: var(--card2); color: var(--openai); font-size: 30px; cursor: pointer; transition: all 0.2s; display: flex; align-items: center; justify-content: center; user-select: none; -webkit-user-select: none; outline: none; position: relative; }
.mic-btn:hover { background: var(--openai-dim); border-color: var(--openai); transform: scale(1.05); }
.mic-btn.state-connected { border-color: var(--green); background: rgba(34,197,94,0.12); color: var(--green); animation: mic-pulse-idle 2s ease-in-out infinite; }
.mic-btn.state-speaking { border-color: var(--openai); background: var(--openai-dim); color: var(--openai); animation: mic-pulse-speak 0.8s ease-in-out infinite; }
@keyframes mic-pulse-idle { 0%,100% { box-shadow: 0 0 0 0 rgba(34,197,94,0.4); } 50% { box-shadow: 0 0 0 10px rgba(34,197,94,0); } }
@keyframes mic-pulse-speak { 0%,100% { box-shadow: 0 0 0 0 rgba(16,163,127,0.5); transform: scale(1); } 50% { box-shadow: 0 0 0 14px rgba(16,163,127,0); transform: scale(1.04); } }
.mic-label { font-size: 12px; color: var(--text-muted); }
.status-area { background: var(--card); border-radius: var(--radius-sm); border: 1px solid var(--border); padding: 10px 16px; display: flex; align-items: center; gap: 10px; }
.status-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--text-dim); flex-shrink: 0; transition: background 0.3s; }
.status-dot.dot-connected { background: var(--green); box-shadow: 0 0 6px rgba(34,197,94,0.6); }
.status-dot.dot-speaking { background: var(--openai); box-shadow: 0 0 6px rgba(16,163,127,0.6); animation: dot-blink 0.8s ease-in-out infinite; }
.status-dot.dot-thinking { background: #eab308; box-shadow: 0 0 6px rgba(234,179,8,0.6); }
@keyframes dot-blink { 0%,100% { opacity: 1; } 50% { opacity: 0.4; } }
#status { font-size: 14px; color: var(--text-muted); }
.subtitle-area { background: var(--card); border-radius: var(--radius-sm); border: 1px solid var(--border); padding: 14px 16px; min-height: 60px; display: flex; align-items: center; }
#subtitle { font-size: 18px; font-weight: 500; color: var(--text); line-height: 1.5; letter-spacing: 0.02em; }
#subtitle:empty::before { content: '　'; color: transparent; }
.chat-section { background: var(--card); border-radius: var(--radius); border: 1px solid var(--border); overflow: hidden; }
.chat-header { padding: 10px 16px; border-bottom: 1px solid var(--border); font-size: 12px; color: var(--text-muted); font-weight: 600; display: flex; align-items: center; justify-content: space-between; }
.chat-clear-btn { background: none; border: none; color: var(--text-dim); cursor: pointer; font-size: 11px; padding: 2px 6px; border-radius: 4px; transition: color 0.2s; }
.chat-clear-btn:hover { color: var(--text-muted); }
.chat-log { padding: 12px; display: flex; flex-direction: column; gap: 8px; min-height: 80px; max-height: 360px; overflow-y: auto; -webkit-overflow-scrolling: touch; }
.chat-log:empty::after { content: '会話がここに表示されます'; color: var(--text-dim); font-size: 13px; display: flex; justify-content: center; padding: 16px 0; }
.chat-msg { display: flex; flex-direction: column; max-width: 82%; }
.chat-msg.user { align-self: flex-end; align-items: flex-end; }
.chat-msg.ai { align-self: flex-start; align-items: flex-start; }
.msg-bubble { padding: 9px 13px; border-radius: 14px; font-size: 14px; line-height: 1.55; word-break: break-word; }
.chat-msg.user .msg-bubble { background: var(--blue-dim); border: 1px solid var(--blue-border); color: #93c5fd; border-bottom-right-radius: 4px; }
.chat-msg.ai .msg-bubble { background: var(--openai-dim); border: 1px solid var(--openai-border); color: #6ee7cf; border-bottom-left-radius: 4px; }
.msg-meta { font-size: 10px; color: var(--text-dim); margin-top: 3px; padding: 0 4px; }
.msg-meta .timing-highlight { color: var(--openai); font-weight: 600; }