:root{--navy: #0d3b66;--navy-dark: #092a4a;--green: #1b7f4d;--green-dark: #14603a;--red: #b3261e;--bg: #f4f6f8;--card: #ffffff;--text: #16212c;--muted: #51606e;--border: #d5dde4;--focus: #1a73e8}*{box-sizing:border-box}html,body{margin:0;padding:0;background:var(--bg);color:var(--text);font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif;-webkit-text-size-adjust:100%}button{font:inherit;cursor:pointer;min-height:48px;border-radius:12px;border:1px solid transparent}button:focus-visible,input:focus-visible,textarea:focus-visible{outline:3px solid var(--focus);outline-offset:2px}button:disabled{opacity:.45;cursor:not-allowed}.visually-hidden{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}.center-screen{min-height:100dvh;display:flex;align-items:center;justify-content:center;padding:16px}.card{background:var(--card);border:1px solid var(--border);border-radius:16px;padding:24px;max-width:480px;width:100%;box-shadow:0 2px 12px #0d3b6614}.brand-title{font-size:2.4rem;margin:0;color:var(--navy);letter-spacing:.02em}.brand-title.small{font-size:1.4rem;margin-right:8px}.brand-sub{color:var(--muted);margin:4px 0 20px;font-weight:600}.brand-sub.small{font-size:.85rem;margin:0}.explainer{font-size:.95rem;color:var(--muted);margin:8px 0}.login-card input[type=password]{width:100%;min-height:52px;font-size:1.1rem;padding:8px 14px;margin:12px 0;border:2px solid var(--border);border-radius:12px}.btn-primary{width:100%;background:var(--navy);color:#fff;font-size:1.15rem;font-weight:700;padding:14px}.btn-primary:active{background:var(--navy-dark)}.btn-secondary{background:#e8eef4;color:var(--navy);font-weight:600;border:1px solid var(--border);padding:10px 14px;flex:1}.btn-ghost{background:transparent;color:var(--navy);border:1px solid var(--border);padding:8px 12px;min-height:40px;font-size:.9rem}.error{color:var(--red);font-weight:600}.notice{font-size:.8rem;color:var(--muted);margin:6px 0 0}.notice.warn{color:var(--red);font-weight:600}.pending-box{text-align:center}.pending-code{font-size:2rem;font-weight:800;letter-spacing:.15em;color:var(--navy);background:#e8eef4;border-radius:12px;padding:12px;user-select:all}.lang-row{display:flex;justify-content:flex-end}.lang-toggle{display:inline-flex;border:1px solid var(--border);border-radius:10px;overflow:hidden}.lang-toggle button{min-height:40px;min-width:48px;border:none;border-radius:0;background:#fff;color:var(--muted);font-weight:700}.lang-toggle button.active{background:var(--navy);color:#fff}.main-screen{max-width:560px;margin:0 auto;padding:12px 16px calc(24px + env(safe-area-inset-bottom));display:flex;flex-direction:column;gap:14px;min-height:100dvh}.topbar{display:flex;align-items:center;justify-content:space-between;gap:8px;flex-wrap:wrap}.topbar-actions{display:flex;gap:8px;align-items:center}.pair-row{display:flex;align-items:center;justify-content:center;gap:14px}.pair-lang{font-size:1.2rem;font-weight:700;color:var(--navy)}.btn-swap{font-size:1.5rem;background:#e8eef4;color:var(--navy);border:1px solid var(--border);min-width:56px}.status{text-align:center;font-weight:700;padding:10px;border-radius:10px;background:#e8eef4;color:var(--navy);display:flex;align-items:center;justify-content:center;gap:10px}.status-listening,.status-error{background:#fdecea;color:var(--red)}.status-speaking,.status-generating_speech{background:#e6f4ec;color:var(--green-dark)}.rec-dot{width:14px;height:14px;border-radius:50%;background:var(--red);animation:pulse 1s infinite}@keyframes pulse{0%,to{opacity:1}50%{opacity:.3}}.record-buttons{display:grid;grid-template-columns:1fr;gap:12px}@media(min-width:420px){.record-buttons{grid-template-columns:1fr 1fr}}.btn-record{background:var(--navy);color:#fff;padding:22px 16px;border-radius:16px;display:flex;flex-direction:column;gap:6px;min-height:96px}.btn-record.alt{background:var(--green)}.btn-record.recording{background:var(--red);animation:recpulse 1.2s infinite}@keyframes recpulse{0%,to{box-shadow:0 0 #b3261e73}50%{box-shadow:0 0 0 12px #b3261e00}}.btn-record-label{font-size:1.25rem;font-weight:800}.btn-record-sub{font-size:.85rem;opacity:.9}.typed-row textarea{width:100%;border:2px solid var(--border);border-radius:12px;padding:10px 12px;font:inherit;resize:vertical;min-height:56px}.typed-buttons{display:flex;gap:10px;margin-top:8px}.result-card{background:var(--card);border:1px solid var(--border);border-radius:16px;padding:16px;display:flex;flex-direction:column;gap:12px}.result-label{font-size:.75rem;text-transform:uppercase;letter-spacing:.08em;color:var(--muted);font-weight:700}.result-text{margin:4px 0 0;font-size:1.05rem;overflow-wrap:anywhere}.result-text.large{font-size:1.35rem;font-weight:600}.result-block.highlight{border-left:4px solid var(--green);padding-left:12px}.controls{display:grid;grid-template-columns:1fr 1fr;gap:10px}.btn-control{background:#fff;border:1px solid var(--border);color:var(--navy);font-weight:600;padding:12px 8px}.footer-notices{margin-top:auto}.modal-backdrop{position:fixed;inset:0;background:#092a4a8c;display:flex;align-items:center;justify-content:center;padding:16px;z-index:10}.usage-table{width:100%;border-collapse:collapse;margin:12px 0 16px}.usage-table th,.usage-table td{text-align:left;padding:8px 6px;border-bottom:1px solid var(--border);font-size:.95rem}@media(prefers-color-scheme:dark){:root{--bg: #10181f;--card: #1a2530;--text: #e8eef4;--muted: #9fb0bf;--border: #2c3a47;--navy: #7db3e8;--navy-dark: #5e9bd6}.lang-toggle button{background:var(--card)}.btn-secondary,.btn-swap,.status{background:#223141;color:var(--text)}.btn-record{background:#235a8c}.btn-record.alt{background:var(--green-dark)}.btn-control{background:var(--card);color:var(--text)}.pending-code{background:#223141;color:var(--text)}}