/* AIチャット（白黒グレー＋黄色） */
.nbc { --c-ink: var(--nb-ink, #141414); --c-sub: var(--nb-sub, #66665f); --c-line: var(--nb-line, #e4e4e1); --c-bg2: var(--nb-bg2, #f4f4f2); --c-y: var(--nb-y, #f2c200); --c-y-soft: var(--nb-y-soft, #fff6cc); font-family: var(--nb-sans, "Hiragino Sans", "Noto Sans JP", sans-serif); }
.nbc-fab { position: fixed; right: 20px; bottom: 20px; z-index: 9990; display: inline-flex; align-items: center; gap: 10px; padding: 14px 20px 14px 16px; border: 0; border-radius: 999px; background: var(--c-ink); color: #fff; font: inherit; font-size: 14px; font-weight: 700; letter-spacing: .04em; cursor: pointer; box-shadow: 0 12px 30px rgba(0, 0, 0, .22); transition: transform .2s ease; }
.nbc-fab:hover { transform: translateY(-2px); }
.nbc-fab:focus-visible { outline: 3px solid var(--c-y); outline-offset: 3px; }
.nbc-fab-dot { width: 10px; height: 10px; border-radius: 50%; background: var(--c-y); box-shadow: 0 0 0 4px rgba(242, 194, 0, .25); }
.nbc[data-open="1"] .nbc-fab { display: none; }

.nbc-panel { position: fixed; right: 20px; bottom: 20px; z-index: 9991; width: 380px; max-width: calc(100vw - 24px); height: min(620px, calc(100vh - 40px)); display: flex; flex-direction: column; background: #fff; color: var(--c-ink); border: 1px solid var(--c-line); border-radius: 14px; box-shadow: 0 24px 60px rgba(0, 0, 0, .22); overflow: hidden; }
.nbc-panel[hidden] { display: none; }
.nbc-head { display: flex; align-items: center; justify-content: space-between; gap: 8px; padding: 14px 14px 12px 18px; background: var(--c-ink); color: #fff; border-bottom: 3px solid var(--c-y); }
.nbc-title { margin: 0; font-size: 15px; font-weight: 700; letter-spacing: .06em; }
.nbc-sub { margin: 2px 0 0; font-size: 11.5px; opacity: .75; }
.nbc-close { border: 0; background: transparent; color: #fff; padding: 6px; border-radius: 6px; cursor: pointer; line-height: 0; }
.nbc-close:focus-visible { outline: 2px solid var(--c-y); }

.nbc-log { flex: 1; overflow-y: auto; padding: 16px 14px 8px; display: flex; flex-direction: column; gap: 10px; background: var(--c-bg2); overscroll-behavior: contain; }
.nbc-msg { max-width: 88%; display: grid; gap: 8px; }
.nbc-msg p { margin: 0; padding: 10px 13px; font-size: 14px; line-height: 1.75; white-space: pre-wrap; word-break: break-word; border-radius: 12px; }
.nbc-msg a { color: inherit; text-decoration: underline; text-underline-offset: 2px; word-break: break-all; }
.nbc-a { align-self: flex-start; }
.nbc-a > p { background: #fff; border: 1px solid var(--c-line); border-top-left-radius: 3px; }
.nbc-u { align-self: flex-end; }
.nbc-u > p { background: var(--c-ink); color: #fff; border-top-right-radius: 3px; }
.nbc-wait { flex-direction: row; display: flex; gap: 5px; padding: 14px 16px; background: #fff; border: 1px solid var(--c-line); border-radius: 12px; border-top-left-radius: 3px; width: auto; }
.nbc-wait span { width: 6px; height: 6px; border-radius: 50%; background: var(--c-sub); animation: nbc-dot 1.1s infinite ease-in-out; }
.nbc-wait span:nth-child(2) { animation-delay: .15s; }
.nbc-wait span:nth-child(3) { animation-delay: .3s; }
@keyframes nbc-dot { 0%, 80%, 100% { opacity: .25; transform: translateY(0); } 40% { opacity: 1; transform: translateY(-3px); } }

.nbc-acts { display: grid; gap: 6px; }
.nbc-fb { display: flex; gap: 6px; flex-wrap: wrap; }
.nbc-fbb { border: 1px solid var(--c-line); background: #fff; color: var(--c-sub); font: inherit; font-size: 12px; padding: 4px 10px; border-radius: 999px; cursor: pointer; }
.nbc-fbb:hover { border-color: var(--c-ink); color: var(--c-ink); }
.nbc-thanks { font-size: 12px; color: var(--c-sub); }
.nbc-line { display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 11px 16px; border-radius: 999px; background: var(--c-y); color: var(--c-ink) !important; text-decoration: none !important; font-size: 14px; font-weight: 700; }
.nbc-line:hover { filter: brightness(.96); }
.nbc-hint { margin: 0 !important; padding: 0 4px !important; background: none !important; border: 0 !important; font-size: 11.5px !important; color: var(--c-sub); line-height: 1.6 !important; }

.nbc-sug { display: flex; flex-wrap: wrap; gap: 6px; padding: 4px 14px 10px; background: var(--c-bg2); }
.nbc-sug[hidden] { display: none; }
.nbc-chip { border: 1px solid var(--c-ink); background: #fff; color: var(--c-ink); font: inherit; font-size: 12.5px; padding: 6px 12px; border-radius: 999px; cursor: pointer; text-align: left; }
.nbc-chip:hover { background: var(--c-y-soft); }

.nbc-form { display: flex; align-items: flex-end; gap: 8px; padding: 10px 12px; border-top: 1px solid var(--c-line); background: #fff; }
.nbc-form textarea { flex: 1; min-width: 0; resize: none; border: 1px solid var(--c-line); border-radius: 10px; padding: 10px 12px; font: inherit; font-size: 16px; line-height: 1.5; max-height: 120px; background: #fff; color: var(--c-ink); }
.nbc-form textarea:focus { outline: none; border-color: var(--c-ink); }
.nbc-send { flex: none; width: 44px; height: 44px; border: 0; border-radius: 10px; background: var(--c-ink); color: var(--c-y); cursor: pointer; display: grid; place-items: center; }
.nbc-send:focus-visible { outline: 3px solid var(--c-y); }
.nbc-hp { position: absolute !important; left: -9999px !important; width: 1px; height: 1px; opacity: 0; }
.nbc-note { margin: 0; padding: 0 14px 10px; font-size: 10.5px; line-height: 1.6; color: var(--c-sub); background: #fff; }

@media (max-width: 760px) {
	.nbc-fab { right: 12px; bottom: calc(76px + env(safe-area-inset-bottom)); padding: 12px 16px 12px 13px; font-size: 13px; }
	.nbc-panel { right: 0; left: 0; bottom: 0; width: 100%; max-width: none; height: 100%; height: 100dvh; border-radius: 0; border: 0; }
	body.nbc-is-open { overflow: hidden; }
	body.nbc-is-open .nb-fixbar { display: none; }
	.nbc-form { padding-bottom: calc(10px + env(safe-area-inset-bottom)); }
}
@media (prefers-reduced-motion: reduce) {
	.nbc-fab, .nbc-wait span { transition: none; animation: none; }
}
.nbc-sr { position: absolute !important; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }