@import url('https://fonts.googleapis.com/css2?family=Syne:wght@600;700&family=IBM+Plex+Mono:wght@400;500&display=swap');

/* ── 変数（WordPress テーマと衝突しないよう lsc- プレフィックス） ── */
.lsc-root {
    --lsc-navy:       #0A1628;
    --lsc-navy-light: #0F2447;
    --lsc-navy-mid:   #162D56;
    --lsc-blue:       #2563EB;
    --lsc-blue-light: #60A5FA;
    --lsc-blue-dim:   #1E3A6E;
    --lsc-green:      #10B981;
    --lsc-gray-200:   #E2E8F0;
    --lsc-gray-500:   #64748B;
    --lsc-white:      #FFFFFF;
    --lsc-font-d:     'Syne', sans-serif;
    --lsc-font-m:     'IBM Plex Mono', monospace;
    --lsc-font-b:     -apple-system, 'Noto Sans JP', sans-serif;
}

/* ── トリガーボタン ── */
.lsc-root .lsc-trigger {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 56px;
    height: 56px;
    background: var(--lsc-navy);
    border: none;
    border-radius: 14px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 8px 32px rgba(37, 99, 235, .35), 0 2px 8px rgba(0,0,0,.2);
    transition: transform .2s, box-shadow .2s;
    z-index: 9990;
    padding: 0;
}
.lsc-root .lsc-trigger:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 40px rgba(37, 99, 235, .5);
}
.lsc-root .lsc-trigger svg {
    width: 24px;
    height: 24px;
    fill: none;
    stroke: var(--lsc-white);
    stroke-width: 1.5;
    flex-shrink: 0;
}
.lsc-root .lsc-notif-dot {
    position: absolute;
    top: -3px;
    right: -3px;
    width: 10px;
    height: 10px;
    background: var(--lsc-blue-light);
    border-radius: 50%;
    border: 2px solid #F8FAFC;
}

/* ── チャットパネル ── */
.lsc-root .lsc-panel {
    position: fixed;
    bottom: 5.5rem;
    right: 2rem;
    width: min(420px, calc(100vw - 2rem));
    height: min(640px, calc(100vh - 8rem));
    background: var(--lsc-navy);
    border-radius: 20px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    box-shadow: 0 24px 64px rgba(0,0,0,.4), 0 8px 24px rgba(37,99,235,.2);
    z-index: 9989;
    opacity: 0;
    transform: translateY(16px) scale(.96);
    transition: opacity .25s, transform .25s;
    pointer-events: none;
}
.lsc-root .lsc-panel.lsc-open {
    opacity: 1;
    transform: translateY(0) scale(1);
    pointer-events: all;
}

/* ── ヘッダー ── */
.lsc-root .lsc-header {
    background: var(--lsc-navy-light);
    padding: .9rem 1.1rem;
    display: flex;
    align-items: center;
    gap: .7rem;
    border-bottom: 1px solid var(--lsc-blue-dim);
    flex-shrink: 0;
}
.lsc-root .lsc-avatar {
    width: 36px;
    height: 36px;
    background: linear-gradient(135deg, var(--lsc-blue), #1E40AF);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}
.lsc-root .lsc-avatar svg {
    width: 18px;
    height: 18px;
    fill: none;
    stroke: var(--lsc-white);
    stroke-width: 1.5;
}
.lsc-root .lsc-title {
    flex: 1;
    min-width: 0;
    overflow: hidden;
}
.lsc-root .lsc-title h3 {
    font-family: var(--lsc-font-b);
    font-size: .95rem;
    font-weight: 700;
    letter-spacing: .04em;
    color: var(--lsc-white);
    margin: 0;
    line-height: 1.2;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.lsc-root .lsc-title p {
    font-family: var(--lsc-font-m);
    font-size: .62rem;
    color: var(--lsc-blue-light);
    display: flex;
    align-items: center;
    gap: .3rem;
    margin: 0;
}
.lsc-root .lsc-status-dot {
    width: 6px;
    height: 6px;
    background: var(--lsc-green);
    border-radius: 50%;
    animation: lsc-pulse 2s infinite;
    flex-shrink: 0;
}
@keyframes lsc-pulse { 0%,100%{opacity:1}50%{opacity:.35} }

.lsc-root .lsc-close {
    background: none;
    border: none;
    cursor: pointer;
    color: var(--lsc-gray-500);
    padding: .25rem;
    border-radius: 6px;
    transition: color .2s, background .2s;
    display: flex;
    line-height: 1;
}
.lsc-root .lsc-close:hover { color: var(--lsc-white); background: var(--lsc-blue-dim); }
.lsc-root .lsc-close svg {
    width: 16px;
    height: 16px;
    fill: none;
    stroke: currentColor;
    stroke-width: 2;
}

/* ── メッセージエリア ── */
.lsc-root .lsc-messages {
    flex: 1;
    overflow-y: auto;
    padding: 1rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    scroll-behavior: smooth;
}
.lsc-root .lsc-messages::-webkit-scrollbar { width: 4px; }
.lsc-root .lsc-messages::-webkit-scrollbar-thumb { background: var(--lsc-blue-dim); border-radius: 2px; }

/* ウェルカム */
.lsc-root .lsc-welcome { text-align: center; padding: 1.2rem .5rem; }
.lsc-root .lsc-welcome h4 {
    font-family: var(--lsc-font-d);
    font-size: .9rem;
    font-weight: 600;
    color: var(--lsc-white);
    margin: 0 0 .35rem;
}
.lsc-root .lsc-welcome p {
    font-family: var(--lsc-font-b);
    font-size: .75rem;
    color: var(--lsc-gray-500);
    line-height: 1.5;
    margin: 0 0 .9rem;
}

/* クイック質問 */
.lsc-root .lsc-quick-qs {
    display: flex;
    flex-wrap: wrap;
    gap: .35rem;
    justify-content: center;
}
.lsc-root .lsc-quick-q {
    font-family: var(--lsc-font-b);
    font-size: .72rem;
    padding: .3rem .65rem;
    background: var(--lsc-blue-dim);
    color: var(--lsc-blue-light);
    border: none;
    border-radius: 6px;
    cursor: pointer;
    transition: background .15s;
}
.lsc-root .lsc-quick-q:hover { background: var(--lsc-blue); color: var(--lsc-white); }

/* メッセージバブル */
.lsc-root .lsc-row { display: flex; flex-direction: column; gap: .2rem; }
.lsc-root .lsc-row.lsc-user { align-items: flex-end; }
.lsc-root .lsc-row.lsc-bot  { align-items: flex-start; }

.lsc-root .lsc-bubble {
    max-width: 86%;
    padding: .65rem .9rem;
    font-family: var(--lsc-font-b);
    font-size: .82rem;
    line-height: 1.65;
    white-space: pre-wrap;
    word-break: break-word;
}
.lsc-root .lsc-row.lsc-user .lsc-bubble {
    background: var(--lsc-blue);
    color: var(--lsc-white);
    border-radius: 12px 12px 3px 12px;
}
.lsc-root .lsc-row.lsc-bot .lsc-bubble {
    background: var(--lsc-navy-mid);
    color: var(--lsc-gray-200);
    border-radius: 12px 12px 12px 3px;
    border-left: 3px solid var(--lsc-blue);
}
.lsc-root .lsc-row.lsc-bot .lsc-bubble strong { color: var(--lsc-blue-light); }
.lsc-root .lsc-bubble ul { margin: .4rem 0 .4rem 1.1rem; padding: 0; list-style: disc; }
.lsc-root .lsc-bubble li { margin-bottom: .2rem; }

.lsc-root .lsc-time {
    font-family: var(--lsc-font-m);
    font-size: .58rem;
    color: var(--lsc-gray-500);
    padding: 0 .4rem;
}

/* 参照記事チップ */
.lsc-root .lsc-sources {
    max-width: 86%;
    display: flex;
    flex-wrap: wrap;
    gap: .3rem;
    margin-top: .2rem;
}
.lsc-root .lsc-chip {
    font-family: var(--lsc-font-m);
    font-size: .6rem;
    padding: .22rem .55rem;
    background: var(--lsc-blue-dim);
    color: var(--lsc-blue-light);
    border-radius: 4px;
    text-decoration: none;
    border: 1px solid rgba(96,165,250,.2);
    transition: background .15s;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 200px;
    display: inline-block;
}
.lsc-root .lsc-chip::before { content: '↗ '; }
.lsc-root .lsc-chip:hover { background: #1E3F8A; color: var(--lsc-white); }

/* タイピングインジケーター */
.lsc-root .lsc-typing {
    display: flex;
    align-items: center;
    gap: .3rem;
    padding: .6rem .9rem;
    background: var(--lsc-navy-mid);
    border-radius: 12px 12px 12px 3px;
    border-left: 3px solid var(--lsc-blue);
    width: fit-content;
}
.lsc-root .lsc-dot {
    width: 6px;
    height: 6px;
    background: var(--lsc-blue-light);
    border-radius: 50%;
    animation: lsc-bounce 1.2s infinite;
}
.lsc-root .lsc-dot:nth-child(2){animation-delay:.2s}
.lsc-root .lsc-dot:nth-child(3){animation-delay:.4s}
@keyframes lsc-bounce {
    0%,60%,100%{opacity:.3;transform:translateY(0)}
    30%{opacity:1;transform:translateY(-4px)}
}

/* エラーメッセージ */
.lsc-root .lsc-error {
    font-family: var(--lsc-font-b);
    font-size: .78rem;
    color: #FCA5A5;
    background: rgba(239,68,68,.1);
    border-left: 3px solid #EF4444;
    border-radius: 0 8px 8px 0;
    padding: .5rem .8rem;
    max-width: 86%;
}

/* ── 入力エリア ── */
.lsc-root .lsc-input-area {
    padding: .8rem 1rem;
    background: var(--lsc-navy-light);
    border-top: 1px solid var(--lsc-blue-dim);
    flex-shrink: 0;
}
.lsc-root .lsc-input-row {
    display: flex;
    gap: .5rem;
    align-items: flex-end;
}
.lsc-root .lsc-textarea {
    flex: 1;
    background: var(--lsc-navy-mid);
    border: 1px solid var(--lsc-blue-dim);
    border-radius: 10px;
    padding: .55rem .8rem;
    color: var(--lsc-white);
    font-family: var(--lsc-font-b);
    font-size: .82rem;
    resize: none;
    outline: none;
    transition: border-color .2s;
    min-height: 40px;
    max-height: 100px;
    line-height: 1.5;
    box-sizing: border-box;
}
.lsc-root .lsc-textarea::placeholder { color: var(--lsc-gray-500); }
.lsc-root .lsc-textarea:focus { border-color: var(--lsc-blue); }
.lsc-root .lsc-textarea:disabled { opacity: .5; cursor: not-allowed; }

.lsc-root .lsc-send {
    width: 40px;
    height: 40px;
    background: var(--lsc-blue);
    border: none;
    border-radius: 10px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: background .2s, transform .1s;
    padding: 0;
}
.lsc-root .lsc-send:hover:not(:disabled) { background: #1D4ED8; transform: scale(1.05); }
.lsc-root .lsc-send:disabled { opacity: .5; cursor: not-allowed; }
.lsc-root .lsc-send svg {
    width: 16px;
    height: 16px;
    fill: none;
    stroke: var(--lsc-white);
    stroke-width: 2;
}
.lsc-root .lsc-hint {
    font-family: var(--lsc-font-m);
    font-size: .58rem;
    color: var(--lsc-gray-500);
    margin-top: .35rem;
    text-align: center;
}

/* ── モバイル ── */
@media (max-width: 640px) {
    .lsc-root .lsc-panel {
        width: calc(100vw - 1.5rem);
        right: .75rem;
        left: .75rem;
        bottom: 4.8rem;
        height: calc(100dvh - 6.5rem);
        border-radius: 16px;
    }
    .lsc-root .lsc-trigger {
        bottom: 1.2rem;
        right: 1.2rem;
    }
}