:root {
    --hw-bg: #1a1d23;
    --hw-text: #f4f5f7;
    --hw-user: #2563eb;
    --hw-bot: #2d323b;
    --hw-muted: #8b94a8;
    --hw-accent: #10b981;
    --hw-shadow: 0 10px 40px rgba(0,0,0,0.4);
}

#hw-root { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif; }

.hw-launcher {
    position: fixed;
    bottom: 24px;
    right: 24px;
    z-index: 99998;
    background: var(--hw-user);
    color: #fff;
    border: none;
    border-radius: 24px;
    padding: 12px 20px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    box-shadow: var(--hw-shadow);
    align-items: center;
    gap: 8px;
    transition: transform .15s ease;
}
.hw-launcher:hover { transform: translateY(-2px); }

.hw-panel {
    position: fixed;
    bottom: 24px;
    right: 24px;
    width: 380px;
    max-width: calc(100vw - 32px);
    height: 560px;
    max-height: calc(100vh - 80px);
    z-index: 99999;
    background: var(--hw-bg);
    color: var(--hw-text);
    border-radius: 16px;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    box-shadow: var(--hw-shadow);
}
.hw-panel[hidden] { display: none; }

.hw-panel__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 18px;
    border-bottom: 1px solid rgba(255,255,255,0.08);
    background: rgba(0,0,0,0.15);
}
.hw-panel__title { font-weight: 600; font-size: 14px; }
.hw-close-btn {
    background: none; border: none; color: var(--hw-muted);
    cursor: pointer; font-size: 16px; padding: 4px 8px; border-radius: 4px;
}
.hw-close-btn:hover { color: var(--hw-text); background: rgba(255,255,255,0.05); }

.hw-messages {
    flex: 1; overflow-y: auto; padding: 16px;
    display: flex; flex-direction: column; gap: 10px;
}

.hw-msg {
    max-width: 80%; padding: 10px 14px; border-radius: 16px;
    line-height: 1.45; font-size: 14px;
    white-space: pre-wrap; word-wrap: break-word;
}
.hw-msg--user { align-self: flex-end; background: var(--hw-user); color: #fff; border-bottom-right-radius: 4px; }
.hw-msg--bot  { align-self: flex-start; background: var(--hw-bot); color: var(--hw-text); border-bottom-left-radius: 4px; }
.hw-msg--bot.hw-pending { color: var(--hw-muted); font-style: italic; }

.hw-input-row {
    display: flex; gap: 8px; padding: 12px;
    border-top: 1px solid rgba(255,255,255,0.08);
    background: rgba(0,0,0,0.15);
}
#hw-input {
    flex: 1;
    background: rgba(255,255,255,0.06);
    border: 1px solid rgba(255,255,255,0.08);
    color: var(--hw-text);
    border-radius: 12px;
    padding: 10px 14px;
    font-size: 14px;
    font-family: inherit;
    resize: none;
    outline: none;
}
#hw-input:focus { border-color: var(--hw-user); }
#hw-send {
    background: var(--hw-user); color: #fff;
    border: none; padding: 0 18px;
    border-radius: 12px; cursor: pointer;
    font-weight: 600; font-size: 14px;
}
#hw-send:disabled { opacity: .5; cursor: not-allowed; }

/* Era cards: rendered in chat after the bot emits a ui_actions type=era_cards. */
.hw-era-cards {
    align-self: flex-start;
    display: flex; flex-direction: column;
    gap: 8px; max-width: 92%;
    padding: 10px;
    background: rgba(255,255,255,0.04);
    border-radius: 14px;
    border: 1px solid rgba(255,255,255,0.07);
}
.hw-era-title {
    font-size: 13px; color: var(--hw-muted);
    margin-bottom: 4px;
}
.hw-era-card {
    text-align: left;
    background: var(--hw-bot);
    color: var(--hw-text);
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: 12px;
    padding: 10px 14px;
    cursor: pointer;
    font-family: inherit;
    font-size: 14px;
    display: flex; flex-direction: column;
    gap: 4px;
    transition: background .12s ease, transform .12s ease, border-color .12s ease;
    position: relative;
}
.hw-era-card:hover {
    background: rgba(37,99,235,0.25);
    border-color: var(--hw-user);
    transform: translateY(-1px);
}
.hw-era-card--best {
    border-color: var(--hw-accent);
    box-shadow: 0 0 0 1px var(--hw-accent) inset;
}
.hw-era-dates {
    font-weight: 600; font-size: 13px;
    color: var(--hw-text);
}
.hw-era-label {
    font-size: 12px; color: var(--hw-muted);
}
.hw-era-badge {
    position: absolute;
    top: 8px; right: 10px;
    background: var(--hw-accent);
    color: #0a0d12;
    font-weight: 700;
    font-size: 10px;
    padding: 2px 8px;
    border-radius: 999px;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}
.hw-era-error, .hw-era-empty {
    font-size: 13px;
    color: var(--hw-muted);
    padding: 6px 10px;
}