/* ============================================================
   AI Chat Widget — "Ask me about Hector"
   Standalone stylesheet; uses the design tokens from style.css
   so light/dark theming works automatically.
   ============================================================ */

/* ---- Floating bubble ---- */
.chat-bubble {
    position: fixed;
    right: 24px;
    bottom: 24px;
    z-index: 1100;
    width: 56px;
    height: 56px;
    border: none;
    border-radius: 50%;
    background: var(--accent);
    color: var(--accent-contrast);
    font-size: 1.3rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.chat-bubble:hover {
    transform: translateY(-2px) scale(1.05);
}

.chat-bubble .chat-icon-close { display: none; }
.chat-bubble.open .chat-icon-open { display: none; }
.chat-bubble.open .chat-icon-close { display: inline; }

/* ---- Panel ---- */
.chat-panel {
    position: fixed;
    right: 24px;
    bottom: 92px;
    z-index: 1100;
    width: 380px;
    max-width: calc(100vw - 48px);
    height: 540px;
    max-height: calc(100vh - 130px);
    display: flex;
    flex-direction: column;
    background: var(--surface);
    border: 1px solid var(--line-strong);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    overflow: hidden;
    opacity: 0;
    transform: translateY(12px);
    pointer-events: none;
    transition: var(--transition);
}

.chat-panel.open {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
}

/* ---- Header ---- */
.chat-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 14px 16px;
    border-bottom: 1px solid var(--line);
    background: var(--surface-2);
}

.chat-header-title {
    font-family: var(--font-display);
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-strong);
    margin: 0;
}

.chat-header-sub {
    font-family: var(--font-mono);
    font-size: 0.68rem;
    color: var(--muted);
    margin: 2px 0 0;
}

.chat-close {
    border: none;
    background: transparent;
    color: var(--muted);
    font-size: 1rem;
    cursor: pointer;
    padding: 6px;
    border-radius: var(--radius-sm);
    transition: var(--transition);
}

.chat-close:hover {
    color: var(--text);
    background: var(--accent-soft);
}

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

.chat-msg {
    max-width: 85%;
    padding: 10px 13px;
    border-radius: var(--radius-sm);
    font-family: var(--font-body);
    font-size: 0.88rem;
    line-height: 1.5;
    color: var(--text);
    white-space: pre-wrap;
    word-wrap: break-word;
}

.chat-msg.user {
    align-self: flex-end;
    background: var(--accent-soft);
    border: 1px solid var(--accent-line);
}

.chat-msg.assistant {
    align-self: flex-start;
    background: var(--surface-2);
    border: 1px solid var(--line);
}

.chat-msg.error {
    align-self: flex-start;
    background: rgba(239, 68, 68, 0.08);
    border: 1px solid rgba(239, 68, 68, 0.35);
    color: var(--text);
}

/* Typing indicator */
.chat-typing {
    align-self: flex-start;
    display: flex;
    gap: 5px;
    padding: 12px 14px;
    background: var(--surface-2);
    border: 1px solid var(--line);
    border-radius: var(--radius-sm);
}

.chat-typing span {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--muted);
    animation: chat-blink 1.2s infinite ease-in-out;
}

.chat-typing span:nth-child(2) { animation-delay: 0.2s; }
.chat-typing span:nth-child(3) { animation-delay: 0.4s; }

@keyframes chat-blink {
    0%, 60%, 100% { opacity: 0.25; transform: translateY(0); }
    30% { opacity: 1; transform: translateY(-3px); }
}

/* ---- Input ---- */
.chat-form {
    display: flex;
    gap: 8px;
    padding: 12px;
    border-top: 1px solid var(--line);
    background: var(--surface-2);
}

.chat-input {
    flex: 1;
    padding: 10px 12px;
    background: var(--surface);
    border: 1px solid var(--line-strong);
    border-radius: var(--radius-sm);
    color: var(--text);
    font-family: var(--font-body);
    font-size: 0.88rem;
    outline: none;
    transition: var(--transition);
}

.chat-input:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-soft);
}

.chat-input::placeholder { color: var(--muted); }

.chat-send {
    border: none;
    background: var(--accent);
    color: var(--accent-contrast);
    width: 40px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 0.9rem;
    transition: var(--transition);
}

.chat-send:hover:not(:disabled) { transform: translateY(-1px); }
.chat-send:disabled { opacity: 0.5; cursor: not-allowed; }

.chat-disclaimer {
    padding: 0 12px 10px;
    margin: 0;
    background: var(--surface-2);
    font-family: var(--font-mono);
    font-size: 0.62rem;
    color: var(--muted);
    text-align: center;
}

/* ---- Mobile ---- */
@media (max-width: 600px) {
    .chat-panel {
        right: 12px;
        left: 12px;
        bottom: 86px;
        width: auto;
        max-width: none;
        height: 72vh;
    }

    .chat-bubble {
        right: 16px;
        bottom: 16px;
    }
}