/* --------------------------------------------------------------------------
   UPQOR Chat Widget — scoped under .upq-* to avoid clashing with host page.
   Design register: refined enterprise (Intercom/Drift), not playful.
   -------------------------------------------------------------------------- */

.upq-root,
.upq-root * {
    box-sizing: border-box;
}

.upq-root {
    --upq-primary: #4338ca;
    --upq-primary-hover: #3730a3;
    --upq-primary-light: #eef2ff;
    --upq-bg: #ffffff;
    --upq-surface: #f8fafc;
    --upq-border: #e2e8f0;
    --upq-border-strong: #cbd5e1;
    --upq-text: #0f172a;
    --upq-text-muted: #64748b;
    --upq-text-light: #94a3b8;
    --upq-success: #059669;
    --upq-danger: #dc2626;
    --upq-radius: 10px;
    --upq-shadow: 0 10px 25px -5px rgba(15, 23, 42, 0.12),
                  0 4px 10px -3px rgba(15, 23, 42, 0.06);

    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
                 "Helvetica Neue", Arial, sans-serif;
    font-size: 14px;
    color: var(--upq-text);
    line-height: 1.5;
}

/* Floating launcher bubble ---------------------------------------------- */
.upq-launcher {
    position: fixed;
    right: 24px;
    bottom: 24px;
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: var(--upq-primary);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    border: none;
    box-shadow: var(--upq-shadow);
    transition: transform 0.18s ease, background 0.18s ease;
    z-index: 9998;
}
.upq-launcher:hover {
    background: var(--upq-primary-hover);
    transform: translateY(-2px);
}
.upq-launcher svg { width: 24px; height: 24px; }

/* Chat panel ----------------------------------------------------------- */
.upq-panel {
    position: fixed;
    right: 24px;
    bottom: 96px;
    width: 380px;
    max-width: calc(100vw - 32px);
    height: 600px;
    max-height: calc(100vh - 120px);
    background: var(--upq-bg);
    border-radius: 14px;
    box-shadow: var(--upq-shadow);
    border: 1px solid var(--upq-border);
    display: none;
    flex-direction: column;
    overflow: hidden;
    z-index: 9999;
    opacity: 0;
    transform: translateY(8px);
    transition: opacity 0.22s ease, transform 0.22s ease;
}
.upq-panel.upq-open {
    display: flex;
    opacity: 1;
    transform: translateY(0);
}

/* Header --------------------------------------------------------------- */
.upq-header {
    padding: 16px 18px;
    background: var(--upq-primary);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-shrink: 0;
}
.upq-header-title {
    display: flex;
    align-items: center;
    gap: 10px;
}
.upq-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.18);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 13px;
    letter-spacing: 0.5px;
}
.upq-title-text h3 {
    margin: 0;
    font-size: 14px;
    font-weight: 600;
    line-height: 1.2;
}
.upq-title-text p {
    margin: 2px 0 0;
    font-size: 12px;
    opacity: 0.85;
    line-height: 1.2;
}
.upq-close {
    background: transparent;
    border: none;
    color: #fff;
    cursor: pointer;
    padding: 4px;
    border-radius: 6px;
    opacity: 0.8;
    transition: opacity 0.15s, background 0.15s;
}
.upq-close:hover { opacity: 1; background: rgba(255, 255, 255, 0.1); }

/* Category chooser ----------------------------------------------------- */
.upq-category-row {
    padding: 10px 16px;
    background: var(--upq-surface);
    border-bottom: 1px solid var(--upq-border);
    display: flex;
    align-items: center;
    gap: 8px;
    flex-shrink: 0;
}
.upq-category-label {
    font-size: 12px;
    color: var(--upq-text-muted);
    font-weight: 500;
}
.upq-category-select {
    flex: 1;
    font-size: 13px;
    padding: 6px 8px;
    border: 1px solid var(--upq-border-strong);
    border-radius: 6px;
    background: #fff;
    color: var(--upq-text);
    cursor: pointer;
    font-family: inherit;
}
.upq-category-select:focus { outline: 2px solid var(--upq-primary-light); outline-offset: 1px; }

/* Message list --------------------------------------------------------- */
.upq-messages {
    flex: 1;
    overflow-y: auto;
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    background: var(--upq-surface);
}
.upq-messages::-webkit-scrollbar { width: 6px; }
.upq-messages::-webkit-scrollbar-thumb { background: var(--upq-border-strong); border-radius: 3px; }

.upq-msg {
    max-width: 85%;
    display: flex;
    flex-direction: column;
    gap: 6px;
    animation: upq-fade-in 0.22s ease;
}
@keyframes upq-fade-in {
    from { opacity: 0; transform: translateY(4px); }
    to   { opacity: 1; transform: translateY(0); }
}
.upq-msg-user { align-self: flex-end; }
.upq-msg-bot  { align-self: flex-start; }

.upq-bubble {
    padding: 10px 14px;
    border-radius: 14px;
    font-size: 14px;
    line-height: 1.5;
    white-space: pre-wrap;
    word-break: break-word;
}
.upq-msg-user .upq-bubble {
    background: var(--upq-primary);
    color: #fff;
    border-bottom-right-radius: 4px;
}
.upq-msg-bot .upq-bubble {
    background: #fff;
    color: var(--upq-text);
    border: 1px solid var(--upq-border);
    border-bottom-left-radius: 4px;
}

/* Sources panel -------------------------------------------------------- */
.upq-sources {
    margin-top: 2px;
    font-size: 12px;
}
.upq-sources-toggle {
    background: none;
    border: none;
    color: var(--upq-primary);
    cursor: pointer;
    padding: 0;
    font-size: 12px;
    font-weight: 500;
    font-family: inherit;
}
.upq-sources-toggle:hover { text-decoration: underline; }
.upq-sources-list {
    margin-top: 6px;
    padding: 10px;
    background: var(--upq-primary-light);
    border-radius: 8px;
    display: none;
}
.upq-sources-list.upq-open { display: block; }
.upq-source-item {
    font-size: 12px;
    color: var(--upq-text-muted);
    padding: 6px 0;
    border-bottom: 1px solid rgba(67, 56, 202, 0.1);
    line-height: 1.45;
}
.upq-source-item:last-child { border-bottom: none; }
.upq-source-tag {
    display: inline-block;
    background: #fff;
    color: var(--upq-primary);
    font-weight: 500;
    font-size: 11px;
    padding: 1px 6px;
    border-radius: 4px;
    margin-right: 6px;
}

/* Feedback buttons ----------------------------------------------------- */
.upq-feedback {
    display: flex;
    align-items: center;
    gap: 4px;
    margin-top: 4px;
}
.upq-feedback-btn {
    background: none;
    border: none;
    color: var(--upq-text-light);
    cursor: pointer;
    padding: 4px;
    border-radius: 4px;
    transition: background 0.15s, color 0.15s;
}
.upq-feedback-btn:hover { background: var(--upq-primary-light); color: var(--upq-primary); }
.upq-feedback-btn.upq-voted-up    { color: var(--upq-success); }
.upq-feedback-btn.upq-voted-down  { color: var(--upq-danger); }
.upq-feedback-btn svg { width: 14px; height: 14px; display: block; }
.upq-feedback-text {
    font-size: 11px;
    color: var(--upq-text-light);
    margin-left: 4px;
}

/* Typing indicator ----------------------------------------------------- */
.upq-typing {
    display: flex;
    gap: 4px;
    padding: 12px 14px;
    background: #fff;
    border: 1px solid var(--upq-border);
    border-radius: 14px;
    border-bottom-left-radius: 4px;
    align-self: flex-start;
    max-width: 85%;
}
.upq-typing span {
    width: 6px; height: 6px; border-radius: 50%;
    background: var(--upq-text-light);
    animation: upq-bounce 1.4s infinite ease-in-out;
}
.upq-typing span:nth-child(2) { animation-delay: 0.2s; }
.upq-typing span:nth-child(3) { animation-delay: 0.4s; }
@keyframes upq-bounce {
    0%, 80%, 100% { transform: scale(0.6); opacity: 0.4; }
    40%           { transform: scale(1);   opacity: 1; }
}

/* Composer ------------------------------------------------------------- */
.upq-composer {
    padding: 12px 14px;
    border-top: 1px solid var(--upq-border);
    background: #fff;
    display: flex;
    gap: 8px;
    align-items: flex-end;
    flex-shrink: 0;
}
.upq-input {
    flex: 1;
    border: 1px solid var(--upq-border-strong);
    border-radius: 8px;
    padding: 9px 12px;
    font-size: 14px;
    resize: none;
    max-height: 96px;
    min-height: 38px;
    font-family: inherit;
    color: var(--upq-text);
    outline: none;
    transition: border-color 0.15s;
    line-height: 1.4;
}
.upq-input:focus { border-color: var(--upq-primary); }
.upq-send {
    background: var(--upq-primary);
    color: #fff;
    border: none;
    border-radius: 8px;
    padding: 0 14px;
    height: 38px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    transition: background 0.15s;
    font-family: inherit;
    display: flex;
    align-items: center;
    justify-content: center;
}
.upq-send:hover:not(:disabled) { background: var(--upq-primary-hover); }
.upq-send:disabled { opacity: 0.5; cursor: not-allowed; }
.upq-send svg { width: 16px; height: 16px; }

/* Welcome state -------------------------------------------------------- */
.upq-welcome {
    padding: 20px 16px;
    text-align: center;
    color: var(--upq-text-muted);
}
.upq-welcome h4 {
    margin: 0 0 6px;
    color: var(--upq-text);
    font-size: 15px;
    font-weight: 600;
}
.upq-welcome p {
    margin: 0 0 14px;
    font-size: 13px;
    line-height: 1.5;
}
.upq-suggestions {
    display: flex;
    flex-direction: column;
    gap: 6px;
}
.upq-suggest-btn {
    background: #fff;
    border: 1px solid var(--upq-border);
    border-radius: 8px;
    padding: 8px 12px;
    font-size: 13px;
    color: var(--upq-text);
    cursor: pointer;
    text-align: left;
    transition: border-color 0.15s, background 0.15s;
    font-family: inherit;
    line-height: 1.4;
}
.upq-suggest-btn:hover {
    border-color: var(--upq-primary);
    background: var(--upq-primary-light);
}

/* Mobile --------------------------------------------------------------- */
@media (max-width: 480px) {
    .upq-panel {
        right: 12px;
        left: 12px;
        bottom: 82px;
        width: auto;
        max-width: none;
    }
    .upq-launcher { right: 16px; bottom: 16px; }
}