/* AI Chat Widget — ai-chat.css
 * Theme-compliant: uses --nav-bg/--nav-text for structural elements (header, toggle button)
 * and --button-bg/--button-text for action buttons.
 * --accent-color is only used for the user's own message bubble.
 */

.local-chat-widget {
    position: fixed;
    bottom: 20px;
    right: 20px;
    z-index: 9999;
    font-family: inherit;
}

/* Toggle button — matches site nav bar */
.chat-button {
    background-color: var(--nav-bg, #ccffff);
    color: var(--nav-text, var(--text-color, #000));
    border: 2px solid var(--nav-text, #333);
    border-radius: 50px;
    padding: 10px 20px;
    cursor: pointer;
    display: flex;
    align-items: center;
    box-shadow: 0 2px 8px rgba(0,0,0,0.35);
    font-family: inherit;
    position: relative;
    z-index: 10000;
}
.chat-button:hover { opacity: 0.9; }

.chat-icon {
    margin-right: 8px;
    font-size: 1.2em;
}

/* Chat panel container */
.chat-panel {
    position: fixed;
    bottom: 90px;
    right: 20px;
    width: 380px;
    min-width: 280px;
    max-width: 90vw;
    height: 500px;
    min-height: 300px;
    max-height: 90vh;
    background-color: var(--background-color, #fff);
    border-radius: 10px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.25);
    display: flex;
    flex-direction: column;
    font-family: inherit;
    z-index: 10001;
    overflow: hidden;
    border: 1px solid var(--border-color, #ccc);
}

/* Header — uses nav colours to match site navigation */
.chat-header {
    background-color: var(--nav-bg, #ccffff);
    color: var(--nav-text, var(--text-color, #000));
    padding: 8px 12px;
    border-top-left-radius: 10px;
    border-top-right-radius: 10px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 6px;
    flex-shrink: 0;
    border-bottom: 1px solid var(--border-color, #ccc);
}

.chat-header-drag {
    cursor: grab;
    font-size: 18px;
    opacity: 0.5;
    padding: 0 4px;
    user-select: none;
    letter-spacing: -2px;
    flex-shrink: 0;
}
.chat-header-drag:active { cursor: grabbing; }

.chat-header-title-group {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    justify-content: center;
    overflow: hidden;
}
.chat-header h3 {
    margin: 0;
    font-size: 14px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    color: var(--nav-text, var(--text-color, #000));
}
.chat-page-label {
    font-size: 10px;
    opacity: 0.65;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    color: var(--nav-text, var(--text-color, #000));
    line-height: 1.2;
}

.chat-header-buttons {
    display: flex;
    gap: 4px;
    align-items: center;
    flex-shrink: 0;
}

/* Icon buttons inside header — inherit nav text colour */
.chat-header-icon-btn {
    background: none;
    border: none;
    color: var(--nav-text, var(--text-color, #000));
    font-size: 15px;
    cursor: pointer;
    padding: 2px 5px;
    border-radius: 4px;
    opacity: 0.75;
    transition: opacity 0.15s, background 0.15s;
}
.chat-header-icon-btn:hover { opacity: 1; background: rgba(0,0,0,0.08); }
a.chat-header-icon-btn { display: inline-flex; align-items: center; text-decoration: none; line-height: 1; }

/* History drawer */
.widget-history-drawer {
    display: flex;
    flex-direction: column;
    background-color: var(--secondary-color, #f9f9f9);
    border-bottom: 1px solid var(--border-color, #ddd);
    max-height: 220px;
    overflow: hidden;
    flex-shrink: 0;
}
.widget-history-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 6px 10px;
    font-size: 12px;
    font-weight: 600;
    border-bottom: 1px solid var(--border-color, #ddd);
    flex-shrink: 0;
    color: var(--text-color, #333);
}
.widget-history-list {
    overflow-y: auto;
    padding: 4px;
    display: flex;
    flex-direction: column;
    gap: 2px;
}
.wh-item {
    width: 100%;
    text-align: left;
    background: transparent;
    border: none;
    border-radius: 5px;
    padding: 6px 8px;
    cursor: pointer;
    font-size: 12px;
    color: var(--text-color, #333);
    transition: background 0.15s;
}
.wh-item:hover { background: var(--secondary-color, #f0f0f0); }
.wh-item.active {
    background: var(--secondary-color, #f0f0f0);
    border-left: 3px solid var(--nav-bg, #ccffff);
}
.wh-title { font-weight: 500; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.wh-meta { font-size: 10px; opacity: 0.5; margin-top: 1px; }
.wh-loading, .wh-empty { text-align: center; padding: 12px; font-size: 12px; opacity: 0.5; }

/* Provider / model selector row */
.provider-selector {
    padding: 6px 12px;
    background-color: var(--secondary-color, #f5f5f5);
    border-bottom: 1px solid var(--border-color, #ddd);
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
}
.provider-selector label {
    font-weight: 600;
    color: var(--text-color, #444);
    white-space: nowrap;
}
.provider-selector select {
    flex-grow: 1;
    padding: 4px 8px;
    border: 1px solid var(--button-border, #ccc);
    border-radius: 4px;
    background-color: var(--background-color, #fff);
    color: var(--text-color, #333);
    cursor: pointer;
    font-size: 12px;
}

.conversation-selector {
    background: var(--background-color, #fff);
    border: 1px solid var(--button-border, #ccc);
    color: var(--text-color, #333);
    font-size: 12px;
    padding: 4px 8px;
    border-radius: 4px;
    cursor: pointer;
    max-width: 200px;
}

/* Manage API keys icon link — neutral button style */
.manage-keys-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    background: var(--button-bg, #f2f2f2);
    color: var(--button-text, #000);
    border: 1px solid var(--button-border, #ccc);
    border-radius: 4px;
    text-decoration: none;
    font-size: 14px;
    transition: opacity 0.2s;
}
.manage-keys-link:hover { opacity: 0.8; text-decoration: none; }

/* Nav-style buttons in header (new chat / close) */
#new-chat,
#close-chat {
    background: none;
    border: none;
    color: var(--nav-text, var(--text-color, #000));
    font-size: 15px;
    cursor: pointer;
    padding: 2px 5px;
    border-radius: 4px;
    opacity: 0.75;
}
#new-chat:hover, #close-chat:hover { opacity: 1; }
#close-chat { font-size: 18px; }

/* Message area */
.chat-messages {
    flex-grow: 1;
    padding: 10px 12px;
    overflow-y: auto;
    background-color: var(--background-color, #fff);
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.msg-wrapper { display: flex; flex-direction: column; max-width: 85%; gap: 2px; }
.msg-wrapper-user { align-self: flex-end; align-items: flex-end; }
.msg-wrapper-ai  { align-self: flex-start; align-items: flex-start; }
.msg-label {
    font-size: 10px;
    font-weight: 600;
    opacity: 0.6;
    padding: 0 4px;
    letter-spacing: 0.02em;
    color: var(--text-color, #333);
}

.message {
    padding: 8px 12px;
    border-radius: 18px;
    word-wrap: break-word;
    margin: 0;
    color: var(--text-color, #333);
}

.system-message {
    background-color: var(--secondary-color, #f5f5f5);
    color: var(--text-color, #333);
    align-self: flex-start;
    margin-right: auto;
    border-bottom-left-radius: 5px;
    border: 1px solid var(--border-color, #ddd);
}

/* User bubble uses nav colours to match site identity */
.user-message {
    background-color: var(--nav-bg, #ccffff);
    color: var(--nav-text, var(--text-color, #000));
    align-self: flex-end;
    margin-left: auto;
    border-bottom-right-radius: 5px;
    border: 1px solid var(--border-color, #ccc);
}

.ai-message {
    background-color: var(--secondary-color, #f0f4f8);
    color: var(--text-color, #222);
    align-self: flex-start;
    margin-right: auto;
    border-bottom-left-radius: 5px;
    border-left: 3px solid var(--nav-bg, #ccffff);
}

.ai-message.loading {
    color: var(--text-muted-color, #888);
    font-style: italic;
}

.error-message {
    background-color: #fff3f3;
    border: 1px solid var(--warning-color, #cc0000);
    color: var(--warning-color, #cc0000);
    align-self: center;
    margin: 5px auto;
    font-size: 0.9em;
}

/* Status bar */
.chat-status {
    padding: 5px 10px;
    font-size: 0.8em;
    text-align: center;
    background-color: var(--secondary-color, #fafafa);
    border-top: 1px solid var(--border-color, #ddd);
    color: var(--text-muted-color, #555);
}
.chat-status.connected { color: var(--success-color, #2e7d32); }
.chat-status.error     { color: var(--warning-color, #c62828); }
.chat-status.processing{ color: var(--info-color, #17a2b8); }

.loading-dots {
    display: inline-block;
    animation: loadingDots 1.5s infinite;
}
@keyframes loadingDots {
    0%, 20% { opacity: 0.2; }
    50%      { opacity: 1;   }
    100%     { opacity: 0.2; }
}

/* Input row */
.chat-input {
    padding: 10px;
    border-top: 1px solid var(--border-color, #ddd);
    display: flex;
    background-color: var(--secondary-color, #fafafa);
}

#message-input {
    flex-grow: 1;
    border: 1px solid var(--button-border, #ccc);
    border-radius: 4px;
    padding: 8px;
    resize: none;
    height: 40px;
    margin-right: 8px;
    background-color: var(--background-color, #fff);
    color: var(--text-color, #222);
    font-family: inherit;
}

/* Send button — uses standard button styles */
#send-message {
    background-color: var(--button-bg, #f2f2f2);
    color: var(--button-text, #000);
    border: 1px solid var(--button-border, #ccc);
    border-radius: 4px;
    padding: 8px 15px;
    cursor: pointer;
    font-family: inherit;
    transition: background 0.15s;
}
#send-message:hover    { background-color: var(--button-hover-bg, #e0e0e0); }
#send-message:disabled { opacity: 0.5; cursor: not-allowed; }

/* Resize handle */
.chat-resize-handle {
    position: absolute;
    bottom: 0;
    right: 0;
    width: 16px;
    height: 16px;
    cursor: se-resize;
    background: linear-gradient(135deg, transparent 50%, var(--border-color, #aaa) 50%);
    border-bottom-right-radius: 10px;
    opacity: 0.5;
    z-index: 10;
}
.chat-resize-handle:hover { opacity: 1; }

/* Retry button */
.chat-retry-btn {
    display: block;
    margin-top: 6px;
    padding: 4px 12px;
    border: 1px solid var(--button-border, #ccc);
    border-radius: 4px;
    background: var(--button-bg, #f5f5f5);
    color: var(--button-text, #333);
    cursor: pointer;
    font-size: 0.85em;
    font-family: inherit;
}
.chat-retry-btn:hover { background: var(--button-hover-bg, #e0e0e0); }

/* Web search citations */
.chat-citations {
    font-size: 0.82em;
    padding: 6px 10px;
    background: var(--secondary-color, #f9f9f9);
    border-top: 1px solid var(--border-color, #eee);
    border-radius: 0 0 8px 8px;
    color: var(--text-color, #333);
}
.chat-citations ul { margin: 4px 0 0; padding-left: 18px; }
.chat-citations li { margin: 2px 0; }

/* ── AI Thinking / Trace block ──────────────────────────────────────────── */
.ai-thinking {
    margin-top: 6px;
    border: 1px solid var(--border-color, #ccc);
    border-radius: 6px;
    font-size: 0.80em;
    font-family: monospace;
    background: var(--secondary-color, #f5f5f5);
    color: var(--text-color, #333);
    overflow: hidden;
}
.ai-thinking summary {
    padding: 5px 10px;
    cursor: pointer;
    background: var(--nav-bg, #e8e8e8);
    color: var(--nav-text, #333);
    border-radius: 6px 6px 0 0;
    user-select: none;
    font-family: inherit;
    list-style: none;
    display: flex;
    align-items: center;
    gap: 6px;
}
.ai-thinking summary::-webkit-details-marker { display: none; }
.ai-thinking[open] summary { border-radius: 6px 6px 0 0; }
.ai-thinking summary::before {
    content: '▶';
    font-size: 0.75em;
    transition: transform 0.2s;
}
.ai-thinking[open] summary::before { transform: rotate(90deg); }
.ai-thinking-body {
    padding: 8px 12px;
    border-top: 1px solid var(--border-color, #ccc);
}
.ai-thinking-step {
    padding: 2px 0;
    border-bottom: 1px dotted var(--border-color, #ddd);
    word-break: break-word;
    white-space: pre-wrap;
}
.ai-thinking-step:last-child { border-bottom: none; }

/* Live pre-send thinking block — shown while waiting for server response */
.ai-thinking-live {
    opacity: 0.75;
    border-style: dashed;
}
.ai-thinking-live summary {
    font-style: italic;
}