/* ============================================================================
 * FR-AI-CHAT: Global AI Chat Sidebar
 * Design system tokens only. Dark mode via [data-theme="dark"] inheritance.
 * ============================================================================ */

/* ---- Widget Container ---- */
.fr-ai-widget {
    position: fixed;
    bottom: 20px;
    right: 20px;
    z-index: 99990;
    font-family: var(--fr-font);
    font-size: 14px;
    line-height: 1.5;
    color: var(--fr-text);
}

/* ---- Collapsed Bar ---- */
.fr-ai-bar {
    display: flex;
    align-items: center;
    gap: 8px;
    background: var(--fr-card-bg);
    border: 1px solid var(--fr-border);
    border-radius: var(--fr-radius-pill);
    padding: 6px 8px 6px 14px;
    box-shadow: var(--fr-shadow-lg);
    cursor: pointer;
    transition: border-color 0.2s, box-shadow 0.2s;
    min-width: 420px;
    max-width: 620px;
}

.fr-ai-bar:hover {
    border-color: var(--fr-green);
    box-shadow: var(--fr-shadow-glow);
}

.fr-ai-bar-icon {
    color: var(--fr-green);
    flex-shrink: 0;
    display: flex;
    align-items: center;
}

.fr-ai-bar-label {
    font-size: 12px;
    font-weight: 700;
    color: var(--fr-green);
    white-space: nowrap;
    letter-spacing: 0.5px;
    text-transform: uppercase;
}

.fr-ai-bar-input {
    flex: 1;
    border: none;
    background: transparent;
    color: var(--fr-text);
    font-family: var(--fr-font);
    font-size: 13px;
    outline: none;
    padding: 4px 0;
    min-width: 0;
}

.fr-ai-bar-input::placeholder {
    color: var(--fr-text-muted);
    transition: opacity 0.3s;
}

.fr-ai-bar-send {
    flex-shrink: 0;
    width: 32px;
    height: 32px;
    padding: 0;
    border: none;
    background: var(--fr-green);
    color: #fff;
    border-radius: var(--fr-radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: background 0.2s, transform 0.15s;
}

.fr-ai-bar-send:hover {
    background: var(--fr-green-dark);
    transform: scale(1.05);
}

.fr-ai-bar-send:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

/* ---- Hide bar when panel is open ---- */
.fr-ai-open .fr-ai-bar {
    display: none;
}

/* ---- Expanded Panel ---- */
.fr-ai-panel {
    display: none;
    flex-direction: column;
    width: 620px;
    max-height: 75vh;
    background: var(--fr-card-bg);
    border: 1px solid var(--fr-border);
    border-radius: var(--fr-radius-lg);
    box-shadow: var(--fr-shadow-lg);
    overflow: hidden;
}

.fr-ai-open .fr-ai-panel {
    display: flex;
}

/* ---- Panel Headers (List + Chat modes) ---- */
.fr-ai-header-list,
.fr-ai-header-chat {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 16px;
    border-bottom: 1px solid var(--fr-border);
    border-top: 3px solid transparent;
    border-image: linear-gradient(90deg, var(--fr-green), var(--fr-green-light)) 1;
    flex-shrink: 0;
}

.fr-ai-panel-title {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 600;
    font-size: 15px;
    color: var(--fr-text);
}

.fr-ai-panel-title svg {
    color: var(--fr-green);
}

.fr-ai-panel-actions {
    display: flex;
    align-items: center;
    gap: 4px;
}

.fr-ai-clear-btn,
.fr-ai-close-btn,
.fr-ai-new-btn {
    width: 32px;
    height: 32px;
    padding: 0;
    border: none;
    background: transparent;
    color: var(--fr-text-muted);
    border-radius: var(--fr-radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: background 0.15s, color 0.15s;
}

.fr-ai-clear-btn:hover,
.fr-ai-close-btn:hover {
    background: var(--fr-bg);
    color: var(--fr-text);
}

.fr-ai-new-btn {
    color: var(--fr-green);
}

.fr-ai-new-btn:hover {
    background: var(--fr-green-bg);
    color: var(--fr-green);
}

.fr-ai-back-btn {
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
    color: var(--fr-text-muted);
    margin-right: 8px;
    display: flex;
    align-items: center;
    transition: color 0.15s;
}

.fr-ai-back-btn:hover {
    color: var(--fr-green) !important;
}

.fr-ai-conv-title {
    flex: 1;
    font-size: 14px;
    font-weight: 600;
    color: var(--fr-text);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* ---- Chat List (List mode) ---- */
.fr-ai-chat-list {
    flex: 1;
    overflow-y: auto;
    overflow-x: hidden;
    padding: 0;
}

.fr-ai-search-btn {
    width: 32px;
    height: 32px;
    padding: 0;
    border: none;
    background: transparent;
    color: var(--fr-text-muted);
    border-radius: var(--fr-radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: background 0.15s, color 0.15s;
}

.fr-ai-search-btn:hover {
    background: var(--fr-green-bg);
    color: var(--fr-green);
}

.fr-ai-search-row {
    padding: 8px 12px;
    border-bottom: 1px solid var(--fr-border);
    transition: max-height 0.2s ease, opacity 0.2s ease, padding 0.2s ease;
    overflow: hidden;
    max-height: 60px;
}

.fr-ai-search-row.hidden {
    max-height: 0;
    opacity: 0;
    padding: 0 12px;
    border-bottom: none;
}

.fr-ai-search {
    width: 100%;
    padding: 6px 10px;
    border: 1px solid var(--fr-border);
    border-radius: var(--fr-radius-sm);
    background: transparent;
    color: var(--fr-text);
    font-family: var(--fr-font);
    font-size: 12px;
    outline: none;
    box-sizing: border-box;
    transition: border-color 0.15s;
}

.fr-ai-search:focus {
    border-color: var(--fr-green);
}

.fr-ai-search::placeholder {
    color: var(--fr-text-muted);
}

.fr-ai-list-items {
    padding: 4px 0;
}

.fr-ai-chat-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 16px;
    cursor: pointer;
    border-left: 3px solid transparent;
    transition: background 0.15s;
}

.fr-ai-chat-item:hover {
    background: var(--fr-bg);
}

.fr-ai-chat-item-active {
    border-left-color: var(--fr-green);
    background: rgba(76, 175, 80, 0.05);
}

.fr-ai-chat-item-info {
    flex: 1;
    min-width: 0;
}

.fr-ai-chat-item-title {
    font-size: 13px;
    font-weight: 500;
    color: var(--fr-text);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.fr-ai-chat-item-time {
    font-size: 11px;
    color: var(--fr-text-muted);
    margin-top: 2px;
}

.fr-ai-chat-item-delete {
    opacity: 0;
    padding: 4px;
    background: none;
    border: none;
    cursor: pointer;
    color: var(--fr-red);
    transition: opacity 0.15s;
    flex-shrink: 0;
    display: flex;
    align-items: center;
}

.fr-ai-chat-item:hover .fr-ai-chat-item-delete {
    opacity: 1;
}

/* ---- Empty state ---- */
.fr-ai-empty-list {
    text-align: center;
    padding: 20px 16px 8px;
}

.fr-ai-empty-title {
    font-size: 15px;
    font-weight: 600;
    color: var(--fr-text);
    margin-bottom: 4px;
}

.fr-ai-empty-sub {
    font-size: 13px;
    color: var(--fr-text-muted);
}

.fr-ai-list-suggestions {
    padding: 8px 12px;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

/* ---- Chat list scrollbar ---- */
.fr-ai-chat-list::-webkit-scrollbar {
    width: 4px;
}

.fr-ai-chat-list::-webkit-scrollbar-track {
    background: transparent;
}

.fr-ai-chat-list::-webkit-scrollbar-thumb {
    background: var(--fr-border);
    border-radius: 2px;
}

.fr-ai-chat-list::-webkit-scrollbar-thumb:hover {
    background: var(--fr-text-muted);
}

/* ---- Messages Area ---- */
.fr-ai-messages {
    flex: 1;
    overflow-y: auto;
    overflow-x: hidden;
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    min-height: 200px;
}

/* ---- Welcome ---- */
.fr-ai-welcome {
    text-align: center;
    padding: 20px 10px;
}

.fr-ai-welcome-title {
    font-size: 18px;
    font-weight: 700;
    color: var(--fr-text);
    margin-bottom: 8px;
}

.fr-ai-welcome-sub {
    font-size: 13px;
    color: var(--fr-text-muted);
    line-height: 1.5;
}

/* ---- Suggestions ---- */
.fr-ai-suggestions {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.fr-ai-suggestion {
    display: block;
    width: 100%;
    text-align: left;
    padding: 10px 14px;
    background: var(--fr-bg);
    border: 1px solid var(--fr-border);
    border-radius: var(--fr-radius-md);
    color: var(--fr-text-secondary);
    font-family: var(--fr-font);
    font-size: 13px;
    cursor: pointer;
    transition: border-color 0.15s, background 0.15s, color 0.15s;
    line-height: 1.4;
}

.fr-ai-suggestion:hover {
    border-color: var(--fr-green);
    background: var(--fr-green-bg);
    color: var(--fr-text);
}

/* ---- Message Bubbles ---- */
.fr-ai-msg {
    display: flex;
    gap: 10px;
    max-width: 100%;
}

.fr-ai-msg-user {
    justify-content: flex-end;
}

.fr-ai-msg-user .fr-ai-msg-content {
    background: var(--fr-green);
    color: #fff;
    border-radius: var(--fr-radius-md) var(--fr-radius-md) 4px var(--fr-radius-md);
    padding: 10px 14px;
    max-width: 85%;
    word-wrap: break-word;
    font-size: 13px;
}

.fr-ai-msg-assistant {
    align-items: flex-start;
}

.fr-ai-msg-avatar {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: var(--fr-green-bg);
    color: var(--fr-green);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.fr-ai-msg-assistant .fr-ai-msg-content {
    background: var(--fr-bg);
    border: 1px solid var(--fr-border);
    border-radius: 4px var(--fr-radius-md) var(--fr-radius-md) var(--fr-radius-md);
    padding: 10px 14px;
    max-width: 85%;
    word-wrap: break-word;
    font-size: 13px;
    line-height: 1.6;
}

/* Markdown styles inside assistant messages */
.fr-ai-msg-assistant .fr-ai-msg-content h1,
.fr-ai-msg-assistant .fr-ai-msg-content h2,
.fr-ai-msg-assistant .fr-ai-msg-content h3,
.fr-ai-msg-assistant .fr-ai-msg-content h4 {
    margin: 10px 0 5px;
    font-weight: 600;
    color: var(--fr-text);
}

.fr-ai-msg-assistant .fr-ai-msg-content h1 { font-size: 1.3em; }
.fr-ai-msg-assistant .fr-ai-msg-content h2 { font-size: 1.2em; }
.fr-ai-msg-assistant .fr-ai-msg-content h3 { font-size: 1.1em; }

.fr-ai-msg-assistant .fr-ai-msg-content p {
    margin: 0 0 8px;
}

.fr-ai-msg-assistant .fr-ai-msg-content ul,
.fr-ai-msg-assistant .fr-ai-msg-content ol {
    margin: 0 0 8px;
    padding-left: 18px;
}

.fr-ai-msg-assistant .fr-ai-msg-content li {
    margin-bottom: 3px;
}

.fr-ai-msg-assistant .fr-ai-msg-content strong {
    font-weight: 600;
    color: var(--fr-text);
}

.fr-ai-msg-assistant .fr-ai-msg-content code {
    background: var(--fr-border);
    padding: 1px 5px;
    border-radius: 4px;
    font-family: var(--fr-font-mono);
    font-size: 12px;
}

.fr-ai-msg-assistant .fr-ai-msg-content a {
    color: var(--fr-green);
    text-decoration: none;
}

.fr-ai-msg-assistant .fr-ai-msg-content a:hover {
    text-decoration: underline;
    color: var(--fr-green-light) !important;
}

/* ---- Streaming Cursor ---- */
.fr-ai-cursor {
    display: inline-block;
    width: 2px;
    height: 16px;
    background: var(--fr-green);
    margin-left: 2px;
    vertical-align: text-bottom;
    animation: fr-ai-blink 0.8s step-end infinite;
}

@keyframes fr-ai-blink {
    50% { opacity: 0; }
}

/* ---- Tool Indicator ---- */
.fr-ai-tool-indicator {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    background: var(--fr-green-bg);
    border: 1px solid var(--fr-green-bg-strong);
    border-radius: var(--fr-radius-sm);
    color: var(--fr-green);
    font-size: 12px;
    font-weight: 500;
}

.fr-ai-tool-spinner {
    width: 14px;
    height: 14px;
    border: 2px solid var(--fr-green-bg-strong);
    border-top: 2px solid var(--fr-green);
    border-radius: 50%;
    animation: fr-ai-spin 0.8s linear infinite;
    flex-shrink: 0;
}

@keyframes fr-ai-spin {
    100% { transform: rotate(360deg); }
}

/* ---- Error ---- */
.fr-ai-error {
    color: var(--fr-red);
    font-size: 13px;
}

/* ---- Input Area ---- */
.fr-ai-input-area {
    border-top: 1px solid var(--fr-border);
    padding: 12px 16px;
    flex-shrink: 0;
}

.fr-ai-input-row {
    display: flex;
    align-items: flex-end;
    gap: 8px;
    background: var(--fr-bg);
    border: 1.5px solid var(--fr-border);
    border-radius: var(--fr-radius-md);
    padding: 8px 8px 8px 14px;
    transition: border-color 0.2s, box-shadow 0.2s;
    box-shadow: 0 -2px 8px rgba(0, 0, 0, 0.05);
}

.fr-ai-input-row:focus-within {
    border-color: var(--fr-green);
    box-shadow: 0 0 0 3px var(--fr-green-glow), 0 -2px 8px rgba(0, 0, 0, 0.05);
}

.fr-ai-input {
    flex: 1;
    border: none;
    background: transparent;
    color: var(--fr-text);
    font-family: var(--fr-font);
    font-size: 13px;
    line-height: 1.5;
    resize: none;
    outline: none;
    padding: 4px 0;
    min-height: 20px;
    max-height: 120px;
}

.fr-ai-input::placeholder {
    color: var(--fr-text-muted);
}

.fr-ai-send {
    flex-shrink: 0;
    width: 32px;
    height: 32px;
    padding: 0;
    border: none;
    background: var(--fr-green);
    color: #fff;
    border-radius: var(--fr-radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: background 0.2s, transform 0.15s;
}

.fr-ai-send:hover {
    background: var(--fr-green-dark);
    transform: scale(1.05);
}

.fr-ai-send:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

/* ---- Footer ---- */
.fr-ai-footer {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-top: 8px;
    flex-wrap: wrap;
}

.fr-ai-query-counter {
    font-size: 11px;
    color: var(--fr-text-muted);
}

.fr-ai-query-counter.fr-ai-limit-reached {
    color: var(--fr-orange);
}

.fr-ai-login-link {
    color: var(--fr-green) !important;
    text-decoration: none;
    font-weight: 500;
}

.fr-ai-login-link:hover {
    text-decoration: underline;
    color: var(--fr-green-light) !important;
}

.fr-ai-upgrade {
    font-size: 11px;
    font-weight: 600;
    color: #fff !important;
    background: var(--fr-green);
    padding: 2px 10px;
    border-radius: var(--fr-radius-pill);
    text-decoration: none;
    transition: background 0.15s;
}

.fr-ai-upgrade:hover {
    background: var(--fr-green-dark);
    color: #fff !important;
}

.fr-ai-disclaimer {
    font-size: 10px;
    color: var(--fr-text-muted);
    margin-left: auto;
}

/* ---- Hide widget when mobile menu is open ---- */
.fr-mobile-overlay.is-open ~ .fr-ai-widget {
    display: none !important;
}

/* ============================================================================
 * RESPONSIVE
 * ============================================================================ */

/* Tablet */
@media (max-width: 768px) {
    .fr-ai-widget {
        bottom: 12px;
        right: 12px;
        left: 12px;
    }

    .fr-ai-bar {
        max-width: none;
    }

    .fr-ai-panel {
        width: auto;
        max-height: 70vh;
    }
}

/* Mobile */
@media (max-width: 480px) {
    .fr-ai-widget {
        bottom: 0;
        right: 0;
        left: 0;
    }

    .fr-ai-bar {
        border-radius: 0;
        border-left: none;
        border-right: none;
        border-bottom: none;
        min-width: 0;
        max-width: none;
        border-top: 2px solid transparent;
        border-image: linear-gradient(90deg, var(--fr-green), var(--fr-green-light)) 1;
    }

    .fr-ai-bar-label {
        display: none;
    }

    .fr-ai-bar-input,
    .fr-ai-input,
    .fr-ai-search {
        font-size: 16px;
    }

    .fr-ai-panel {
        border-radius: 0;
        border: none;
        border-top: 1px solid var(--fr-border);
        max-height: 80vh;
        width: 100%;
    }

    .fr-ai-chat-item {
        padding: 10px 12px;
    }

    .fr-ai-suggestion {
        font-size: 12px;
        padding: 8px 12px;
    }

    .fr-ai-disclaimer {
        font-size: 9px;
    }
}

/* ============================================================================
 * SCROLLBAR (matches design system)
 * ============================================================================ */
.fr-ai-messages::-webkit-scrollbar {
    width: 4px;
}

.fr-ai-messages::-webkit-scrollbar-track {
    background: transparent;
}

.fr-ai-messages::-webkit-scrollbar-thumb {
    background: var(--fr-border);
    border-radius: 2px;
}

.fr-ai-messages::-webkit-scrollbar-thumb:hover {
    background: var(--fr-text-muted);
}