/**
 * Fullscreen Chat Interface Styles (ChatGPT-Style)
 *
 * Isolated styles for the fullscreen chat mode.
 * Designed to match the ChatGPT interface experience.
 * Does not affect the floating widget styles.
 *
 * LAYER STRUCTURE:
 * 1. Wrapper (.aichat-fullscreen-wrapper) - Forces fullscreen, hides page scroll
 * 2. Container (.aichat-fullscreen-container) - Main flex container
 * 3. Sidebar (.aichat-sidebar) - Left sidebar for conversations
 * 4. Main (.aichat-main) - Chat area
 * 5. Input (.aichat-input-wrapper) - Floating input at bottom
 *
 * CSS VARIABLES (Admin Customizable):
 * --fullscreen-bg: Main background color
 * --fullscreen-sidebar-bg: Sidebar background
 * --fullscreen-header-bg: Header background
 * --fullscreen-user-msg-bg: User message bubble background
 * --fullscreen-user-msg-text: User message text color
 * --fullscreen-ai-msg-bg: AI message bubble background
 * --fullscreen-ai-msg-text: AI response text color
 * --fullscreen-input-bg: Input box background
 * --fullscreen-input-border: Input box border color
 * --fullscreen-input-text: Input text color
 * --fullscreen-send-btn-bg: Send button background
 * --fullscreen-send-btn-icon: Send button icon color
 * --fullscreen-tool-bg: Tool container background
 * --fullscreen-tool-header-bg: Tool header background
 * --fullscreen-tool-border: Tool border color
 * --fullscreen-tool-width: Default tool width as percentage of chat column
 * --fullscreen-timestamp-color: Timestamp text color
 *
 * @package AIChatbot
 * @since 1.0.0
 */

/* ==========================================
   CSS Variables - Default values
   These can be overridden via inline styles from settings
   ========================================== */

.aichat-fullscreen-wrapper {
    /* Main backgrounds (widget-style, light by default) */
    --fullscreen-bg: #f8f9fa;
    --fullscreen-sidebar-bg: #202123;
    --fullscreen-header-bg: transparent;
    --fullscreen-header-text: #111111;
    
    /* Message colors (reusing widget defaults) */
    --fullscreen-user-msg-bg: #2271b1;
    --fullscreen-user-msg-text: #ffffff;
    --fullscreen-ai-msg-bg: #f0f2f5;
    --fullscreen-ai-msg-text: #1a1a1a;
    
    /* Input colors */
    --fullscreen-input-bg: #ffffff;
    --fullscreen-input-border: #e2e8f0;
    --fullscreen-input-text: #1a1a1a;
    --fullscreen-input-placeholder: #6b7280;
    
    /* Send button */
    --fullscreen-send-btn-bg: #2271b1;
    --fullscreen-send-btn-icon: #ffffff;
    
    /* Tool colors (interactive-tools light theme) */
    --fullscreen-tool-bg: #f9f9f9;
    --fullscreen-tool-header-bg: #f2f2f2;
    --fullscreen-tool-border: #dddddd;
    --fullscreen-tool-text: #333333;
    
    /* Misc */
    --fullscreen-timestamp-color: #777777;
    --fullscreen-border-color: #e2e8f0;
    --fullscreen-tool-width: 40%;
    --fullscreen-sidebar-text: #ffffff;
}

/* ==========================================
   Layer 1: Wrapper - Forces true fullscreen
   Hides page scrollbar, takes over viewport
   ========================================== */

.aichat-fullscreen-wrapper {
    position: fixed !important;
    top: 0 !important;
    left: 0 !important;
    right: 0 !important;
    bottom: 0 !important;
    width: 100vw !important;
    height: 100vh !important;
    z-index: 99999 !important;
    overflow: hidden !important;
    margin: 0 !important;
    padding: 0 !important;
}

/* Hide page scrollbar when fullscreen is active */
body.aichat-fullscreen-active {
    overflow: hidden !important;
}

/* ==========================================
   Reset - Remove ALL inherited styles
   ========================================== */

.aichat-fullscreen-wrapper,
.aichat-fullscreen-wrapper *,
.aichat-fullscreen-wrapper *::before,
.aichat-fullscreen-wrapper *::after {
    box-sizing: border-box !important;
}

/* Note: Removed 'all: unset' as it was breaking tool containers */

/* ==========================================
   Layer 2: Container - Main flex layout
   ========================================== */

.aichat-fullscreen-container {
    display: flex !important;
    height: 100% !important;
    width: 100% !important;
    background: var(--fullscreen-bg) !important;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen-Sans, Ubuntu, Cantarell, "Helvetica Neue", sans-serif !important;
    position: relative !important;
    overflow: hidden !important;
    color: var(--fullscreen-ai-msg-text) !important;
    margin: 0 !important;
    padding: 0 !important;
}

/* ==========================================
   Sidebar
   ========================================== */

.aichat-sidebar {
    width: 260px;
    min-width: 260px;
    background: var(--fullscreen-sidebar-bg) !important;
    color: var(--fullscreen-sidebar-text, #ffffff);
    display: flex;
    flex-direction: column;
    transition: transform 0.3s ease;
    overflow: hidden;
    flex-shrink: 0;
    border-right: 1px solid var(--fullscreen-border-color);
}

/* Sidebar collapsed - slide out but maintain width for re-expansion */
.aichat-sidebar-collapsed .aichat-sidebar {
    transform: translateX(-100%);
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    z-index: 50;
}

/* Show sidebar expand button when collapsed */
.aichat-sidebar-expand-btn {
    display: none;
    position: absolute;
    top: 4px;
    left: 16px;
    z-index: 100;
    background: #ffffff;
    border: 1px solid var(--fullscreen-border-color);
    color: #111111;
    padding: 6px 10px;
    border-radius: 999px;
    cursor: pointer;
    font-size: 14px;
    box-shadow: 0 2px 6px rgba(15, 23, 42, 0.12);
    transition: background 0.2s ease, box-shadow 0.2s ease, color 0.2s ease;
}

.aichat-sidebar-expand-btn:hover {
    background: #f3f4f6;
    color: #111111;
    box-shadow: 0 3px 10px rgba(15, 23, 42, 0.16);
}

.aichat-sidebar-expand-btn .dashicons {
    font-size: 20px;
    width: 20px;
    height: 20px;
    line-height: 20px;
}

.aichat-sidebar-collapsed .aichat-sidebar-expand-btn {
    display: flex;
    align-items: center;
    justify-content: center;
}

.aichat-sidebar-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px;
    border-bottom: 1px solid rgba(0, 0, 0, 0.06);
}

.aichat-sidebar-new-chat {
    display: flex;
    align-items: center;
    gap: 8px;
    background: transparent;
    border: 1px solid rgba(0, 0, 0, 0.1);
    border-radius: 6px;
    color: var(--fullscreen-sidebar-text, #111111);
    padding: 10px 14px;
    cursor: pointer;
    font-size: 14px;
    transition: background 0.2s ease, border-color 0.2s ease;
    flex: 1;
    margin-right: 8px;
}

.aichat-sidebar-new-chat:hover {
    background: rgba(0, 0, 0, 0.04);
    border-color: rgba(0, 0, 0, 0.18);
}

.aichat-sidebar-new-chat .dashicons {
    font-size: 16px;
    width: 16px;
    height: 16px;
}

.aichat-sidebar-toggle {
    background: transparent;
    border: none;
    color: rgba(0, 0, 0, 0.6);
    cursor: pointer;
    padding: 8px;
    border-radius: 4px;
    transition: background 0.2s ease, color 0.2s ease;
}

.aichat-sidebar-toggle:hover {
    background: rgba(0, 0, 0, 0.06);
    color: var(--fullscreen-sidebar-text, #111111);
}

.aichat-sidebar-toggle .dashicons {
    font-size: 18px;
    width: 18px;
    height: 18px;
}

/* Rotate arrow when collapsed */
.aichat-sidebar-collapsed .aichat-sidebar-toggle .dashicons {
    transform: rotate(180deg);
}

/* Sidebar Conversations List */
.aichat-sidebar-conversations {
    flex: 1;
    overflow-y: auto;
    padding: 8px;
}

.aichat-sidebar-loading {
    display: flex;
    justify-content: center;
    padding: 20px;
    color: rgba(0, 0, 0, 0.5);
}

.aichat-sidebar-loading .dashicons.spin {
    animation: aichat-spin 1s linear infinite;
}

@keyframes aichat-spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* Conversation Item */
.aichat-sidebar-conversation {
    display: flex;
    align-items: center;
    padding: 10px 12px;
    border-radius: 6px;
    cursor: pointer;
    transition: background 0.2s ease;
    margin-bottom: 2px;
    color: var(--fullscreen-sidebar-text, #111111);
    font-size: 14px;
    text-overflow: ellipsis;
    white-space: nowrap;
    overflow: hidden;
}

.aichat-sidebar-conversation:hover {
    background: rgba(0, 0, 0, 0.04);
}

.aichat-sidebar-conversation.active {
    background: rgba(0, 0, 0, 0.08);
}

.aichat-sidebar-conversation-title {
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.aichat-sidebar-conversation-delete {
    opacity: 0;
    background: transparent;
    border: none;
    color: rgba(255, 255, 255, 0.5);
    cursor: pointer;
    padding: 4px;
    border-radius: 4px;
    transition: opacity 0.2s ease, color 0.2s ease;
}

.aichat-sidebar-conversation:hover .aichat-sidebar-conversation-delete {
    opacity: 1;
}

.aichat-sidebar-conversation-delete:hover {
    color: #ff6b6b;
}

/* Sidebar Footer */
.aichat-sidebar-footer {
    padding: 12px;
    border-top: 1px solid rgba(0, 0, 0, 0.06);
}

.aichat-sidebar-user {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.7);
    display: flex;
    align-items: center;
    gap: 8px;
}

/* ==========================================
   Mobile Sidebar Toggle
   ========================================== */

.aichat-mobile-sidebar-toggle {
    display: none;
    position: absolute;
    top: 12px;
    left: 12px;
    z-index: 100;
    background: var(--sidebar-bg, #202123);
    border: none;
    color: #fff;
    padding: 10px;
    border-radius: 6px;
    cursor: pointer;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.aichat-mobile-sidebar-toggle .dashicons {
    font-size: 20px;
    width: 20px;
    height: 20px;
}

/* ==========================================
   Main Chat Area - Takes remaining space
   ========================================== */

.aichat-main {
    flex: 1;
    display: flex;
    flex-direction: column;
    width: 100%;
    position: relative;
    overflow: hidden;
}

/* ==========================================
   Fullscreen Header - Minimal, top bar
   ========================================== */

.aichat-fullscreen-header {
    display: flex;
    align-items: center;
    justify-content: flex-start;
    padding: 12px 20px;
    position: relative;
    flex-shrink: 0;
    border-bottom: 1px solid var(--fullscreen-border-color);
    z-index: 60;
}

/* Reserve space for the expand (hamburger) button when sidebar is collapsed */
.aichat-sidebar-collapsed .aichat-fullscreen-header {
    padding-left: 80px;
}

.aichat-fullscreen-title {
    font-size: 16px;
    font-weight: 600;
    color: var(--fullscreen-header-text, #111111);
    margin: 0;
    letter-spacing: 0.02em;
}

.aichat-fullscreen-credits {
    position: absolute;
    right: 20px;
    font-size: 13px;
    color: #8e8e8e;
}

/* ==========================================
   Layer 4: Messages Container - Scrollable area
   Content centered, scrolls under input
   ========================================== */

.aichat-fullscreen-container .aichat-messages {
    flex: 1 !important;
    display: flex !important;
    flex-direction: column !important;
    overflow-y: auto !important;
    overflow-x: hidden !important;
    padding: 20px 0 120px 0 !important; /* Bottom padding for floating input */
    background: transparent !important;
    margin: 0 !important;
    
    /* Smooth scrolling */
    scroll-behavior: smooth;
    
    /* Thin scrollbar (ChatGPT style) */
    scrollbar-width: thin;
    scrollbar-color: #424242 transparent;
}

/* Bottom anchoring: push first message down when there is extra vertical space */
.aichat-fullscreen-container .aichat-messages > :first-child {
    margin-top: auto !important;
}

.aichat-fullscreen-container .aichat-messages::-webkit-scrollbar {
    width: 6px;
}

.aichat-fullscreen-container .aichat-messages::-webkit-scrollbar-track {
    background: transparent;
}

.aichat-fullscreen-container .aichat-messages::-webkit-scrollbar-thumb {
    background: #424242;
    border-radius: 3px;
}

.aichat-fullscreen-container .aichat-messages::-webkit-scrollbar-thumb:hover {
    background: #555;
}

/* ==========================================
   Message Styling - Uses CSS Variables
   ========================================== */

/* Base message styling */
.aichat-fullscreen-container .aichat-message {
    display: flex !important;
    flex-direction: column !important;
    max-width: 768px !important;
    width: 100% !important;
    margin: 0 auto 16px auto !important;
    padding: 0 24px !important;
    background: transparent !important;
    border: none !important;
    border-radius: 0 !important;
    box-shadow: none !important;
}

/* Structured error bubble in fullscreen should keep its gradient/bar styling */
.aichat-fullscreen-container .aichat-message.aichat-error-message {
    max-width: 768px !important;
    width: 100% !important;
    /* Match widget gradient while overriding the transparent fullscreen base */
    background: linear-gradient(180deg, #fee2e2 0%, #fecaca 100%) !important;
    color: #111827 !important;
    border: 1px solid #fca5a5 !important;
    border-radius: 4px 4px 0 0 !important;
    padding: 10px 16px 12px !important;
    margin: 16px auto 0 auto !important;
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.08) !important;
}

/* User messages - bubble, right aligned */
.aichat-fullscreen-container .aichat-message.aichat-user {
    align-items: flex-end !important;
}

/* Support both legacy <p> markup and wrapped .aichat-message-content markup */
.aichat-fullscreen-container .aichat-message.aichat-user > p,
.aichat-fullscreen-container .aichat-message.aichat-user .aichat-message-content {
    background: var(--fullscreen-user-msg-bg) !important;
    border-radius: 18px !important;
    padding: 12px 18px !important;
    max-width: 80% !important;
    color: var(--fullscreen-user-msg-text) !important;
    font-size: 15px !important;
    line-height: 1.5 !important;
}

.aichat-fullscreen-container .aichat-message.aichat-user > p,
.aichat-fullscreen-container .aichat-message.aichat-user .aichat-message-content,
.aichat-fullscreen-container .aichat-message.aichat-user .aichat-message-content * {
    color: var(--fullscreen-user-msg-text) !important;
}

/* Assistant messages - bubble, left aligned */
.aichat-fullscreen-container .aichat-message.aichat-assistant {
    align-items: flex-start !important;
}

.aichat-fullscreen-container .aichat-message.aichat-assistant > p,
.aichat-fullscreen-container .aichat-message.aichat-assistant .aichat-message-content {
    background: var(--fullscreen-ai-msg-bg) !important;
    border-radius: 18px !important;
    padding: 12px 18px !important;
    max-width: 80% !important;
    color: var(--fullscreen-ai-msg-text) !important;
    font-size: 16px !important;
    line-height: 1.7 !important;
}

.aichat-fullscreen-container .aichat-message.aichat-assistant > p,
.aichat-fullscreen-container .aichat-message.aichat-assistant .aichat-message-content,
.aichat-fullscreen-container .aichat-message.aichat-assistant .aichat-message-content * {
    color: var(--fullscreen-ai-msg-text) !important;
}

.aichat-fullscreen-container .aichat-message.aichat-assistant .aichat-message-content p {
    margin: 0 0 12px 0 !important;
}

.aichat-fullscreen-container .aichat-message.aichat-assistant .aichat-message-content p:last-child {
    margin-bottom: 0 !important;
}

/* Message timestamps - below the message content */
.aichat-fullscreen-container .aichat-message .aichat-message-timestamp,
.aichat-fullscreen-container .aichat-message .aichat-timestamp {
    display: block !important;
    font-size: 11px !important;
    color: var(--fullscreen-timestamp-color) !important;
    margin-top: 6px !important;
    text-align: right !important;
    width: 100% !important;
}


.aichat-fullscreen-container .aichat-message.aichat-assistant .aichat-message-timestamp,
.aichat-fullscreen-container .aichat-message.aichat-assistant .aichat-timestamp {
    text-align: left !important;
}

/* Typing indicator styling in fullscreen - sits just above the input box */
.aichat-fullscreen-container .aichat-typing {
    background: transparent !important;
    color: var(--fullscreen-ai-msg-text) !important;
    padding: 0 !important;
    margin: 0 auto 8px auto !important; /* space above input */
    max-width: 768px !important;
    width: 100% !important;
    display: flex !important;
    flex-direction: row !important;
    align-items: center !important;
    justify-content: center !important;
    pointer-events: none !important;
}

.aichat-fullscreen-container.aichat-typing-align-left .aichat-typing {
    justify-content: flex-start !important;
    padding-left: 24px !important;
}

.aichat-fullscreen-container .typing-indicator {
    background: var(--fullscreen-ai-msg-bg) !important;
    border-radius: 999px !important;
    padding: 4px 10px !important;
}

.aichat-fullscreen-container .aichat-typing .typing-text,
.aichat-fullscreen-container .typing-indicator .typing-text {
    color: var(--fullscreen-ai-msg-text) !important;
}

.aichat-fullscreen-container .typing-dots span {
    background: var(--fullscreen-ai-msg-text) !important;
}

/* ==========================================
   Tool Containers - Use inner card for width & background
   ========================================== */

/* Outer message row stays aligned with other messages */
.aichat-fullscreen-container .aichat-message.aichat-tool-container {
    align-items: flex-start !important;
    padding: 0 24px !important;
    background: transparent !important;
    border: none !important;
    box-shadow: none !important;
}

/* Inner card controls actual visual width and styling */
.aichat-fullscreen-container .aichat-message.aichat-tool-container .aichat-tool-inner {
    width: var(--fullscreen-tool-width, 40%) !important;
    max-width: 500px !important;
    background: var(--fullscreen-tool-bg) !important;
    border: 1px solid var(--fullscreen-tool-border) !important;
    border-radius: 12px !important;
    box-shadow: none !important;
    overflow: hidden !important;
}

/* Width variants, controlled via tool behavior (aichat-tool-width-*) */
.aichat-fullscreen-container .aichat-message.aichat-tool-container.aichat-tool-width-medium .aichat-tool-inner {
    width: 60% !important;
}

.aichat-fullscreen-container .aichat-message.aichat-tool-container.aichat-tool-width-full .aichat-tool-inner {
    width: 100% !important;
    max-width: none !important;
}

.aichat-fullscreen-container .aichat-tool-container * {
    color: var(--fullscreen-tool-text) !important;
}

.aichat-fullscreen-container .aichat-tool-container .aichat-tool-header,
.aichat-fullscreen-container .aichat-tool-container > div:first-child {
    background: var(--fullscreen-tool-header-bg) !important;
    border-bottom: 1px solid var(--fullscreen-tool-border) !important;
    padding: 12px 16px !important;
    margin: 0 !important;
}

.aichat-fullscreen-container .aichat-tool-container .aichat-tool-header h3,
.aichat-fullscreen-container .aichat-tool-container h3 {
    color: var(--fullscreen-tool-text) !important;
    font-size: 14px !important;
    font-weight: 600 !important;
    margin: 0 0 4px 0 !important;
}

.aichat-fullscreen-container .aichat-tool-container .aichat-tool-description,
.aichat-fullscreen-container .aichat-tool-container p.aichat-tool-description {
    color: var(--fullscreen-timestamp-color) !important;
    font-size: 13px !important;
    margin: 0 !important;
}

.aichat-fullscreen-container .aichat-tool-container .aichat-tool-form,
.aichat-fullscreen-container .aichat-tool-container form {
    padding: 16px !important;
    background: var(--fullscreen-tool-bg) !important;
}

/* Form elements in tools */
.aichat-fullscreen-container .aichat-tool-container input[type="text"],
.aichat-fullscreen-container .aichat-tool-container input[type="number"],
.aichat-fullscreen-container .aichat-tool-container input[type="email"],
.aichat-fullscreen-container .aichat-tool-container select,
.aichat-fullscreen-container .aichat-tool-container textarea {
    background: var(--fullscreen-bg) !important;
    border: 1px solid var(--fullscreen-tool-border) !important;
    color: var(--fullscreen-tool-text) !important;
    border-radius: 8px !important;
    padding: 10px 12px !important;
    width: 100% !important;
    font-size: 14px !important;
}

.aichat-fullscreen-container .aichat-tool-container input:focus,
.aichat-fullscreen-container .aichat-tool-container select:focus,
.aichat-fullscreen-container .aichat-tool-container textarea:focus {
    border-color: #6b6b6b !important;
    outline: none !important;
    box-shadow: 0 0 0 2px rgba(107, 107, 107, 0.2) !important;
}

.aichat-fullscreen-container .aichat-tool-container label {
    display: block !important;
    color: var(--fullscreen-tool-text) !important;
    font-size: 14px !important;
    font-weight: 500 !important;
    margin-bottom: 6px !important;
}

.aichat-fullscreen-container .aichat-tool-container .description,
.aichat-fullscreen-container .aichat-tool-container .field-description {
    color: var(--fullscreen-timestamp-color) !important;
    font-size: 12px !important;
    margin-top: 4px !important;
}

/* Tool buttons */
.aichat-fullscreen-container .aichat-tool-container button[type="submit"],
.aichat-fullscreen-container .aichat-tool-container .submit-btn {
    background: var(--fullscreen-send-btn-bg) !important;
    border: none !important;
    color: var(--fullscreen-send-btn-icon) !important;
    padding: 10px 20px !important;
    border-radius: 6px !important;
    font-size: 14px !important;
    font-weight: 500 !important;
    cursor: pointer !important;
    transition: background 0.2s ease !important;
}

.aichat-fullscreen-container .aichat-tool-container button[type="submit"]:hover,
.aichat-fullscreen-container .aichat-tool-container .submit-btn:hover {
    background: #0d8a6a !important;
}

.aichat-fullscreen-container .aichat-tool-container button[type="button"],
.aichat-fullscreen-container .aichat-tool-container .cancel-btn {
    background: #424242 !important;
    border: none !important;
    color: #ececec !important;
    padding: 10px 20px !important;
    border-radius: 6px !important;
    font-size: 14px !important;
    cursor: pointer !important;
}

.aichat-fullscreen-container .aichat-tool-container button[type="button"]:hover,
.aichat-fullscreen-container .aichat-tool-container .cancel-btn:hover {
    background: #555 !important;
}

/* Checkbox styling */
.aichat-fullscreen-container .aichat-tool-container input[type="checkbox"] {
    width: auto !important;
    margin-right: 8px !important;
}

/* ==========================================
   Layer 5: Input Area - Floating at bottom
   Uses CSS Variables for customization
   ========================================== */

.aichat-fullscreen-container .aichat-input-wrapper {
    position: absolute !important;
    bottom: 0 !important;
    left: 0 !important;
    right: 0 !important;
    padding: 16px 24px 32px 24px !important;
    /* Very soft shadow at the bottom for floating feel, no hard edge */
    background: linear-gradient(to top, rgba(0, 0, 0, 0.08) 0%, transparent 60%) !important;
    z-index: 10 !important;
    margin: 0 !important;
}

.aichat-fullscreen-container .aichat-input {
    display: flex !important;
    align-items: flex-end !important;
    background: var(--fullscreen-input-bg) !important;
    border: 1px solid var(--fullscreen-input-border) !important;
    border-radius: 24px !important;
    padding: 12px 16px !important;
    max-width: 768px !important;
    margin: 0 auto !important;
    transition: border-color 0.2s ease, box-shadow 0.2s ease !important;
}

.aichat-fullscreen-container .aichat-input:focus-within {
    border-color: #6b6b6b !important;
    box-shadow: 0 0 0 2px rgba(107, 107, 107, 0.2) !important;
}

.aichat-fullscreen-container .aichat-input textarea {
    flex: 1 !important;
    border: none !important;
    outline: none !important;
    resize: none !important;
    font-size: 16px !important;
    line-height: 1.5 !important;
    min-height: 24px !important;
    background: transparent !important;
    font-family: inherit !important;
    color: var(--fullscreen-input-text) !important;
    overflow-y: auto !important;
}

.aichat-fullscreen-container .aichat-input textarea::placeholder {
    color: var(--fullscreen-input-placeholder) !important;
}

.aichat-fullscreen-container .aichat-send {
    background: var(--fullscreen-send-btn-bg) !important;
    border: none !important;
    border-radius: 50% !important;
    width: 32px !important;
    height: 32px !important;
    padding: 0 !important;
    cursor: pointer !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    transition: background 0.2s ease, opacity 0.2s ease !important;
    margin-left: 8px !important;
    flex-shrink: 0 !important;
}

.aichat-fullscreen-container .aichat-send.aichat-stop-active {
    background: #d63638 !important;
}

.aichat-fullscreen-container .aichat-send:hover {
    opacity: 0.9 !important;
}

.aichat-fullscreen-container .aichat-send:disabled {
    opacity: 0.5 !important;
    cursor: not-allowed !important;
}

.aichat-fullscreen-container .aichat-send svg {
    fill: var(--fullscreen-send-btn-icon) !important;
    width: 16px !important;
    height: 16px;
}

.aichat-fullscreen-container .aichat-send.aichat-stop-active svg,
.aichat-fullscreen-container .aichat-send.aichat-stop-active svg path {
    fill: #ffffff !important;
}

.aichat-input-disclaimer {
    font-size: 12px;
    color: #8e8e8e;
    text-align: center;
    margin: 8px auto 0 auto;
    max-width: 768px;
}

/* ==========================================
   Responsive Styles
   ========================================== */

@media (max-width: 768px) {
    /* Sidebar becomes overlay on mobile */
    .aichat-sidebar {
        position: absolute;
        left: 0;
        top: 0;
        bottom: 0;
        z-index: 99;
    }
    
    .aichat-sidebar-collapsed .aichat-sidebar {
        transform: translateX(-100%);
    }
    
    /* Overlay backdrop when sidebar is open on mobile */
    .aichat-fullscreen-container:not(.aichat-sidebar-collapsed)::after {
        content: '';
        position: absolute;
        top: 0;
        left: 260px;
        right: 0;
        bottom: 0;
        background: rgba(0, 0, 0, 0.5);
        z-index: 98;
    }
    
    /* Messages padding adjustment */
    .aichat-fullscreen-container .aichat-message {
        padding: 0 16px;
    }
    
    .aichat-fullscreen-container .aichat-user {
        margin-right: 16px;
    }
    
    /* Input padding */
    .aichat-input-wrapper {
        padding: 12px 16px 20px 16px;
    }
    
    .aichat-fullscreen-container .aichat-input {
        border-radius: 20px;
    }
}

@media (max-width: 480px) {
    .aichat-fullscreen-container .aichat-input textarea {
        font-size: 15px;
    }
    
    .aichat-fullscreen-container .aichat-message {
        padding: 0 12px;
    }

    .aichat-fullscreen-container .aichat-message.aichat-tool-container .aichat-tool-inner {
        width: 100% !important;
        max-width: 100% !important;
    }
}

/* ==========================================
   Welcome State - Centered content
   ========================================== */

.aichat-fullscreen-container .aichat-welcome {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 200px;
    text-align: center;
    padding: 40px 24px;
}

.aichat-fullscreen-container .aichat-welcome h2 {
    font-size: 28px;
    font-weight: 600;
    color: #ececec;
    margin: 0 0 16px 0;
}

.aichat-fullscreen-container .aichat-welcome p {
    font-size: 16px;
    color: #8e8e8e;
    margin: 0;
}

/* Trigger phrases in fullscreen */
.aichat-fullscreen-container .aichat-triggers-container {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    justify-content: center;
    max-width: 600px;
    margin: 24px auto;
    padding: 0 24px;
}

.aichat-fullscreen-container .aichat-trigger-chip {
    background: #2f2f2f;
    border: 1px solid #424242;
    color: #ececec;
    padding: 10px 16px;
    border-radius: 20px;
    font-size: 14px;
    cursor: pointer;
    transition: background 0.2s ease, border-color 0.2s ease;
}

.aichat-fullscreen-container .aichat-trigger-chip:hover {
    background: #424242;
    border-color: #555;
}

/* Last chat summary card in fullscreen */
.aichat-fullscreen-container .aichat-last-summary-card {
    background: #2f2f2f;
    border: 1px solid #424242;
    border-radius: 12px;
    padding: 16px 20px;
    max-width: 400px;
    margin: 16px auto;
}

.aichat-fullscreen-container .aichat-last-summary-card .summary-title {
    font-size: 16px;
    font-weight: 600;
    color: #ececec;
    margin-bottom: 8px;
}

.aichat-fullscreen-container .aichat-last-summary-card .summary-excerpt {
    font-size: 14px;
    color: #8e8e8e;
    margin-bottom: 12px;
}

.aichat-fullscreen-container .aichat-last-summary-card .summary-resume-btn {
    background: #10a37f;
    border: none;
    color: #fff;
    padding: 8px 16px;
    border-radius: 6px;
    font-size: 14px;
    cursor: pointer;
    transition: background 0.2s ease;
}

.aichat-fullscreen-container .aichat-last-summary-card .summary-resume-btn:hover {
    background: #0d8a6a;
}

/**
 * Tool Loading Placeholder - Fullscreen Mode
 * Ensures the loading placeholder matches fullscreen theme
 */
.aichat-fullscreen-container .aichat-tool-loading-placeholder {
    background: var(--fullscreen-tool-bg, #f8f9fa) !important;
    border: 1px dashed var(--fullscreen-tool-border, #dee2e6) !important;
    border-radius: 12px !important;
    padding: 20px !important;
    margin: 12px 0 !important;
}

.aichat-fullscreen-container .aichat-tool-loading-indicator {
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    gap: 12px !important;
}

.aichat-fullscreen-container .aichat-tool-loading-spin {
    color: var(--fullscreen-accent, #4a90e2) !important;
}

.aichat-fullscreen-container .aichat-tool-loading-text {
    color: var(--fullscreen-tool-text, #666) !important;
    font-size: 14px !important;
}