/* ==========================================================================
   CHATBOT - Hero Chat Interface
   ========================================================================== */

/* Chat Container - Centered in hero */
.hero-chat {
    width: 100%;
    max-width: 384px;
    margin: 0 auto;
    padding-bottom: 16px;
    position: relative;
    z-index: 101;
    transition: max-width 0.3s ease;
    display: flex;
    flex-direction: column;
    align-items: center;
    overflow-anchor: none;
}

/* Hidden state - for non-homepage pages until triggered */
.hero-chat.is-hidden {
    display: none;
}

/* Expanded state - width only, stays in hero */
.hero-chat.is-expanded {
    max-width: 768px;
}

/* Chat open state - fixed position in viewport */
.hero-chat.is-chat-open {
    position: fixed;
    bottom: 20%;
    left: 50%;
    transform: translateX(-50%);
    width: 768px;
    max-width: calc(100% - 32px);
    margin: 0;
    z-index: 102;
}

/* Full active state - fixed position (legacy, not currently used) */
.hero-chat.is-active {
    position: fixed;
    bottom: var(--spacing-8);
    left: 50%;
    transform: translateX(-50%);
    max-width: 768px;
    margin: 0;
    z-index: 102;
}

/* Input area wrapper - positioning context for messages */
.chat-input-area {
    position: relative;
    width: 100%;
}

/* Full-screen blur overlay when chat is active */
.chat-blur-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    z-index: 100;
    cursor: pointer;
}

.chat-blur-overlay.is-active {
    display: block;
}

/* Light theme: white blur overlay */
[data-theme="light"] .chat-blur-overlay {
    background: rgba(255, 255, 255, 0.7);
}

/* Conversation Messages Container - positioned above chat input */
.chat-messages {
    display: none;
    flex-direction: column;
    gap: var(--spacing-3);
    overflow-y: auto;
    overflow-x: hidden;
    padding: var(--spacing-6) 16px var(--spacing-3) 0;
    background: transparent;
    border: none;
    scroll-behavior: smooth;
    /* Absolute positioning relative to chat-input-area */
    position: absolute;
    bottom: calc(100% + 12px);
    left: 0;
    right: 0;
    /* Height calculated: viewport - 16px top margin - space for chat input area (~180px) */
    max-height: calc(100vh - 16px - 180px);
    z-index: 10;
    /* Fade out at top */
    -webkit-mask-image: linear-gradient(to bottom, transparent 0%, black 48px);
    mask-image: linear-gradient(to bottom, transparent 0%, black 48px);
}

.chat-messages.is-active {
    display: flex;
}

/* Chat form wrapper - stays in place */
.chat-form {
    position: relative;
    z-index: 1;
}

/* Action buttons below chat - fixed position, not affected by input growth */
.hero-chat-actions {
    display: flex;
    flex-wrap: nowrap;
    justify-content: center;
    gap: var(--spacing-2);
    margin-top: var(--spacing-4);
    flex-shrink: 0;
}

/* Hero CTA buttons — large and prominent */
.hero-chat-actions .btn {
    padding: var(--spacing-4) var(--spacing-8);
    font-size: var(--font-size-base);
    min-height: 48px;
    white-space: nowrap;
}

/* Hero chat primary buttons - system blue, flat */
.hero-chat-actions .btn-primary {
    background-color: var(--btn-primary-bg);
    color: var(--btn-primary-text);
    border: none;
    box-shadow: none;
    font-weight: var(--font-weight-semibold);
}

.hero-chat-actions .btn-primary:hover {
    background-color: var(--btn-primary-hover);
}

.hero-chat-actions .btn-primary:active {
    background-color: var(--btn-primary-hover);
}

.hero-chat-actions .btn-primary:focus {
    outline: none;
    box-shadow: none;
}

/* Hero chat secondary buttons - page bg fill, white text & stroke */
.hero-chat-actions .btn-secondary {
    background-color: #121212;
    color: #ffffff;
    border: 1px solid #ffffff;
    box-shadow: none;
    font-weight: var(--font-weight-semibold);
}

.hero-chat-actions .btn-secondary:hover {
    background-color: #1a1a1a;
}

.hero-chat-actions .btn-secondary:active {
    background-color: #1a1a1a;
}

.hero-chat-actions .btn-secondary:focus {
    outline: none;
    box-shadow: none;
}

/* Dark mode */
[data-theme="dark"] .hero-chat-actions .btn-primary {
    background: var(--btn-primary-bg);
    border: none;
    color: var(--btn-primary-text);
    font-weight: var(--font-weight-semibold);
    box-shadow: none;
}

[data-theme="dark"] .hero-chat-actions .btn-primary:hover {
    background: var(--btn-primary-hover);
    color: var(--btn-primary-text);
}

[data-theme="dark"] .hero-chat-actions .btn-secondary {
    background: #121212;
    color: #ffffff;
    border: 1px solid #ffffff;
}

[data-theme="dark"] .hero-chat-actions .btn-secondary:hover {
    background: #1a1a1a;
}

/* Light mode */
[data-theme="light"] .hero-chat-actions .btn-primary {
    background: var(--btn-primary-bg);
    border: none;
    color: var(--btn-primary-text);
}

[data-theme="light"] .hero-chat-actions .btn-primary:hover {
    background: var(--btn-primary-hover);
}

[data-theme="light"] .hero-chat-actions .btn-secondary {
    background: #121212;
    color: #ffffff;
    border: 1px solid #ffffff;
}

[data-theme="light"] .hero-chat-actions .btn-secondary:hover {
    background: #1a1a1a;
}

/* Touch-friendly on mobile (44px minimum) */
@media (max-width: 768px) {
    .hero-chat-actions .btn {
        padding: 12px 24px;
        min-height: 44px;
        font-size: 16px;
    }
}

/* Scrollbar styling - hidden by default, visible on scroll */
.chat-messages {
    --scrollbar-opacity: 0;
    scrollbar-width: thin;
    scrollbar-color: transparent transparent;
}

.chat-messages.is-scrolling {
    --scrollbar-opacity: 1;
    scrollbar-color: rgba(255, 255, 255, 0.3) transparent;
}

[data-theme="light"] .chat-messages.is-scrolling {
    scrollbar-color: rgba(0, 0, 0, 0.2) transparent;
}

/* Webkit scrollbar */
.chat-messages::-webkit-scrollbar {
    width: 6px;
}

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

.chat-messages::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, calc(0.3 * var(--scrollbar-opacity)));
    border-radius: var(--radius-full);
    transition: background 150ms ease-out;
}

[data-theme="light"] .chat-messages::-webkit-scrollbar-thumb {
    background: rgba(0, 0, 0, calc(0.2 * var(--scrollbar-opacity)));
}

.chat-messages.is-scrolling::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.3);
}

[data-theme="light"] .chat-messages.is-scrolling::-webkit-scrollbar-thumb {
    background: rgba(0, 0, 0, 0.2);
}

.chat-messages::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.5);
}

[data-theme="light"] .chat-messages::-webkit-scrollbar-thumb:hover {
    background: rgba(0, 0, 0, 0.35);
}

/* Individual Message Bubbles */
.chat-message {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-1);
    max-width: 85%;
}

/* User messages - right aligned */
.chat-message--user {
    align-self: flex-end;
    width: max-content;
    max-width: 85%;
    margin-left: auto;
    animation: userMessageIn 0.15s ease-out;
}

@keyframes userMessageIn {
    from {
        opacity: 0;
        transform: translateY(4px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.chat-message--user .chat-bubble {
    background: rgba(255, 255, 255, 0.15);
    color: #ffffff;
    border-radius: 24px 24px 4px 24px;
    padding: 12px 20px;
    max-width: 100%;
    word-wrap: break-word;
    overflow-wrap: break-word;
}

[data-theme="light"] .chat-message--user .chat-bubble {
    background: rgba(0, 0, 0, 0.08);
    color: #1a1a1a;
}

/* Bot messages - left aligned, full width */
.chat-message--bot {
    align-self: flex-start;
    max-width: 100%;
    width: 100%;
}

.chat-message--bot .chat-bubble {
    background: transparent;
    color: #ffffff;
    border: none;
    border-radius: 0;
    padding: var(--spacing-2) 0;
    padding-left: 0;
    max-width: 700px;
}

/* Light theme bot text */
[data-theme="light"] .chat-message--bot .chat-bubble {
    background: transparent;
    color: #1a1a1a;
}

/* Bot response action buttons */
.chat-actions {
    display: flex;
    gap: 4px;
    margin-top: 4px;
    opacity: 0;
    transition: opacity 140ms ease-out;
}

.chat-actions.is-visible {
    opacity: 1;
}

.chat-action-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    padding: 0;
    background: transparent;
    border: none;
    border-radius: var(--radius-sm);
    color: rgba(255, 255, 255, 0.5);
    cursor: pointer;
    transition: color var(--motion-fast) var(--ease-out-expo),
                background var(--motion-fast) var(--ease-out-expo);
}

.chat-action-btn:hover {
    color: rgba(255, 255, 255, 0.9);
    background: rgba(255, 255, 255, 0.1);
}

.chat-action-btn.is-active {
    color: var(--color-primary);
}

.chat-action-btn.is-copied {
    color: var(--color-success, #22c55e);
}

[data-theme="light"] .chat-action-btn {
    color: rgba(0, 0, 0, 0.4);
}

[data-theme="light"] .chat-action-btn:hover {
    color: rgba(0, 0, 0, 0.8);
    background: rgba(0, 0, 0, 0.05);
}

/* Message bubble base */
.chat-bubble {
    padding: var(--spacing-2) var(--spacing-3);
    font-size: 17px;
    line-height: 1.4;
    word-wrap: break-word;
    white-space: pre-wrap;
}

/* Typing indicator container (legacy - kept for compatibility) */
.chat-typing-container {
    display: flex;
    align-items: center;
    gap: 12px;
    animation: typingFadeIn 100ms ease-out;
}

@keyframes typingFadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

/* ==========================================================================
   THINKING INDICATOR - 3 Dot Animation
   ========================================================================== */

/* Thinking message state */
.chat-message--thinking .chat-bubble {
    display: flex;
    align-items: center;
    min-height: 24px;
}

.chat-thinking-dots {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 4px 0;
}

.chat-thinking-dot {
    width: 6px;
    height: 6px;
    background: currentColor;
    border-radius: 50%;
    opacity: 0.3;
    animation: thinkingDotPulse 900ms ease-in-out infinite;
}

.chat-thinking-dot:nth-child(1) {
    animation-delay: 0ms;
}

.chat-thinking-dot:nth-child(2) {
    animation-delay: 150ms;
}

.chat-thinking-dot:nth-child(3) {
    animation-delay: 300ms;
}

@keyframes thinkingDotPulse {
    0%, 60%, 100% {
        opacity: 0.3;
        transform: scale(1);
    }
    30% {
        opacity: 1;
        transform: scale(1.1);
    }
}

/* Transition from thinking to typing */
.chat-message--typing .chat-bubble {
    min-height: 24px;
}

/* Smooth content reveal */
.chat-bubble-content {
    display: inline;
}

/* Inline stop button during thinking state */
.chat-message--thinking .chat-actions {
    opacity: 1;
}

.chat-stop-btn-inline {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    padding: 0;
    background: transparent;
    border: none;
    border-radius: var(--radius-sm);
    color: rgba(255, 255, 255, 0.5);
    cursor: pointer;
    transition: color 140ms ease-out, background 140ms ease-out;
}

.chat-stop-btn-inline:hover {
    color: rgba(255, 255, 255, 0.9);
    background: rgba(255, 255, 255, 0.1);
}

[data-theme="light"] .chat-stop-btn-inline {
    color: rgba(0, 0, 0, 0.4);
}

[data-theme="light"] .chat-stop-btn-inline:hover {
    color: rgba(0, 0, 0, 0.8);
    background: rgba(0, 0, 0, 0.05);
}

/* Streaming cursor - blinking caret */
.chat-cursor {
    display: inline-block;
    width: 2px;
    height: 1.2em;
    background: currentColor;
    margin-left: 2px;
    vertical-align: text-bottom;
    animation: cursorBlink 530ms step-end infinite;
}

.chat-cursor.is-fading {
    animation: cursorFadeOut 100ms ease-out forwards;
}

@keyframes cursorBlink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0; }
}

@keyframes cursorFadeOut {
    to { opacity: 0; }
}

/* Word group streaming animation */
.chat-word-group {
    display: inline;
    animation: wordGroupIn 60ms ease-out forwards;
}

@keyframes wordGroupIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

/* Regeneration fade out */
.chat-message--bot.is-fading .chat-bubble {
    transition: opacity 100ms ease-out;
    opacity: 0;
}

/* Stop generation button */
.chat-stop-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-full);
    color: rgba(255, 255, 255, 0.8);
    font-size: 13px;
    cursor: pointer;
    transition: opacity 140ms ease-out, background 140ms ease-out;
}

.chat-stop-btn:hover {
    background: rgba(255, 255, 255, 0.15);
    color: #ffffff;
}

[data-theme="light"] .chat-stop-btn {
    background: rgba(0, 0, 0, 0.05);
    border-color: rgba(0, 0, 0, 0.15);
    color: rgba(0, 0, 0, 0.7);
}

[data-theme="light"] .chat-stop-btn:hover {
    background: rgba(0, 0, 0, 0.1);
    color: #000000;
}

/* Jump to bottom button */
.chat-jump-bottom {
    display: none;
    position: absolute;
    bottom: calc(100% + 70px);
    left: 50%;
    transform: translateX(-50%);
    width: 36px;
    height: 36px;
    background: rgba(0, 0, 0, 0.8);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    color: #ffffff;
    cursor: pointer;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
    z-index: 20;
}

.chat-jump-bottom.is-visible {
    display: flex;
}

.chat-jump-bottom:hover {
    background: rgba(0, 0, 0, 0.9);
    transform: translateX(-50%) scale(1.1);
}

[data-theme="light"] .chat-jump-bottom {
    background: rgba(255, 255, 255, 0.9);
    border-color: rgba(0, 0, 0, 0.15);
    color: #000000;
}

/* User message actions (edit button) */
.chat-message-actions {
    display: flex;
    gap: 4px;
    margin-top: 4px;
    opacity: 0;
    transition: opacity 0.2s ease;
}

.chat-message--user:hover .chat-message-actions {
    opacity: 1;
}

.chat-edit-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    padding: 0;
    background: transparent;
    border: none;
    border-radius: var(--radius-sm);
    color: rgba(255, 255, 255, 0.5);
    cursor: pointer;
    transition: all 0.15s ease;
}

.chat-edit-btn:hover {
    color: rgba(255, 255, 255, 0.9);
    background: rgba(255, 255, 255, 0.1);
}

[data-theme="light"] .chat-edit-btn {
    color: rgba(0, 0, 0, 0.4);
}

[data-theme="light"] .chat-edit-btn:hover {
    color: rgba(0, 0, 0, 0.8);
    background: rgba(0, 0, 0, 0.05);
}

/* Edit message input */
.chat-edit-input {
    width: 100%;
    min-height: 60px;
    padding: var(--spacing-3);
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: var(--radius-lg);
    color: #ffffff;
    font-family: inherit;
    font-size: 17px;
    line-height: 1.4;
    resize: vertical;
}

.chat-edit-input:focus {
    outline: none;
    border-color: var(--color-primary);
}

[data-theme="light"] .chat-edit-input {
    background: rgba(0, 0, 0, 0.05);
    border-color: rgba(0, 0, 0, 0.2);
    color: #1a1a1a;
}

/* Edit controls */
.chat-edit-controls {
    display: flex;
    gap: 8px;
    margin-top: 8px;
}

.chat-edit-controls .btn {
    padding: 8px 16px;
    font-size: 13px;
}

/* Error message styling */
.chat-bubble--error {
    color: var(--color-error, #ef4444);
}

.chat-message--error {
    animation: errorMessageIn 140ms ease-out forwards;
}

@keyframes errorMessageIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

/* Chat Form - container for input + close button */
.chat-form {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Chat Input Container - iOS-style dark pill */
/* Grows upward - bottom edge remains anchored via transform + negative margin */
.chat-input-wrapper {
    flex: 1;
    display: flex;
    align-items: flex-end; /* Anchor content to bottom */
    gap: 12px;
    background: #1c1c1e;
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 9999px; /* Full pill shape regardless of height */
    padding: 14px 20px;
    transition: border-radius 150ms ease-out, transform 100ms ease-out, margin-bottom 100ms ease-out;
}

[data-theme="light"] .chat-input-wrapper {
    background: #e5e5ea;
    border-color: rgba(0, 0, 0, 0.15);
}

/* Search/Chat icon on left */
.chat-input-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    color: #8e8e93; /* iOS gray */
    flex-shrink: 0;
    align-self: flex-end;
    padding-bottom: 2px;
}

.chat-input-icon svg {
    width: 22px;
    height: 22px;
}

/* Chat Input Field - Override global input styles */
.chat-input,
textarea.chat-input {
    flex: 1;
    border: none !important;
    outline: none !important;
    box-shadow: none !important;
    background: transparent !important;
    color: #ffffff;
    font-family: var(--font-family-primary);
    font-size: 17px; /* iOS default */
    font-weight: 400;
    padding: 8px 0 !important; /* Increased vertical target area */
    margin: -8px 0; /* Compensate to keep visual size same */
    min-width: 0;
    caret-color: #117680; /* iOS blue cursor */
    -webkit-appearance: none;
    appearance: none;
    width: auto;
    border-radius: 0;
    resize: none;
    overflow: hidden;
    line-height: 1.4;
    max-height: 120px;
    overflow-y: auto;
    /* Smooth height transition for upward growth */
    transition: height 150ms ease-out;
    /* Prevent scroll-into-view behavior */
    scroll-margin: 0;
    overflow-anchor: none;
}

/* Placeholder fade behavior */
.chat-input::placeholder {
    color: #8e8e93;
    opacity: 1;
    transition: opacity 100ms ease-out;
}

.chat-input:not(:placeholder-shown)::placeholder {
    opacity: 0;
}

.chat-input:focus,
textarea.chat-input:focus {
    border: none !important;
    outline: none !important;
    box-shadow: none !important;
    caret-color: #117680;
}

[data-theme="light"] .chat-input {
    color: #000000;
}

.chat-input::placeholder {
    color: #8e8e93;
}

/* Clear Button - small gray circle with dark X */
.chat-clear-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 22px;
    height: 22px;
    background: #636366;
    color: #1c1c1e;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    flex-shrink: 0;
    padding: 0;
    /* Fade transition instead of display toggle */
    opacity: 0;
    pointer-events: none;
    transition: opacity 140ms ease-out;
    align-self: flex-end;
    margin-bottom: 2px;
}

/* Light mode clear button */
[data-theme="light"] .chat-clear-btn {
    background: #8e8e93;
    color: #ffffff;
}

.chat-clear-btn.is-visible {
    opacity: 1;
    pointer-events: auto;
}

.chat-clear-btn.is-visible:hover {
    opacity: 0.8;
}

.chat-clear-btn.is-visible:active {
    opacity: 0.6;
}

.chat-clear-btn svg {
    width: 12px;
    height: 12px;
}

/* Microphone Button - Speech to text input */
.chat-mic-btn {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background: transparent;
    color: #8e8e93;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    flex-shrink: 0;
    padding: 0;
    transition: color 140ms ease-out, background 140ms ease-out;
    align-self: flex-end;
    margin-bottom: -4px;
    margin-right: -8px;
}

.chat-mic-btn:hover {
    color: #ffffff;
    background: rgba(255, 255, 255, 0.1);
}

.chat-mic-btn:active {
    transform: scale(0.95);
}

.chat-mic-btn.is-recording,
.chat-mic-btn.is-listening {
    color: #ff3b30;
    animation: pulse-mic 1.5s ease-in-out infinite;
    background: rgba(255, 59, 48, 0.15);
}

.chat-mic-btn.is-listening::before {
    content: '';
    position: absolute;
    inset: -4px;
    border-radius: 50%;
    border: 2px solid rgba(255, 59, 48, 0.4);
    animation: pulse-ring 1.5s ease-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

@keyframes pulse-mic {
    0%, 100% {
        opacity: 1;
        transform: scale(1);
    }
    50% {
        opacity: 0.7;
        transform: scale(1.05);
    }
}

@keyframes pulse-ring {
    0% {
        transform: scale(1);
        opacity: 0.6;
    }
    100% {
        transform: scale(1.4);
        opacity: 0;
    }
}

[data-theme="light"] .chat-mic-btn {
    color: #8e8e93;
}

[data-theme="light"] .chat-mic-btn:hover {
    color: #1c1c1e;
    background: rgba(0, 0, 0, 0.05);
}

/* Voice Toggle Button (speaker icon) - Only visible when AI voice chat is active */
.chat-voice-toggle {
    position: relative;
    display: none;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    background: transparent;
    color: #8e8e93;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    flex-shrink: 0;
    padding: 0;
    transition: color 140ms ease-out, background 140ms ease-out;
    align-self: flex-end;
    margin-bottom: -4px;
    margin-right: -4px;
}

.hero-chat.voice-enabled .chat-voice-toggle {
    display: flex;
}

.chat-voice-toggle:hover {
    color: #ffffff;
    background: rgba(255, 255, 255, 0.1);
}

.chat-voice-toggle:active {
    transform: scale(0.95);
}

/* Show/hide icons based on state */
.chat-voice-toggle .icon-muted {
    display: none;
}

.chat-voice-toggle.is-muted .icon-speaker {
    display: none;
}

.chat-voice-toggle.is-muted .icon-muted {
    display: block;
}

.chat-voice-toggle.is-muted {
    color: #ff3b30;
}

/* Light theme */
[data-theme="light"] .chat-voice-toggle {
    color: #8e8e93;
}

[data-theme="light"] .chat-voice-toggle:hover {
    color: #1c1c1e;
    background: rgba(0, 0, 0, 0.05);
}

/* Speaking state animation on container */
.hero-chat.is-speaking .chat-voice-toggle {
    color: #34c759;
    animation: pulse-speaking 1s ease-in-out infinite;
}

@keyframes pulse-speaking {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.6;
    }
}

/* Close Button - matches chat input bar style */
.chat-close-btn {
    position: absolute;
    right: -64px;
    top: 0;
    bottom: 0;
    margin: auto;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 52px;
    height: 52px;
    background: #1c1c1e;
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: #8e8e93;
    border-radius: 50%;
    cursor: pointer;
    padding: 0;
    /* Fade transition instead of display toggle */
    opacity: 0;
    pointer-events: none;
    transition: opacity 140ms ease-out,
                background 140ms ease-out;
}

[data-theme="light"] .chat-close-btn {
    background: #e5e5ea;
    border-color: rgba(0, 0, 0, 0.15);
    color: #8e8e93;
}

.chat-close-btn.is-visible {
    opacity: 1;
    pointer-events: auto;
}

.chat-close-btn:hover {
    background: #2c2c2e;
    color: #ffffff;
}

[data-theme="light"] .chat-close-btn:hover {
    background: #d1d1d6;
    color: #636366;
}

.chat-close-btn:active {
    transform: scale(0.95);
    margin: auto; /* Maintain centering */
}

.chat-close-btn svg {
    width: 24px;
    height: 24px;
}

/* ==========================================================================
   SEARCH RESULTS DROPDOWN
   ========================================================================== */

.chat-search-results {
    position: absolute;
    top: calc(100% + 8px);
    left: 0;
    right: 0;
    background: #1c1c1e;
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 16px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
    overflow: hidden;
    z-index: 200;
    animation: searchResultsIn 150ms ease-out;
}

@keyframes searchResultsIn {
    from {
        opacity: 0;
        transform: translateY(-8px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

[data-theme="light"] .chat-search-results {
    background: #ffffff;
    border-color: rgba(0, 0, 0, 0.1);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.15);
}

.chat-search-results[hidden] {
    display: none;
}

.chat-search-list {
    list-style: none;
    margin: 0;
    padding: 8px 0;
    max-height: 280px;
    overflow-y: auto;
}

.chat-search-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 12px 16px;
    cursor: pointer;
    transition: background 100ms ease-out;
}

.chat-search-item:hover,
.chat-search-item.is-selected {
    background: rgba(255, 255, 255, 0.08);
}

[data-theme="light"] .chat-search-item:hover,
[data-theme="light"] .chat-search-item.is-selected {
    background: rgba(0, 0, 0, 0.04);
}

.chat-search-item-title {
    flex: 1;
    font-size: 14px;
    font-weight: 500;
    color: #ffffff;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

[data-theme="light"] .chat-search-item-title {
    color: #1c1c1e;
}

.chat-search-item-type {
    flex-shrink: 0;
    font-size: 11px;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: rgba(255, 255, 255, 0.5);
    padding: 4px 8px;
    background: rgba(255, 255, 255, 0.08);
    border-radius: 4px;
}

[data-theme="light"] .chat-search-item-type {
    color: rgba(0, 0, 0, 0.5);
    background: rgba(0, 0, 0, 0.06);
}

/* Loading state */
.chat-search-loading {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 16px;
    color: rgba(255, 255, 255, 0.5);
    font-size: 13px;
}

[data-theme="light"] .chat-search-loading {
    color: rgba(0, 0, 0, 0.5);
}

/* No results state */
.chat-search-empty {
    padding: 16px;
    text-align: center;
    color: rgba(255, 255, 255, 0.5);
    font-size: 13px;
}

[data-theme="light"] .chat-search-empty {
    color: rgba(0, 0, 0, 0.5);
}

/* ==========================================================================
   LEAD CAPTURE FORM (Handoff)
   ========================================================================== */

.chat-lead-form {
    display: none;
    flex-direction: column;
    gap: var(--spacing-3);
    padding: var(--spacing-4);
    background: rgba(var(--bg-primary-rgb), 0.95);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-radius: var(--radius-2xl);
    border: 1px solid var(--border-primary);
    animation: messageSlideIn var(--motion-fast) var(--ease-out-expo);
    /* Position absolutely - floats above input like messages */
    position: absolute;
    bottom: calc(100% + 16px);
    left: 0;
    right: 0;
    z-index: 11;
}

.chat-lead-form.is-active {
    display: flex;
}

.chat-lead-form-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
    margin: 0;
}

.chat-lead-form-desc {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin: 0;
}

.chat-lead-input {
    width: 100%;
    padding: var(--spacing-3) var(--spacing-4);
    background: #1a1a1a;
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-lg);
    color: var(--text-primary);
    font-family: var(--font-family-primary);
    font-size: var(--font-size-base);
    transition: border-color var(--motion-fast) var(--ease-out-expo);
}

.chat-lead-input:focus {
    outline: none;
    border-color: var(--btn-primary-bg);
}

.chat-lead-actions {
    display: flex;
    gap: var(--spacing-3);
    flex-wrap: wrap;
}

.chat-lead-actions .btn {
    flex: 1;
    min-width: 140px;
}

/* Success message */
.chat-success {
    display: none;
    text-align: center;
    padding: var(--spacing-6);
    background: rgba(var(--bg-primary-rgb), 0.95);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-radius: var(--radius-2xl);
    border: 1px solid var(--color-success);
    animation: messageSlideIn var(--motion-fast) var(--ease-out-expo);
    /* Position absolutely - floats above input */
    position: absolute;
    bottom: calc(100% + 16px);
    left: 0;
    right: 0;
    z-index: 12;
}

.chat-success.is-active {
    display: block;
}

.chat-success-icon {
    width: 48px;
    height: 48px;
    margin: 0 auto var(--spacing-3);
    background: var(--color-success);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
}

.chat-success-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
    margin: 0 0 var(--spacing-2);
}

.chat-success-desc {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin: 0;
}

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

@media (max-width: 768px) {
    .hero-chat {
        max-width: calc(100% - 32px);
        margin-left: auto;
        margin-right: auto;
    }

    /* is-expanded stays in normal flow - no transform needed */
    .hero-chat.is-expanded {
        max-width: calc(100% - 32px);
        /* Uses margin: auto from base - no left/transform */
    }

    /* Ensure form doesn't overflow on mobile */
    .hero-chat.is-expanded .chat-form {
        max-width: 100%;
    }

    /* Hide close button on mobile */
    .chat-close-btn {
        display: none !important;
    }

    /* Only fixed-position states need centering transform */
    .hero-chat.is-chat-open,
    .hero-chat.is-active {
        width: calc(100% - 32px);
        max-width: calc(100% - 32px);
        left: 50%;
        transform: translateX(-50%);
    }

    .chat-messages {
        max-height: calc(100vh - 16px - 200px);
    }

    .chat-message {
        max-width: 90%;
    }

    .chat-input-wrapper {
        padding: var(--spacing-3) var(--spacing-4);
        min-height: 52px;
    }

    .chat-input {
        font-size: var(--font-size-base);
        padding: var(--spacing-2);
        min-height: 24px;
    }

    .chat-send-btn {
        width: 36px;
        height: 36px;
    }

    .hero-chat-actions {
        flex-direction: row;
        width: 100%;
        justify-content: center;
        align-items: center;
        text-align: center;
    }

    .hero-chat-actions .btn {
        width: auto;
    }
}

@media (max-width: 480px) {
    .chat-messages {
        padding: var(--spacing-3);
        max-height: calc(100vh - 16px - 220px);
    }

    .chat-bubble {
        padding: var(--spacing-2) var(--spacing-3);
        font-size: var(--font-size-sm);
    }

    .chat-lead-form {
        padding: var(--spacing-3);
    }

    .chat-lead-actions {
        flex-direction: column;
    }

    .chat-lead-actions .btn {
        width: 100%;
    }
}

/* ==========================================================================
   CTA FORM CARD - Inline Form with Shimmer Animation
   ========================================================================== */

/* Base card container - appears as assistant message */
.chat-cta-card {
    width: 100%;
    max-width: 400px;
    background: #1c1c1e;
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 16px;
    overflow: hidden;
    /* Fixed height to prevent layout shift */
    min-height: 280px;
    position: relative;
}

[data-theme="light"] .chat-cta-card {
    background: #f5f5f7;
    border-color: rgba(0, 0, 0, 0.1);
}

/* Card inner content */
.chat-cta-content {
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 16px;
    height: 100%;
}

/* ==========================================================================
   STATE 1: FORM_GENERATING - Skeleton with Shimmer
   ========================================================================== */

.chat-cta-card--generating .chat-cta-skeleton {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.chat-cta-card--generating .chat-cta-form-real {
    display: none;
}

/* Skeleton elements */
.chat-cta-skeleton-title {
    height: 24px;
    width: 70%;
    background: rgba(255, 255, 255, 0.08);
    border-radius: 6px;
}

.chat-cta-skeleton-desc {
    height: 16px;
    width: 90%;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 4px;
}

.chat-cta-skeleton-input {
    height: 48px;
    width: 100%;
    background: rgba(255, 255, 255, 0.06);
    border-radius: 12px;
}

.chat-cta-skeleton-btn {
    height: 48px;
    width: 100%;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    margin-top: 8px;
}

/* Light theme skeleton */
[data-theme="light"] .chat-cta-skeleton-title {
    background: rgba(0, 0, 0, 0.08);
}

[data-theme="light"] .chat-cta-skeleton-desc {
    background: rgba(0, 0, 0, 0.05);
}

[data-theme="light"] .chat-cta-skeleton-input {
    background: rgba(0, 0, 0, 0.06);
}

[data-theme="light"] .chat-cta-skeleton-btn {
    background: rgba(0, 0, 0, 0.1);
}

/* Shimmer overlay animation */
.chat-cta-card--generating::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(
        90deg,
        transparent 0%,
        rgba(255, 255, 255, 0.04) 20%,
        rgba(255, 255, 255, 0.08) 50%,
        rgba(255, 255, 255, 0.04) 80%,
        transparent 100%
    );
    background-size: 200% 100%;
    animation: ctaShimmer 1.6s ease-in-out infinite;
    pointer-events: none;
    z-index: 1;
}

[data-theme="light"] .chat-cta-card--generating::before {
    background: linear-gradient(
        90deg,
        transparent 0%,
        rgba(0, 0, 0, 0.02) 20%,
        rgba(0, 0, 0, 0.05) 50%,
        rgba(0, 0, 0, 0.02) 80%,
        transparent 100%
    );
    background-size: 200% 100%;
}

@keyframes ctaShimmer {
    0% {
        background-position: 200% 0;
    }
    100% {
        background-position: -200% 0;
    }
}

/* Preparing label */
.chat-cta-preparing {
    position: absolute;
    bottom: 24px;
    left: 24px;
    font-size: 12px;
    color: rgba(255, 255, 255, 0.4);
    z-index: 2;
}

[data-theme="light"] .chat-cta-preparing {
    color: rgba(0, 0, 0, 0.4);
}

/* ==========================================================================
   STATE 2: FORM_READY - Final Interactive Form
   ========================================================================== */

.chat-cta-card--ready .chat-cta-skeleton {
    display: none;
}

.chat-cta-card--ready .chat-cta-form-real {
    display: flex;
    flex-direction: column;
    gap: 16px;
    animation: ctaFormReveal 300ms ease-out;
}

.chat-cta-card--ready::before {
    display: none;
}

.chat-cta-card--ready .chat-cta-preparing {
    display: none;
}

@keyframes ctaFormReveal {
    from {
        opacity: 0;
        filter: blur(4px);
    }
    to {
        opacity: 1;
        filter: blur(0);
    }
}

/* Form title */
.chat-cta-title {
    font-size: 18px;
    font-weight: 600;
    color: #ffffff;
    margin: 0;
    line-height: 1.3;
}

[data-theme="light"] .chat-cta-title {
    color: #1a1a1a;
}

/* Form description */
.chat-cta-desc {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.6);
    margin: 0;
    line-height: 1.5;
}

[data-theme="light"] .chat-cta-desc {
    color: rgba(0, 0, 0, 0.6);
}

/* Form inputs */
.chat-cta-input {
    width: 100%;
    padding: 14px 16px;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 12px;
    color: #ffffff;
    font-family: inherit;
    font-size: 16px;
    transition: border-color 150ms ease-out, background 150ms ease-out;
}

.chat-cta-input::placeholder {
    color: rgba(255, 255, 255, 0.4);
}

.chat-cta-input:focus {
    outline: none;
    border-color: rgba(255, 255, 255, 0.3);
    background: rgba(255, 255, 255, 0.1);
}

.chat-cta-input.has-error {
    border-color: #ff453a;
}

[data-theme="light"] .chat-cta-input {
    background: rgba(0, 0, 0, 0.04);
    border-color: rgba(0, 0, 0, 0.12);
    color: #1a1a1a;
}

[data-theme="light"] .chat-cta-input::placeholder {
    color: rgba(0, 0, 0, 0.4);
}

[data-theme="light"] .chat-cta-input:focus {
    border-color: rgba(0, 0, 0, 0.3);
    background: rgba(0, 0, 0, 0.06);
}

/* Inline error message */
.chat-cta-error {
    font-size: 12px;
    color: #ff453a;
    margin-top: -8px;
}

/* Submit button */
.chat-cta-submit {
    width: 100%;
    padding: 14px 24px;
    background: #ffffff;
    border: none;
    border-radius: 12px;
    color: #1a1a1a;
    font-family: inherit;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: transform 100ms ease-out, opacity 150ms ease-out;
}

.chat-cta-submit:hover {
    opacity: 0.9;
}

.chat-cta-submit:active {
    transform: scale(0.98);
}

.chat-cta-submit:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

[data-theme="light"] .chat-cta-submit {
    background: #1a1a1a;
    color: #ffffff;
}

/* Secondary link */
.chat-cta-secondary {
    display: block;
    text-align: center;
    font-size: 14px;
    color: rgba(255, 255, 255, 0.5);
    text-decoration: none;
    transition: color 150ms ease-out;
}

.chat-cta-secondary:hover {
    color: rgba(255, 255, 255, 0.8);
}

[data-theme="light"] .chat-cta-secondary {
    color: rgba(0, 0, 0, 0.5);
}

[data-theme="light"] .chat-cta-secondary:hover {
    color: rgba(0, 0, 0, 0.8);
}

/* ==========================================================================
   STATE 3: FORM_ERROR - Fallback State
   ========================================================================== */

.chat-cta-card--error .chat-cta-skeleton,
.chat-cta-card--error .chat-cta-form-real,
.chat-cta-card--error .chat-cta-preparing {
    display: none;
}

.chat-cta-card--error::before {
    display: none;
}

.chat-cta-error-state {
    display: none;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 16px;
    padding: 32px 24px;
    text-align: center;
    min-height: 200px;
}

.chat-cta-card--error .chat-cta-error-state {
    display: flex;
}

.chat-cta-error-message {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.6);
    margin: 0;
}

[data-theme="light"] .chat-cta-error-message {
    color: rgba(0, 0, 0, 0.6);
}

.chat-cta-retry-btn {
    padding: 10px 20px;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 8px;
    color: #ffffff;
    font-family: inherit;
    font-size: 14px;
    cursor: pointer;
    transition: background 150ms ease-out;
}

.chat-cta-retry-btn:hover {
    background: rgba(255, 255, 255, 0.15);
}

[data-theme="light"] .chat-cta-retry-btn {
    background: rgba(0, 0, 0, 0.05);
    border-color: rgba(0, 0, 0, 0.15);
    color: #1a1a1a;
}

[data-theme="light"] .chat-cta-retry-btn:hover {
    background: rgba(0, 0, 0, 0.1);
}

/* ==========================================================================
   SUCCESS STATE - After Form Submission
   ========================================================================== */

.chat-cta-card--success .chat-cta-skeleton,
.chat-cta-card--success .chat-cta-form-real,
.chat-cta-card--success .chat-cta-preparing,
.chat-cta-card--success .chat-cta-error-state {
    display: none;
}

.chat-cta-card--success::before {
    display: none;
}

.chat-cta-success-state {
    display: none;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 12px;
    padding: 32px 24px;
    text-align: center;
    animation: ctaFormReveal 300ms ease-out;
}

.chat-cta-card--success .chat-cta-success-state {
    display: flex;
}

.chat-cta-success-icon {
    width: 48px;
    height: 48px;
    background: #34c759;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #ffffff;
}

.chat-cta-success-title {
    font-size: 18px;
    font-weight: 600;
    color: #ffffff;
    margin: 0;
}

[data-theme="light"] .chat-cta-success-title {
    color: #1a1a1a;
}

.chat-cta-success-desc {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.6);
    margin: 0;
}

[data-theme="light"] .chat-cta-success-desc {
    color: rgba(0, 0, 0, 0.6);
}

/* ==========================================================================
   REDUCED MOTION - Accessibility
   ========================================================================== */

@media (prefers-reduced-motion: reduce) {
    .chat-cta-card--generating::before {
        animation: none;
        background: rgba(255, 255, 255, 0.04);
    }

    [data-theme="light"] .chat-cta-card--generating::before {
        background: rgba(0, 0, 0, 0.03);
    }

    .chat-cta-card--ready .chat-cta-form-real {
        animation: none;
    }

    .chat-cta-success-state {
        animation: none;
    }

    @keyframes ctaFormReveal {
        from { opacity: 0; }
        to { opacity: 1; }
    }
}

/* ==========================================================================
   CTA CARD RESPONSIVE
   ========================================================================== */

@media (max-width: 480px) {
    .chat-cta-card {
        max-width: 100%;
        min-height: 260px;
    }

    .chat-cta-content {
        padding: 20px;
    }

    .chat-cta-title {
        font-size: 16px;
    }

    .chat-cta-input,
    .chat-cta-submit {
        padding: 12px 14px;
        font-size: 15px;
    }
}

/* ==========================================================================
   SYSTEM MODE BUTTON STYLES
   When system preference is selected (no data-theme attribute), these media
   queries ensure buttons adapt to the user's OS dark/light mode preference.
   ========================================================================== */

/* System Dark Mode - Button & Chat Bar styles */
@media (prefers-color-scheme: dark) {
    /* Hero action buttons */
    html:not([data-theme]) .hero-chat-actions .btn-primary {
        background: var(--btn-primary-bg);
        border: none;
        color: var(--btn-primary-text);
        font-weight: var(--font-weight-semibold);
        box-shadow: none;
    }

    html:not([data-theme]) .hero-chat-actions .btn-primary:hover {
        background: var(--btn-primary-hover);
    }

    html:not([data-theme]) .hero-chat-actions .btn-secondary {
        background: var(--bg-primary);
        color: #ffffff;
        border: 1px solid #ffffff;
    }

    html:not([data-theme]) .hero-chat-actions .btn-secondary:hover {
        background: #1a1a1a;
    }

    /* CTA buttons */
    html:not([data-theme]) .chat-cta-submit {
        background: #14B8A6;
        color: #1a1a1a;
    }

    html:not([data-theme]) .chat-cta-secondary {
        color: rgba(255, 255, 255, 0.5);
    }

    html:not([data-theme]) .chat-cta-secondary:hover {
        color: rgba(255, 255, 255, 0.8);
    }

    html:not([data-theme]) .chat-cta-retry-btn {
        background: rgba(255, 255, 255, 0.1);
        border-color: rgba(255, 255, 255, 0.2);
        color: #ffffff;
    }

    html:not([data-theme]) .chat-cta-retry-btn:hover {
        background: rgba(255, 255, 255, 0.15);
    }

    /* Chat bar - dark mode is default, no changes needed */
}

/* System Light Mode - Button & Chat Bar styles */
@media (prefers-color-scheme: light) {
    /* Hero action buttons */
    html:not([data-theme]) .hero-chat-actions .btn-primary {
        background: var(--btn-primary-bg);
        border: none;
        color: var(--btn-primary-text);
    }

    html:not([data-theme]) .hero-chat-actions .btn-primary:hover {
        background: var(--btn-primary-hover);
    }

    html:not([data-theme]) .hero-chat-actions .btn-secondary {
        background: var(--bg-primary);
        color: #ffffff;
        border: 1px solid #ffffff;
    }

    html:not([data-theme]) .hero-chat-actions .btn-secondary:hover {
        background: #1a1a1a;
    }

    /* CTA buttons */
    html:not([data-theme]) .chat-cta-submit {
        background: #1a1a1a;
        color: #ffffff;
    }

    html:not([data-theme]) .chat-cta-secondary {
        color: rgba(0, 0, 0, 0.5);
    }

    html:not([data-theme]) .chat-cta-secondary:hover {
        color: rgba(0, 0, 0, 0.8);
    }

    html:not([data-theme]) .chat-cta-retry-btn {
        background: rgba(0, 0, 0, 0.05);
        border-color: rgba(0, 0, 0, 0.15);
        color: #1a1a1a;
    }

    html:not([data-theme]) .chat-cta-retry-btn:hover {
        background: rgba(0, 0, 0, 0.1);
    }

    /* Chat bar - input wrapper */
    html:not([data-theme]) .chat-input-wrapper {
        background: #e5e5ea;
        border-color: rgba(0, 0, 0, 0.15);
    }

    /* Chat bar - input text */
    html:not([data-theme]) .chat-input {
        color: #000000;
    }

    /* Chat bar - clear button */
    html:not([data-theme]) .chat-clear-btn {
        background: #8e8e93;
        color: #ffffff;
    }

    /* Chat bar - mic button */
    html:not([data-theme]) .chat-mic-btn {
        color: #8e8e93;
    }

    html:not([data-theme]) .chat-mic-btn:hover {
        color: #1c1c1e;
        background: rgba(0, 0, 0, 0.05);
    }

    /* Chat bar - voice toggle */
    html:not([data-theme]) .chat-voice-toggle {
        color: #8e8e93;
    }

    html:not([data-theme]) .chat-voice-toggle:hover {
        color: #1c1c1e;
        background: rgba(0, 0, 0, 0.05);
    }

    /* Chat bar - close button */
    html:not([data-theme]) .chat-close-btn {
        background: #e5e5ea;
        border-color: rgba(0, 0, 0, 0.15);
        color: #8e8e93;
    }

    html:not([data-theme]) .chat-close-btn:hover {
        background: #d1d1d6;
        color: #636366;
    }
}