/* General AI UI Variables (can be overridden by dark-mode.css) */
:root {
    --ai-bg-color: rgba(255, 255, 255, 0.095); /* Light translucent white */
    --ai-dark-bg-color: rgba(30, 30, 30, 0.85); /* Dark translucent gray */
    --ai-backdrop-filter: blur(20px);
    --ai-card-bg: #fff;
    --ai-dark-card-bg: #2a2a2a;
    --ai-border-color: #e1e4e8;
    --ai-dark-border-color: #3b3b3b;
    --ai-text-primary: #333;
    --ai-dark-text-primary: #f5f7fa;
    --ai-text-secondary: #666;
    --ai-dark-text-secondary: #b0b0b0;
    --ai-input-bg: #f8f8f8;
    --ai-dark-input-bg: #1e1e1e;
    --ai-primary-color: var(--primary-color);
    --ai-ai-message-bg: #edf2f7; /* Light gray for AI messages */
    --ai-dark-ai-message-bg: #4a4a4a;
    --ai-user-message-bg: #e2f0ff; /* Light blue for user messages */
    --ai-dark-user-message-bg: #324a66;
}

/* Dark mode specific overrides, integrating with your existing dark-mode.css concept */
[data-theme="dark"] {
    --ai-bg-color: var(--ai-dark-bg-color);
    --ai-card-bg: var(--ai-dark-card-bg);
    --ai-border-color: var(--ai-dark-border-color);
    --ai-text-primary: var(--ai-dark-text-primary);
    --ai-text-secondary: var(--ai-dark-text-secondary);
    --ai-input-bg: var(--ai-dark-input-bg);
    --ai-ai-message-bg: var(--ai-dark-ai-message-bg);
    --ai-user-message-bg: var(--ai-dark-user-message-bg);
}

[data-high-contrast="true"] {
    --ai-bg-color: var(--ai-dark-bg-color) !important; /* Keep the same background color */
}


/* Main overlay for AI chat window */
#ai-main-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background-color: var(--ai-bg-color) !important;
    backdrop-filter: var(--ai-backdrop-filter);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 999999999; /* On top of everything */

    opacity: 0;
    visibility: hidden; /* Start hidden */
    transition: opacity 0.4s ease-out, visibility 0.4s ease-out;
}

#ai-main-overlay.is-active {
    opacity: 1;
    visibility: visible;
}


/* AI Chat Window (the main UI part) */
#ai-chat-window {
    background-color: var(--ai-card-bg);
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    display: flex;
    flex-direction: column;
    width: clamp(320px, 90%, 700px); /* Responsive width */
    height: clamp(400px, 80vh, 800px); /* Responsive height */
    overflow: hidden;
    transform: translateY(50px); /* Start slightly below center */
    opacity: 0;
    transition: transform 0.4s cubic-bezier(0.25, 0.8, 0.25, 1), opacity 0.4s ease-out; /* Smooth slide-up and fade-in */
}

#ai-main-overlay.is-active #ai-chat-window {
    transform: translateY(0); /* Slide to center */
    opacity: 1;
}

/* Header for AI chat window */
.ai-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 25px;
    border-bottom: 1px solid var(--ai-border-color);
    background-color: var(--ai-card-bg); /* Match chat window background */
    z-index: 10; /* Keep header above messages */
}

.ai-header h3 {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--ai-text-primary);
    margin: 0;
}

.ai-close-btn {
    background: none;
    border: none;
    cursor: pointer;
    color: var(--ai-text-secondary);
    transition: color 0.2s ease;
    padding: 5px; /* Increase hit area */
}

.ai-close-btn:hover {
    color: var(--ai-primary-color);
}


/* Conversation Area */
#ai-conversation {
    flex-grow: 1;
    padding: 20px 25px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 15px;
    scroll-behavior: smooth;
    -webkit-overflow-scrolling: touch; /* For smoother scrolling on iOS */
}

#ai-conversation::-webkit-scrollbar {
    width: 8px; /* Width of the scrollbar */
    background-color: transparent;
}

#ai-conversation::-webkit-scrollbar-thumb {
    background-color: var(--ai-dark-text-secondary); /* Color of the scrollbar thumb */
    border-radius: 4px; /* Rounded corners */
}

.ai-message {
    max-width: 85%;
    padding: 12px 18px;
    border-radius: 18px;
    font-size: 0.95rem;
    line-height: 1.5;
    animation: fadeInMessage 0.3s ease-out forwards; /* Animation for new messages */
    color: var(--ai-text-primary);
}

.ai-message p {
    margin: 0;
}

.ai-message.ai-bot {
    background-color: var(--ai-ai-message-bg);
    align-self: flex-start;
    border-bottom-left-radius: 4px; /* Slight corner for bot messages */
}

.ai-message.ai-user {
    background-color: var(--ai-user-message-bg);
    align-self: flex-end;
    border-bottom-right-radius: 4px; /* Slight corner for user messages */
}

/* Input Area */
#ai-input-area {
    display: flex;
    align-items: center;
    padding: 15px 25px;
    border-top: 1px solid var(--ai-border-color);
    background-color: var(--ai-card-bg); /* Match chat window background */
    gap: 10px;
}

#ai-input {
    flex-grow: 1;
    padding: 12px 18px;
    border: 1px solid var(--ai-border-color);
    border-radius: 25px; /* Pill shape */
    font-size: 1rem;
    background-color: var(--ai-input-bg);
    color: var(--ai-text-primary);
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

#ai-input:focus {
    outline: none;
    border-color: var(--ai-primary-color);
    box-shadow: 0 0 0 3px rgba(66, 153, 225, 0.15);
}
/* Disable state for input and button */
#ai-input:disabled {
    background-color: var(--ai-input-bg);
    opacity: 0.7;
    cursor: not-allowed;
}
#ai-send-btn:disabled {
    background-color: #a0aec0; /* A neutral gray */
    cursor: not-allowed;
    transform: none;
}


#ai-send-btn {
    background-color: var(--ai-primary-color);
    color: white;
    border: none;
    border-radius: 50%; /* Circle shape */
    width: 48px;
    height: 48px;
    min-width: 48px; /* Ensure it doesn't shrink */
    min-height: 48px; /* Ensure it doesn't shrink */
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    transition: background-color 0.2s ease, transform 0.1s ease;
}

#ai-send-btn:not(:disabled):hover {
    background-color: #3182ce;
    transform: translateY(-1px);
}

#ai-send-btn:not(:disabled):active {
    transform: translateY(0);
}

#ai-send-btn svg {
    width: 22px;
    height: 22px;
}

/* Dynamic Island Toggle Button */
#ai-toggle-button {
    position: fixed;
    top: 20px;
    left: 50%;
    transform: translateX(-50%);
    background: linear-gradient(135deg, rgba(70, 70, 70, 0.95), rgba(40, 40, 40, 0.95)); /* Dark subtle gradient */
    color: white;
    padding: 8px 20px;
    border-radius: 999px; /* Pill shape */
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.25), 0 1px 4px rgba(0, 0, 0, 0.1);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9rem;
    font-weight: 500;
    z-index: 100000; /* Higher than other app content, lower than overlay */
    transition: opacity 0.3s ease, visibility 0.3s ease;
    user-select: none; /* Prevent text selection */
}

#ai-toggle-button p {
    margin: 0;
}

/* Hide toggle when AI chat is active */
#ai-toggle-button.is-hidden {
    opacity: 0;
    visibility: hidden;
}

/* Keyframe for message animation */
@keyframes fadeInMessage {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* AI Typing Indicator (Loading Animation) */
.ai-typing-indicator {
    max-width: 85%; /* Match message width */
    align-self: flex-start; /* Match bot message alignment */
    display: flex;
    align-items: center;
    gap: 5px;
    background-color: var(--ai-ai-message-bg);
    padding: 12px 18px;
    border-radius: 18px;
    border-bottom-left-radius: 4px;
    animation: fadeInMessage 0.3s ease-out forwards;
}

.ai-typing-indicator span {
    display: inline-block;
    width: 8px;
    height: 8px;
    background-color: var(--ai-text-secondary);
    border-radius: 50%;
    opacity: 0.6;
    animation: bounce 1.4s infinite ease-in-out;
}

.ai-typing-indicator span:nth-child(1) { animation-delay: 0s; }
.ai-typing-indicator span:nth-child(2) { animation-delay: 0.2s; }
.ai-typing-indicator span:nth-child(3) { animation-delay: 0.4s; }

@keyframes bounce {
    0%, 80%, 100% { transform: translateY(0); }
    40% { transform: translateY(-8px); }
}


/* Responsive adjustments */
@media (max-width: 768px) {
    #ai-chat-window {
        width: 100vw;
        height: 100vh;
        border-radius: 0;
        box-shadow: none;
    }

    .ai-header {
        padding: 10px 20px;
    }

    .ai-header h3 {
        font-size: 1.1rem;
    }

    #ai-conversation {
        padding: 15px 20px;
        gap: 10px;
    }

    .ai-message {
        padding: 10px 15px;
        font-size: 0.9rem;
    }

    #ai-input-area {
        padding: 10px 20px;
    }

    #ai-input {
        padding: 10px 15px;
        font-size: 0.9rem;
    }

    #ai-send-btn {
        width: 40px;
        height: 40px;
        min-width: 40px;
        min-height: 40px;
    }
    #ai-send-btn svg {
        width: 20px;
        height: 20px;
    }

    #ai-toggle-button {
        top: 15px;
        padding: 6px 15px;
        font-size: 0.8rem;
    }

    .ai-typing-indicator span {
        width: 6px;
        height: 6px;
    }
    @keyframes bounce {
        0%, 80%, 100% { transform: translateY(0); }
        40% { transform: translateY(-6px); }
    }
}

/* Small adjustments for high contrast, assuming a high-contrast class or data-attribute */
[data-high-contrast="true"] #ai-main-overlay {
    background-color: rgba(255, 255, 255, 0.98); /* Less translucent for HC */
    backdrop-filter: none; /* Remove blur for HC */
}
[data-high-contrast="true"] #ai-toggle-button {
    border: 2px solid var(--ai-primary-color);
    background: var(--ai-card-bg);
    color: var(--ai-primary-color);
    box-shadow: none;
}
[data-high-contrast="true"] #ai-send-btn {
    border: 2px solid var(--ai-primary-color);
    background: none;
    color: var(--ai-primary-color);
}
[data-high-contrast="true"] #ai-send-btn:hover {
    background: var(--ai-primary-color);
    color: white;
}
[data-high-contrast="true"] .ai-message.ai-bot {
    border: 1px solid var(--ai-primary-color);
    background-color: transparent;
}
[data-high-contrast="true"] .ai-message.ai-user {
    border: 1px solid var(--ai-primary-color);
    background-color: transparent;
}
[data-high-contrast="true"] .ai-typing-indicator {
    border: 1px solid var(--ai-primary-color);
    background-color: transparent;
}