/* Lucide Icon Utilities */
.lucide-inline {
    width: 1em;
    height: 1em;
    vertical-align: -0.125em;
    display: inline-block;
    flex-shrink: 0;
}

button .lucide-inline,
a .lucide-inline {
    margin-right: 4px;
}

/* Lucide icons inside nav and carousel buttons */
.theme-nav-btn i[data-lucide],
.font-nav-btn i[data-lucide] {
    width: 18px;
    height: 18px;
    display: block;
}

/* Common Styles */
html, body {
    height: 100%;
    margin: 0;
    padding: 0;
    font-family: var(--font-family);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    /* Prevent text selection */
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
}

.chat-page {
    background-color: transparent;
    color: var(--chat-text-color);
    font-family: var(--font-family);
    height: 100vh;
    width: 100%;
    overflow: hidden;
    display: flex;
    justify-content: center;
    padding: 0;
    
    /* Better font rendering */
    text-rendering: optimizeLegibility;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Chroma Key (Green Screen) Mode */
.chat-page.chroma-key {
    background-color: #00b140;
}

/* Wrapper & Container Layout */
#chat-wrapper {
    width: var(--chat-width);
    height: var(--chat-height);
    position: relative; /* For positioning #chat-container */
    border-radius: var(--chat-border-radius);
    overflow: hidden; /* Clip contents like #chat-container */
    box-shadow: var(--chat-box-shadow, none);
    background-color: var(--chat-bg-color); /* Directly use the variable with RGBA */
    z-index: 0; /* Establish stacking context */
}

#chat-wrapper::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image: var(--chat-bg-image, none);
    background-repeat: repeat;
    background-size: contain;
    opacity: var(--chat-bg-image-opacity, 0.55);
    z-index: 1; /* Above background color, below container */
    border-radius: inherit;
    pointer-events: none;
}

#chat-container {
    position: absolute; /* Position relative to wrapper */
    inset: 0; /* Fill the wrapper */
    border-radius: inherit; /* Match wrapper radius */
    border: 2px solid;
    border-color: var(--chat-border-color);
    overflow: hidden; /* Still needed for scroll area clipping */
    background: transparent; /* Make container transparent */
    z-index: 2; /* Above wrapper's ::before pseudo-element */
}

/* Styles for the scrolling inner container */
#chat-scroll-area {
    height: 100%;
    overflow-y: scroll;
    padding: 10px;
    position: relative; /* Keep relative */
    z-index: 1; /* z-index relative to #chat-container now */
    scrollbar-width: none;
    -ms-overflow-style: none;
    box-sizing: border-box;
    color: var(--chat-text-color); /* Apply text color here */
    font-family: var(--font-family); /* Apply font family here */
    font-size: var(--font-size); /* Apply font size here */
    font-weight: var(--font-weight, normal); /* Apply font weight here */
    /* Disable browser scroll anchoring; we manage scroll manually */
    overflow-anchor: none;
}

/* Top fade-out effect in windowed mode - toggled via .top-fade class on body */
body.window-mode.top-fade #chat-scroll-area {
    -webkit-mask-image: linear-gradient(
        to bottom,
        transparent 0%,
        rgba(0, 0, 0, 0.4) 6%,
        black 15%
    );
    mask-image: linear-gradient(
        to bottom,
        transparent 0%,
        rgba(0, 0, 0, 0.4) 6%,
        black 15%
    );
}

#chat-scroll-area::-webkit-scrollbar {
    display: none;
}

/* Clips the glide transform on #chat-messages */
#chat-glide-clip {
    min-height: 100%;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

#chat-messages {
    display: flex;
    flex-direction: column;
    width: 100%;
    flex: 1 0 auto; /* Fill the clip box so messages stay bottom-anchored */
    justify-content: flex-end;
}

@media (prefers-reduced-motion: reduce) {
    .chat-message {
        animation: none !important;
    }
    .popup-message {
        transition-duration: 0.01ms !important;
    }
}