/**
 * XWUIChatInput Component Styles
 * Structure and behavior only - colors come from CSS variables
 * 
 * Style Dependencies:
 * - Base: reset.css, typography.css, utilities.css
 * - Brand: brand/xwui/brand.css
 * - Style: style/modern/spacing.css
 * - Theme: theme/colors/{selected-theme}.css (MANDATORY - provides all color variables)
 * - Theme: theme/accents/{selected-accent}.css (MANDATORY - provides accent color variables)
 * - Lines: theme/lines/balanced.css (global border widths)
 * - Roundness: theme/roundness/pill.css (global roundness)
 * - Typography: theme/typography/*.css
 */

.xwui-chatinput {
    display: flex;
    align-items: flex-end;
    gap: var(--spacing-sm, 0.5rem);
    padding: var(--spacing-sm, 0.75rem);
    border-top: var(--border-chatinput-width, var(--border-width-regular, 1.5px)) var(--border-chatinput-style, solid) var(--border-chatinput-color, var(--border-color));
    background: var(--bg-primary);
}

.xwui-chatinput-wrapper {
    flex: 1;
    display: flex;
    align-items: flex-end;
    gap: 0.5rem;
    position: relative;
}

.xwui-chatinput-textarea {
    flex: 1;
    padding: var(--spacing-sm, 0.75rem);
    border: var(--border-input-width, var(--border-width-regular, 1.5px)) var(--border-input-style, solid) var(--border-input-color, var(--border-color));
    border-radius: var(--radius-input, var(--radius-full, 24px));
    background: var(--bg-input, var(--bg-primary, #ffffff));
    color: var(--text-primary, #212529);
    resize: none;
    font-family: var(--font-input-family, var(--font-family-base, inherit));
    font-size: var(--font-size-sm, 0.875rem);
    line-height: 1.5;
    overflow-y: auto;
    transition: border-color 0.2s;
    min-height: 2.5rem;
    max-height: 10rem;
}

.xwui-chatinput-textarea::placeholder {
    color: var(--text-tertiary, #adb5bd);
}

.xwui-chatinput-textarea:focus {
    outline: none;
    border-color: var(--accent-primary);
}

.xwui-chatinput-file-button {
    flex-shrink: 0;
    box-sizing: border-box;
    width: 2.5rem;
    height: 2.5rem;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    border: var(--border-button-width, var(--border-width-regular, 1.5px)) var(--border-button-style, solid) var(--border-button-color, var(--border-color));
    border-radius: 50%;
    background: var(--bg-primary);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.2s;
    font-size: var(--font-size-xl, 1.25rem);
}

.xwui-chatinput-file-button:hover:not(:disabled) {
    background: var(--bg-secondary);
    border-color: var(--accent-primary);
    color: var(--accent-primary);
}

.xwui-chatinput-file-button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.xwui-chatinput-file-input {
    display: none;
}

.xwui-chatinput-send-button {
    flex-shrink: 0;
    width: 2.5rem;
    height: 2.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    border: none;
    border-radius: 50%;
    background: var(--accent-primary);
    color: var(--text-on-accent);
    cursor: pointer;
    transition: all 0.2s;
    font-size: var(--font-size-xl, 1.25rem);
}

.xwui-chatinput-send-button:hover:not(:disabled) {
    opacity: 0.9;
    transform: scale(1.05);
}

.xwui-chatinput-send-button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Center the glyph EXACTLY inside the round composer buttons. The icon
 * library wraps each glyph in an inline-flex host whose baseline line-box
 * carries ~3–4px of phantom descender space (button font-size is xl),
 * nudging every icon visibly down (and the asymmetric glyph shapes read as
 * "off to the left"). Collapsing the host to a zero-line-height flex box
 * and making the SVG a block element removes that descender gap so the icon
 * sits on the geometric centre. Covers the raw-SVG voice/recording buttons
 * too (they inject the SVG directly, no host span). */
.xwui-chatinput-file-button__icon,
.xwui-chatinput-send-button__icon {
    display: flex;
    align-items: center;
    justify-content: center;
    line-height: 0;
}
.xwui-chatinput-file-button svg,
.xwui-chatinput-send-button svg,
.xwui-chatinput-voice-button svg,
.xwui-chatinput-recording-cancel svg,
.xwui-chatinput-recording-finish svg {
    display: block;
}

/* ── Main column (attachments / recording / wrapper stack) ─────────────────*/
.xwui-chatinput-main {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs, 0.25rem);
    min-width: 0;
}

/* ── Staged attachments ────────────────────────────────────────────────────*/
.xwui-chatinput-attachments {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs, 0.25rem);
}
.xwui-chatinput-attachments[hidden] {
    display: none;
}
.xwui-chatinput-attachment {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs, 0.25rem);
    max-width: 240px;
    padding: 2px var(--spacing-xs, 0.25rem) 2px 2px;
    border: var(--border-width-regular, 1.5px) solid var(--border-color);
    border-radius: var(--radius-sm, 0.375rem);
    background: var(--bg-secondary, rgba(0, 0, 0, 0.03));
    font-size: var(--font-size-xs, 0.75rem);
    color: var(--text-primary);
}
.xwui-chatinput-attachment-thumb {
    width: 28px;
    height: 28px;
    object-fit: cover;
    border-radius: var(--radius-xs, 0.25rem);
}
.xwui-chatinput-attachment-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    color: var(--text-secondary);
}
.xwui-chatinput-attachment-name {
    max-width: 120px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.xwui-chatinput-attachment-size {
    color: var(--text-tertiary, var(--text-secondary));
    white-space: nowrap;
}
.xwui-chatinput-attachment-remove {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: none;
    background: transparent;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 2px;
    border-radius: 50%;
}
.xwui-chatinput-attachment-remove:hover {
    background: var(--bg-tertiary, rgba(0, 0, 0, 0.06));
    color: var(--text-primary);
}

/* ── Voice button + recording row ──────────────────────────────────────────*/
.xwui-chatinput-voice-button {
    flex-shrink: 0;
    width: 2.5rem;
    height: 2.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    border: var(--border-button-width, var(--border-width-regular, 1.5px)) var(--border-button-style, solid) var(--border-button-color, var(--border-color));
    border-radius: 50%;
    background: var(--bg-primary);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.2s;
}
.xwui-chatinput-voice-button:hover:not(:disabled) {
    background: var(--bg-secondary);
    border-color: var(--accent-primary);
    color: var(--accent-primary);
}
.xwui-chatinput-voice-button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}
.xwui-chatinput-voice-button[hidden],
.xwui-chatinput-send-button[hidden] {
    display: none;
}

.xwui-chatinput-recording {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm, 0.5rem);
    min-height: 2.5rem;
    padding: 0 var(--spacing-sm, 0.5rem);
}
.xwui-chatinput-recording[hidden] {
    display: none;
}
.xwui-chatinput-recording-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--color-danger, #e5484d);
    animation: xwui-chatinput-recording-pulse 1.2s infinite ease-in-out;
}
.xwui-chatinput-recording-timer {
    font-variant-numeric: tabular-nums;
    color: var(--text-primary);
    flex: 1 1 auto;
}
.xwui-chatinput-recording-cancel,
.xwui-chatinput-recording-finish {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2rem;
    height: 2rem;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    transition: all 0.2s;
}
.xwui-chatinput-recording-cancel {
    background: transparent;
    color: var(--text-secondary);
}
.xwui-chatinput-recording-cancel:hover {
    background: var(--bg-secondary);
    color: var(--color-danger, #e5484d);
}
.xwui-chatinput-recording-finish {
    background: var(--accent-primary);
    color: var(--text-on-accent);
}
.xwui-chatinput-recording-finish:hover {
    opacity: 0.9;
}

@keyframes xwui-chatinput-recording-pulse {
    0%, 100% { opacity: 1; }
    50%      { opacity: 0.35; }
}

/* ── Disabled + drag-over states ───────────────────────────────────────────*/
.xwui-chatinput-disabled {
    opacity: 0.6;
    pointer-events: none;
}
.xwui-chatinput-dragover {
    outline: 2px dashed var(--accent-primary);
    outline-offset: -2px;
}

@media (prefers-reduced-motion: reduce) {
    .xwui-chatinput-recording-dot { animation: none; }
}