/**
 * Chat Attachments Component
 * File attachment preview and drag-drop overlay for the chat input
 * Follows HeuriSight Dashboard Design Philosophy v1.0
 */

/* ============================================
   ATTACHED DOCUMENTS CONTAINER
   ============================================ */

.attached-documents-container {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    padding: 12px 16px;
    margin: 0 16px 8px;
    background: var(--bg-secondary, #F5F5F7);
    border-radius: 12px;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

[data-theme="dark"] .attached-documents-container {
    background: var(--bg-tertiary, #2C2C2E);
}

/* ============================================
   DOCUMENT PILL
   ============================================ */

.document-pill {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 12px;
    background: var(--bg-primary, #FFFFFF);
    border: 1px solid var(--border-light, #E5E5EA);
    border-radius: 10px;
    font-size: 13px;
    min-width: 200px;
    max-width: 320px;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.04);
    transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.document-pill:hover {
    border-color: var(--border-medium, #C7C7CC);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.06);
}

[data-theme="dark"] .document-pill {
    background: var(--bg-secondary, #1C1C1E);
    border-color: var(--border-dark, #3A3A3C);
}

[data-theme="dark"] .document-pill:hover {
    border-color: var(--border-medium, #48484A);
}

/* Processing state */
.document-pill--processing {
    opacity: 0.85;
}

/* Error state */
.document-pill--error {
    border-color: var(--error, #FF3B30);
    background: rgba(255, 59, 48, 0.04);
}

/* ============================================
   DOCUMENT PILL PARTS
   ============================================ */

.document-pill__icon {
    flex-shrink: 0;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-secondary, #F5F5F7);
    border-radius: 8px;
    color: var(--text-secondary, #86868B);
}

[data-theme="dark"] .document-pill__icon {
    background: var(--bg-tertiary, #2C2C2E);
    color: var(--text-secondary, #A1A1A6);
}

.document-pill__icon .doc-type-icon {
    width: 18px;
    height: 18px;
}

.document-pill__icon .doc-type-icon--pdf {
    color: #FF3B30;
}

.document-pill__info {
    flex: 1;
    min-width: 0;
    overflow: hidden;
}

.document-pill__name {
    font-weight: 500;
    color: var(--text-primary, #1D1D1F);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    line-height: 1.3;
}

[data-theme="dark"] .document-pill__name {
    color: var(--text-primary, #F5F5F7);
}

.document-pill__meta {
    font-size: 11px;
    color: var(--text-tertiary, #86868B);
    margin-top: 2px;
}

.document-pill__status {
    flex-shrink: 0;
    width: 18px;
    height: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.doc-status-icon {
    width: 16px;
    height: 16px;
}

.doc-status-icon--success {
    color: var(--success, #34C759);
}

.doc-status-icon--error {
    color: var(--error, #FF3B30);
}

/* Processing spinner */
.document-spinner {
    width: 14px;
    height: 14px;
    border: 2px solid var(--border-light, #E5E5EA);
    border-top-color: var(--accent, #007AFF);
    border-radius: 50%;
    animation: doc-spin 0.8s linear infinite;
}

@keyframes doc-spin {
    to { transform: rotate(360deg); }
}

/* ============================================
   DOCUMENT PILL ACTIONS
   ============================================ */

.document-pill__actions {
    display: flex;
    align-items: center;
    gap: 6px;
    margin-left: 4px;
}

.document-pill__btn {
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: opacity 0.15s ease, color 0.15s ease;
}

.document-pill__btn--promote {
    font-size: 11px;
    font-weight: 500;
    color: var(--accent, #007AFF);
    padding: 4px 8px;
    border-radius: 4px;
    background: rgba(0, 122, 255, 0.08);
    white-space: nowrap;
}

.document-pill__btn--promote:hover {
    background: rgba(0, 122, 255, 0.15);
}

[data-theme="dark"] .document-pill__btn--promote {
    background: rgba(10, 132, 255, 0.15);
    color: var(--accent, #0A84FF);
}

[data-theme="dark"] .document-pill__btn--promote:hover {
    background: rgba(10, 132, 255, 0.25);
}

.document-pill__btn--remove {
    width: 22px;
    height: 22px;
    border-radius: 6px;
    color: var(--text-tertiary, #86868B);
    opacity: 0.6;
}

.document-pill__btn--remove:hover {
    opacity: 1;
    background: var(--bg-secondary, #F5F5F7);
    color: var(--error, #FF3B30);
}

[data-theme="dark"] .document-pill__btn--remove:hover {
    background: var(--bg-tertiary, #3A3A3C);
}

.document-pill__btn--remove svg {
    width: 14px;
    height: 14px;
}

/* ============================================
   DRAG OVERLAY
   ============================================ */

.chat-drag-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 122, 255, 0.08);
    border: 2px dashed var(--accent, #007AFF);
    border-radius: 16px;
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 100;
    backdrop-filter: blur(4px);
    pointer-events: none;
}

[data-theme="dark"] .chat-drag-overlay {
    background: rgba(10, 132, 255, 0.12);
    border-color: var(--accent, #0A84FF);
}

.drag-overlay-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    text-align: center;
    padding: 24px;
}

.drag-overlay-icon {
    width: 48px;
    height: 48px;
    color: var(--accent, #007AFF);
}

.drag-overlay-icon .doc-upload-icon {
    width: 48px;
    height: 48px;
}

.drag-overlay-text {
    font-size: 16px;
    font-weight: 600;
    color: var(--accent, #007AFF);
}

.drag-overlay-hint {
    font-size: 12px;
    color: var(--text-secondary, #86868B);
    max-width: 280px;
}

/* ============================================
   CHAT INPUT CONTAINER DRAG STATE
   ============================================ */

/* Make chat-input-container relative for overlay positioning */
.chat-input-container {
    position: relative;
}

.chat-input-container.drag-over-documents .chat-input-wrapper {
    border-color: var(--accent, #007AFF);
    background: rgba(0, 122, 255, 0.04);
}

[data-theme="dark"] .chat-input-container.drag-over-documents .chat-input-wrapper {
    border-color: var(--accent, #0A84FF);
    background: rgba(10, 132, 255, 0.08);
}

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

@media (max-width: 768px) {
    .attached-documents-container {
        margin: 0 12px 8px;
        padding: 10px 12px;
    }
    
    .document-pill {
        min-width: 160px;
        max-width: 100%;
        padding: 8px 10px;
    }
    
    .document-pill__icon {
        width: 28px;
        height: 28px;
    }
    
    .document-pill__icon .doc-type-icon {
        width: 16px;
        height: 16px;
    }
    
    .document-pill__name {
        font-size: 12px;
    }
    
    .document-pill__btn--promote {
        font-size: 10px;
        padding: 3px 6px;
    }
}