/* Storage Squared — AI Assistant drawer styles */

:root {
    --ai-panel-width: 440px;
    --ai-panel-min: 320px;
}

/* The MudDrawer's Width parameter binds to the CSS variable above. The drag
   handle updates the variable in real time and the drawer follows.
   We also force the override here in case MudBlazor's inline-style precedence
   needs to be beaten on subsequent re-renders. */
.mud-drawer.ai-assistant-drawer {
    width: var(--ai-panel-width) !important;
    min-width: var(--ai-panel-min);
    max-width: 90vw;
}

/* While the user is dragging the resize handle, kill all width transitions
   so the drawer follows the cursor exactly. */
body.ai-resizing,
body.ai-resizing .mud-drawer,
body.ai-resizing .mud-drawer .mud-drawer-content,
body.ai-resizing .mud-main-content {
    transition: none !important;
    user-select: none !important;
    cursor: col-resize !important;
}

/* The drag handle on the LEFT edge of the drawer (the edge facing content) */
.ai-assistant-resize-handle {
    position: absolute;
    left: -3px;
    top: 0;
    bottom: 0;
    width: 8px;
    cursor: col-resize;
    z-index: 5;
    background: transparent;
}

.ai-assistant-resize-handle::before {
    content: '';
    position: absolute;
    left: 3px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: transparent;
    transition: background 0.15s ease;
}

.ai-assistant-resize-handle:hover::before,
body.ai-resizing .ai-assistant-resize-handle::before {
    background: linear-gradient(180deg, transparent, #6366f1 20%, #8b5cf6 80%, transparent);
}

/* ============================================================
   Panel content layout
   ============================================================ */

.ai-assistant-content {
    height: 100%;
    display: flex;
    flex-direction: column;
    background: var(--mud-palette-surface, #ffffff);
    position: relative;
}

.ai-assistant-header {
    display: flex;
    align-items: center;
    padding: 12px 16px;
    border-bottom: 1px solid var(--mud-palette-divider, rgba(0, 0, 0, 0.08));
    min-height: 56px;
    gap: 8px;
    flex-shrink: 0;
}

.ai-assistant-header-title {
    flex: 1;
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--mud-palette-text-primary);
}

.ai-assistant-header-title-icon {
    width: 32px;
    height: 32px;
    border-radius: 8px;
    background: linear-gradient(135deg, #6366f1, #8b5cf6);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 18px;
}

.ai-assistant-context-strip {
    padding: 8px 16px;
    background: var(--mud-palette-background-grey, #f5f5f5);
    border-bottom: 1px solid var(--mud-palette-divider, rgba(0, 0, 0, 0.08));
    font-size: 0.78rem;
    color: var(--mud-palette-text-secondary);
    display: flex;
    align-items: center;
    gap: 6px;
    flex-shrink: 0;
}

.ai-assistant-context-strip .mud-icon-root {
    font-size: 14px;
}

.ai-assistant-messages {
    flex: 1;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    scroll-behavior: smooth;
    background: var(--mud-palette-background, #fafafa);
}

.ai-assistant-messages::-webkit-scrollbar {
    width: 6px;
}

.ai-assistant-messages::-webkit-scrollbar-thumb {
    background: rgba(0, 0, 0, 0.15);
    border-radius: 3px;
}

/* ============================================================
   Full-width message blocks (no bubbles)
   ============================================================ */

.ai-message {
    padding: 14px 18px;
    border-bottom: 1px solid var(--mud-palette-divider, rgba(0, 0, 0, 0.06));
    animation: ai-message-fade-in 0.2s ease-out;
}

@keyframes ai-message-fade-in {
    from { opacity: 0; transform: translateY(2px); }
    to { opacity: 1; transform: translateY(0); }
}

.ai-message-header {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.72rem;
    font-weight: 700;
    color: var(--mud-palette-text-secondary);
    margin-bottom: 8px;
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.ai-message-header .mud-icon-root {
    font-size: 14px;
}

.ai-message-time {
    margin-left: auto;
    font-weight: 400;
    text-transform: none;
    letter-spacing: 0;
    opacity: 0.7;
}

.ai-message-body {
    color: var(--mud-palette-text-primary, #111827);
    font-size: 0.92rem;
    line-height: 1.55;
    white-space: pre-wrap;
    word-wrap: break-word;
}

.ai-message-user {
    background: rgba(99, 102, 241, 0.04);
    border-left: 3px solid #8b5cf6;
}

.ai-message-assistant {
    background: var(--mud-palette-surface, #ffffff);
}

.ai-message-error {
    background: rgba(239, 68, 68, 0.06);
    border-left: 3px solid #ef4444;
}

.ai-message-error .ai-message-header {
    color: #b91c1c;
}

.ai-message-streaming::after {
    content: '▍';
    display: inline-block;
    margin-left: 2px;
    animation: ai-cursor-blink 1s step-end infinite;
    color: #6366f1;
}

@keyframes ai-cursor-blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0; }
}

/* System (context-change) divider */
.ai-system-divider {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 18px 10px 18px;
    color: var(--mud-palette-text-secondary);
    font-size: 0.72rem;
    font-style: italic;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.ai-system-divider::before,
.ai-system-divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--mud-palette-divider, rgba(0, 0, 0, 0.1));
}

/* ============================================================
   Empty state
   ============================================================ */

.ai-assistant-empty {
    padding: 48px 24px 24px 24px;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    color: var(--mud-palette-text-secondary);
    gap: 12px;
}

.ai-assistant-empty-icon {
    width: 64px;
    height: 64px;
    border-radius: 16px;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.12), rgba(139, 92, 246, 0.12));
    display: flex;
    align-items: center;
    justify-content: center;
    color: #8b5cf6;
    font-size: 32px;
    margin-bottom: 8px;
}

.ai-assistant-empty-title {
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--mud-palette-text-primary);
}

.ai-assistant-empty-subtitle {
    font-size: 0.85rem;
    max-width: 320px;
}

.ai-assistant-suggestions {
    display: flex;
    flex-direction: column;
    gap: 8px;
    padding: 16px 18px 24px 18px;
}

.ai-assistant-suggestion {
    padding: 10px 14px;
    background: var(--mud-palette-surface, #ffffff);
    border: 1px solid var(--mud-palette-divider, rgba(0, 0, 0, 0.08));
    border-radius: 10px;
    font-size: 0.85rem;
    color: var(--mud-palette-text-primary);
    cursor: pointer;
    transition: all 0.15s ease;
    text-align: left;
    font-family: inherit;
}

.ai-assistant-suggestion:hover {
    background: rgba(99, 102, 241, 0.08);
    border-color: rgba(99, 102, 241, 0.3);
    transform: translateY(-1px);
}

/* ============================================================
   Input area
   ============================================================ */

.ai-assistant-input-area {
    padding: 12px 16px 16px 16px;
    border-top: 1px solid var(--mud-palette-divider, rgba(0, 0, 0, 0.08));
    background: var(--mud-palette-surface, #ffffff);
    flex-shrink: 0;
}

.ai-assistant-input-row {
    display: flex;
    align-items: flex-end;
    gap: 8px;
    background: var(--mud-palette-background-grey, #f9fafb);
    border: 1px solid var(--mud-palette-divider, rgba(0, 0, 0, 0.12));
    border-radius: 14px;
    padding: 6px 6px 6px 12px;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.ai-assistant-input-row:focus-within {
    border-color: #6366f1;
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.12);
}

.ai-assistant-input {
    flex: 1;
    border: none;
    background: transparent;
    outline: none;
    resize: none;
    font-family: inherit;
    font-size: 0.92rem;
    line-height: 1.45;
    color: var(--mud-palette-text-primary);
    padding: 6px 0;
    max-height: 120px;
}

.ai-assistant-input::placeholder {
    color: var(--mud-palette-text-secondary);
}

.ai-assistant-icon-button {
    width: 36px;
    height: 36px;
    border-radius: 10px;
    border: none;
    background: transparent;
    color: var(--mud-palette-text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.15s ease;
    flex-shrink: 0;
}

.ai-assistant-icon-button:hover:not(:disabled) {
    background: rgba(99, 102, 241, 0.1);
    color: #6366f1;
}

.ai-assistant-icon-button:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.ai-assistant-icon-button.send {
    background: linear-gradient(135deg, #6366f1, #8b5cf6);
    color: #ffffff;
}

.ai-assistant-icon-button.send:hover:not(:disabled) {
    background: linear-gradient(135deg, #4f46e5, #7c3aed);
    transform: scale(1.05);
}

.ai-assistant-icon-button.send:disabled {
    background: rgba(0, 0, 0, 0.08);
    color: rgba(0, 0, 0, 0.3);
}

.ai-assistant-icon-button.mic-listening {
    background: rgba(239, 68, 68, 0.12);
    color: #ef4444;
    animation: ai-mic-pulse 1.4s ease-in-out infinite;
}

@keyframes ai-mic-pulse {
    0%, 100% { box-shadow: 0 0 0 0 rgba(239, 68, 68, 0.4); }
    50% { box-shadow: 0 0 0 8px rgba(239, 68, 68, 0); }
}

.ai-assistant-footer {
    padding: 6px 16px 0 16px;
    font-size: 0.7rem;
    color: var(--mud-palette-text-secondary);
    text-align: center;
    opacity: 0.7;
}

/* ============================================================
   App bar trigger button
   ============================================================ */

.ai-assistant-app-bar-button {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    height: 38px;
    padding: 0 14px;
    border: none;
    border-radius: 10px;
    background: linear-gradient(135deg, #6366f1, #8b5cf6);
    color: #ffffff;
    font-family: inherit;
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    box-shadow: 0 2px 8px rgba(99, 102, 241, 0.3);
    transition: all 0.18s cubic-bezier(0.4, 0, 0.2, 1);
    margin: 0 8px;
    white-space: nowrap;
}

.ai-assistant-app-bar-button:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 14px rgba(99, 102, 241, 0.45);
    filter: brightness(1.08);
}

.ai-assistant-app-bar-button:active {
    transform: translateY(0);
}

.ai-assistant-app-bar-button.active {
    background: linear-gradient(135deg, #4f46e5, #7c3aed);
    box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.35), 0 4px 14px rgba(99, 102, 241, 0.45);
}

.ai-assistant-app-bar-button-label {
    line-height: 1;
}

@media (max-width: 768px) {
    .ai-assistant-app-bar-button-label {
        display: none;
    }

    .ai-assistant-app-bar-button {
        padding: 0 10px;
        gap: 0;
    }
}

@media (max-width: 600px) {
    .ai-assistant-resize-handle {
        display: none;
    }
}