/* ===================================================================
   VISUAL POLISH - ACCESSIBILITY
   Extracted from frontend/app.html (100% polish implementation)
   WCAG 2.1 AAA Compliant
   =================================================================== */

/* ===== Reduced Motion Support ===== */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }

    /* Disable transforms for reduced motion */
    button:hover:not(:disabled),
    .btn:hover:not(:disabled),
    .stat-card:hover,
    .document-card:hover,
    .channel-card:hover,
    .channel-option:hover:not(.coming-soon),
    .conversation-item:hover,
    .handoff-item:hover,
    .handoff-event-item:hover,
    .card:hover,
    .feature-card:hover {
        transform: none !important;
    }
}

/* ===== Keyboard Focus Indicators ===== */
*:focus {
    outline: none;
}

*:focus-visible {
    outline: 2px solid var(--primary-500, #5b6cff);
    outline-offset: 2px;
    border-radius: 2px;
}

/* Custom focus rings for interactive elements */
button:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible,
a:focus-visible {
    outline: none;
    box-shadow: var(--shadow-focus);
}

/* ===== Interactive Element Transform Hierarchy ===== */

/* Buttons - subtle lift (1px) */
button,
.btn,
.tab-button,
.nav-actions button {
    transition: all var(--transition-base, 200ms cubic-bezier(0.4, 0, 0.2, 1));
}

button:hover:not(:disabled),
.btn:hover:not(:disabled) {
    transform: translateY(-1px);
}

button:active:not(:disabled),
.btn:active:not(:disabled) {
    transform: translateY(0) scale(0.98);
    transition: all 80ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* Cards - pronounced lift (2px) */
.stat-card,
.document-card,
.channel-card,
.card,
.feature-card {
    transition: all var(--transition-base, 200ms cubic-bezier(0.4, 0, 0.2, 1));
}

.stat-card:hover,
.document-card:hover,
.channel-card:hover,
.card:hover,
.feature-card:hover,
.channel-option:hover:not(.coming-soon) {
    transform: translateY(-2px);
}

/* Small interactive elements - scale only */
.badge,
.status-badge,
.copy-btn {
    transition: all var(--transition-base, 200ms cubic-bezier(0.4, 0, 0.2, 1));
}

button.copy-btn:hover,
.badge:hover,
.status-badge:hover {
    transform: scale(1.1);
}

/* Ensure disabled buttons have no transform */
button:disabled,
.btn:disabled {
    transform: none !important;
    cursor: not-allowed;
}

/* ===== Input Focus Refinement ===== */
input:not([type="checkbox"]):not([type="radio"]):focus,
textarea:focus,
select:focus {
    outline: none;
    background: var(--bg-card, var(--bg-secondary));
    border-color: var(--primary-500, #5b6cff);
}

input:not([type="checkbox"]):not([type="radio"]):focus-visible,
textarea:focus-visible,
select:focus-visible {
    box-shadow: var(--shadow-focus), inset 0 1px 2px rgba(0, 0, 0, 0.02);
}

/* ===== Custom Scrollbars ===== */

/* Webkit (Chrome, Safari, Edge) */
.chat-messages::-webkit-scrollbar,
.documents-list::-webkit-scrollbar,
#inbox-sessions-list::-webkit-scrollbar,
.markdown-content pre::-webkit-scrollbar,
.carousel-container::-webkit-scrollbar,
.scrollable::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

.chat-messages::-webkit-scrollbar-track,
.documents-list::-webkit-scrollbar-track,
#inbox-sessions-list::-webkit-scrollbar-track,
.markdown-content pre::-webkit-scrollbar-track,
.carousel-container::-webkit-scrollbar-track,
.scrollable::-webkit-scrollbar-track {
    background: transparent;
}

.chat-messages::-webkit-scrollbar-thumb,
.documents-list::-webkit-scrollbar-thumb,
#inbox-sessions-list::-webkit-scrollbar-thumb,
.markdown-content pre::-webkit-scrollbar-thumb,
.carousel-container::-webkit-scrollbar-thumb,
.scrollable::-webkit-scrollbar-thumb {
    background: var(--border, rgba(0, 0, 0, 0.1));
    border-radius: 4px;
}

.chat-messages::-webkit-scrollbar-thumb:hover,
.documents-list::-webkit-scrollbar-thumb:hover,
#inbox-sessions-list::-webkit-scrollbar-thumb:hover,
.markdown-content pre::-webkit-scrollbar-thumb:hover,
.carousel-container::-webkit-scrollbar-thumb:hover,
.scrollable::-webkit-scrollbar-thumb:hover {
    background: var(--text-tertiary, rgba(0, 0, 0, 0.3));
}

/* Firefox */
.chat-messages,
.documents-list,
#inbox-sessions-list,
.markdown-content pre,
.carousel-container,
.scrollable {
    scrollbar-width: thin;
    scrollbar-color: var(--border, rgba(0, 0, 0, 0.1)) transparent;
}