/* ===================================================================
   VISUAL POLISH - COMPONENTS
   Extracted from frontend/app.html (100% polish implementation)
   Includes: Tooltips, Skeleton Loaders, Syntax Highlighting
   =================================================================== */

/* ===================================================================
   SKELETON LOADING STATES
   =================================================================== */

.skeleton {
    background: linear-gradient(
        90deg,
        var(--bg-secondary, #f5f5f5) 0%,
        var(--bg-tertiary, #e0e0e0) 50%,
        var(--bg-secondary, #f5f5f5) 100%
    );
    background-size: 200% 100%;
    animation: shimmer 1.5s ease-in-out infinite;
    border-radius: var(--radius-md, 8px);
}

@keyframes shimmer {
    0% { background-position: -200% 0; }
    100% { background-position: 200% 0; }
}

/* Disable shimmer for reduced motion */
@media (prefers-reduced-motion: reduce) {
    .skeleton {
        animation: none;
        background: var(--bg-tertiary, #e0e0e0);
    }
}

/* ===== Skeleton Variants ===== */

.skeleton-text {
    height: 1rem;
    border-radius: var(--radius-sm, 4px);
}

.skeleton-text.short { width: 40%; }
.skeleton-text.medium { width: 60%; }
.skeleton-text.long { width: 80%; }

.skeleton-title {
    height: 1.5rem;
    width: 50%;
    border-radius: var(--radius-sm, 4px);
}

.skeleton-card {
    height: 120px;
    border-radius: var(--radius-lg, 12px);
}

.skeleton-stat {
    height: 2.5rem;
    width: 4rem;
    border-radius: var(--radius-md, 8px);
}

.skeleton-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
}

.skeleton-button {
    height: 40px;
    width: 100px;
    border-radius: var(--radius-md, 8px);
}

/* ===== Complex Skeleton Components ===== */

.skeleton-document {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 16px;
    background: var(--bg-card, #ffffff);
    border-radius: var(--radius-lg, 12px);
}

.skeleton-document-icon {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md, 8px);
    flex-shrink: 0;
}

.skeleton-document-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.skeleton-document-actions {
    width: 80px;
    height: 32px;
    border-radius: var(--radius-md, 8px);
}

.skeleton-inbox-session {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 12px 16px;
    background: var(--bg-card, #ffffff);
    border-radius: var(--radius-md, 8px);
}

.skeleton-inbox-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.skeleton-stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
}

.skeleton-stat-card {
    padding: 1.5rem;
    background: var(--bg-card, #ffffff);
    border-radius: var(--radius-lg, 12px);
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

/* ===================================================================
   LIGHTWEIGHT TOOLTIPS (Pure CSS)
   =================================================================== */

[data-tooltip] {
    position: relative;
}

[data-tooltip]::before {
    content: attr(data-tooltip);
    position: absolute;
    bottom: calc(100% + 8px);
    left: 50%;
    transform: translateX(-50%) translateY(-4px);
    padding: 0.5rem 0.75rem;
    background: var(--gray-900, #1a1a1a);
    color: var(--gray-50, #f9f9f9);
    font-size: 0.75rem;
    font-weight: 500;
    line-height: 1.2;
    white-space: nowrap;
    border-radius: var(--radius-sm, 4px);
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-base, 200ms), transform var(--transition-base, 200ms);
    z-index: 1000;
}

[data-tooltip]::after {
    content: '';
    position: absolute;
    bottom: calc(100% + 2px);
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 0;
    border: 6px solid transparent;
    border-top-color: var(--gray-900, #1a1a1a);
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-base, 200ms);
    z-index: 1000;
}

/* Dark mode tooltip colors */
[data-theme="dark"] [data-tooltip]::before {
    background: var(--gray-50, #f9f9f9);
    color: var(--gray-900, #1a1a1a);
}

[data-theme="dark"] [data-tooltip]::after {
    border-top-color: var(--gray-50, #f9f9f9);
}

/* Show tooltip on hover AND keyboard focus (accessibility) */
[data-tooltip]:hover::before,
[data-tooltip]:focus-visible::before,
[data-tooltip]:hover::after,
[data-tooltip]:focus-visible::after {
    opacity: 1;
}

[data-tooltip]:hover::before,
[data-tooltip]:focus-visible::before {
    transform: translateX(-50%) translateY(0);
}

/* ===== Tooltip Positions ===== */

/* Top (default) */
[data-tooltip][data-tooltip-pos="top"]::before {
    bottom: calc(100% + 8px);
    top: auto;
}

/* Bottom */
[data-tooltip][data-tooltip-pos="bottom"]::before {
    bottom: auto;
    top: calc(100% + 8px);
    transform: translateX(-50%) translateY(4px);
}

[data-tooltip][data-tooltip-pos="bottom"]:hover::before,
[data-tooltip][data-tooltip-pos="bottom"]:focus-visible::before {
    transform: translateX(-50%) translateY(0);
}

[data-tooltip][data-tooltip-pos="bottom"]::after {
    bottom: auto;
    top: calc(100% + 2px);
    border-top-color: transparent;
    border-bottom-color: var(--gray-900, #1a1a1a);
}

[data-theme="dark"] [data-tooltip][data-tooltip-pos="bottom"]::after {
    border-bottom-color: var(--gray-50, #f9f9f9);
}

/* Left */
[data-tooltip][data-tooltip-pos="left"]::before {
    bottom: auto;
    top: 50%;
    left: auto;
    right: calc(100% + 8px);
    transform: translateX(4px) translateY(-50%);
}

[data-tooltip][data-tooltip-pos="left"]:hover::before,
[data-tooltip][data-tooltip-pos="left"]:focus-visible::before {
    transform: translateX(0) translateY(-50%);
}

[data-tooltip][data-tooltip-pos="left"]::after {
    top: 50%;
    right: calc(100% + 2px);
    left: auto;
    bottom: auto;
    transform: translateY(-50%);
    border-top-color: transparent;
    border-right-color: var(--gray-900, #1a1a1a);
}

[data-theme="dark"] [data-tooltip][data-tooltip-pos="left"]::after {
    border-right-color: var(--gray-50, #f9f9f9);
}

/* Right */
[data-tooltip][data-tooltip-pos="right"]::before {
    bottom: auto;
    top: 50%;
    left: calc(100% + 8px);
    transform: translateX(-4px) translateY(-50%);
}

[data-tooltip][data-tooltip-pos="right"]:hover::before,
[data-tooltip][data-tooltip-pos="right"]:focus-visible::before {
    transform: translateX(0) translateY(-50%);
}

[data-tooltip][data-tooltip-pos="right"]::after {
    top: 50%;
    left: calc(100% + 2px);
    right: auto;
    bottom: auto;
    transform: translateY(-50%);
    border-top-color: transparent;
    border-left-color: var(--gray-900, #1a1a1a);
}

[data-theme="dark"] [data-tooltip][data-tooltip-pos="right"]::after {
    border-left-color: var(--gray-50, #f9f9f9);
}

/* Hide tooltips on touch devices */
@media (hover: none) {
    [data-tooltip]::before,
    [data-tooltip]::after {
        display: none;
    }
}

/* Disable tooltip animation for reduced motion */
@media (prefers-reduced-motion: reduce) {
    [data-tooltip]::before,
    [data-tooltip]::after {
        transition: none;
    }
}

/* ===================================================================
   CODE SYNTAX HIGHLIGHTING (Material Palenight)
   =================================================================== */

.markdown-content pre code .keyword,
.markdown-content pre code .k {
    color: #c792ea;  /* Purple */
    font-weight: 600;
}

.markdown-content pre code .string,
.markdown-content pre code .s {
    color: #c3e88d;  /* Green */
}

.markdown-content pre code .number,
.markdown-content pre code .n {
    color: #f78c6c;  /* Orange */
}

.markdown-content pre code .comment,
.markdown-content pre code .c {
    color: var(--text-tertiary, #888);
    font-style: italic;
    opacity: 0.8;
}

.markdown-content pre code .function,
.markdown-content pre code .f {
    color: #82aaff;  /* Blue */
}

.markdown-content pre code .operator,
.markdown-content pre code .o {
    color: #89ddff;  /* Cyan */
}

.markdown-content pre code .variable,
.markdown-content pre code .v {
    color: #f07178;  /* Red */
}

.markdown-content pre code .class,
.markdown-content pre code .cl {
    color: #ffcb6b;  /* Yellow */
}

.markdown-content pre code .property,
.markdown-content pre code .p {
    color: #f07178;  /* Red */
}

.markdown-content pre code .tag,
.markdown-content pre code .t {
    color: #f07178;  /* Red */
}

.markdown-content pre code .attribute,
.markdown-content pre code .a {
    color: #c792ea;  /* Purple */
}

.markdown-content pre code .boolean,
.markdown-content pre code .b {
    color: #ff5370;  /* Bright red */
}

.markdown-content pre code .constant,
.markdown-content pre code .co {
    color: #f78c6c;  /* Orange */
}

/* ===== Dark Mode Syntax Adjustments ===== */

[data-theme="dark"] .markdown-content pre code :is(.keyword, .k, .attribute, .a) {
    color: #bb9af7;  /* Lighter purple */
}

[data-theme="dark"] .markdown-content pre code :is(.string, .s) {
    color: #9ece6a;  /* Brighter green */
}

[data-theme="dark"] .markdown-content pre code :is(.number, .n, .constant, .co) {
    color: #ff9e64;  /* Brighter orange */
}

[data-theme="dark"] .markdown-content pre code :is(.function, .f) {
    color: #7aa2f7;  /* Brighter blue */
}

[data-theme="dark"] .markdown-content pre code :is(.variable, .v, .property, .p, .tag, .t) {
    color: #ff757f;  /* Brighter red for better contrast */
}

[data-theme="dark"] .markdown-content pre code :is(.operator, .o) {
    color: #89ddff;  /* Bright cyan */
}

[data-theme="dark"] .markdown-content pre code :is(.class, .c) {
    color: #ffcb6b;  /* Bright yellow */
}

[data-theme="dark"] .markdown-content pre code :is(.boolean, .b) {
    color: #ff6b81;  /* Bright pink-red */
}