/**
 * UX Utilities - E3 ux-polish
 * Toast notifications, skeleton loaders, error states with retry
 * Matches MiraiSignal dark theme (main.css variables)
 */

/* ===== Toast Notification System ===== */

.toast-container {
    position: fixed;
    top: 60px;
    right: 20px;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: 8px;
    pointer-events: none;
    max-width: 380px;
}

.toast {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    padding: 12px 16px;
    background: var(--bg-secondary, #121212);
    border: 1px solid var(--border-color, #282828);
    color: var(--text-primary, #e0dcd8);
    font-family: 'IBM Plex Mono', 'Galmuri11', monospace;
    font-size: 12px;
    line-height: 1.6;
    pointer-events: auto;
    transform: translateX(120%);
    opacity: 0;
    transition: transform 0.25s ease, opacity 0.25s ease;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.5);
    max-width: 380px;
    word-break: break-word;
}

.toast.toast-visible {
    transform: translateX(0);
    opacity: 1;
}

.toast.toast-exit {
    transform: translateX(120%);
    opacity: 0;
}

/* Toast severity variants */
.toast-info {
    border-left: 3px solid var(--accent-blue, #6888a8);
}

.toast-success {
    border-left: 3px solid var(--accent-green, #6a9a70);
}

.toast-warning {
    border-left: 3px solid var(--accent-gold, #c8a870);
}

.toast-error {
    border-left: 3px solid var(--accent-red, #a86868);
}

.toast-icon {
    flex-shrink: 0;
    width: 16px;
    height: 16px;
    margin-top: 2px;
    font-size: 14px;
    line-height: 1;
}

.toast-info .toast-icon { color: var(--accent-blue, #6888a8); }
.toast-success .toast-icon { color: var(--accent-green, #6a9a70); }
.toast-warning .toast-icon { color: var(--accent-gold, #c8a870); }
.toast-error .toast-icon { color: var(--accent-red, #a86868); }

.toast-body {
    flex: 1;
    min-width: 0;
}

.toast-title {
    font-weight: 600;
    font-size: 11px;
    text-transform: uppercase;
    margin-bottom: 2px;
}

.toast-info .toast-title { color: var(--accent-blue, #6888a8); }
.toast-success .toast-title { color: var(--accent-green, #6a9a70); }
.toast-warning .toast-title { color: var(--accent-gold, #c8a870); }
.toast-error .toast-title { color: var(--accent-red, #a86868); }

.toast-message {
    color: var(--text-secondary, #a0a098);
    font-size: 11px;
}

.toast-close {
    flex-shrink: 0;
    background: none;
    border: none;
    color: var(--text-dim, #606058);
    cursor: pointer;
    font-size: 14px;
    line-height: 1;
    padding: 0;
    margin-top: 1px;
    transition: color 0.15s;
}

.toast-close:hover {
    color: var(--text-primary, #e0dcd8);
}

/* Toast progress bar */
.toast-progress {
    position: absolute;
    bottom: 0;
    left: 0;
    height: 2px;
    background: var(--accent-gold, #c8a870);
    transition: width linear;
}

.toast-info .toast-progress { background: var(--accent-blue, #6888a8); }
.toast-success .toast-progress { background: var(--accent-green, #6a9a70); }
.toast-warning .toast-progress { background: var(--accent-gold, #c8a870); }
.toast-error .toast-progress { background: var(--accent-red, #a86868); }


/* ===== Skeleton Loading States ===== */

.skeleton {
    position: relative;
    overflow: hidden;
    background: var(--bg-tertiary, #1a1a1a);
    border-radius: 2px;
}

.skeleton::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(
        90deg,
        transparent 0%,
        rgba(255, 255, 255, 0.03) 40%,
        rgba(255, 255, 255, 0.06) 50%,
        rgba(255, 255, 255, 0.03) 60%,
        transparent 100%
    );
    animation: skeletonShimmer 1.8s infinite;
}

@keyframes skeletonShimmer {
    0%   { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

/* Skeleton variants */
.skeleton-text {
    height: 12px;
    width: 80%;
    margin-bottom: 8px;
}

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

.skeleton-card {
    height: 80px;
    width: 100%;
}

.skeleton-value {
    height: 22px;
    width: 100px;
    margin-top: 6px;
}

.skeleton-row {
    display: flex;
    gap: 12px;
    padding: 8px 12px;
    border-bottom: 1px solid var(--border-color, #282828);
}

.skeleton-row .skeleton-cell {
    height: 12px;
    flex: 1;
}

/* Skeleton summary grid */
.skeleton-summary {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 12px;
}

.skeleton-summary-card {
    background: var(--bg-secondary, #121212);
    border: 1px solid var(--border-color, #282828);
    padding: 16px;
}

.skeleton-summary-card .skeleton-label {
    height: 10px;
    width: 60px;
    margin-bottom: 10px;
}

@media (max-width: 900px) {
    .skeleton-summary {
        grid-template-columns: repeat(2, 1fr);
    }
}


/* ===== Error State with Retry ===== */

.error-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 32px 20px;
    text-align: center;
    gap: 12px;
}

.error-state-icon {
    font-size: 24px;
    color: var(--accent-red, #a86868);
    opacity: 0.7;
}

.error-state-title {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-primary, #e0dcd8);
}

.error-state-message {
    font-size: 11px;
    color: var(--text-dim, #606058);
    max-width: 320px;
    line-height: 1.6;
}

.error-state-retry {
    margin-top: 8px;
    padding: 6px 20px;
    font-family: 'IBM Plex Mono', 'Galmuri11', monospace;
    font-size: 11px;
    font-weight: 500;
    background: transparent;
    color: var(--accent-gold, #c8a870);
    border: 1px solid var(--accent-gold, #c8a870);
    cursor: pointer;
    transition: all 0.15s;
    text-transform: uppercase;
}

.error-state-retry:hover {
    background: var(--accent-gold, #c8a870);
    color: var(--bg-primary, #0a0a0a);
}

.error-state-retry:active {
    transform: scale(0.97);
}

.error-state-retry:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

/* Spinning state for retry button */
.error-state-retry.retrying {
    pointer-events: none;
    opacity: 0.6;
}

.error-state-retry.retrying::before {
    content: '';
    display: inline-block;
    width: 10px;
    height: 10px;
    border: 1.5px solid var(--accent-gold, #c8a870);
    border-top-color: transparent;
    border-radius: 50%;
    animation: retrySpinner 0.6s linear infinite;
    margin-right: 6px;
    vertical-align: middle;
}

@keyframes retrySpinner {
    to { transform: rotate(360deg); }
}


/* ===== Loading Overlay (for section-level loading) ===== */

.loading-overlay {
    position: relative;
}

.loading-overlay::before {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(10, 10, 10, 0.6);
    z-index: 10;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s;
}

.loading-overlay.is-loading::before {
    opacity: 1;
    pointer-events: auto;
}

.loading-overlay::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 20px;
    height: 20px;
    margin: -10px 0 0 -10px;
    border: 2px solid var(--border-color, #282828);
    border-top-color: var(--accent-gold, #c8a870);
    border-radius: 50%;
    z-index: 11;
    opacity: 0;
    pointer-events: none;
    animation: none;
    transition: opacity 0.2s;
}

.loading-overlay.is-loading::after {
    opacity: 1;
    animation: retrySpinner 0.7s linear infinite;
}


/* ===== Data Freshness Badge ===== */

.freshness-badge {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    font-size: 10px;
    font-family: 'IBM Plex Mono', 'Galmuri11', monospace;
    color: var(--text-dim, #606058);
    padding: 2px 8px;
    border: 1px solid var(--border-color, #282828);
    background: var(--bg-tertiary, #1a1a1a);
    transition: all 0.3s ease;
}

.freshness-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--accent-green, #6a9a70);
    transition: background 0.3s ease;
}

.freshness-badge.stale-warning .freshness-dot {
    background: var(--accent-gold, #c8a870);
}

.freshness-badge.stale-warning {
    border-color: rgba(200, 168, 112, 0.3);
}

.freshness-badge.stale-error .freshness-dot {
    background: var(--accent-red, #a86868);
}

.freshness-badge.stale-error {
    border-color: rgba(168, 104, 104, 0.3);
}

.freshness-badge .freshness-dot.pulse {
    animation: freshnessPulse 2s ease-in-out infinite;
}

@keyframes freshnessPulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.4; }
}


/* ===== Empty State (positive) ===== */

.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 40px 20px;
    text-align: center;
    gap: 12px;
}

.empty-state-mascot {
    width: 80px;
    height: 80px;
    opacity: 0.6;
    margin-bottom: 4px;
}

.empty-state-title {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-primary, #e0dcd8);
}

.empty-state-message {
    font-size: 11px;
    color: var(--text-dim, #606058);
    max-width: 300px;
    line-height: 1.6;
}


/* ===== Sortable Table Headers ===== */

.sortable-th {
    cursor: pointer;
    user-select: none;
    transition: color 0.15s;
    white-space: nowrap;
}

.sortable-th:hover {
    color: var(--accent-gold, #c8a870);
}

.sortable-th .sort-indicator {
    display: inline-block;
    margin-left: 3px;
    font-size: 9px;
    opacity: 0.3;
    transition: opacity 0.15s;
}

.sortable-th.sort-active .sort-indicator {
    opacity: 1;
    color: var(--accent-gold, #c8a870);
}

.sortable-th.sort-active {
    color: var(--accent-gold, #c8a870);
}


/* ===== Fade-in for loaded content ===== */

.fade-in {
    animation: fadeIn 0.2s ease-in;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(4px); }
    to   { opacity: 1; transform: translateY(0); }
}