/* === Wallpaper Engine === */
.app-wallpaper-engine { /* Main Frame */
    display: flex;
    flex-direction: column;
    gap: 14px;
    height: 100%;
    padding: 16px;
    color: var(--text-primary);
    overflow-y: auto;
}

.wp-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
}

.wp-header h3 {
    margin: 0;
    font-size: 20px;
    font-weight: 700;
    letter-spacing: 0.2px;
}

.wp-header p {
    margin: 6px 0 0;
    color: var(--text-muted);
    font-size: 13px;
    line-height: 1.45;
}

.wp-active-pill {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 14px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid var(--border);
    color: var(--text-secondary);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    white-space: nowrap;
}

.wp-active-pill .material-icons-round {
    font-size: 18px;
    color: var(--accent);
}

.wp-toolbar {
    display: grid;
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 10px;
}

.wp-toolbar button,
.wp-random-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    border: 1px solid var(--border);
    border-radius: 16px;
    background: rgba(255, 255, 255, 0.06);
    color: var(--text-secondary);
    padding: 12px 10px;
    font: inherit;
    font-size: 12px;
    cursor: pointer;
    transition: transform var(--transition), background var(--transition), border-color var(--transition), color var(--transition), box-shadow var(--transition);
}

.wp-toolbar button:hover,
.wp-random-btn:hover {
    transform: translateY(-1px);
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
    border-color: color-mix(in srgb, var(--accent) 45%, transparent);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.14);
}

.wp-toolbar button.active {
    background: linear-gradient(135deg, color-mix(in srgb, var(--accent) 34%, transparent), rgba(255, 255, 255, 0.08));
    border-color: color-mix(in srgb, var(--accent) 60%, transparent);
    color: var(--text-primary);
}

.wp-toolbar button .material-icons-round {
    font-size: 18px;
}

.wp-url-box {
    display: flex;
    gap: 10px;
    background: rgba(255, 255, 255, 0.04);
    padding: 10px;
    border-radius: 16px;
    border: 1px solid var(--border);
}

#wp-url-input {
    flex: 1;
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 8px 14px;
    color: var(--text-primary);
    font-size: 13px;
    outline: none;
    transition: border-color var(--transition), background var(--transition);
}

#wp-url-input:focus {
    border-color: var(--accent);
    background: rgba(0, 0, 0, 0.3);
}

.wp-url-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--accent);
    color: #fff;
    border: none;
    border-radius: 10px;
    padding: 0 16px;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: transform var(--transition), filter var(--transition);
}

.wp-url-btn:hover {
    filter: brightness(1.1);
    transform: translateY(-1px);
}

.wp-url-btn:active {
    transform: translateY(0);
}

.wp-display {
    position: relative;
    flex: 1;
    min-height: 320px;
    overflow: hidden;
    border-radius: 24px;
    border: 1px solid var(--border);
    background:
        radial-gradient(circle at top left, rgba(255, 255, 255, 0.16), transparent 35%),
        rgba(0, 0, 0, 0.28);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.08), 0 20px 50px rgba(0, 0, 0, 0.25);
}

.wp-preview-video {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0;
    transition: opacity 260ms ease;
    z-index: 0;
    pointer-events: none;
}

.wp-preview-video.active {
    opacity: 1;
}

.wp-preview-youtube {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    display: none;
    transition: opacity 240ms ease;
    z-index: 0;
    pointer-events: none;
    border: none;
}

.wp-preview-youtube.active {
    opacity: 1;
    display: block;
}

.wp-display::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        linear-gradient(135deg, rgba(255, 255, 255, 0.08), transparent 30%),
        linear-gradient(45deg, rgba(255, 255, 255, 0.04), transparent 50%);
    pointer-events: none;
    z-index: 2;
}

.wp-display::after {
    content: 'Preview';
    position: absolute;
    top: 14px;
    left: 14px;
    z-index: 3;
    padding: 6px 10px;
    border-radius: 999px;
    background: rgba(0, 0, 0, 0.22);
    color: rgba(255, 255, 255, 0.8);
    font-size: 11px;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.wp-bg {
    position: absolute;
    inset: 0;
    opacity: 0;
    transform: scale(1.08);
    transition: opacity 260ms ease, transform 320ms ease;
    filter: saturate(1.05);
    z-index: 1;
}

.wp-bg.active {
    opacity: 1;
    transform: scale(1);
}

.wp-bg.nature {
    background:
        radial-gradient(circle at 20% 18%, rgba(255, 255, 255, 0.22), transparent 20%),
        radial-gradient(circle at 82% 20%, rgba(72, 187, 120, 0.38), transparent 28%),
        linear-gradient(135deg, rgba(17, 24, 39, 0.25), rgba(6, 95, 70, 0.4)),
        url('../Resources/background.png') center/cover no-repeat;
}

.wp-bg.space {
    background:
        radial-gradient(circle at 18% 20%, rgba(255, 255, 255, 0.32), transparent 6%),
        radial-gradient(circle at 72% 30%, rgba(59, 130, 246, 0.34), transparent 18%),
        radial-gradient(circle at 88% 72%, rgba(167, 139, 250, 0.24), transparent 20%),
        linear-gradient(135deg, #050816, #0b1a35 55%, #182852);
}

.wp-bg.abstract {
    background:
        radial-gradient(circle at 28% 24%, rgba(251, 191, 36, 0.28), transparent 18%),
        radial-gradient(circle at 70% 25%, rgba(244, 114, 182, 0.28), transparent 22%),
        radial-gradient(circle at 72% 82%, rgba(34, 211, 238, 0.24), transparent 20%),
        linear-gradient(135deg, #1a0533, #2c1655 45%, #5a189a);
}

.wp-bg.ocean {
    background:
        radial-gradient(circle at 18% 24%, rgba(255, 255, 255, 0.18), transparent 16%),
        radial-gradient(circle at 70% 18%, rgba(56, 189, 248, 0.3), transparent 25%),
        linear-gradient(135deg, #07111f, #0f3550 52%, #0f766e);
}

.wp-bg.city {
    background:
        linear-gradient(to bottom, rgba(255, 255, 255, 0.14), transparent 20%),
        radial-gradient(circle at 50% 12%, rgba(253, 224, 71, 0.28), transparent 16%),
        linear-gradient(180deg, #0f172a 0%, #132238 46%, #334155 100%);
}

.wp-bg.city::after {
    content: '';
    position: absolute;
    inset: auto 0 0;
    height: 38%;
    background:
        linear-gradient(180deg, transparent, rgba(0, 0, 0, 0.16)),
        repeating-linear-gradient(
            90deg,
            rgba(15, 23, 42, 0.9) 0 18px,
            rgba(30, 41, 59, 0.96) 18px 28px
        );
    clip-path: polygon(0 36%, 4% 28%, 8% 34%, 13% 20%, 18% 38%, 24% 16%, 30% 42%, 36% 24%, 42% 50%, 50% 22%, 58% 45%, 66% 20%, 72% 44%, 78% 24%, 86% 38%, 92% 18%, 100% 32%, 100% 100%, 0 100%);
    opacity: 0.7;
}

.wp-footer {
    display: flex;
    flex-direction: column;
    gap: 16px;
    padding-top: 16px;
    border-top: 1px solid var(--border);
}

.wp-system-info {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
}

.wp-expand-btn {
    display: flex;
    align-items: center;
    gap: 4px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border);
    border-radius: 20px;
    padding: 4px 12px;
    color: var(--text-secondary);
    font-size: 11px;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition);
}

.wp-expand-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
    border-color: var(--accent);
}

.wp-details-panel {
    background: rgba(0, 0, 0, 0.2);
    border-radius: 12px;
    padding: 12px;
    border: 1px solid var(--border);
    animation: slideDown 0.3s ease-out;
}

.wp-details-panel.hidden {
    display: none;
}

.wp-details-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 12px;
}

.wp-detail-cell {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.wp-detail-label {
    font-size: 9px;
    text-transform: uppercase;
    color: var(--text-muted);
    letter-spacing: 0.05em;
}

.wp-detail-val {
    font-size: 12px;
    font-weight: 600;
    color: var(--text-secondary);
}

@keyframes slideDown {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Image Upload Preview Overlay */
.wp-img-preview-overlay {
    position: fixed;
    inset: 0;
    z-index: 10000;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: center;
    animation: wpPreviewFadeIn 0.2s ease-out;
}

@keyframes wpPreviewFadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.wp-img-preview-card {
    position: relative;
    width: 90vw;
    max-width: 820px;
    max-height: 80vh;
    background: rgba(22, 22, 30, 0.96);
    border: 1px solid var(--border);
    border-radius: 20px;
    box-shadow: 0 32px 80px rgba(0, 0, 0, 0.6);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    animation: wpPreviewSlideUp 0.25s ease-out;
}

@keyframes wpPreviewSlideUp {
    from { opacity: 0; transform: translateY(24px) scale(0.97); }
    to { opacity: 1; transform: translateY(0) scale(1); }
}

.wp-img-preview-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 18px;
    border-bottom: 1px solid var(--border);
}

.wp-img-preview-title {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--text-primary);
    font-size: 14px;
    font-weight: 600;
}

.wp-img-preview-title .material-icons-round {
    color: var(--accent);
    font-size: 20px;
}

.wp-img-preview-close {
    background: rgba(255, 255, 255, 0.08);
    border: none;
    border-radius: 50%;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    cursor: pointer;
    transition: background var(--transition), color var(--transition);
}

.wp-img-preview-close:hover {
    background: rgba(255, 255, 255, 0.16);
    color: var(--text-primary);
}

.wp-img-preview-body {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 16px;
    min-height: 200px;
    max-height: 60vh;
    overflow: hidden;
}

.wp-img-preview-body img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    border-radius: 12px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

.wp-img-preview-footer {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 10px;
    padding: 12px 18px;
    border-top: 1px solid var(--border);
}

.wp-img-preview-cancel,
.wp-img-preview-confirm {
    padding: 10px 22px;
    border-radius: 12px;
    font: inherit;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: transform var(--transition), background var(--transition), border-color var(--transition), box-shadow var(--transition);
}

.wp-img-preview-cancel {
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid var(--border);
    color: var(--text-secondary);
}

.wp-img-preview-cancel:hover {
    background: rgba(255, 255, 255, 0.12);
    color: var(--text-primary);
}

.wp-img-preview-confirm {
    background: var(--accent);
    border: 1px solid transparent;
    color: #fff;
}

.wp-img-preview-confirm:hover {
    filter: brightness(1.12);
    transform: translateY(-1px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.25);
}

.wp-info-item {
    display: flex;
    align-items: center;
    gap: 10px;
}

.wp-info-item .material-icons-round {
    color: var(--accent);
    font-size: 20px;
    opacity: 0.8;
}

.wp-info-text {
    display: flex;
    flex-direction: column;
}

.wp-info-label {
    font-size: 10px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
    margin-bottom: 2px;
}

#wp-screen-res {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-primary);
}

.wp-select {
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text-primary);
    padding: 4px 8px;
    font-size: 12px;
    font-family: inherit;
    outline: none;
    cursor: pointer;
    transition: background var(--transition), border-color var(--transition);
}

.wp-select:hover {
    background: rgba(255, 255, 255, 0.12);
    border-color: var(--accent);
}

.wp-select option {
    background: #1a1a1a;
    color: #fff;
}

.wp-actions {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
    justify-content: flex-end;
}

.wp-note {
    color: var(--text-muted);
    font-size: 12px;
}

.wp-action-btn {
    min-width: 132px;
    padding: 12px 18px;
    border-radius: 18px;
    border: 1px solid var(--border);
    background: rgba(255, 255, 255, 0.06);
    color: var(--text-primary);
    font: inherit;
    font-size: 12px;
    cursor: pointer;
    transition: transform var(--transition), background var(--transition), border-color var(--transition), box-shadow var(--transition);
}

.wp-action-btn:hover {
    transform: translateY(-1px);
    background: rgba(255, 255, 255, 0.1);
    border-color: color-mix(in srgb, var(--accent) 45%, transparent);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.14);
}

.wp-img-btn {
    min-width: 132px;
    padding: 12px 18px;
    border-radius: 18px;
    border: 1px solid var(--border);
    background: rgba(255, 255, 255, 0.06);
    color: var(--text-primary);
    font: inherit;
    font-size: 12px;
    cursor: pointer;
    transition: transform var(--transition), background var(--transition), border-color var(--transition), box-shadow var(--transition);
}

.wp-img-btn:hover {
    transform: translateY(-1px);
    background: rgba(255, 255, 255, 0.1);
    border-color: color-mix(in srgb, var(--accent) 45%, transparent);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.14);
}

.wp-random-btn {
    min-width: 128px;
    padding-inline: 18px;
    background: color-mix(in srgb, var(--accent) 18%, rgba(255, 255, 255, 0.06));
    color: var(--text-primary);
}

@media (max-width: 720px) {
    .app-wallpaper-engine {
        padding: 12px;
    }

    .wp-header {
        align-items: flex-start;
        flex-direction: column;
    }

    .wp-toolbar {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .wp-footer {
        flex-direction: column;
        align-items: stretch;
    }

    .wp-actions {
        justify-content: stretch;
    }

    .wp-action-btn,
    .wp-random-btn {
        width: 100%;
    }

    .wp-actions {
        flex-direction: column;
    }
}


/* ── Image-URL Preview panel inside wp-display ── */
.wp-preview-img-url {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0;
    transition: opacity 300ms ease;
    z-index: 1;
    pointer-events: none;
}
 
.wp-preview-img-url.active {
    opacity: 1;
}
 
/* ── URL input row — Smart Load button variant ── */
.wp-url-row {
    display: flex;
    gap: 10px;
    background: rgba(255, 255, 255, 0.04);
    padding: 10px;
    border-radius: 16px;
    border: 1px solid var(--border);
}
 
.wp-url-row .wp-url-input {
    flex: 1;
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 8px 14px;
    color: var(--text-primary);
    font-size: 13px;
    outline: none;
    transition: border-color var(--transition), background var(--transition);
}
 
.wp-url-row .wp-url-input:focus {
    border-color: var(--accent);
    background: rgba(0, 0, 0, 0.3);
}
 
.wp-url-row .wp-url-input::placeholder {
    color: var(--text-muted);
}
 
/* Smart Load — auto-detects image vs video */
.wp-smart-load-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--accent);
    color: #fff;
    border: none;
    border-radius: 10px;
    padding: 0 16px;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    white-space: nowrap;
    transition: transform var(--transition), filter var(--transition);
}
 
.wp-smart-load-btn:hover {
    filter: brightness(1.12);
    transform: translateY(-1px);
}
 
.wp-smart-load-btn:active {
    transform: translateY(0);
}
 
/* ── URL image preview overlay (remote URL flow) ── */
.wp-url-img-preview-overlay {
    position: fixed;
    inset: 0;
    z-index: 10000;
    background: rgba(0, 0, 0, 0.72);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    display: flex;
    align-items: center;
    justify-content: center;
    animation: wpPreviewFadeIn 0.2s ease-out;
}
 
.wp-url-img-loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    color: var(--text-secondary);
    font-size: 13px;
}
 
.wp-url-img-loading .material-icons-round {
    font-size: 36px;
    color: var(--accent);
}
 
@keyframes wpUrlSpin {
    from { transform: rotate(0deg); }
    to   { transform: rotate(360deg); }
}
 
.wp-url-spin {
    animation: wpUrlSpin 1s linear infinite;
}
 
.wp-img-preview-url-tag {
    padding: 6px 18px 10px;
    font-size: 11px;
    color: var(--text-muted);
    letter-spacing: 0.02em;
    word-break: break-all;
    border-top: 1px solid var(--border);
}
 
/* Disabled confirm button */
.wp-img-preview-confirm:disabled {
    opacity: 0.4;
    cursor: not-allowed;
    transform: none !important;
    filter: none !important;
}
 
/* ── HQ Video desktop optimizations ── */
#desktop-wallpaper-video {
    /* Force GPU compositing for buttery HQ playback */
    will-change: transform;
    transform: translateZ(0);
    backface-visibility: hidden;
    -webkit-backface-visibility: hidden;
 
    /* Crisp pixels, no downscale blur */
    image-rendering: high-quality;
    image-rendering: -webkit-optimize-contrast;
 
    /* Prevent browser from throttling background tab video */
    contain: strict;
}
 
.wp-preview-video {
    /* Same GPU hints for preview */
    will-change: transform;
    transform: translateZ(0);
    backface-visibility: hidden;
    image-rendering: high-quality;
}
 
/* ── Kind badge inside preview (shows "Image" / "Video" / "YouTube") ── */
.wp-kind-badge {
    position: absolute;
    bottom: 14px;
    right: 14px;
    z-index: 4;
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 5px 10px;
    border-radius: 999px;
    background: rgba(0, 0, 0, 0.38);
    color: rgba(255, 255, 255, 0.85);
    font-size: 11px;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    pointer-events: none;
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
    border: 1px solid rgba(255,255,255,0.12);
    transition: opacity 0.2s;
}
 
.wp-kind-badge .material-icons-round {
    font-size: 14px;
}
 
/* ── URL type hint chips under input ── */
.wp-url-hint {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
    padding: 0 2px;
    margin-top: -4px;
}
 
.wp-url-hint-chip {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 3px 9px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid var(--border);
    color: var(--text-muted);
    font-size: 10px;
    letter-spacing: 0.04em;
    pointer-events: none;
}
 
.wp-url-hint-chip .material-icons-round {
    font-size: 12px;
}