/* ============================================
   Video to GIF Converter - style-video-gif.css
   vtg- prefixes, blue theme, dark mode
   ============================================ */

:root {
    --vtg-primary:       #3399cc;
    --vtg-primary-light: rgba(51,153,204,0.12);
    --vtg-primary-dark:  #2277aa;
    --vtg-success:       #339966;
    --vtg-success-light: rgba(51,153,102,0.12);
    --vtg-danger:        #e64e4e;
    --vtg-warning:       #e6a020;

    --vtg-bg:            #f8fafc;
    --vtg-bg-elevated:   #ffffff;
    --vtg-bg-secondary:  #f1f5f9;

    --vtg-text:          #1e293b;
    --vtg-text-2:        #64748b;
    --vtg-text-muted:    #94a3b8;

    --vtg-border:        #e2e8f0;
    --vtg-border-focus:  #3399cc;

    --vtg-shadow-sm:  0 1px 3px rgba(0,0,0,0.08);
    --vtg-shadow-md:  0 4px 12px rgba(0,0,0,0.08);
    --vtg-shadow-lg:  0 8px 24px rgba(0,0,0,0.1);

    --vtg-r-sm:   6px;
    --vtg-r-md:   10px;
    --vtg-r-lg:   14px;
    --vtg-r-full: 9999px;

    --vtg-ease: 0.2s ease;
}

[data-theme="dark"] {
    --vtg-primary:       #4db8e8;
    --vtg-primary-light: rgba(77,184,232,0.15);
    --vtg-primary-dark:  #3399cc;
    --vtg-success:       #4ade80;
    --vtg-success-light: rgba(74,222,128,0.15);
    --vtg-danger:        #f87171;
    --vtg-warning:       #fbbf24;

    --vtg-bg:            #0f172a;
    --vtg-bg-elevated:   #1e293b;
    --vtg-bg-secondary:  #334155;

    --vtg-text:          #f1f5f9;
    --vtg-text-2:        #94a3b8;
    --vtg-text-muted:    #64748b;

    --vtg-border:        #334155;
    --vtg-border-focus:  #4db8e8;

    --vtg-shadow-sm: 0 1px 3px rgba(0,0,0,0.3);
    --vtg-shadow-md: 0 4px 12px rgba(0,0,0,0.4);
    --vtg-shadow-lg: 0 8px 24px rgba(0,0,0,0.5);
}

/* ---- Reset ---- */
* { box-sizing: border-box; }

/* ---- Override global overflow: hidden on .tool-main ---- */
.tool-main { overflow: visible !important; }

/* ---- Container ---- */
.tool-container { max-width: 1000px; margin: 0 auto; padding: 2rem; }

/* ---- Header ---- */
.tool-header { text-align: center; margin-bottom: 2rem; }
.tool-title-row {
    display: flex; align-items: center; justify-content: center;
    gap: 0.875rem; margin-bottom: 0.875rem;
}
.tool-icon-inline { width: 42px; height: 42px; color: var(--vtg-primary); flex-shrink: 0; }
.tool-title {
    font-size: clamp(1.75rem, 5vw, 2.75rem);
    font-weight: 700; margin: 0;
    color: var(--vtg-primary); letter-spacing: -0.02em;
}
.tool-description {
    font-size: 1.05rem; color: var(--vtg-text-2);
    max-width: 800px; margin: 0 auto; line-height: 1.7;
}

/* ---- Main Panel ---- */
.vtg-tool-main {
    background: var(--vtg-bg-elevated);
    border-radius: var(--vtg-r-lg);
    box-shadow: var(--vtg-shadow-lg);
    border: 1px solid var(--vtg-border);
    overflow: hidden;
    transition: background var(--vtg-ease), border-color var(--vtg-ease);
}

/* ---- Upload ---- */
.vtg-upload-section { padding: 2.5rem; }
.vtg-upload-area {
    border: 2px dashed var(--vtg-border);
    border-radius: var(--vtg-r-lg);
    padding: 3.5rem 2rem;
    text-align: center;
    cursor: pointer;
    background: var(--vtg-bg);
    transition: all 0.25s ease;
}
.vtg-upload-area:hover,
.vtg-upload-area.dragover,
.vtg-upload-area.active {
    border-color: var(--vtg-primary);
    background: var(--vtg-primary-light);
    transform: translateY(-2px);
    box-shadow: var(--vtg-shadow-md);
}
.vtg-upload-icon { color: var(--vtg-primary); margin-bottom: 1.25rem; transition: transform 0.25s ease; }
.vtg-upload-area:hover .vtg-upload-icon { transform: translateY(-5px); }
.vtg-upload-title { font-size: 1.3rem; font-weight: 600; color: var(--vtg-text); margin: 0 0 0.35rem; }
.vtg-upload-subtitle { color: var(--vtg-text-2); margin: 0 0 1rem; }
.vtg-file-types { display: flex; gap: 0.5rem; justify-content: center; flex-wrap: wrap; margin-bottom: 1rem; }
.vtg-file-type-badge {
    background: var(--vtg-primary-light); color: var(--vtg-primary);
    padding: 0.28rem 0.75rem; border-radius: var(--vtg-r-full);
    font-size: 0.77rem; font-weight: 600;
}
.vtg-upload-hint {
    display: inline-flex; align-items: center; gap: 0.4rem;
    background: var(--vtg-bg-secondary); color: var(--vtg-text-muted);
    padding: 0.38rem 0.875rem; border-radius: var(--vtg-r-full); font-size: 0.82rem;
}

/* ---- Progress ---- */
.vtg-progress-container {
    padding: 1.25rem 2rem;
    background: var(--vtg-bg-secondary);
    border-bottom: 1px solid var(--vtg-border);
}
.vtg-progress-bar-wrapper {
    height: 7px; background: var(--vtg-border);
    border-radius: var(--vtg-r-full); overflow: hidden; margin-bottom: 0.5rem;
}
.vtg-progress-bar {
    height: 100%; background: var(--vtg-primary);
    border-radius: var(--vtg-r-full); width: 0%;
    transition: width 0.3s ease;
}
.vtg-progress-text { font-size: 0.85rem; color: var(--vtg-text-2); text-align: center; display: block; }
.vtg-cancel-btn {
    display: inline-flex; align-items: center; gap: 0.4rem;
    margin: 0.75rem auto 0; padding: 0.4rem 0.9rem;
    background: transparent; color: var(--vtg-danger);
    border: 1px solid var(--vtg-danger); border-radius: var(--vtg-r-full);
    font-size: 0.82rem; font-weight: 500; cursor: pointer;
    transition: background 0.15s ease;
}
.vtg-cancel-btn:hover { background: rgba(230,78,78,0.12); }
.vtg-progress-container { text-align: center; }

/* ---- Error ---- */
.vtg-error-container {
    display: flex; flex-direction: column; gap: 0.4rem;
    padding: 1rem 1.5rem; margin: 1rem 2rem;
    background: rgba(230,78,78,0.08);
    border: 1px solid var(--vtg-danger);
    border-radius: var(--vtg-r-md); color: var(--vtg-danger);
}
.vtg-error-top { display: flex; align-items: center; gap: 0.65rem; }
.vtg-error-top svg { flex-shrink: 0; }
.vtg-error-top span { flex: 1; font-weight: 500; }
.vtg-error-contact { font-size: 0.83rem; color: var(--vtg-text-2); padding-left: 1.6rem; margin: 0; }
.vtg-error-contact a { color: var(--vtg-primary); text-decoration: none; font-weight: 500; }
.vtg-error-contact a:hover { text-decoration: underline; }
.vtg-error-close {
    background: none; border: none; color: var(--vtg-danger); cursor: pointer;
    padding: 0.2rem; border-radius: var(--vtg-r-sm); display: flex;
    align-items: center; margin-left: auto;
}
.vtg-error-close:hover { background: rgba(230,78,78,0.15); }

/* ---- Editor ---- */
.vtg-editor-section { padding: 0; animation: vtgFadeIn 0.3s ease; }

/* ---- File Info Bar ---- */
.vtg-file-info-bar {
    display: flex; flex-wrap: wrap; gap: 1.25rem;
    padding: 0.875rem 1.5rem;
    background: var(--vtg-bg-secondary);
    border-bottom: 1px solid var(--vtg-border);
}
.vtg-file-info-item { display: flex; align-items: center; gap: 0.4rem; color: var(--vtg-text-2); font-size: 0.875rem; }
.vtg-file-info-item svg { color: var(--vtg-text-muted); }
.vtg-format-badge { background: var(--vtg-primary-light); color: var(--vtg-primary); padding: 0.2rem 0.65rem; border-radius: var(--vtg-r-full); font-weight: 600; }
.vtg-format-badge svg { color: var(--vtg-primary); }

/* ---- Toolbar (Presets + Format + Crop) ---- */
.vtg-toolbar {
    display: flex; flex-wrap: wrap; align-items: center;
    gap: 1rem; padding: 0.875rem 1.5rem;
    background: var(--vtg-bg); border-bottom: 1px solid var(--vtg-border);
}
.vtg-toolbar-group { display: flex; align-items: center; gap: 0.5rem; flex-wrap: wrap; }
.vtg-toolbar-label {
    display: flex; align-items: center; gap: 0.3rem;
    font-size: 0.78rem; font-weight: 600; color: var(--vtg-text-muted);
    white-space: nowrap; text-transform: uppercase; letter-spacing: 0.04em;
}
.vtg-toolbar-label svg { flex-shrink: 0; }

/* Preset pills */
.vtg-preset-pills { display: flex; gap: 0.35rem; flex-wrap: wrap; }
.vtg-preset-pill {
    display: inline-flex; align-items: center; gap: 0.3rem;
    padding: 0.3rem 0.7rem; font-size: 0.8rem; font-weight: 500;
    background: var(--vtg-bg-elevated); border: 1px solid var(--vtg-border);
    border-radius: var(--vtg-r-full); cursor: pointer; color: var(--vtg-text-2);
    transition: all 0.15s ease;
}
.vtg-preset-pill:hover,
.vtg-preset-pill.active {
    background: var(--vtg-primary-light); border-color: var(--vtg-primary);
    color: var(--vtg-primary);
}
.vtg-preset-pill svg { flex-shrink: 0; }

/* Format pills */
.vtg-format-pills { display: flex; gap: 0.35rem; }
.vtg-format-pill {
    display: inline-flex; align-items: center; gap: 0.3rem;
    padding: 0.3rem 0.8rem; font-size: 0.8rem; font-weight: 600;
    background: var(--vtg-bg-elevated); border: 1px solid var(--vtg-border);
    border-radius: var(--vtg-r-full); cursor: pointer; color: var(--vtg-text-2);
    transition: all 0.15s ease;
}
.vtg-format-pill.active,
.vtg-format-pill:hover {
    background: var(--vtg-primary-light); border-color: var(--vtg-primary);
    color: var(--vtg-primary);
}
.vtg-pill-badge {
    background: var(--vtg-success); color: white;
    font-size: 0.62rem; font-weight: 700; padding: 0.1rem 0.35rem;
    border-radius: var(--vtg-r-full); text-transform: uppercase; letter-spacing: 0.02em;
}

/* Crop toggle */
.vtg-crop-toggle {
    display: inline-flex; align-items: center; gap: 0.35rem;
    padding: 0.3rem 0.85rem; font-size: 0.8rem; font-weight: 500;
    background: var(--vtg-bg-elevated); border: 1px solid var(--vtg-border);
    border-radius: var(--vtg-r-full); cursor: pointer; color: var(--vtg-text-2);
    transition: all 0.15s ease;
}
.vtg-crop-toggle:hover,
.vtg-crop-toggle.active {
    background: rgba(230,160,32,0.12); border-color: var(--vtg-warning);
    color: var(--vtg-warning);
}
.vtg-crop-toggle svg { flex-shrink: 0; }

/* ---- Editor Layout ---- */
.vtg-editor-content {
    display: grid;
    grid-template-columns: 1fr 310px;
    min-height: 560px;
}

/* ---- Preview Panel ---- */
.vtg-preview-panel {
    padding: 1.5rem;
    background: var(--vtg-bg);
    border-right: 1px solid var(--vtg-border);
    overflow: visible;
}
.vtg-video-preview-container {
    background: #000; border-radius: var(--vtg-r-md);
    overflow: hidden; position: relative;
}
.vtg-video-preview-container video {
    width: 100%; display: block; max-height: 340px;
    object-fit: contain; background: #000;
}

/* Crop canvas overlay */
.vtg-crop-canvas {
    position: absolute; top: 0; left: 0; width: 100%;
    cursor: crosshair; z-index: 5;
}

/* Video controls */
.vtg-video-controls {
    display: flex; align-items: center; gap: 0.875rem;
    padding: 0.55rem 1rem; background: rgba(0,0,0,0.88);
}
.vtg-video-control-btn {
    width: 32px; height: 32px;
    display: flex; align-items: center; justify-content: center;
    border: none; background: rgba(255,255,255,0.1);
    border-radius: var(--vtg-r-full); cursor: pointer;
    color: white; transition: background 0.15s ease; flex-shrink: 0;
}
.vtg-video-control-btn:hover { background: var(--vtg-primary); }
.vtg-video-time {
    color: rgba(255,255,255,0.9); font-size: 0.82rem;
    font-family: monospace; flex: 1; text-align: center;
}

/* ---- Timeline ---- */
.vtg-timeline-container { padding: 0.75rem 1rem; background: rgba(0,0,0,0.75); }
.vtg-timeline-track {
    position: relative; height: 40px;
    background: rgba(255,255,255,0.08);
    border-radius: var(--vtg-r-sm); cursor: pointer; overflow: hidden;
}

/* Thumbnail strip (Feature 7) */
.vtg-thumbnail-strip {
    position: absolute; inset: 0; width: 100%; height: 100%;
    opacity: 0.65; pointer-events: none; object-fit: cover;
}

.vtg-timeline-progress {
    position: absolute; top: 0; left: 0; height: 100%;
    background: rgba(255,255,255,0.15); pointer-events: none;
}
.vtg-timeline-selection {
    position: absolute; top: 0; height: 100%;
    background: rgba(51,153,204,0.45); pointer-events: none;
}
.vtg-timeline-handle {
    position: absolute; top: -4px; width: 11px; height: 48px;
    background: var(--vtg-primary); border-radius: 4px;
    cursor: ew-resize; z-index: 10;
}
.vtg-timeline-handle:hover { background: var(--vtg-primary-dark); }
.vtg-timeline-handle.start { left: 0; border-radius: 4px 0 0 4px; }
.vtg-timeline-handle.end  { right: 0; border-radius: 0 4px 4px 0; }
.vtg-timeline-playhead {
    position: absolute; top: 0; width: 2px; height: 100%;
    background: white; pointer-events: none; z-index: 5;
}
.vtg-timeline-times {
    display: flex; justify-content: space-between; align-items: center;
    margin-top: 0.45rem; font-size: 0.77rem;
    color: rgba(255,255,255,0.6); font-family: monospace;
}
.vtg-timeline-duration { color: var(--vtg-primary); font-weight: 600; }

/* ---- Settings Panel ---- */
.vtg-settings-panel {
    padding: 1.5rem 1.5rem 1.25rem;
    background: var(--vtg-bg-elevated);
    overflow-y: auto; max-height: 660px;
}
.vtg-settings-title {
    display: flex; align-items: center; gap: 0.5rem;
    font-size: 0.95rem; font-weight: 600; color: var(--vtg-text);
    margin: 0 0 1.35rem; padding-bottom: 0.75rem;
    border-bottom: 2px solid var(--vtg-primary-light);
}
.vtg-settings-title svg { color: var(--vtg-primary); }

/* ---- Setting Group ---- */
.vtg-setting-group { margin-bottom: 1.4rem; }
.vtg-setting-header {
    display: flex; justify-content: space-between; align-items: center;
    margin-bottom: 0.55rem;
}
.vtg-setting-label {
    display: flex; align-items: center; gap: 0.4rem;
    font-size: 0.83rem; font-weight: 600; color: var(--vtg-text);
}
.vtg-setting-label svg { color: var(--vtg-primary); flex-shrink: 0; }
.vtg-setting-value {
    font-size: 0.83rem; font-weight: 700; color: var(--vtg-primary);
    min-width: 52px; text-align: right;
}
.vtg-setting-hint { font-size: 0.72rem; color: var(--vtg-text-muted); margin-top: 0.2rem; display: block; }

/* ---- Full-width Slider (from reference image) ---- */
.vtg-slider {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    height: 7px;
    border-radius: var(--vtg-r-full);
    /* filled track using gradient, updated via JS --vtg-fill custom property */
    background: linear-gradient(to right,
        var(--vtg-primary) 0%,
        var(--vtg-primary) var(--vtg-fill, 47%),
        var(--vtg-border) var(--vtg-fill, 47%),
        var(--vtg-border) 100%
    );
    outline: none;
    cursor: pointer;
    display: block;
}
.vtg-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 18px; height: 18px;
    border-radius: 50%;
    background: white;
    border: 2.5px solid var(--vtg-primary);
    cursor: pointer;
    box-shadow: 0 1px 4px rgba(0,0,0,0.18);
    transition: transform 0.15s ease, box-shadow 0.15s ease;
}
.vtg-slider::-webkit-slider-thumb:hover {
    transform: scale(1.2);
    box-shadow: 0 2px 8px rgba(51,153,204,0.4);
}
.vtg-slider::-moz-range-thumb {
    width: 18px; height: 18px;
    border-radius: 50%; background: white;
    border: 2.5px solid var(--vtg-primary);
    cursor: pointer; box-shadow: 0 1px 4px rgba(0,0,0,0.18);
}
.vtg-slider:focus { outline: none; }
.vtg-slider:focus::-webkit-slider-thumb { box-shadow: 0 0 0 3px var(--vtg-primary-light); }

/* Quality slider - always full red-green gradient track */
.vtg-slider-quality {
    background: linear-gradient(to right, #e64e4e 0%, #e6a020 40%, #339966 100%) !important;
}
.vtg-slider-quality::-webkit-slider-thumb {
    border-color: #888;
    box-shadow: 0 1px 4px rgba(0,0,0,0.25);
}

.vtg-slider-minmax {
    display: flex; justify-content: space-between;
    font-size: 0.7rem; color: var(--vtg-text-muted); margin-top: 0.3rem;
}

/* Quality presets */
.vtg-quality-presets {
    display: grid; grid-template-columns: repeat(3, 1fr);
    gap: 0.35rem; margin-top: 0.55rem;
}
.vtg-quality-preset {
    display: flex; align-items: center; justify-content: center;
    gap: 0.3rem; padding: 0.35rem 0.5rem; font-size: 0.78rem; font-weight: 500;
    background: var(--vtg-bg); border: 1px solid var(--vtg-border);
    border-radius: var(--vtg-r-md); cursor: pointer; color: var(--vtg-text-2);
    transition: all 0.15s ease;
}
.vtg-quality-preset:hover { border-color: var(--vtg-primary); color: var(--vtg-primary); }
.vtg-quality-preset.active {
    background: var(--vtg-primary-light); border-color: var(--vtg-primary);
    color: var(--vtg-primary); font-weight: 600;
}
.vtg-quality-preset svg { flex-shrink: 0; }

/* ---- Select ---- */
.vtg-setting-select {
    width: 100%; padding: 0.6rem 0.875rem;
    border: 1px solid var(--vtg-border);
    border-radius: var(--vtg-r-md);
    background: var(--vtg-bg); color: var(--vtg-text);
    font-size: 0.875rem; cursor: pointer;
    transition: border-color 0.15s ease;
}
.vtg-setting-select:hover { border-color: var(--vtg-primary); }
.vtg-setting-select:focus {
    outline: none; border-color: var(--vtg-primary);
    box-shadow: 0 0 0 3px var(--vtg-primary-light);
}

/* ---- Toggle ---- */
.vtg-toggle { position: relative; display: inline-block; width: 42px; height: 23px; flex-shrink: 0; }
.vtg-toggle-sm { width: 36px; height: 20px; }
.vtg-toggle input { opacity: 0; width: 0; height: 0; }
.vtg-toggle-slider {
    position: absolute; cursor: pointer; inset: 0;
    background: var(--vtg-bg-secondary);
    border-radius: var(--vtg-r-full);
    transition: all 0.25s ease;
}
.vtg-toggle-slider::before {
    content: ""; position: absolute;
    height: 17px; width: 17px; left: 3px; bottom: 3px;
    background: white; border-radius: 50%;
    transition: all 0.25s ease; box-shadow: var(--vtg-shadow-sm);
}
.vtg-toggle-sm .vtg-toggle-slider::before { height: 14px; width: 14px; left: 3px; bottom: 3px; }
.vtg-toggle input:checked + .vtg-toggle-slider { background: var(--vtg-primary); }
.vtg-toggle input:checked + .vtg-toggle-slider::before { transform: translateX(19px); }
.vtg-toggle-sm input:checked + .vtg-toggle-slider::before { transform: translateX(16px); }
.vtg-toggle-container { display: flex; align-items: center; gap: 0.6rem; }
.vtg-toggle-label { font-size: 0.83rem; color: var(--vtg-text-2); }

/* ---- Target Size controls ---- */
.vtg-target-row { display: flex; gap: 0.4rem; align-items: center; }
.vtg-number-input {
    width: 70px; padding: 0.55rem 0.6rem;
    border: 1px solid var(--vtg-border); border-radius: var(--vtg-r-md);
    background: var(--vtg-bg); color: var(--vtg-text); font-size: 0.875rem;
    text-align: center;
}
.vtg-number-input:focus { outline: none; border-color: var(--vtg-primary); box-shadow: 0 0 0 3px var(--vtg-primary-light); }
.vtg-unit-select { width: auto; min-width: 60px; }

/* ---- Estimate Box ---- */
.vtg-estimate-box {
    display: flex; align-items: center; gap: 0.875rem;
    padding: 0.875rem 1rem;
    background: var(--vtg-primary-light);
    border-radius: var(--vtg-r-md); margin-top: 0.5rem;
}
.vtg-estimate-icon {
    width: 40px; height: 40px; background: var(--vtg-primary);
    border-radius: var(--vtg-r-md);
    display: flex; align-items: center; justify-content: center;
    color: white; flex-shrink: 0;
}
.vtg-estimate-info { display: flex; flex-direction: column; }
.vtg-estimate-label { font-size: 0.7rem; color: var(--vtg-text-muted); text-transform: uppercase; letter-spacing: 0.05em; }
.vtg-estimate-value { font-size: 1.15rem; font-weight: 700; color: var(--vtg-primary); }

/* ---- GIF Preview Section ---- */
.vtg-gif-preview-section {
    padding: 1.5rem 1.75rem;
    border-top: 1px solid var(--vtg-border);
}
.vtg-gif-preview-header {
    display: flex; justify-content: space-between; align-items: center;
    margin-bottom: 1rem;
}
.vtg-gif-preview-header h3 {
    display: flex; align-items: center; gap: 0.5rem;
    font-size: 1rem; margin: 0; color: var(--vtg-text);
}
.vtg-gif-preview-header h3 svg { color: var(--vtg-success); }
.vtg-gif-preview-actions { display: flex; gap: 0.5rem; }
.vtg-gif-preview-container {
    background: var(--vtg-bg-secondary); border-radius: var(--vtg-r-md);
    padding: 1rem; text-align: center;
}
.vtg-gif-preview-container img {
    max-width: 100%; max-height: 360px; border-radius: var(--vtg-r-sm);
}
.vtg-gif-stats {
    display: flex; flex-wrap: wrap; gap: 1.25rem;
    margin-top: 0.875rem; justify-content: center;
}
.vtg-gif-stat { display: flex; align-items: center; gap: 0.4rem; font-size: 0.875rem; color: var(--vtg-text-2); }
.vtg-gif-stat svg { color: var(--vtg-primary); }
.vtg-gif-stat strong { color: var(--vtg-text); }

/* ---- Action Bar ---- */
.vtg-action-bar {
    display: flex; justify-content: space-between; align-items: center;
    padding: 1.1rem 1.5rem;
    background: var(--vtg-bg-elevated);
    border-top: 1px solid var(--vtg-border);
    gap: 1rem; flex-wrap: wrap;
}
.vtg-action-group { display: flex; gap: 0.6rem; flex-wrap: wrap; }

/* ---- Buttons ---- */
.vtg-btn {
    display: inline-flex; align-items: center; justify-content: center;
    gap: 0.4rem; padding: 0.65rem 1.35rem;
    font-size: 0.9rem; font-weight: 600; border: none;
    border-radius: var(--vtg-r-full); cursor: pointer;
    transition: all 0.18s ease; white-space: nowrap;
}
.vtg-btn-sm { padding: 0.4rem 0.85rem; font-size: 0.82rem; }
.vtg-btn-primary { background: var(--vtg-primary); color: white; }
.vtg-btn-primary:hover { background: var(--vtg-primary-dark); transform: translateY(-1px); box-shadow: var(--vtg-shadow-md); }
.vtg-btn-secondary { background: var(--vtg-bg); color: var(--vtg-text); border: 1px solid var(--vtg-border); }
.vtg-btn-secondary:hover { background: var(--vtg-bg-secondary); border-color: var(--vtg-text-muted); }
.vtg-btn-success { background: var(--vtg-success); color: white; }
.vtg-btn-success:hover { background: #2a7a52; transform: translateY(-1px); box-shadow: var(--vtg-shadow-md); }
.vtg-btn:disabled { opacity: 0.5; cursor: not-allowed; transform: none !important; }

/* ---- Related Tools ---- */
.vtg-related-tools {
    display: flex; align-items: center; gap: 1rem;
    margin-top: 2rem; padding: 1rem 1.35rem;
    background: var(--vtg-bg-elevated);
    border-radius: var(--vtg-r-lg); border: 1px solid var(--vtg-border);
    flex-wrap: wrap;
}
.vtg-related-label { display: flex; align-items: center; gap: 0.4rem; font-weight: 600; color: var(--vtg-text); white-space: nowrap; font-size: 0.875rem; }
.vtg-related-label svg { color: var(--vtg-primary); }
.vtg-related-links { display: flex; gap: 0.55rem; flex-wrap: wrap; flex: 1; }
.vtg-tool-link {
    display: inline-flex; align-items: center; gap: 0.35rem;
    padding: 0.4rem 0.875rem;
    background: var(--vtg-bg); border: 1px solid var(--vtg-border);
    border-radius: var(--vtg-r-full); color: var(--vtg-text-2);
    font-size: 0.82rem; font-weight: 500; text-decoration: none;
    transition: all 0.15s ease;
}
.vtg-tool-link:hover { background: var(--vtg-primary-light); border-color: var(--vtg-primary); color: var(--vtg-primary); text-decoration: none; }
.vtg-tool-link svg { width: 13px; height: 13px; }

/* ---- Info Sections ---- */
.vtg-info-sections { margin-top: 2rem; }
.vtg-info-card {
    background: var(--vtg-bg-elevated);
    border-radius: var(--vtg-r-lg); padding: 2rem;
    margin-bottom: 1.5rem; border: 1px solid var(--vtg-border);
}
.vtg-info-card h2 {
    display: flex; align-items: center; gap: 0.65rem;
    font-size: 1.3rem; margin: 0 0 1.35rem; color: var(--vtg-text);
}
.vtg-info-card h2 svg { color: var(--vtg-primary); flex-shrink: 0; }

/* Steps list */
.vtg-steps-list { list-style: none; padding: 0; margin: 0; counter-reset: vtg-step; }
.vtg-steps-list li {
    position: relative; padding-left: 3rem; padding-bottom: 1.1rem;
    counter-increment: vtg-step; color: var(--vtg-text-2); line-height: 1.7; font-size: 0.925rem;
}
.vtg-steps-list li:last-child { padding-bottom: 0; }
.vtg-steps-list li::before {
    content: counter(vtg-step); position: absolute; left: 0; top: 0;
    width: 1.9rem; height: 1.9rem; background: var(--vtg-primary); color: white;
    border-radius: 50%; display: flex; align-items: center; justify-content: center;
    font-weight: 700; font-size: 0.8rem;
}
.vtg-steps-list li strong { color: var(--vtg-text); }
.vtg-steps-list li a { color: var(--vtg-primary); text-decoration: none; font-weight: 500; }
.vtg-steps-list li a:hover { text-decoration: underline; }

/* Tip box */
.vtg-tip-box {
    display: flex; align-items: flex-start; gap: 0.75rem;
    margin-top: 1.35rem; padding: 0.875rem 1.1rem;
    background: rgba(230,160,32,0.1); border-radius: var(--vtg-r-md);
    font-size: 0.9rem; color: #92400e; line-height: 1.6;
}
[data-theme="dark"] .vtg-tip-box { background: rgba(251,191,36,0.1); color: #fbbf24; }
.vtg-tip-box svg { color: var(--vtg-warning); flex-shrink: 0; margin-top: 2px; }
.vtg-tip-box a { color: #d97706; font-weight: 600; text-decoration: none; }
[data-theme="dark"] .vtg-tip-box a { color: #fbbf24; }
.vtg-tip-box a:hover { text-decoration: underline; }

/* Features grid */
.vtg-features-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); gap: 1.1rem; }
.vtg-feature-item { display: flex; gap: 0.875rem; padding: 1.1rem; background: var(--vtg-bg); border-radius: var(--vtg-r-md); }
.vtg-feature-icon { width: 42px; height: 42px; border-radius: var(--vtg-r-md); display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.vtg-feature-icon.blue   { background: rgba(51,153,204,0.12); color: #3399cc; }
.vtg-feature-icon.green  { background: rgba(51,153,102,0.12); color: #339966; }
.vtg-feature-icon.orange { background: rgba(230,160,32,0.12); color: #e6a020; }
.vtg-feature-icon.red    { background: rgba(230,78,78,0.12);  color: #e64e4e; }
.vtg-feature-content h3 { margin: 0 0 0.3rem; font-size: 0.975rem; color: var(--vtg-text); }
.vtg-feature-content p  { margin: 0; color: var(--vtg-text-2); font-size: 0.875rem; line-height: 1.5; }

/* Format grid */
.vtg-format-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(175px, 1fr)); gap: 0.75rem; }
.vtg-format-card { display: flex; align-items: center; gap: 0.75rem; padding: 0.8rem 0.875rem; background: var(--vtg-bg); border-radius: var(--vtg-r-md); }
.vtg-format-icon { width: 36px; height: 36px; border-radius: var(--vtg-r-md); display: flex; align-items: center; justify-content: center; flex-shrink: 0; background: rgba(51,153,204,0.12); color: #3399cc; }
.vtg-format-info { flex: 1; }
.vtg-format-info h4 { margin: 0 0 0.2rem; font-size: 0.9rem; color: var(--vtg-text); }
.vtg-format-info span { font-size: 0.78rem; color: var(--vtg-text-muted); }
.vtg-support-badge { width: 20px; height: 20px; border-radius: 50%; display: flex; align-items: center; justify-content: center; background: rgba(51,153,102,0.15); color: #339966; }

/* ---- FAQ ---- */
.vtg-faq-list { display: flex; flex-direction: column; gap: 0.55rem; }
.vtg-faq-item { background: var(--vtg-bg); border-radius: var(--vtg-r-md); overflow: hidden; }
.vtg-faq-question {
    width: 100%; display: flex; justify-content: space-between; align-items: center;
    padding: 1rem 1.1rem; background: transparent; border: none; cursor: pointer;
    font-size: 0.925rem; font-weight: 500; color: var(--vtg-text); text-align: left;
    transition: background 0.15s ease; gap: 0.875rem;
}
.vtg-faq-question:hover { background: var(--vtg-bg-secondary); }
.vtg-faq-question svg { color: var(--vtg-text-muted); flex-shrink: 0; transition: transform 0.25s ease; }
.vtg-faq-item.open .vtg-faq-question svg { transform: rotate(180deg); }
.vtg-faq-answer { max-height: 0; overflow: hidden; transition: max-height 0.3s ease; }
.vtg-faq-item.open .vtg-faq-answer { max-height: 350px; }
.vtg-faq-answer p { padding: 0 1.1rem 1rem; margin: 0; color: var(--vtg-text-2); line-height: 1.7; font-size: 0.9rem; }
.vtg-faq-answer a { color: var(--vtg-primary); text-decoration: none; }
.vtg-faq-answer a:hover { text-decoration: underline; }

/* ---- Toast ---- */
.vtg-toast {
    position: fixed; bottom: 2rem; left: 50%;
    transform: translateX(-50%) translateY(100px);
    display: flex; align-items: center; gap: 0.65rem;
    padding: 0.8rem 1.35rem;
    background: var(--vtg-bg-elevated); border: 1px solid var(--vtg-border);
    border-radius: var(--vtg-r-lg); box-shadow: var(--vtg-shadow-lg);
    z-index: 10001; opacity: 0; transition: all 0.3s ease;
    font-size: 0.875rem; font-weight: 500; color: var(--vtg-text);
}
.vtg-toast.show { transform: translateX(-50%) translateY(0); opacity: 1; }
.vtg-toast.success svg { color: var(--vtg-success); }
.vtg-toast.error   svg { color: var(--vtg-danger); }

/* ---- Responsive ---- */
@media (max-width: 860px) {
    .vtg-editor-content { grid-template-columns: 1fr; }
    .vtg-preview-panel { border-right: none; border-bottom: 1px solid var(--vtg-border); }
    .vtg-settings-panel { max-height: none; }
    .vtg-features-grid { grid-template-columns: 1fr; }
    .vtg-action-bar { flex-direction: column; }
    .vtg-action-group { width: 100%; justify-content: center; }
}
@media (max-width: 768px) {
    .tool-container { padding: 1rem; }
    .vtg-upload-section { padding: 2rem 1.25rem; }
    .vtg-upload-area { padding: 2.5rem 1.25rem; }
    .vtg-btn { width: 100%; justify-content: center; }
    .vtg-related-tools { flex-direction: column; align-items: flex-start; }
    .vtg-related-links { width: 100%; }
    .vtg-tool-link { flex: 1; min-width: calc(50% - 0.28rem); justify-content: center; }
    .vtg-format-grid { grid-template-columns: repeat(2,1fr); }
    .vtg-toolbar { gap: 0.75rem; }
}
@media (max-width: 480px) {
    .tool-title { font-size: 1.65rem; }
    .tool-title-row { flex-direction: column; gap: 0.45rem; }
    .vtg-file-info-bar { flex-direction: column; gap: 0.5rem; }
    .vtg-timeline-times { flex-direction: column; gap: 0.2rem; align-items: center; }
    .vtg-format-grid { grid-template-columns: 1fr; }
    .vtg-gif-stats { flex-direction: column; align-items: flex-start; }
    .vtg-preset-pills { gap: 0.25rem; }
    .vtg-toast { left: 1rem; right: 1rem; transform: translateX(0) translateY(100px); }
    .vtg-toast.show { transform: translateX(0) translateY(0); }
}

/* ---- Animations ---- */
@keyframes vtgFadeIn {
    from { opacity: 0; transform: translateY(8px); }
    to   { opacity: 1; transform: translateY(0); }
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}

/* ---- Progress actions, retry, failed state ---- */
.vtg-progress-actions {
    display: flex; align-items: center; justify-content: center;
    gap: 0.5rem; flex-wrap: wrap;
}
.vtg-retry-btn {
    display: inline-flex; align-items: center; gap: 0.4rem;
    margin-top: 0.75rem; padding: 0.4rem 0.9rem;
    background: var(--vtg-primary); color: #fff;
    border: 1px solid var(--vtg-primary); border-radius: var(--vtg-r-full);
    font-size: 0.82rem; font-weight: 500; cursor: pointer;
    transition: background var(--vtg-ease);
}
.vtg-retry-btn:hover { background: var(--vtg-primary-dark); border-color: var(--vtg-primary-dark); }
.vtg-progress-container.is-failed .vtg-progress-bar { background: var(--vtg-danger); }
.vtg-progress-container.is-failed .vtg-progress-text { color: var(--vtg-danger); font-weight: 500; }

/* ---- Measured size estimate ---- */
/* The settings column is narrow, so the box wraps: icon + figures on one row,
   the Measure button on its own row underneath. */
.vtg-estimate-box { position: relative; flex-wrap: wrap; row-gap: 0.6rem; }
.vtg-estimate-info { flex: 1 1 0; min-width: 0; }
.vtg-estimate-label { white-space: nowrap; font-size: 0.65rem; letter-spacing: 0.04em; }
.vtg-estimate-value { white-space: nowrap; font-size: 1.05rem; }
.vtg-estimate-meta {
    font-size: 0.72rem; color: var(--vtg-text-2); margin-top: 0.15rem; line-height: 1.35;
}
.vtg-measure-btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 0.35rem;
    flex: 1 0 100%; margin-left: 0;
    padding: 0.35rem 0.7rem;
    background: var(--vtg-bg-elevated); color: var(--vtg-primary);
    border: 1px solid var(--vtg-primary); border-radius: var(--vtg-r-full);
    font-size: 0.78rem; font-weight: 500; cursor: pointer;
    transition: background var(--vtg-ease), color var(--vtg-ease);
}
.vtg-measure-btn:hover { background: var(--vtg-primary); color: #fff; }

/* ---- Frame budget warning ---- */
.vtg-frame-warning {
    display: flex; align-items: flex-start; gap: 0.55rem;
    margin-top: 0.6rem; padding: 0.7rem 0.85rem;
    background: rgba(230,160,32,0.1);
    border: 1px solid var(--vtg-warning);
    border-radius: var(--vtg-r-md);
    color: var(--vtg-text); font-size: 0.8rem; line-height: 1.45;
}
.vtg-frame-warning svg { color: var(--vtg-warning); flex-shrink: 0; margin-top: 0.1rem; }
[data-theme="dark"] .vtg-frame-warning { background: rgba(251,191,36,0.1); }