/* ============================================
   DDS File Viewer - dds-viewer.css
   Prefix: ddv-
   Light mode default, dark mode via [data-theme="dark"]
   Blue theme - image/file-viewer category
   ============================================ */

/* CSS Variables - Light Mode (Default) */
:root {
    --ddv-transition: 0.25s;

    /* Primary - blue (image / file-viewer tools) */
    --ddv-primary: #3399cc;
    --ddv-primary-light: #e0f2fe;
    --ddv-primary-dark: #2980b9;

    /* Status */
    --ddv-success: #339966;
    --ddv-success-light: #d1fae5;
    --ddv-warning: #f59e0b;
    --ddv-warning-light: #fef3c7;
    --ddv-danger: #e64e4e;
    --ddv-danger-light: #fee2e2;

    /* Surfaces */
    --ddv-bg: #f0f9ff;
    --ddv-bg-elevated: #ffffff;
    --ddv-bg-secondary: #e0f2fe;
    --ddv-bg-tertiary: #bae6fd;
    --ddv-bg-canvas: #f8fafc;

    /* Text */
    --ddv-text: #0c4a6e;
    --ddv-text-secondary: #075985;
    --ddv-text-muted: #64748b;

    /* Borders */
    --ddv-border: #bae6fd;
    --ddv-border-light: #e0f2fe;

    /* Shadows */
    --ddv-shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
    --ddv-shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.08);

    /* Radius */
    --ddv-radius-sm: 6px;
    --ddv-radius-md: 10px;
    --ddv-radius-lg: 14px;
    --ddv-radius-xl: 18px;
}

/* Dark Mode */
[data-theme="dark"] {
    --ddv-primary: #60a5fa;
    --ddv-primary-light: rgba(96, 165, 250, 0.15);
    --ddv-primary-dark: #3b82f6;

    --ddv-success: #34d399;
    --ddv-success-light: rgba(52, 211, 153, 0.15);
    --ddv-warning: #fbbf24;
    --ddv-warning-light: rgba(251, 191, 36, 0.15);
    --ddv-danger: #f87171;
    --ddv-danger-light: rgba(248, 113, 113, 0.15);

    --ddv-bg: #0c1929;
    --ddv-bg-elevated: #152238;
    --ddv-bg-secondary: #1e3a5f;
    --ddv-bg-tertiary: #264a6e;
    --ddv-bg-canvas: #0f1c2e;

    --ddv-text: #e0f2fe;
    --ddv-text-secondary: #bae6fd;
    --ddv-text-muted: #94a3b8;

    --ddv-border: #264a6e;
    --ddv-border-light: #1e3a5f;

    --ddv-shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
    --ddv-shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4);
}

/* ============================================
   GLOBAL OVERRIDES - fix custom_styles.css conflicts
   ============================================ */

/* Allow tooltips / dropdowns / fullscreen overlay to escape */
.tool-main { overflow: visible !important; }

/* Container & header */
.tool-container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 2rem 1rem;
}

.tool-header {
    text-align: center;
    margin-bottom: 1.75rem;
}

.tool-title {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    margin: 0 0 0.75rem;
    font-size: 1.85rem;
    font-weight: 700;
    color: var(--ddv-primary);
}

.tool-title i { color: var(--ddv-primary); }

.tool-description {
    max-width: 800px;
    margin: 0 auto;
    color: var(--ddv-text-muted);
    font-size: 0.95rem;
    line-height: 1.7;
}

.tool-description a {
    color: var(--ddv-primary);
    text-decoration: none;
    font-weight: 500;
}

.tool-description a:hover { text-decoration: underline; }

/* ============================================
   TOOL MAIN SHELL
   ============================================ */
.ddv-tool-main {
    background: var(--ddv-bg-elevated);
    border: 1px solid var(--ddv-border);
    border-radius: var(--ddv-radius-xl);
    box-shadow: var(--ddv-shadow-md);
    overflow: visible;
}

/* ============================================
   UPLOAD AREA
   ============================================ */
.ddv-upload-section {
    padding: 2rem;
}

.ddv-upload-area {
    border: 2px dashed var(--ddv-border);
    border-radius: var(--ddv-radius-lg);
    padding: 3rem 2rem;
    text-align: center;
    background: var(--ddv-bg);
    cursor: pointer;
    transition: border-color var(--ddv-transition), background-color var(--ddv-transition);
}

.ddv-upload-area:hover,
.ddv-upload-area.dragover {
    border-color: var(--ddv-primary);
    background: var(--ddv-primary-light);
}

.ddv-upload-content { display: flex; flex-direction: column; align-items: center; gap: 0.5rem; }

.ddv-upload-icon {
    width: 96px;
    height: 96px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--ddv-primary);
    margin-bottom: 0.5rem;
}

.ddv-upload-title {
    margin: 0;
    font-size: 1.35rem;
    font-weight: 600;
    color: var(--ddv-text);
}

.ddv-upload-subtitle {
    margin: 0 0 1rem;
    color: var(--ddv-text-muted);
    font-size: 0.95rem;
}

.ddv-file-types {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.ddv-file-type-badge {
    padding: 0.3rem 0.7rem;
    background: var(--ddv-bg-elevated);
    color: var(--ddv-primary);
    border: 1px solid var(--ddv-border);
    border-radius: var(--ddv-radius-sm);
    font-size: 0.78rem;
    font-weight: 600;
    letter-spacing: 0.02em;
}

.ddv-upload-hint {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    color: var(--ddv-text-muted);
    font-size: 0.82rem;
}

.ddv-upload-hint i { color: var(--ddv-success); }

/* ============================================
   STAGE-BASED PROCESSING OVERLAY
   ============================================ */
.ddv-processing-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    z-index: 9000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
}

.ddv-processing-card {
    background: var(--ddv-bg-elevated);
    border: 1px solid var(--ddv-border);
    border-radius: var(--ddv-radius-lg);
    padding: 1.5rem 1.75rem;
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.25);
    min-width: 340px;
    max-width: 440px;
    width: 100%;
}

.ddv-stage-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1.25rem;
    gap: 4px;
}

.ddv-stage {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.4rem;
    flex-shrink: 0;
}

.ddv-stage-dot {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--ddv-bg-secondary);
    border: 1px solid var(--ddv-border);
    color: var(--ddv-text-muted);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background var(--ddv-transition), color var(--ddv-transition), border-color var(--ddv-transition);
    padding: 6px;
}

.ddv-stage.active .ddv-stage-dot {
    background: var(--ddv-primary);
    border-color: var(--ddv-primary);
    color: #ffffff;
}

.ddv-stage.done .ddv-stage-dot {
    background: var(--ddv-success);
    border-color: var(--ddv-success);
    color: #ffffff;
}

.ddv-stage-label {
    font-size: 0.72rem;
    color: var(--ddv-text-muted);
    font-weight: 500;
}

.ddv-stage.active .ddv-stage-label { color: var(--ddv-primary); font-weight: 600; }
.ddv-stage.done .ddv-stage-label { color: var(--ddv-success); }

.ddv-stage-connector {
    flex: 1;
    height: 2px;
    background: var(--ddv-border);
    max-width: 28px;
    transition: background var(--ddv-transition);
}

.ddv-stage-connector.done { background: var(--ddv-success); }

.ddv-progress-bar-wrapper {
    width: 100%;
    height: 8px;
    background: var(--ddv-bg-secondary);
    border-radius: var(--ddv-radius-sm);
    overflow: hidden;
    margin-bottom: 0.6rem;
}

.ddv-progress-bar {
    height: 100%;
    width: 0%;
    background: var(--ddv-primary);
    border-radius: var(--ddv-radius-sm);
    transition: width 0.3s ease;
}

.ddv-progress-meta {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    gap: 0.75rem;
}

.ddv-progress-percent {
    font-weight: 700;
    color: var(--ddv-primary);
    font-size: 0.95rem;
}

.ddv-progress-text {
    color: var(--ddv-text-muted);
    font-size: 0.85rem;
    text-align: right;
    flex: 1;
    min-width: 0;
}

/* ============================================
   ERROR CONTAINER
   ============================================ */
.ddv-error-container {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem 1.25rem;
    margin: 1rem;
    background: var(--ddv-danger-light);
    color: var(--ddv-danger);
    border: 1px solid var(--ddv-danger);
    border-radius: var(--ddv-radius-md);
    font-size: 0.92rem;
}

.ddv-error-container a {
    color: var(--ddv-danger);
    text-decoration: underline;
    font-weight: 600;
}

.ddv-error-close {
    margin-left: auto;
    background: transparent;
    border: none;
    color: var(--ddv-danger);
    cursor: pointer;
    padding: 0.3rem;
    border-radius: var(--ddv-radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
}

.ddv-error-close:hover { background: rgba(230, 78, 78, 0.15); }

/* ============================================
   EDITOR SECTION
   ============================================ */
.ddv-editor-section {
    display: flex;
    flex-direction: column;
    border-top: 1px solid var(--ddv-border-light);
}

/* File Info Bar */
.ddv-file-info-bar {
    display: flex;
    align-items: center;
    gap: 1.25rem;
    padding: 0.9rem 1.25rem;
    background: var(--ddv-bg);
    border-bottom: 1px solid var(--ddv-border-light);
    flex-wrap: wrap;
}

.ddv-file-info-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.88rem;
    color: var(--ddv-text-secondary);
    min-width: 0;
}

.ddv-file-info-item i { color: var(--ddv-primary); flex-shrink: 0; }

.ddv-file-info-item span {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.ddv-format-badge {
    margin-left: auto;
    padding: 0.3rem 0.7rem;
    background: var(--ddv-primary-light);
    color: var(--ddv-primary);
    border-radius: var(--ddv-radius-sm);
    font-weight: 600;
}

[data-theme="dark"] .ddv-format-badge {
    background: var(--ddv-primary-light);
    color: var(--ddv-primary);
}

/* Toolbar */
.ddv-viewer-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.7rem 1rem;
    background: var(--ddv-bg-elevated);
    border-bottom: 1px solid var(--ddv-border-light);
    gap: 1rem;
    flex-wrap: wrap;
}

.ddv-toolbar-left,
.ddv-toolbar-right {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.ddv-view-toggle {
    display: inline-flex;
    background: var(--ddv-bg-secondary);
    border-radius: var(--ddv-radius-md);
    padding: 3px;
    gap: 2px;
}

.ddv-toggle-btn {
    display: inline-flex !important;
    align-items: center;
    gap: 0.35rem;
    padding: 0.45rem 0.85rem !important;
    background: transparent !important;
    color: var(--ddv-text-muted) !important;
    border: none !important;
    border-radius: var(--ddv-radius-sm) !important;
    cursor: pointer;
    font-size: 0.85rem !important;
    font-weight: 500 !important;
    transition: all var(--ddv-transition);
    box-shadow: none !important;
}

.ddv-toggle-btn:hover {
    color: var(--ddv-text) !important;
    background: var(--ddv-bg-elevated) !important;
}

.ddv-toggle-btn.active {
    background: var(--ddv-primary) !important;
    color: #ffffff !important;
    box-shadow: var(--ddv-shadow-sm) !important;
}

.ddv-toolbar-btn {
    width: 36px !important;
    height: 36px !important;
    padding: 0 !important;
    display: inline-flex !important;
    align-items: center;
    justify-content: center;
    background: var(--ddv-bg-secondary) !important;
    color: var(--ddv-text-secondary) !important;
    border: 1px solid var(--ddv-border) !important;
    border-radius: var(--ddv-radius-sm) !important;
    cursor: pointer;
    transition: all var(--ddv-transition);
    box-shadow: none !important;
}

.ddv-toolbar-btn:hover {
    background: var(--ddv-primary) !important;
    color: #ffffff !important;
    border-color: var(--ddv-primary) !important;
}

/* Mipmap selector */
.ddv-mipmap-selector {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.3rem 0.6rem;
    background: var(--ddv-bg-secondary);
    border-radius: var(--ddv-radius-sm);
    border: 1px solid var(--ddv-border);
    font-size: 0.85rem;
    color: var(--ddv-text-secondary);
}

.ddv-mipmap-selector label {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    font-weight: 500;
    margin: 0;
    color: var(--ddv-text-secondary);
}

.ddv-mipmap-selector i { color: var(--ddv-primary); }

.ddv-select {
    background: var(--ddv-bg-elevated);
    color: var(--ddv-text);
    border: 1px solid var(--ddv-border);
    border-radius: var(--ddv-radius-sm);
    padding: 0.25rem 0.5rem;
    font-size: 0.85rem;
    cursor: pointer;
    min-width: 0;
}

.ddv-select:focus { outline: 2px solid var(--ddv-primary); outline-offset: 1px; }

/* Viewer content area */
.ddv-viewer-content {
    min-height: 400px;
    background: var(--ddv-bg-canvas);
    overflow: auto;
}

.ddv-preview-panel { display: none; padding: 1.25rem; }
.ddv-preview-panel.active { display: block; }

/* Texture Preview */
.ddv-texture-preview-container {
    position: relative;
    background: var(--ddv-bg-elevated);
    border: 1px solid var(--ddv-border-light);
    border-radius: var(--ddv-radius-md);
    padding: 1rem;
    min-height: 360px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: auto;
}

/* Checkerboard for transparency - the only intentional pattern */
.ddv-texture-preview-container.show-transparency {
    background-color: var(--ddv-bg-elevated);
    background-image:
        linear-gradient(45deg, #cbd5e1 25%, transparent 25%),
        linear-gradient(-45deg, #cbd5e1 25%, transparent 25%),
        linear-gradient(45deg, transparent 75%, #cbd5e1 75%),
        linear-gradient(-45deg, transparent 75%, #cbd5e1 75%);
    background-size: 16px 16px;
    background-position: 0 0, 0 8px, 8px -8px, -8px 0px;
}

[data-theme="dark"] .ddv-texture-preview-container.show-transparency {
    background-image:
        linear-gradient(45deg, #334155 25%, transparent 25%),
        linear-gradient(-45deg, #334155 25%, transparent 25%),
        linear-gradient(45deg, transparent 75%, #334155 75%),
        linear-gradient(-45deg, transparent 75%, #334155 75%);
}

.ddv-texture-preview-container canvas {
    max-width: 100%;
    image-rendering: pixelated;
    image-rendering: -moz-crisp-edges;
    image-rendering: crisp-edges;
    transition: transform var(--ddv-transition);
    transform-origin: center;
}

.ddv-preview-loading {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    background: rgba(255, 255, 255, 0.85);
    color: var(--ddv-text-muted);
    font-size: 0.9rem;
    border-radius: var(--ddv-radius-md);
}

[data-theme="dark"] .ddv-preview-loading { background: rgba(15, 28, 46, 0.85); }

.ddv-spinner { animation: ddv-spin 1.2s linear infinite; color: var(--ddv-primary); }
@keyframes ddv-spin { to { transform: rotate(360deg); } }

/* Info Panel */
.ddv-info-body {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.ddv-info-block {
    background: var(--ddv-bg-elevated);
    border: 1px solid var(--ddv-border-light);
    border-radius: var(--ddv-radius-md);
    padding: 1rem 1.15rem;
}

.ddv-info-block-title {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 600;
    color: var(--ddv-text);
    margin-bottom: 0.85rem;
    font-size: 0.95rem;
}

.ddv-info-block-title i { color: var(--ddv-primary); }

.ddv-info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 0.5rem 1.25rem;
}

.ddv-info-item {
    display: flex;
    justify-content: space-between;
    gap: 0.75rem;
    padding: 0.4rem 0;
    border-bottom: 1px solid var(--ddv-border-light);
    min-width: 0;
}

.ddv-info-item:last-child { border-bottom: none; }

.ddv-info-label {
    color: var(--ddv-text-muted);
    font-size: 0.85rem;
    flex-shrink: 0;
}

.ddv-info-value {
    color: var(--ddv-text);
    font-weight: 500;
    font-size: 0.85rem;
    text-align: right;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    min-width: 0;
}

/* Hex Panel */
.ddv-hex-content { display: flex; flex-direction: column; gap: 0.75rem; }

.ddv-hex-controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.ddv-hex-nav {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    background: var(--ddv-bg-elevated);
    border: 1px solid var(--ddv-border);
    border-radius: var(--ddv-radius-sm);
    padding: 0.25rem 0.5rem;
}

.ddv-hex-nav-btn {
    width: 28px !important;
    height: 28px !important;
    padding: 0 !important;
    display: inline-flex !important;
    align-items: center;
    justify-content: center;
    background: transparent !important;
    color: var(--ddv-text-secondary) !important;
    border: none !important;
    border-radius: var(--ddv-radius-sm) !important;
    cursor: pointer;
    box-shadow: none !important;
}

.ddv-hex-nav-btn:hover:not(:disabled) {
    background: var(--ddv-bg-secondary) !important;
    color: var(--ddv-primary) !important;
}

.ddv-hex-nav-btn:disabled { opacity: 0.4; cursor: not-allowed; }

.ddv-hex-offset {
    font-family: 'SFMono-Regular', Consolas, 'Liberation Mono', monospace;
    font-size: 0.78rem;
    color: var(--ddv-text-muted);
    padding: 0 0.5rem;
    white-space: nowrap;
}

.ddv-hex-search { display: inline-flex; gap: 0.4rem; align-items: center; }

.ddv-hex-search-input {
    background: var(--ddv-bg-elevated);
    color: var(--ddv-text);
    border: 1px solid var(--ddv-border);
    border-radius: var(--ddv-radius-sm);
    padding: 0.4rem 0.7rem;
    font-size: 0.82rem;
    width: 220px;
    max-width: 100%;
}

.ddv-hex-search-input:focus {
    outline: 2px solid var(--ddv-primary);
    outline-offset: 1px;
    border-color: var(--ddv-primary);
}

.ddv-hex-search-btn {
    width: 32px !important;
    height: 32px !important;
    padding: 0 !important;
    display: inline-flex !important;
    align-items: center;
    justify-content: center;
    background: var(--ddv-primary) !important;
    color: #ffffff !important;
    border: 1px solid var(--ddv-primary) !important;
    border-radius: var(--ddv-radius-sm) !important;
    cursor: pointer;
    box-shadow: none !important;
}

.ddv-hex-search-btn:hover { background: var(--ddv-primary-dark) !important; border-color: var(--ddv-primary-dark) !important; }

.ddv-hex-viewer {
    background: var(--ddv-bg-elevated);
    border: 1px solid var(--ddv-border-light);
    border-radius: var(--ddv-radius-md);
    padding: 0.75rem;
    overflow-x: auto;
    max-height: 480px;
    overflow-y: auto;
}

.ddv-hex-viewer pre {
    margin: 0;
    font-family: 'SFMono-Regular', Consolas, 'Liberation Mono', monospace;
    font-size: 0.78rem;
    line-height: 1.55;
    color: var(--ddv-text);
}

.ddv-hex-line { display: flex; gap: 1rem; white-space: pre; }
.ddv-hex-line-offset { color: var(--ddv-primary); font-weight: 600; }
.ddv-hex-line-bytes { color: var(--ddv-text); }
.ddv-hex-line-ascii { color: var(--ddv-text-muted); }

/* Structure Panel */
.ddv-structure-content { display: flex; flex-direction: column; gap: 0.75rem; }

.ddv-structure-item {
    background: var(--ddv-bg-elevated);
    border: 1px solid var(--ddv-border-light);
    border-radius: var(--ddv-radius-md);
    overflow: hidden;
}

.ddv-structure-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.85rem 1rem;
    cursor: pointer;
    transition: background var(--ddv-transition);
    min-width: 0;
}

.ddv-structure-header:hover { background: var(--ddv-bg-secondary); }

.ddv-structure-icon {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--ddv-primary-light);
    color: var(--ddv-primary);
    border-radius: var(--ddv-radius-sm);
    flex-shrink: 0;
}

.ddv-structure-info { flex: 1; min-width: 0; }

.ddv-structure-name {
    font-weight: 600;
    color: var(--ddv-text);
    font-size: 0.92rem;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.ddv-structure-details {
    font-size: 0.78rem;
    color: var(--ddv-text-muted);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.ddv-structure-size {
    font-family: 'SFMono-Regular', Consolas, monospace;
    font-size: 0.78rem;
    color: var(--ddv-text-muted);
    background: var(--ddv-bg-secondary);
    padding: 0.25rem 0.55rem;
    border-radius: var(--ddv-radius-sm);
    flex-shrink: 0;
}

.ddv-structure-toggle {
    color: var(--ddv-text-muted);
    transition: transform var(--ddv-transition);
    flex-shrink: 0;
}

.ddv-structure-item.open .ddv-structure-toggle { transform: rotate(180deg); color: var(--ddv-primary); }

.ddv-structure-body {
    max-height: 0;
    overflow: hidden;
    padding: 0 1rem;
    transition: max-height var(--ddv-transition), padding var(--ddv-transition);
    background: var(--ddv-bg);
}

.ddv-structure-item.open .ddv-structure-body {
    max-height: 480px;
    padding: 0.85rem 1rem 1rem;
    border-top: 1px solid var(--ddv-border-light);
}

.ddv-structure-body p {
    margin: 0.25rem 0;
    font-size: 0.85rem;
    color: var(--ddv-text-secondary);
    font-family: 'SFMono-Regular', Consolas, monospace;
}

.ddv-structure-body p strong { color: var(--ddv-primary); font-weight: 600; }

.ddv-empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    padding: 3rem 1rem;
    color: var(--ddv-text-muted);
}

/* ============================================
   STATS BAR - single-color icons, no gradient backgrounds
   ============================================ */
.ddv-stats-bar {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 0.5rem;
    padding: 0.85rem 1rem;
    background: var(--ddv-bg);
    border-top: 1px solid var(--ddv-border-light);
    border-bottom: 1px solid var(--ddv-border-light);
}

.ddv-stat-item {
    display: flex;
    align-items: center;
    gap: 0.65rem;
    padding: 0.55rem 0.75rem;
    background: var(--ddv-bg-elevated);
    border: 1px solid var(--ddv-border-light);
    border-radius: var(--ddv-radius-sm);
    min-width: 0;
}

.ddv-stat-icon {
    width: 34px;
    height: 34px;
    border-radius: var(--ddv-radius-sm);
    background: var(--ddv-primary-light);
    color: var(--ddv-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.ddv-stat-info { display: flex; flex-direction: column; min-width: 0; flex: 1; }

.ddv-stat-label {
    font-size: 0.72rem;
    color: var(--ddv-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.ddv-stat-value {
    font-size: 0.92rem;
    font-weight: 600;
    color: var(--ddv-text);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* ============================================
   ACTION BAR & BUTTONS
   ============================================ */
.ddv-action-bar {
    display: flex;
    justify-content: space-between;
    gap: 0.75rem;
    padding: 1rem 1.25rem;
    background: var(--ddv-bg-elevated);
    flex-wrap: wrap;
}

.ddv-action-group { display: flex; gap: 0.5rem; flex-wrap: wrap; }

.ddv-btn {
    display: inline-flex !important;
    align-items: center;
    gap: 0.5rem;
    padding: 0.6rem 1.15rem !important;
    border-radius: var(--ddv-radius-md) !important;
    font-size: 0.9rem !important;
    font-weight: 600 !important;
    cursor: pointer;
    transition: all var(--ddv-transition);
    border: 1px solid transparent !important;
    line-height: 1;
    box-shadow: none !important;
}

.ddv-btn-primary {
    background: var(--ddv-primary) !important;
    color: #ffffff !important;
    border-color: var(--ddv-primary) !important;
}

.ddv-btn-primary:hover {
    background: var(--ddv-primary-dark) !important;
    border-color: var(--ddv-primary-dark) !important;
}

.ddv-btn-success {
    background: var(--ddv-success) !important;
    color: #ffffff !important;
    border-color: var(--ddv-success) !important;
}

.ddv-btn-success:hover { filter: brightness(0.92); }

.ddv-btn-secondary {
    background: var(--ddv-bg-secondary) !important;
    color: var(--ddv-text-secondary) !important;
    border-color: var(--ddv-border) !important;
}

.ddv-btn-secondary:hover {
    background: var(--ddv-bg-tertiary) !important;
    color: var(--ddv-text) !important;
}

/* ============================================
   FULLSCREEN OVERLAY
   ============================================ */
.ddv-fullpage-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.95);
    z-index: 9500;
    display: flex;
    flex-direction: column;
}

.ddv-fullpage-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 1.5rem;
    background: rgba(0, 0, 0, 0.5);
    color: #ffffff;
    flex-wrap: wrap;
    gap: 1rem;
}

.ddv-fullpage-title {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 600;
    min-width: 0;
}

.ddv-fullpage-title span {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.ddv-fullpage-controls { display: flex; gap: 0.75rem; align-items: center; }

.ddv-fullpage-zoom-controls {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--ddv-radius-sm);
    padding: 0.25rem;
}

.ddv-zoom-btn {
    width: 32px !important;
    height: 32px !important;
    padding: 0 !important;
    background: transparent !important;
    color: #ffffff !important;
    border: none !important;
    border-radius: var(--ddv-radius-sm) !important;
    cursor: pointer;
    display: inline-flex !important;
    align-items: center;
    justify-content: center;
    box-shadow: none !important;
}

.ddv-zoom-btn:hover { background: rgba(255, 255, 255, 0.15) !important; }

.ddv-zoom-level {
    color: #ffffff;
    font-size: 0.85rem;
    font-weight: 600;
    min-width: 50px;
    text-align: center;
}

.ddv-close-fullpage {
    display: inline-flex !important;
    align-items: center;
    gap: 0.4rem;
    padding: 0.5rem 0.9rem !important;
    background: rgba(255, 255, 255, 0.1) !important;
    color: #ffffff !important;
    border: 1px solid rgba(255, 255, 255, 0.2) !important;
    border-radius: var(--ddv-radius-sm) !important;
    cursor: pointer;
    font-size: 0.85rem !important;
    box-shadow: none !important;
}

.ddv-close-fullpage:hover { background: rgba(255, 255, 255, 0.2) !important; }

.ddv-fullpage-content {
    flex: 1;
    overflow: auto;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
}

.ddv-fullpage-content canvas {
    image-rendering: pixelated;
    image-rendering: -moz-crisp-edges;
    image-rendering: crisp-edges;
}

/* ============================================
   TOAST NOTIFICATIONS
   ============================================ */
.ddv-toast {
    position: fixed;
    bottom: 24px;
    right: 24px;
    display: flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0.75rem 1.15rem;
    border-radius: var(--ddv-radius-md);
    background: var(--ddv-bg-elevated);
    color: var(--ddv-text);
    border: 1px solid var(--ddv-border);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.18);
    font-size: 0.88rem;
    transform: translateY(20px);
    opacity: 0;
    transition: transform 0.25s, opacity 0.25s;
    z-index: 10000;
    max-width: calc(100vw - 48px);
}

.ddv-toast.show { transform: translateY(0); opacity: 1; }

.ddv-toast.success { border-left: 1px solid var(--ddv-success); color: var(--ddv-success); }
.ddv-toast.success i { color: var(--ddv-success); }
.ddv-toast.error { border-left: 1px solid var(--ddv-danger); color: var(--ddv-danger); }
.ddv-toast.error i { color: var(--ddv-danger); }

/* ============================================
   RELATED TOOLS - pill links in a box
   ============================================ */
.ddv-related-tools { margin: 1.75rem 0; }

.ddv-related-tools-box {
    background: var(--ddv-bg-elevated);
    border: 1px solid var(--ddv-border);
    border-radius: var(--ddv-radius-md);
    padding: 1rem 1.15rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.ddv-related-label {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    color: var(--ddv-text-muted);
    font-size: 0.88rem;
    font-weight: 600;
}

.ddv-related-label i { color: var(--ddv-primary); }

.ddv-related-links { display: inline-flex; gap: 0.5rem; flex-wrap: wrap; }

.ddv-related-link {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.4rem 0.85rem;
    background: var(--ddv-bg);
    color: var(--ddv-primary);
    border: 1px solid var(--ddv-border);
    border-radius: 999px;
    text-decoration: none;
    font-size: 0.85rem;
    font-weight: 500;
    transition: all var(--ddv-transition);
}

.ddv-related-link:hover {
    background: var(--ddv-primary);
    color: #ffffff;
    border-color: var(--ddv-primary);
}

.ddv-related-link i { flex-shrink: 0; }

/* ============================================
   INFO SECTIONS (white cards, border, no shadow on wrapper)
   ============================================ */
.ddv-info-sections {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
    margin: 1.5rem 0;
}

.ddv-info-card {
    background: var(--ddv-bg-elevated);
    border: 1px solid var(--ddv-border);
    border-radius: var(--ddv-radius-md);
    padding: 1.5rem 1.75rem;
}

.ddv-info-card h2 {
    display: flex;
    align-items: center;
    gap: 0.55rem;
    margin: 0 0 1rem;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--ddv-text);
}

.ddv-info-card h2 i { color: var(--ddv-primary); }

.ddv-info-card p {
    margin: 0.6rem 0;
    color: var(--ddv-text-secondary);
    line-height: 1.7;
    font-size: 0.95rem;
}

.ddv-info-card a {
    color: var(--ddv-primary);
    text-decoration: none;
    font-weight: 500;
}

.ddv-info-card a:hover { text-decoration: underline; }

.ddv-info-card ol,
.ddv-info-card ul {
    color: var(--ddv-text-secondary);
    line-height: 1.7;
    font-size: 0.95rem;
    padding-left: 1.25rem;
}

.ddv-info-card li { margin: 0.4rem 0; }

.ddv-steps-list strong { color: var(--ddv-text); }

/* Features grid */
.ddv-features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1rem;
    margin: 0.5rem 0;
}

.ddv-feature-item {
    padding: 1rem;
    background: var(--ddv-bg);
    border: 1px solid var(--ddv-border-light);
    border-radius: var(--ddv-radius-sm);
    min-width: 0;
}

.ddv-feature-item i { color: var(--ddv-primary); margin-bottom: 0.5rem; }

.ddv-feature-item h4 {
    margin: 0.5rem 0 0.35rem;
    font-size: 0.95rem;
    color: var(--ddv-text);
    font-weight: 600;
}

.ddv-feature-item p {
    margin: 0;
    font-size: 0.85rem;
    color: var(--ddv-text-muted);
    line-height: 1.55;
}

/* Format features (About DDS) */
.ddv-format-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 0.6rem;
    margin-top: 1rem;
}

.ddv-format-feature {
    display: flex;
    align-items: center;
    gap: 0.65rem;
    padding: 0.6rem 0.85rem;
    background: var(--ddv-bg);
    border: 1px solid var(--ddv-border-light);
    border-radius: var(--ddv-radius-sm);
    min-width: 0;
}

.ddv-feature-badge {
    width: 32px;
    height: 32px;
    background: var(--ddv-primary-light);
    color: var(--ddv-primary);
    border-radius: var(--ddv-radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.ddv-format-feature span {
    font-size: 0.88rem;
    color: var(--ddv-text-secondary);
    min-width: 0;
}

/* Supported formats grid */
.ddv-formats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 0.85rem;
    margin: 0.5rem 0;
}

.ddv-format-card {
    background: var(--ddv-bg);
    border: 1px solid var(--ddv-border-light);
    border-radius: var(--ddv-radius-sm);
    padding: 0.9rem 1rem;
    min-width: 0;
}

.ddv-format-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
}

.ddv-format-name { font-weight: 600; color: var(--ddv-text); font-size: 0.95rem; }

.ddv-format-type {
    font-size: 0.7rem;
    text-transform: uppercase;
    padding: 0.15rem 0.55rem;
    border-radius: 999px;
    background: var(--ddv-primary-light);
    color: var(--ddv-primary);
    font-weight: 600;
    letter-spacing: 0.04em;
    flex-shrink: 0;
}

.ddv-format-card p {
    margin: 0;
    font-size: 0.85rem;
    color: var(--ddv-text-muted);
    line-height: 1.55;
}

/* ============================================
   FAQ - unprefixed for global _footer.php handler
   ============================================ */
.ddv-info-card .faq-list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.ddv-info-card .faq-item {
    background: var(--ddv-bg);
    border: 1px solid var(--ddv-border-light);
    border-radius: var(--ddv-radius-sm);
    overflow: hidden;
}

.ddv-info-card .faq-question {
    width: 100%;
    display: flex !important;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: 0.85rem 1.1rem !important;
    background: transparent !important;
    color: var(--ddv-text) !important;
    border: none !important;
    border-radius: 0 !important;
    cursor: pointer;
    font-size: 0.95rem !important;
    font-weight: 600 !important;
    text-align: left;
    box-shadow: none !important;
    transition: background var(--ddv-transition);
}

.ddv-info-card .faq-question:hover { background: var(--ddv-bg-secondary) !important; }

.ddv-info-card .faq-question i {
    color: var(--ddv-primary);
    transition: transform var(--ddv-transition);
    flex-shrink: 0;
}

.ddv-info-card .faq-item.open .faq-question i { transform: rotate(180deg); }

.ddv-info-card .faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--ddv-transition), padding var(--ddv-transition);
    padding: 0 1.1rem;
}

.ddv-info-card .faq-item.open .faq-answer {
    max-height: 600px;
    padding: 0 1.1rem 1rem;
    border-top: 1px solid var(--ddv-border-light);
}

.ddv-info-card .faq-answer p {
    margin: 0.6rem 0 0;
    font-size: 0.9rem;
    color: var(--ddv-text-secondary);
    line-height: 1.65;
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 768px) {
    .tool-container { padding: 1rem 0.75rem; }
    .tool-title { font-size: 1.4rem; }
    .tool-description { font-size: 0.9rem; }

    .ddv-upload-section { padding: 1.25rem; }
    .ddv-upload-area { padding: 2rem 1rem; }
    .ddv-upload-title { font-size: 1.1rem; }

    .ddv-viewer-toolbar { gap: 0.5rem; }
    .ddv-toggle-btn span { display: none; }
    .ddv-toggle-btn { padding: 0.45rem 0.6rem !important; }

    .ddv-hex-search-input { width: 140px; }
    .ddv-hex-offset { font-size: 0.7rem; }

    .ddv-action-bar { padding: 0.85rem; }
    .ddv-btn { padding: 0.55rem 0.85rem !important; font-size: 0.85rem !important; }
    .ddv-btn span { display: inline; }

    .ddv-info-card { padding: 1.15rem; }
    .ddv-info-card h2 { font-size: 1.1rem; }

    .ddv-stage-connector { max-width: 18px; }
    .ddv-stage-label { font-size: 0.65rem; }
    .ddv-processing-card { padding: 1.25rem 1rem; min-width: 0; }
}

@media (max-width: 480px) {
    .ddv-file-info-bar { gap: 0.6rem; padding: 0.7rem 0.9rem; }
    .ddv-file-info-item { font-size: 0.8rem; }
    .ddv-format-badge { margin-left: 0; }
    .ddv-related-tools-box { padding: 0.85rem; }
}