/* ===== whiteboard-panels.css ===== */
/* Unified design system for all whiteboard tool panels. */
/* Panels: graph, canvas-controls, pen-settings, shapes, table, bezier */


/* ============================================================
   SHARED PANEL FOUNDATIONS
   All vertical panels share these base properties.
   Pen settings is excluded — it's a compact horizontal bar.
   ============================================================ */

/* --- Container --- */
.graph-input-panel,
.canvas-controls-panel,
.shapes-panel,
.table-panel,
.image-panel,
#bezierPanel {
    position: absolute;
    background: var(--color-bg-primary);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.12),
                0 2px 8px rgba(0, 0, 0, 0.08);
    padding: 12px;
    z-index: 1000;
    display: flex;
    flex-direction: column;
    max-height: calc(100vh - 120px);
    transition: opacity 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

/* --- Hidden state (consistent fade) --- */
.graph-input-panel.hidden,
.canvas-controls-panel.hidden,
.shapes-panel.hidden,
.table-panel.hidden,
.image-panel.hidden,
#bezierPanel.hidden {
    opacity: 0;
    pointer-events: none;
}

/* --- Dark theme --- */
[data-theme="dark"] .graph-input-panel,
[data-theme="dark"] .canvas-controls-panel,
[data-theme="dark"] .shapes-panel,
[data-theme="dark"] .table-panel,
[data-theme="dark"] .image-panel,
[data-theme="dark"] #bezierPanel {
    background: var(--color-bg-secondary);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4),
                0 2px 8px rgba(0, 0, 0, 0.3);
}

/* --- Header (drag handle) --- */
.graph-input-header,
.canvas-controls-panel-header,
.shapes-panel-header,
.table-panel-header,
.bezier-panel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-bottom: 10px;
    margin-bottom: 12px;
    border-bottom: 1px solid var(--color-border);
    cursor: move;
    user-select: none;
}

/* --- Title --- */
.graph-input-title,
.canvas-controls-panel-title,
.shapes-panel-title,
.table-panel-title,
.bezier-panel-title {
    font-size: 14px;
    font-weight: 600;
    color: var(--color-text-primary);
    display: flex;
    align-items: center;
    gap: 8px;
    margin: 0;
}

/* --- Close button --- */
.graph-close-btn,
.canvas-controls-panel-close,
.shapes-panel-close,
.table-panel-close,
.bezier-panel-close {
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
    color: var(--color-text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 4px;
    transition: all 0.15s ease;
}

.graph-close-btn:hover,
.canvas-controls-panel-close:hover,
.shapes-panel-close:hover,
.table-panel-close:hover,
.bezier-panel-close:hover {
    background: var(--color-bg-hover);
    color: var(--color-text-primary);
}

.graph-close-btn:active,
.canvas-controls-panel-close:active,
.shapes-panel-close:active,
.table-panel-close:active,
.bezier-panel-close:active {
    transform: scale(0.95);
}

/* --- Body --- */
.graph-input-body,
.canvas-controls-panel-body,
.shapes-panel-body,
.table-panel-body,
.bezier-panel-body {
    display: flex;
    flex-direction: column;
    gap: 12px;
    overflow-y: auto;
    flex: 1;
}

/* Scrollbar for panel bodies */
.graph-input-body::-webkit-scrollbar,
.canvas-controls-panel-body::-webkit-scrollbar,
.shapes-panel-body::-webkit-scrollbar,
.table-panel-body::-webkit-scrollbar,
.bezier-panel-body::-webkit-scrollbar {
    width: 6px;
}

.graph-input-body::-webkit-scrollbar-track,
.canvas-controls-panel-body::-webkit-scrollbar-track,
.shapes-panel-body::-webkit-scrollbar-track,
.table-panel-body::-webkit-scrollbar-track,
.bezier-panel-body::-webkit-scrollbar-track {
    background: transparent;
}

.graph-input-body::-webkit-scrollbar-thumb,
.canvas-controls-panel-body::-webkit-scrollbar-thumb,
.shapes-panel-body::-webkit-scrollbar-thumb,
.table-panel-body::-webkit-scrollbar-thumb,
.bezier-panel-body::-webkit-scrollbar-thumb {
    background: var(--scrollbar);
    border-radius: 3px;
}

/* --- Shared action button style --- */
.graph-plot-btn,
.table-create-btn,
.bezier-create-btn {
    width: 100%;
    padding: 8px 16px;
    background: var(--color-accent);
    color: white;
    border: none;
    border-radius: 6px;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.15s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.graph-plot-btn:hover,
.table-create-btn:hover,
.bezier-create-btn:hover {
    background: var(--color-accent-hover);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.graph-plot-btn:active,
.table-create-btn:active,
.bezier-create-btn:active {
    transform: translateY(0);
}

.graph-plot-btn svg,
.table-create-btn svg,
.bezier-create-btn svg {
    width: 16px;
    height: 16px;
}

/* --- Shared info box --- */
.shape-info,
.table-info {
    font-size: 12px;
    color: var(--color-text-secondary);
    line-height: 1.5;
    padding: 8px 12px;
    background: var(--color-bg-tertiary);
    border-radius: 6px;
}

.graph-error {
    font-size: 12px;
    color: #ef4444;
    min-height: 16px;
    padding-left: 4px;
}


/* ============================================================
   PER-PANEL POSITION & SIZE
   ============================================================ */

.graph-input-panel {
    top: 80px;
    left: 20px;
    width: 320px;
}

.canvas-controls-panel {
    top: 80px;
    right: 20px;
    left: auto;
    width: 260px;
}

.shapes-panel {
    top: 80px;
    right: 80px;
    width: 290px;
}

.table-panel {
    top: 80px;
    left: 20px;
    width: 320px;
}

#bezierPanel {
    top: 100px;
    left: 50%;
    transform: translateX(-50%);
    width: 360px;
}

.image-panel {
    top: 80px;
    right: 20px;
    left: auto;
    width: 260px;
}

/* Bezier hidden must preserve the centering transform */
#bezierPanel.hidden {
    transform: translateX(-50%);
}


/* ============================================================
   PEN SETTINGS PANEL (horizontal compact bar — separate design)
   ============================================================ */

.pen-settings-panel {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--color-bg-primary);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.12),
                0 2px 8px rgba(0, 0, 0, 0.08);
    padding: 10px 16px;
    z-index: 1000;
    transition: opacity 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    align-items: center;
    gap: 12px;
    max-width: calc(100vw - 40px);
}

.pen-settings-panel.hidden {
    opacity: 0;
    pointer-events: none;
}

[data-theme="dark"] .pen-settings-panel {
    background: var(--color-bg-secondary);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4),
                0 2px 8px rgba(0, 0, 0, 0.3);
}

.pen-settings-panel-header {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: move;
    user-select: none;
    padding: 0;
    margin: 0;
    border: none;
}

.pen-settings-panel-title {
    font-size: 12px;
    font-weight: 600;
    color: var(--color-text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.pen-settings-panel-close {
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
    color: var(--color-text-secondary);
    border-radius: 4px;
    transition: all 0.15s ease;
    margin-left: 4px;
}

.pen-settings-panel-close:hover {
    background: var(--color-bg-hover);
    color: var(--color-text-primary);
}

.pen-settings-panel-body {
    display: flex;
    align-items: center;
    gap: 12px;
}

/* Vertical dividers between sections */
.pen-settings-divider {
    width: 1px;
    height: 32px;
    background: var(--color-border);
    margin: 0 4px;
}

.pen-settings-group {
    display: flex;
    align-items: center;
    gap: 8px;
}

.pen-settings-label {
    font-size: 11px;
    font-weight: 600;
    color: var(--color-text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    white-space: nowrap;
}

/* Compact Pen Size Control */
.pen-size-control {
    display: flex;
    align-items: center;
    gap: 8px;
}

.pen-size-slider {
    width: 100px;
    height: 4px;
    border-radius: 2px;
    background: var(--color-bg-tertiary) !important;
    outline: none;
    -webkit-appearance: none;
}

.pen-size-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--color-accent);
    cursor: pointer;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.pen-size-slider::-moz-range-thumb {
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--color-accent);
    cursor: pointer;
    border: none;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.pen-size-value {
    font-size: 13px;
    font-weight: 600;
    color: var(--color-accent);
    font-family: var(--font-mono);
    min-width: 24px;
    text-align: center;
}

/* Horizontal Color Picker */
.pen-color-picker {
    display: flex;
    align-items: center;
    gap: 6px;
}

.pen-color-btn {
    width: 32px;
    height: 32px;
    border: 2px solid transparent;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.15s ease;
    position: relative;
}

.pen-color-btn:hover {
    transform: scale(1.15);
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.2);
}

.pen-color-btn.active {
    border-color: var(--color-accent);
    box-shadow: 0 0 0 1px var(--color-bg-primary),
                0 0 0 3px var(--color-accent);
}

.pen-custom-color {
    width: 32px;
    height: 32px;
    border: 2px dashed var(--color-border);
    border-radius: 8px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.15s ease;
    position: relative;
    overflow: hidden;
}

.pen-custom-color:hover {
    border-color: var(--color-accent);
    background: var(--color-bg-tertiary);
}

.pen-custom-color input[type="color"] {
    position: absolute;
    width: 100%;
    height: 100%;
    opacity: 0;
    cursor: pointer;
}

.pen-custom-color svg {
    width: 16px;
    height: 16px;
    color: var(--color-text-secondary);
    pointer-events: none;
}

/* Compact Current Color Display */
.pen-current-color {
    display: flex;
    align-items: center;
    gap: 6px;
}

.current-color-label {
    font-size: 11px;
    font-weight: 600;
    color: var(--color-text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.current-color-swatch {
    width: 24px;
    height: 24px;
    border-radius: 6px;
    border: 2px solid var(--color-border);
    box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.1);
}

.current-color-hex {
    font-size: 11px;
    font-weight: 600;
    font-family: var(--font-mono);
    color: var(--color-text-primary);
}


/* ============================================================
   SHAPES PANEL — Content
   ============================================================ */

/* Shape Grid */
.shapes-grid {
    display: grid;
    grid-template-columns: repeat(4, 0fr);
    gap: 8px;
}

.shape-btn {
    aspect-ratio: 1;
    border: 2px solid var(--color-border);
    border-radius: 8px;
    background: var(--color-bg-primary);
    cursor: pointer;
    display: flex;
    height: 60px;
    width: 60px;
    align-items: center;
    justify-content: center;
    transition: all 0.15s ease;
    padding: 12px;
    color: var(--color-text-primary);
}

.shape-btn:hover {
    background: var(--color-bg-hover);
    border-color: var(--color-accent);
    transform: scale(1.05);
}

.shape-btn.active {
    background: var(--color-accent);
    border-color: var(--color-accent);
    color: white;
}

.shape-btn svg {
    width: 25px;
    height: 25px;
    stroke: currentColor;
}

.shape-btn.active svg {
    stroke: white;
}

/* Shape Options */
.shape-options {
    display: flex;
    flex-direction: column;
    gap: 12px;
    padding-top: 12px;
    border-top: 1px solid var(--color-border);
}

.shape-option {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.shape-option-label {
    font-size: 13px;
    font-weight: 500;
    color: var(--color-text-primary);
}

.shape-toggle {
    position: relative;
    width: 44px;
    height: 24px;
}

.shape-toggle input {
    opacity: 0;
    width: 0;
    height: 0;
}

.shape-toggle-slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--color-primary);
    transition: 0.3s;
    border-radius: 24px;
}

.shape-toggle-slider:before {
    position: absolute;
    content: "";
    height: 18px;
    width: 18px;
    left: 3px;
    bottom: 3px;
    background-color: white;
    transition: 0.3s;
    border-radius: 50%;
}

.shape-toggle input:checked + .shape-toggle-slider {
    background-color: var(--color-accent);
}

.shape-toggle input:checked + .shape-toggle-slider:before {
    transform: translateX(20px);
}

/* Shape Info */
.shape-info-title {
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: 4px;
}

/* Shape Color Picker */
.shape-color-picker {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
}

.shape-color-option {
    width: 28px;
    height: 28px;
    border-radius: 6px;
    border: 2px solid transparent;
    cursor: pointer;
    transition: all 0.15s ease;
}

.shape-color-option:hover {
    transform: scale(1.15);
}

.shape-color-option.active {
    border-color: var(--color-accent);
    box-shadow: 0 0 0 1px var(--color-bg-primary),
                0 0 0 3px var(--color-accent);
}

/* Shape Size Controls */
.shape-size-input {
    display: flex;
    align-items: center;
    gap: 8px;
}

.shape-size-input label {
    font-size: 13px;
    font-weight: 500;
    color: var(--color-text-secondary);
    min-width: 48px;
}

.shape-size-input input[type="number"] {
    flex: 1;
    padding: 6px 10px;
    border: 1px solid var(--color-border);
    border-radius: 6px;
    font-size: 13px;
    background: var(--input-bg);
    color: var(--color-text-primary);
}

.shape-size-input input[type="number"]:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

/* Shape Line Width Slider */
.shape-line-width {
    display: flex;
    align-items: center;
    gap: 8px;
}

.shape-line-width label {
    font-size: 13px;
    font-weight: 500;
    color: var(--color-text-secondary);
    min-width: 48px;
}

.shape-line-slider {
    flex: 1;
    height: 4px;
    border-radius: 2px;
    background: var(--color-bg-tertiary);
    outline: none;
    -webkit-appearance: none;
}

.shape-line-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--color-accent);
    cursor: pointer;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.shape-line-slider::-moz-range-thumb {
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--color-accent);
    cursor: pointer;
    border: none;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.shape-line-value {
    font-size: 13px;
    font-weight: 600;
    font-family: var(--font-mono);
    color: var(--color-accent);
    min-width: 24px;
    text-align: center;
}


/* ============================================================
   TABLE PANEL — Content
   ============================================================ */

.table-setting {
    margin-bottom: 12px;
}

.table-setting label {
    display: block;
    margin-bottom: 4px;
    font-weight: 500;
    font-size: 13px;
    color: var(--color-text-secondary);
}

.table-setting input[type="number"],
.table-setting select {
    width: 100%;
    padding: 6px 10px;
    border: 1px solid var(--color-border);
    border-radius: 6px;
    background: var(--input-bg);
    color: var(--color-text-primary);
    font-size: 13px;
}

.table-setting input[type="number"]:focus,
.table-setting select:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.table-panel hr {
    border: none;
    border-top: 1px solid var(--color-border);
    margin: 12px 0;
}

.table-templates {
    margin-bottom: 12px;
}

.table-templates label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    font-size: 13px;
    color: var(--color-text-secondary);
}

.table-templates-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 8px;
}

.table-template-btn {
    background: var(--color-bg-secondary);
    border: 2px solid var(--color-border);
    border-radius: 6px;
    padding: 8px;
    cursor: pointer;
    transition: all 0.15s ease;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
}

.table-template-btn:hover {
    border-color: var(--color-accent);
    background: var(--color-bg-tertiary);
}

.table-template-btn.active {
    border-color: var(--color-accent);
    background: var(--color-accent-light);
}

.template-preview {
    width: 100%;
    aspect-ratio: 1;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    grid-template-rows: repeat(2, 1fr);
    border-radius: 4px;
    overflow: hidden;
}

.template-cell {
    border: 1px solid rgba(0, 0, 0, 0.1);
}

[data-theme="dark"] .template-cell {
    border-color: rgba(255, 255, 255, 0.1);
}

.table-template-btn span {
    font-size: 12px;
    color: var(--color-text-secondary);
    font-weight: 500;
}

.table-template-btn.active span {
    color: var(--color-text-primary);
}

.table-info strong {
    color: var(--color-text-primary);
}


/* ============================================================
   BEZIER PANEL — Content
   ============================================================ */

.bezier-setting {
    margin-bottom: 16px;
}

.bezier-setting:last-child {
    margin-bottom: 0;
}

.bezier-setting label {
    display: block;
    margin-bottom: 6px;
    font-weight: 500;
    font-size: 12px;
    color: var(--color-text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.bezier-setting input[type="number"] {
    width: 100%;
    padding: 6px 10px;
    border: 1px solid var(--color-border);
    border-radius: 6px;
    background: var(--input-bg);
    color: var(--color-text-primary);
    font-size: 13px;
    font-family: var(--font-body);
    transition: border-color 0.15s ease;
}

.bezier-setting input[type="number"]:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}


/* ============================================================
   CANVAS CONTROLS — Content overrides
   ============================================================ */

.canvas-controls-panel-body {
    gap: 2px;
}

/* Keep original dropdown styles for compatibility but hide it */
.canvas-controls-menu {
    display: none !important;
}


/* ============================================================
   SHARED PANEL COMPONENTS
   (Generic reusable classes for any panel content)
   ============================================================ */

/* Setting Groups */
.panel-setting {
    margin-bottom: 16px;
}

.panel-setting:last-child {
    margin-bottom: 0;
}

.panel-setting-label {
    display: block;
    margin-bottom: 6px;
    font-weight: 500;
    font-size: 12px;
    color: var(--color-text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Slider Controls */
.panel-slider {
    width: 100%;
    height: 4px;
    border-radius: 2px;
    background: var(--color-border);
    outline: none;
    -webkit-appearance: none;
}

.panel-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--color-accent);
    cursor: pointer;
    transition: all 0.15s ease;
    border: 2px solid white;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.15);
}

.panel-slider::-webkit-slider-thumb:hover {
    transform: scale(1.15);
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.2);
}

.panel-slider::-moz-range-thumb {
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--color-accent);
    cursor: pointer;
    border: 2px solid white;
    transition: all 0.15s ease;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.15);
}

.panel-slider::-moz-range-thumb:hover {
    transform: scale(1.15);
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.2);
}

.panel-value-display {
    display: inline-block;
    margin-left: 8px;
    font-size: 11px;
    color: var(--color-text-tertiary);
    font-family: var(--font-mono);
    min-width: 32px;
    text-align: right;
}

/* Color Palette Grid */
.panel-color-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 8px;
}

.panel-color-btn {
    width: 100%;
    aspect-ratio: 1;
    border-radius: 6px;
    border: 2px solid transparent;
    cursor: pointer;
    transition: all 0.15s ease;
    position: relative;
}

.panel-color-btn:hover {
    transform: scale(1.08);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.panel-color-btn.active {
    border-color: var(--color-text-primary);
    transform: scale(1.08);
    box-shadow: 0 0 0 3px var(--color-bg-secondary);
}

.panel-custom-color {
    width: 100%;
    aspect-ratio: 1;
    border-radius: 6px;
    border: 2px solid var(--color-border);
    cursor: pointer;
    overflow: hidden;
    transition: all 0.15s ease;
    background: linear-gradient(135deg,
        #ef4444 0%, #f97316 16.67%,
        #f59e0b 33.33%, #10b981 50%,
        #3b82f6 66.67%, #8b5cf6 83.33%,
        #ec4899 100%
    );
}

.panel-custom-color:hover {
    transform: scale(1.08);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.panel-custom-color input[type="color"] {
    opacity: 0;
    position: absolute;
    width: 100%;
    height: 100%;
    cursor: pointer;
}

/* Checkbox Setting */
.panel-checkbox-setting {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px;
    background: var(--color-bg-tertiary);
    border-radius: 6px;
    transition: background 0.15s ease;
}

.panel-checkbox-setting:hover {
    background: var(--color-bg-hover);
}

.panel-checkbox-setting input[type="checkbox"] {
    width: 16px;
    height: 16px;
    cursor: pointer;
    accent-color: var(--color-accent);
}

.panel-checkbox-setting label {
    margin: 0;
    cursor: pointer;
    user-select: none;
    font-size: 13px;
    color: var(--color-text-primary);
    font-weight: 500;
}

/* Input Fields */
.panel-input,
.panel-select {
    width: 100%;
    padding: 6px 10px;
    border: 1px solid var(--color-border);
    border-radius: 6px;
    background: var(--input-bg);
    color: var(--color-text-primary);
    font-size: 13px;
    font-family: var(--font-body);
    transition: border-color 0.15s ease;
}

.panel-input:focus,
.panel-select:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

/* Action Buttons */
.panel-btn {
    width: 100%;
    padding: 8px 16px;
    background: var(--color-accent);
    color: white;
    border: none;
    border-radius: 6px;
    font-weight: 600;
    font-size: 13px;
    cursor: pointer;
    transition: all 0.15s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.panel-btn:hover {
    background: var(--color-accent-hover);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

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

.panel-btn svg {
    width: 16px;
    height: 16px;
}

/* Info Box */
.panel-info {
    padding: 10px 12px;
    background: var(--color-bg-tertiary);
    border-left: 3px solid var(--color-accent);
    border-radius: 6px;
    font-size: 12px;
    color: var(--color-text-secondary);
    line-height: 1.5;
}

.panel-info strong {
    color: var(--color-text-primary);
    font-weight: 600;
}

/* Dividers */
.panel-divider {
    height: 1px;
    background: var(--color-border);
    margin: 16px 0;
}

/* Panel description text */
.panel-description {
    font-size: 12px;
    color: var(--color-text-secondary);
    line-height: 1.5;
}

/* ============================================================
   IMAGE PANEL STYLES
   ============================================================ */

.image-panel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 16px;
    cursor: move;
    user-select: none;
}

.image-panel-title {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 600;
    font-size: 14px;
    color: var(--color-text-primary);
}

.image-panel-close {
    background: none;
    border: none;
    color: var(--color-text-tertiary);
    cursor: pointer;
    padding: 4px;
    border-radius: 4px;
    transition: all 0.15s;
}

.image-panel-close:hover {
    background: var(--color-bg-tertiary);
    color: var(--color-text-primary);
}

.image-panel-body {
    display: flex;
    flex-direction: column;
    gap: 16px;
    overflow-y: auto;
    max-height: calc(100vh - 200px);
}

.image-section {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.image-section h4 {
    font-size: 12px;
    font-weight: 600;
    color: var(--color-text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin: 0;
}

.image-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 16px;
    border: 1px solid var(--color-border);
    border-radius: 8px;
    background: var(--color-bg-primary);
    color: var(--color-text-primary);
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.15s;
}

.image-btn:hover {
    background: var(--color-bg-tertiary);
    border-color: var(--color-accent);
}

.image-btn.primary {
    background: var(--color-accent);
    color: white;
    border-color: var(--color-accent);
}

.image-btn.primary:hover {
    opacity: 0.9;
}

.image-btn.danger {
    color: #ef4444;
    border-color: #ef4444;
}

.image-btn.danger:hover {
    background: #fef2f2;
    border-color: #dc2626;
}

.image-hint {
    font-size: 12px;
    color: var(--color-text-tertiary);
    margin: 0;
    text-align: center;
}

.image-control {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.image-control label {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 13px;
}

.label-text {
    color: var(--color-text-secondary);
    font-weight: 500;
}

.label-value {
    color: var(--color-text-primary);
    font-weight: 600;
}

.image-slider {
    width: 100%;
    height: 4px;
    border-radius: 2px;
    background: var(--color-bg-tertiary);
    outline: none;
    -webkit-appearance: none;
}

.image-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--color-accent);
    cursor: pointer;
}

.image-slider::-moz-range-thumb {
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--color-accent);
    cursor: pointer;
    border: none;
}

.size-info {
    font-size: 13px;
    color: var(--color-text-primary);
    font-family: 'SF Mono', Monaco, monospace;
}

.image-actions {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-top: 8px;
}

.tips-list {
    margin: 0;
    padding-left: 20px;
    font-size: 12px;
    color: var(--color-text-secondary);
    line-height: 1.8;
}

.tips-list li {
    margin: 4px 0;
}