/* ============================================
   SVG Editor - Soft Studio Theme
   A minimalistic, pleasant, paper-like workspace
   ============================================ */

/* CSS Variables */
:root {
    --bg-workspace: #f8f7f4;
    --bg-canvas: #ffffff;
    --bg-panel: rgba(255, 255, 255, 0.95);
    --shadow-soft: 0 4px 20px rgba(0, 0, 0, 0.08);
    --shadow-hover: 0 6px 24px rgba(0, 0, 0, 0.12);
    --shadow-active: 0 2px 8px rgba(0, 0, 0, 0.1);

    --accent: #4a9c94;
    --accent-light: #5fb8ae;
    --accent-soft: rgba(74, 156, 148, 0.15);

    --danger: #e07068;
    --danger-soft: rgba(224, 112, 104, 0.15);

    --text-primary: #2d3436;
    --text-secondary: #636e72;
    --text-muted: #b2bec3;

    --border-light: rgba(0, 0, 0, 0.06);
    --border-medium: rgba(0, 0, 0, 0.1);

    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;

    --transition-fast: 0.15s ease;
    --transition-smooth: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'DM Sans', -apple-system, BlinkMacSystemFont, sans-serif;
    background-color: var(--bg-workspace);
    color: var(--text-primary);
    overflow: hidden;
    -webkit-font-smoothing: antialiased;
}

/* App Container */
.app {
    display: flex;
    flex-direction: column;
    height: 100vh;
    position: relative;
}

/* Canvas Container */
#canvas-container {
    flex: 1;
    background-color: var(--bg-workspace);
    position: relative;
    overflow: auto;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 40px 80px;
}

#svg-canvas {
    display: block;
    cursor: crosshair;
    background-color: var(--bg-canvas);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-soft);
    transition: box-shadow var(--transition-smooth);
}

#svg-canvas:hover {
    box-shadow: var(--shadow-hover);
}

#svg-canvas.cursor-select {
    cursor: default;
}

#svg-canvas.cursor-move {
    cursor: move;
}

#svg-canvas.cursor-delete {
    cursor: not-allowed;
}

/* Floating Panels */
.floating-panel {
    position: fixed;
    background: var(--bg-panel);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-soft);
    padding: 8px;
    z-index: 100;
    transition: box-shadow var(--transition-smooth), transform var(--transition-smooth);
}

.floating-panel:hover {
    box-shadow: var(--shadow-hover);
}

/* Tools Panel (Left Side) */
#tools-panel {
    left: 20px;
    top: 50%;
    transform: translateY(-50%);
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.tool-divider {
    height: 1px;
    background: var(--border-light);
    margin: 4px 0;
}

/* Tool Buttons */
.tool-btn {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    color: var(--text-secondary);
    transition: all var(--transition-fast);
    position: relative;
}

.tool-btn svg {
    width: 20px;
    height: 20px;
    transition: transform var(--transition-fast);
}

.tool-btn:hover {
    background: var(--accent-soft);
    color: var(--accent);
}

.tool-btn:hover svg {
    transform: scale(1.1);
}

.tool-btn:active {
    transform: scale(0.95);
}

.tool-btn.active {
    background: var(--accent);
    color: white;
    box-shadow: 0 2px 8px rgba(74, 156, 148, 0.4);
}

.tool-btn.danger:hover {
    background: var(--danger-soft);
    color: var(--danger);
}

.tool-btn.danger.active {
    background: var(--danger);
    color: white;
    box-shadow: 0 2px 8px rgba(224, 112, 104, 0.4);
}

/* Tooltip styling */
.tool-btn[title],
.action-btn[title],
.color-input-wrap[title],
.checkbox-wrap[title],
.stroke-width-wrap[title],
.canvas-size-group[title] {
    position: relative;
}

.tool-btn::after,
.action-btn::after {
    content: attr(title);
    position: absolute;
    left: calc(100% + 8px);
    top: 50%;
    transform: translateY(-50%);
    background: var(--text-primary);
    color: white;
    padding: 6px 10px;
    border-radius: var(--radius-sm);
    font-size: 12px;
    font-weight: 500;
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-fast);
    z-index: 1000;
}

.tool-btn:hover::after,
.action-btn:hover::after {
    opacity: 1;
}

/* Properties Panel (Bottom Right) */
#properties-panel {
    right: 20px;
    bottom: 60px;
    display: flex;
    gap: 12px;
    align-items: center;
    padding: 10px 14px;
}

.prop-group {
    display: flex;
    align-items: center;
    gap: 6px;
}

.color-input-wrap {
    position: relative;
    width: 36px;
    height: 36px;
}

.color-input-wrap input[type="color"] {
    width: 100%;
    height: 100%;
    border: 2px solid var(--border-medium);
    border-radius: var(--radius-sm);
    cursor: pointer;
    background: transparent;
    padding: 0;
    appearance: none;
    -webkit-appearance: none;
}

.color-input-wrap input[type="color"]::-webkit-color-swatch-wrapper {
    padding: 2px;
}

.color-input-wrap input[type="color"]::-webkit-color-swatch {
    border: none;
    border-radius: 4px;
}

.color-input-wrap input[type="color"]:hover {
    border-color: var(--accent);
}

.color-input-wrap .color-icon {
    position: absolute;
    bottom: -2px;
    right: -2px;
    width: 14px;
    height: 14px;
    background: var(--bg-panel);
    border-radius: 50%;
    pointer-events: none;
    color: var(--text-muted);
}

/* Expandable Slider Widget */
.expandable-slider {
    position: relative;
    display: flex;
    align-items: center;
}

.slider-trigger {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 6px 10px;
    border: 2px solid var(--border-medium);
    border-radius: var(--radius-sm);
    background: var(--bg-canvas);
    cursor: pointer;
    transition: all var(--transition-fast);
    user-select: none;
}

.slider-trigger:hover {
    border-color: var(--accent);
}

.expandable-slider.expanded .slider-trigger {
    border-color: var(--accent);
    background: var(--accent-soft);
}

.slider-icon {
    width: 16px;
    height: 16px;
    color: var(--text-muted);
    transition: color var(--transition-fast);
}

.slider-trigger:hover .slider-icon,
.expandable-slider.expanded .slider-icon {
    color: var(--accent);
}

.slider-value {
    font-size: 12px;
    font-weight: 500;
    color: var(--text-secondary);
    min-width: 20px;
    text-align: center;
}

.slider-panel {
    position: absolute;
    bottom: calc(100% + 8px);
    left: 50%;
    transform: translateX(-50%) scale(0.9);
    background: var(--bg-panel);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-soft);
    padding: 12px 16px;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: all var(--transition-smooth);
    z-index: 200;
}

.expandable-slider.expanded .slider-panel {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: translateX(-50%) scale(1);
}

.slider-panel input[type="range"] {
    width: 100px;
    height: 4px;
    appearance: none;
    -webkit-appearance: none;
    background: var(--border-medium);
    border-radius: 2px;
    cursor: pointer;
}

.slider-panel input[type="range"]::-webkit-slider-thumb {
    appearance: none;
    -webkit-appearance: none;
    width: 14px;
    height: 14px;
    background: var(--accent);
    border-radius: 50%;
    cursor: pointer;
    transition: transform var(--transition-fast);
}

.slider-panel input[type="range"]::-webkit-slider-thumb:hover {
    transform: scale(1.2);
}

.slider-panel input[type="range"]::-moz-range-thumb {
    width: 14px;
    height: 14px;
    background: var(--accent);
    border-radius: 50%;
    border: none;
    cursor: pointer;
    transition: transform var(--transition-fast);
}

/* Fill Color Disabled State */
.fill-color-wrap.disabled {
    opacity: 0.4;
    pointer-events: none;
}

.fill-color-wrap.disabled input[type="color"] {
    cursor: not-allowed;
}

.checkbox-wrap {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 2px solid var(--border-medium);
    border-radius: var(--radius-sm);
    cursor: pointer;
    color: var(--text-muted);
    transition: all var(--transition-fast);
}

.checkbox-wrap input {
    display: none;
}

.checkbox-wrap svg {
    width: 18px;
    height: 18px;
}

.checkbox-wrap:hover {
    border-color: var(--accent);
    color: var(--accent);
}

.checkbox-wrap:has(input:checked) {
    background: var(--accent);
    border-color: var(--accent);
    color: white;
}


/* File Panel (Top Right) */
#file-panel {
    right: 20px;
    top: 20px;
    display: flex;
    gap: 4px;
}

#file-panel .action-btn::after {
    left: auto;
    right: calc(100% + 8px);
    top: 50%;
    transform: translateY(-50%);
}

.action-btn {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    color: var(--text-secondary);
    transition: all var(--transition-fast);
    position: relative;
}

.action-btn svg {
    width: 18px;
    height: 18px;
    transition: transform var(--transition-fast);
}

.action-btn:hover {
    background: var(--accent-soft);
    color: var(--accent);
}

.action-btn:hover svg {
    transform: scale(1.1);
}

.action-btn:active {
    transform: scale(0.95);
}

.action-btn.danger:hover {
    background: var(--danger-soft);
    color: var(--danger);
}

/* Canvas Size Panel (Top Left) */
#canvas-panel {
    left: 80px;
    top: 20px;
    padding: 8px 12px;
}

.canvas-size-group {
    display: flex;
    align-items: center;
    gap: 8px;
}

.canvas-size-group svg {
    width: 18px;
    height: 18px;
    color: var(--text-muted);
}

.canvas-size-group input {
    width: 60px;
    height: 32px;
    padding: 0 8px;
    border: 2px solid var(--border-medium);
    border-radius: var(--radius-sm);
    background: var(--bg-canvas);
    color: var(--text-primary);
    font-family: inherit;
    font-size: 13px;
    font-weight: 500;
    text-align: center;
    transition: border-color var(--transition-fast);
}

.canvas-size-group input:hover,
.canvas-size-group input:focus {
    border-color: var(--accent);
    outline: none;
}

.canvas-size-group input::placeholder {
    color: var(--text-muted);
}

.size-separator {
    color: var(--text-muted);
    font-size: 14px;
}

/* Status Bar */
#status-bar {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: transparent;
    padding: 12px 24px;
    display: flex;
    justify-content: space-between;
    font-size: 12px;
    z-index: 50;
}

#status-text {
    color: var(--text-secondary);
    font-weight: 500;
}

#cursor-position {
    color: var(--text-muted);
    font-variant-numeric: tabular-nums;
}

/* Selection Highlight */
.selected {
    filter: drop-shadow(0 0 6px rgba(74, 156, 148, 0.6));
}

/* Selection Box */
.selection-box {
    pointer-events: none;
}

/* SVG Elements Cursor - default for drawing tools */
#svg-canvas line,
#svg-canvas circle,
#svg-canvas rect,
#svg-canvas path,
#svg-canvas polyline,
#svg-canvas polygon,
#svg-canvas ellipse {
    cursor: crosshair;
}

/* SVG Elements Cursor - only show pointer for select tool */
#svg-canvas.cursor-select line,
#svg-canvas.cursor-select circle,
#svg-canvas.cursor-select rect,
#svg-canvas.cursor-select path,
#svg-canvas.cursor-select polyline,
#svg-canvas.cursor-select polygon,
#svg-canvas.cursor-select ellipse {
    cursor: pointer;
}

#svg-canvas.cursor-delete line,
#svg-canvas.cursor-delete circle,
#svg-canvas.cursor-delete rect,
#svg-canvas.cursor-delete path,
#svg-canvas.cursor-delete polyline,
#svg-canvas.cursor-delete polygon,
#svg-canvas.cursor-delete ellipse {
    cursor: not-allowed;
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.floating-panel {
    animation: fadeIn 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

#tools-panel {
    animation: fadeIn 0.3s cubic-bezier(0.4, 0, 0.2, 1) 0.1s both;
}

#properties-panel {
    animation: fadeIn 0.3s cubic-bezier(0.4, 0, 0.2, 1) 0.15s both;
}

#file-panel {
    animation: fadeIn 0.3s cubic-bezier(0.4, 0, 0.2, 1) 0.2s both;
}

#canvas-panel {
    animation: fadeIn 0.3s cubic-bezier(0.4, 0, 0.2, 1) 0.25s both;
}

/* Responsive Design */
@media (max-width: 768px) {
    #canvas-container {
        padding: 20px;
        padding-bottom: 120px;
    }

    #tools-panel {
        left: 10px;
        top: auto;
        bottom: 120px;
        transform: none;
        flex-direction: row;
    }

    .tool-divider {
        width: 1px;
        height: 24px;
        margin: 0 4px;
    }

    #properties-panel {
        right: 10px;
        left: 10px;
        bottom: 50px;
        justify-content: center;
        flex-wrap: wrap;
    }

    #file-panel {
        right: 10px;
        top: 10px;
    }

    #canvas-panel {
        left: 10px;
        top: 10px;
    }

    .tool-btn::after,
    .action-btn::after {
        display: none;
    }
}

/* Focus styles for accessibility */
.tool-btn:focus-visible,
.action-btn:focus-visible,
input:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

/* Number input spin button styling */
input[type="number"]::-webkit-inner-spin-button,
input[type="number"]::-webkit-outer-spin-button {
    opacity: 0;
}

input[type="number"]:hover::-webkit-inner-spin-button,
input[type="number"]:hover::-webkit-outer-spin-button {
    opacity: 1;
}