* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    overflow: hidden;
    background: #1a1625;
}

#toolbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: #2a2438;
    padding: 8px 12px;
    display: flex;
    gap: 10px;
    align-items: center;
    box-shadow: 0 2px 8px rgba(0,0,0,0.4);
    z-index: 1000;
}

.btn-group {
    display: flex;
    gap: 4px;
}

/* Dropdown Styles */
.dropdown {
    position: relative;
    display: inline-block;
}

.dropdown-toggle {
    display: flex;
    align-items: center;
    gap: 6px;
}

.icon-chevron {
    width: 14px;
    height: 14px;
    transition: transform 0.2s;
}

.dropdown.open .icon-chevron {
    transform: rotate(180deg);
}

.dropdown-menu {
    position: absolute;
    top: calc(100% + 4px);
    left: 0;
    background: rgba(42, 36, 56, 0.98);
    border: 1px solid #3d3550;
    border-radius: 2px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.4);
    backdrop-filter: blur(10px);
    min-width: 180px;
    z-index: 2000;
    opacity: 0;
    transform: translateY(-10px);
    pointer-events: none;
    transition: opacity 0.2s, transform 0.2s;
    padding: 4px 0;
}

.dropdown.open .dropdown-menu {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
}

.dropdown-item {
    width: 100%;
    padding: 8px 12px;
    background: transparent;
    color: #d4d1e0;
    border: none;
    text-align: left;
    cursor: pointer;
    transition: background 0.15s;
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
}

.dropdown-item:hover {
    background: rgba(139, 92, 246, 0.2);
}

.dropdown-item .icon {
    width: 18px;
    height: 18px;
}

.divider {
    width: 1px;
    height: 24px;
    background: #3d3550;
}

button {
    padding: 6px 12px;
    border: none;
    border-radius: 2px;
    font-size: 13px;
    cursor: pointer;
    transition: all 0.15s;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 6px;
}

.btn-add {
    background: #6366f1;
    color: white;
}

.btn-add:hover {
    background: #7c3aed;
}

.btn-warning {
    background: #f59e0b;
}

.btn-warning:hover {
    background: #d97706;
}

.btn-subtract {
    background: #ef4444;
}

.btn-subtract:hover {
    background: #dc2626;
}

.btn-tool {
    background: #3d3550;
    color: #b8b4c8;
}

.btn-tool:hover {
    background: #4a4560;
}

.btn-tool.active {
    background: #8b5cf6;
    color: white;
}

#canvas-container {
    position: fixed;
    top: 44px;
    left: 0;
    right: 0;
    bottom: 0;
}

#instructions {
    position: fixed;
    bottom: 12px;
    left: 12px;
    background: rgba(42, 36, 56, 0.95);
    color: #d4d1e0;
    padding: 10px 14px;
    border-radius: 2px;
    font-size: 12px;
    line-height: 1.5;
    backdrop-filter: blur(10px);
    transition: opacity 0.2s, transform 0.2s;
    border: 1px solid #3d3550;
    user-select: none;
}

#instructions.hidden {
    opacity: 0;
    transform: translateY(10px);
    pointer-events: none;
}

#instructions strong {
    display: block;
    margin-bottom: 2px;
    font-size: 12px;
    color: #8b5cf6;
}

.close-btn {
    position: absolute;
    top: 4px;
    right: 4px;
    background: transparent;
    border: none;
    color: #7c7890;
    font-size: 20px;
    cursor: pointer;
    padding: 0;
    width: 20px;
    height: 20px;
    line-height: 18px;
    transition: color 0.2s;
}

.close-btn:hover {
    color: #ff4444;
    background: transparent;
    transform: none;
}

.icon {
    width: 18px;
    height: 18px;
}

#position-panel {
    position: fixed;
    top: 56px;
    right: 12px;
    background: rgba(42, 36, 56, 0.98);
    padding: 10px;
    border-radius: 2px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.4);
    backdrop-filter: blur(10px);
    min-width: 180px;
    z-index: 1000;
    border: 1px solid #3d3550;
}

.panel-header {
    color: #8b5cf6;
    font-weight: 600;
    font-size: 11px;
    margin-bottom: 6px;
    padding-bottom: 4px;
    border-bottom: 1px solid #3d3550;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.input-group {
    display: flex;
    align-items: center;
    margin-bottom: 4px;
}

.input-group label {
    color: #b8b4c8;
    font-size: 11px;
    font-weight: 500;
    width: 24px;
}

.input-group input {
    flex: 1;
    padding: 4px 6px;
    background: #1a1625;
    border: 1px solid #3d3550;
    border-radius: 2px;
    color: #d4d1e0;
    font-size: 11px;
    outline: none;
    transition: border-color 0.15s;
}

.input-group input:focus {
    border-color: #8b5cf6;
}

.input-group input::-webkit-inner-spin-button,
.input-group input::-webkit-outer-spin-button {
    opacity: 1;
}

.reset-btn {
    padding: 3px 6px;
    margin-left: 4px;
    background: #1a1625;
    border: 1px solid #3d3550;
    border-radius: 2px;
    color: #8b5cf6;
    font-size: 12px;
    cursor: pointer;
    transition: all 0.15s;
    min-width: 24px;
    height: 24px;
}

.reset-btn:hover {
    background: #2a2438;
    border-color: #8b5cf6;
    color: #a78bfa;
    transform: rotate(-180deg);
}

/* Color Picker Styles */
.panel-header.collapsible {
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    user-select: none;
}

.panel-header.collapsible:hover {
    color: #a78bfa;
}

.chevron {
    width: 14px;
    height: 14px;
    transition: transform 0.2s;
}

.panel-header.collapsible.open .chevron {
    transform: rotate(180deg);
}

#color-section {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.2s ease-out;
}

#color-section.collapsed {
    max-height: 0;
}

#color-section.expanded {
    max-height: 600px;
}

#position-section,
#rotation-section,
#scale-section,
#skew-section {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.2s ease-out;
}

#position-section.collapsed,
#rotation-section.collapsed,
#scale-section.collapsed,
#skew-section.collapsed {
    max-height: 0;
}

#position-section.expanded {
    max-height: 200px;
}

#rotation-section.expanded {
    max-height: 200px;
}

#scale-section.expanded {
    max-height: 200px;
}

#skew-section.expanded {
    max-height: 400px;
}

#color-picker-container {
    display: flex;
    justify-content: center;
    margin: 10px 0;
}

.color-mode-tabs {
    display: flex;
    gap: 4px;
    margin-bottom: 8px;
}

.color-tab {
    flex: 1;
    padding: 4px 8px;
    background: #1a1625;
    color: #b8b4c8;
    border: 1px solid #3d3550;
    border-radius: 2px;
    font-size: 11px;
    cursor: pointer;
    transition: all 0.15s;
}

.color-tab:hover {
    background: #2a2438;
    border-color: #4a4560;
}

.color-tab.active {
    background: #8b5cf6;
    color: white;
    border-color: #8b5cf6;
}

.color-inputs {
    margin-bottom: 6px;
}

#color-alpha {
    flex: 1;
    margin-right: 6px;
}

#alpha-value {
    color: #b8b4c8;
    font-size: 11px;
    min-width: 36px;
    text-align: right;
}

#color-hex {
    text-transform: uppercase;
}

/* Settings Menu */
.settings-menu {
    position: fixed;
    top: 56px;
    right: 12px;
    background: rgba(38, 30, 58, 0.98);
    border-radius: 2px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.4);
    backdrop-filter: blur(10px);
    min-width: 200px;
    z-index: 1001;
    padding: 6px 0;
    transition: opacity 0.2s, transform 0.2s;
    border: 1px solid #3d3550;
}

.settings-menu.hidden {
    opacity: 0;
    transform: translateY(-10px);
    pointer-events: none;
}

.settings-item {
    padding: 6px 12px;
    transition: background 0.15s;
}

.settings-item:hover {
    background: rgba(139, 92, 246, 0.1);
}

.settings-label {
    display: flex;
    align-items: center;
    gap: 8px;
    color: #b8b4c8;
    font-size: 12px;
    cursor: pointer;
    user-select: none;
}

.settings-label input[type="checkbox"] {
    width: 16px;
    height: 16px;
    cursor: pointer;
    accent-color: #8b5cf6;
}

.settings-label span {
    flex: 1;
}

.settings-item input[type="color"] {
    width: 100%;
    height: 28px;
    border: 1px solid #3d3550;
    border-radius: 2px;
    background: #1a1625;
    cursor: pointer;
    margin-top: 6px;
}

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

.settings-item input[type="color"]::-webkit-color-swatch {
    border: none;
    border-radius: 1px;
}

.settings-item input[type="number"] {
    width: 100%;
    padding: 4px 6px;
    border: 1px solid #3d3550;
    border-radius: 2px;
    background: #1a1625;
    color: #d4d1e0;
    font-size: 11px;
    margin-top: 6px;
    outline: none;
    transition: border-color 0.15s;
}

.settings-item input[type="number"]:focus {
    border-color: #8b5cf6;
}

.snap-size-item {
    opacity: 0.5;
    pointer-events: none;
    transition: opacity 0.15s;
}

.snap-size-item.enabled {
    opacity: 1;
    pointer-events: auto;
}

.settings-input-group {
    display: flex;
    align-items: center;
    gap: 4px;
    margin-top: 6px;
}

.settings-input-group input {
    flex: 1;
}

.settings-slider-group {
    display: flex;
    align-items: center;
    gap: 6px;
    margin-top: 6px;
}

.settings-slider-group input[type="range"] {
    flex: 1;
    height: 4px;
    border-radius: 1px;
    background: #1a1625;
    outline: none;
    cursor: pointer;
    border: 1px solid #3d3550;
}

.settings-slider-group input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 12px;
    height: 12px;
    border-radius: 1px;
    background: #8b5cf6;
    cursor: pointer;
    transition: background 0.15s;
}

.settings-slider-group input[type="range"]::-webkit-slider-thumb:hover {
    background: #a78bfa;
}

.settings-slider-group input[type="range"]::-moz-range-thumb {
    width: 12px;
    height: 12px;
    border-radius: 1px;
    background: #8b5cf6;
    cursor: pointer;
    border: none;
    transition: background 0.15s;
}

.settings-slider-group input[type="range"]::-moz-range-thumb:hover {
    background: #a78bfa;
}

.settings-reset-btn {
    padding: 3px 6px;
    margin: 0;
    min-width: 24px;
    height: 24px;
}