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

html {
    height: 100%;
    overflow: hidden;
}

body {
    font-family: 'Roboto', sans-serif;
    background: #1a1a2e;
    color: #eee;
    height: 100%;
    overflow: hidden;
}

.app-container {
    display: grid;
    grid-template-columns: 280px 1fr 300px;
    height: 100%;
}

/* Left Panel - Tools */
.tools-panel {
    background: #16213e;
    padding: 20px;
    border-right: 1px solid #0f3460;
    overflow-y: auto;
}

.back-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: #94a3b8;
    text-decoration: none;
    font-size: 13px;
    margin-bottom: 12px;
    transition: color 0.2s;
}

.back-link:hover {
    color: #e94560;
}

.back-link .material-icons {
    font-size: 18px;
}

.panel-title {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 20px;
    color: #e94560;
}

.tool-section {
    margin-bottom: 25px;
}

.tool-section h3 {
    font-size: 14px;
    margin-bottom: 10px;
    color: #94a3b8;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.color-picker-wrapper {
    display: flex;
    align-items: center;
    gap: 10px;
}

.color-picker-wrapper input[type="color"] {
    width: 50px;
    height: 40px;
    border: none;
    border-radius: 8px;
    cursor: pointer;
}

.color-picker-wrapper input[type="text"] {
    flex: 1;
    padding: 10px;
    border: 1px solid #0f3460;
    border-radius: 8px;
    background: #1a1a2e;
    color: #eee;
    font-family: monospace;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 16px;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-size: 14px;
    transition: all 0.2s;
}

.btn-primary {
    background: #e94560;
    color: white;
}

.btn-primary:hover {
    background: #ff6b6b;
}

.btn-secondary {
    background: #0f3460;
    color: #eee;
}

.btn-secondary:hover {
    background: #1a4a7a;
}

.btn-full {
    width: 100%;
    justify-content: center;
}

input[type="file"] {
    display: none;
}

.text-input-group {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.text-input-group input,
.text-input-group select {
    padding: 10px;
    border: 1px solid #0f3460;
    border-radius: 8px;
    background: #1a1a2e;
    color: #eee;
}

/* Font preview styling for text input */
#textInput {
    font-size: 18px;
    min-height: 48px;
    transition: font-family 0.2s, font-weight 0.2s;
}

.text-controls {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.text-controls input[type="number"] {
    width: 70px;
}

/* Icon Grid */
.icon-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 5px;
    max-height: 200px;
    overflow-y: auto;
    background: #1a1a2e;
    padding: 10px;
    border-radius: 8px;
}

.icon-item {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 8px;
    cursor: pointer;
    border-radius: 4px;
    transition: background 0.2s;
}

.icon-item:hover {
    background: #0f3460;
}

.icon-item .material-icons {
    font-size: 24px;
}

/* Canvas Area */
.canvas-area {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 20px;
    background: #0f0f1a;
    overflow: auto;
}

.canvas-controls {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
    flex-wrap: wrap;
    justify-content: center;
}

.canvas-wrapper {
    position: relative;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
}

/* Alignment guide lines */
.align-guide {
    position: absolute;
    pointer-events: none;
    z-index: 9999;
}

.align-guide-h {
    left: 0;
    right: 0;
    height: 1px;
    background: rgba(0, 255, 136, 0.9);
    box-shadow: 0 0 4px rgba(0, 255, 136, 0.5);
}

.align-guide-v {
    top: 0;
    bottom: 0;
    width: 1px;
    background: rgba(0, 255, 136, 0.9);
    box-shadow: 0 0 4px rgba(0, 255, 136, 0.5);
}

/* Canvas center guides (always pink, shown during drag) */
.canvas-center-guide {
    position: absolute;
    pointer-events: none;
    z-index: 9998;
    opacity: 0;
    transition: opacity 0.15s;
}

.canvas-center-guide.visible {
    opacity: 1;
}

.canvas-center-guide-h {
    left: 0;
    right: 0;
    height: 1px;
    top: 50%;
    background: rgba(233, 69, 96, 0.4);
    border-top: 1px dashed rgba(233, 69, 96, 0.7);
}

.canvas-center-guide-v {
    top: 0;
    bottom: 0;
    width: 1px;
    left: 50%;
    background: rgba(233, 69, 96, 0.4);
    border-left: 1px dashed rgba(233, 69, 96, 0.7);
}

#canvas {
    display: block;
}

/* Draggable Elements */
.canvas-element {
    position: absolute;
    cursor: move;
    user-select: none;
}

.canvas-element.selected {
    outline: 2px dashed #e94560;
    outline-offset: 2px;
}

/* Center point indicator on selected elements */
.canvas-element.selected::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    width: 8px;
    height: 8px;
    background: #e94560;
    border: 2px solid white;
    border-radius: 50%;
    z-index: 100;
    pointer-events: none;
    box-shadow: 0 0 4px rgba(0,0,0,0.5);
}

.canvas-element .resize-handle {
    position: absolute;
    width: 12px;
    height: 12px;
    background: #e94560;
    border-radius: 50%;
    display: none;
}

.canvas-element.selected .resize-handle {
    display: block;
}

.resize-handle.se {
    right: -6px;
    bottom: -6px;
    cursor: se-resize;
}

.canvas-element img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.text-element {
    white-space: nowrap;
    padding: 5px;
    line-height: 1;
}

.icon-element {
    display: flex;
    align-items: center;
    justify-content: center;
}

.icon-element .material-icons {
    font-size: inherit;
}

/* Right Panel - Export & Tips */
.export-panel {
    background: #16213e;
    padding: 20px;
    border-left: 1px solid #0f3460;
    overflow-y: auto;
}

.device-select {
    width: 100%;
    padding: 10px;
    border: 1px solid #0f3460;
    border-radius: 8px;
    background: #1a1a2e;
    color: #eee;
    margin-bottom: 10px;
}

.orientation-toggle {
    display: flex;
    gap: 10px;
    margin-bottom: 15px;
}

.orientation-btn {
    flex: 1;
    padding: 10px;
    border: 2px solid #0f3460;
    background: transparent;
    color: #eee;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s;
}

.orientation-btn.active {
    border-color: #e94560;
    background: rgba(233, 69, 96, 0.1);
}

.export-format {
    display: flex;
    gap: 10px;
    margin-bottom: 15px;
}

.format-btn {
    flex: 1;
    padding: 10px;
    border: 2px solid #0f3460;
    background: transparent;
    color: #eee;
    border-radius: 8px;
    cursor: pointer;
}

.format-btn.active {
    border-color: #e94560;
    background: rgba(233, 69, 96, 0.1);
}

.size-display {
    background: #1a1a2e;
    padding: 15px;
    border-radius: 8px;
    text-align: center;
    margin-bottom: 15px;
}

.size-display .size {
    font-size: 24px;
    font-weight: 700;
    color: #e94560;
}

.size-display .label {
    font-size: 12px;
    color: #94a3b8;
}

.tips-section {
    margin-top: 30px;
}

.tips-section h3 {
    font-size: 14px;
    margin-bottom: 15px;
    color: #e94560;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.tip-card {
    background: #1a1a2e;
    padding: 15px;
    border-radius: 8px;
    margin-bottom: 10px;
}

.tip-card h4 {
    font-size: 14px;
    margin-bottom: 8px;
    color: #fff;
}

.tip-card p {
    font-size: 12px;
    color: #94a3b8;
    line-height: 1.5;
}

.tip-card .size-info {
    font-family: monospace;
    color: #e94560;
    font-weight: 700;
}

.quality-slider {
    width: 100%;
    margin: 10px 0;
}

.delete-btn {
    position: absolute;
    top: -10px;
    right: -10px;
    width: 24px;
    height: 24px;
    background: #e94560;
    border: none;
    border-radius: 50%;
    color: white;
    cursor: pointer;
    display: none;
    align-items: center;
    justify-content: center;
    font-size: 14px;
}

.canvas-element.selected .delete-btn {
    display: flex;
}

.icon-search {
    width: 100%;
    padding: 10px;
    border: 1px solid #0f3460;
    border-radius: 8px;
    background: #1a1a2e;
    color: #eee;
    margin-bottom: 10px;
}

.manual-override {
    background: #1a1a2e;
    padding: 12px;
    border-radius: 8px;
    margin-bottom: 15px;
}

.manual-override h4 {
    font-size: 12px;
    color: #94a3b8;
    margin-bottom: 10px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.custom-size-inputs {
    display: flex;
    gap: 8px;
    align-items: center;
}

.custom-size-inputs.active {
    display: flex;
}

.custom-size-inputs input {
    width: 80px;
    padding: 8px;
    border: 1px solid #0f3460;
    border-radius: 6px;
    background: #16213e;
    color: #eee;
    text-align: center;
}

.custom-size-inputs input:focus {
    border-color: #e94560;
    outline: none;
}

.size-separator {
    color: #94a3b8;
    font-weight: bold;
}

.custom-size-inputs .btn {
    padding: 8px 12px;
}

/* Scrollbar styling */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #1a1a2e;
}

::-webkit-scrollbar-thumb {
    background: #0f3460;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #1a4a7a;
}

/* Shape Grid */
.shape-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 8px;
}

.shape-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 12px;
    background: #1a1a2e;
    border: 2px solid #0f3460;
    border-radius: 8px;
    color: #eee;
    cursor: pointer;
    transition: all 0.2s;
}

.shape-btn:hover {
    border-color: #e94560;
    background: rgba(233, 69, 96, 0.1);
}

.shape-btn .material-icons {
    font-size: 24px;
}

/* Shape Elements */
.shape-element {
    display: flex;
    align-items: center;
    justify-content: center;
}

.shape-element svg {
    width: 100%;
    height: 100%;
}

/* Element Properties Panel */
.element-properties {
    background: #1a1a2e;
    padding: 12px;
    border-radius: 8px;
}

.property-row {
    display: none;
    flex-direction: column;
    gap: 8px;
    margin-bottom: 10px;
}

.property-row.visible {
    display: flex;
}

.property-row label {
    font-size: 12px;
    color: #94a3b8;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.opacity-control {
    display: flex;
    align-items: center;
    gap: 10px;
}

.opacity-control input[type="range"] {
    flex: 1;
    height: 6px;
    -webkit-appearance: none;
    appearance: none;
    background: #0f3460;
    border-radius: 3px;
    outline: none;
}

.opacity-control input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 16px;
    height: 16px;
    background: #e94560;
    border-radius: 50%;
    cursor: pointer;
}

.opacity-control input[type="range"]::-moz-range-thumb {
    width: 16px;
    height: 16px;
    background: #e94560;
    border-radius: 50%;
    cursor: pointer;
    border: none;
}

.opacity-control span {
    min-width: 40px;
    font-size: 12px;
    color: #eee;
    text-align: right;
}

.no-selection {
    font-size: 12px;
    color: #64748b;
    text-align: center;
    padding: 10px 0;
    margin: 0;
}

.no-selection.hidden {
    display: none;
}

/* Grid Overlay */
.grid-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    pointer-events: none;
    z-index: 9997;
    background-image:
        linear-gradient(to right, rgba(255, 255, 255, 0.1) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(255, 255, 255, 0.1) 1px, transparent 1px);
    background-size: 50px 50px;
}

/* Control divider */
.control-divider {
    width: 1px;
    height: 24px;
    background: #0f3460;
    margin: 0 5px;
    align-self: center;
}

/* Undo/Redo button states */
#undoBtn:disabled,
#redoBtn:disabled {
    cursor: not-allowed;
}

/* Grid toggle active state */
#gridBtn.active {
    background: rgba(233, 69, 96, 0.2);
    border-color: #e94560;
}

/* Contribute Section */
.contribute-section {
    margin-top: 30px;
}

.contribute-section h3 {
    font-size: 14px;
    margin-bottom: 15px;
    color: #a78bfa;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.contribute-card {
    background: linear-gradient(135deg, rgba(139, 92, 246, 0.15) 0%, rgba(167, 139, 250, 0.1) 100%);
    border: 1px solid rgba(139, 92, 246, 0.3);
    padding: 15px;
    border-radius: 8px;
}

.contribute-card p {
    font-size: 12px;
    color: #c4b5fd;
    margin-bottom: 12px;
    line-height: 1.5;
}

.contribute-links {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.contribute-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    background: rgba(139, 92, 246, 0.2);
    border: 1px solid rgba(139, 92, 246, 0.4);
    border-radius: 6px;
    color: #c4b5fd;
    text-decoration: none;
    font-size: 12px;
    transition: all 0.2s;
}

.contribute-btn:hover {
    background: rgba(139, 92, 246, 0.3);
    border-color: rgba(139, 92, 246, 0.6);
    color: #ddd6fe;
}

.contribute-btn .material-icons {
    font-size: 16px;
}