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

:root {
    --primary-color: #5e72e4;
    --secondary-color: #6c757d;
    --success-color: #2dce89;
    --danger-color: #f5365c;
    --warning-color: #fb6340;
    --info-color: #11cdef;
    --light: #f8f9fa;
    --dark: #212529;
    --white: #ffffff;
    --gray-100: #f8f9fa;
    --gray-200: #e9ecef;
    --gray-300: #dee2e6;
    --gray-400: #ced4da;
    --gray-500: #adb5bd;
    --gray-600: #6c757d;
    --gray-700: #495057;
    --gray-800: #343a40;
    --gray-900: #212529;
    --border-radius: 8px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    color: var(--gray-800);
    line-height: 1.6;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
.header {
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 100;
    border-bottom: 1px solid var(--gray-200);
}

.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 20px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

.logo svg {
    width: 32px;
    height: 32px;
}

.lang-switcher {
    display: flex;
    gap: 0.5rem;
}

.lang-btn {
    padding: 0.5rem 1rem;
    border: 1px solid var(--gray-300);
    background: var(--white);
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
    font-size: 0.875rem;
    font-weight: 500;
}

.lang-btn:hover {
    background: var(--gray-100);
    border-color: var(--primary-color);
}

.lang-btn.active {
    background: var(--primary-color);
    color: var(--white);
    border-color: var(--primary-color);
}

/* Main Layout */
.main {
    padding: 2rem 0 4rem;
}

.editor-layout {
    display: grid;
    grid-template-columns: 400px 1fr;
    gap: 2rem;
    margin-top: 2rem;
}

/* Controls Panel */
.controls-panel {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.layer-manager,
.controls,
.presets {
    background: var(--white);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.section-header h2 {
    font-size: 1.25rem;
    color: var(--gray-900);
}

.btn-add-layer {
    padding: 0.5rem 1rem;
    background: var(--primary-color);
    color: var(--white);
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    font-size: 0.875rem;
    font-weight: 500;
    transition: var(--transition);
}

.btn-add-layer:hover {
    background: #4c63d2;
    transform: translateY(-1px);
}

/* Layers List */
.layers-list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.layer-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem;
    background: var(--gray-100);
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
    border: 2px solid transparent;
}

.layer-item:hover {
    background: var(--gray-200);
}

.layer-item.active {
    background: var(--white);
    border-color: var(--primary-color);
    box-shadow: 0 2px 8px rgba(94, 114, 228, 0.2);
}

.layer-toggle {
    width: 20px;
    height: 20px;
    cursor: pointer;
}

.layer-name {
    flex: 1;
    font-weight: 500;
    color: var(--gray-700);
}

.btn-delete-layer {
    padding: 0.25rem 0.5rem;
    background: var(--danger-color);
    color: var(--white);
    border: none;
    border-radius: 4px;
    font-size: 0.75rem;
    cursor: pointer;
    opacity: 0;
    transition: var(--transition);
}

.layer-item:hover .btn-delete-layer {
    opacity: 1;
}

.btn-delete-layer:hover {
    background: #ec0c38;
}

/* Controls */
.controls h3,
.presets h3 {
    font-size: 1.125rem;
    color: var(--gray-900);
    margin-bottom: 1.25rem;
}

.control-group {
    margin-bottom: 1.25rem;
}

.control-group label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--gray-700);
    margin-bottom: 0.5rem;
}

.control-input {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.control-input input[type="range"] {
    flex: 1;
    height: 6px;
    background: var(--gray-300);
    border-radius: 3px;
    outline: none;
    -webkit-appearance: none;
}

.control-input input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 18px;
    height: 18px;
    background: var(--primary-color);
    cursor: pointer;
    border-radius: 50%;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
    transition: var(--transition);
}

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

.control-input input[type="number"] {
    width: 60px;
    padding: 0.375rem 0.5rem;
    border: 1px solid var(--gray-300);
    border-radius: 4px;
    font-size: 0.875rem;
    text-align: center;
}

.control-input span {
    font-size: 0.875rem;
    color: var(--gray-600);
}

.color-input {
    gap: 0.5rem;
}

.color-input input[type="color"] {
    width: 50px;
    height: 36px;
    border: 1px solid var(--gray-300);
    border-radius: 4px;
    cursor: pointer;
}

.color-input input[type="text"] {
    flex: 1;
    padding: 0.375rem 0.75rem;
    border: 1px solid var(--gray-300);
    border-radius: 4px;
    font-size: 0.875rem;
    font-family: 'Monaco', 'Menlo', monospace;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    font-size: 0.875rem;
    color: var(--gray-700);
}

.checkbox-label input[type="checkbox"] {
    width: 20px;
    height: 20px;
    cursor: pointer;
}

/* Presets */
.preset-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.5rem;
}

.preset-btn {
    padding: 0.75rem;
    background: var(--gray-100);
    border: 1px solid var(--gray-300);
    border-radius: var(--border-radius);
    cursor: pointer;
    font-size: 0.875rem;
    font-weight: 500;
    transition: var(--transition);
}

.preset-btn:hover {
    background: var(--primary-color);
    color: var(--white);
    border-color: var(--primary-color);
    transform: translateY(-2px);
}

/* Preview Panel */
.preview-panel {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.preview-container {
    background: var(--white);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
}

.preview-options {
    display: flex;
    gap: 1rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--gray-200);
    margin-bottom: 2rem;
}

.option-group {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.option-group label {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--gray-700);
}

.option-group input[type="color"] {
    width: 36px;
    height: 36px;
    border: 1px solid var(--gray-300);
    border-radius: 4px;
    cursor: pointer;
}

.option-group select {
    padding: 0.375rem 0.75rem;
    border: 1px solid var(--gray-300);
    border-radius: 4px;
    font-size: 0.875rem;
    background: var(--white);
    cursor: pointer;
}

.preview-area {
    min-height: 400px;
    background: #f0f0f0;
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.preview-box {
    width: 200px;
    height: 200px;
    background: var(--white);
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    color: var(--gray-600);
    transition: var(--transition);
}

/* Code Output */
.code-output {
    background: var(--white);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
}

.code-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.code-header h3 {
    font-size: 1.125rem;
    color: var(--gray-900);
}

.btn-copy {
    padding: 0.5rem 1.25rem;
    background: var(--success-color);
    color: var(--white);
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    font-size: 0.875rem;
    font-weight: 500;
    transition: var(--transition);
}

.btn-copy:hover {
    background: #26af74;
    transform: translateY(-1px);
}

.btn-copy.copied {
    background: var(--info-color);
}

.code-block {
    background: var(--gray-900);
    color: #e6e6e6;
    padding: 1.25rem;
    border-radius: var(--border-radius);
    overflow-x: auto;
    font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
    font-size: 0.875rem;
    line-height: 1.6;
}

/* Footer */
.footer {
    background: rgba(255, 255, 255, 0.98);
    border-top: 1px solid var(--gray-200);
    padding: 2rem 0;
    text-align: center;
    margin-top: 4rem;
}

.footer p {
    color: var(--gray-600);
    font-size: 0.875rem;
}

/* Responsive */
@media (max-width: 1024px) {
    .editor-layout {
        grid-template-columns: 1fr;
    }

    .controls-panel {
        order: 2;
    }

    .preview-panel {
        order: 1;
    }
}

@media (max-width: 640px) {
    .header .container {
        flex-direction: column;
        gap: 1rem;
    }

    .preset-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .preview-options {
        flex-direction: column;
    }

    .control-input input[type="range"] {
        min-width: 100px;
    }
}