:root {
    --bg-color: #0f172a;
    --card-bg: #1e293b;
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --accent-color: #8b5cf6;
    --accent-hover: #7c3aed;
    --border-color: #334155;
}

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

body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    padding: 2rem;
}

.container {
    width: 100%;
    max-width: 1000px;
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

header {
    text-align: center;
}

header h1 {
    font-size: 2.5rem;
    background: linear-gradient(to right, #c084fc, #6366f1);
    -webkit-background-clip: text;
    color: transparent;
    margin-bottom: 0.5rem;
}

.upload-section {
    background: var(--card-bg);
    border: 2px dashed var(--border-color);
    border-radius: 1rem;
    padding: 3rem;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
}

.upload-section:hover {
    border-color: var(--accent-color);
    background: #1e293b80;
}

.upload-content svg {
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

.controls-panel {
    background: var(--card-bg);
    padding: 1.5rem;
    border-radius: 1rem;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    align-items: end;
    border: 1px solid var(--border-color);
}

.control-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

label {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

input, select {
    background: var(--bg-color);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 0.75rem;
    border-radius: 0.5rem;
    font-size: 1rem;
}

input:focus, select:focus {
    outline: none;
    border-color: var(--accent-color);
}

.actions {
    display: flex;
    gap: 1rem;
}

.btn {
    padding: 0.75rem 1.5rem;
    border-radius: 0.5rem;
    border: none;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    flex: 1;
}

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

.btn.primary:hover {
    background: var(--accent-hover);
}

.btn.secondary {
    background: var(--bg-color);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn.secondary:hover {
    background: var(--border-color);
}

.preview-section {
    background: var(--card-bg);
    padding: 1.5rem;
    border-radius: 1rem;
    border: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2rem;
}

.canvas-wrapper {
    max-width: 100%;
    overflow: auto;
    border-radius: 0.5rem;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

canvas {
    max-width: 100%;
    height: auto;
    display: block;
}

.slice-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
    gap: 1rem;
    width: 100%;
}

.slice-item {
    background: var(--bg-color);
    padding: 0.5rem;
    border-radius: 0.5rem;
    border: 1px solid var(--border-color);
}

.slice-item img {
    width: 100%;
    height: auto;
    display: block;
    border-radius: 0.25rem;
}