:root {
    --studio-bg: #0f172a;
    --studio-card: #1e293b;
    --studio-border: rgba(255, 255, 255, 0.1);
    --studio-text: #f8fafc;
    --studio-accent: #0ea5e9;
    --studio-success: #10b981;
}

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

body {
    background-color: var(--studio-bg);
    color: var(--studio-text);
    font-family: 'Inter', system-ui, sans-serif;
    display: flex;
    flex-direction: column;
    height: 100vh;
    overflow: hidden;
}

header {
    padding: 1rem 2rem;
    background: rgba(15, 23, 42, 0.8);
    border-bottom: 1px solid var(--studio-border);
    backdrop-blur: 10px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.studio-title {
    font-weight: 900;
    text-transform: uppercase;
    letter-spacing: 0.2em;
    font-size: 0.8rem;
    color: var(--studio-accent);
}

main {
    flex: 1;
    display: grid;
    grid-template-columns: 400px 1fr;
    overflow: hidden;
}

#editor-panel {
    background: var(--studio-card);
    border-right: 1px solid var(--studio-border);
    padding: 2rem;
    overflow-y: auto;
}

#preview-panel {
    padding: 2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background: radial-gradient(circle at 50% 50%, #1e293b 0%, #020617 100%);
}

.field-group {
    margin-bottom: 1.5rem;
}

label {
    display: block;
    font-size: 0.7rem;
    font-weight: 900;
    text-transform: uppercase;
    color: #64748b;
    margin-bottom: 0.5rem;
}

input[type="text"], input[type="color"] {
    width: 100%;
    padding: 0.75rem;
    background: #0f172a;
    border: 1px solid var(--studio-border);
    border-radius: 0.5rem;
    color: white;
    font-family: inherit;
}

.color-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.btn {
    padding: 0.75rem 1.5rem;
    border-radius: 0.5rem;
    font-weight: 900;
    text-transform: uppercase;
    cursor: pointer;
    border: none;
    font-family: inherit;
    transition: all 0.2s;
}

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

.preview-container {
    width: 320px;
    height: 568px;
    border: 8px solid #334155;
    border-radius: 2rem;
    overflow: hidden;
    position: relative;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
}