:root {
    --bg-color: #f0f2f5;
    --text-color: #333333;
    --panel-bg: rgba(255, 255, 255, 0.85);
    --panel-border: rgba(0, 0, 0, 0.1);
    --accent-color: #007bff;
    --accent-secondary: #007bff;
    /* Unified color to remove rainbow effect */
    --input-bg: rgba(255, 255, 255, 0.9);
    --font-family: 'Inter', system-ui, -apple-system, sans-serif;
}

/* Base styles for the app container */
#spirograph-app-container * {
    box-sizing: border-box;
    user-select: none;
}

#spirograph-app-container {
    --bg-color: #f0f2f5;
    --text-color: #333333;
    --panel-bg: rgba(255, 255, 255, 0.85);
    --panel-border: rgba(0, 0, 0, 0.1);
    --accent-color: #007bff;
    --accent-secondary: #007bff;

    --input-bg: rgba(255, 255, 255, 0.9);
    --font-family: 'Inter', system-ui, -apple-system, sans-serif;
    
    color: var(--text-color);
    font-family: var(--font-family);
    display: flex;
    position: relative;
    overflow: hidden;
}

/* Main Content Area */
.main-content {
    flex: 1;
    display: flex;
    overflow: hidden;
    position: sticky;
}

#spirograph-app-container canvas {
    display: block;
    width: 100%;
    /* height: 100%; */
    cursor: crosshair;
}

#spiro { height:600px; }

#controls {
    position: absolute;
    top: 10px;
    left: 12px;
    width: 260px;
    max-height: calc(100vh - 40px);
    overflow-y: auto;
    z-index: 10;
    background: var(--panel-bg);
    backdrop-filter: blur(12px);
    border: 1px solid var(--panel-border);
    border-radius: 8px;
    padding: 12px;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

#controls.minimized {
    transform: translateX(-340px);
}

.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 4px;
}

#controls h1 {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text-color);
    /* Removed gradient */
    letter-spacing: -0.5px;
	margin-top:0;
}

.wheel-group {
    margin-bottom: 8px;
    padding-bottom: 6px;
    border-bottom: 1px solid var(--panel-border);
}

.wheel-group:last-child {
    border-bottom: none;
}

.group-title {
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: #666;
    margin-bottom: 2px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.control-row {
    display: flex;
    align-items: center;
    margin-bottom: 1px;
    justify-content: space-between;
}

#spirograph-app-container label {
    font-size: 0.85rem;
    color: #555;
    width: 40%;
}

#spirograph-app-container input[type="range"] {
    width: 55%;
    accent-color: var(--accent-color);
    background: transparent;
    cursor: pointer;
}

#spirograph-app-container input[type="number"] {
    width: 60px;
    background: var(--input-bg);
    border: 1px solid var(--panel-border);
    color: var(--text-color);
    border-radius: 4px;
    padding: 2px;
    text-align: right;
}

#spirograph-app-container input[type="color"] {
    width: 100%;
    height: 20px;
    border: none;
    background: transparent;
    cursor: pointer;
}

.button-group {
    display: flex;
    gap: 10px;
    margin-top: 4px;
    justify-content: space-between;
}

#parameters button {
    flex: 1;
    padding: 6px;
    border: none;
    border-radius: 6px;
    font-weight: 600;
    cursor: pointer;
    transition: opacity 0.2s;
}

#parameters input {
	font-size:8pt;
}

.btn-primary {
    background: var(--accent-color);
    /* Solid color */
    color: white;
    font-family: var(--font-family);
    font-size: 0.85rem;
}

.btn-secondary {
    background: #eeeeee;
    color: var(--text-color);
    border: 1px solid var(--panel-border);
    font-family: var(--font-family);
    font-size: 0.95rem;
}

#spirograph-app-container button:hover {
    opacity: 0.9;
}

/* Scrollbar */
#controls::-webkit-scrollbar {
    width: 6px;
}

#controls::-webkit-scrollbar-track {
    background: transparent;
}

#controls::-webkit-scrollbar-thumb {
    background: rgba(0, 0, 0, 0.2);
    border-radius: 3px;
}

#toggle-btn {
    position: absolute;
    top: 10px;
    left: 12px;
    z-index: 11;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--panel-bg);
    border: 1px solid var(--panel-border);
    color: var(--text-color);
    font-size: 2rem;
    cursor: pointer;
    display: none;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(12px);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}