:root {
    --primary-color: #6a2bff;
    --accent-color: #ff0055;
    --text-color: #ffffff;
    --text-muted: rgba(255, 255, 255, 0.6);
    --bg-dark: #0a0b10;
    --glass-bg: rgba(255, 255, 255, 0.05);
    --glass-border: 1px solid rgba(255, 255, 255, 0.1);
    --grid-line: rgba(255, 255, 255, 0.05);
}

* {
    padding: 0;
    margin: 0;
    box-sizing: border-box;
    font-family: 'Poppins', sans-serif;
    -webkit-tap-highlight-color: transparent;
}

body {
    background-color: var(--bg-dark);
    color: var(--text-color);
    min-height: 100vh;
    overflow-x: hidden;
}

/* Sfondo Animato */
.background-blobs {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    background: 
        radial-gradient(circle at 10% 20%, rgba(106, 43, 255, 0.15), transparent 40%),
        radial-gradient(circle at 90% 80%, rgba(255, 0, 85, 0.12), transparent 40%);
}

.app-wrapper {
    display: flex;
    min-height: 100vh;
}

/* --- SIDEBAR (TOOLS) --- */
.tools-panel {
    width: 300px;
    background: rgba(15, 16, 25, 0.85);
    backdrop-filter: blur(20px);
    border-right: var(--glass-border);
    padding: 2rem;
    display: flex;
    flex-direction: column;
    gap: 2rem;
    position: fixed;
    height: 100vh;
    overflow-y: auto;
    z-index: 100;
}

.logo-area h2 {
    font-size: 1.8rem;
    letter-spacing: 1px;
}
.logo-area span { color: var(--primary-color); }

.control-group label {
    display: block;
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-bottom: 1rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.sliders {
    display: flex;
    flex-direction: column;
    gap: 15px;
    margin-bottom: 15px;
}

.range-wrap {
    display: flex;
    align-items: center;
    gap: 10px;
}

input[type="range"] {
    width: 100%;
    accent-color: var(--primary-color);
    height: 6px;
    background: rgba(255,255,255,0.1);
    border-radius: 5px;
    appearance: none;
}

/* Tools Grid */
.tools-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
    margin-bottom: 15px;
}

.tool-btn {
    background: rgba(255,255,255,0.05);
    border: var(--glass-border);
    color: white;
    padding: 15px;
    border-radius: 12px;
    cursor: pointer;
    font-size: 1.2rem;
    transition: 0.3s;
}

.tool-btn:hover { background: rgba(255,255,255,0.1); }

.tool-btn.active {
    background: var(--primary-color);
    box-shadow: 0 0 15px rgba(106, 43, 255, 0.4);
    border-color: transparent;
}

/* Color Picker */
.color-picker-container {
    display: flex;
    align-items: center;
    gap: 10px;
    background: rgba(255,255,255,0.05);
    padding: 10px;
    border-radius: 12px;
    cursor: pointer;
}

input[type="color"] {
    -webkit-appearance: none;
    border: none;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: none;
    cursor: pointer;
}
input[type="color"]::-webkit-color-swatch-wrapper { padding: 0; }
input[type="color"]::-webkit-color-swatch {
    border: 2px solid rgba(255,255,255,0.2);
    border-radius: 8px;
}

/* Buttons */
.btn {
    width: 100%;
    padding: 12px;
    border: none;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: 0.3s;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.primary-btn {
    background: linear-gradient(135deg, var(--primary-color), #8f5aff);
    color: white;
}
.primary-btn:hover { box-shadow: 0 5px 15px rgba(106, 43, 255, 0.3); }

.danger-btn { background: rgba(255, 50, 50, 0.15); color: #ff5555; border: 1px solid rgba(255,50,50,0.2); }
.danger-btn:hover { background: rgba(255, 50, 50, 0.25); }

.success-btn { background: rgba(50, 255, 150, 0.15); color: #55ff99; border: 1px solid rgba(50, 255, 150, 0.2); }
.success-btn:hover { background: rgba(50, 255, 150, 0.25); }

.divider {
    height: 1px;
    background: rgba(255,255,255,0.1);
    margin: 0.5rem 0;
}

/* --- CANVAS AREA --- */
.canvas-area {
    margin-left: 300px; /* Width of sidebar */
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 40px;
    height: 100vh;
}

.canvas-container {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border: var(--glass-border);
    border-radius: 20px;
    padding: 20px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.3);
    overflow: auto;
    max-width: 100%;
    max-height: 100%;
    display: flex;
    justify-content: center;
}

.container {
    display: grid;
    /* Grid gap rimosso per un look pixel perfect, o minimo per guide */
    gap: 1px; 
    background-color: rgba(255,255,255,0.05); /* Colore delle linee griglia */
    border: 1px solid rgba(255,255,255,0.1);
}

.container.hide-grid {
    gap: 0; /* Rimuove lo spazio tra i pixel */
    background-color: transparent; /* Rimuove il colore delle linee di fondo */
    border: none; /* Opzionale: Rimuove il bordo esterno per un look super pulito */
}

/* Quando la griglia è nascosta, i pixel devono combaciare perfettamente */
.container.hide-grid .gridCol {
    border: none; /* Assicuriamoci che i singoli pixel non abbiano bordi */
}

.gridCol {
    width: 25px;
    height: 25px;
    background-color: transparent;
    cursor: crosshair;
}

/* --- RESPONSIVE MOBILE --- */
@media (max-width: 900px) {
    .app-wrapper { flex-direction: column; }
    
    .tools-panel {
        width: 100%;
        height: auto;
        position: relative;
        padding: 1.5rem;
        border-right: none;
        border-bottom: var(--glass-border);
    }

    .canvas-area {
        margin-left: 0;
        height: auto;
        min-height: 500px;
        padding: 20px;
    }

    .tools-grid { margin-bottom: 0; }
    .color-picker-container label { display: none; }
}