/* Tool Specific Styles */
.tool-container {
    max-width: 700px;
    margin: 0 auto;
    padding: 20px 16px;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

/* Controls */
.controls-bar {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    padding: 12px 20px;
    border-radius: var(--radius-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 15px;
}

.color-picker-group {
    display: flex;
    gap: 10px;
}

.color-btn {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    border: 2px solid transparent;
    cursor: pointer;
    transition: transform 0.2s;
}

.color-btn.active {
    border-color: var(--text-main);
    transform: scale(1.1);
    box-shadow: 0 2px 5px rgba(0,0,0,0.2);
}

.size-slider {
    display: flex;
    align-items: center;
    gap: 10px;
}

.size-slider label {
    font-size: 0.9rem;
    color: var(--text-muted);
}

/* Canvas Area */
.canvas-wrapper {
    background: #ffffff; /* Always white for paper feel */
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    position: relative;
    height: 300px;
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    cursor: crosshair;
}

canvas {
    width: 100%;
    height: 100%;
    touch-action: none; /* Prevents scrolling while drawing */
}

.placeholder-text {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 2rem;
    color: rgba(0,0,0,0.05);
    pointer-events: none;
    font-weight: 700;
    user-select: none;
}

/* Buttons */
.action-buttons {
    display: flex;
    gap: 15px;
}

.action-buttons button {
    flex: 1;
    padding: 14px;
    border-radius: 50px;
    font-weight: 600;
    cursor: pointer;
    font-size: 1rem;
    border: none;
}

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

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

.secondary-btn:hover {
    background: var(--bg-body);
}

/* Modal & Toast (Reused) */
.modal-overlay {
    position: fixed; top: 0; left: 0; width: 100%; height: 100%;
    background: rgba(0, 0, 0, 0.5); z-index: 2000;
    display: flex; align-items: center; justify-content: center;
    backdrop-filter: blur(4px); transition: all 0.3s ease;
}
.modal-overlay.hidden { opacity: 0; visibility: hidden; pointer-events: none; }
.modal-content {
    background: var(--bg-surface); width: 90%; max-width: 400px;
    padding: 24px; border-radius: var(--radius-lg); border: 1px solid var(--border-color);
}
.modal-header { display: flex; justify-content: space-between; margin-bottom: 16px; }
.modal-header h3 { font-size: 1.2rem; font-weight: 700; color: var(--text-main); }
.modal-body p { color: var(--text-muted); font-size: 0.95rem; margin-bottom: 12px; }
.icon-button { background: none; border: none; padding: 6px; cursor: pointer; color: var(--text-muted); }

.toast {
    position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%) translateY(20px);
    background-color: var(--accent-green); color: white; padding: 12px 24px;
    border-radius: 50px; font-weight: 600; font-size: 0.9rem;
    opacity: 0; visibility: hidden; transition: all 0.3s ease; z-index: 3000;
}
.toast.visible { opacity: 1; visibility: visible; transform: translateX(-50%) translateY(0); }
.hidden { display: none !important; }