:root {
    --bg-primary: #f7fafc;
    --bg-secondary: #ffffff;
    --text-primary: #1a202c;
    --text-secondary: #4a5568;
    --border-color: #e2e8f0;
    --shadow-light: rgba(0, 0, 0, 0.1);
}

:root.dark {
    --bg-primary: #1a202c;
    --bg-secondary: #2d3748;
    --text-primary: #f7fafc;
    --text-secondary: #cbd5e0;
    --border-color: #4a5568;
    --shadow-light: rgba(0, 0, 0, 0.3);
}

.hidden {
    display: none;
}

/* Theme toggle button */
.theme-toggle {
    position: fixed;
    top: 20px;
    right: 20px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 8px 12px;
    border-radius: 6px;
    cursor: pointer;
    box-shadow: 0 2px 4px var(--shadow-light);
    z-index: 1000;
    transition: all 0.2s ease;
}

.theme-toggle:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 8px var(--shadow-light);
}

/* Dark theme overrides for Tailwind classes - Compatible with Tailwind 3.x */
.dark body {
    background-color: var(--bg-primary) !important;
    color: var(--text-primary) !important;
}

.dark .bg-gray-100 {
    background-color: var(--bg-primary) !important;
}

.dark .bg-white {
    background-color: var(--bg-secondary) !important;
    color: var(--text-primary) !important;
}

.dark .text-gray-700 {
    color: var(--text-secondary) !important;
}

.dark .text-gray-500 {
    color: var(--text-secondary) !important;
}

.dark .border {
    border-color: var(--border-color) !important;
}

.dark .shadow-md,
.dark .shadow-lg {
    box-shadow: 0 4px 6px var(--shadow-light) !important;
}

.dark input,
.dark select,
.dark textarea {
    background-color: var(--bg-primary) !important;
    color: var(--text-primary) !important;
    border-color: var(--border-color) !important;
}

.dark input::placeholder {
    color: var(--text-secondary) !important;
}

.dark .bg-gray-600 {
    background-color: rgba(26, 32, 44, 0.9) !important;
}


.qr-code-container {
    text-align: center;
    margin: 20px 0;
}

#qr-code {
    max-width: 300px;
    height: auto;
}

@media print {
    @page {
        margin: 0;
        size: A4;
    }

    body {
        margin: 0;
        padding: 0;
        background: white;
    }

    body > * {
        display: none !important;
    }

    .qr-code-container.printing {
        display: block !important;
        position: absolute !important;
        top: 50% !important;
        left: 50% !important;
        transform: translate(-50%, -50%) !important;
        background: none !important;
        border: none !important;
        box-shadow: none !important;
        margin: 0 !important;
        padding: 0 !important;
    }

    .qr-code-container.printing img {
        display: block !important;
        width: 200px !important;
        height: 200px !important;
        background: none !important;
        border: none !important;
        box-shadow: none !important;
        margin: 0 !important;
        padding: 0 !important;
    }
}

/* Stile per centrare il QR code nella pagina */
#qr-code-display {
    text-align: center;
}