/* ============================================================================
   MAIN.CSS - Stili Globali Catalogo Prodotti v2.0
   ============================================================================ */

/* ----------------------------------------------------------------------------
   VARIABILI CSS (Design System)
   ---------------------------------------------------------------------------- */
:root {
    /* Colori Principali */
    --primary: #f59e0b;
    --primary-dark: #d97706;
    --secondary: #fb923c;
    --secondary-dark: #ea580c;

    /* Colori Background */
    --background: #f5f7fa;
    --surface: rgba(255, 255, 255, 0.9);

    /* Colori Testo */
    --text-primary: #2d3748;
    --text-secondary: #4a5568;
    --text-muted: #718096;

    /* Colori Stato */
    --success: #48bb78;
    --danger: #f56565;
    --warning: #ed8936;
    --info: #4299e1;

    /* Gradienti */
    --gradient-primary: linear-gradient(135deg, #1a1a1a 0%, #2d2d2d 50%, #3a3a3a 100%);
    --gradient-secondary: linear-gradient(135deg, #fb923c 0%, #ea580c 100%);
    --gradient-offcanvas: linear-gradient(135deg, #1a1a1a 0%, #3a3a3a 100%);
    --gradient-title: linear-gradient(135deg, #f5ba89 0%, #ee864e 100%);

    /* Ombre */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.15);
    --shadow-xl: 0 12px 24px rgba(0, 0, 0, 0.2);

    /* Spaziature */
    --spacing-xs: 0.25rem;  /* 4px */
    --spacing-sm: 0.5rem;   /* 8px */
    --spacing-md: 1rem;     /* 16px */
    --spacing-lg: 1.5rem;   /* 24px */
    --spacing-xl: 2rem;     /* 32px */
    --spacing-2xl: 3rem;    /* 48px */

    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-full: 9999px;

    /* Transizioni */
    --transition-fast: 150ms ease-in-out;
    --transition-normal: 300ms ease-in-out;
    --transition-slow: 500ms ease-in-out;
}

/* Tema Scuro */
[data-theme="dark"] {
    --background: #1a202c;
    --surface: rgba(45, 55, 72, 0.9);
    --text-primary: #f7fafc;
    --text-secondary: #cbd5e0;
    --text-muted: #a0aec0;
}

/* ----------------------------------------------------------------------------
   RESET & BASE
   ---------------------------------------------------------------------------- */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
                 "Helvetica Neue", Arial, sans-serif;
    color: var(--text-primary);
    background-color: var(--background);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ----------------------------------------------------------------------------
   TIPOGRAFIA
   ---------------------------------------------------------------------------- */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.75rem; }
h4 { font-size: 1.5rem; }
h5 { font-size: 1.25rem; }
h6 { font-size: 1rem; }

p {
    margin-bottom: var(--spacing-md);
}

a {
    color: var(--primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--primary-dark);
}

/* ----------------------------------------------------------------------------
   BOTTONI CUSTOM
   ---------------------------------------------------------------------------- */
.btn-gradient {
    background: var(--gradient-primary);
    color: white;
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-md);
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-md);
}

.btn-gradient:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-gradient:active {
    transform: translateY(0);
}

.btn-gradient:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

/* ----------------------------------------------------------------------------
   CARD
   ---------------------------------------------------------------------------- */
.card-custom {
    background: var(--surface);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
}

.card-custom:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}

/* ----------------------------------------------------------------------------
   BADGE
   ---------------------------------------------------------------------------- */
.badge-gradient {
    background: var(--gradient-primary);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    font-weight: 500;
    display: inline-block;
}

/* ----------------------------------------------------------------------------
   ALERT CUSTOM
   ---------------------------------------------------------------------------- */
.alert-custom {
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-md);
    border-left: 4px solid;
}

.alert-custom.success {
    background-color: #f0fdf4;
    border-color: var(--success);
    color: #166534;
}

.alert-custom.danger {
    background-color: #fef2f2;
    border-color: var(--danger);
    color: #991b1b;
}

.alert-custom.warning {
    background-color: #fffbeb;
    border-color: var(--warning);
    color: #92400e;
}

.alert-custom.info {
    background-color: #eff6ff;
    border-color: var(--info);
    color: #1e40af;
}

/* ----------------------------------------------------------------------------
   FORM ELEMENTS
   ---------------------------------------------------------------------------- */
.form-control-custom {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 2px solid #e2e8f0;
    border-radius: var(--radius-md);
    font-size: 1rem;
    transition: all var(--transition-fast);
    background-color: white;
}

.form-control-custom:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.form-label-custom {
    display: block;
    margin-bottom: var(--spacing-sm);
    font-weight: 500;
    color: var(--text-primary);
}

/* ----------------------------------------------------------------------------
   UTILITÀ
   ---------------------------------------------------------------------------- */
.text-gradient {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.page-title {
    background: var(--gradient-title);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 700;
    margin-bottom: 0;
}

.bg-gradient {
    background: var(--gradient-primary);
}

.container-custom {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

/* Spacing Utilities */
.mt-1 { margin-top: var(--spacing-xs); }
.mt-2 { margin-top: var(--spacing-sm); }
.mt-3 { margin-top: var(--spacing-md); }
.mt-4 { margin-top: var(--spacing-lg); }
.mt-5 { margin-top: var(--spacing-xl); }

.mb-1 { margin-bottom: var(--spacing-xs); }
.mb-2 { margin-bottom: var(--spacing-sm); }
.mb-3 { margin-bottom: var(--spacing-md); }
.mb-4 { margin-bottom: var(--spacing-lg); }
.mb-5 { margin-bottom: var(--spacing-xl); }

.p-1 { padding: var(--spacing-xs); }
.p-2 { padding: var(--spacing-sm); }
.p-3 { padding: var(--spacing-md); }
.p-4 { padding: var(--spacing-lg); }
.p-5 { padding: var(--spacing-xl); }

/* ----------------------------------------------------------------------------
   ANIMAZIONI
   ---------------------------------------------------------------------------- */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeIn var(--transition-normal) ease-out;
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.spinner {
    animation: spin 1s linear infinite;
}

/* ----------------------------------------------------------------------------
   RESPONSIVE
   ---------------------------------------------------------------------------- */
@media (max-width: 768px) {
    html {
        font-size: 14px;
    }

    .container-custom {
        padding: 0 var(--spacing-md);
    }
}

/* ----------------------------------------------------------------------------
   ACCESSIBILITÀ
   ---------------------------------------------------------------------------- */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

/* Focus Visible */
*:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

/* ----------------------------------------------------------------------------
   PRINT
   ---------------------------------------------------------------------------- */
@media print {
    .no-print {
        display: none !important;
    }
}