/* ============================================
   DESIGN SYSTEM MODERNO CON GLASSMORPHISM
   ============================================ */

:root {
    /* ===== COLORS ===== */
    --color-primary: #002D94;
    --color-primary-light: #1a4db8;
    --color-primary-dark: #001f6b;
    --color-primary-lighter: #4d6bc4;
    
    /* Gradienti */
    --gradient-primary: linear-gradient(135deg, #002D94 0%, #1a4db8 50%, #4d6bc4 100%);
    --gradient-primary-hover: linear-gradient(135deg, #1a4db8 0%, #4d6bc4 50%, #6b85d0 100%);
    --gradient-card: linear-gradient(135deg, rgba(255,255,255,0.1) 0%, rgba(255,255,255,0.05) 100%);
    --gradient-sidebar: linear-gradient(180deg, #002D94 0%, #001f6b 100%);
    
    /* Colori semantici */
    --color-success: #26b050;
    --color-warning: #ffa500;
    --color-error: #dc3545;
    --color-info: #17a2b8;
    
    /* Colori neutri */
    --color-white: #ffffff;
    --color-gray-50: #f8f9fa;
    --color-gray-100: #f1f3f5;
    --color-gray-200: #e9ecef;
    --color-gray-300: #dee2e6;
    --color-gray-400: #ced4da;
    --color-gray-500: #adb5bd;
    --color-gray-600: #868e96;
    --color-gray-700: #495057;
    --color-gray-800: #343a40;
    --color-gray-900: #212529;
    
    /* ===== SHADOWS ===== */
    --shadow-xs: 0 1px 2px rgba(0, 45, 148, 0.05);
    --shadow-sm: 0 2px 4px rgba(0, 45, 148, 0.1);
    --shadow-md: 0 4px 12px rgba(0, 45, 148, 0.15);
    --shadow-lg: 0 8px 24px rgba(0, 45, 148, 0.2);
    --shadow-xl: 0 12px 48px rgba(0, 45, 148, 0.25);
    --shadow-glass: 0 8px 32px rgba(0, 45, 148, 0.1);
    
    /* ===== SPACING ===== */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-2xl: 48px;
    --spacing-3xl: 64px;
    
    /* ===== BORDER RADIUS ===== */
    --radius-xs: 4px;
    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-2xl: 24px;
    --radius-full: 9999px;
    
    /* ===== TRANSITIONS ===== */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 350ms ease;
    --transition-bounce: 400ms cubic-bezier(0.68, -0.55, 0.265, 1.55);
    
    /* ===== GLASSMORPHISM ===== */
    --glass-bg: rgba(255, 255, 255, 0.95);
    --glass-bg-dark: rgba(0, 45, 148, 0.95);
    --glass-border: rgba(255, 255, 255, 0.2);
    --glass-blur: blur(10px);
    --glass-blur-lg: blur(20px);

    /* ===== SIDEBAR ===== */
    --sidebar-width-expanded: 260px;
    --sidebar-width-collapsed: 72px;
    --sidebar-transition: width var(--transition-base), min-width var(--transition-base);
    --topbar-height: 50px;
    --nav-icon-size: 20px;
}

/* Sidebar navigation icons — global guard against Bootstrap img { max-width: 100% } */
.nav-sidebar img.nav-menu-link__icon,
.nav-sidebar .nav-menu-link__icon {
    width: var(--nav-icon-size) !important;
    height: var(--nav-icon-size) !important;
    max-width: var(--nav-icon-size) !important;
    max-height: var(--nav-icon-size) !important;
    object-fit: contain;
    flex-shrink: 0;
}

.nav-sidebar .nav-sidebar__logo {
    width: 36px !important;
    height: 36px !important;
    max-width: 36px !important;
    max-height: 36px !important;
    object-fit: contain;
}

.nav-sidebar .nav-sidebar__search-icon {
    width: 16px !important;
    height: 16px !important;
    max-width: 16px !important;
    max-height: 16px !important;
}

.nav-sidebar a.nav-menu-link,
.nav-sidebar .nav-menu-section__toggle {
    text-decoration: none !important;
}

/* ===== GLASSMORPHISM UTILITIES ===== */
.glass {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
    box-shadow: var(--shadow-glass);
}

.glass-dark {
    background: var(--glass-bg-dark);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: var(--shadow-glass);
}

.glass-lg {
    backdrop-filter: var(--glass-blur-lg);
    -webkit-backdrop-filter: var(--glass-blur-lg);
}

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

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.7;
    }
}

@keyframes ripple {
    0% {
        transform: scale(0);
        opacity: 1;
    }
    100% {
        transform: scale(4);
        opacity: 0;
    }
}

@keyframes shimmer {
    0% {
        background-position: -1000px 0;
    }
    100% {
        background-position: 1000px 0;
    }
}

/* ===== UTILITY CLASSES ===== */
.animate-fade-in {
    animation: fadeIn var(--transition-base);
}

.animate-slide-in-left {
    animation: slideInLeft var(--transition-base);
}

.animate-slide-in-right {
    animation: slideInRight var(--transition-base);
}

.animate-pulse {
    animation: pulse 2s ease-in-out infinite;
}

/* ===== MODERN CARD ===== */
.card-modern {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
    border: 1px solid var(--color-gray-200);
}

.card-modern:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-primary-light);
}

.card-glass {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    border: 1px solid var(--glass-border);
    box-shadow: var(--shadow-glass);
    transition: all var(--transition-base);
}

.card-glass:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl);
    background: rgba(255, 255, 255, 0.98);
}

/* ===== MODERN BUTTON ===== */
.btn-modern {
    background: var(--gradient-primary);
    border: none;
    border-radius: var(--radius-md);
    padding: 12px 24px;
    color: var(--color-white);
    font-weight: 600;
    font-family: POPPINS-REGULAR;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.btn-modern::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn-modern:hover {
    background: var(--gradient-primary-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-modern:active::before {
    width: 300px;
    height: 300px;
}

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

/* ===== MODERN INPUT ===== */
.input-modern {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--color-gray-300);
    border-radius: var(--radius-md);
    font-family: POPPINS-REGULAR;
    font-size: 16px;
    transition: all var(--transition-base);
    background: var(--color-white);
}

.input-modern:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(0, 45, 148, 0.1);
}

.input-modern::placeholder {
    color: var(--color-gray-500);
}

/* ===== BADGE ===== */
.badge-modern {
    display: inline-flex;
    align-items: center;
    padding: 4px 12px;
    border-radius: var(--radius-full);
    font-size: 12px;
    font-weight: 600;
    font-family: POPPINS-REGULAR;
}

.badge-primary {
    background: var(--gradient-primary);
    color: var(--color-white);
}

.badge-success {
    background: var(--color-success);
    color: var(--color-white);
}

.badge-warning {
    background: var(--color-warning);
    color: var(--color-white);
}

.badge-error {
    background: var(--color-error);
    color: var(--color-white);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
    :root {
        --spacing-lg: 16px;
        --spacing-xl: 24px;
    }
    
    .card-modern,
    .card-glass {
        padding: var(--spacing-md);
    }
}