/* ============================================
   ChemicalsWeb - Stile Pubblica Amministrazione
   Basato sulle linee guida Design Italia/AgID
   ============================================ */

/* Variabili CSS - Palette PA */
:root {
    /* Colori primari PA */
    --pa-primary: #0066cc;
    --pa-primary-dark: #004d99;
    --pa-primary-light: #3385d6;
    --pa-secondary: #17324d;
    --pa-secondary-light: #2e4a62;
    
    /* Colori di stato */
    --pa-success: #008758;
    --pa-warning: #a66300;
    --pa-danger: #d9364f;
    --pa-info: #0066cc;
    
    /* Colori neutri */
    --pa-gray-100: #f5f6f7;
    --pa-gray-200: #e6e9ec;
    --pa-gray-300: #d4d7dc;
    --pa-gray-500: #9da2a6;
    --pa-gray-700: #5a6772;
    --pa-gray-900: #17324d;
    
    /* Colori funzionali */
    --pa-white: #ffffff;
    --pa-black: #000000;
    --pa-body-bg: #f5f6f7;
    --pa-card-bg: #ffffff;
    
    /* Tipografia */
    --pa-font-family: 'Titillium Web', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --pa-font-size-base: 1rem;
    --pa-line-height-base: 1.5;
    
    /* Spaziature */
    --pa-spacing-xs: 0.25rem;
    --pa-spacing-sm: 0.5rem;
    --pa-spacing-md: 1rem;
    --pa-spacing-lg: 1.5rem;
    --pa-spacing-xl: 2rem;
    --pa-spacing-xxl: 3rem;
    
    /* Border radius */
    --pa-radius-sm: 4px;
    --pa-radius-md: 8px;
    --pa-radius-lg: 12px;
    
    /* Shadows */
    --pa-shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
    --pa-shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --pa-shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.15);
    
    /* Transitions */
    --pa-transition: all 0.3s ease;
}

/* Reset e Base */
* {
    box-sizing: border-box;
}

.pa-body {
    font-family: var(--pa-font-family);
    font-size: var(--pa-font-size-base);
    line-height: var(--pa-line-height-base);
    color: var(--pa-gray-900);
    background-color: var(--pa-body-bg);
    margin: 0;
    padding: 0;
}

/* Hero Section */
.pa-hero {
    background: linear-gradient(135deg, var(--pa-secondary) 0%, var(--pa-primary-dark) 100%);
    color: var(--pa-white);
    padding: var(--pa-spacing-xxl) 0;
    position: relative;
    overflow: hidden;
}

.pa-hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><circle cx="50" cy="50" r="40" fill="none" stroke="rgba(255,255,255,0.05)" stroke-width="1"/></svg>');
    background-size: 200px;
    opacity: 0.5;
}

.pa-hero-content {
    position: relative;
    z-index: 1;
}

.pa-hero-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: var(--pa-spacing-md);
    line-height: 1.2;
}

.pa-hero-subtitle {
    font-size: 1.125rem;
    opacity: 0.9;
    margin-bottom: var(--pa-spacing-xl);
    line-height: 1.6;
}

.pa-hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: var(--pa-spacing-md);
}

/* Buttons */
.pa-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    border-radius: var(--pa-radius-sm);
    transition: var(--pa-transition);
    border: 2px solid transparent;
    cursor: pointer;
}

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

.pa-btn-primary:hover {
    background-color: var(--pa-gray-100);
    color: var(--pa-primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--pa-shadow-md);
}

.pa-btn-outline {
    background-color: transparent;
    color: var(--pa-white);
    border-color: var(--pa-white);
}

.pa-btn-outline:hover {
    background-color: var(--pa-white);
    color: var(--pa-primary);
}

/* Carousel Wrapper */
.pa-carousel-wrapper {
    border-radius: var(--pa-radius-lg);
    overflow: hidden;
    box-shadow: var(--pa-shadow-lg);
}

.pa-carousel-wrapper .carousel-inner img {
    height: 300px;
    object-fit: cover;
}

.pa-carousel-wrapper .carousel-control-prev,
.pa-carousel-wrapper .carousel-control-next {
    width: 40px;
    height: 40px;
    background-color: rgba(0, 0, 0, 0.5);
    border-radius: 50%;
    top: 50%;
    transform: translateY(-50%);
    opacity: 1;
}

.pa-carousel-wrapper .carousel-control-prev {
    left: 10px;
}

.pa-carousel-wrapper .carousel-control-next {
    right: 10px;
}

/* Sections */
.pa-section {
    padding: var(--pa-spacing-xxl) 0;
}

.pa-section-light {
    background-color: var(--pa-white);
}

.pa-section-alt {
    background-color: var(--pa-gray-100);
}

.pa-section-services {
    background: linear-gradient(180deg, var(--pa-gray-100) 0%, var(--pa-white) 100%);
}

.pa-section-header {
    display: flex;
    align-items: center;
    margin-bottom: var(--pa-spacing-xl);
}

.pa-section-header.text-center {
    flex-direction: column;
}

.pa-section-icon {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--pa-primary) 0%, var(--pa-primary-dark) 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: var(--pa-spacing-md);
    color: var(--pa-white);
    font-size: 1.25rem;
}

.pa-section-header.text-center .pa-section-icon {
    margin-right: 0;
    margin-bottom: var(--pa-spacing-md);
}

.pa-section-title {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--pa-secondary);
    margin: 0;
}

.pa-section-subtitle {
    color: var(--pa-gray-700);
    font-size: 1.125rem;
    margin-top: var(--pa-spacing-sm);
}

/* Cards */
.pa-card {
    background-color: var(--pa-card-bg);
    border-radius: var(--pa-radius-md);
    box-shadow: var(--pa-shadow-sm);
    border: 1px solid var(--pa-gray-200);
    overflow: hidden;
    transition: var(--pa-transition);
}

.pa-card:hover {
    box-shadow: var(--pa-shadow-md);
}

.pa-card-highlight {
    border-left: 4px solid var(--pa-primary);
}

.pa-card-body {
    padding: var(--pa-spacing-lg);
}

/* Service Cards */
.pa-service-card {
    background-color: var(--pa-card-bg);
    border-radius: var(--pa-radius-md);
    box-shadow: var(--pa-shadow-sm);
    overflow: hidden;
    transition: var(--pa-transition);
    height: 100%;
    display: flex;
    flex-direction: column;
}

.pa-service-card:hover {
    box-shadow: var(--pa-shadow-lg);
    transform: translateY(-4px);
}

.pa-service-header {
    padding: var(--pa-spacing-lg);
    color: var(--pa-white);
    text-align: center;
}

.pa-service-cittadino {
    background: linear-gradient(135deg, #0066cc 0%, #004d99 100%);
}

.pa-service-operatore {
    background: linear-gradient(135deg, #008758 0%, #006644 100%);
}

.pa-service-contatti {
    background: linear-gradient(135deg, #17324d 0%, #0d1f30 100%);
}

.pa-service-icon {
    width: 64px;
    height: 64px;
    background-color: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--pa-spacing-md);
    font-size: 1.5rem;
}

.pa-service-title {
    font-size: 1.125rem;
    font-weight: 700;
    margin: 0;
}

.pa-service-body {
    padding: 0;
    flex: 1;
}

.pa-service-list {
    list-style: none;
    margin: 0;
    padding: 0;
}

.pa-service-list li {
    border-bottom: 1px solid var(--pa-gray-200);
}

.pa-service-list li:last-child {
    border-bottom: none;
}

.pa-service-link {
    display: flex;
    align-items: center;
    padding: var(--pa-spacing-md) var(--pa-spacing-lg);
    color: var(--pa-gray-900);
    text-decoration: none;
    transition: var(--pa-transition);
}

.pa-service-link:hover {
    background-color: var(--pa-gray-100);
    color: var(--pa-primary);
}

.pa-service-link-icon {
    width: 32px;
    height: 32px;
    background-color: var(--pa-gray-100);
    border-radius: var(--pa-radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: var(--pa-spacing-md);
    color: var(--pa-primary);
    flex-shrink: 0;
}

.pa-service-link:hover .pa-service-link-icon {
    background-color: var(--pa-primary);
    color: var(--pa-white);
}

.pa-service-link-text {
    flex: 1;
    font-weight: 500;
}

.pa-service-link-arrow {
    color: var(--pa-gray-500);
    font-size: 0.875rem;
}

.pa-service-link:hover .pa-service-link-arrow {
    color: var(--pa-primary);
    transform: translateX(4px);
}

/* Objectives Section - Simple Version */
.pa-objectives-simple {
    max-width: 900px;
    margin: 0 auto;
    text-align: center;
}

.pa-objectives-intro {
    font-size: 1rem;
    color: var(--pa-gray-700);
    margin-bottom: var(--pa-spacing-md);
}

.pa-objectives-inline {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--pa-spacing-sm);
}

.pa-objectives-inline li {
    font-size: 0.875rem;
    color: var(--pa-gray-700);
    padding: var(--pa-spacing-xs) var(--pa-spacing-md);
    background-color: var(--pa-gray-100);
    border-radius: 20px;
    border: 1px solid var(--pa-gray-200);
}

/* Objectives Section - Full Version (legacy) */
.pa-lead-text {
    font-size: 1.125rem;
    color: var(--pa-gray-700);
    margin-bottom: var(--pa-spacing-lg);
    line-height: 1.6;
}

.pa-objectives-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: var(--pa-spacing-lg);
}

.pa-objectives-list li {
    display: flex;
    align-items: flex-start;
    gap: var(--pa-spacing-md);
    padding: var(--pa-spacing-md);
    background-color: var(--pa-gray-100);
    border-radius: var(--pa-radius-md);
    border-left: 4px solid var(--pa-primary);
    transition: var(--pa-transition);
}

.pa-objectives-list li:hover {
    background-color: var(--pa-white);
    box-shadow: var(--pa-shadow-md);
    transform: translateX(4px);
}

.pa-objective-icon {
    width: 48px;
    height: 48px;
    min-width: 48px;
    background: linear-gradient(135deg, var(--pa-primary) 0%, var(--pa-primary-dark) 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--pa-white);
    font-size: 1.25rem;
}

.pa-objective-content {
    flex: 1;
    font-size: 1rem;
    line-height: 1.6;
    color: var(--pa-gray-900);
}

.pa-objective-content strong {
    color: var(--pa-primary-dark);
}

/* Legacy Styles - Mantenuti per compatibilità */
#skills-section {
    text-align: center;
    margin-top: 50px;
}

.sin {
    width: 18%;
    display: inline-block;
    margin: 2%;
    color: var(--pa-secondary);
    vertical-align: top;
    text-align: left;
}

.cen {
    width: 50%;
    display: inline-block;
    margin: 2%;
    color: var(--pa-secondary);
}

.des {
    width: 18%;
    display: inline-block;
    margin: 2%;
    color: var(--pa-secondary);
    vertical-align: top;
    text-align: right;
}

/* Card header override per compatibilità esistente */
.ph-card-header {
    background: linear-gradient(135deg, var(--pa-primary) 0%, var(--pa-primary-dark) 100%);
    color: var(--pa-white);
    font-weight: 600;
    padding: var(--pa-spacing-md) var(--pa-spacing-lg);
    border: none;
}

/* Responsive */
@media (max-width: 991.98px) {
    .pa-hero {
        padding: var(--pa-spacing-xl) 0;
        text-align: center;
    }
    
    .pa-hero-title {
        font-size: 2rem;
    }
    
    .pa-hero-actions {
        justify-content: center;
    }
    
    .pa-carousel-wrapper {
        margin-top: var(--pa-spacing-xl);
    }
    
    .pa-carousel-wrapper .carousel-inner img {
        height: 250px;
    }
}

@media (max-width: 767.98px) {
    .pa-hero-title {
        font-size: 1.75rem;
    }
    
    .pa-hero-subtitle {
        font-size: 1rem;
    }
    
    .pa-hero-actions {
        flex-direction: column;
    }
    
    .pa-btn {
        width: 100%;
    }
    
    .pa-section {
        padding: var(--pa-spacing-xl) 0;
    }
    
    .pa-section-title {
        font-size: 1.5rem;
    }
    
    .pa-service-card {
        margin-bottom: var(--pa-spacing-md);
    }
}

/* Accessibilità */
.pa-btn:focus,
.pa-service-link:focus {
    outline: 3px solid var(--pa-primary-light);
    outline-offset: 2px;
}

/* Skip link per accessibilità */
.pa-skip-link {
    position: absolute;
    top: -100%;
    left: 0;
    background: var(--pa-primary);
    color: var(--pa-white);
    padding: var(--pa-spacing-md);
    z-index: 1000;
    transition: top 0.3s;
}

.pa-skip-link:focus {
    top: 0;
}

/* Print styles */
@media print {
    .pa-hero {
        background: none;
        color: var(--pa-black);
        padding: var(--pa-spacing-md) 0;
    }
    
    .pa-btn {
        border: 1px solid var(--pa-black);
    }
    
    .pa-service-card {
        break-inside: avoid;
    }
}