/* =====================================================
   INSTITUTIONAL SECTION STYLES
   Modern design per sezione istituzionale CRBL
   ===================================================== */

/* === BASE & TYPOGRAPHY === */
:root {
    --primary-color: #0066cc;
    --secondary-color: #00a8e8;
    --dark-color: #1a1a1a;
    --light-color: #f8f9fa;
    --text-color: #333;
    --border-radius: 0.5rem;
    --transition: all 0.3s ease;
}

body {
    font-family: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    color: var(--text-color);
    overflow-x: hidden;
}

/* === NAVIGATION === */
.navbar {
    transition: var(--transition);
    padding: 1rem 0;
    z-index: 1030;
}

.navbar.scrolled {
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.navbar-brand img {
    transition: var(--transition);
}

.navbar-nav .nav-link {
    padding: 0.5rem 1rem;
    font-weight: 500;
    color: var(--text-color);
    transition: var(--transition);
    position: relative;
}

.navbar-nav .nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: var(--transition);
    transform: translateX(-50%);
}

.navbar-nav .nav-link:hover::after,
.navbar-nav .nav-link.active::after {
    width: 80%;
}

.navbar-nav .nav-link:hover {
    color: var(--primary-color);
}

.navbar-nav .btn {
    padding: 0.5rem 1.5rem;
    border-radius: 50px;
}

/* Navbar toggler - garantisce visibilita su mobile */
.navbar-toggler {
    border: 1px solid rgba(0, 0, 0, 0.2);
    padding: 0.35rem 0.55rem;
}

.navbar-toggler:focus {
    box-shadow: 0 0 0 0.2rem rgba(0, 102, 204, 0.2);
}

.navbar-toggler-icon {
    width: 1.25em;
    height: 1.25em;
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(0,0,0,0.75)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}

/* === MAIN CONTENT === */
.main-content {
    padding-top: 76px; /* Navbar height */
    min-height: calc(100vh - 400px);
}

/* === HERO SECTION === */
.hero-section {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    overflow: hidden;
}

.hero-video-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    z-index: 1;
}

.hero-video-background iframe {
    position: absolute;
    top: 50%;
    left: 50%;
    min-width: 100%;
    min-height: 100%;
    width: auto;
    height: auto;
    transform: translate(-50%, -50%);
    pointer-events: none;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(0, 102, 204, 0.7) 0%, rgba(0, 168, 232, 0.6) 100%);
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
    color: white;
    padding: 2rem 0;
}

.hero-title {
    font-size: 4rem;
    font-weight: 700;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
    animation: fadeInUp 1s ease;
}

.hero-subtitle {
    font-size: 1.5rem;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.3);
    animation: fadeInUp 1s ease 0.2s;
    animation-fill-mode: both;
}

.hero-scroll-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 3;
    animation: bounce 2s infinite;
}

.hero-scroll-indicator i {
    font-size: 2rem;
    color: white;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateX(-50%) translateY(0);
    }
    40% {
        transform: translateX(-50%) translateY(-10px);
    }
    60% {
        transform: translateX(-50%) translateY(-5px);
    }
}

/* === PAGE HEADER === */
.page-header {
    padding: 4rem 0 3rem;
    margin-top: 76px;
}

.page-header h1 {
    margin-bottom: 1rem;
}

/* === ACTIVITY CARDS === */
.activity-card {
    border: none;
    transition: var(--transition);
    border-radius: var(--border-radius);
}

.activity-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
}

.activity-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: rgba(0, 102, 204, 0.1);
}

/* === NEWS CARDS === */
.news-card {
    border: none;
    transition: var(--transition);
    border-radius: var(--border-radius);
    overflow: hidden;
}

.news-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
}

.news-card .card-img-top {
    height: 200px;
    object-fit: cover;
    transition: var(--transition);
}

.news-card:hover .card-img-top {
    transform: scale(1.05);
}

.news-item-card {
    border: none;
    transition: var(--transition);
    border-radius: var(--border-radius);
    overflow: hidden;
}

.news-item-card:hover {
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
}

/* === FOOTER === */
.footer {
    margin-top: 5rem;
}

.footer a:hover {
    color: var(--secondary-color) !important;
    transition: var(--transition);
}

.social-links a {
    transition: var(--transition);
}

.social-links a:hover {
    transform: translateY(-3px);
}

/* === BUTTONS === */
.btn {
    border-radius: 50px;
    padding: 0.75rem 2rem;
    font-weight: 500;
    transition: var(--transition);
}

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

.btn-primary:hover {
    background: #0052a3;
    border-color: #0052a3;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 102, 204, 0.3);
}

.btn-outline-primary {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.btn-outline-primary:hover {
    background: var(--primary-color);
    border-color: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 102, 204, 0.3);
}

.btn-lg {
    padding: 1rem 2.5rem;
    font-size: 1.1rem;
}

/* === FORMS === */
.form-control,
.form-select {
    border-radius: var(--border-radius);
    padding: 0.75rem 1rem;
    border: 2px solid #e0e0e0;
    transition: var(--transition);
}

.form-control:focus,
.form-select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(0, 102, 204, 0.25);
}

/* === CARDS === */
.card {
    border: none;
    border-radius: var(--border-radius);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.08);
    transition: var(--transition);
}

.card:hover {
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.15);
}

/* === BADGES === */
.badge {
    padding: 0.5rem 1rem;
    border-radius: 50px;
    font-weight: 500;
}

/* === CONTACT INFO === */
.contact-info a {
    transition: var(--transition);
}

.contact-info a:hover {
    color: var(--primary-color) !important;
}

/* === ACCORDION === */
.accordion-item {
    border: none;
    margin-bottom: 1rem;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.05);
}

.accordion-button {
    font-weight: 600;
    color: var(--text-color);
    background-color: white;
}

.accordion-button:not(.collapsed) {
    background-color: var(--light-color);
    color: var(--primary-color);
}

.accordion-button:focus {
    box-shadow: none;
    border-color: var(--primary-color);
}

/* === PAGINATION === */
.pagination .page-link {
    color: var(--primary-color);
    border-radius: 50px;
    margin: 0 0.25rem;
    border: 2px solid #e0e0e0;
    transition: var(--transition);
}

.pagination .page-link:hover {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    color: white;
    transform: translateY(-2px);
}

.pagination .page-item.active .page-link {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

/* === BREADCRUMB === */
.breadcrumb {
    background: transparent;
    padding: 1rem 0;
}

.breadcrumb-item a {
    color: var(--primary-color);
    text-decoration: none;
    transition: var(--transition);
}

.breadcrumb-item a:hover {
    color: var(--secondary-color);
}

/* === RESPONSIVE === */
@media (max-width: 991px) {
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.2rem;
    }
    
    .main-content {
        padding-top: 66px;
    }
    
    .page-header {
        margin-top: 66px;
        padding: 2rem 0 1.5rem;
    }
}

@media (max-width: 767px) {
    .hero-section {
        min-height: 80vh;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .btn-lg {
        padding: 0.75rem 1.5rem;
        font-size: 1rem;
    }
    
    .display-4 {
        font-size: 2rem;
    }
    
    .display-5 {
        font-size: 1.75rem;
    }
    
    .display-6 {
        font-size: 1.5rem;
    }
}

/* === UTILITIES === */
.shadow-sm {
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.08) !important;
}

.shadow {
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.15) !important;
}

.rounded {
    border-radius: var(--border-radius) !important;
}

/* === ANIMATIONS === */
@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

.fade-in {
    animation: fadeIn 0.5s ease;
}

/* === PRINT STYLES === */
@media print {
    .navbar,
    .footer,
    .btn,
    .social-links,
    .hero-scroll-indicator {
        display: none !important;
    }
    
    .main-content {
        padding-top: 0;
    }
    
    .page-header {
        margin-top: 0;
    }
}