/* @module NUCLEO - Infrastruttura | @doc doc/tecnico/nucleo.md#nucleo */
/* @id NUCLEO-15 - Foglio comune | @doc doc/tecnico/nucleo.md#nucleo-15 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #d32f2f;
    --secondary-color: #1976d2;
    --dark-color: #212121;
    --light-gray: #f5f5f5;
    --medium-gray: #757575;
    --text-color: #333;
    --white: #ffffff;
    --success: #4caf50;
    --error: #f44336;
    --border-radius: 8px;
    --transition: all 0.3s ease;
}

body {
    font-family: 'Roboto', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--white);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.top-bar {
    background-color: var(--dark-color);
    color: var(--white);
    padding: 10px 0;
    font-size: 14px;
}

.top-bar-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
}

.top-bar a {
    color: var(--white);
    text-decoration: none;
    transition: var(--transition);
}

.top-bar a:hover {
    color: var(--primary-color);
}

.contact-info span,
.hours span {
    margin-right: 20px;
}

.main-header {
    background-color: var(--white);
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 0;
}

.logo a {
    font-size: 28px;
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 700;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 30px;
}

.nav-menu a {
    color: var(--text-color);
    text-decoration: none;
    font-weight: 500;
    font-size: 16px;
    padding: 8px 16px;
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.nav-menu a:hover,
.nav-menu a.active {
    color: var(--primary-color);
    background-color: rgba(211, 47, 47, 0.1);
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.mobile-menu-toggle span {
    width: 25px;
    height: 3px;
    background-color: var(--dark-color);
    margin: 3px 0;
    transition: var(--transition);
}

.btn {
    display: inline-block;
    padding: 12px 30px;
    border-radius: var(--border-radius);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
    border: 2px solid transparent;
    cursor: pointer;
    font-size: 16px;
}

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

.btn-primary:hover {
    background-color: #b71c1c;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(211, 47, 47, 0.3);
}

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

.btn-secondary:hover {
    background-color: transparent;
    color: var(--white);
}

.btn-large {
    padding: 16px 40px;
    font-size: 18px;
}

.btn-block {
    display: block;
    width: 100%;
    text-align: center;
}

.section-title {
    text-align: center;
    font-size: 36px;
    margin-bottom: 50px;
    color: var(--dark-color);
    position: relative;
    padding-bottom: 15px;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background-color: var(--primary-color);
}

.why-us {
    padding: 80px 0;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.feature {
    padding: 30px;
    border-left: 4px solid var(--primary-color);
    background-color: var(--light-gray);
    border-radius: var(--border-radius);
}

.feature h4 {
    font-size: 20px;
    margin-bottom: 10px;
    color: var(--dark-color);
}

.feature p {
    color: var(--medium-gray);
}

.values-section {
    padding: 80px 0;
}

.values-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.value-card {
    background-color: var(--white);
    padding: 40px 30px;
    border-radius: var(--border-radius);
    text-align: center;
    box-shadow: 0 4px 15px rgba(0,0,0,0.08);
    transition: var(--transition);
}

.value-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.15);
}

.value-icon {
    font-size: 64px;
    margin-bottom: 20px;
}

.value-card h3 {
    font-size: 22px;
    margin-bottom: 15px;
    color: var(--dark-color);
}