/* ========================================
   Copertura Internet Italia - Design System
   Analytical / Report Style
   ======================================== */

/* Color Variables - Analytical Palette */
:root {
    /* Primary Colors */
    --graphite-dark: #2d3436;
    --graphite-medium: #636e72;
    --graphite-light: #b2bec3;
    
    /* Blue-Grey Accents */
    --bluegrey-dark: #2c3e50;
    --bluegrey-medium: #34495e;
    --bluegrey-light: #5d6d7e;
    
    /* Soft Orange for Highlights */
    --orange-primary: #e67e22;
    --orange-light: #f39c12;
    --orange-muted: #fad7a0;
    
    /* Background Colors */
    --bg-white: #ffffff;
    --bg-pale-grey: #f8f9fa;
    --bg-light-grey: #ecf0f1;
    
    /* Text Colors */
    --text-primary: #2d3436;
    --text-secondary: #636e72;
    --text-muted: #95a5a6;
    
    /* Border Colors */
    --border-light: #dfe6e9;
    --border-medium: #b2bec3;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-xxl: 3rem;
    
    /* Typography */
    --font-family-base: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    --font-family-heading: 'Georgia', serif;
}

/* Reset & Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family-base);
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-pale-grey);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-family-heading);
    font-weight: 600;
    color: var(--graphite-dark);
    margin-bottom: var(--spacing-md);
}

h1 {
    font-size: 2.5rem;
    font-weight: 700;
    border-bottom: 3px solid var(--orange-primary);
    padding-bottom: var(--spacing-sm);
}

h2 {
    font-size: 1.8rem;
    color: var(--bluegrey-dark);
    margin-top: var(--spacing-xl);
    border-left: 4px solid var(--bluegrey-light);
    padding-left: var(--spacing-md);
}

h3 {
    font-size: 1.4rem;
    color: var(--bluegrey-medium);
    margin-top: var(--spacing-lg);
}

h4 {
    font-size: 1.2rem;
    color: var(--graphite-medium);
    margin-top: var(--spacing-md);
}

p {
    margin-bottom: var(--spacing-md);
    max-width: 800px;
}

a {
    color: var(--bluegrey-dark);
    text-decoration: none;
    transition: color 0.3s ease;
}

a:hover {
    color: var(--orange-primary);
    text-decoration: underline;
}

/* Header & Navigation */
header {
    background-color: var(--graphite-dark);
    color: var(--bg-white);
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-md) var(--spacing-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
}

.logo {
    font-family: var(--font-family-heading);
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--bg-white);
    text-decoration: none;
}

.logo span {
    color: var(--orange-primary);
}

nav {
    margin-top: var(--spacing-sm);
}

nav ul {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

nav a {
    color: var(--bg-white);
    font-size: 0.9rem;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: 4px;
    transition: all 0.3s ease;
    text-decoration: none;
}

nav a:hover,
nav a.active {
    background-color: var(--bluegrey-medium);
    color: var(--bg-white);
    text-decoration: none;
}

/* Main Content */
main {
    flex: 1;
    max-width: 1200px;
    width: 100%;
    margin: 0 auto;
    padding: var(--spacing-xl) var(--spacing-lg);
    background-color: var(--bg-white);
}

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

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

/* Sections */
section {
    margin-bottom: var(--spacing-xxl);
    padding: var(--spacing-xl);
    background-color: var(--bg-white);
    border: 1px solid var(--border-light);
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}

section:nth-child(even) {
    background-color: var(--bg-pale-grey);
}

/* Disclaimer Box */
.disclaimer-box {
    background-color: var(--orange-muted);
    border-left: 4px solid var(--orange-primary);
    padding: var(--spacing-md) var(--spacing-lg);
    margin: var(--spacing-xl) 0;
    border-radius: 4px;
}

.disclaimer-box p {
    margin: 0;
    color: var(--graphite-dark);
    font-size: 0.95rem;
}

.disclaimer-box p + p {
    margin-top: var(--spacing-sm);
}

/* Data Tables */
.data-table {
    width: 100%;
    border-collapse: collapse;
    margin: var(--spacing-lg) 0;
    background-color: var(--bg-white);
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}

.data-table thead {
    background-color: var(--bluegrey-dark);
    color: var(--bg-white);
}

.data-table th {
    padding: var(--spacing-md);
    text-align: left;
    font-weight: 600;
    border-bottom: 2px solid var(--bluegrey-medium);
}

.data-table td {
    padding: var(--spacing-md);
    border-bottom: 1px solid var(--border-light);
}

.data-table tbody tr:hover {
    background-color: var(--bg-pale-grey);
}

.data-table tbody tr:nth-child(even) {
    background-color: var(--bg-light-grey);
}

.data-table tbody tr:nth-child(even):hover {
    background-color: var(--bg-pale-grey);
}

/* Charts & Visualizations */
.chart-container {
    margin: var(--spacing-xl) 0;
    padding: var(--spacing-lg);
    background-color: var(--bg-white);
    border: 1px solid var(--border-light);
    border-radius: 8px;
}

.chart-placeholder {
    width: 100%;
    height: 300px;
    background: linear-gradient(135deg, var(--bg-light-grey) 0%, var(--bg-pale-grey) 100%);
    border: 2px dashed var(--border-medium);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
    font-size: 1.1rem;
    text-align: center;
}

.bar-chart {
    display: flex;
    align-items: flex-end;
    gap: var(--spacing-md);
    height: 250px;
    padding: var(--spacing-lg);
    background-color: var(--bg-white);
    border: 1px solid var(--border-light);
    border-radius: 8px;
}

.bar {
    flex: 1;
    background-color: var(--bluegrey-medium);
    border-radius: 4px 4px 0 0;
    transition: background-color 0.3s ease;
    position: relative;
}

.bar:hover {
    background-color: var(--orange-primary);
}

.bar-label {
    position: absolute;
    bottom: -30px;
    left: 50%;
    transform: translateX(-50%);
    font-size: 0.8rem;
    color: var(--text-secondary);
    white-space: nowrap;
}

.bar-value {
    position: absolute;
    top: -25px;
    left: 50%;
    transform: translateX(-50%);
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--graphite-dark);
}

/* FAQ Accordion */
.faq-item {
    margin-bottom: var(--spacing-md);
    border: 1px solid var(--border-light);
    border-radius: 8px;
    overflow: hidden;
}

.faq-question {
    background-color: var(--bluegrey-light);
    padding: var(--spacing-md) var(--spacing-lg);
    cursor: pointer;
    font-weight: 600;
    color: var(--bg-white);
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: background-color 0.3s ease;
}

.faq-question:hover {
    background-color: var(--bluegrey-medium);
}

.faq-answer {
    padding: var(--spacing-lg);
    background-color: var(--bg-white);
    border-top: 1px solid var(--border-light);
}

/* Contact Form */
.contact-form {
    max-width: 600px;
    margin: var(--spacing-xl) 0;
}

.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-group label {
    display: block;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--graphite-dark);
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--border-medium);
    border-radius: 4px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--bluegrey-medium);
    box-shadow: 0 0 0 3px rgba(44, 62, 80, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 150px;
}

.btn-submit {
    background-color: var(--bluegrey-dark);
    color: var(--bg-white);
    padding: var(--spacing-md) var(--spacing-xl);
    border: none;
    border-radius: 4px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

.btn-submit:hover {
    background-color: var(--bluegrey-medium);
}

/* Contact Info Box */
.contact-info {
    background-color: var(--bg-pale-grey);
    padding: var(--spacing-xl);
    border-radius: 8px;
    margin-bottom: var(--spacing-xl);
}

.contact-info h3 {
    margin-top: 0;
}

.contact-info-item {
    margin-bottom: var(--spacing-md);
    display: flex;
    align-items: flex-start;
}

.contact-info-label {
    font-weight: 600;
    min-width: 120px;
    color: var(--graphite-dark);
}

.contact-info-value {
    color: var(--text-secondary);
}

/* Footer */
footer {
    background-color: var(--graphite-dark);
    color: var(--bg-white);
    padding: var(--spacing-xl) var(--spacing-lg);
    margin-top: auto;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-xl);
}

.footer-section h4 {
    color: var(--bg-white);
    margin-top: 0;
    margin-bottom: var(--spacing-md);
}

.footer-section p {
    color: var(--graphite-light);
    font-size: 0.9rem;
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: var(--spacing-sm);
}

.footer-links a {
    color: var(--graphite-light);
    font-size: 0.9rem;
    text-decoration: none;
}

.footer-links a:hover {
    color: var(--orange-primary);
}

.footer-bottom {
    max-width: 1200px;
    margin: var(--spacing-xl) auto 0;
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--bluegrey-medium);
    text-align: center;
    font-size: 0.85rem;
    color: var(--graphite-light);
}

/* Responsive Design */
@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        text-align: center;
    }
    
    nav ul {
        justify-content: center;
        gap: var(--spacing-sm);
    }
    
    h1 {
        font-size: 2rem;
    }
    
    h2 {
        font-size: 1.5rem;
    }
    
    main {
        padding: var(--spacing-lg) var(--spacing-md);
    }
    
    section {
        padding: var(--spacing-lg);
    }
    
    .data-table {
        font-size: 0.9rem;
    }
    
    .data-table th,
    .data-table td {
        padding: var(--spacing-sm);
    }
}

@media (max-width: 480px) {
    nav ul {
        flex-direction: column;
        align-items: center;
    }
    
    h1 {
        font-size: 1.8rem;
    }
    
    .bar-chart {
        height: 200px;
        padding: var(--spacing-md);
    }
    
    .disclaimer-box {
        padding: var(--spacing-sm) var(--spacing-md);
    }
}

/* Print Styles */
@media print {
    header,
    footer,
    nav {
        display: none;
    }
    
    body {
        background-color: var(--bg-white);
    }
    
    main {
        padding: 0;
        max-width: 100%;
    }
    
    section {
        page-break-inside: avoid;
        box-shadow: none;
        border: 1px solid var(--border-light);
    }
    
    .data-table {
        page-break-inside: auto;
    }
    
    .data-table tr {
        page-break-inside: avoid;
        page-break-after: auto;
    }
}

/* Utility Classes */
.text-center {
    text-align: center;
}

.text-muted {
    color: var(--text-muted);
}

.mt-xl {
    margin-top: var(--spacing-xl);
}

.mb-xl {
    margin-bottom: var(--spacing-xl);
}