:root {
    --primary-color: #005f73;
    --secondary-color: #0a9396;
    --bg-color: #f8f9fa;
    --text-color: #333333;
    --card-bg: #ffffff;
    --border-color: #e9ecef;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
}

.container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 20px;
}

header {
    background-color: var(--primary-color);
    color: white;
    padding: 1rem 0;
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: bold;
}

nav ul {
    list-style: none;
    display: flex;
    gap: 20px;
}

nav a {
    color: white;
    text-decoration: none;
    font-weight: 500;
}

.adsense-placeholder {
    background-color: #e0e0e0;
    border: 1px dashed #999;
    color: #666;
    text-align: center;
    padding: 20px;
    margin: 30px 0;
    border-radius: 4px;
}

#hero-seo {
    text-align: center;
    margin: 40px 0;
}

h1, h2, h3, h4, h5 {
    color: var(--primary-color);
    margin-bottom: 15px;
}

h1 { font-size: 2.2rem; }

.calculator-card {
    background-color: var(--card-bg);
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.05);
    margin-bottom: 40px;
}

.form-group {
    margin-bottom: 20px;
}

label {
    display: block;
    font-weight: bold;
    margin-bottom: 8px;
}

input, select {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-size: 1rem;
}

button {
    background-color: var(--secondary-color);
    color: white;
    border: none;
    padding: 15px 20px;
    font-size: 1.1rem;
    border-radius: 4px;
    cursor: pointer;
    width: 100%;
    font-weight: bold;
    transition: background-color 0.3s;
}

button:hover {
    background-color: var(--primary-color);
}

.hidden {
    display: none;
}

.results-box {
    margin-top: 30px;
    padding-top: 20px;
    border-top: 2px solid var(--border-color);
}

.result-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-top: 20px;
}

.result-item {
    background-color: var(--bg-color);
    padding: 15px;
    border-radius: 4px;
    text-align: center;
}

.result-item .label {
    display: block;
    font-size: 0.9rem;
    color: #666;
}

.result-item .value {
    display: block;
    font-size: 1.4rem;
    font-weight: bold;
    color: var(--primary-color);
    margin-top: 5px;
}

.disclaimer {
    font-size: 0.8rem;
    color: #777;
    margin-top: 15px;
    text-align: center;
}

.tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
    margin-bottom: 40px;
}

.tool-card {
    background-color: var(--card-bg);
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}

.tool-card button {
    background-color: #ccc;
    cursor: not-allowed;
    margin-top: 15px;
}

details {
    background-color: var(--card-bg);
    padding: 15px;
    border-radius: 4px;
    margin-bottom: 10px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.05);
}

summary {
    font-weight: bold;
    cursor: pointer;
    color: var(--primary-color);
}

footer {
    background-color: var(--text-color);
    color: white;
    text-align: center;
    padding: 20px 0;
    margin-top: 40px;
}

/* ===============================
   ADSENSE - CLS PREVENTION
   =============================== */

.adsense-container {
    position: relative;
    width: 100%;
    overflow: hidden;
    background: #f5f5f5;
    border: 1px solid #e0e0e0;
    margin: 20px auto;
    border-radius: 4px;
}

/* Spazio riservato per banner top (728x90 desktop, 320x50 mobile) */
.adsense-top {
    min-height: 90px;
    max-width: 728px;
}

@media (max-width: 768px) {
    .adsense-top {
        min-height: 50px;
    }
}

/* Spazio riservato per banner mid (300x250 o responsive) */
.adsense-mid {
    min-height: 250px;
    max-width: 336px;
}

@media (max-width: 768px) {
    .adsense-mid {
        max-width: 100%;
        min-height: 280px;
    }
}

/* Placeholder animato mentre carica */
.adsense-container::before {
    content: '';
    display: block;
    width: 100%;
    height: 100%;
    position: absolute;
    top: 0;
    left: 0;
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 200% 100%;
    animation: adsense-loading 1.5s infinite;
    z-index: 0;
}

@keyframes adsense-loading {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

.adsense-container ins {
    position: relative;
    z-index: 1;
}