/* ==== DEMO LANDINGPAGE STYLING ==== */

/* Hero-Bereich Farbharmonie */
.demo-hero {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    text-align: center;
    padding: 80px 20px;
    background: linear-gradient(135deg, #3498db, #2ecc71);
    color: #fff;
}
.demo-hero h1 {
    font-size: 2.8rem;
    font-weight: 700;
    margin-bottom: 15px;
    text-shadow: 0 3px 6px rgba(0,0,0,0.2);
}
.demo-hero p {
    font-size: 1.2rem;
    max-width: 700px;
    margin: 0 auto;
    line-height: 1.6;
}

/* Rechner als App-Card */
.kalk-rechner-container {
    background: #ffffff;
    margin-top: -40px;
    border-radius: 18px;
    box-shadow: 0 10px 25px rgba(0,0,0,0.12);
    padding: 25px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.kalk-rechner-container:hover {
    transform: translateY(-3px);
    box-shadow: 0 14px 30px rgba(0,0,0,0.18);
}

/* Eingabefelder */
.kalk-rechner-container input,
.kalk-rechner-container select {
    border: 1px solid #ccd6dd;
    border-radius: 12px;
    padding: 12px;
}
.kalk-rechner-container input:focus,
.kalk-rechner-container select:focus {
    border-color: #2ecc71;
    box-shadow: 0 0 8px rgba(46,204,113,0.3);
}

/* Buttons */
#berechnen,
#export-buttons button {
    background: linear-gradient(135deg, #3498db, #2ecc71);
    color: #fff;
    font-size: 1rem;
    font-weight: 600;
    border: none;
    border-radius: 12px;
    cursor: pointer;
    padding: 12px 20px;
    transition: background 0.3s ease, transform 0.2s ease;
}
#berechnen:hover,
#export-buttons button:hover {
    background: linear-gradient(135deg, #2980b9, #27ae60);
    transform: translateY(-2px);
}

/* Ergebnisse */
#kalkrechner-results {
    margin-top: 25px;
    padding: 20px;
    background: #f9fcfb;
    border-radius: 14px;
    border: 1px solid #e0e6e4;
}
#kalkrechner-results h3 {
    margin-top: 0;
    color: #2c3e50;
}