/* ============================================================
   RIPASSO DOM - STILI
   ============================================================ */

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; /* Stesso font dashboard */
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%); /* Stesso sfondo dashboard */
    min-height: 100vh;
    margin: 0;
    padding: 20px;
    color: #2c3e50;
}

.container {
    background: white;
    width: 100%;
    max-width: 650px;
    margin: 0 auto;
    padding: 30px;
    border-radius: 20px;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
}

h1 {
    text-align: center;
    color: #34495e;
    margin: 0 0 10px 0;
    font-size: 2rem;
}

.subtitle {
    text-align: center;
    color: #7f8c8d;
    font-size: 1rem;
    margin-bottom: 30px;
}

/* ============ STEP ============ */

.step {
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 1px solid #ddd;
}

.step:last-child {
    border-bottom: none;
}

.step h2 {
    color: #2980b9;
    margin-top: 0;
    margin-bottom: 5px;
    font-size: 1.5rem;
}

.step-description {
    color: #7f8c8d;
    margin-bottom: 15px;
    font-size: 0.95rem;
    margin-top: 0;
}

/* ============ EXERCISE ============ */

.exercise {
    background: white;
    margin-bottom: 15px;
    padding: 15px;
    border-bottom: 1px solid #eee;
    border-radius: 6px;
    transition: box-shadow 0.2s ease;
}

.exercise:hover {
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}

.exercise:last-child {
    border-bottom: none;
}

.exercise h3 {
    color: #2c3e50;
    margin: 15px 0 10px 0;
    font-size: 1rem;
}

.exercise p {
    margin: 5px 0;
    font-size: 0.9rem;
}

.testo-blu {
    color: #3498db;
    font-weight: 500;
}


/* ============ INPUT & BUTTON ============ */

input[type="text"],
input[type="number"],
textarea {
    width: 100%;
    padding: 8px;
    margin: 8px 0;
    border: 1px solid #bdc3c7;
    border-radius: 5px;
    font-size: 0.95rem;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    box-sizing: border-box;
}

input[type="text"]:focus,
input[type="number"]:focus,
textarea:focus {
    outline: none;
    border-color: #3498db;
    box-shadow: 0 0 5px rgba(52, 152, 219, 0.2);
}

button {
    background: #3498db;
    color: white;
    border: none;
    padding: 10px 20px;
    margin: 8px 5px 8px 0;
    border-radius: 8px;
    cursor: pointer;
    font-weight: bold;
    transition: all 0.2s ease;
    font-size: 0.9rem;
    box-shadow: 0 2px 6px rgba(52, 152, 219, 0.2);
}

button:hover {
    background: #2980b9;
    box-shadow: 0 4px 12px rgba(52, 152, 219, 0.3);
    transform: translateY(-1px);
}

button:active {
    border-radius: 5px;
    color: #2c3e50;
    white-space: pre-wrap;
    word-break: break-word;
    box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.03);
}

/* ============ RISULTATO & AREA OUTPUT ============ */

.risultato {
    background: #f8fafb;
    border: 1px solid #d5d8dc;
    padding: 8px;
    border-radius: 5px;
    margin-top: 8px;
    color: #34495e;
    font-size: 0.85rem;
    box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.03);
}

.area-output {
    background: #f8fafb;
    border: 1px solid #d5d8dc;
    padding: 10px;
    border-radius: 5px;
    margin-top: 8px;
    color: #34495e;
    font-size: 0.9rem;
    box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.03);
    min-height: 20px;
    word-wrap: break-word;
    white-space: pre-wrap;
}

/* ============ BOX CLICK ============ */

.box-click {
    display: inline-block;
    width: 90px;
    height: 90px;
    background: #f0f3f4;
    color: #2c3e50;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
    cursor: pointer;
    margin: 5px;
    font-weight: bold;
    font-size: 0.9rem;
    border: 1px solid #d5d8dc;
    transition: all 0.2s ease;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

.box-click:hover {
    background: #e8ecef;
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

.box-click:active {
    transform: translateY(0);
}

/* ============ ELEMENTO TOGGLE ============ */

.elemento-normale {
    padding: 15px;
    border: 2px solid #3498db;
    border-radius: 8px;
    background: white;
    cursor: pointer;
    transition: all 0.3s ease;
    color: #2c3e50;
}

.elemento-normale:hover {
    background: #ecf0f1;
    box-shadow: 0 2px 8px rgba(52, 152, 219, 0.2);
}

.elemento-attivo {
    background: #3498db;
    color: white;
    border-color: #2980b9;
    transform: scale(1.05);
    box-shadow: 0 4px 12px rgba(52, 152, 219, 0.4);
}