:root {
    --bg-body: #ffffff;
    --bg-card: #ffffff;
    --bg-input: #f9fafb;
    --bg-toggle: #f3f4f6;
    --text-main: #111827;
    --text-muted: #6b7280;
    --text-label: #374151;
    --border-light: #e5e7eb;
    --border-focus: #4b5563;
    --brand-dark: #1f2937;
    --brand-dark-hover: #111827;
    --error-color: #dc2626;
    --success-color: #059669;
}

body {
    background-color: var(--bg-body);
    font-family: 'Inter', sans-serif;
    color: var(--text-main);
    margin: 0;
    -webkit-font-smoothing: antialiased;
}

.fade-in-up {
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 0.7s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}
.delay-1 { animation-delay: 0.15s; }

@keyframes fadeInUp { to { opacity: 1; transform: translateY(0); } }

.contact-page-wrapper {
    max-width: 680px;
    margin: 140px auto 80px auto;
    padding: 0 24px;
}

.contact-header { text-align: center; margin-bottom: 48px; }
.contact-header h1 { font-size: 42px; font-weight: 700; letter-spacing: -0.03em; margin: 0 0 12px 0; }
.contact-header p { font-size: 18px; color: var(--text-muted); line-height: 1.6; margin: 0 auto; max-width: 500px; }

.contact-card {
    background-color: var(--bg-card);
    border-radius: 24px;
    padding: 48px;
    box-shadow: 0 10px 40px -10px rgba(0, 0, 0, 0.08), 0 1px 3px rgba(0, 0, 0, 0.03);
    border: 1px solid rgba(0,0,0,0.04);
}

.custom-toggle-container {
    display: flex; position: relative; background-color: var(--bg-toggle);
    border-radius: 12px; padding: 4px; margin-bottom: 40px; border: 1px solid var(--border-light);
}

.custom-toggle-container input[type="radio"] { display: none; }
.toggle-label { flex: 1; text-align: center; padding: 12px 0; font-size: 14px; font-weight: 600; color: var(--text-muted); cursor: pointer; z-index: 2; transition: color 0.3s ease; }

.toggle-slider {
    position: absolute; top: 4px; left: 4px; width: calc(50% - 4px); height: calc(100% - 8px);
    background-color: #ffffff; border-radius: 8px; box-shadow: 0 1px 3px rgba(0,0,0,0.1), 0 1px 2px rgba(0,0,0,0.06);
    transition: transform 0.3s cubic-bezier(0.25, 0.8, 0.25, 1); z-index: 1;
}

#toggle-persona:checked ~ .toggle-slider { transform: translateX(0); }
#toggle-azienda:checked ~ .toggle-slider { transform: translateX(100%); }
#toggle-persona:checked ~ label[for="toggle-persona"], #toggle-azienda:checked ~ label[for="toggle-azienda"] { color: var(--text-main); }

.premium-form .form-section { transition: opacity 0.3s ease; }
.hidden { display: none; opacity: 0; }
.input-group { margin-bottom: 24px; position: relative; }
.input-group label { display: block; font-size: 13px; font-weight: 600; color: var(--text-label); margin-bottom: 8px; }

/* INPUT TESTUALI */
.input-group input, .input-group textarea, .input-group select {
    width: 100%; box-sizing: border-box; background-color: var(--bg-input); border: 1px solid var(--border-light);
    border-radius: 12px; padding: 16px; font-size: 15px; font-family: inherit; color: var(--text-main);
    transition: all 0.2s ease; outline: none;
}

/* CUSTOM SELECT DROPDOWN (Freccia stile Apple) */
.custom-select {
    appearance: none; -webkit-appearance: none;
    background-image: url("data:image/svg+xml;charset=US-ASCII,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20width%3D%22292.4%22%20height%3D%22292.4%22%3E%3Cpath%20fill%3D%22%236b7280%22%20d%3D%22M287%2069.4a17.6%2017.6%200%200%200-13-5.4H18.4c-5%200-9.3%201.8-12.9%205.4A17.6%2017.6%200%200%200%200%2082.2c0%205%201.8%209.3%205.4%2012.9l128%20127.9c3.6%203.6%207.8%205.4%2012.8%205.4s9.2-1.8%2012.8-5.4L287%2095c3.5-3.5%205.4-7.8%205.4-12.8%200-5-1.9-9.2-5.5-12.8z%22%2F%3E%3C%2Fsvg%3E");
    background-repeat: no-repeat;
    background-position: right 16px top 50%;
    background-size: 12px auto;
    cursor: pointer;
}
.custom-select:invalid { color: #9ca3af; } /* Colore grigio quando c'è "Seleziona..." */

/* TEXTAREA AUTO-RESIZE */
.auto-resize-textarea {
    resize: none; /* Rimuove la linguetta fastidiosa */
    overflow: hidden; /* Nasconde la scrollbar laterale */
    min-height: 60px; /* Altezza iniziale piccolina, poi cresce */
    display: block;
}

.input-group input::placeholder, .input-group textarea::placeholder { color: #9ca3af; }
.input-group input:focus, .input-group textarea:focus, .input-group select:focus {
    background-color: #ffffff; border-color: var(--border-focus); box-shadow: 0 0 0 3px rgba(75, 85, 99, 0.1);
}

.input-group.has-error input, .input-group.has-error textarea, .input-group.has-error select {
    border-color: var(--error-color); background-color: #fef2f2;
}
.error-msg { display: none; color: var(--error-color); font-size: 12px; font-weight: 500; margin-top: 6px; }
.input-group.has-error .error-msg { display: block; }

.btn-premium {
    position: relative; width: 100%; background-color: var(--brand-dark); color: #ffffff; border: none;
    border-radius: 12px; padding: 18px; font-size: 16px; font-weight: 600; cursor: pointer; transition: all 0.2s ease;
    display: flex; justify-content: center; align-items: center; margin-top: 10px;
}
.btn-premium:hover { background-color: var(--brand-dark-hover); box-shadow: 0 4px 12px rgba(0,0,0,0.15); }
.btn-premium:active { transform: scale(0.98); }
.btn-premium:disabled { background-color: var(--text-muted); cursor: not-allowed; box-shadow: none; }

.btn-loader { display: none; width: 20px; height: 20px; border: 3px solid rgba(255,255,255,0.3); border-top-color: #fff; border-radius: 50%; animation: spin 1s infinite linear; }
.btn-premium.loading .btn-text { display: none; }
.btn-premium.loading .btn-loader { display: block; }
@keyframes spin { 100% { transform: rotate(360deg); } }

.feedback-banner { display: none; padding: 16px; border-radius: 12px; font-size: 14px; font-weight: 500; text-align: center; margin-bottom: 24px; }
.feedback-banner.success { display: block; background-color: #f0fdf4; color: var(--success-color); border: 1px solid #bbf7d0; }
.feedback-banner.error { display: block; background-color: #fef2f2; color: var(--error-color); border: 1px solid #fecaca; }

@media (max-width: 768px) {
    .contact-page-wrapper { margin-top: 100px; padding: 0 16px; }
    .contact-card { padding: 32px 24px; border-radius: 20px; }
    .contact-header h1 { font-size: 32px; }
    .contact-header p { font-size: 16px; }
}