@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;600;700;800&display=swap');

:root {
    --primary-color: #007bff;
    --secondary-color: #0056b3;
    --background-start: #f4f7fc;
    --background-end: #dce5f5;
    --text-color: #212529;
    --subtle-text: #6c757d;
    --card-background: rgba(255, 255, 255, 0.9);
    --gradient-button: linear-gradient(45deg, #007bff 0%, #0056b3 100%);
    --error-color: #dc3545;
}

body {
    font-family: 'Poppins', sans-serif;
    background-color: var(--background-start);
    background-image: radial-gradient(circle at top left, var(--background-start) 0%, var(--background-end) 100%);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    margin: 0;
    padding: 40px 20px;
    box-sizing: border-box;
}

.main-container {
    width: 100%;
    max-width: 1000px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 40px;
}

.header-section {
    text-align: center;
    max-width: 800px;
}

.header-section h1 {
    color: var(--text-color);
    font-weight: 800;
    font-size: clamp(2rem, 5vw, 3.5rem);
    line-height: 1.1;
    margin-bottom: 10px;
    text-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
}

.header-section h1 span {
    color: var(--primary-color);
}

.header-section p {
    color: var(--subtle-text);
    font-weight: 400;
    font-size: clamp(1rem, 2.5vw, 1.25rem);
    margin-bottom: 40px;
}

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    width: 100%;
}

.benefit-card {
    background-color: var(--card-background);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    padding: 30px;
    border-radius: 16px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    text-align: center;
}

.benefit-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.12);
}

.benefit-card .icon {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.benefit-card h3 {
    font-weight: 700;
    font-size: 1.3rem;
    color: var(--text-color);
    margin-top: 0;
    margin-bottom: 10px;
}

.benefit-card p {
    color: var(--subtle-text);
    font-size: 0.9rem;
    margin: 0;
}

.form-section {
    width: 100%;
    max-width: 600px;
    background-color: var(--card-background);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    padding: 50px;
    border-radius: 20px;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
    text-align: center;
    transition: all 0.4s ease;
}

.form-section:hover {
    transform: scale(1.02);
    box-shadow: 0 20px 45px rgba(0, 0, 0, 0.15);
}

.form-section h2 {
    font-weight: 700;
    font-size: 2rem;
    margin-bottom: 10px;
    color: var(--text-color);
}

.form-section p {
    color: var(--subtle-text);
    margin-bottom: 30px;
}

.input-group {
    position: relative;
}

.input-group input[type="text"] {
    width: 100%;
    padding: 18px 15px;
    font-size: 1.1rem;
    border: 2px solid #e9ecef;
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.6);
    transition: all 0.3s ease;
    box-sizing: border-box;
}

.input-group input[type="text"]:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(0, 123, 255, 0.25);
}

button {
    background-image: var(--gradient-button);
    color: white;
    border: none;
    padding: 20px 45px;
    font-size: 1.2rem;
    font-weight: 700;
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.3s ease;
    margin-top: 30px;
    box-shadow: 0 10px 20px rgba(0, 123, 255, 0.2);
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
}

button:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(0, 123, 255, 0.3);
}

button:active {
    transform: translateY(-1px);
}

button:disabled {
    cursor: not-allowed;
    background: #aaa;
    box-shadow: none;
    transform: none;
}

/* Stili per accessibilità e UX */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

.error-message-inline {
    color: var(--error-color);
    font-size: 0.9rem;
    text-align: left;
    margin-top: 5px;
    min-height: 1.2em;
}

/* Stili per il loader */
.loader-container {
    margin-top: 20px;
    text-align: center;
    color: var(--subtle-text);
}
.loader-spinner {
    border: 4px solid #f3f3f3;
    border-top: 4px solid var(--primary-color);
    border-radius: 50%;
    width: 30px;
    height: 30px;
    animation: spin 1s linear infinite;
    margin: 0 auto 10px;
}
@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}