:root {
    --primary: #2563eb;
    --primary-hover: #1d4ed8;
    --secondary: #64748b;
    --accent: #f59e0b;
    --bg-dark: #0f172a;
    --card-bg: rgba(255, 255, 255, 0.05);
    --border-color: rgba(255, 255, 255, 0.1);
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --glass-blur: 15px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Outfit', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background-color: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

.main-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    background: linear-gradient(rgba(15, 23, 42, 0.8), rgba(15, 23, 42, 0.8)), 
                url('images/bg.png') no-repeat center center/cover;
}

.landing-card {
    background: var(--card-bg);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border: 1px solid var(--border-color);
    border-radius: 24px;
    padding: 3rem;
    width: 100%;
    max-width: 800px;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    animation: fadeIn 0.8s ease-out;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.header {
    text-align: center;
    margin-bottom: 3rem;
}

.header h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, #fff 0%, #cbd5e1 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.header p {
    color: var(--text-secondary);
    font-size: 1.1rem;
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-group.full-width {
    grid-column: span 2;
}

label {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-left: 0.25rem;
}

input, textarea {
    background: rgba(15, 23, 42, 0.6);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 0.75rem 1rem;
    color: white;
    font-size: 1rem;
    transition: var(--transition);
    width: 100%;
}

input:focus, textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.15);
    background: rgba(15, 23, 42, 0.8);
}

textarea {
    resize: vertical;
    min-height: 100px;
}

.submit-btn {
    margin-top: 1rem;
    background: var(--primary);
    color: white;
    border: none;
    border-radius: 12px;
    padding: 1rem 2rem;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.submit-btn:hover {
    background: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 10px 15px -3px rgba(37, 99, 235, 0.3);
}

.submit-btn:active {
    transform: translateY(0);
}

.submit-btn:disabled {
    opacity: 0.7;
    cursor: not-allowed;
}

#response-message {
    margin-top: 1.5rem;
    padding: 1rem;
    border-radius: 12px;
    text-align: center;
    font-weight: 500;
    display: none;
    animation: slideUp 0.3s ease-out;
}

@keyframes slideUp {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

#response-message.success {
    background: rgba(34, 197, 94, 0.1);
    color: #4ade80;
    border: 1px solid rgba(34, 197, 94, 0.2);
}

#response-message.error {
    background: rgba(239, 68, 68, 0.1);
    color: #f87171;
    border: 1px solid rgba(239, 68, 68, 0.2);
}

/* Responsive adjustments */
@media (max-width: 640px) {
    .form-grid {
        grid-template-columns: 1fr;
    }
    .form-group.full-width {
        grid-column: span 1;
    }
    .landing-card {
        padding: 2rem;
    }
    .header h1 {
        font-size: 1.8rem;
    }
}

/* Footer & Link Area Riservata */
.footer {
    padding: 2rem;
    text-align: center;
}

.admin-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.8rem;
    opacity: 0.5;
    transition: var(--transition);
}

.admin-link:hover {
    opacity: 1;
    color: var(--primary);
}

/* Privacy Styles */
.privacy-group {
    margin-top: 1rem;
}

.checkbox-container {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    cursor: pointer;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.checkbox-container input {
    width: auto;
    margin-top: 0.3rem;
    cursor: pointer;
    accent-color: var(--primary);
}

.privacy-text a {
    color: var(--primary);
    text-decoration: none;
    font-weight: 500;
}

.privacy-text a:hover {
    text-decoration: underline;
}