:root {
    --color-primary: #5A1128;
    --color-secondary: #6F1D42;
    --color-tertiary: #B41A58;
    --color-quaternary: #6EBAE5;
    --color-accent: #6EBAE5;
    --color-white: #ffffff;
    --color-gray-light: #F6F3F7;
    --color-gray: #7a7a82;
    --color-dark: #0E0F14;
    --font-primary: 'Outfit', sans-serif;
    --transition: all 0.3s ease;
}

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

body {
    font-family: var(--font-primary);
    font-size: 1.125rem;
    line-height: 1.7;
    color: var(--color-dark);
    background: var(--color-white);
    overflow-x: hidden;
}

.navbar-fixed {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.97);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(110, 186, 229, 0.12);
    z-index: 1000;
    padding: 1.2rem 0;
    box-shadow: 0 2px 16px rgba(90, 17, 40, 0.04);
    transition: var(--transition);
}

.navbar-brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-weight: 700;
    font-size: 1.5rem;
    color: var(--color-primary);
    text-decoration: none;
    transition: var(--transition);
}

.navbar-brand:hover {
    color: var(--color-tertiary);
}

.navbar-brand svg {
    width: 38px;
    height: 38px;
}

.navbar-nav {
    display: flex;
    align-items: center;
    gap: 2.5rem;
    flex-direction: row;
}

.nav-link {
    color: var(--color-dark);
    text-decoration: none;
    font-weight: 500;
    font-size: 1rem;
    transition: var(--transition);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--color-tertiary), var(--color-quaternary));
    transition: width 0.3s ease;
}

.nav-link:hover {
    color: var(--color-tertiary);
}

.nav-link:hover::after {
    width: 100%;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-tertiary), var(--color-secondary));
    border: none;
    color: var(--color-white);
    padding: 0.85rem 2rem;
    border-radius: 8px;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    display: inline-block;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(180, 26, 88, 0.3);
    color: var(--color-white);
}

.hero-section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 12rem 0 8rem;
    background: linear-gradient(135deg, rgba(110, 186, 229, 0.05) 0%, rgba(180, 26, 88, 0.08) 100%);
    position: relative;
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 50%;
    height: 100%;
    background: linear-gradient(135deg, transparent 0%, rgba(90, 17, 40, 0.03) 100%);
    pointer-events: none;
}

.hero-content h1 {
    font-size: 3.5rem;
    font-weight: 700;
    color: var(--color-primary);
    line-height: 1.2;
    margin-bottom: 1.5rem;
}

.hero-content .lead {
    font-size: 1.35rem;
    color: var(--color-gray);
    margin-bottom: 2.5rem;
    line-height: 1.6;
}

.hero-features {
    list-style: none;
    padding: 0;
    margin: 3rem 0;
}

.hero-features li {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.2rem;
    font-size: 1.15rem;
    color: var(--color-dark);
}

.hero-features li svg {
    width: 24px;
    height: 24px;
    flex-shrink: 0;
    color: var(--color-tertiary);
}

.signals-board {
    background: var(--color-white);
    border-radius: 16px;
    padding: 2.5rem;
    box-shadow: 0 12px 48px rgba(90, 17, 40, 0.12);
    border: 1px solid rgba(110, 186, 229, 0.15);
}

.signals-board h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 1.5rem;
}

.signal-row {
    display: grid;
    grid-template-columns: 2fr 1fr 2fr;
    gap: 1.5rem;
    padding: 1rem 0;
    border-bottom: 1px solid rgba(90, 17, 40, 0.08);
    font-size: 0.95rem;
}

.signal-row:last-child {
    border-bottom: none;
}

.signal-status {
    font-weight: 600;
}

.signal-status.ok {
    color: #10b981;
}

.signal-status.sospetta {
    color: var(--color-tertiary);
}

.signal-status.revisione {
    color: #f59e0b;
}

.signal-confidence {
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 2px solid rgba(110, 186, 229, 0.2);
    font-weight: 600;
    color: var(--color-primary);
}

.section-standard {
    padding: 8rem 0;
}

.section-title {
    font-size: 2.75rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 1.5rem;
    line-height: 1.3;
}

.section-subtitle {
    font-size: 1.25rem;
    color: var(--color-gray);
    margin-bottom: 4rem;
    line-height: 1.6;
}

.problem-cols {
    display: grid;
    grid-template-columns: 1fr 2px 1fr;
    gap: 4rem;
    align-items: start;
}

.problem-divider {
    background: linear-gradient(180deg, transparent, var(--color-tertiary), transparent);
    height: 100%;
}

.problem-item {
    margin-bottom: 3rem;
}

.problem-item h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: 1rem;
}

.problem-item p {
    color: var(--color-gray);
    line-height: 1.7;
}

.process-strip {
    background: var(--color-white);
    border: 1px solid rgba(110, 186, 229, 0.15);
    border-radius: 12px;
    padding: 2.5rem;
    margin-bottom: 1.5rem;
    display: grid;
    grid-template-columns: 80px 1fr 1fr;
    gap: 2.5rem;
    align-items: center;
    transition: var(--transition);
}

.process-strip:hover {
    border-color: var(--color-tertiary);
    box-shadow: 0 8px 32px rgba(180, 26, 88, 0.1);
}

.process-icon {
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(180, 26, 88, 0.1), rgba(110, 186, 229, 0.1));
    border-radius: 12px;
}

.process-icon svg {
    width: 36px;
    height: 36px;
    color: var(--color-tertiary);
}

.process-text h4 {
    font-size: 1.35rem;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: 0.5rem;
}

.process-text p {
    color: var(--color-gray);
    margin: 0;
}

.process-output {
    text-align: right;
}

.process-output strong {
    display: block;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--color-tertiary);
    font-weight: 600;
}

.explainability-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: start;
}

.alert-mock {
    background: var(--color-gray-light);
    border: 1px solid rgba(90, 17, 40, 0.1);
    border-radius: 12px;
    padding: 2rem;
    font-family: 'Courier New', monospace;
    font-size: 0.95rem;
    line-height: 1.8;
}

.alert-mock strong {
    color: var(--color-primary);
}

.driver-list {
    list-style: none;
    padding: 0;
}

.driver-list li {
    display: flex;
    align-items: start;
    gap: 1rem;
    margin-bottom: 1.5rem;
    padding-left: 0;
}

.driver-list li::before {
    content: '•';
    color: var(--color-tertiary);
    font-size: 1.5rem;
    line-height: 1.2;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 3rem;
}

.stat-item {
    text-align: center;
}

.stat-item h3 {
    font-size: 2.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--color-tertiary), var(--color-quaternary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 1rem;
}

.stat-item h4 {
    font-size: 1.35rem;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: 0.75rem;
}

.stat-item p {
    color: var(--color-gray);
    font-size: 1rem;
}

.checklist-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
}

.checklist {
    list-style: none;
    padding: 0;
}

.checklist li {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
    font-size: 1.1rem;
    color: var(--color-dark);
}

.checklist li svg {
    width: 28px;
    height: 28px;
    flex-shrink: 0;
    color: #10b981;
}

.integration-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
}

.integration-block h4 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: 1.5rem;
}

.integration-block p {
    color: var(--color-gray);
    line-height: 1.7;
    margin-bottom: 1.5rem;
}

.code-pseudo {
    background: var(--color-gray-light);
    border: 1px solid rgba(90, 17, 40, 0.1);
    border-radius: 12px;
    padding: 1.5rem;
    font-family: 'Courier New', monospace;
    font-size: 0.9rem;
    line-height: 1.8;
    color: var(--color-dark);
}

.contact-section {
    padding: 8rem 0;
    background: linear-gradient(135deg, rgba(110, 186, 229, 0.05) 0%, rgba(180, 26, 88, 0.08) 100%);
    position: relative;
    overflow: hidden;
}

.contact-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--color-tertiary), var(--color-quaternary), var(--color-tertiary));
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 5rem;
    align-items: start;
}

.contact-info h2 {
    font-size: 2.75rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 1.5rem;
}

.contact-info p {
    font-size: 1.25rem;
    color: var(--color-gray);
    line-height: 1.6;
}

.form-card {
    background: var(--color-white);
    border-radius: 16px;
    padding: 3rem;
    box-shadow: 0 12px 48px rgba(90, 17, 40, 0.12);
    border: 1px solid rgba(110, 186, 229, 0.15);
}

.form-card h3 {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 1rem;
}

.form-card .form-subtitle {
    font-size: 1.05rem;
    color: var(--color-gray);
    margin-bottom: 2.5rem;
}

.form-group {
    margin-bottom: 1.75rem;
}

.form-group label {
    display: block;
    font-weight: 600;
    color: var(--color-dark);
    margin-bottom: 0.5rem;
    font-size: 1rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 1rem;
    border: 1px solid rgba(90, 17, 40, 0.15);
    border-radius: 8px;
    font-family: var(--font-primary);
    font-size: 1rem;
    color: var(--color-dark);
    transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-tertiary);
    box-shadow: 0 0 0 3px rgba(180, 26, 88, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.error-message {
    color: #dc2626;
    font-size: 0.9rem;
    margin-top: 0.5rem;
    display: block;
}

.btn-submit {
    width: 100%;
    background: linear-gradient(135deg, var(--color-tertiary), var(--color-secondary));
    border: none;
    color: var(--color-white);
    padding: 1.1rem;
    border-radius: 8px;
    font-weight: 600;
    font-size: 1.1rem;
    cursor: pointer;
    transition: var(--transition);
}

.btn-submit:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(180, 26, 88, 0.3);
}

.footer {
    background: var(--color-dark);
    color: var(--color-white);
    padding: 4rem 0 2rem;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-brand h3 {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--color-white);
}

.footer-brand p {
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.7;
}

.footer-section h4 {
    font-size: 1.15rem;
    font-weight: 600;
    margin-bottom: 1.25rem;
    color: var(--color-white);
}

.footer-links {
    list-style: none;
    padding: 0;
}

.footer-links li {
    margin-bottom: 0.75rem;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--color-quaternary);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 2rem;
    text-align: center;
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.95rem;
}

.cookie-notice {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--color-white);
    border-top: 1px solid rgba(90, 17, 40, 0.1);
    box-shadow: 0 -4px 24px rgba(0, 0, 0, 0.1);
    padding: 1.5rem 0;
    z-index: 9999;
    display: none;
    opacity: 0;
    transform: translateY(100%);
    transition: all 0.3s ease;
}

.cookie-notice.show {
    opacity: 1;
    transform: translateY(0);
}

.cookie-notice.hide {
    opacity: 0;
    transform: translateY(100%);
}

.cookie-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 2rem;
}

.cookie-text {
    flex: 1;
}

.cookie-text p {
    margin: 0;
    color: var(--color-dark);
    font-size: 0.95rem;
}

.cookie-text a {
    color: var(--color-tertiary);
    text-decoration: none;
}

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

.cookie-actions {
    display: flex;
    gap: 1rem;
}

.btn-cookie {
    padding: 0.75rem 1.75rem;
    border-radius: 8px;
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    transition: var(--transition);
    border: none;
}

.btn-accept {
    background: linear-gradient(135deg, var(--color-tertiary), var(--color-secondary));
    color: var(--color-white);
}

.btn-accept:hover {
    box-shadow: 0 4px 16px rgba(180, 26, 88, 0.3);
}

.btn-decline {
    background: transparent;
    border: 1px solid rgba(90, 17, 40, 0.2);
    color: var(--color-dark);
}

.btn-decline:hover {
    background: var(--color-gray-light);
}

@media (max-width: 1024px) {
    .hero-content h1 {
        font-size: 2.75rem;
    }

    .problem-cols,
    .explainability-grid,
    .checklist-grid,
    .integration-grid,
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 3rem;
    }

    .problem-divider {
        display: none;
    }

    .stats-grid {
        grid-template-columns: 1fr;
    }

    .footer-content {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .navbar-nav {
        flex-direction: column;
        gap: 1.5rem;
        padding: 2rem 0;
    }

    .hero-section {
        padding: 10rem 0 6rem;
    }

    .hero-content h1 {
        font-size: 2.25rem;
    }

    .section-title {
        font-size: 2rem;
    }

    .process-strip {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .process-output {
        text-align: left;
    }

    .footer-content {
        grid-template-columns: 1fr;
    }

    .cookie-content {
        flex-direction: column;
        align-items: stretch;
    }

    .cookie-actions {
        flex-direction: column;
    }
}