/* ============================================
   PROGRAMMATICA - Design System CSS v2.0
   Restyling: grafica moderna + usabilita
   ============================================ */

/* --- CSS Custom Properties --- */
:root {
    /* Colors - palette raffinata */
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --primary-light: #3b82f6;
    --primary-50: #eff6ff;
    --primary-100: #dbeafe;
    --primary-900: #1e3a5f;

    --secondary: #7c3aed;
    --secondary-dark: #6d28d9;
    --secondary-light: #8b5cf6;

    --accent-green: #10b981;
    --accent-orange: #f59e0b;
    --accent-red: #ef4444;

    --gray-50: #f8fafc;
    --gray-100: #f1f5f9;
    --gray-200: #e2e8f0;
    --gray-300: #cbd5e1;
    --gray-400: #94a3b8;
    --gray-500: #64748b;
    --gray-600: #475569;
    --gray-700: #334155;
    --gray-800: #1e293b;
    --gray-900: #0f172a;

    --white: #ffffff;
    --black: #000000;

    /* Typography */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

    --text-xs: 0.75rem;
    --text-sm: 0.875rem;
    --text-base: 1rem;
    --text-lg: 1.125rem;
    --text-xl: 1.25rem;
    --text-2xl: 1.5rem;
    --text-3xl: 1.875rem;
    --text-4xl: 2.25rem;
    --text-5xl: 3rem;
    --text-6xl: 3.75rem;

    /* Spacing */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    --space-16: 4rem;
    --space-20: 5rem;
    --space-24: 6rem;

    /* Borders */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --radius-full: 9999px;

    /* Shadows - piu morbide e con colore */
    --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.04), 0 1px 2px rgba(15, 23, 42, 0.06);
    --shadow-md: 0 4px 12px rgba(15, 23, 42, 0.06), 0 2px 6px rgba(15, 23, 42, 0.04);
    --shadow-lg: 0 12px 24px rgba(15, 23, 42, 0.08), 0 4px 8px rgba(15, 23, 42, 0.04);
    --shadow-xl: 0 20px 40px rgba(15, 23, 42, 0.1), 0 8px 16px rgba(15, 23, 42, 0.06);
    --shadow-2xl: 0 32px 64px rgba(15, 23, 42, 0.14);
    --shadow-glow: 0 0 24px rgba(37, 99, 235, 0.25);
    --shadow-card: 0 1px 3px rgba(15, 23, 42, 0.04), 0 4px 12px rgba(15, 23, 42, 0.04);
    --shadow-card-hover: 0 12px 32px rgba(15, 23, 42, 0.1), 0 4px 12px rgba(15, 23, 42, 0.06);

    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 400ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-bounce: 500ms cubic-bezier(0.34, 1.56, 0.64, 1);

    /* Layout */
    --container-max: 1200px;
    --header-height: 80px;
}

/* --- Reset & Base --- */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-sans);
    font-size: var(--text-base);
    line-height: 1.7;
    color: var(--gray-700);
    background-color: var(--white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    color: var(--primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--primary-dark);
}

ul, ol {
    list-style: none;
}

h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    color: var(--gray-900);
    letter-spacing: -0.02em;
}

h1 { font-size: var(--text-5xl); }
h2 { font-size: var(--text-4xl); }
h3 { font-size: var(--text-2xl); }
h4 { font-size: var(--text-xl); }

p {
    margin-bottom: var(--space-4);
    color: var(--gray-600);
}

/* --- Utilities --- */
.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--space-6);
}

.text-primary { color: var(--primary); }
.text-secondary { color: var(--secondary); }
.text-center { text-align: center; }

.section {
    padding: var(--space-24) 0;
    position: relative;
}

.section--gray {
    background-color: var(--gray-50);
}

.section--dark {
    background-color: var(--gray-900);
    color: var(--white);
}

.section--dark h2,
.section--dark h3,
.section--dark h4 {
    color: var(--white);
}

.section--dark p {
    color: var(--gray-300);
}

.section__header {
    text-align: center;
    margin-bottom: var(--space-16);
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.section__header h2 {
    margin-bottom: var(--space-4);
}

.section__header p {
    font-size: var(--text-lg);
    color: var(--gray-500);
    line-height: 1.7;
}

.section__badge {
    display: inline-block;
    padding: var(--space-2) var(--space-5);
    background: linear-gradient(135deg, var(--primary-50), rgba(124, 58, 237, 0.06));
    color: var(--primary);
    border-radius: var(--radius-full);
    font-size: var(--text-sm);
    font-weight: 600;
    margin-bottom: var(--space-4);
    letter-spacing: 0.05em;
    text-transform: uppercase;
    border: 1px solid rgba(37, 99, 235, 0.12);
}

/* --- Divider decorativo tra sezioni --- */
.section--gray + .section:not(.section--gray):not(.section--dark)::before,
.section:not(.section--gray):not(.section--dark) + .section--gray::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    border-radius: var(--radius-full);
}

/* --- Buttons --- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-6);
    font-size: var(--text-base);
    font-weight: 600;
    border-radius: var(--radius-xl);
    border: 2px solid transparent;
    cursor: pointer;
    transition: all var(--transition-base);
    text-decoration: none;
    white-space: nowrap;
    font-family: var(--font-sans);
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(255,255,255,0.15), transparent);
    opacity: 0;
    transition: opacity var(--transition-fast);
}

.btn:hover::before {
    opacity: 1;
}

.btn--primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: var(--white);
    border-color: var(--primary);
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.25);
}

.btn--primary:hover {
    background: linear-gradient(135deg, var(--primary-light), var(--primary));
    border-color: var(--primary-light);
    color: var(--white);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(37, 99, 235, 0.35);
}

.btn--outline {
    background: transparent;
    color: var(--primary);
    border-color: var(--primary);
}

.btn--outline:hover {
    background: var(--primary);
    color: var(--white);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.25);
}

.btn--white {
    background: var(--white);
    color: var(--primary);
    border-color: var(--white);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.btn--white:hover {
    background: var(--gray-50);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
}

.btn--ghost {
    background: rgba(255, 255, 255, 0.1);
    color: var(--white);
    border-color: rgba(255, 255, 255, 0.3);
    backdrop-filter: blur(8px);
}

.btn--ghost:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.5);
    color: var(--white);
    transform: translateY(-2px);
}

.btn--large {
    padding: var(--space-4) var(--space-10);
    font-size: var(--text-lg);
    border-radius: var(--radius-2xl);
}

.btn__icon {
    width: 20px;
    height: 20px;
    transition: transform var(--transition-base);
}

.btn:hover .btn__icon {
    transform: translateX(4px);
}

/* --- Header / Navigation --- */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    height: var(--header-height);
    transition: all var(--transition-slow);
}

.header--transparent {
    background: transparent;
}

.header--scrolled {
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    box-shadow: 0 1px 0 rgba(15, 23, 42, 0.06), 0 4px 12px rgba(15, 23, 42, 0.04);
}

.navbar {
    height: 100%;
}

.navbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}

.navbar__logo-img {
    height: 48px;
    width: auto;
    transition: opacity var(--transition-fast);
}

.navbar__logo-img--dark {
    display: none;
}

.header--scrolled .navbar__logo-img--white {
    display: none;
}

.header--scrolled .navbar__logo-img--dark {
    display: block;
}

.header:not(.header--transparent):not(.header--scrolled) {
    background: var(--white);
    box-shadow: 0 1px 0 rgba(15, 23, 42, 0.06);
}

.header:not(.header--transparent):not(.header--scrolled) .navbar__logo-img--white {
    display: none;
}

.header:not(.header--transparent):not(.header--scrolled) .navbar__logo-img--dark {
    display: block;
}

.header:not(.header--transparent):not(.header--scrolled) .navbar__link {
    color: var(--gray-700);
}

.navbar__list {
    display: flex;
    align-items: center;
    gap: var(--space-1);
}

.navbar__link {
    display: block;
    padding: var(--space-2) var(--space-4);
    color: rgba(255, 255, 255, 0.9);
    font-weight: 500;
    font-size: var(--text-sm);
    border-radius: var(--radius-lg);
    transition: all var(--transition-fast);
    text-decoration: none;
    position: relative;
}

.header--scrolled .navbar__link {
    color: var(--gray-600);
}

.navbar__link:hover {
    color: var(--primary);
}

.header--scrolled .navbar__link:hover {
    color: var(--primary);
    background: var(--primary-50);
}

.navbar__link--active {
    color: var(--primary) !important;
    font-weight: 600;
}

.navbar__link--active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: var(--space-4);
    right: var(--space-4);
    height: 2px;
    background: var(--primary);
    border-radius: var(--radius-full);
}

.header--transparent .navbar__link:hover {
    color: var(--white);
    background: rgba(255, 255, 255, 0.12);
}

.header--transparent .navbar__link--active {
    color: var(--white) !important;
    background: rgba(255, 255, 255, 0.12);
}

.header--transparent .navbar__link--active::after {
    background: var(--white);
}

.navbar__toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--space-2);
    z-index: 1001;
}

.navbar__toggle-icon {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--white);
    position: relative;
    transition: background var(--transition-fast);
}

.header--scrolled .navbar__toggle-icon,
.header:not(.header--transparent) .navbar__toggle-icon {
    background: var(--gray-800);
}

.navbar__toggle-icon::before,
.navbar__toggle-icon::after {
    content: '';
    position: absolute;
    width: 100%;
    height: 2px;
    background: inherit;
    left: 0;
    transition: transform var(--transition-base);
}

.navbar__toggle-icon::before { top: -7px; }
.navbar__toggle-icon::after { top: 7px; }

/* Mobile nav overlay */
.navbar__menu--mobile {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(15, 23, 42, 0.97);
    backdrop-filter: blur(24px);
    z-index: 999;
    align-items: center;
    justify-content: center;
}

.navbar__menu--mobile.navbar__menu--open {
    display: flex;
}

.navbar__menu--mobile .navbar__list {
    flex-direction: column;
    gap: var(--space-4);
}

.navbar__menu--mobile .navbar__link {
    font-size: var(--text-2xl);
    color: var(--white);
    padding: var(--space-3) var(--space-8);
}

/* --- Hero Section --- */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    overflow: hidden;
    background: linear-gradient(135deg, var(--gray-900) 0%, #0f2847 40%, var(--primary-dark) 100%);
}

.hero__bg {
    position: absolute;
    inset: 0;
    opacity: 0.2;
    background-image:
        radial-gradient(circle at 15% 50%, rgba(37, 99, 235, 0.5) 0%, transparent 45%),
        radial-gradient(circle at 85% 20%, rgba(124, 58, 237, 0.4) 0%, transparent 45%),
        radial-gradient(circle at 50% 90%, rgba(16, 185, 129, 0.3) 0%, transparent 45%);
}

/* Griglia decorativa hero */
.hero::after {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
    background-size: 60px 60px;
    pointer-events: none;
}

.hero__particles {
    position: absolute;
    inset: 0;
    overflow: hidden;
    pointer-events: none;
}

.hero__particle {
    position: absolute;
    width: 4px;
    height: 4px;
    background: rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    animation: float-particle linear infinite;
}

@keyframes float-particle {
    0% { transform: translateY(100vh) rotate(0deg); opacity: 0; }
    10% { opacity: 1; }
    90% { opacity: 1; }
    100% { transform: translateY(-10vh) rotate(720deg); opacity: 0; }
}

.hero .container {
    position: relative;
    z-index: 2;
    padding-top: var(--header-height);
}

.hero__content {
    max-width: 750px;
    padding: var(--space-16) 0;
}

.hero__badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-5);
    background: rgba(37, 99, 235, 0.15);
    border: 1px solid rgba(37, 99, 235, 0.25);
    border-radius: var(--radius-full);
    color: rgba(255, 255, 255, 0.9);
    font-size: var(--text-sm);
    font-weight: 500;
    margin-bottom: var(--space-8);
    backdrop-filter: blur(8px);
}

.hero__badge-dot {
    width: 8px;
    height: 8px;
    background: var(--accent-green);
    border-radius: 50%;
    animation: pulse-dot 2s infinite;
    box-shadow: 0 0 8px rgba(16, 185, 129, 0.5);
}

@keyframes pulse-dot {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(1.5); }
}

.hero__title {
    font-size: clamp(var(--text-4xl), 5vw, var(--text-6xl));
    font-weight: 800;
    color: var(--white);
    margin-bottom: var(--space-6);
    line-height: 1.08;
    letter-spacing: -0.03em;
}

.hero__title-accent {
    background: linear-gradient(135deg, #60a5fa, #a78bfa, #818cf8);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero__subtitle {
    font-size: var(--text-xl);
    color: rgba(255, 255, 255, 0.65);
    margin-bottom: var(--space-10);
    max-width: 560px;
    line-height: 1.7;
}

.hero__cta {
    display: flex;
    gap: var(--space-4);
    flex-wrap: wrap;
}

.hero__stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-8);
    margin-top: var(--space-16);
    padding-top: var(--space-10);
    border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.hero__stat {
    text-align: center;
}

.hero__stat-number {
    font-size: var(--text-4xl);
    font-weight: 800;
    color: var(--white);
    line-height: 1;
    margin-bottom: var(--space-2);
    letter-spacing: -0.02em;
}

.hero__stat-label {
    font-size: var(--text-sm);
    color: rgba(255, 255, 255, 0.45);
    font-weight: 500;
}

/* --- Feature Cards (Homepage) --- */
.features-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-6);
}

.feature-card {
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-2xl);
    padding: var(--space-8);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition-slow);
}

.feature-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-card-hover);
    border-color: var(--gray-100);
}

.feature-card:hover::before {
    transform: scaleX(1);
}

.feature-card__icon {
    width: 52px;
    height: 52px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-xl);
    margin-bottom: var(--space-5);
    transition: transform var(--transition-bounce);
}

.feature-card:hover .feature-card__icon {
    transform: scale(1.1);
}

.feature-card__icon--blue { background: var(--primary-50); color: var(--primary); }
.feature-card__icon--purple { background: #f3e8ff; color: var(--secondary); }
.feature-card__icon--green { background: #d1fae5; color: var(--accent-green); }
.feature-card__icon--orange { background: #fef3c7; color: var(--accent-orange); }

.feature-card__icon svg {
    width: 26px;
    height: 26px;
}

.feature-card__title {
    font-size: var(--text-lg);
    margin-bottom: var(--space-3);
}

.feature-card__desc {
    font-size: var(--text-sm);
    color: var(--gray-500);
    margin-bottom: var(--space-5);
    line-height: 1.6;
}

.feature-card__link {
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--primary);
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    transition: gap var(--transition-fast);
}

.feature-card:hover .feature-card__link {
    gap: var(--space-3);
}

.feature-card__link svg {
    width: 16px;
    height: 16px;
    transition: transform var(--transition-fast);
}

.feature-card:hover .feature-card__link svg {
    transform: translateX(2px);
}

/* --- About Section --- */
.about__grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-16);
    align-items: center;
}

.about__content h3 {
    margin-bottom: var(--space-4);
}

.about__content p {
    font-size: var(--text-lg);
    line-height: 1.8;
}

.about__image {
    position: relative;
    border-radius: var(--radius-2xl);
    overflow: hidden;
    aspect-ratio: 4/3;
    background: linear-gradient(135deg, var(--primary-50), #ede9fe);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-lg);
}

.about__image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.about__image:hover img {
    transform: scale(1.03);
}

.about__image-placeholder {
    text-align: center;
    padding: var(--space-8);
}

.about__image-placeholder svg {
    width: 120px;
    height: 120px;
    color: var(--primary);
    opacity: 0.3;
    margin-bottom: var(--space-4);
}

.about__values {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-6);
    margin-top: var(--space-8);
}

.about__value {
    padding: var(--space-5);
    background: var(--white);
    border-radius: var(--radius-xl);
    border-left: 3px solid var(--primary);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
}

.about__value:hover {
    box-shadow: var(--shadow-md);
    transform: translateX(4px);
}

.about__value h4 {
    font-size: var(--text-base);
    margin-bottom: var(--space-2);
}

.about__value p {
    font-size: var(--text-sm);
    margin-bottom: 0;
    line-height: 1.6;
}

/* --- Services Section --- */
.services-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-8);
}

.service-card {
    background: var(--white);
    border-radius: var(--radius-2xl);
    overflow: hidden;
    box-shadow: var(--shadow-card);
    transition: all var(--transition-base);
    display: flex;
    flex-direction: column;
    border: 1px solid var(--gray-100);
}

.service-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-card-hover);
    border-color: transparent;
}

.service-card__image {
    height: 200px;
    overflow: hidden;
    position: relative;
}

.service-card__image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.service-card:hover .service-card__image img {
    transform: scale(1.05);
}

.service-card__image-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 4rem;
    transition: all var(--transition-slow);
}

.service-card:hover .service-card__image-placeholder {
    transform: scale(1.03);
}

.service-card__image-placeholder--blue { background: linear-gradient(135deg, #dbeafe, #bfdbfe); }
.service-card__image-placeholder--purple { background: linear-gradient(135deg, #ede9fe, #ddd6fe); }
.service-card__image-placeholder--green { background: linear-gradient(135deg, #d1fae5, #a7f3d0); }
.service-card__image-placeholder--orange { background: linear-gradient(135deg, #fef3c7, #fde68a); }

.service-card__body {
    padding: var(--space-8);
    flex: 1;
    display: flex;
    flex-direction: column;
}

.service-card__title {
    font-size: var(--text-xl);
    margin-bottom: var(--space-3);
}

.service-card__desc {
    font-size: var(--text-sm);
    flex: 1;
    margin-bottom: var(--space-5);
    line-height: 1.7;
}

.service-card__tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
    margin-bottom: var(--space-5);
}

.service-tag {
    padding: var(--space-1) var(--space-3);
    background: var(--gray-50);
    color: var(--gray-600);
    border-radius: var(--radius-full);
    font-size: var(--text-xs);
    font-weight: 500;
    border: 1px solid var(--gray-200);
    transition: all var(--transition-fast);
}

.service-card:hover .service-tag {
    background: var(--primary-50);
    color: var(--primary);
    border-color: var(--primary-100);
}

.service-card__link {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    font-weight: 600;
    font-size: var(--text-sm);
    transition: gap var(--transition-fast);
}

.service-card:hover .service-card__link {
    gap: var(--space-3);
}

.service-card__link svg {
    width: 16px;
    height: 16px;
    transition: transform var(--transition-fast);
}

.service-card:hover .service-card__link svg {
    transform: translateX(2px);
}

/* --- Service Detail Page --- */
.service-hero {
    padding: calc(var(--header-height) + var(--space-20)) 0 var(--space-16);
    position: relative;
    overflow: hidden;
}

.service-hero::after {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(255,255,255,0.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.04) 1px, transparent 1px);
    background-size: 50px 50px;
    pointer-events: none;
}

.service-hero--blue { background: linear-gradient(135deg, #0f2847, var(--primary-dark)); }
.service-hero--purple { background: linear-gradient(135deg, #2d1354, var(--secondary-dark)); }
.service-hero--green { background: linear-gradient(135deg, #052e16, #059669); }
.service-hero--orange { background: linear-gradient(135deg, #451a03, #d97706); }

.service-hero .container {
    position: relative;
    z-index: 1;
}

.service-hero h1 {
    color: var(--white);
    margin-bottom: var(--space-4);
}

.service-hero p {
    color: rgba(255, 255, 255, 0.75);
    font-size: var(--text-xl);
    max-width: 600px;
    line-height: 1.7;
}

.service-features {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-6);
}

.service-feature-item {
    display: flex;
    gap: var(--space-5);
    padding: var(--space-6) var(--space-8);
    background: var(--white);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-card);
    border: 1px solid var(--gray-100);
    transition: all var(--transition-base);
}

.service-feature-item:hover {
    box-shadow: var(--shadow-card-hover);
    border-color: transparent;
    transform: translateY(-3px);
}

.service-feature-item__icon {
    width: 48px;
    height: 48px;
    min-width: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary-50);
    border-radius: var(--radius-lg);
    color: var(--primary);
    transition: transform var(--transition-bounce);
}

.service-feature-item:hover .service-feature-item__icon {
    transform: scale(1.1);
}

.service-feature-item__icon svg {
    width: 24px;
    height: 24px;
}

.service-feature-item h4 {
    font-size: var(--text-base);
    margin-bottom: var(--space-2);
}

.service-feature-item p {
    font-size: var(--text-sm);
    margin-bottom: 0;
    line-height: 1.6;
}

.tech-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-3);
    margin-top: var(--space-4);
}

.tech-tag {
    padding: var(--space-2) var(--space-5);
    background: var(--white);
    color: var(--primary-dark);
    border-radius: var(--radius-full);
    font-size: var(--text-sm);
    font-weight: 500;
    border: 1px solid var(--primary-100);
    transition: all var(--transition-fast);
    cursor: default;
}

.tech-tag:hover {
    background: var(--primary-50);
    border-color: var(--primary);
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(37, 99, 235, 0.1);
}

/* --- Research Section --- */
.research-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-6);
}

.research-card {
    text-align: center;
    padding: var(--space-8);
    background: var(--white);
    border-radius: var(--radius-2xl);
    border: 1px solid var(--gray-200);
    transition: all var(--transition-base);
}

.research-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-card-hover);
    border-color: transparent;
}

.research-card__icon {
    width: 68px;
    height: 68px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-50), #ede9fe);
    border-radius: var(--radius-xl);
    margin: 0 auto var(--space-5);
    color: var(--primary);
    transition: transform var(--transition-bounce);
}

.research-card:hover .research-card__icon {
    transform: scale(1.1) rotate(5deg);
}

.research-card__icon svg {
    width: 32px;
    height: 32px;
}

.research-card h3 {
    font-size: var(--text-lg);
    margin-bottom: var(--space-3);
}

.research-card p {
    font-size: var(--text-sm);
    margin-bottom: 0;
    line-height: 1.6;
}

/* --- Contact Section --- */
.contact-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-8);
    margin-bottom: var(--space-16);
}

.contact-card {
    text-align: center;
    padding: var(--space-10) var(--space-8);
    background: var(--white);
    border-radius: var(--radius-2xl);
    border: 1px solid var(--gray-200);
    transition: all var(--transition-base);
}

.contact-card:hover {
    box-shadow: var(--shadow-card-hover);
    border-color: transparent;
    transform: translateY(-4px);
}

.contact-card__icon {
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-50), rgba(124, 58, 237, 0.06));
    border-radius: var(--radius-2xl);
    margin: 0 auto var(--space-6);
    color: var(--primary);
    transition: transform var(--transition-bounce);
}

.contact-card:hover .contact-card__icon {
    transform: scale(1.1);
}

.contact-card__icon svg {
    width: 28px;
    height: 28px;
}

.contact-card h3 {
    font-size: var(--text-lg);
    margin-bottom: var(--space-3);
}

.contact-card p {
    font-size: var(--text-sm);
    color: var(--gray-500);
    margin-bottom: var(--space-2);
}

.contact-card a {
    font-weight: 600;
    font-size: var(--text-sm);
}

.contact__cta {
    text-align: center;
    padding: var(--space-16) var(--space-12);
    background: linear-gradient(135deg, var(--primary), #4f46e5, var(--secondary));
    border-radius: var(--radius-2xl);
    color: var(--white);
    position: relative;
    overflow: hidden;
}

.contact__cta::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
        radial-gradient(circle at 20% 50%, rgba(255,255,255,0.08) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(255,255,255,0.06) 0%, transparent 50%);
    pointer-events: none;
}

.contact__cta h3 {
    color: var(--white);
    margin-bottom: var(--space-3);
    position: relative;
    font-size: var(--text-2xl);
}

.contact__cta p {
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: var(--space-8);
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
    position: relative;
}

/* --- Contact Form --- */
.contact-form {
    max-width: 600px;
    margin: 0 auto;
}

.form-group {
    margin-bottom: var(--space-5);
}

.form-group label {
    display: block;
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--gray-700);
    margin-bottom: var(--space-2);
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: var(--space-3) var(--space-4);
    border: 1px solid var(--gray-300);
    border-radius: var(--radius-lg);
    font-size: var(--text-base);
    font-family: var(--font-sans);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
    background: var(--white);
    color: var(--gray-800);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

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

.form-group--error input,
.form-group--error textarea {
    border-color: var(--accent-red);
}

.form-error {
    display: block;
    color: var(--accent-red);
    font-size: var(--text-xs);
    margin-top: var(--space-1);
}

/* --- Footer --- */
.footer {
    background: var(--gray-900);
    color: var(--gray-400);
    padding: var(--space-20) 0 0;
    position: relative;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(37, 99, 235, 0.3), rgba(124, 58, 237, 0.3), transparent);
}

.footer__top {
    display: grid;
    grid-template-columns: 1.5fr 2fr;
    gap: var(--space-16);
    padding-bottom: var(--space-12);
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.footer__logo-img {
    height: 36px;
    width: auto;
    margin-bottom: var(--space-5);
}

.footer__tagline {
    font-size: var(--text-sm);
    color: var(--gray-400);
    max-width: 300px;
    margin-bottom: var(--space-6);
    line-height: 1.7;
}

.footer__social {
    display: flex;
    gap: var(--space-3);
}

.footer__social a {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-lg);
    background: rgba(255, 255, 255, 0.05);
    color: var(--gray-400);
    transition: all var(--transition-base);
    border: 1px solid rgba(255, 255, 255, 0.06);
}

.footer__social a:hover {
    background: var(--primary);
    color: var(--white);
    border-color: var(--primary);
    transform: translateY(-2px);
}

.footer__social a svg {
    width: 18px;
    height: 18px;
}

.footer__links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-8);
}

.footer__column h4 {
    color: var(--white);
    font-size: var(--text-sm);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: var(--space-5);
}

.footer__column li {
    margin-bottom: var(--space-3);
}

.footer__column a {
    color: var(--gray-400);
    font-size: var(--text-sm);
    transition: all var(--transition-fast);
}

.footer__column a:hover {
    color: var(--white);
    padding-left: var(--space-2);
}

.footer__bottom {
    padding: var(--space-6) 0;
    text-align: center;
    font-size: var(--text-sm);
}

.footer__bottom a {
    color: var(--gray-400);
    transition: color var(--transition-fast);
}

.footer__bottom a:hover {
    color: var(--primary-light);
}

/* --- Chatbot Widget --- */
.chatbot-toggle {
    position: fixed;
    bottom: 24px;
    right: 24px;
    width: 60px;
    height: 60px;
    border-radius: var(--radius-2xl);
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: var(--white);
    border: 3px solid var(--white);
    cursor: pointer;
    box-shadow: 0 8px 24px rgba(37, 99, 235, 0.4), 0 0 0 1px rgba(0, 0, 0, 0.08);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 900;
    transition: all var(--transition-base);
    animation: chatbot-pulse 3s ease-in-out infinite;
}

@keyframes chatbot-pulse {
    0%, 100% { box-shadow: 0 8px 24px rgba(37, 99, 235, 0.4), 0 0 0 1px rgba(0, 0, 0, 0.08); }
    50% { box-shadow: 0 8px 32px rgba(37, 99, 235, 0.6), 0 0 0 6px rgba(37, 99, 235, 0.12); }
}

.chatbot-toggle--active {
    animation: none;
}

.chatbot-toggle:hover {
    transform: scale(1.08) translateY(-2px);
    box-shadow: 0 12px 32px rgba(37, 99, 235, 0.5), 0 0 0 1px rgba(0, 0, 0, 0.08);
    animation: none;
}

/* Bubble "Serve aiuto?" */
.chatbot-bubble {
    position: fixed;
    bottom: 92px;
    right: 24px;
    background: var(--white);
    color: var(--gray-800);
    padding: 10px 16px;
    border-radius: var(--radius-lg);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.12), 0 0 0 1px rgba(0, 0, 0, 0.05);
    font-size: 0.9rem;
    font-weight: 600;
    font-family: var(--font-sans);
    z-index: 901;
    opacity: 0;
    transform: translateY(8px) scale(0.95);
    pointer-events: none;
    transition: opacity 0.3s ease, transform 0.3s ease;
    white-space: nowrap;
}

.chatbot-bubble::after {
    content: '';
    position: absolute;
    bottom: -6px;
    right: 22px;
    width: 12px;
    height: 12px;
    background: var(--white);
    transform: rotate(45deg);
    box-shadow: 2px 2px 4px rgba(0, 0, 0, 0.06);
}

.chatbot-bubble--visible {
    opacity: 1;
    transform: translateY(0) scale(1);
    pointer-events: auto;
}

.chatbot-bubble__close {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 18px;
    height: 18px;
    margin-left: 8px;
    border: none;
    background: var(--gray-200);
    color: var(--gray-600);
    border-radius: 50%;
    font-size: 0.7rem;
    cursor: pointer;
    line-height: 1;
    padding: 0;
    vertical-align: middle;
    transition: background 0.2s;
}

.chatbot-bubble__close:hover {
    background: var(--gray-300);
}

.chatbot-toggle__label {
    font-family: var(--font-sans);
    font-size: 1.25rem;
    font-weight: 800;
    letter-spacing: -0.02em;
    line-height: 1;
}

.chatbot-toggle svg {
    width: 24px;
    height: 24px;
}

.chatbot-window {
    position: fixed;
    bottom: 100px;
    right: 24px;
    width: 400px;
    height: 520px;
    background: var(--white);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-2xl);
    z-index: 899;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    opacity: 0;
    transform: translateY(20px) scale(0.95);
    pointer-events: none;
    transition: all var(--transition-base);
    border: 1px solid var(--gray-100);
}

.chatbot-window--open {
    opacity: 1;
    transform: translateY(0) scale(1);
    pointer-events: auto;
}

.chatbot__header {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: var(--white);
    padding: var(--space-4) var(--space-5);
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.chatbot__avatar {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
}

.chatbot__avatar-label {
    font-family: var(--font-sans);
    font-size: 1rem;
    font-weight: 800;
    letter-spacing: -0.02em;
    color: var(--white);
}

.chatbot__avatar svg {
    width: 22px;
    height: 22px;
}

.chatbot__header-info h4 {
    color: var(--white);
    font-size: var(--text-sm);
    margin-bottom: 2px;
}

.chatbot__header-info span {
    font-size: var(--text-xs);
    color: rgba(255, 255, 255, 0.7);
}

.chatbot__clear {
    margin-left: auto;
    background: none;
    border: none;
    color: rgba(255, 255, 255, 0.5);
    cursor: pointer;
    padding: 4px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: color 0.2s, background 0.2s;
}

.chatbot__clear svg {
    width: 18px;
    height: 18px;
}

.chatbot__clear:hover {
    color: var(--white);
    background: rgba(255, 255, 255, 0.15);
}

.chatbot__messages {
    flex: 1;
    overflow-y: auto;
    padding: var(--space-4);
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.chatbot__message {
    max-width: 85%;
    padding: var(--space-3) var(--space-4);
    border-radius: var(--radius-xl);
    font-size: var(--text-sm);
    line-height: 1.5;
    animation: messageSlide 0.3s ease;
}

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

.chatbot__message--bot {
    background: var(--gray-50);
    color: var(--gray-800);
    align-self: flex-start;
    border-bottom-left-radius: var(--radius-sm);
}

.chatbot__message--bot strong {
    font-weight: 600;
    color: var(--gray-900);
}

.chatbot__message--bot em {
    font-style: italic;
}

.chatbot__message--bot a {
    color: var(--primary);
    text-decoration: underline;
    text-underline-offset: 2px;
    font-weight: 500;
}

.chatbot__message--bot a:hover {
    color: var(--primary-dark);
}

.chatbot__message--bot ul {
    margin: 1px 0;
    padding-left: 14px;
    list-style: disc;
}

.chatbot__message--bot ul li {
    margin: 0;
    padding: 0;
    line-height: 1.15;
}

.chatbot__message--bot p,
.chatbot__message--bot br {
    margin: 0;
    line-height: 1.3;
}

.chatbot__message--bot br + br {
    display: none;
}

.chatbot__message--user {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: var(--white);
    align-self: flex-end;
    border-bottom-right-radius: var(--radius-sm);
}

.chatbot__message--typing {
    display: flex;
    gap: 4px;
    padding: var(--space-3) var(--space-5);
}

.chatbot__typing-dot {
    width: 8px;
    height: 8px;
    background: var(--gray-400);
    border-radius: 50%;
    animation: typingBounce 1.4s infinite ease-in-out;
}

.chatbot__typing-dot:nth-child(2) { animation-delay: 0.2s; }
.chatbot__typing-dot:nth-child(3) { animation-delay: 0.4s; }

@keyframes typingBounce {
    0%, 60%, 100% { transform: translateY(0); }
    30% { transform: translateY(-6px); }
}

.chatbot__input {
    display: flex;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-4);
    border-top: 1px solid var(--gray-100);
    background: var(--white);
}

.chatbot__input input {
    flex: 1;
    padding: var(--space-3) var(--space-4);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-full);
    font-size: var(--text-sm);
    font-family: var(--font-sans);
    outline: none;
    transition: border-color var(--transition-fast);
}

.chatbot__input input:focus {
    border-color: var(--primary);
}

.chatbot__input button {
    width: 42px;
    height: 42px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: var(--white);
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
    flex-shrink: 0;
}

.chatbot__input button:hover {
    transform: scale(1.05);
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

.chatbot__input button:disabled {
    background: var(--gray-300);
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

.chatbot__input button svg {
    width: 18px;
    height: 18px;
}

/* --- CTA Banner --- */
.cta-banner {
    background: linear-gradient(135deg, var(--primary), #4f46e5, var(--secondary));
    padding: var(--space-20) 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.cta-banner::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
        radial-gradient(circle at 30% 50%, rgba(255,255,255,0.06) 0%, transparent 50%),
        radial-gradient(circle at 70% 30%, rgba(255,255,255,0.04) 0%, transparent 50%);
    pointer-events: none;
}

.cta-banner h2 {
    color: var(--white);
    margin-bottom: var(--space-4);
    position: relative;
}

.cta-banner p {
    color: rgba(255, 255, 255, 0.8);
    font-size: var(--text-lg);
    max-width: 550px;
    margin: 0 auto var(--space-8);
    position: relative;
}

.cta-banner__buttons {
    display: flex;
    gap: var(--space-4);
    justify-content: center;
    flex-wrap: wrap;
    position: relative;
}

/* --- Cookie Popup --- */
.cookie-popup {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 2000;
    padding: var(--space-4);
    transform: translateY(100%);
    transition: transform var(--transition-slow);
}

.cookie-popup--visible {
    transform: translateY(0);
}

.cookie-popup__container {
    max-width: 600px;
    margin: 0 auto;
    background: var(--white);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-2xl);
    padding: var(--space-8);
    border: 1px solid var(--gray-100);
}

.cookie-popup h3 {
    font-size: var(--text-lg);
    margin-bottom: var(--space-3);
}

.cookie-popup p {
    font-size: var(--text-sm);
    margin-bottom: var(--space-5);
    line-height: 1.6;
}

.cookie-popup__actions {
    display: flex;
    gap: var(--space-3);
    flex-wrap: wrap;
}

.cookie-popup__button {
    padding: var(--space-2) var(--space-5);
    border-radius: var(--radius-lg);
    font-size: var(--text-sm);
    font-weight: 600;
    cursor: pointer;
    border: 1px solid var(--gray-300);
    background: var(--white);
    color: var(--gray-700);
    font-family: var(--font-sans);
    transition: all var(--transition-fast);
}

.cookie-popup__button:hover {
    background: var(--gray-50);
    border-color: var(--gray-400);
}

.cookie-popup__button--accept {
    background: var(--primary);
    color: var(--white);
    border-color: var(--primary);
}

.cookie-popup__button--accept:hover {
    background: var(--primary-dark);
}

/* --- Cookie Settings Modal --- */
.cookie-settings {
    position: fixed;
    inset: 0;
    z-index: 2100;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(15, 23, 42, 0.5);
    backdrop-filter: blur(8px);
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-base);
}

.cookie-settings--visible {
    opacity: 1;
    pointer-events: auto;
}

.cookie-settings__modal {
    background: var(--white);
    border-radius: var(--radius-2xl);
    max-width: 500px;
    width: 90%;
    max-height: 80vh;
    overflow-y: auto;
    padding: var(--space-8);
}

.cookie-settings__header h2 {
    font-size: var(--text-xl);
    margin-bottom: var(--space-2);
}

.cookie-settings__header p {
    font-size: var(--text-sm);
    margin-bottom: var(--space-6);
}

.cookie-settings__category {
    padding: var(--space-4) 0;
    border-top: 1px solid var(--gray-200);
}

.cookie-settings__category h3 {
    font-size: var(--text-base);
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-2);
}

.cookie-settings__category p {
    font-size: var(--text-xs);
    color: var(--gray-500);
    margin-bottom: 0;
}

.cookie-settings__toggle {
    position: relative;
    display: inline-block;
    width: 44px;
    height: 24px;
}

.cookie-settings__toggle input {
    opacity: 0;
    width: 0;
    height: 0;
}

.cookie-settings__toggle__slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--gray-300);
    border-radius: var(--radius-full);
    transition: background var(--transition-fast);
}

.cookie-settings__toggle__slider::before {
    content: '';
    position: absolute;
    height: 18px;
    width: 18px;
    left: 3px;
    bottom: 3px;
    background: var(--white);
    border-radius: 50%;
    transition: transform var(--transition-fast);
}

.cookie-settings__toggle input:checked + .cookie-settings__toggle__slider {
    background: var(--primary);
}

.cookie-settings__toggle input:checked + .cookie-settings__toggle__slider::before {
    transform: translateX(20px);
}

.cookie-settings__footer {
    display: flex;
    gap: var(--space-3);
    justify-content: flex-end;
    margin-top: var(--space-6);
    padding-top: var(--space-4);
    border-top: 1px solid var(--gray-200);
}

/* --- Scroll Animations --- */
.reveal {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.7s cubic-bezier(0.4, 0, 0.2, 1), transform 0.7s cubic-bezier(0.4, 0, 0.2, 1);
}

.reveal--visible {
    opacity: 1;
    transform: translateY(0);
}

.reveal--delay-1 { transition-delay: 0.1s; }
.reveal--delay-2 { transition-delay: 0.2s; }
.reveal--delay-3 { transition-delay: 0.3s; }
.reveal--delay-4 { transition-delay: 0.4s; }

/* --- Page Header (for inner pages) --- */
.page-header {
    padding: calc(var(--header-height) + var(--space-20)) 0 var(--space-16);
    background: linear-gradient(135deg, var(--gray-900) 0%, #0f2847 100%);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.page-header::after {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
        radial-gradient(circle at 50% 100%, rgba(37, 99, 235, 0.1) 0%, transparent 50%),
        linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
    background-size: 100% 100%, 60px 60px, 60px 60px;
    pointer-events: none;
}

.page-header .container {
    position: relative;
    z-index: 1;
}

.page-header h1 {
    color: var(--white);
    margin-bottom: var(--space-4);
}

.page-header p {
    color: rgba(255, 255, 255, 0.65);
    font-size: var(--text-xl);
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.7;
}

.breadcrumb {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    margin-bottom: var(--space-8);
    font-size: var(--text-sm);
}

.breadcrumb a {
    color: rgba(255, 255, 255, 0.45);
    transition: color var(--transition-fast);
}

.breadcrumb a:hover {
    color: var(--white);
}

.breadcrumb span {
    color: rgba(255, 255, 255, 0.25);
}

.breadcrumb .current {
    color: rgba(255, 255, 255, 0.8);
}

/* --- Back to Top --- */
.back-to-top {
    position: fixed;
    bottom: 100px;
    right: 24px;
    width: 44px;
    height: 44px;
    background: var(--white);
    color: var(--gray-600);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 800;
    opacity: 0;
    transform: translateY(12px);
    pointer-events: none;
    transition: all var(--transition-base);
    box-shadow: var(--shadow-md);
}

.back-to-top--visible {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
}

.back-to-top:hover {
    background: var(--primary);
    color: var(--white);
    border-color: var(--primary);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(37, 99, 235, 0.25);
}

.back-to-top svg {
    width: 20px;
    height: 20px;
}

/* --- Responsive --- */
@media (max-width: 1024px) {
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .research-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .hero__stats {
        grid-template-columns: repeat(2, 1fr);
    }

    .about__grid {
        grid-template-columns: 1fr;
        gap: var(--space-8);
    }

    .footer__top {
        grid-template-columns: 1fr;
        gap: var(--space-8);
    }
}

@media (max-width: 768px) {
    :root {
        --header-height: 64px;
    }

    .section {
        padding: var(--space-16) 0;
    }

    h1 { font-size: var(--text-3xl); }
    h2 { font-size: var(--text-2xl); }

    .navbar__menu {
        display: none;
    }

    .navbar__toggle {
        display: block;
    }

    .features-grid,
    .services-grid,
    .service-features {
        grid-template-columns: 1fr;
    }

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

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

    .hero__stats {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-4);
    }

    .hero__cta {
        flex-direction: column;
    }

    .hero__cta .btn {
        width: 100%;
        justify-content: center;
    }

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

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

    .chatbot-window {
        right: 0;
        bottom: 0;
        left: 0;
        width: 100%;
        height: 100%;
        border-radius: 0;
    }

    .cta-banner__buttons {
        flex-direction: column;
        align-items: center;
    }

    .cta-banner__buttons .btn {
        width: 100%;
        max-width: 320px;
    }

    .contact__cta {
        padding: var(--space-10) var(--space-6);
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--space-4);
    }

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

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

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

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

    .cookie-popup__button {
        width: 100%;
        text-align: center;
    }
}

/* --- Print Styles --- */
@media print {
    .header, .footer, .chatbot-toggle, .chatbot-window, .cookie-popup, .cookie-settings, .back-to-top {
        display: none !important;
    }

    .section {
        padding: 1rem 0;
    }
}