/**
 * KAYROS INGEGNERIA — Layout 2 (Horizontal Narrative)
 * CSS unificato per tutte le pagine
 */

/* ============================================
   BASE
   ============================================ */
* {
  box-sizing: border-box;
}

body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.6;
  color: var(--nero);
  background-color: var(--bianco);
  overflow-x: hidden;
}

a {
  color: inherit;
  text-decoration: none;
}

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

/* ============================================
   UTILITIES
   ============================================ */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-6);
}

.mb-4 { margin-bottom: var(--space-4); }
.mb-6 { margin-bottom: var(--space-6); }
.mb-8 { margin-bottom: var(--space-8); }
.mb-12 { margin-bottom: var(--space-12); }
.mt-4 { margin-top: var(--space-4); }
.mt-8 { margin-top: var(--space-8); }

.text-center { text-align: center; }
.text-sm { font-size: var(--text-sm); }

/* ============================================
   HEADER ORIZZONTALE
   ============================================ */
.header-h {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: 64px;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--grigio-chiaro);
}

.header-h__inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 100%;
  padding: 0 var(--space-8);
  max-width: 1440px;
  margin: 0 auto;
}

.header-h__logo {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: var(--text-lg);
  text-transform: uppercase;
  letter-spacing: 0.02em;
}

.header-h__nav {
  display: flex;
  gap: var(--space-8);
}

.header-h__link {
  font-size: var(--text-sm);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--grigio-medio);
  transition: color var(--transition-fast);
}

.header-h__link:hover,
.header-h__link--active {
  color: var(--brand);
}

.header-h__menu {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: var(--space-2);
  background: none;
  border: none;
}

.header-h__menu span {
  width: 24px;
  height: 2px;
  background: var(--nero);
  transition: all var(--transition-fast);
}

/* Progress Bar */
.progress-bar {
  position: absolute;
  bottom: 0;
  left: 0;
  height: 3px;
  background: var(--brand);
  width: 0%;
  transition: width 0.1s linear;
}

/* Mobile Navigation */
.mobile-nav {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100vh;
  background: var(--bianco);
  z-index: 99;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: var(--space-6);
  transform: translateX(100%);
  visibility: hidden;
  transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1), visibility 0.4s;
}

.mobile-nav--open {
  transform: translateX(0);
  visibility: visible;
}

.mobile-nav__link {
  font-family: var(--font-heading);
  font-size: var(--text-3xl);
  font-weight: 700;
  text-transform: uppercase;
  color: var(--nero);
  transition: color var(--transition-fast);
}

.mobile-nav__link:hover {
  color: var(--brand);
}

@media (max-width: 1024px) {
  .header-h__nav {
    display: none;
  }

  .header-h__menu {
    display: flex;
  }

  .header-h {
    background: var(--bianco);
  }

  .progress-bar {
    display: none;
  }
}

/* ============================================
   SCROLL ORIZZONTALE (Homepage)
   ============================================ */
.horizontal-wrapper {
  width: 100vw;
  height: 100vh;
  overflow-x: auto;
  overflow-y: hidden;
  scrollbar-width: none;
  -ms-overflow-style: none;
}

.horizontal-wrapper::-webkit-scrollbar {
  display: none;
}

.horizontal-container {
  display: flex;
  width: max-content;
  height: 100vh;
  padding-top: 64px;
}

.panel {
  width: 100vw;
  height: calc(100vh - 64px);
  flex-shrink: 0;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
}

.panel__inner {
  width: 100%;
  max-width: 1440px;
  margin: 0 auto;
  padding: var(--space-8);
}

/* Panel Hero */
.panel--hero {
  position: relative;
  color: var(--bianco);
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  background-image: url('https://images.unsplash.com/photo-1541888946425-d81bb19240f5?w=1920&q=80');
  background-size: cover;
  background-position: center;
}

.hero-bg__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    135deg,
    rgba(7, 117, 130, 0.8) 0%,
    rgba(6, 90, 102, 0.85) 40%,
    rgba(4, 71, 80, 0.9) 100%
  );
}

.hero-bg__overlay::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 20% 30%, rgba(15, 217, 240, 0.2) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 70%, rgba(255, 255, 255, 0.05) 0%, transparent 40%);
  pointer-events: none;
}

.hero-bg__overlay::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 30%;
  background: linear-gradient(to top, rgba(3, 46, 51, 0.5), transparent);
  pointer-events: none;
}

.panel--hero .panel__inner {
  position: relative;
  z-index: 1;
}

.hero-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  align-items: center;
  min-height: calc(100vh - 64px);
}

.hero-split__left {
  padding-right: var(--space-8);
}

.hero-split__eyebrow {
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.3em;
  color: var(--brand-chiaro);
  margin-bottom: var(--space-4);
  display: block;
}

.hero-split__title {
  font-family: var(--font-heading);
  font-size: clamp(3rem, 8vw, 7rem);
  font-weight: 700;
  line-height: 0.9;
  text-transform: uppercase;
  letter-spacing: -0.03em;
}

.hero-split__right {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding-left: var(--space-16);
  border-left: 1px solid rgba(255,255,255,0.2);
}

.hero-split__subtitle {
  font-size: var(--text-xl);
  color: var(--grigio-chiaro);
  margin-bottom: var(--space-8);
  max-width: 40ch;
}

.hero-split__cta {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--brand-chiaro);
  font-size: var(--text-sm);
}

.hero-split__cta-arrow {
  width: 40px;
  height: 1px;
  background: var(--brand-chiaro);
  position: relative;
}

.hero-split__cta-arrow::after {
  content: '';
  position: absolute;
  right: 0;
  top: -4px;
  border: solid var(--brand-chiaro);
  border-width: 0 1px 1px 0;
  padding: 4px;
  transform: rotate(-45deg);
}

/* Panel Services */
.panel--services {
  background: var(--bianco);
}

.services-horizontal {
  display: flex;
  gap: var(--space-6);
  padding: var(--space-8) 0;
}

.services-horizontal__intro {
  min-width: 400px;
  padding-right: var(--space-8);
}

.services-horizontal__number {
  font-family: var(--font-heading);
  font-size: clamp(6rem, 12vw, 10rem);
  font-weight: 700;
  color: var(--grigio-chiaro);
  line-height: 0.8;
}

.services-horizontal__title {
  font-family: var(--font-heading);
  font-size: var(--text-4xl);
  font-weight: 700;
  text-transform: uppercase;
  margin-top: var(--space-4);
}

.service-card-h {
  min-width: 350px;
  padding: var(--space-8);
  background: var(--bianco-sporco);
  border: 1px solid var(--grigio-chiaro);
  display: flex;
  flex-direction: column;
  transition: all var(--transition-base);
}

.service-card-h:hover {
  border-color: var(--nero);
  transform: translateY(-8px);
  box-shadow: 0 20px 40px rgba(0,0,0,0.1);
}

.service-card-h__number {
  font-family: var(--font-heading);
  font-size: var(--text-5xl);
  font-weight: 700;
  color: var(--brand);
  opacity: 0.3;
  margin-bottom: var(--space-4);
}

.service-card-h__title {
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  font-weight: 700;
  text-transform: uppercase;
  margin-bottom: var(--space-4);
}

.service-card-h__desc {
  font-size: var(--text-sm);
  color: var(--grigio-medio);
  flex-grow: 1;
}

.service-card-h__link {
  margin-top: var(--space-6);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--brand);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* Panel Projects */
.panel--projects {
  background: var(--nero);
  color: var(--bianco);
}

.projects-horizontal {
  display: flex;
  gap: var(--space-4);
  align-items: stretch;
}

.projects-horizontal__intro {
  min-width: 300px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding-right: var(--space-8);
}

.projects-horizontal__stat {
  margin-bottom: var(--space-12);
}

.projects-horizontal__stat-value {
  font-family: var(--font-heading);
  font-size: var(--text-5xl);
  font-weight: 700;
  color: var(--brand-chiaro);
}

.projects-horizontal__stat-label {
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--grigio-chiaro);
}

.projects-horizontal__title {
  font-family: var(--font-heading);
  font-size: var(--text-3xl);
  font-weight: 700;
  text-transform: uppercase;
}

.project-slide {
  min-width: 500px;
  height: 70vh;
  position: relative;
  overflow: hidden;
}

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

.project-slide:hover .project-slide__image {
  transform: scale(1.05);
}

.project-slide__content {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: var(--space-8);
  background: linear-gradient(to top, rgba(10,10,10,0.95), transparent);
}

.project-slide__tag {
  display: inline-block;
  padding: var(--space-1) var(--space-3);
  background: var(--brand);
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--space-3);
}

.project-slide__title {
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  font-weight: 700;
}

.project-slide__location {
  font-size: var(--text-sm);
  color: var(--grigio-chiaro);
  margin-top: var(--space-2);
}

/* Panel Stats */
.panel--stats {
  background: var(--brand-profondo);
  color: var(--bianco);
}

.stats-horizontal {
  display: flex;
  gap: var(--space-16);
  align-items: center;
}

.stats-horizontal__title {
  min-width: 400px;
  font-family: var(--font-heading);
  font-size: clamp(2rem, 5vw, 4rem);
  font-weight: 700;
  text-transform: uppercase;
  line-height: 1;
}

.stats-horizontal__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-12);
}

.stat-h {
  text-align: center;
  padding: var(--space-8);
  border: 1px solid rgba(255,255,255,0.1);
}

.stat-h__value {
  font-family: var(--font-heading);
  font-size: var(--text-5xl);
  font-weight: 700;
  line-height: 1;
}

.stat-h__label {
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--grigio-chiaro);
  margin-top: var(--space-4);
}

/* Panel Team */
.panel--team {
  background: var(--bianco-sporco);
}

.team-horizontal {
  display: flex;
  gap: var(--space-8);
  align-items: center;
}

.team-horizontal__intro {
  min-width: 350px;
}

.team-horizontal__number {
  font-family: var(--font-heading);
  font-size: clamp(5rem, 10vw, 8rem);
  font-weight: 700;
  color: var(--grigio-chiaro);
  line-height: 0.8;
}

.team-horizontal__title {
  font-family: var(--font-heading);
  font-size: var(--text-3xl);
  font-weight: 700;
  text-transform: uppercase;
  margin-top: var(--space-4);
}

.team-card-h {
  min-width: 400px;
  display: grid;
  grid-template-columns: 200px 1fr;
  background: var(--bianco);
  border: 1px solid var(--grigio-chiaro);
  overflow: hidden;
}

.team-card-h__image {
  width: 200px;
  height: 100%;
  min-height: 300px;
  background: var(--grigio-chiaro);
  object-fit: cover;
}

.team-card-h__content {
  padding: var(--space-8);
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.team-card-h__name {
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  font-weight: 700;
  text-transform: uppercase;
  margin-bottom: var(--space-2);
}

.team-card-h__role {
  font-size: var(--text-sm);
  color: var(--brand);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--space-4);
}

.team-card-h__bio {
  font-size: var(--text-sm);
  color: var(--grigio-medio);
  line-height: 1.7;
}

/* Panel CTA Links (discrete) */
.panel-cta {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  margin-top: var(--space-6);
  font-size: var(--text-sm);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--brand);
  transition: all var(--transition-fast);
}

.panel-cta:hover {
  gap: var(--space-3);
  color: var(--brand-profondo);
}

.panel-cta--light {
  color: var(--brand-chiaro);
}

.panel-cta--light:hover {
  color: var(--bianco);
}

/* Panel CTA */
.panel--cta {
  background: var(--nero);
  color: var(--bianco);
}

.cta-horizontal {
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
}

.cta-horizontal__title {
  font-family: var(--font-heading);
  font-size: clamp(3rem, 10vw, 8rem);
  font-weight: 700;
  text-transform: uppercase;
  line-height: 0.9;
  margin-bottom: var(--space-8);
}

.cta-horizontal__btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-4) var(--space-8);
  border: 2px solid var(--bianco);
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--bianco);
  transition: all var(--transition-fast);
}

.cta-horizontal__btn:hover {
  background: var(--bianco);
  color: var(--nero);
}

/* Scroll Indicator */
.scroll-indicator {
  position: fixed;
  bottom: var(--space-8);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--grigio-medio);
  z-index: 50;
  opacity: 1;
  transition: opacity var(--transition-base);
}

.scroll-indicator.hidden {
  opacity: 0;
}

.scroll-indicator__line {
  width: 60px;
  height: 1px;
  background: var(--grigio-medio);
  position: relative;
  overflow: hidden;
}

.scroll-indicator__line::after {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: var(--brand);
  animation: scrollLine 2s infinite;
}

@keyframes scrollLine {
  0% { left: -100%; }
  100% { left: 100%; }
}

/* Section Dots */
.section-dots {
  position: fixed;
  right: var(--space-8);
  top: 50%;
  transform: translateY(-50%);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  z-index: 50;
}

.section-dot {
  width: 10px;
  height: 10px;
  border: 1px solid var(--grigio-medio);
  border-radius: 0;
  background: transparent;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.section-dot--active {
  background: var(--brand);
  border-color: var(--brand);
}

.section-dot:hover {
  border-color: var(--brand);
}

/* ============================================
   PAGINE INTERNE (Scroll Verticale)
   ============================================ */
.page-wrapper {
  padding-top: 64px;
  min-height: 100vh;
}

/* Hero interno */
.hero-inner {
  background: linear-gradient(135deg, var(--nero) 0%, var(--brand-profondo) 100%);
  color: var(--bianco);
  padding: var(--space-16) 0;
}

.hero-inner__eyebrow {
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.3em;
  color: var(--brand-chiaro);
  margin-bottom: var(--space-4);
  display: block;
}

.hero-inner__title {
  font-family: var(--font-heading);
  font-size: clamp(2.5rem, 6vw, 5rem);
  font-weight: 700;
  text-transform: uppercase;
  line-height: 0.95;
  margin-bottom: var(--space-6);
}

.hero-inner__subtitle {
  font-size: var(--text-xl);
  color: var(--grigio-chiaro);
  max-width: 60ch;
}

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

.section--dark {
  background: var(--nero);
  color: var(--bianco);
}

.section--accent {
  background: var(--bianco-sporco);
}

.section--brand {
  background: var(--brand-profondo);
  color: var(--bianco);
}

.section__title {
  font-family: var(--font-heading);
  font-size: var(--text-3xl);
  font-weight: 700;
  text-transform: uppercase;
  margin-bottom: var(--space-8);
}

.section__number {
  font-family: var(--font-heading);
  font-size: clamp(4rem, 8vw, 6rem);
  font-weight: 700;
  color: var(--grigio-chiaro);
  line-height: 0.8;
  margin-bottom: var(--space-4);
}

/* Grid */
.grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: var(--space-8);
}

.col-4 { grid-column: span 4; }
.col-6 { grid-column: span 6; }
.col-8 { grid-column: span 8; }
.col-12 { grid-column: span 12; }

@media (max-width: 768px) {
  .col-4, .col-6, .col-8 {
    grid-column: span 12;
  }
}

/* Cards */
.card {
  background: var(--bianco);
  border: 1px solid var(--grigio-chiaro);
  overflow: hidden;
  transition: all var(--transition-base);
}

.card:hover {
  border-color: var(--nero);
  transform: translateY(-4px);
  box-shadow: 0 12px 24px rgba(0,0,0,0.1);
}

.card__image {
  aspect-ratio: 4/3;
  overflow: hidden;
}

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

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

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

.card__tag {
  display: inline-block;
  padding: var(--space-1) var(--space-2);
  background: var(--brand);
  color: var(--bianco);
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.card__title {
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: 700;
  text-transform: uppercase;
  margin: var(--space-4) 0 var(--space-2);
}

.card__desc {
  font-size: var(--text-sm);
  color: var(--grigio-medio);
  margin-bottom: var(--space-4);
}

.card__link {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--brand);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* Timeline */
.timeline {
  position: relative;
  padding-left: var(--space-8);
}

.timeline::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--grigio-chiaro);
}

.timeline__item {
  position: relative;
  padding-bottom: var(--space-8);
}

.timeline__item::before {
  content: '';
  position: absolute;
  left: calc(-1 * var(--space-8) - 5px);
  top: 0;
  width: 12px;
  height: 12px;
  background: var(--brand);
}

.timeline__year {
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--brand);
  margin-bottom: var(--space-2);
}

.timeline__content {
  color: var(--grigio-medio);
  max-width: 50ch;
}

/* Accordion */
.accordion__item {
  border-bottom: 1px solid var(--grigio-chiaro);
}

.accordion__header {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-6) 0;
  background: none;
  border: none;
  cursor: pointer;
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: 700;
  text-transform: uppercase;
  text-align: left;
}

.accordion__icon {
  width: 24px;
  height: 24px;
  transition: transform var(--transition-fast);
}

.accordion__item--open .accordion__icon {
  transform: rotate(45deg);
}

.accordion__content {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-base);
}

.accordion__item--open .accordion__content {
  max-height: 500px;
}

.accordion__body {
  padding-bottom: var(--space-6);
  color: var(--grigio-medio);
}

/* Form */
.form-group {
  margin-bottom: var(--space-6);
}

.form-label {
  display: block;
  font-size: var(--text-sm);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--space-2);
}

.form-label--required::after {
  content: ' *';
  color: var(--brand);
}

.form-input,
.form-textarea,
.form-select {
  width: 100%;
  padding: var(--space-4);
  border: 1px solid var(--grigio-chiaro);
  background: var(--bianco);
  font-family: inherit;
  font-size: var(--text-base);
  transition: border-color var(--transition-fast);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  outline: none;
  border-color: var(--brand);
}

.form-select {
  padding-right: var(--space-12);
  border-radius: 0;
  appearance: none;
  -webkit-appearance: none;
  -moz-appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23495057' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right var(--space-4) center;
  background-size: 16px;
  cursor: pointer;
}

.form-select:hover {
  border-color: var(--grigio-medio);
}

.form-textarea {
  min-height: 150px;
  resize: vertical;
}

.form-error {
  font-size: var(--text-sm);
  color: #dc2626;
  margin-top: var(--space-2);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-4) var(--space-8);
  font-family: var(--font-heading);
  font-size: var(--text-base);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn--primary {
  background: var(--brand);
  color: var(--bianco);
  border-color: var(--brand);
}

.btn--primary:hover {
  background: var(--brand-profondo);
  border-color: var(--brand-profondo);
}

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

.btn--outline:hover {
  background: var(--nero);
  color: var(--bianco);
}

.btn--ghost {
  background: transparent;
  color: var(--bianco);
  border-color: var(--bianco);
}

.btn--ghost:hover {
  background: var(--bianco);
  color: var(--nero);
}

/* Filter Buttons */
.filter-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-bottom: var(--space-8);
}

.filter-btn {
  padding: var(--space-2) var(--space-4);
  background: transparent;
  border: 1px solid var(--grigio-chiaro);
  font-size: var(--text-sm);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.filter-btn:hover,
.filter-btn--active {
  background: var(--nero);
  color: var(--bianco);
  border-color: var(--nero);
}

/* Portfolio Grid */
.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}

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

@media (max-width: 640px) {
  .portfolio-grid {
    grid-template-columns: 1fr;
  }
}

/* Contact Grid */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
}

@media (max-width: 768px) {
  .contact-grid {
    grid-template-columns: 1fr;
  }
}

.contact-info__item {
  margin-bottom: var(--space-6);
}

.contact-info__label {
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--grigio-medio);
  margin-bottom: var(--space-1);
}

.contact-info__value {
  font-size: var(--text-lg);
}

.contact-info__value a {
  color: var(--brand);
}

/* Footer */
.footer {
  background: var(--nero);
  color: var(--bianco);
  padding: var(--space-16) 0 var(--space-8);
}

.footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-12);
  margin-bottom: var(--space-12);
}

@media (max-width: 768px) {
  .footer__grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-8);
  }
}

@media (max-width: 480px) {
  .footer__grid {
    grid-template-columns: 1fr;
  }
}

.footer__logo {
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: 700;
  text-transform: uppercase;
  margin-bottom: var(--space-4);
}

.footer__tagline {
  font-size: var(--text-sm);
  color: var(--grigio-chiaro);
  max-width: 30ch;
}

.footer__title {
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--space-4);
}

.footer__links {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.footer__link {
  font-size: var(--text-sm);
  color: var(--grigio-chiaro);
  transition: color var(--transition-fast);
}

.footer__link:hover {
  color: var(--brand-chiaro);
}

.footer__bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: var(--space-8);
  border-top: 1px solid rgba(255,255,255,0.1);
  font-size: var(--text-sm);
  color: var(--grigio-medio);
}

@media (max-width: 640px) {
  .footer__bottom {
    flex-direction: column;
    gap: var(--space-4);
    text-align: center;
  }
}

/* CTA Section (pagine interne) */
.cta-section {
  background: var(--nero);
  color: var(--bianco);
  padding: var(--space-16) 0;
  text-align: center;
}

.cta-section__title {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 5vw, 4rem);
  font-weight: 700;
  text-transform: uppercase;
  line-height: 0.95;
  margin-bottom: var(--space-8);
}

/* ============================================
   RESPONSIVE - Fallback scroll verticale
   ============================================ */
@media (max-width: 1024px) {
  .horizontal-wrapper {
    width: 100%;
    height: auto;
    overflow-x: visible;
    overflow-y: visible;
  }

  .horizontal-container {
    flex-direction: column;
    width: 100%;
    height: auto;
    padding-top: 64px;
  }

  .panel {
    width: 100%;
    height: auto;
    min-height: auto;
    padding: var(--space-16) 0;
  }

  .panel--hero {
    min-height: 80vh;
  }

  .hero-split {
    grid-template-columns: 1fr;
    min-height: auto;
  }

  .hero-split__right {
    padding-left: 0;
    border-left: none;
    padding-top: var(--space-8);
    border-top: 1px solid rgba(255,255,255,0.2);
  }

  .services-horizontal,
  .projects-horizontal,
  .team-horizontal,
  .stats-horizontal {
    flex-direction: column;
  }

  .services-horizontal__intro,
  .projects-horizontal__intro,
  .team-horizontal__intro,
  .stats-horizontal__title {
    min-width: 100%;
    padding-right: 0;
    margin-bottom: var(--space-8);
  }

  .service-card-h,
  .project-slide,
  .team-card-h {
    min-width: 100%;
    width: 100%;
  }

  .project-slide {
    height: 50vh;
  }

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

  .team-card-h {
    grid-template-columns: 1fr;
  }

  .team-card-h__image {
    width: 100%;
    height: 200px;
  }

  .section-dots,
  .scroll-indicator {
    display: none;
  }
}

/* ============================================
   ANIMATIONS
   ============================================ */
.animate-on-scroll {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.animate-on-scroll.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.stagger-children .animate-on-scroll:nth-child(1) { transition-delay: 0.1s; }
.stagger-children .animate-on-scroll:nth-child(2) { transition-delay: 0.2s; }
.stagger-children .animate-on-scroll:nth-child(3) { transition-delay: 0.3s; }
.stagger-children .animate-on-scroll:nth-child(4) { transition-delay: 0.4s; }
.stagger-children .animate-on-scroll:nth-child(5) { transition-delay: 0.5s; }
.stagger-children .animate-on-scroll:nth-child(6) { transition-delay: 0.6s; }