/* Fron SRL - Base Styles */
/* Reset, Typography, Utilities */

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: var(--font-normal);
  line-height: var(--leading-normal);
  color: var(--color-neutral-200);
  background-color: var(--surface-1);
  overflow-x: hidden;
}

/* Subtle grain overlay - breaks digital flatness */
.noise-overlay {
  position: fixed;
  inset: 0;
  z-index: var(--z-noise);
  pointer-events: none;
  opacity: 0.04;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.8' numOctaves='2' stitchTiles='stitch'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* Typography */
h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-heading);
  font-weight: var(--font-bold);
  line-height: var(--leading-tight);
  color: var(--color-neutral-900);
  margin: 0;
  text-wrap: balance;
}

h1 {
  font-size: var(--text-5xl);
  letter-spacing: var(--tracking-tight);
}

h2 {
  font-size: var(--text-4xl);
}

h3 {
  font-size: var(--text-3xl);
  font-weight: var(--font-semibold);
  line-height: var(--leading-snug);
  color: var(--color-neutral-800);
}

h4 {
  font-size: var(--text-2xl);
}

h5 {
  font-size: var(--text-xl);
}

h6 {
  font-size: var(--text-lg);
}

p {
  margin: 0;
  max-width: 65ch;
  text-wrap: pretty;
}

a {
  color: var(--color-primary-500);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-primary-400);
}

a:focus {
  outline: 3px solid var(--color-secondary-400);
  outline-offset: 2px;
}

/* Lists */
ul,
ol {
  list-style: none;
}

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

/* Buttons Reset */
button {
  font-family: inherit;
  font-size: inherit;
  border: none;
  background: none;
  cursor: pointer;
  padding: 0;
}

/* Focus States */
*:focus {
  outline: 3px solid var(--color-secondary-400);
  outline-offset: 2px;
}

button:focus,
a:focus {
  outline: 3px solid var(--color-secondary-400);
  outline-offset: 2px;
}

/* Selection */
::selection {
  background-color: var(--color-secondary-400);
  color: var(--color-neutral-0);
}

/* Layout Utilities */
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--section-padding-x-mobile);
}

@media (min-width: 768px) {
  .container {
    padding: 0 var(--section-padding-x-tablet);
  }
}

@media (min-width: 1024px) {
  .container {
    padding: 0 var(--section-padding-x-desktop);
  }
}

/* Grid System */
.grid {
  display: grid;
  gap: var(--space-6);
}

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

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

.grid-cols-3 {
  grid-template-columns: repeat(3, 1fr);
}

.grid-cols-4 {
  grid-template-columns: repeat(4, 1fr);
}

@media (max-width: 1024px) {
  .grid-cols-4 {
    grid-template-columns: repeat(2, 1fr);
  }

  .grid-cols-3 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {

  .grid-cols-2,
  .grid-cols-3,
  .grid-cols-4 {
    grid-template-columns: repeat(1, 1fr);
  }
}

/* Flexbox Utilities */
.flex {
  display: flex;
}

.flex-col {
  flex-direction: column;
}

.flex-wrap {
  flex-wrap: wrap;
}

.items-center {
  align-items: center;
}

.items-start {
  align-items: flex-start;
}

.items-end {
  align-items: flex-end;
}

.justify-center {
  justify-content: center;
}

.justify-between {
  justify-content: space-between;
}

.justify-start {
  justify-content: flex-start;
}

.justify-end {
  justify-content: flex-end;
}

/* Gap Utilities */
.gap-2 {
  gap: var(--space-2);
}

.gap-4 {
  gap: var(--space-4);
}

.gap-6 {
  gap: var(--space-6);
}

.gap-8 {
  gap: var(--space-8);
}

/* Spacing Utilities */
.mt-4 {
  margin-top: var(--space-4);
}

.mt-6 {
  margin-top: var(--space-6);
}

.mt-8 {
  margin-top: var(--space-8);
}

.mt-12 {
  margin-top: var(--space-12);
}

.mt-16 {
  margin-top: var(--space-16);
}

.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);
}

.mb-16 {
  margin-bottom: var(--space-16);
}

/* Text Utilities */
.text-center {
  text-align: center;
}

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

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

.text-uppercase {
  text-transform: uppercase;
}

.font-bold {
  font-weight: var(--font-bold);
}

.font-semibold {
  font-weight: var(--font-semibold);
}

.font-medium {
  font-weight: var(--font-medium);
}

/* Text Styles - Predefined Classes */
.text-hero {
  font-family: var(--font-heading);
  font-size: var(--text-7xl);
  font-weight: var(--font-extrabold);
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-tighter);
  color: var(--color-neutral-0);
}

.text-h1 {
  font-family: var(--font-heading);
  font-size: var(--text-5xl);
  font-weight: var(--font-bold);
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-tight);
  color: var(--color-neutral-900);
}

.text-h2 {
  font-family: var(--font-heading);
  font-size: var(--text-4xl);
  font-weight: var(--font-bold);
  line-height: var(--leading-tight);
  color: var(--color-neutral-900);
}

.text-h3 {
  font-family: var(--font-heading);
  font-size: var(--text-3xl);
  font-weight: var(--font-semibold);
  line-height: var(--leading-snug);
  color: var(--color-neutral-800);
}

.text-body-lg {
  font-family: var(--font-body);
  font-size: var(--text-lg);
  font-weight: var(--font-normal);
  line-height: var(--leading-relaxed);
  color: var(--color-neutral-700);
}

.text-body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: var(--font-normal);
  line-height: var(--leading-normal);
  color: var(--color-neutral-700);
}

.text-number-display {
  font-family: var(--font-mono);
  font-size: var(--text-8xl);
  font-weight: var(--font-bold);
  line-height: var(--leading-none);
  letter-spacing: var(--tracking-wide);
  color: var(--color-secondary-500);
}

/* Color Utilities */
.text-primary {
  color: var(--color-primary-600);
}

.text-secondary {
  color: var(--color-secondary-600);
}

.text-white {
  color: var(--color-neutral-0);
}

.text-gray {
  color: var(--color-neutral-600);
}

.bg-white {
  background-color: var(--color-neutral-0);
}

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

.bg-navy {
  background-color: var(--color-primary-900);
}

/* Visibility */
.hidden {
  display: none;
}

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

/* Skip to Content Link */
.skip-to-content {
  position: absolute;
  top: -100px;
  left: 0;
  background: var(--color-primary-700);
  color: var(--color-neutral-0);
  padding: 1rem 2rem;
  z-index: var(--z-skip);
  transition: top 0.3s;
  text-decoration: none;
  font-weight: var(--font-semibold);
}

.skip-to-content:focus {
  top: 0;
}

/* Responsive Utilities */
@media (max-width: 768px) {
  .hide-mobile {
    display: none !important;
  }
}

@media (min-width: 769px) {
  .hide-desktop {
    display: none !important;
  }
}

/* Touch Targets (Mobile) - solo controlli/azioni, non i link inline nel testo */
@media (max-width: 768px) {

  button,
  .btn-primary,
  .btn-secondary,
  .btn-istituzionale,
  .navbar-link,
  .info-fdo-number,
  .sede-contact-link,
  .sede-cta a,
  .step-contact-links a,
  .cta-buttons a,
  .footer-column a,
  .footer-legal a,
  .footer-legal-btn {
    min-height: 44px;
    min-width: 44px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }

  /* Tap highlight */
  * {
    -webkit-tap-highlight-color: rgba(196, 167, 71, 0.1);
  }
}

/* Accessibility - Reduced Motion */
@media (prefers-reduced-motion: reduce) {

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  html {
    scroll-behavior: auto;
  }
}