/* ============================================
   1. Reset & base
   ============================================ */

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

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

body {
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 400;
  line-height: 1.6;
  color: var(--color-text-primary);
  background-color: var(--color-bg-primary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a {
  color: var(--color-terracotta);
  text-decoration: none;
}

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

a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: 2px solid var(--color-terracotta);
  outline-offset: 2px;
}

ul,
ol {
  list-style: none;
}

button {
  font: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

input,
select,
textarea {
  font: inherit;
  color: inherit;
}

/* ============================================
   2. CSS Variables (palette, tipografia)
   ============================================ */

:root {
  /* Palette */
  --color-terracotta: #B8492C;
  --color-terracotta-dark: #8C3520;
  --color-terracotta-light: #E89878;
  --color-olive: #5C6B3D;
  --color-amber: #D97706;

  --color-text-primary: #1F2937;
  --color-text-secondary: #6B7280;
  --color-text-tertiary: #9CA3AF;

  --color-bg-primary: #FCFAF7;
  --color-bg-secondary: #F5F1EB;
  --color-border: #E5DDD0;

  /* Badge */
  --badge-available-bg: #5C6B3D;
  --badge-available-text: #FCFAF7;
  --badge-coming-bg: rgba(217, 119, 6, 0.12);
  --badge-coming-text: #92520A;
  --badge-wip-bg: rgba(31, 41, 55, 0.08);
  --badge-wip-text: #374151;

  /* Tipografia */
  --font-body: 'Manrope', system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-display: 'Space Grotesk', system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;

  /* Spaziature */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;
  --space-3xl: 64px;

  /* Border radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;

  /* Container */
  --container-max: 1100px;
  --container-padding: 20px;
}

@media (min-width: 768px) {
  :root {
    --container-padding: 32px;
  }
}

@media (min-width: 1024px) {
  :root {
    --container-padding: 48px;
  }
}

/* ============================================
   3. Tipografia
   ============================================ */

h1, h2, h3, h4, h5, h6 {
  color: var(--color-text-primary);
  font-weight: 500;
}

h1 {
  font-family: var(--font-display);
  font-size: 28px;
  line-height: 1.15;
  letter-spacing: -0.02em;
}

h2 {
  font-family: var(--font-body);
  font-size: 22px;
  line-height: 1.25;
  letter-spacing: -0.01em;
}

h3 {
  font-family: var(--font-body);
  font-size: 18px;
  line-height: 1.3;
}

h4 {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.4;
}

p {
  margin-bottom: var(--space-md);
}

p:last-child {
  margin-bottom: 0;
}

.text-lead {
  font-size: 17px;
  line-height: 1.55;
  color: var(--color-text-primary);
}

.text-small {
  font-size: 12px;
  line-height: 1.5;
}

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

.pretitle {
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-terracotta);
  margin-bottom: var(--space-sm);
}

@media (min-width: 768px) {
  h1 {
    font-size: 40px;
  }

  h2 {
    font-size: 28px;
  }

  h3 {
    font-size: 20px;
  }

  .text-lead {
    font-size: 18px;
  }

  body {
    font-size: 16px;
  }

  .text-small {
    font-size: 13px;
  }
}

@media (min-width: 1024px) {
  h1 {
    font-size: 48px;
  }

  h2 {
    font-size: 32px;
  }

  h3 {
    font-size: 22px;
  }

  .text-lead {
    font-size: 20px;
  }

  body {
    font-size: 17px;
  }

  .text-small {
    font-size: 14px;
  }
}

/* ============================================
   4. Layout (container, grid)
   ============================================ */

.container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--container-padding);
  padding-right: var(--container-padding);
}

.section {
  padding-top: var(--space-2xl);
  padding-bottom: var(--space-2xl);
}

.section--alt {
  background-color: var(--color-bg-secondary);
}

.grid-2 {
  display: grid;
  gap: var(--space-lg);
}

.grid-3 {
  display: grid;
  gap: var(--space-lg);
}

@media (min-width: 768px) {
  .section {
    padding-top: var(--space-3xl);
    padding-bottom: var(--space-3xl);
  }

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

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

@media (min-width: 1024px) {
  .grid-3 {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* ============================================
   5. Componenti
   ============================================ */

/* --- Skip link --- */

.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-md);
  background: var(--color-terracotta);
  color: var(--color-bg-primary);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-md);
  font-size: 14px;
  font-weight: 500;
  z-index: 1000;
}

.skip-link:focus {
  top: var(--space-sm);
  color: var(--color-bg-primary);
}

/* --- Header --- */

.site-header {
  padding: var(--space-md) 0;
  border-bottom: 1px solid var(--color-border);
  background-color: var(--color-bg-primary);
  position: sticky;
  top: 0;
  z-index: 100;
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.site-header__logo {
  display: block;
  height: 28px;
  width: auto;
}

.site-header__logo img {
  height: 100%;
  width: auto;
}

.site-header__nav {
  display: none;
}

.site-header__nav-list {
  display: flex;
  gap: var(--space-xl);
  align-items: center;
}

.site-header__nav-link {
  font-size: 15px;
  font-weight: 500;
  color: var(--color-text-primary);
  transition: color 0.2s;
}

.site-header__nav-link:hover {
  color: var(--color-terracotta);
}

.site-header__nav-link--active {
  color: var(--color-terracotta);
}

/* Hamburger */

.site-header__toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  padding: 0;
}

.site-header__toggle-icon {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text-primary);
  position: relative;
  transition: background 0.2s;
}

.site-header__toggle-icon::before,
.site-header__toggle-icon::after {
  content: '';
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text-primary);
  position: absolute;
  left: 0;
  transition: transform 0.2s;
}

.site-header__toggle-icon::before {
  top: -7px;
}

.site-header__toggle-icon::after {
  top: 7px;
}

/* Hamburger open state */
.site-header__toggle[aria-expanded="true"] .site-header__toggle-icon {
  background: transparent;
}

.site-header__toggle[aria-expanded="true"] .site-header__toggle-icon::before {
  top: 0;
  transform: rotate(45deg);
}

.site-header__toggle[aria-expanded="true"] .site-header__toggle-icon::after {
  top: 0;
  transform: rotate(-45deg);
}

/* Mobile nav */

.site-header__mobile-nav {
  display: none;
  padding: var(--space-md) 0;
  border-top: 1px solid var(--color-border);
  margin-top: var(--space-md);
}

.site-header__mobile-nav[aria-hidden="false"] {
  display: block;
}

.site-header__mobile-nav-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.site-header__mobile-nav-link {
  display: block;
  padding: var(--space-sm) 0;
  font-size: 16px;
  font-weight: 500;
  color: var(--color-text-primary);
}

.site-header__mobile-nav-link:hover {
  color: var(--color-terracotta);
}

.site-header__mobile-nav-link--active {
  color: var(--color-terracotta);
}

@media (min-width: 768px) {
  .site-header__logo {
    height: 34px;
  }

  .site-header__nav {
    display: block;
  }

  .site-header__toggle {
    display: none;
  }

  .site-header__mobile-nav {
    display: none !important;
  }
}

/* --- Footer --- */

.site-footer {
  background-color: var(--color-bg-secondary);
  border-top: 1px solid var(--color-border);
  padding: var(--space-2xl) 0 var(--space-lg);
}

.site-footer__grid {
  display: grid;
  gap: var(--space-xl);
  margin-bottom: var(--space-2xl);
}

.site-footer__logo {
  height: 26px;
  width: auto;
  margin-bottom: var(--space-md);
}

.site-footer__logo img {
  height: 100%;
  width: auto;
}

.site-footer__tagline {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.5;
}

.site-footer__heading {
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text-primary);
  margin-bottom: var(--space-md);
}

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

.site-footer__link {
  font-size: 14px;
  color: var(--color-text-secondary);
}

.site-footer__link:hover {
  color: var(--color-terracotta);
}

.site-footer__bottom {
  border-top: 1px solid var(--color-border);
  padding-top: var(--space-lg);
  font-size: 13px;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

.site-footer__bottom a {
  font-weight: 500;
}

@media (min-width: 768px) {
  .site-footer__grid {
    grid-template-columns: 2fr 1fr 1fr;
  }
}

/* --- Buttons --- */

.btn {
  display: inline-block;
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 14px;
  padding: 10px 18px;
  border-radius: var(--radius-md);
  text-align: center;
  transition: background-color 0.2s, color 0.2s;
  cursor: pointer;
}

.btn--primary {
  background-color: var(--color-terracotta);
  color: var(--color-bg-primary);
  border: none;
}

.btn--primary:hover {
  background-color: var(--color-terracotta-dark);
  color: var(--color-bg-primary);
}

.btn--secondary {
  background-color: transparent;
  color: var(--color-terracotta);
  border: 1px solid var(--color-terracotta);
}

.btn--secondary:hover {
  background-color: rgba(184, 73, 44, 0.06);
  color: var(--color-terracotta);
}

/* --- Badge --- */

.badge {
  display: inline-block;
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 12px;
  padding: 3px 10px;
  border-radius: var(--radius-sm);
  line-height: 1.4;
}

.badge--available {
  background-color: var(--badge-available-bg);
  color: var(--badge-available-text);
}

.badge--coming {
  background-color: var(--badge-coming-bg);
  color: var(--badge-coming-text);
}

.badge--wip {
  background-color: var(--badge-wip-bg);
  color: var(--badge-wip-text);
}

/* --- Project card --- */

.project-card {
  background: var(--color-bg-primary);
  border: 0.5px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-md) 20px;
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  overflow: hidden;
}

.project-card__screenshot {
  margin: calc(-1 * var(--space-md)) -20px var(--space-sm);
  border-radius: var(--radius-lg) var(--radius-lg) var(--radius-md) var(--radius-md);
  overflow: hidden;
  line-height: 0;
}

.project-card__screenshot img {
  width: 100%;
  height: 180px;
  object-fit: cover;
  object-position: top;
  border-radius: var(--radius-md) var(--radius-md) 0 0;
  display: block;
}

.project-card__badge {
  margin-bottom: var(--space-xs);
}

.project-card__title {
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 18px;
  line-height: 1.3;
  margin: 0;
}

.project-card__description {
  font-size: 15px;
  color: var(--color-text-secondary);
  line-height: 1.55;
  margin: 0;
  flex: 1;
}

.project-card__cta {
  font-size: 14px;
  font-weight: 500;
  color: var(--color-terracotta);
  margin-top: var(--space-xs);
}

.project-card__cta:hover {
  color: var(--color-terracotta-dark);
}

@media (min-width: 768px) {
  .project-card {
    padding: 20px 24px;
  }

  .project-card__screenshot {
    margin: -20px -24px var(--space-sm);
  }

  .project-card__title {
    font-size: 20px;
  }
}

/* --- Inline link with arrow --- */

.link-arrow {
  font-weight: 500;
  color: var(--color-terracotta);
  font-size: 15px;
}

.link-arrow:hover {
  color: var(--color-terracotta-dark);
}

/* --- Info box (sfondo pietra) --- */

.info-box {
  background-color: var(--color-bg-secondary);
  border-radius: var(--radius-lg);
  padding: var(--space-xl) var(--space-lg);
}

/* --- Callout (bordo sinistro ambra, sfondo pietra) --- */

.callout {
  background-color: var(--color-bg-secondary);
  border-left: 3px solid var(--color-amber);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  padding: var(--space-lg);
}

/* --- Form --- */

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

.form-label {
  display: block;
  font-weight: 500;
  font-size: 14px;
  margin-bottom: var(--space-sm);
  color: var(--color-text-primary);
}

.form-input,
.form-select,
.form-textarea {
  display: block;
  width: 100%;
  padding: 10px 14px;
  font-size: 15px;
  line-height: 1.5;
  color: var(--color-text-primary);
  background-color: var(--color-bg-primary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: border-color 0.2s;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  border-color: var(--color-terracotta);
  outline: none;
  box-shadow: 0 0 0 3px rgba(184, 73, 44, 0.12);
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: var(--color-text-tertiary);
}

.form-textarea {
  min-height: 140px;
  resize: vertical;
}

.form-checkbox {
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
}

.form-checkbox input[type="checkbox"] {
  width: 18px;
  height: 18px;
  margin-top: 2px;
  accent-color: var(--color-terracotta);
  flex-shrink: 0;
}

.form-checkbox label {
  font-size: 14px;
  line-height: 1.5;
  color: var(--color-text-secondary);
}

.form-error {
  font-size: 13px;
  color: #B8492C;
  margin-top: var(--space-xs);
}

.form-message {
  padding: var(--space-md) var(--space-lg);
  border-radius: var(--radius-md);
  font-size: 15px;
  margin-bottom: var(--space-lg);
}

.form-message--success {
  background-color: var(--badge-available-bg);
  color: var(--badge-available-text);
}

.form-message--error {
  background-color: rgba(184, 73, 44, 0.08);
  color: var(--color-terracotta-dark);
}

/* ============================================
   6. Pagine
   ============================================ */

/* --- Hero --- */

.hero {
  padding: var(--space-3xl) 0 var(--space-2xl);
}

.hero__title {
  margin-bottom: var(--space-lg);
}

.hero__lead {
  max-width: 640px;
  margin-bottom: var(--space-xl);
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
}

/* --- Section header --- */

.section-header {
  margin-bottom: var(--space-xl);
}

.section-header__subtitle {
  color: var(--color-text-secondary);
  font-size: 15px;
  margin-top: var(--space-sm);
}

@media (min-width: 768px) {
  .section-header__subtitle {
    font-size: 16px;
  }
}

/* --- Project page header --- */

.project-header {
  padding-top: var(--space-2xl);
  padding-bottom: var(--space-xl);
}

.project-header__badge {
  margin-bottom: var(--space-md);
}

.project-header__title {
  margin-bottom: var(--space-sm);
}

.project-header__subtitle {
  font-size: 17px;
  color: var(--color-text-secondary);
  line-height: 1.55;
}

@media (min-width: 768px) {
  .project-header__subtitle {
    font-size: 20px;
  }
}

/* --- Project page content --- */

.project-content h2 {
  margin-top: var(--space-2xl);
  margin-bottom: var(--space-md);
}

.project-content h3 {
  margin-top: var(--space-xl);
  margin-bottom: var(--space-sm);
}

.project-content ul,
.project-content ol {
  padding-left: var(--space-lg);
  margin-bottom: var(--space-md);
}

.project-content ul {
  list-style: disc;
}

.project-content ol {
  list-style: decimal;
}

.project-content li {
  margin-bottom: var(--space-sm);
  line-height: 1.6;
}

.project-content .callout {
  margin: var(--space-xl) 0;
}

/* --- Project screenshot --- */

.project-screenshot {
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-bottom: var(--space-2xl);
  aspect-ratio: 16 / 9;
}

.project-screenshot img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top;
  display: block;
}

.project-screenshot__placeholder {
  color: var(--color-text-tertiary);
  font-size: 14px;
  text-align: center;
  padding: var(--space-lg);
}

/* --- Project footer box --- */

.project-footer-box {
  background-color: var(--color-bg-secondary);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  margin-top: var(--space-2xl);
}

.project-footer-box dt {
  font-size: 13px;
  font-weight: 500;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-xs);
}

.project-footer-box dd {
  margin-bottom: var(--space-md);
  font-size: 15px;
}

.project-footer-box dd:last-child {
  margin-bottom: 0;
}

/* --- Contact columns --- */

.contact-channels {
  display: grid;
  gap: var(--space-lg);
  margin-bottom: var(--space-2xl);
}

@media (min-width: 768px) {
  .contact-channels {
    grid-template-columns: repeat(3, 1fr);
  }
}

.contact-channel h3 {
  margin-bottom: var(--space-sm);
}

.contact-channel a {
  font-weight: 500;
}

/* --- Page content (chi-siamo, partecipa, sostieni) --- */

.page-content h2 {
  margin-top: var(--space-2xl);
  margin-bottom: var(--space-md);
}

.page-content h3 {
  margin-top: var(--space-xl);
  margin-bottom: var(--space-sm);
}

.page-content ul {
  list-style: disc;
  padding-left: var(--space-lg);
  margin-bottom: var(--space-md);
}

.page-content li {
  margin-bottom: var(--space-sm);
  line-height: 1.6;
}

.page-content .info-box {
  margin: var(--space-xl) 0;
}

/* --- Principles grid (chi-siamo) --- */

.principles {
  display: grid;
  gap: var(--space-xl);
  margin-top: var(--space-lg);
}

@media (min-width: 768px) {
  .principles {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* ============================================
   7. Utilities
   ============================================ */

.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;
}

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

.mt-0 { margin-top: 0; }
.mb-0 { margin-bottom: 0; }
.mt-lg { margin-top: var(--space-lg); }
.mt-xl { margin-top: var(--space-xl); }
.mb-lg { margin-bottom: var(--space-lg); }
.mb-xl { margin-bottom: var(--space-xl); }

/* ============================================
   8. Responsive refinements
   ============================================ */

/* Form max-width su desktop */
@media (min-width: 768px) {
  form {
    max-width: 600px;
  }
}

/* Hero extra breathing room su large */
@media (min-width: 1024px) {
  .hero {
    padding: 80px 0 var(--space-3xl);
  }
}

/* Large breakpoint (1280px) */
@media (min-width: 1280px) {
  .hero {
    padding: 96px 0 var(--space-3xl);
  }

  .hero__title {
    font-size: 52px;
  }
}