:root {
  color-scheme: light;
  --background: #f5f1e8;
  --surface: #fffdf8;
  --ink: #19343a;
  --muted: #5d6c6f;
  --accent: #0f6d73;
  --accent-dark: #0a5358;
  --border: #c9d3d1;
  --focus: #efae55;
  --error: #a62b2b;
  --success: #226844;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  position: relative;
  isolation: isolate;
  margin: 0;
  min-width: 320px;
  background: var(--background);
  color: var(--ink);
  font-family: "Inter", Arial, Helvetica, sans-serif;
  line-height: 1.55;
}

body::before {
  position: fixed;
  z-index: -1;
  inset: -20px;
  background:
    linear-gradient(rgba(245, 241, 232, 0.5), rgba(245, 241, 232, 0.5)),
    url("assets/sardina.jpg") center / cover no-repeat;
  content: "";
  filter: blur(5px);
  transform: scale(1.03);
}

.page-shell {
  width: min(100% - 2rem, 760px);
  margin: 0 auto;
  padding: 4rem 0;
}

.petition {
  overflow: hidden;
  background: var(--surface);
  border: 1px solid rgba(25, 52, 58, 0.12);
  border-radius: 0;
  box-shadow: 0 16px 44px rgba(25, 52, 58, 0.08);
}

.petition__header,
.signature-form {
  padding: 2.5rem;
}

.petition__header {
  border-bottom: 1px solid var(--border);
}

.eyebrow {
  margin: 0 0 0.75rem;
  color: #111111;
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: normal;
  text-transform: none;
}

h1 {
  margin: 0;
  max-width: 14ch;
  font-family: "Inter", Arial, Helvetica, sans-serif;
  font-size: clamp(2.35rem, 8vw, 4.5rem);
  font-weight: 500;
  letter-spacing: -0.045em;
  line-height: 0.98;
}

.intro {
  max-width: 63ch;
  margin: 1.5rem 0 0;
  color: var(--muted);
  font-size: 1.08rem;
}

.intro-note {
  max-width: 100%;
  margin: 0.65rem 0 0;
  color: var(--muted);
  font-size: 0.78rem;
  line-height: 1.5;
}

.legal-updated {
  margin: 0.75rem 0 0;
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 600;
}

.legal-updated + .intro {
  margin-top: 0.85rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.5rem;
}

.detail-actions {
  display: flex;
  margin-top: 1.5rem;
}

.page-end-actions {
  padding: 1.5rem 2.5rem 2.5rem;
  background: #ffffff;
}

.page-end-actions .header-cta {
  display: flex;
  width: 100%;
  min-height: 52px;
  align-items: center;
  justify-content: center;
  text-align: center;
}

.header-cta {
  display: inline-block;
  padding: 0.75rem 1.15rem;
  background: #ffffff;
  border: 1px solid #111111;
  border-radius: 0;
  color: #111111;
  font-weight: 700;
  text-decoration: none;
}

.header-cta:hover {
  background: #111111;
  color: #ffffff;
}

.header-cta:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 3px;
}

.back-nav {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  padding: 1.1rem 2.5rem;
  color: #111111;
  font-weight: 600;
  text-decoration: none;
  transition:
    background-color 160ms ease,
    color 160ms ease;
}

.back-nav:hover {
  background: #111111;
  color: #ffffff;
}

.back-nav__icon {
  display: block;
  width: 1.25rem;
  height: 1.25rem;
  filter: brightness(0);
  transition:
    filter 160ms ease,
    transform 160ms ease;
}

.back-nav:hover .back-nav__icon {
  filter: brightness(0) invert(1);
  transform: translateX(-0.2rem);
}

.back-nav:active .back-nav__icon {
  transform: translateX(-0.35rem);
}

.back-nav:focus-visible {
  background: #111111;
  color: #ffffff;
  outline: 3px solid var(--focus);
  outline-offset: -3px;
}

.back-nav:focus-visible .back-nav__icon {
  filter: brightness(0) invert(1);
}

@media (prefers-reduced-motion: reduce) {
  .back-nav,
  .back-nav__icon {
    transition: none;
  }

  .back-nav:hover .back-nav__icon,
  .back-nav:active .back-nav__icon {
    transform: none;
  }
}

.problem-section {
  padding: 2.5rem;
  background: #f4f3ef;
  border-bottom: 1px solid var(--border);
}

.sound-comparison {
  margin: 2rem 0 0;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
}

.sound-meter__readout {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.75rem;
}

.sound-meter__level {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 0.35rem;
  margin: 0;
  color: var(--muted);
  font-size: 0.68rem;
  white-space: nowrap;
}

.sound-meter__level-value {
  display: flex;
  align-items: baseline;
  gap: 0.28rem;
}

.sound-meter__level-label,
.sound-meter__simulation {
  font-size: 0.58rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.sound-meter__level strong {
  color: #111111;
  font-size: 1.6rem;
  font-variant-numeric: tabular-nums;
  line-height: 1;
}

.sound-meter__level-unit {
  font-weight: 600;
}

.sound-meter__details {
  display: flex;
  flex-direction: column;
  color: var(--muted);
  gap: 0.15rem;
  font-size: 0.68rem;
  line-height: 1.35;
  text-align: left;
}

.sound-meter__details time {
  color: #111111;
  font-size: 0.7rem;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.025em;
}

.sound-meter__location {
  color: var(--muted);
  font-size: 0.62rem;
}

.sound-bar {
  position: relative;
  display: flex;
  width: 100%;
  height: 1.5rem;
  background: #deded8;
  border: 1px solid #111111;
  box-shadow: inset 0 1px 2px rgba(17, 17, 17, 0.2);
}

.sound-bar__allowed,
.sound-bar__excess,
.sound-bar__remaining {
  height: 100%;
}

.sound-bar__allowed,
.sound-bar__excess {
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.sound-bar__zone-label {
  color: rgba(17, 17, 17, 0.48);
  font-size: 0.58rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  line-height: 1;
  text-transform: uppercase;
  white-space: nowrap;
}

.sound-bar__allowed {
  width: 30%;
  background: #aecdaa;
  border-right: 1px solid #111111;
}

.sound-bar__excess {
  width: 30%;
  background: #b84d47;
  border-right: 1px solid #111111;
}

.sound-bar__remaining {
  width: 40%;
  background: #deded8;
}

.sound-bar__minor-ticks {
  position: absolute;
  z-index: 2;
  right: 0;
  bottom: 0;
  left: 0;
  height: 28%;
  background: repeating-linear-gradient(
    to right,
    rgba(17, 17, 17, 0.38) 0,
    rgba(17, 17, 17, 0.38) 1px,
    transparent 1px,
    transparent 5%
  );
  pointer-events: none;
}

.sound-bar__current-marker {
  position: absolute;
  z-index: 4;
  top: -0.15rem;
  bottom: -0.15rem;
  width: 2px;
  pointer-events: none;
}

.sound-bar__current-marker {
  left: 55%;
  background: #ffffff;
  box-shadow: 0 0 0 1px rgba(17, 17, 17, 0.85);
  transform: translateX(-1px);
}

.sound-bar__peak {
  position: absolute;
  z-index: 5;
  top: -0.15rem;
  bottom: -0.15rem;
  left: 55%;
  width: 1px;
  background: #111111;
  pointer-events: none;
  transform: translateX(-0.5px);
}

.sound-bar__peak-label {
  position: absolute;
  bottom: calc(100% + 0.35rem);
  left: 50%;
  padding: 0.2rem 0.35rem;
  background: #111111;
  color: #ffffff;
  font-size: 0.58rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.06em;
  line-height: 1;
  text-transform: uppercase;
  transform: translateX(-50%);
  white-space: nowrap;
}

.sound-bar__peak-label::after {
  position: absolute;
  top: 100%;
  left: 50%;
  width: 0;
  height: 0;
  border-top: 0.28rem solid #111111;
  border-right: 0.24rem solid transparent;
  border-left: 0.24rem solid transparent;
  content: "";
  transform: translateX(-50%);
}

.sound-bar__ticks {
  position: absolute;
  inset: 0;
  z-index: 3;
  pointer-events: none;
}

.sound-bar__tick {
  position: absolute;
  bottom: 0;
  width: 1px;
  height: 52%;
  background: rgba(17, 17, 17, 0.65);
  transform: translateX(-0.5px);
}

.sound-bar__tick--reference {
  width: 2px;
  height: 100%;
  background: #111111;
  transform: translateX(-1px);
}

.sound-bar__tick--edge {
  height: 100%;
}

.sound-bar__tick:nth-child(1) {
  left: 0;
  transform: none;
}

.sound-bar__tick:nth-child(2) {
  left: 10%;
}

.sound-bar__tick:nth-child(3) {
  left: 20%;
}

.sound-bar__tick:nth-child(4) {
  left: 30%;
}

.sound-bar__tick:nth-child(5) {
  left: 40%;
}

.sound-bar__tick:nth-child(6) {
  left: 50%;
}

.sound-bar__tick:nth-child(7) {
  left: 60%;
}

.sound-bar__tick:nth-child(8) {
  left: 70%;
}

.sound-bar__tick:nth-child(9) {
  left: 80%;
}

.sound-bar__tick:nth-child(10) {
  left: 90%;
}

.sound-bar__tick:nth-child(11) {
  right: 0;
  transform: none;
}

.sound-bar__scale {
  position: relative;
  min-height: 2rem;
  margin: 0.25rem 1px 0;
  color: #111111;
  font-size: 0.68rem;
  font-variant-numeric: tabular-nums;
  line-height: 1;
}

.sound-bar__scale > span {
  position: absolute;
  top: 0;
  text-align: center;
  transform: translateX(-50%);
}

.sound-bar__scale > span:nth-child(1) {
  left: 0;
  text-align: left;
  transform: none;
}

.sound-bar__scale > span:nth-child(2) {
  left: 10%;
}

.sound-bar__scale > span:nth-child(3) {
  left: 20%;
}

.sound-bar__scale > span:nth-child(4) {
  left: 30%;
}

.sound-bar__scale > span:nth-child(5) {
  left: 40%;
}

.sound-bar__scale > span:nth-child(6) {
  left: 50%;
}

.sound-bar__scale > span:nth-child(7) {
  left: 60%;
}

.sound-bar__scale > span:nth-child(8) {
  left: 70%;
}

.sound-bar__scale > span:nth-child(9) {
  left: 80%;
}

.sound-bar__scale > span:nth-child(10) {
  left: 90%;
}

.sound-bar__scale > span:nth-child(11) {
  right: 0;
  text-align: right;
  transform: none;
}

.sound-bar__unit {
  display: block;
  margin-top: 0.3rem;
  color: var(--muted);
  font-size: 0.64rem;
  font-weight: 600;
}

.sound-comparison__note {
  margin: 0.55rem 0 0;
  color: var(--muted);
  font-size: 0.75rem;
}

.sound-comparison__note a {
  color: #111111;
  font-weight: 600;
  text-underline-offset: 0.2em;
}

.problem-list {
  margin-top: 2rem;
}

.problem-section--page .problem-list {
  margin-top: 0;
}

.problem-item {
  padding: 1.4rem 0;
  border-top: 1px solid var(--border);
}

.problem-item:last-child {
  padding-bottom: 0;
}

.problem-item h2,
.problem-item h3 {
  margin: 0 0 0.55rem;
  font-size: 1.08rem;
}

.problem-item p {
  margin: 0;
  color: var(--muted);
}

.problem-item .source-links {
  margin-top: 0.7rem;
  font-size: 0.78rem;
}

.source-links a {
  color: #111111;
  font-weight: 600;
  text-underline-offset: 0.2em;
}

.source-links span {
  margin: 0 0.35rem;
  color: var(--border);
}

.signature-form {
  background: #ffffff;
  scroll-margin-top: 2rem;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.25rem;
}

.field {
  display: flex;
  min-width: 0;
  flex-direction: column;
}

.field--full {
  grid-column: 1 / -1;
}

label {
  margin-bottom: 0.4rem;
  font-weight: 700;
}

label span,
.hint {
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 400;
}

label .required-marker {
  color: var(--error);
  font-size: 1em;
  font-weight: 700;
}

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

.honeypot {
  position: absolute;
  left: -10000px;
  width: 1px;
  height: 1px;
  margin: 0;
  overflow: hidden;
}

.hint {
  margin-top: 0.35rem;
}

input {
  width: 100%;
  min-height: 48px;
  padding: 0.7rem 0.8rem;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 0;
  color: var(--ink);
  font: inherit;
}

input:hover {
  border-color: #8fa8a5;
}

input:focus {
  border-color: var(--accent);
  outline: 3px solid color-mix(in srgb, var(--focus) 45%, transparent);
  outline-offset: 1px;
}

input[aria-invalid="true"] {
  border-color: var(--error);
}

.consent-field {
  display: flex;
  align-items: flex-start;
  gap: 0.3rem;
  margin-top: 1.25rem;
}

.consent-field input {
  flex: 0 0 auto;
  width: 1.15rem;
  height: 1.15rem;
  min-height: 0;
  margin: 0.12rem 0 0;
  padding: 0;
  accent-color: #111111;
}

.consent-field label {
  margin: 0;
  font-size: 0.88rem;
  font-weight: 400;
  line-height: 1.4;
}

.consent-field a {
  color: #111111;
  font-weight: 600;
  text-underline-offset: 0.2em;
}

.consent-field__copy {
  display: flex;
  flex-direction: column;
}

.consent-field .error {
  min-height: 0;
  margin-top: 0;
}

.error {
  min-height: 1.25rem;
  margin-top: 0.3rem;
  color: var(--error);
  font-size: 0.82rem;
}

button {
  width: 100%;
  min-height: 52px;
  margin-top: 1.5rem;
  padding: 0.8rem 1.2rem;
  background: #ffffff;
  border: 1px solid #111111;
  border-radius: 0;
  color: #111111;
  cursor: pointer;
  font: inherit;
  font-weight: 700;
}

button:hover {
  background: #111111;
  color: #ffffff;
}

button:disabled {
  background: #eeeeee;
  border-color: #777777;
  color: #555555;
  cursor: wait;
}

.header-cta:active,
button:active {
  transform: translateY(2px);
}

button:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 3px;
}

.form-legal-note {
  margin: 0.65rem auto 0;
  max-width: 42rem;
  color: var(--muted);
  font-size: 0.75rem;
  line-height: 1.45;
  text-align: center;
}

.form-legal-note a {
  color: inherit;
  font-weight: 650;
  text-underline-offset: 0.18em;
}

.form-legal-note a:hover {
  color: var(--ink);
  text-decoration-thickness: 2px;
}

.form-status {
  min-height: 1.5rem;
  margin: 1rem 0 0;
  text-align: center;
}

.form-status--error {
  color: var(--error);
}

.success-modal {
  width: min(calc(100% - 2rem), 32rem);
  max-height: calc(100dvh - 2rem);
  margin: auto;
  padding: 0;
  overflow: auto;
  background: #ffffff;
  border: 1px solid #111111;
  border-radius: 0;
  color: var(--ink);
  box-shadow: 0 24px 70px rgba(0, 0, 0, 0.3);
}

.success-modal::backdrop {
  background: rgba(17, 17, 17, 0.68);
  backdrop-filter: blur(2px);
}

.success-modal__content {
  position: relative;
  padding: 2.25rem;
  text-align: center;
}

.success-modal__content .eyebrow {
  margin-bottom: 0.65rem;
}

.success-modal h2 {
  margin: 0;
  color: var(--ink);
  font-size: clamp(1.75rem, 6vw, 2.4rem);
  font-weight: 600;
  letter-spacing: -0.035em;
  line-height: 1.05;
}

.success-modal__content > p:not(.eyebrow, .share-feedback) {
  margin: 0.85rem 0 0;
  color: var(--muted);
}

.success-modal__share-copy {
  padding-top: 0.85rem;
  border-top: 1px solid var(--border);
}

.success-modal__content > #share-petition {
  margin-top: 1rem;
}

.success-modal__close {
  position: absolute;
  top: 0.75rem;
  right: 0.75rem;
  display: grid;
  width: 2.5rem;
  min-height: 2.5rem;
  place-items: center;
  margin: 0;
  padding: 0.45rem;
  background: transparent;
  border-color: transparent;
}

.success-modal__close img {
  display: block;
  width: 1.25rem;
  height: 1.25rem;
}

.success-modal__close:hover img {
  filter: invert(1);
}

.share-feedback {
  min-height: 0;
  margin-top: 0.65rem !important;
  color: var(--muted);
  font-size: 0.82rem;
}

.legal-content a {
  color: #111111;
  font-weight: 600;
  text-underline-offset: 0.2em;
}

.legal-content a:hover {
  text-decoration-thickness: 2px;
}

.privacy-data-list {
  margin: 0;
  padding-left: 1.4rem;
}

.privacy-data-list li + li {
  margin-top: 0.8rem;
}

.legal-content {
  padding: 2.5rem;
  background: #ffffff;
}

.legal-content section + section {
  margin-top: 2rem;
}

.legal-content h2 {
  margin: 0 0 0.6rem;
  color: var(--ink);
  font-size: 1.15rem;
}

.legal-content p {
  margin: 0;
  color: var(--muted);
}

.legal-content p + p {
  margin-top: 0.75rem;
}

@media (max-width: 600px) {
  .page-shell {
    width: min(100% - 1rem, 760px);
    padding: 0.5rem 0;
  }

  .hero-actions {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .header-cta {
    display: flex;
    align-items: center;
    justify-content: center;
    padding-inline: 0.65rem;
    text-align: center;
  }

  .petition {
    border-radius: 0;
  }

  .petition__header,
  .problem-section,
  .signature-form,
  .legal-content {
    padding: 1.5rem;
  }

  .page-end-actions {
    padding: 1rem 1.5rem 1.5rem;
  }

  .success-modal__content {
    padding: 2rem 1.5rem 1.5rem;
  }

  .back-nav {
    padding: 1rem 1.5rem;
  }

  .sound-bar__scale {
    font-size: 0.6rem;
  }

  .sound-meter__readout {
    align-items: flex-end;
    gap: 0.6rem;
  }

  .sound-meter__details time {
    font-size: 0.62rem;
  }

  .form-grid {
    grid-template-columns: 1fr;
    gap: 0.85rem;
  }

  .field--full {
    grid-column: auto;
  }
}

@media (prefers-reduced-motion: no-preference) {
  .header-cta,
  button,
  input {
    transition: background-color 160ms ease, border-color 160ms ease,
      color 160ms ease, outline-color 160ms ease, transform 100ms ease;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .sound-bar__allowed,
  .sound-bar__excess,
  .sound-bar__remaining,
  .sound-bar__peak,
  .sound-bar__current-marker {
    transition: none;
  }
}