:root {
  --color-petrol-900: #0B1F1C;
  --color-petrol-800: #12302B;
  --color-petrol-700: #1E4A42;
  --color-felt-600: #1F6B57;
  --color-felt-500: #2A8A70;
  --color-felt-100: #E6F2EE;
  --color-amber-500: #D99A3D;
  --color-amber-300: #F0C97A;
  --color-ivory-50: #F7F5EF;
  --color-ivory-100: #EFEBE1;
  --color-ink-900: #14201D;
  --color-ink-600: #4A5A55;
  --color-line-300: #D8D2C4;
  --color-error-600: #A33B2E;

  --font-heading: "Fraunces", serif;
  --font-body: "Inter", sans-serif;

  --text-display-size: clamp(2.25rem, 5vw, 3.5rem);
  --text-display-leading: 1.05;
  --text-display-tracking: -0.02em;
  --text-display-weight: 600;

  --text-h1-size: clamp(2rem, 4vw, 2.625rem);
  --text-h1-leading: 1.12;
  --text-h1-tracking: -0.015em;
  --text-h1-weight: 600;

  --text-h2-size: clamp(1.625rem, 3vw, 2rem);
  --text-h2-leading: 1.18;
  --text-h2-tracking: -0.01em;
  --text-h2-weight: 500;

  --text-h3-size: clamp(1.375rem, 2.5vw, 1.5rem);
  --text-h3-leading: 1.25;
  --text-h3-tracking: 0;
  --text-h3-weight: 500;

  --text-h4-size: 1.1875rem;
  --text-h4-leading: 1.3;
  --text-h4-tracking: 0.01em;
  --text-h4-weight: 600;

  --text-body-lg-size: 1.125rem;
  --text-body-lg-leading: 1.6;
  --text-body-lg-tracking: 0;
  --text-body-lg-weight: 400;

  --text-body-size: 1rem;
  --text-body-leading: 1.65;
  --text-body-tracking: 0;
  --text-body-weight: 400;

  --text-small-size: 0.875rem;
  --text-small-leading: 1.5;
  --text-small-tracking: 0.01em;
  --text-small-weight: 400;

  --text-caption-size: 0.75rem;
  --text-caption-leading: 1.4;
  --text-caption-tracking: 0.06em;
  --text-caption-weight: 500;

  --text-button-size: 0.9375rem;
  --text-button-leading: 1;
  --text-button-tracking: 0.04em;
  --text-button-weight: 600;

  --space-2xs: 0.25rem;
  --space-xs: 0.5rem;
  --space-sm: 0.75rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  --space-4xl: 6rem;
  --space-5xl: 8rem;

  --container-max: 75rem;
  --container-padding-mobile: 1.5rem;
  --container-padding-tablet: 2.5rem;
  --container-padding-desktop: 4rem;
  --container-narrow-max: 42.5rem;

  --surface-page-light: var(--color-ivory-50);
  --surface-page-dark: var(--color-petrol-900);
  --surface-card-light: var(--color-ivory-50);
  --surface-card-dark: var(--color-petrol-800);
  --surface-input: var(--color-ivory-100);

  --border-light: 1px solid var(--color-line-300);
  --border-dark: 1px solid var(--color-petrol-700);

  --shadow-modal: 0 12px 32px rgba(11, 31, 28, 0.18);

  --radius-0: 0;
  --radius-sm: 2px;
  --radius-md: 4px;
  --radius-lg: 8px;

  --transition-fast: 160ms ease-out;
  --transition-drawer: 200ms ease-out;
  --transition-reveal: 240ms ease-out;

  --focus-ring-light: 2px solid var(--color-felt-600);
  --focus-ring-dark: 2px solid var(--color-amber-500);
  --focus-offset: 2px;
}

*,
*::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: var(--text-body-size);
  font-weight: var(--text-body-weight);
  line-height: var(--text-body-leading);
  letter-spacing: var(--text-body-tracking);
  color: var(--color-ink-900);
  background-color: var(--surface-page-light);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

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

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

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

a {
  color: var(--color-felt-600);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-felt-500);
}

ul,
ol {
  list-style: none;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-heading);
  color: var(--color-ink-900);
  overflow-wrap: break-word;
  text-wrap: balance;
}

h1 {
  font-size: var(--text-h1-size);
  line-height: var(--text-h1-leading);
  letter-spacing: var(--text-h1-tracking);
  font-weight: var(--text-h1-weight);
  margin-block-end: var(--space-lg);
}

h2 {
  font-size: var(--text-h2-size);
  line-height: var(--text-h2-leading);
  letter-spacing: var(--text-h2-tracking);
  font-weight: var(--text-h2-weight);
  margin-block-end: var(--space-lg);
}

h3 {
  font-size: var(--text-h3-size);
  line-height: var(--text-h3-leading);
  letter-spacing: var(--text-h3-tracking);
  font-weight: var(--text-h3-weight);
  margin-block-end: var(--space-md);
}

h4 {
  font-family: var(--font-body);
  font-size: var(--text-h4-size);
  line-height: var(--text-h4-leading);
  letter-spacing: var(--text-h4-tracking);
  font-weight: var(--text-h4-weight);
  margin-block-end: var(--space-sm);
}

p {
  font-size: var(--text-body-size);
  line-height: var(--text-body-leading);
  letter-spacing: var(--text-body-tracking);
  margin-block-end: var(--space-md);
}

p:last-child {
  margin-block-end: 0;
}

blockquote {
  font-family: var(--font-heading);
  font-size: var(--text-h3-size);
  line-height: var(--text-h3-leading);
  letter-spacing: var(--text-h3-tracking);
  font-weight: var(--text-h3-weight);
  color: var(--color-ink-900);
  margin-block-end: var(--space-lg);
}

blockquote:last-child {
  margin-block-end: 0;
}

small {
  font-size: var(--text-small-size);
  line-height: var(--text-small-leading);
  letter-spacing: var(--text-small-tracking);
}

strong {
  font-weight: 600;
}

em {
  font-style: italic;
}

hr {
  border: none;
  border-top: var(--border-light);
  margin-block: var(--space-xl);
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--text-body-size);
  line-height: var(--text-body-leading);
}

th,
td {
  text-align: start;
  padding: var(--space-sm) var(--space-md);
  border-block-end: var(--border-light);
}

th {
  font-weight: 600;
  color: var(--color-ink-900);
  background-color: var(--color-ivory-100);
}

caption {
  font-size: var(--text-caption-size);
  line-height: var(--text-caption-leading);
  letter-spacing: var(--text-caption-tracking);
  text-transform: uppercase;
  color: var(--color-ink-600);
  text-align: start;
  margin-block-end: var(--space-sm);
}

label {
  display: block;
  font-size: var(--text-small-size);
  font-weight: 500;
  line-height: var(--text-small-leading);
  letter-spacing: var(--text-small-tracking);
  color: var(--color-ink-900);
  margin-block-end: var(--space-2xs);
}

input,
select,
textarea {
  width: 100%;
  padding: var(--space-sm) var(--space-md);
  font-size: var(--text-body-size);
  line-height: var(--text-body-leading);
  letter-spacing: var(--text-body-tracking);
  color: var(--color-ink-900);
  background-color: var(--surface-input);
  border: var(--border-light);
  border-radius: var(--radius-sm);
  transition: border-color var(--transition-fast);
}

input:focus,
select:focus,
textarea:focus {
  outline: var(--focus-ring-light);
  outline-offset: var(--focus-offset);
  border-color: var(--color-felt-600);
}

input::placeholder,
textarea::placeholder {
  color: var(--color-ink-600);
  opacity: 1;
}

textarea {
  min-height: 8rem;
  resize: vertical;
}

fieldset {
  border: var(--border-light);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  margin-block-end: var(--space-lg);
}

legend {
  font-size: var(--text-small-size);
  font-weight: 600;
  padding-inline: var(--space-xs);
}

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

.surface-dark {
  background-color: var(--surface-page-dark);
  color: var(--color-ivory-50);
}

.surface-dark h1,
.surface-dark h2,
.surface-dark h3,
.surface-dark h4,
.surface-dark h5,
.surface-dark h6 {
  color: var(--color-ivory-50);
}

.surface-dark p {
  color: var(--color-ivory-50);
}

.surface-dark a {
  color: var(--color-ivory-50);
}

.surface-dark a:hover {
  color: var(--color-amber-300);
}

.surface-dark small {
  color: var(--color-ivory-50);
}

.surface-dark input,
.surface-dark select,
.surface-dark textarea {
  color: var(--color-ivory-50);
  background-color: var(--color-petrol-800);
  border: var(--border-dark);
}

.surface-dark input:focus,
.surface-dark select:focus,
.surface-dark textarea:focus {
  outline: var(--focus-ring-dark);
  outline-offset: var(--focus-offset);
  border-color: var(--color-amber-500);
}

.surface-dark input::placeholder,
.surface-dark textarea::placeholder {
  color: var(--color-ink-600);
}

.surface-dark label {
  color: var(--color-ivory-50);
}

.surface-dark hr {
  border-top: var(--border-dark);
}

.surface-dark th,
.surface-dark td {
  border-block-end: var(--border-dark);
}

.surface-dark th {
  background-color: var(--color-petrol-800);
  color: var(--color-ivory-50);
}

.surface-dark caption {
  color: var(--color-amber-300);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-xs);
  padding: 0.875rem 1.25rem;
  font-family: var(--font-body);
  font-size: var(--text-button-size);
  font-weight: var(--text-button-weight);
  line-height: var(--text-button-leading);
  letter-spacing: var(--text-button-tracking);
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  transition: background-color var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast);
  min-width: 0;
  white-space: nowrap;
}

.btn:active {
  transform: translateY(1px);
}

.btn:focus-visible {
  outline: var(--focus-ring-light);
  outline-offset: var(--focus-offset);
}

.btn-primary {
  background-color: var(--color-amber-500);
  color: var(--color-ink-900);
  border-color: var(--color-amber-500);
}

.btn-primary:hover {
  background-color: var(--color-amber-300);
  border-color: var(--color-amber-300);
  color: var(--color-ink-900);
}

.btn-secondary {
  background-color: transparent;
  color: var(--color-felt-600);
  border-color: var(--color-felt-600);
}

.btn-secondary:hover {
  background-color: var(--color-felt-100);
  border-color: var(--color-felt-500);
  color: var(--color-felt-500);
}

.surface-dark .btn-primary {
  background-color: var(--color-amber-500);
  color: var(--color-ink-900);
  border-color: var(--color-amber-500);
}

.surface-dark .btn-primary:hover {
  background-color: var(--color-amber-300);
  border-color: var(--color-amber-300);
  color: var(--color-ink-900);
}

.surface-dark .btn-secondary {
  background-color: transparent;
  color: var(--color-ivory-50);
  border-color: var(--color-felt-600);
}

.surface-dark .btn-secondary:hover {
  background-color: var(--color-petrol-700);
  border-color: var(--color-amber-500);
  color: var(--color-amber-300);
}

.surface-dark .btn:focus-visible {
  outline: var(--focus-ring-dark);
  outline-offset: var(--focus-offset);
}

.card {
  background-color: var(--surface-card-light);
  border: var(--border-light);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
}

.surface-dark .card {
  background-color: var(--surface-card-dark);
  border: var(--border-dark);
}

.card > :last-child {
  margin-block-end: 0;
}

.section {
  padding-block: var(--space-4xl);
}

.section-tight {
  padding-block: var(--space-2xl);
}

.section-spacious {
  padding-block: var(--space-5xl);
}

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

.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-md);
  z-index: 9999;
  padding: var(--space-sm) var(--space-lg);
  background-color: var(--color-amber-500);
  color: var(--color-ink-900);
  font-weight: 600;
  border-radius: var(--radius-sm);
  transition: top var(--transition-fast);
}

.skip-link:focus {
  top: var(--space-md);
}

:focus-visible {
  outline: var(--focus-ring-light);
  outline-offset: var(--focus-offset);
}

.surface-dark :focus-visible {
  outline: var(--focus-ring-dark);
  outline-offset: var(--focus-offset);
}

::selection {
  background-color: var(--color-amber-300);
  color: var(--color-ink-900);
}

.surface-dark ::selection {
  background-color: var(--color-amber-500);
  color: var(--color-ink-900);
}

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

  }

@media (min-width: 1200px) {
  .container {
    padding-inline: var(--container-padding-desktop);
  }

  }

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

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