:root {
  --color-petrol-900: #0F2A33;
  --color-petrol-800: #1A3A4A;
  --color-ice-100: #E8F4FA;
  --color-ice-200: #A8D8EA;
  --color-ice-300: #B8D8E8;
  --color-white: #FFFFFF;
  --color-ember-500: #FF7F50;
  --color-ember-600: #E5673A;

  --font-heading: "Archivo Condensed", sans-serif;
  --font-body: "Inter", sans-serif;
  --font-mono: "IBM Plex Mono", monospace;

  --text-display: clamp(2.5rem, 5vw + 1rem, 3rem);
  --text-h1: clamp(2.125rem, 4vw + 0.75rem, 2.5rem);
  --text-h2: clamp(1.75rem, 3vw + 0.5rem, 2rem);
  --text-h3: clamp(1.375rem, 2vw + 0.5rem, 1.5rem);
  --text-h4: clamp(1.125rem, 1.5vw + 0.5rem, 1.25rem);
  --text-body: 1rem;
  --text-small: 0.875rem;
  --text-caption: 0.75rem;

  --leading-display: 1.1667;
  --leading-h1: 1.2;
  --leading-h2: 1.25;
  --leading-h3: 1.3333;
  --leading-h4: 1.4;
  --leading-body: 1.5;
  --leading-small: 1.4286;
  --leading-caption: 1.3333;

  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;
  --space-7: 48px;
  --space-8: 64px;
  --space-9: 96px;
  --space-10: 128px;

  --container-max: 1200px;
  --container-padding: clamp(16px, 4vw, 32px);

  --surface-card: rgba(232, 244, 250, 0.08);
  --surface-card-strong: rgba(232, 244, 250, 0.14);
  --surface-frosted: rgba(168, 216, 234, 0.12);
  --surface-highlight: var(--color-ice-100);

  --border-thin: 1px solid var(--color-ice-300);
  --border-frosted: 1px solid rgba(184, 216, 232, 0.35);

  --shadow-card: 0 4px 12px rgba(0, 0, 0, 0.2);
  --shadow-card-raised: 0 8px 24px rgba(0, 0, 0, 0.28);

  --radius-none: 0px;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;

  --transition-fast: 160ms ease;
  --transition-base: 240ms ease;
}

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

* {
  margin: 0;
}

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

body {
  min-height: 100vh;
  background-color: var(--color-petrol-900);
  color: var(--color-white);
  font-family: var(--font-body);
  font-size: var(--text-body);
  line-height: var(--leading-body);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  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;
  padding: 0;
}

a {
  color: var(--color-ice-200);
  text-decoration: none;
  transition: color var(--transition-fast), text-decoration-color var(--transition-fast);
}

a:hover {
  color: var(--color-ice-100);
  text-decoration: underline;
  text-decoration-color: var(--color-ice-200);
  text-underline-offset: 3px;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-white);
  overflow-wrap: break-word;
  text-wrap: balance;
}

h1 {
  font-size: var(--text-h1);
  line-height: var(--leading-h1);
  margin-block-end: var(--space-5);
}

h2 {
  font-size: var(--text-h2);
  line-height: var(--leading-h2);
  margin-block-end: var(--space-4);
}

h3 {
  font-size: var(--text-h3);
  line-height: var(--leading-h3);
  margin-block-end: var(--space-3);
}

h4 {
  font-size: var(--text-h4);
  line-height: var(--leading-h4);
  margin-block-end: var(--space-3);
}

h5 {
  font-size: var(--text-body);
  line-height: var(--leading-body);
  margin-block-end: var(--space-2);
}

h6 {
  font-size: var(--text-small);
  line-height: var(--leading-small);
  margin-block-end: var(--space-2);
}

p {
  font-size: var(--text-body);
  line-height: var(--leading-body);
  margin-block-end: var(--space-4);
  overflow-wrap: break-word;
}

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

ul,
ol {
  margin-block-end: var(--space-4);
  padding-inline-start: var(--space-5);
}

ul:last-child,
ol:last-child {
  margin-block-end: 0;
}

li {
  line-height: var(--leading-body);
}

blockquote {
  margin-block-end: var(--space-4);
  padding-inline-start: var(--space-4);
  border-inline-start: 3px solid var(--color-ice-200);
  color: var(--color-ice-100);
  font-style: italic;
}

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

figure {
  margin-block-end: var(--space-4);
}

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

figcaption {
  font-size: var(--text-small);
  line-height: var(--leading-small);
  color: var(--color-ice-200);
  margin-block-start: var(--space-2);
}

code,
kbd,
samp,
pre {
  font-family: var(--font-mono);
  font-size: 0.875em;
}

pre {
  background-color: var(--color-petrol-800);
  border: var(--border-frosted);
  border-radius: var(--radius-md);
  padding: var(--space-4);
  overflow-x: auto;
  margin-block-end: var(--space-4);
}

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

hr {
  border: none;
  border-block-start: 1px solid var(--color-ice-300);
  margin-block: var(--space-6);
}

table {
  width: 100%;
  border-collapse: collapse;
  margin-block-end: var(--space-4);
  font-size: var(--text-small);
}

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

th,
td {
  padding: var(--space-3) var(--space-4);
  text-align: start;
  border-block-end: 1px solid var(--color-ice-300);
}

th {
  font-family: var(--font-heading);
  font-weight: 700;
  color: var(--color-ice-100);
  background-color: rgba(168, 216, 234, 0.06);
}

fieldset {
  border: var(--border-frosted);
  border-radius: var(--radius-md);
  padding: var(--space-4);
  margin-block-end: var(--space-4);
}

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

legend {
  font-family: var(--font-heading);
  font-weight: 700;
  padding-inline: var(--space-2);
  color: var(--color-ice-100);
}

label {
  display: block;
  font-size: var(--text-small);
  font-weight: 500;
  margin-block-end: var(--space-2);
  color: var(--color-ice-100);
}

input,
select,
textarea {
  width: 100%;
  background-color: rgba(232, 244, 250, 0.06);
  border: 1px solid var(--color-ice-300);
  border-radius: var(--radius-sm);
  padding: var(--space-3) var(--space-4);
  color: var(--color-white);
  font-size: var(--text-body);
  line-height: var(--leading-body);
  transition: border-color var(--transition-fast), background-color var(--transition-fast);
}

input::placeholder,
textarea::placeholder {
  color: rgba(232, 244, 250, 0.5);
}

input:focus,
select:focus,
textarea:focus {
  outline: none;
  border-color: var(--color-ice-200);
  background-color: rgba(232, 244, 250, 0.1);
}

select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%23A8D8EA' d='M6 8L0 0h12z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right var(--space-4) center;
  padding-inline-end: var(--space-7);
}

textarea {
  min-height: 120px;
  resize: vertical;
}

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

.surface-card {
  background-color: var(--surface-card);
  border: var(--border-frosted);
  border-radius: var(--radius-md);
  padding: var(--space-4);
  box-shadow: var(--shadow-card);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.surface-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-card-raised);
}

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

.surface-panel {
  background-color: var(--surface-card-strong);
  border: var(--border-frosted);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  box-shadow: var(--shadow-card);
}

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

.surface-frosted {
  background-color: var(--surface-frosted);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: var(--border-frosted);
  border-radius: var(--radius-md);
}

.surface-highlight {
  background-color: var(--surface-highlight);
  color: var(--color-petrol-900);
  border-radius: var(--radius-md);
  padding: var(--space-4);
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-sm);
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: var(--text-body);
  line-height: var(--leading-body);
  text-decoration: none;
  white-space: nowrap;
  transition: background-color var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast), transform var(--transition-fast);
  min-width: 0;
}

.btn:hover {
  text-decoration: none;
}

.btn:active {
  transform: scale(0.98);
}

.btn-primary {
  background-color: var(--color-ember-500);
  color: var(--color-white);
  border: 1px solid var(--color-ember-500);
}

.btn-primary:hover {
  background-color: var(--color-ember-600);
  border-color: var(--color-ember-600);
  color: var(--color-white);
}

.btn-secondary {
  background-color: transparent;
  color: var(--color-ice-200);
  border: 1px solid var(--color-ice-200);
}

.btn-secondary:hover {
  background-color: rgba(168, 216, 234, 0.1);
  border-color: var(--color-ice-100);
  color: var(--color-ice-100);
}

.btn-ghost {
  background-color: transparent;
  color: var(--color-ice-200);
  border: 1px solid transparent;
}

.btn-ghost:hover {
  background-color: rgba(168, 216, 234, 0.08);
  color: var(--color-ice-100);
}

.btn-sm {
  padding: var(--space-1) var(--space-3);
  font-size: var(--text-small);
  line-height: var(--leading-small);
}

.btn-lg {
  padding: var(--space-3) var(--space-5);
  font-size: var(--text-h4);
  line-height: var(--leading-h4);
}

.flex-row {
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: var(--space-3);
  min-width: 0;
}

.flex-row > * {
  min-width: 0;
  flex-shrink: 1;
}

.flex-col {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  min-width: 0;
}

.flex-col > * {
  min-width: 0;
  flex-shrink: 1;
}

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

.flex-center {
  justify-content: center;
  align-items: center;
}

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

.flex-start {
  justify-content: flex-start;
  align-items: center;
}

.flex-end {
  justify-content: flex-end;
  align-items: center;
}

.flex-1 {
  flex: 1 1 0%;
  min-width: 0;
}

.flex-auto {
  flex: 0 0 auto;
  min-width: 0;
}

.flex-grow {
  flex: 1 0 auto;
  min-width: 0;
}

.mono {
  font-family: var(--font-mono);
}

.text-small {
  font-size: var(--text-small);
  line-height: var(--leading-small);
}

.text-caption {
  font-size: var(--text-caption);
  line-height: var(--leading-caption);
}

.text-display {
  font-size: var(--text-display);
  line-height: var(--leading-display);
  font-family: var(--font-heading);
  font-weight: 700;
}

.text-ice {
  color: var(--color-ice-200);
}

.text-ember {
  color: var(--color-ember-500);
}

.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;
}

@media (max-width: 768px) {
  :root {
    --text-display: clamp(2rem, 6vw + 0.5rem, 2.5rem);
    --text-h1: clamp(1.75rem, 5vw + 0.5rem, 2.125rem);
    --text-h2: clamp(1.5rem, 4vw + 0.5rem, 1.75rem);
    --text-h3: clamp(1.25rem, 3vw + 0.5rem, 1.375rem);
    --text-h4: clamp(1.0625rem, 2vw + 0.5rem, 1.125rem);
  }

  .container {
    padding-inline: var(--space-4);
  }

  .surface-panel {
    padding: var(--space-4);
  }

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

@media (max-width: 480px) {
  :root {
    --text-display: clamp(1.75rem, 8vw + 0.25rem, 2rem);
    --text-h1: clamp(1.5rem, 7vw + 0.25rem, 1.75rem);
    --text-h2: clamp(1.375rem, 6vw + 0.25rem, 1.5rem);
    --text-h3: clamp(1.125rem, 5vw + 0.25rem, 1.25rem);
    --text-h4: clamp(1rem, 4vw + 0.25rem, 1.0625rem);
  }

  .container {
    padding-inline: var(--space-3);
  }

  .surface-card {
    padding: var(--space-3);
  }

  .surface-panel {
    padding: var(--space-3);
  }

  .btn {
    width: 100%;
    justify-content: center;
  }

  .btn-sm {
    width: auto;
  }
}