@layer reset, base, primitives;

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

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

  body {
    min-height: 100vh;
    min-height: 100dvh;
  }

  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;
  }

  ul, ol {
    list-style: none;
  }

  a {
    text-decoration: none;
    color: inherit;
  }

  table {
    border-collapse: collapse;
    border-spacing: 0;
  }

  h1, h2, h3, h4, h5, h6 {
    font-size: inherit;
    font-weight: inherit;
  }

  p {
    overflow-wrap: break-word;
  }

  strong, b {
    font-weight: 700;
  }

  em, i {
    font-style: italic;
  }

  blockquote, q {
    quotes: none;
  }

  blockquote::before, blockquote::after,
  q::before, q::after {
    content: '';
    content: none;
  }
}

@layer base {
  :root {
    --color-track-dark: #202327;
    --color-signal-orange: #F26A2E;
    --color-asphalt-light: #F3F5F4;
    --color-steel-gray: #667078;
    --color-telemetry-blue: #3D8FD6;
    --color-warning-yellow: #E8C547;
    --color-card-dark: #2A2E33;
    --color-card-light: #FFFFFF;
    --color-text-on-dark: #F3F5F4;
    --color-text-on-light: #202327;
    --color-text-secondary-on-dark: #667078;
    --color-text-secondary-on-light: #667078;
    --color-border: #667078;
    --color-focus-ring: #F26A2E;
    --color-overlay: rgba(0, 0, 0, 0.6);

    --font-heading: "Orbitron", "Inter", sans-serif;
    --font-body: "Inter", "Helvetica Neue", Arial, sans-serif;

    --text-display-size: clamp(2.25rem, 5vw + 1rem, 3.5rem);
    --text-display-line-height: 1.14;
    --text-display-weight: 700;
    --text-display-letter-spacing: -0.02em;

    --text-h1-size: clamp(1.875rem, 3.5vw + 0.75rem, 2.5rem);
    --text-h1-line-height: 1.2;
    --text-h1-weight: 700;
    --text-h1-letter-spacing: -0.01em;

    --text-h2-size: clamp(1.5rem, 2.5vw + 0.5rem, 2rem);
    --text-h2-line-height: 1.25;
    --text-h2-weight: 600;
    --text-h2-letter-spacing: -0.01em;

    --text-h3-size: clamp(1.25rem, 1.5vw + 0.5rem, 1.5rem);
    --text-h3-line-height: 1.33;
    --text-h3-weight: 600;
    --text-h3-letter-spacing: 0em;

    --text-h4-size: clamp(1.125rem, 1vw + 0.5rem, 1.25rem);
    --text-h4-line-height: 1.4;
    --text-h4-weight: 600;
    --text-h4-letter-spacing: 0em;

    --text-body-large-size: 1.125rem;
    --text-body-large-line-height: 1.55;
    --text-body-large-weight: 400;

    --text-body-size: 1rem;
    --text-body-line-height: 1.5;
    --text-body-weight: 400;

    --text-caption-size: 0.875rem;
    --text-caption-line-height: 1.43;
    --text-caption-weight: 400;

    --text-label-size: 0.75rem;
    --text-label-line-height: 1.33;
    --text-label-weight: 600;
    --text-label-letter-spacing: 0.08em;
    --text-label-transform: uppercase;

    --space-0: 0;
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-12: 3rem;
    --space-16: 4rem;
    --space-20: 5rem;
    --space-24: 6rem;

    --container-max-width: 1200px;
    --container-padding-mobile: 24px;
    --container-padding-desktop: 48px;

    --section-spacing-mobile: var(--space-12);
    --section-spacing-desktop: var(--space-20);

    --card-padding-mobile: var(--space-4);
    --card-padding-desktop: var(--space-6);

    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-pill: 999px;

    --shadow-elevated: 0 2px 8px rgba(0, 0, 0, 0.1);
    --shadow-card-hover: 0 4px 16px rgba(0, 0, 0, 0.15);

    --border-width: 1px;
    --border-style: solid;
    --border-color: var(--color-steel-gray);
    --border-standard: var(--border-width) var(--border-style) var(--border-color);

    --transition-fast: 150ms ease-in-out;
    --transition-base: 200ms ease-in-out;
  }

  html {
    font-family: var(--font-body);
    font-size: 100%;
    line-height: var(--text-body-line-height);
    color: var(--color-text-on-dark);
    background-color: var(--color-track-dark);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
  }

  body {
    font-size: var(--text-body-size);
    font-weight: var(--text-body-weight);
    line-height: var(--text-body-line-height);
    color: var(--color-text-on-dark);
    background-color: var(--color-track-dark);
    overflow-x: hidden;
  }

  h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    color: var(--color-text-on-dark);
    margin-block-end: var(--space-4);
  }

  h1 {
    font-size: var(--text-h1-size);
    line-height: var(--text-h1-line-height);
    font-weight: var(--text-h1-weight);
    letter-spacing: var(--text-h1-letter-spacing);
  }

  h2 {
    font-size: var(--text-h2-size);
    line-height: var(--text-h2-line-height);
    font-weight: var(--text-h2-weight);
    letter-spacing: var(--text-h2-letter-spacing);
  }

  h3 {
    font-size: var(--text-h3-size);
    line-height: var(--text-h3-line-height);
    font-weight: var(--text-h3-weight);
    letter-spacing: var(--text-h3-letter-spacing);
  }

  h4 {
    font-size: var(--text-h4-size);
    line-height: var(--text-h4-line-height);
    font-weight: var(--text-h4-weight);
    letter-spacing: var(--text-h4-letter-spacing);
  }

  h5, h6 {
    font-size: var(--text-h4-size);
    line-height: var(--text-h4-line-height);
    font-weight: 600;
    letter-spacing: 0em;
  }

  p {
    font-size: var(--text-body-size);
    line-height: var(--text-body-line-height);
    font-weight: var(--text-body-weight);
    margin-block-end: var(--space-4);
  }

  ul, ol {
    margin-block-end: var(--space-4);
    padding-inline-start: var(--space-6);
  }

  ul {
    list-style: disc;
  }

  ol {
    list-style: decimal;
  }

  blockquote {
    margin-block-end: var(--space-4);
    padding-inline-start: var(--space-6);
    border-inline-start: 3px solid var(--color-signal-orange);
    color: var(--color-text-secondary-on-dark);
  }

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

  figcaption {
    font-size: var(--text-caption-size);
    line-height: var(--text-caption-line-height);
    color: var(--color-text-secondary-on-dark);
    margin-block-start: var(--space-2);
  }

  hr {
    border: none;
    border-top: var(--border-standard);
    margin-block: var(--space-8);
  }

  code, pre {
    font-family: "SF Mono", "Cascadia Code", "Roboto Mono", monospace;
    font-size: 0.9em;
  }

  pre {
    background-color: var(--color-card-dark);
    border: var(--border-standard);
    border-radius: var(--radius-md);
    padding: var(--space-4);
    overflow-x: auto;
    margin-block-end: var(--space-4);
  }

  code {
    background-color: var(--color-card-dark);
    padding: var(--space-1) var(--space-2);
    border-radius: var(--radius-sm);
  }

  a {
    color: var(--color-telemetry-blue);
    text-decoration: underline;
    text-underline-offset: 2px;
    transition: color var(--transition-fast);
  }

  a:hover {
    color: var(--color-signal-orange);
  }

  a:focus-visible {
    outline: 2px solid var(--color-focus-ring);
    outline-offset: 2px;
    border-radius: var(--radius-sm);
  }

  img {
    border-radius: var(--radius-md);
  }

  input, textarea, select {
    font-family: var(--font-body);
    font-size: var(--text-body-size);
    line-height: var(--text-body-line-height);
    color: var(--color-text-on-dark);
    background-color: var(--color-card-dark);
    border: var(--border-standard);
    border-radius: var(--radius-sm);
    padding: var(--space-3) var(--space-4);
    width: 100%;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  }

  input::placeholder, textarea::placeholder {
    color: var(--color-text-secondary-on-dark);
  }

  input:focus, textarea:focus, select:focus {
    outline: none;
    border-color: var(--color-signal-orange);
    box-shadow: 0 0 0 2px var(--color-focus-ring);
  }

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

  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 d='M1 1l5 5 5-5' stroke='%23667078' stroke-width='2' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right var(--space-3) center;
    padding-inline-end: var(--space-8);
  }

  label {
    display: block;
    font-size: var(--text-label-size);
    line-height: var(--text-label-line-height);
    font-weight: var(--text-label-weight);
    letter-spacing: var(--text-label-letter-spacing);
    text-transform: var(--text-label-transform);
    color: var(--color-text-secondary-on-dark);
    margin-block-end: var(--space-2);
  }

  button:focus-visible,
  [role="button"]:focus-visible {
    outline: 2px solid var(--color-focus-ring);
    outline-offset: 2px;
  }

  ::selection {
    background-color: var(--color-signal-orange);
    color: var(--color-track-dark);
  }

  :focus-visible {
    outline: 2px solid var(--color-focus-ring);
    outline-offset: 2px;
  }
}

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

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

  .section {
    padding-block: var(--section-spacing-mobile);
  }

  @media (min-width: 768px) {
    .section {
      padding-block: var(--section-spacing-desktop);
    }
  }

  .card {
    background-color: var(--color-card-dark);
    border: var(--border-standard);
    border-radius: var(--radius-md);
    padding: var(--card-padding-mobile);
    transition: transform var(--transition-fast), border-color var(--transition-fast), box-shadow var(--transition-fast);
  }

  @media (min-width: 768px) {
    .card {
      padding: var(--card-padding-desktop);
    }
  }

  .card:hover {
    transform: translateY(-2px);
    border-color: var(--color-signal-orange);
    box-shadow: var(--shadow-card-hover);
  }

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

  .panel {
    background-color: var(--color-card-dark);
    border: var(--border-standard);
    border-radius: var(--radius-lg);
    padding: var(--card-padding-mobile);
  }

  @media (min-width: 768px) {
    .panel {
      padding: var(--card-padding-desktop);
    }
  }

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

  .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    font-family: var(--font-body);
    font-size: var(--text-label-size);
    line-height: var(--text-label-line-height);
    font-weight: var(--text-label-weight);
    letter-spacing: var(--text-label-letter-spacing);
    text-transform: var(--text-label-transform);
    text-decoration: none;
    border-radius: var(--radius-sm);
    padding: var(--space-3) var(--space-6);
    min-height: 44px;
    transition: background-color var(--transition-fast), transform var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast);
    border: 1px solid transparent;
    white-space: nowrap;
  }

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

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

  .btn-primary {
    background-color: var(--color-signal-orange);
    color: var(--color-track-dark);
    border-color: var(--color-signal-orange);
  }

  .btn-primary:hover {
    background-color: #d95a24;
    border-color: #d95a24;
    color: var(--color-track-dark);
  }

  .btn-secondary {
    background-color: var(--color-telemetry-blue);
    color: var(--color-asphalt-light);
    border-color: var(--color-telemetry-blue);
  }

  .btn-secondary:hover {
    background-color: #2f7ab8;
    border-color: #2f7ab8;
    color: var(--color-asphalt-light);
  }

  .btn-outline {
    background-color: transparent;
    color: var(--color-text-on-dark);
    border-color: var(--color-steel-gray);
  }

  .btn-outline:hover {
    border-color: var(--color-signal-orange);
    color: var(--color-signal-orange);
  }

  .badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-1);
    font-size: var(--text-label-size);
    line-height: var(--text-label-line-height);
    font-weight: var(--text-label-weight);
    letter-spacing: var(--text-label-letter-spacing);
    text-transform: var(--text-label-transform);
    border-radius: var(--radius-pill);
    padding: var(--space-1) var(--space-3);
    white-space: nowrap;
  }

  .badge-warning {
    background-color: var(--color-warning-yellow);
    color: var(--color-track-dark);
  }

  .badge-info {
    background-color: var(--color-telemetry-blue);
    color: var(--color-asphalt-light);
  }

  .badge-accent {
    background-color: var(--color-signal-orange);
    color: var(--color-track-dark);
  }

  .badge-neutral {
    background-color: var(--color-steel-gray);
    color: var(--color-asphalt-light);
  }

  .label-technical {
    font-size: var(--text-label-size);
    line-height: var(--text-label-line-height);
    font-weight: var(--text-label-weight);
    letter-spacing: var(--text-label-letter-spacing);
    text-transform: var(--text-label-transform);
    color: var(--color-signal-orange);
    display: inline-block;
    margin-block-end: var(--space-2);
  }

  .label-technical--muted {
    color: var(--color-steel-gray);
  }

  .display {
    font-family: var(--font-heading);
    font-size: var(--text-display-size);
    line-height: var(--text-display-line-height);
    font-weight: var(--text-display-weight);
    letter-spacing: var(--text-display-letter-spacing);
    color: var(--color-text-on-dark);
    margin-block-end: var(--space-4);
  }

  .text-body-large {
    font-size: var(--text-body-large-size);
    line-height: var(--text-body-large-line-height);
    font-weight: var(--text-body-large-weight);
  }

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

  .text-label {
    font-size: var(--text-label-size);
    line-height: var(--text-label-line-height);
    font-weight: var(--text-label-weight);
    letter-spacing: var(--text-label-letter-spacing);
    text-transform: var(--text-label-transform);
  }

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

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

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

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

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

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

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

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

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

  .flex--gap-sm {
    gap: var(--space-2);
  }

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

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

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

  .flex--column > * {
    width: auto;
  }

  .flex--grow {
    flex: 1 1 0;
  }

  .flex--no-shrink {
    flex-shrink: 0;
  }

  .grid-auto {
    display: grid;
    gap: var(--space-4);
    grid-template-columns: repeat(auto-fit, minmax(min(280px, 100%), 1fr));
  }

  .grid-auto > * {
    min-width: 0;
  }

  .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-4);
    z-index: 10000;
    background-color: var(--color-signal-orange);
    color: var(--color-track-dark);
    padding: var(--space-3) var(--space-6);
    border-radius: var(--radius-sm);
    font-weight: 600;
    text-decoration: none;
    transition: top var(--transition-fast);
  }

  .skip-link:focus {
    top: var(--space-4);
  }

  .ratio-16-9 {
    aspect-ratio: 16 / 9;
    overflow: hidden;
    border-radius: var(--radius-md);
    border: var(--border-standard);
  }

  .ratio-4-3 {
    aspect-ratio: 4 / 3;
    overflow: hidden;
    border-radius: var(--radius-md);
    border: var(--border-standard);
  }

  .ratio-16-9 img,
  .ratio-4-3 img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 0;
    border: none;
  }

  .overlay-dark {
    position: relative;
  }

  .overlay-dark::after {
    content: '';
    position: absolute;
    inset: 0;
    background-color: var(--color-overlay);
    border-radius: inherit;
    pointer-events: none;
  }

  .divider-road {
    border: none;
    border-top: 2px dashed var(--color-steel-gray);
    margin-block: var(--space-8);
  }

  .divider-road--accent {
    border-top-color: var(--color-signal-orange);
  }

  .angle-clip {
    clip-path: polygon(0 0, 100% 0, 100% calc(100% - 24px), 0 100%);
  }

  @media (max-width: 767px) {
    .angle-clip {
      clip-path: none;
    }
  }

  .surface-dark {
    background-color: var(--color-track-dark);
    color: var(--color-text-on-dark);
  }

  .surface-light {
    background-color: var(--color-asphalt-light);
    color: var(--color-text-on-light);
  }

  .surface-light h1,
  .surface-light h2,
  .surface-light h3,
  .surface-light h4,
  .surface-light h5,
  .surface-light h6,
  .surface-light .display {
    color: var(--color-text-on-light);
  }

  .surface-light p,
  .surface-light li,
  .surface-light blockquote {
    color: var(--color-text-on-light);
  }

  .surface-light blockquote {
    color: var(--color-text-secondary-on-light);
  }

  .surface-light .card {
    background-color: var(--color-card-light);
    border-color: var(--color-steel-gray);
  }

  .surface-light .panel {
    background-color: var(--color-card-light);
    border-color: var(--color-steel-gray);
  }

  .surface-light input,
  .surface-light textarea,
  .surface-light select {
    background-color: #ffffff;
    color: var(--color-text-on-light);
    border-color: var(--color-steel-gray);
  }

  .surface-light input::placeholder,
  .surface-light textarea::placeholder {
    color: var(--color-text-secondary-on-light);
  }

  .surface-light label {
    color: var(--color-text-secondary-on-light);
  }

  .surface-light .btn-outline {
    color: var(--color-text-on-light);
    border-color: var(--color-steel-gray);
  }

  .surface-light .btn-outline:hover {
    border-color: var(--color-signal-orange);
    color: var(--color-signal-orange);
  }

  .surface-light a {
    color: var(--color-telemetry-blue);
  }

  .surface-light a:hover {
    color: var(--color-signal-orange);
  }

  .surface-light .label-technical {
    color: var(--color-signal-orange);
  }

  .surface-light .label-technical--muted {
    color: var(--color-steel-gray);
  }

  .surface-light .badge-warning {
    background-color: var(--color-warning-yellow);
    color: var(--color-track-dark);
  }

  .surface-light .badge-info {
    background-color: var(--color-telemetry-blue);
    color: var(--color-asphalt-light);
  }

  .surface-light .badge-accent {
    background-color: var(--color-signal-orange);
    color: var(--color-track-dark);
  }

  .surface-light .badge-neutral {
    background-color: var(--color-steel-gray);
    color: var(--color-asphalt-light);
  }

  .surface-light .divider-road {
    border-top-color: var(--color-steel-gray);
  }

  .surface-light .divider-road--accent {
    border-top-color: var(--color-signal-orange);
  }

  .surface-light .text-caption,
  .surface-light figcaption {
    color: var(--color-text-secondary-on-light);
  }

  .surface-light .text-label {
    color: var(--color-text-secondary-on-light);
  }

  .surface-light .ratio-16-9,
  .surface-light .ratio-4-3 {
    border-color: var(--color-steel-gray);
  }

  .content-list {
    list-style: disc;
    padding-inline-start: var(--space-6);
    margin-block-end: var(--space-4);
  }

  .content-list > li {
    margin-block-end: var(--space-2);
  }

  .content-list > li:last-child {
    margin-block-end: 0;
  }

  .content-list > li > ul,
  .content-list > li > ol {
    margin-block-start: var(--space-2);
    margin-block-end: 0;
  }

  .content-list--ordered {
    list-style: decimal;
  }

  .content-list--none {
    list-style: none;
    padding-inline-start: 0;
  }

  .content-list--none > li {
    margin-block-end: 0;
  }
}