:root {
  --color-bg: #f7fafc;
  --color-surface: #ffffff;
  --color-text: #172033;
  --color-muted: #64748b;
  --color-border: #dbe3ea;
  --color-border-strong: #bdcbd7;
  --color-accent: #0f766e;
  --color-accent-hover: #0b5f59;
  --color-accent-soft: #e6fffb;
  --color-blue: #1677ff;
  --color-blue-soft: #eaf3ff;
  --color-error: #b42318;
  --color-error-soft: #fff1f0;
  --color-warning: #9a6700;
  --color-warning-soft: #fff8db;
  --radius-lg: 18px;
  --radius-md: 12px;
  --radius-sm: 9px;
  --shadow-card: 0 16px 42px rgba(15, 23, 42, 0.07);
  --shadow-header: 0 1px 0 rgba(15, 23, 42, 0.06);
  --font-display: "Space Grotesk", "Inter", "Segoe UI", sans-serif;
  --font-body: "Inter", "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --container: 1120px;
  --container-narrow: 760px;
  --transition: 160ms ease;
}

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

html {
  color-scheme: light;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  min-height: 100vh;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body,
button,
input {
  font-family: var(--font-body);
}

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

button,
input {
  font: inherit;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

a {
  color: var(--color-accent);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

a:hover {
  color: var(--color-accent-hover);
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1,
h2,
h3 {
  color: var(--color-text);
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: -0.035em;
  line-height: 1.12;
}

h1 {
  font-size: clamp(2.35rem, 8vw, 4.6rem);
}

h2 {
  font-size: clamp(1.8rem, 5vw, 2.7rem);
}

h3 {
  font-size: 1.08rem;
}

code {
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
}

.container {
  width: min(calc(100% - 32px), var(--container));
  margin-inline: auto;
}

.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: fixed;
  top: 12px;
  left: 12px;
  z-index: 100;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  background: var(--color-text);
  color: #ffffff;
  font-weight: 700;
  transform: translateY(-160%);
  transition: transform var(--transition);
}

.skip-link:focus {
  color: #ffffff;
  transform: translateY(0);
}

:focus-visible {
  outline: 3px solid rgba(22, 119, 255, 0.42);
  outline-offset: 3px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  border-bottom: 1px solid rgba(219, 227, 234, 0.82);
  background: rgba(247, 250, 252, 0.92);
  box-shadow: var(--shadow-header);
  backdrop-filter: blur(14px);
}

.header-inner {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 68px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--color-text);
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: -0.025em;
  text-decoration: none;
}

.brand:hover {
  color: var(--color-accent);
}

.brand-icon {
  width: 34px;
  height: 34px;
}

.menu-toggle {
  display: grid;
  width: 44px;
  height: 44px;
  place-content: center;
  gap: 5px;
  border: 1px solid var(--color-border);
  border-radius: 11px;
  background: var(--color-surface);
  color: var(--color-text);
  cursor: pointer;
}

.menu-toggle-line {
  width: 19px;
  height: 2px;
  border-radius: 2px;
  background: currentColor;
  transition: transform var(--transition), opacity var(--transition);
}

.menu-toggle[aria-expanded="true"] .menu-toggle-line:first-child {
  transform: translateY(7px) rotate(45deg);
}

.menu-toggle[aria-expanded="true"] .menu-toggle-line:nth-child(2) {
  opacity: 0;
}

.menu-toggle[aria-expanded="true"] .menu-toggle-line:last-child {
  transform: translateY(-7px) rotate(-45deg);
}

.primary-navigation {
  position: absolute;
  top: calc(100% + 10px);
  right: 0;
  display: none;
  min-width: 190px;
  padding: 8px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  box-shadow: var(--shadow-card);
}

.primary-navigation.is-open {
  display: grid;
}

.primary-navigation a {
  min-height: 44px;
  padding: 10px 12px;
  border-radius: 8px;
  color: var(--color-muted);
  font-size: 0.94rem;
  font-weight: 650;
  text-decoration: none;
}

.primary-navigation a:hover,
.primary-navigation a[aria-current="page"] {
  background: var(--color-accent-soft);
  color: var(--color-accent);
}

.hero-section {
  padding: 70px 0 30px;
}

.hero-container {
  max-width: 850px;
  text-align: center;
}

.hero-container h1 {
  max-width: 800px;
  margin: 0 auto 22px;
  text-wrap: balance;
}

.hero-container p {
  max-width: 680px;
  margin: 0 auto;
  color: var(--color-muted);
  font-size: clamp(1.04rem, 3vw, 1.22rem);
  line-height: 1.7;
  text-wrap: pretty;
}

.uploader-section {
  padding: 18px 0 32px;
}

.app-container {
  max-width: 920px;
}

.dropzone {
  position: relative;
  display: flex;
  min-height: 245px;
  padding: 34px 24px;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  border: 2px dashed var(--color-border-strong);
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  box-shadow: var(--shadow-card);
  cursor: pointer;
  text-align: center;
  transition: border-color var(--transition), background-color var(--transition), transform var(--transition), box-shadow var(--transition);
}

.dropzone::after {
  position: absolute;
  inset: 8px;
  border: 1px solid transparent;
  border-radius: 13px;
  content: "";
  pointer-events: none;
  transition: border-color var(--transition);
}

.dropzone:hover,
.dropzone.is-dragging {
  border-color: var(--color-accent);
  background: #f8fffe;
  box-shadow: 0 18px 46px rgba(15, 118, 110, 0.12);
  transform: translateY(-2px);
}

.dropzone.is-dragging::after {
  border-color: rgba(15, 118, 110, 0.28);
}

.dropzone-icon {
  display: grid;
  width: 58px;
  height: 58px;
  margin-bottom: 18px;
  place-items: center;
  border-radius: 16px;
  background: var(--color-accent-soft);
  color: var(--color-accent);
}

.dropzone-title {
  margin-bottom: 8px;
  color: var(--color-text);
  font-family: var(--font-display);
  font-size: clamp(1.25rem, 4vw, 1.55rem);
  font-weight: 700;
  letter-spacing: -0.025em;
}

.dropzone-help {
  max-width: 520px;
  color: var(--color-muted);
  font-size: 0.94rem;
}

.status-message {
  min-height: 26px;
  margin: 14px 4px 0;
  color: var(--color-muted);
  font-size: 0.92rem;
  font-weight: 600;
  text-align: center;
}

.status-message:empty {
  margin-top: 8px;
  min-height: 0;
}

.status-message--success {
  color: var(--color-accent);
}

.status-message--warning {
  color: var(--color-warning);
}

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

.file-results {
  margin-top: 18px;
  overflow: hidden;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  box-shadow: var(--shadow-card);
}

.file-results[hidden] {
  display: none;
}

.results-heading {
  display: flex;
  padding: 22px;
  align-items: flex-start;
  justify-content: space-between;
  flex-direction: column;
  gap: 18px;
  border-bottom: 1px solid var(--color-border);
}

.results-heading h2 {
  margin-bottom: 5px;
  font-size: 1.25rem;
}

.results-heading p {
  margin-bottom: 0;
  color: var(--color-muted);
  font-size: 0.9rem;
}

.results-actions {
  display: flex;
  width: 100%;
  gap: 10px;
}

.button {
  display: inline-flex;
  min-height: 44px;
  padding: 10px 17px;
  align-items: center;
  justify-content: center;
  border: 1px solid transparent;
  border-radius: 10px;
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 750;
  line-height: 1.2;
  text-decoration: none;
  cursor: pointer;
  transition: background-color var(--transition), border-color var(--transition), color var(--transition), transform var(--transition);
}

.button:hover {
  transform: translateY(-1px);
}

.button-primary {
  border-color: var(--color-accent);
  background: var(--color-accent);
  color: #ffffff;
}

.button-primary:hover {
  border-color: var(--color-accent-hover);
  background: var(--color-accent-hover);
  color: #ffffff;
}

.button-secondary {
  border-color: var(--color-border);
  background: var(--color-surface);
  color: var(--color-text);
}

.button-secondary:hover,
.button-download:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.button:disabled {
  opacity: 0.48;
  cursor: not-allowed;
  transform: none;
}

.results-actions .button {
  flex: 1;
}

.file-results-list {
  padding: 0;
  margin: 0;
  list-style: none;
}

.file-row {
  display: flex;
  padding: 17px 18px;
  align-items: stretch;
  justify-content: space-between;
  flex-direction: column;
  gap: 14px;
  border-bottom: 1px solid var(--color-border);
}

.file-row:last-child {
  border-bottom: 0;
}

.file-row--error {
  background: var(--color-error-soft);
}

.file-details {
  min-width: 0;
}

.original-name,
.generated-name,
.file-error {
  display: block;
  overflow-wrap: anywhere;
}

.original-name {
  margin-bottom: 5px;
  color: var(--color-muted);
  font-size: 0.82rem;
}

.generated-name {
  color: var(--color-text);
  font-size: 0.91rem;
  font-weight: 700;
}

.file-error {
  color: var(--color-error);
  font-size: 0.88rem;
  font-weight: 650;
}

.button-download {
  align-self: flex-start;
  border-color: var(--color-border);
  background: var(--color-surface);
  color: var(--color-text);
}

.section-space {
  padding: 72px 0;
}

.section-heading {
  max-width: 660px;
  margin-bottom: 34px;
}

.section-heading h2,
.example-intro h2 {
  margin-bottom: 14px;
}

.section-heading p,
.example-intro p {
  margin-bottom: 0;
  color: var(--color-muted);
  font-size: 1.03rem;
}

.how-section {
  border-top: 1px solid var(--color-border);
  background: var(--color-surface);
}

.rules-grid {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--color-border);
}

.rule-item {
  padding: 26px 0;
  border-bottom: 1px solid var(--color-border);
}

.rule-number {
  display: block;
  margin-bottom: 26px;
  color: var(--color-accent);
  font-family: var(--font-display);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.rule-item h3 {
  margin-bottom: 9px;
}

.rule-item p {
  margin-bottom: 0;
  color: var(--color-muted);
  font-size: 0.93rem;
}

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

.example-layout {
  display: grid;
  gap: 30px;
}

.example-intro {
  max-width: 540px;
}

.example-card {
  overflow: hidden;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  box-shadow: var(--shadow-card);
}

.example-row {
  padding: 24px;
}

.example-row span {
  display: block;
  margin-bottom: 10px;
  color: var(--color-muted);
  font-size: 0.76rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.example-row code {
  display: block;
  color: var(--color-text);
  font-size: clamp(0.86rem, 3.2vw, 1rem);
  overflow-wrap: anywhere;
}

.example-after {
  background: var(--color-accent-soft);
}

.example-after span,
.example-after code {
  color: var(--color-accent-hover);
}

.example-divider {
  height: 1px;
  background: var(--color-border);
}

.benefits-section {
  padding-top: 22px;
}

.benefits-grid {
  display: grid;
  gap: 1px;
  overflow: hidden;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-border);
}

.benefit-item {
  padding: 30px 25px;
  background: var(--color-surface);
}

.benefit-item h2 {
  margin-bottom: 9px;
  font-size: 1.25rem;
}

.benefit-item p {
  margin-bottom: 0;
  color: var(--color-muted);
  font-size: 0.94rem;
}

.legal-summaries {
  padding-top: 20px;
}

.summaries-grid {
  display: grid;
  gap: 18px;
}

.summary-card {
  padding: 28px 24px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-surface);
}

.summary-card h2 {
  margin-bottom: 12px;
  font-size: 1.35rem;
}

.summary-card p {
  color: var(--color-muted);
  font-size: 0.94rem;
}

.summary-card a {
  font-size: 0.9rem;
  font-weight: 750;
  text-decoration: none;
}

.ad-slot {
  width: min(calc(100% - 32px), var(--container));
  min-height: 0;
  margin-inline: auto;
}

.ad-slot--active {
  display: flex;
  padding: 18px 0;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.ad-slot__content {
  display: flex;
  width: 100%;
  max-width: 100%;
  min-width: 0;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  text-align: center;
}

.ad-slot__content iframe {
  display: block;
  max-width: 100%;
  margin-inline: auto;
  border: 0;
}

.ad-slot--responsive .ad-slot__content,
.ad-slot--responsive [id^="container-"] {
  width: 100%;
}

.ad-slot--300x250 .ad-slot__content {
  width: 300px;
  min-height: 250px;
}

.ad-slot--300x250 iframe {
  width: min(300px, 100%);
  height: 250px;
}

.ad-slot--320x50 .ad-slot__content {
  width: 320px;
  min-height: 50px;
}

.ad-slot--320x50 iframe {
  width: min(320px, 100%);
  height: 50px;
}

.legal-page {
  min-height: 70vh;
  padding: 62px 0 86px;
}

.legal-container {
  max-width: var(--container-narrow);
}

.page-heading {
  padding-bottom: 34px;
  margin-bottom: 34px;
  border-bottom: 1px solid var(--color-border);
}

.section-label {
  margin-bottom: 12px;
  color: var(--color-accent);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.page-heading h1 {
  margin-bottom: 16px;
  font-size: clamp(2.35rem, 8vw, 4rem);
}

.page-heading > p:last-child {
  max-width: 620px;
  margin-bottom: 0;
  color: var(--color-muted);
  font-size: 1.06rem;
}

.legal-content {
  display: grid;
  gap: 34px;
}

.legal-content section {
  padding-bottom: 30px;
  border-bottom: 1px solid var(--color-border);
}

.legal-content section:last-child {
  border-bottom: 0;
}

.legal-content h2 {
  margin-bottom: 12px;
  font-size: 1.35rem;
}

.legal-content p {
  color: #44536a;
}

.legal-content p:last-child {
  margin-bottom: 0;
}

.not-found-page {
  display: grid;
  min-height: 68vh;
  padding: 70px 0;
  place-items: center;
  text-align: center;
}

.not-found-content {
  max-width: 680px;
}

.error-code {
  margin-bottom: 14px;
  color: var(--color-accent);
  font-family: var(--font-display);
  font-size: 0.88rem;
  font-weight: 800;
  letter-spacing: 0.16em;
}

.not-found-content h1 {
  margin-bottom: 16px;
}

.not-found-content > p:not(.error-code) {
  margin-bottom: 28px;
  color: var(--color-muted);
}

.site-footer {
  border-top: 1px solid var(--color-border);
  background: var(--color-surface);
}

.footer-inner {
  display: flex;
  padding-block: 28px;
  align-items: flex-start;
  justify-content: space-between;
  flex-direction: column;
  gap: 16px;
}

.footer-inner p {
  max-width: 720px;
  margin-bottom: 0;
  color: var(--color-muted);
  font-size: 0.86rem;
}

.footer-navigation {
  display: flex;
  gap: 18px;
}

.footer-navigation a {
  color: var(--color-muted);
  font-size: 0.86rem;
  font-weight: 700;
  text-decoration: none;
}

.footer-navigation a:hover {
  color: var(--color-accent);
}

@media (min-width: 640px) {
  .container {
    width: min(calc(100% - 48px), var(--container));
  }

  .results-heading,
  .file-row,
  .footer-inner {
    align-items: center;
    flex-direction: row;
  }

  .results-actions {
    width: auto;
  }

  .results-actions .button {
    flex: initial;
  }

  .file-row {
    padding: 17px 22px;
  }

  .file-details {
    flex: 1;
  }

  .button-download {
    align-self: center;
  }

  .benefits-grid,
  .summaries-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 780px) {
  .menu-toggle {
    display: none;
  }

  .primary-navigation {
    position: static;
    display: flex;
    min-width: 0;
    padding: 0;
    align-items: center;
    gap: 5px;
    border: 0;
    border-radius: 0;
    background: transparent;
    box-shadow: none;
  }

  .primary-navigation a {
    display: inline-flex;
    padding-inline: 14px;
    align-items: center;
  }

  .hero-section {
    padding-top: 92px;
  }

  .section-space {
    padding-block: 96px;
  }

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

  .rule-item {
    padding: 30px 28px;
  }

  .rule-item:nth-child(odd) {
    padding-left: 0;
    border-right: 1px solid var(--color-border);
  }

  .example-layout {
    grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
    align-items: center;
    gap: 70px;
  }

  .legal-page {
    padding-block: 90px 110px;
  }
}

@media (min-width: 1024px) {
  .rules-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .rule-item,
  .rule-item:nth-child(odd) {
    padding: 34px 24px;
    border-right: 1px solid var(--color-border);
  }

  .rule-item:first-child {
    padding-left: 0;
  }

  .rule-item:last-child {
    padding-right: 0;
    border-right: 0;
  }
}

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

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