/* RadiantX Technologies: site styles */

:root {
  --ink: #1b1b1c;
  --ink-2: #252526;
  --ink-line: #3b3b3d;
  --on-ink: #f4f1ea;
  --on-ink-soft: #b9b8b2;
  --paper: #fbfaf6;
  --paper-2: #f2efe7;
  --line: #e0dbcf;
  --text: #24262b;
  --text-soft: #5b5d63;
  --amber: #fec913;
  --amber-text: #7f5d00;
  --serif: "Source Serif 4", Georgia, "Times New Roman", serif;
  --sans: "Hanken Grotesk", -apple-system, "Segoe UI", Roboto, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, Menlo, monospace;
  --wrap: 1180px;
  --gutter: clamp(20px, 5vw, 48px);
  --section: clamp(64px, 9vw, 112px);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 96px;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--text);
  font: 400 17px/1.65 var(--sans);
  -webkit-font-smoothing: antialiased;
}

h1,
h2,
h3 {
  margin: 0;
  font-family: var(--serif);
  font-weight: 500;
  line-height: 1.14;
  letter-spacing: -0.015em;
  text-wrap: balance;
}

h1 {
  font-size: clamp(2.5rem, 5.6vw, 4.25rem);
}

h2 {
  font-size: clamp(1.9rem, 3.6vw, 2.75rem);
}

h3 {
  font-size: 1.4rem;
  line-height: 1.25;
}

p {
  margin: 0 0 1em;
}

p:last-child {
  margin-bottom: 0;
}

ul,
ol {
  margin: 0;
  padding: 0;
  list-style: none;
}

a {
  color: inherit;
}

:focus-visible {
  outline: 2px solid var(--amber-text);
  outline-offset: 3px;
}

.on-ink :focus-visible {
  outline-color: var(--amber);
}

.wrap {
  width: 100%;
  max-width: calc(var(--wrap) + var(--gutter) * 2);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

.skip {
  position: absolute;
  left: 12px;
  top: -60px;
  z-index: 20;
  padding: 10px 16px;
  background: var(--amber);
  color: var(--ink);
}

.skip:focus {
  top: 12px;
}

.label {
  display: block;
  margin-bottom: 18px;
  color: var(--amber-text);
  font: 500 0.78rem/1.4 var(--mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.on-ink .label {
  color: var(--amber);
}

.lede {
  max-width: 62ch;
  color: var(--text-soft);
  font-size: 1.16rem;
}

.on-ink .lede {
  color: var(--on-ink-soft);
}

/* Buttons and links */

.btn {
  display: inline-block;
  padding: 13px 22px;
  border: 1px solid var(--ink);
  border-radius: 3px;
  background: var(--ink);
  color: var(--on-ink);
  font: 600 0.98rem/1.3 var(--sans);
  text-decoration: none;
  cursor: pointer;
  transition: background-color 0.15s, color 0.15s, border-color 0.15s;
}

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

.on-ink .btn {
  background: var(--amber);
  border-color: var(--amber);
  color: var(--ink);
}

.on-ink .btn:hover {
  background: var(--on-ink);
  border-color: var(--on-ink);
}

.on-ink .btn.ghost {
  background: transparent;
  border-color: var(--ink-line);
  color: var(--on-ink);
}

.on-ink .btn.ghost:hover {
  border-color: var(--amber);
  color: var(--amber);
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 32px;
}

.more {
  font-weight: 600;
  text-decoration: underline;
  text-decoration-color: var(--amber);
  text-decoration-thickness: 2px;
  text-underline-offset: 5px;
}

.more:hover {
  color: var(--amber-text);
}

.on-ink .more:hover {
  color: var(--amber);
}

/* Header */

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: var(--ink);
  border-bottom: 1px solid var(--ink-line);
  color: var(--on-ink);
}

.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 84px;
}

.brand {
  display: block;
  line-height: 0;
}

.brand img {
  display: block;
  height: auto;
}

.site-nav ul {
  display: flex;
  align-items: center;
  gap: 32px;
}

.site-nav a:not(.btn) {
  padding: 6px 0;
  font-weight: 500;
  text-decoration: none;
  border-bottom: 2px solid transparent;
}

.site-nav a:not(.btn):hover,
.site-nav a[aria-current="page"] {
  border-bottom-color: var(--amber);
}

.site-nav .btn {
  padding: 10px 18px;
}

.nav-toggle {
  display: none;
  padding: 8px 12px;
  border: 1px solid var(--ink-line);
  border-radius: 3px;
  background: none;
  color: var(--on-ink);
  font: 600 0.92rem/1.3 var(--sans);
  cursor: pointer;
}

/* Hero */

.hero {
  background: var(--ink);
  color: var(--on-ink);
  padding: clamp(56px, 8vw, 96px) 0 clamp(48px, 6vw, 72px);
}

.hero h1 {
  max-width: 17em;
}

.hero .lede {
  margin-top: 26px;
}

.page-hero {
  background: var(--ink);
  color: var(--on-ink);
  padding: clamp(52px, 7vw, 88px) 0;
}

.page-hero h1 {
  max-width: 18em;
  font-size: clamp(2.2rem, 4.6vw, 3.5rem);
}

.page-hero .lede {
  margin-top: 22px;
}

/* Engagement map: five stages with payroll running underneath */

.map {
  margin-top: clamp(48px, 7vw, 76px);
}

.map-title {
  margin-bottom: 26px;
  color: var(--on-ink-soft);
  font: 400 0.8rem/1.4 var(--mono);
  letter-spacing: 0.04em;
}

.map-stages {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  border-top: 2px solid var(--amber);
}

.map-stages li {
  position: relative;
  padding: 22px 20px 26px 0;
}

.map-stages li::before {
  content: "";
  position: absolute;
  top: -7px;
  left: 0;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--amber);
  box-shadow: 0 0 0 4px var(--ink);
}

.map-stages span {
  color: var(--amber);
  font: 500 0.78rem/1 var(--mono);
}

.map-stages h3 {
  margin: 10px 0 6px;
  font-size: 1.22rem;
}

.map-stages p {
  color: var(--on-ink-soft);
  font-size: 0.93rem;
  line-height: 1.5;
}

.map-payroll {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 18px;
  align-items: baseline;
  padding: 14px 18px;
  border-radius: 3px;
  background: var(--amber);
  color: var(--ink);
}

.map-payroll strong {
  font: 600 1.08rem/1.3 var(--serif);
}

.map-payroll span {
  font-size: 0.93rem;
}

/* Sections */

section.block {
  padding: var(--section) 0;
}

.tint {
  background: var(--paper-2);
}

.dark {
  background: var(--ink);
  color: var(--on-ink);
}

.intro {
  display: grid;
  grid-template-columns: 5fr 6fr;
  gap: clamp(28px, 6vw, 84px);
  align-items: start;
}

.block-head {
  max-width: 44rem;
  margin-bottom: clamp(36px, 5vw, 56px);
}

.block-head .lede {
  margin-top: 18px;
}

.rule-list li {
  padding: 18px 0;
  border-top: 1px solid var(--line);
}

.rule-list li:last-child {
  border-bottom: 1px solid var(--line);
}

.rule-list strong {
  display: block;
  margin-bottom: 2px;
  font-weight: 600;
}

.rule-list span {
  color: var(--text-soft);
}

/* Service index on the home page */

.service-row {
  display: grid;
  grid-template-columns: 56px 5fr 7fr;
  gap: 8px 24px;
  align-items: baseline;
  padding: 26px 0;
  border-top: 1px solid var(--line);
  text-decoration: none;
}

.service-row:last-child {
  border-bottom: 1px solid var(--line);
}

.service-row .num {
  color: var(--amber-text);
  font: 500 0.82rem/1 var(--mono);
}

.service-row h3 {
  transition: color 0.15s;
}

.service-row p {
  color: var(--text-soft);
}

.service-row:hover h3 {
  color: var(--amber-text);
}

/* Layered architecture diagram */

.diagram {
  border: 1px solid var(--ink-line);
  border-radius: 4px;
  background-color: var(--ink-2);
  background-image: linear-gradient(var(--ink-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--ink-line) 1px, transparent 1px);
  background-size: 28px 28px;
  background-position: -1px -1px;
  padding: clamp(16px, 3vw, 32px);
}

.diagram-head {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 4px 20px;
  margin-bottom: 20px;
  font: 400 0.78rem/1.5 var(--mono);
  color: var(--on-ink-soft);
}

.tier {
  display: grid;
  grid-template-columns: 112px 1fr;
  gap: 16px;
  align-items: center;
  position: relative;
  padding: 14px 16px;
  border: 1px solid var(--ink-line);
  background: var(--ink);
}

.tier + .tier {
  margin-top: 26px;
}

.tier + .tier::before {
  content: "";
  position: absolute;
  top: -27px;
  left: 50%;
  width: 2px;
  height: 21px;
  background: var(--amber);
}

.tier + .tier::after {
  content: "";
  position: absolute;
  top: -8px;
  left: calc(50% - 4px);
  border: 5px solid transparent;
  border-top: 7px solid var(--amber);
  border-bottom: 0;
}

.tier-name {
  color: var(--amber);
  font: 500 0.76rem/1.3 var(--mono);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.tier ul {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tier li {
  flex: 1 1 130px;
  padding: 8px 10px;
  border: 1px solid var(--ink-line);
  border-radius: 2px;
  color: var(--on-ink);
  font: 400 0.82rem/1.3 var(--mono);
  text-align: center;
}

.diagram-note {
  margin-top: 16px;
  color: var(--on-ink-soft);
  font-size: 0.9rem;
}

.split {
  display: grid;
  grid-template-columns: 4fr 7fr;
  gap: clamp(32px, 5vw, 64px);
  align-items: center;
}

/* Service detail */

.service {
  display: grid;
  grid-template-columns: 4fr 7fr;
  gap: 24px clamp(32px, 6vw, 80px);
  padding: clamp(48px, 6vw, 72px) 0;
  border-top: 1px solid var(--line);
  scroll-margin-top: 72px;
}

.service:first-child {
  border-top: 0;
  padding-top: 0;
}

.service:last-child {
  padding-bottom: 0;
}

.service h2 {
  font-size: clamp(1.6rem, 2.8vw, 2.1rem);
}

.service .num {
  display: block;
  margin-bottom: 12px;
  color: var(--amber-text);
  font: 500 0.82rem/1 var(--mono);
}

.service h3 {
  margin: 28px 0 10px;
  font: 500 0.78rem/1.4 var(--mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-soft);
}

.ticks li {
  position: relative;
  padding: 4px 0 4px 22px;
}

.ticks li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.95em;
  width: 10px;
  height: 2px;
  background: var(--amber-text);
}

.steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0 20px;
  counter-reset: step;
}

.steps li {
  counter-increment: step;
  padding-top: 14px;
  border-top: 2px solid var(--ink);
  font-size: 0.96rem;
  line-height: 1.5;
}

.steps li::before {
  content: "0" counter(step);
  display: block;
  margin-bottom: 6px;
  color: var(--amber-text);
  font: 500 0.78rem/1 var(--mono);
}

.steps strong {
  display: block;
  font-weight: 600;
}

.steps span {
  color: var(--text-soft);
}

.steps.cycle {
  grid-template-columns: repeat(3, 1fr);
  gap: 32px 20px;
}

/* Statutory table */

.table-scroll {
  overflow-x: auto;
}

table {
  width: 100%;
  min-width: 640px;
  border-collapse: collapse;
  font-size: 0.98rem;
  line-height: 1.5;
}

th,
td {
  padding: 16px 20px 16px 0;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

thead th {
  border-bottom: 2px solid var(--ink);
  font: 500 0.76rem/1.4 var(--mono);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

tbody th {
  font-weight: 600;
  width: 24%;
}

tbody td:nth-child(2) {
  width: 30%;
  color: var(--text-soft);
}

.callout {
  padding: 24px 28px;
  border-left: 3px solid var(--amber);
  background: var(--paper);
}

.fineprint {
  margin-top: 28px;
  max-width: 72ch;
  color: var(--text-soft);
  font-size: 0.92rem;
}

/* Closing call to action */

.closing {
  background: var(--amber);
  color: var(--ink);
  padding: clamp(56px, 8vw, 88px) 0;
}

.closing .wrap {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 28px 48px;
}

.closing h2 {
  max-width: 19em;
}

.closing p {
  max-width: 54ch;
  margin-top: 12px;
}

.closing .btn:hover {
  background: var(--paper);
  border-color: var(--paper);
}

/* Contact */

.contact-grid {
  display: grid;
  grid-template-columns: 7fr 5fr;
  gap: clamp(36px, 6vw, 80px);
  align-items: start;
}

.field {
  margin-bottom: 20px;
}

.field-pair {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0 20px;
}

label {
  display: block;
  margin-bottom: 6px;
  font-weight: 600;
  font-size: 0.95rem;
}

input,
select,
textarea {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid #8f8c84;
  border-radius: 3px;
  background: #fff;
  color: var(--text);
  font: inherit;
}

textarea {
  min-height: 150px;
  resize: vertical;
}

.form-note {
  margin-top: 14px;
  color: var(--text-soft);
  font-size: 0.92rem;
}

.details dt {
  margin-top: 20px;
  color: var(--text-soft);
  font: 500 0.76rem/1.4 var(--mono);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.details dt:first-child {
  margin-top: 0;
}

.details dd {
  margin: 4px 0 0;
}

/* Legal pages */

.legal {
  max-width: 74ch;
}

.legal ul {
  margin: 0 0 1em;
}

.legal li {
  position: relative;
  padding: 0 0 12px 20px;
}

.legal li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.8em;
  width: 8px;
  height: 2px;
  background: var(--amber-text);
}

.legal .updated {
  color: var(--text-soft);
  font: 400 0.84rem/1.5 var(--mono);
}

/* Footer */

.site-footer {
  background: var(--ink);
  color: var(--on-ink-soft);
  padding: 64px 0 28px;
  font-size: 0.96rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 5fr 2fr 2fr 3fr;
  gap: 36px;
}

.site-footer h2 {
  margin-bottom: 14px;
  color: var(--on-ink);
  font: 500 0.76rem/1.4 var(--mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.site-footer li {
  padding: 3px 0;
}

.site-footer a {
  text-decoration: none;
}

.site-footer a:hover {
  color: var(--amber);
}

.footer-about {
  max-width: 34ch;
  margin-top: 16px;
}

.footer-base {
  margin-top: 44px;
  padding-top: 20px;
  border-top: 1px solid var(--ink-line);
  font-size: 0.86rem;
}

/* Client highlight */

.client {
  padding: clamp(48px, 6vw, 72px) 0;
  background: var(--paper-2);
  border-bottom: 1px solid var(--line);
}

.client-grid {
  display: grid;
  grid-template-columns: 5fr 6fr;
  gap: 20px clamp(28px, 6vw, 84px);
  align-items: start;
}

.client h2 {
  font-size: clamp(1.6rem, 2.8vw, 2.1rem);
}

.client-name {
  margin-bottom: 8px;
  font: 600 1.3rem/1.3 var(--serif);
}

.client-name span {
  color: var(--amber-text);
  font: 500 0.86rem/1 var(--mono);
  white-space: nowrap;
}

/* Responsive */

@media (max-width: 960px) {
  .nav-toggle {
    display: block;
  }

  .site-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--ink);
    border-bottom: 1px solid var(--ink-line);
    padding: 12px var(--gutter) 22px;
  }

  .site-nav.open {
    display: block;
  }

  .site-nav ul {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
  }

  .intro,
  .client-grid,
  .split,
  .service,
  .contact-grid {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }

  .footer-brand {
    grid-column: 1 / -1;
  }

  .steps,
  .steps.cycle {
    grid-template-columns: 1fr 1fr;
    gap: 28px 20px;
  }
}

@media (max-width: 860px) {
  .map-stages {
    grid-template-columns: 1fr;
    border-top: 0;
    border-left: 2px solid var(--amber);
    margin-left: 6px;
  }

  .map-stages li {
    padding: 0 0 26px 24px;
  }

  .map-stages li::before {
    top: 2px;
    left: -7px;
  }

  .map-payroll {
    margin-left: 6px;
  }

  .tier {
    grid-template-columns: 1fr;
    gap: 10px;
  }
}

@media (max-width: 620px) {
  body {
    font-size: 16px;
  }

  .service-row {
    grid-template-columns: 1fr;
  }

  .field-pair {
    grid-template-columns: 1fr;
  }

  .steps,
  .steps.cycle {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr;
  }

  .tier li {
    flex-basis: 40%;
  }
}

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

  * {
    transition: none !important;
  }
}

@media print {
  .site-header,
  .closing,
  .site-footer {
    display: none;
  }
}