/* ============================================================
   We Run Ads Sp. z o.o. — design system
   Editorial-corporate: white, deep navy ink, single cobalt accent,
   hairline rules, oversized section numerals.
   ============================================================ */

:root {
  /* Ink — deep navy near-black, the dominant text color */
  --ink-950: #0c1220;
  --ink-900: #121b2e;
  --ink-800: #1b2740;
  --ink-600: #3c4a63;
  --ink-500: #56627a;
  --ink-400: #7b8699;

  /* Cobalt — the single confident accent */
  --cobalt-700: #1733b8;
  --cobalt-600: #2244ec;
  --cobalt-500: #3a5bff;
  --cobalt-100: #e3e9ff;
  --cobalt-50: #f0f3ff;

  /* Surfaces & hairlines */
  --mist: #f6f8fb;
  --line: #e4e8f0;

  --font-display: 'Bricolage Grotesque', ui-sans-serif, system-ui, sans-serif;
  --font-sans: 'Instrument Sans', ui-sans-serif, system-ui, sans-serif;
}

/* ---------- Reset & base ---------- */

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  color: var(--ink-600);
  background: #fff;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

main {
  flex: 1;
}

img,
svg {
  display: block;
}

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

ul {
  list-style: none;
}

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

.icon {
  width: 1.25rem;
  height: 1.25rem;
  flex-shrink: 0;
}

.container {
  max-width: 72rem;
  margin-inline: auto;
  padding-inline: 1.25rem;
}

@media (min-width: 640px) {
  .container {
    padding-inline: 2rem;
  }
}

/* ---------- Buttons ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  border-radius: 9999px;
  font-size: 0.875rem;
  font-weight: 600;
  padding: 0.875rem 1.75rem;
  border: 0;
  cursor: pointer;
  transition: background-color 0.2s, border-color 0.2s;
}

.btn .icon {
  width: 1rem;
  height: 1rem;
}

.btn-primary {
  background: var(--ink-950);
  color: #fff;
}

.btn-primary:hover {
  background: var(--cobalt-600);
}

.btn-secondary {
  background: #fff;
  color: var(--ink-950);
  border: 1px solid var(--line);
}

.btn-secondary:hover {
  border-color: var(--ink-950);
}

/* ---------- Header ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.9);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 4rem;
}

.brand {
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
}

.brand-name {
  font-family: var(--font-display);
  font-size: 1.125rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--ink-950);
}

.brand-suffix {
  display: none;
  font-size: 11px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--ink-400);
}

@media (min-width: 640px) {
  .brand-suffix {
    display: inline;
  }
}

.main-nav {
  display: none;
  align-items: center;
  gap: 1.75rem;
}

.main-nav a {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--ink-600);
  transition: color 0.2s;
}

.main-nav a:hover {
  color: var(--ink-950);
}

.main-nav .nav-cta {
  background: var(--ink-950);
  color: #fff;
  font-weight: 600;
  border-radius: 9999px;
  padding: 0.5rem 1.25rem;
  transition: background-color 0.2s;
}

.main-nav .nav-cta:hover {
  background: var(--cobalt-600);
  color: #fff;
}

.menu-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  margin-right: -0.5rem;
  border: 0;
  border-radius: 0.375rem;
  background: transparent;
  color: var(--ink-950);
  cursor: pointer;
}

.menu-toggle .icon-close {
  display: none;
}

.menu-toggle[aria-expanded='true'] .icon-menu {
  display: none;
}

.menu-toggle[aria-expanded='true'] .icon-close {
  display: block;
}

.mobile-nav {
  display: none;
  border-top: 1px solid var(--line);
  background: #fff;
}

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

.mobile-nav .container {
  padding-block: 1rem;
}

.mobile-nav a {
  display: block;
  padding: 0.625rem 0.75rem;
  border-radius: 0.375rem;
  font-size: 1rem;
  font-weight: 500;
  color: var(--ink-600);
}

.mobile-nav a:hover {
  background: var(--mist);
  color: var(--ink-950);
}

.mobile-nav .nav-cta {
  margin-top: 0.5rem;
  background: var(--ink-950);
  color: #fff;
  font-weight: 600;
  text-align: center;
  border-radius: 9999px;
  padding: 0.625rem 1.25rem;
}

@media (min-width: 768px) {
  .main-nav {
    display: flex;
  }

  .menu-toggle,
  .mobile-nav {
    display: none !important;
  }
}

/* ---------- Hero ---------- */

.hero {
  position: relative;
  overflow: hidden;
  background: #fff;
}

/* Faint dot-grid texture, faded out toward the bottom */
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle, #c6cede 1px, transparent 1px);
  background-size: 26px 26px;
  -webkit-mask-image: radial-gradient(ellipse 70% 80% at 50% 0%, black 30%, transparent 75%);
  mask-image: radial-gradient(ellipse 70% 80% at 50% 0%, black 30%, transparent 75%);
}

/* Single soft cobalt wash */
.hero::after {
  content: '';
  position: absolute;
  top: -10rem;
  left: 50%;
  transform: translateX(-50%);
  width: 720px;
  height: 480px;
  border-radius: 9999px;
  background: radial-gradient(closest-side, rgba(34, 68, 236, 0.08), transparent);
  pointer-events: none;
}

.hero .container {
  position: relative;
  z-index: 1;
  padding-top: 5rem;
  padding-bottom: 6rem;
}

.eyebrow {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--cobalt-600);
}

.hero h1 {
  margin-top: 1.5rem;
  max-width: 48rem;
  font-family: var(--font-display);
  font-size: 2.25rem;
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.025em;
  color: var(--ink-950);
}

.hero-lead {
  margin-top: 1.5rem;
  max-width: 42rem;
  font-size: 1.125rem;
  line-height: 1.65;
  color: var(--ink-600);
}

.hero-actions {
  margin-top: 2.5rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1rem;
}

.fact-strip {
  margin-top: 5rem;
  max-width: 48rem;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: 0.75rem;
  overflow: hidden;
}

.fact-strip > div {
  background: #fff;
  padding: 1.25rem 1.5rem;
}

.fact-strip dt {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--ink-400);
}

.fact-strip dd {
  margin-top: 0.375rem;
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
  color: var(--ink-950);
}

@media (min-width: 640px) {
  .fact-strip {
    grid-template-columns: repeat(3, 1fr);
  }

  .hero h1 {
    font-size: 3rem;
  }
}

@media (min-width: 768px) {
  .hero .container {
    padding-top: 7rem;
    padding-bottom: 8rem;
  }

  .hero h1 {
    font-size: 3.75rem;
  }

  .hero-lead {
    font-size: 1.25rem;
  }
}

/* ---------- Sections (editorial wrapper) ---------- */

.section {
  background: #fff;
  scroll-margin-top: 5rem;
}

.section.tinted {
  background: var(--mist);
}

.section > .container {
  border-top: 1px solid var(--line);
  padding-block: 5rem;
}

.section-grid {
  display: grid;
  gap: 2.5rem;
}

.section-numeral {
  display: block;
  font-family: var(--font-display);
  font-size: 3.75rem;
  font-weight: 300;
  line-height: 1;
  color: rgba(12, 18, 32, 0.12);
}

.section-eyebrow {
  margin-top: 0.75rem;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--cobalt-600);
}

.section h2 {
  max-width: 42rem;
  font-family: var(--font-display);
  font-size: 1.875rem;
  font-weight: 600;
  letter-spacing: -0.025em;
  color: var(--ink-950);
}

.section-lead {
  margin-top: 1.25rem;
  max-width: 42rem;
  font-size: 1.125rem;
  line-height: 1.65;
}

.section-lead p + p {
  margin-top: 1rem;
}

.section-body {
  margin-top: 2.5rem;
}

@media (min-width: 768px) {
  .section > .container {
    padding-block: 7rem;
  }

  .section-grid {
    grid-template-columns: 200px 1fr;
  }

  .section-numeral {
    font-size: 4.5rem;
  }

  .section h2 {
    font-size: 2.25rem;
  }
}

/* ---------- Hairline card grids (services, business model) ---------- */

.card-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: 0.75rem;
  overflow: hidden;
}

.service-card {
  background: #fff;
  padding: 1.75rem;
  transition: background-color 0.2s;
}

.service-card:hover {
  background: var(--cobalt-50);
}

.icon-box {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 0.5rem;
  background: var(--cobalt-100);
  color: var(--cobalt-700);
  transition: background-color 0.2s, color 0.2s;
}

.service-card:hover .icon-box {
  background: var(--cobalt-600);
  color: #fff;
}

.service-card h3 {
  margin-top: 1.25rem;
  font-family: var(--font-display);
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--ink-950);
}

.service-card p {
  margin-top: 0.625rem;
  font-size: 0.875rem;
  line-height: 1.6;
}

@media (min-width: 640px) {
  .card-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .card-grid.cols-3 {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* Business model role cards */

.role-card {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  background: #fff;
  padding: 1.5rem;
}

.role-card .icon-box {
  width: 2.25rem;
  height: 2.25rem;
  margin-top: 0.125rem;
  background: var(--mist);
  color: var(--ink-800);
}

.role-card .icon-box .icon {
  width: 1.125rem;
  height: 1.125rem;
}

.role-label {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--ink-400);
}

.role-name {
  margin-top: 0.25rem;
  font-weight: 500;
  color: var(--ink-950);
}

/* ---------- Compliance list ---------- */

.compliance-grid {
  display: grid;
  grid-template-columns: 1fr;
  column-gap: 2.5rem;
  row-gap: 2rem;
}

.compliance-item {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
}

.compliance-item .icon-box {
  width: 2.25rem;
  height: 2.25rem;
  margin-top: 0.125rem;
}

.compliance-item .icon-box .icon {
  width: 1.125rem;
  height: 1.125rem;
}

.compliance-item h3 {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
  color: var(--ink-950);
}

.compliance-item p {
  margin-top: 0.375rem;
  font-size: 0.875rem;
  line-height: 1.6;
}

@media (min-width: 640px) {
  .compliance-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* ---------- Contact ---------- */

.contact-grid {
  display: grid;
  gap: 2.5rem;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  font-size: 0.875rem;
}

.contact-info li {
  display: flex;
  align-items: flex-start;
  gap: 0.875rem;
}

.contact-info .icon {
  margin-top: 0.125rem;
  color: var(--cobalt-600);
}

.contact-label {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--ink-400);
}

.contact-value {
  margin-top: 0.25rem;
  font-weight: 500;
  color: var(--ink-950);
}

a.contact-value:hover {
  color: var(--cobalt-600);
}

@media (min-width: 1024px) {
  .contact-grid {
    grid-template-columns: 320px 1fr;
  }
}

/* Form */

.contact-form {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 0.75rem;
  padding: 1.75rem;
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

.form-field label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--ink-950);
}

.form-field input,
.form-field textarea {
  margin-top: 0.5rem;
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 0.5rem;
  background: #fff;
  padding: 0.625rem 1rem;
  color: var(--ink-950);
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.form-field input::placeholder,
.form-field textarea::placeholder {
  color: var(--ink-400);
}

.form-field input:focus,
.form-field textarea:focus {
  border-color: var(--cobalt-600);
  box-shadow: 0 0 0 2px var(--cobalt-100);
}

.form-field textarea {
  resize: vertical;
}

.form-footer {
  margin-top: 1.75rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1rem;
}

.form-footer .btn {
  padding-block: 0.75rem;
}

.form-footer .btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.form-status {
  font-size: 0.875rem;
  font-weight: 500;
}

.form-status.success {
  color: var(--cobalt-700);
}

.form-status.error {
  color: #dc2626;
}

@media (min-width: 640px) {
  .contact-form {
    padding: 2.25rem;
  }

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

  .form-field.span-2 {
    grid-column: span 2;
  }
}

/* ---------- Footer ---------- */

.site-footer {
  background: var(--ink-950);
  color: #fff;
}

.site-footer .container {
  padding-block: 3.5rem;
}

.footer-grid {
  display: grid;
  gap: 2.5rem;
}

.footer-brand p {
  margin-top: 0.75rem;
  max-width: 20rem;
  font-size: 0.875rem;
  line-height: 1.6;
  color: rgba(255, 255, 255, 0.6);
}

.footer-brand .brand-name {
  color: #fff;
}

.footer-heading {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: rgba(255, 255, 255, 0.4);
}

.footer-list {
  margin-top: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.625rem;
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.7);
}

.footer-list a {
  color: rgba(255, 255, 255, 0.7);
  transition: color 0.2s;
}

.footer-list a:hover {
  color: #fff;
}

.footer-bottom {
  margin-top: 3rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 1.5rem;
  font-size: 0.75rem;
  color: rgba(255, 255, 255, 0.4);
}

@media (min-width: 768px) {
  .footer-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* ---------- Legal pages ---------- */

.legal {
  max-width: 48rem;
  margin-inline: auto;
  padding: 4rem 1.25rem;
}

.legal h1 {
  margin-top: 1rem;
  font-family: var(--font-display);
  font-size: 1.875rem;
  font-weight: 600;
  letter-spacing: -0.025em;
  color: var(--ink-950);
}

.legal-updated {
  margin-top: 0.75rem;
  font-size: 0.875rem;
  color: var(--ink-400);
}

.legal-body {
  margin-top: 2.5rem;
  line-height: 1.65;
}

.legal-body section + section {
  margin-top: 2rem;
}

.legal-body h2 {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--ink-950);
}

.legal-body p {
  margin-top: 0.75rem;
}

.legal-body ul {
  margin-top: 0.75rem;
  padding-left: 1.5rem;
  list-style: disc;
  display: flex;
  flex-direction: column;
  gap: 0.375rem;
}

.legal-body a {
  color: var(--cobalt-700);
  text-decoration: underline;
}

@media (min-width: 640px) {
  .legal {
    padding-inline: 2rem;
  }
}

@media (min-width: 768px) {
  .legal {
    padding-block: 6rem;
  }

  .legal h1 {
    font-size: 2.25rem;
  }
}

/* ---------- Load animation ---------- */

@keyframes rise-in {
  from {
    opacity: 0;
    transform: translateY(18px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.rise {
  animation: rise-in 0.7s cubic-bezier(0.22, 1, 0.36, 1) both;
}

.rise.d1 { animation-delay: 0.08s; }
.rise.d2 { animation-delay: 0.16s; }
.rise.d3 { animation-delay: 0.24s; }
.rise.d4 { animation-delay: 0.32s; }

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

  .rise {
    animation: none;
  }
}