/* Slipstream Development — one stylesheet for the whole site.
   Colours come from the logo: deep blue → cyan chevron, slate wordmark. */

/* Self-hosted fonts (variable, SIL Open Font License), so visitors' browsers
   don't contact Google. Inter 400-600, Montserrat 500-800; latin + latin-ext. */
@font-face {
  font-family: "Inter";
  font-style: normal;
  font-weight: 400 600;
  font-display: swap;
  src: url("/assets/fonts/inter-latin-ext.woff2") format("woff2");
  unicode-range:
    U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
@font-face {
  font-family: "Inter";
  font-style: normal;
  font-weight: 400 600;
  font-display: swap;
  src: url("/assets/fonts/inter-latin.woff2") format("woff2");
  unicode-range:
    U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: "Montserrat";
  font-style: normal;
  font-weight: 500 800;
  font-display: swap;
  src: url("/assets/fonts/montserrat-latin-ext.woff2") format("woff2");
  unicode-range:
    U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
@font-face {
  font-family: "Montserrat";
  font-style: normal;
  font-weight: 500 800;
  font-display: swap;
  src: url("/assets/fonts/montserrat-latin.woff2") format("woff2");
  unicode-range:
    U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

:root {
  --blue: #1e5be0;
  --cyan: #1fd6f0;
  --gradient: linear-gradient(120deg, var(--blue), var(--cyan));
  /* Darker cyan end so white text on it (and it as text on white) meets WCAG AA. */
  --gradient-strong: linear-gradient(120deg, var(--blue), #0e7490);

  --bg: #ffffff;
  --bg-alt: #f4f7fb;
  --surface: #ffffff;
  --ink: #23282f;
  --ink-soft: #55606e;
  --line: #e1e7ef;
  --field-border: #7a8696;
  --link: #1a4fc4;
  --focus: #1e5be0;
  --success: #17804a;
  --error: #b42318;
  --shadow: 0 1px 2px rgb(16 24 40 / 6%), 0 8px 24px rgb(16 24 40 / 6%);

  --radius: 14px;
  --max: 1080px;
  --font-head: "Montserrat", system-ui, sans-serif;
  --font-body: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;

  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1318;
    --bg-alt: #151b22;
    --surface: #19202a;
    --ink: #e8edf3;
    --ink-soft: #9aa6b4;
    --line: #283241;
    --field-border: #687587;
    --link: #6fb6ff;
    --focus: #1fd6f0;
    --success: #4ccb87;
    --error: #ff8a80;
    --shadow: 0 1px 2px rgb(0 0 0 / 30%), 0 8px 24px rgb(0 0 0 / 25%);
  }
}

/* ---------- Base ---------- */

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 400 1rem / 1.65 var(--font-body);
  -webkit-font-smoothing: antialiased;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: var(--link);
  text-underline-offset: 3px;
}

h1,
h2,
h3 {
  font-family: var(--font-head);
  line-height: 1.2;
  margin: 0 0 0.5em;
  letter-spacing: -0.01em;
}

h1 {
  font-size: clamp(2rem, 5.5vw, 3.4rem);
  font-weight: 700;
}

h2 {
  font-size: clamp(1.5rem, 3.5vw, 2.1rem);
  font-weight: 700;
}

h3 {
  font-size: 1.2rem;
  font-weight: 600;
}

p {
  margin: 0 0 1em;
}

:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 2px;
  border-radius: 4px;
}

.container {
  width: 100%;
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 16px;
}

@media (min-width: 720px) {
  .container {
    padding: 0 32px;
  }
}

.skip-link {
  position: absolute;
  left: -9999px;
}

.skip-link:focus {
  left: 16px;
  top: 12px;
  z-index: 100;
  background: var(--surface);
  padding: 8px 12px;
}

.gradient-text {
  background: var(--gradient-strong);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

@media (prefers-color-scheme: dark) {
  .gradient-text {
    background-image: var(--gradient);
  }
}

.eyebrow {
  font: 600 0.8rem / 1 var(--font-head);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--blue);
  margin-bottom: 12px;
}

@media (prefers-color-scheme: dark) {
  .eyebrow {
    color: var(--cyan);
  }
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: saturate(160%) blur(10px);
  border-bottom: 1px solid var(--line);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 64px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--ink);
}

.brand img {
  width: 44px;
  flex-shrink: 0;
}

.brand-name {
  display: flex;
  flex-direction: column;
  font-family: var(--font-head);
  line-height: 1.05;
}

.brand-name strong {
  font-weight: 800;
  font-size: 1.05rem;
  letter-spacing: 0.02em;
}

.brand-name span {
  font-weight: 500;
  font-size: 0.66rem;
  letter-spacing: 0.2em;
  color: var(--ink-soft);
}

.site-nav ul {
  display: flex;
  gap: 4px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.site-nav a {
  display: block;
  padding: 8px 10px;
  border-radius: 8px;
  text-decoration: none;
  color: var(--ink-soft);
  font-weight: 500;
  font-size: 0.95rem;
}

.site-nav a:hover,
.site-nav a[aria-current="page"] {
  color: var(--ink);
  background: var(--bg-alt);
}

/* EN/NL switcher: the last nav item, set apart as a small pill. */
.site-nav .lang-switch {
  margin-left: 6px;
}

.site-nav .lang-switch a {
  padding: 7px 10px;
  border: 1px solid var(--line);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  line-height: 1.45rem;
}

.site-nav .lang-switch a:hover {
  border-color: var(--ink-soft);
}

@media (max-width: 420px) {
  .brand-name {
    display: none;
  }

  /* Four nav items (with the EN/NL switcher) have to fit beside the logo at 320px. */
  .site-header .container {
    gap: 8px;
  }

  .site-nav ul {
    gap: 2px;
  }

  .site-nav a {
    padding: 8px 6px;
    font-size: 0.9rem;
  }

  .site-nav .lang-switch {
    margin-left: 2px;
  }
}

@media (max-width: 360px) {
  .brand img {
    width: 36px;
  }
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 46px;
  padding: 0 22px;
  border-radius: 999px;
  border: 1px solid transparent;
  font: 600 0.98rem / 1 var(--font-body);
  text-decoration: none;
  cursor: pointer;
  transition:
    transform 0.15s ease,
    box-shadow 0.15s ease;
}

.btn-primary {
  background: var(--gradient-strong);
  color: #fff;
  box-shadow: 0 6px 18px rgb(30 91 224 / 28%);
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 10px 24px rgb(30 91 224 / 34%);
}

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

.btn-secondary:hover {
  background: var(--bg-alt);
}

.btn[disabled] {
  opacity: 0.6;
  cursor: progress;
  transform: none;
}

/* ---------- Sections ---------- */

.section {
  padding: 72px 0;
}

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

.section-head {
  max-width: 640px;
  margin-bottom: 40px;
}

/* :not(.eyebrow) so these don't override the eyebrow's size and colour. */
.section-head p:not(.eyebrow) {
  color: var(--ink-soft);
  font-size: 1.08rem;
}

/* Hero */

.hero {
  position: relative;
  overflow: hidden;
  padding: 88px 0 80px;
}

.hero::before {
  content: "";
  position: absolute;
  inset: -40% -20% auto auto;
  width: 640px;
  height: 640px;
  background: radial-gradient(circle, rgb(31 214 240 / 18%), transparent 65%);
  pointer-events: none;
}

.hero .container {
  position: relative;
}

.hero h1 {
  max-width: 18ch;
}

.hero-grid {
  display: grid;
  gap: 32px;
  align-items: center;
}

.hero-mark {
  display: none;
}

@media (min-width: 900px) {
  .hero-grid {
    grid-template-columns: 1fr auto;
  }

  .hero-mark {
    display: block;
    width: 260px;
    filter: drop-shadow(0 20px 40px rgb(30 91 224 / 25%));
  }
}

.hero .lead {
  max-width: 560px;
  font-size: clamp(1.05rem, 2.2vw, 1.2rem);
  color: var(--ink-soft);
  margin-bottom: 32px;
}

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

/* Cards */

.grid-2 {
  display: grid;
  gap: 20px;
}

@media (min-width: 760px) {
  .grid-2 {
    grid-template-columns: 1fr 1fr;
  }
}

.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: var(--shadow);
}

@media (max-width: 480px) {
  .card {
    padding: 20px;
  }
}

.card-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  background: var(--gradient);
  color: #fff;
  margin-bottom: 18px;
}

.card-icon svg {
  width: 22px;
  height: 22px;
}

.card p {
  color: var(--ink-soft);
}

.checklist {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 8px;
}

.checklist li {
  position: relative;
  padding-left: 26px;
}

.checklist li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 12px;
  height: 7px;
  border-left: 2px solid var(--blue);
  border-bottom: 2px solid var(--blue);
  transform: rotate(-45deg);
}

@media (prefers-color-scheme: dark) {
  .checklist li::before {
    border-color: var(--cyan);
  }
}

/* About */

.about {
  display: grid;
  gap: 32px;
  align-items: center;
}

@media (min-width: 760px) {
  .about {
    grid-template-columns: 1.4fr 1fr;
  }
}

.about p:not(.eyebrow) {
  color: var(--ink-soft);
  font-size: 1.05rem;
}

.stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.stat {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px;
}

.stat strong {
  display: block;
  font: 700 1.1rem / 1.3 var(--font-head);
}

.stat span {
  color: var(--ink-soft);
  font-size: 0.9rem;
}

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

.contact {
  display: grid;
  gap: 24px;
}

@media (min-width: 860px) {
  .contact {
    grid-template-columns: 1.5fr 1fr;
    align-items: start;
  }
}

.form {
  display: grid;
  gap: 16px;
}

.field {
  display: grid;
  gap: 6px;
}

.field label {
  font-weight: 600;
  font-size: 0.92rem;
}

.field input,
.field textarea {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--field-border);
  border-radius: 10px;
  background: var(--bg);
  color: var(--ink);
  font: inherit;
}

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

.field input:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--focus);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--focus) 25%, transparent);
}

.honeypot {
  position: absolute;
  left: -9999px;
}

.form-status {
  margin: 0;
  font-weight: 500;
}

.form-status:empty {
  display: none;
}

.form-status[data-state="success"] {
  color: var(--success);
}

.form-status[data-state="error"] {
  color: var(--error);
}

.details {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 18px;
}

.details dt {
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

.details dd {
  margin: 2px 0 0;
  font-size: 1.05rem;
}

/* ---------- Apps ---------- */

.page-intro {
  padding: 72px 0 24px;
}

.page-intro p:not(.eyebrow) {
  max-width: 600px;
  color: var(--ink-soft);
  font-size: 1.1rem;
}

.project {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 20px;
  box-shadow: var(--shadow);
  overflow: hidden;
}

.project-body {
  padding: 28px;
}

@media (min-width: 760px) {
  .project-body {
    padding: 40px;
  }
}

.project-head {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 20px;
}

.project-head img {
  width: 72px;
  height: 72px;
  border-radius: 18px;
  box-shadow: 0 2px 8px rgb(0 0 0 / 12%);
}

@media (prefers-color-scheme: dark) {
  .project-head img {
    box-shadow: 0 0 0 1px var(--line);
  }
}

.project-head h2 {
  margin: 0;
}

.project-head p {
  margin: 2px 0 0;
  color: var(--ink-soft);
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 16px;
  padding: 5px 12px;
  border-radius: 999px;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--blue);
  background: color-mix(in srgb, var(--blue) 10%, transparent);
}

.badge::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: currentColor;
}

@media (prefers-color-scheme: dark) {
  .badge {
    color: var(--cyan);
    background: color-mix(in srgb, var(--cyan) 12%, transparent);
  }
}

.project-summary {
  font-size: 1.1rem;
  max-width: 720px;
  margin-bottom: 28px;
}

.shots {
  display: flex;
  gap: 16px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  padding: 28px;
  background: var(--bg-alt);
  border-top: 1px solid var(--line);
}

@media (min-width: 760px) {
  .shots {
    padding: 32px 40px;
    justify-content: space-between;
  }
}

.shots figure {
  flex: 0 0 auto;
  width: min(200px, 56vw);
  margin: 0;
  scroll-snap-align: start;
}

.shots img {
  border-radius: 22px;
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.shots figcaption {
  margin-top: 10px;
  text-align: center;
  font-size: 0.88rem;
  color: var(--ink-soft);
}

.more-soon {
  text-align: center;
  color: var(--ink-soft);
  padding: 40px 0 8px;
}

/* ---------- Text pages (privacy) ---------- */

.prose > * {
  max-width: 720px;
}

.prose h2 {
  font-size: 1.3rem;
  margin-top: 1.8em;
}

.prose h2:first-child {
  margin-top: 0;
}

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

.site-footer {
  border-top: 1px solid var(--line);
  padding: 32px 0;
  font-size: 0.9rem;
  color: var(--ink-soft);
}

.site-footer .container {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px 24px;
}

.site-footer p {
  margin: 0;
}

.site-footer a {
  color: inherit;
}

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

  .btn {
    transition: none;
  }
}

.section-tight {
  padding-top: 24px;
}

main {
  min-height: calc(100vh - 170px);
}