/* ==========================================================================
   Projekt16 — design system (dark / technical)
   Palette built around the logo azure #019DD8.
   ========================================================================== */

:root {
  --bg:          #0B0E12;
  --bg-2:        #0F131A;
  --surface:     #141922;
  --surface-2:   #1A212C;
  --text:        #EAEDF1;
  --text-muted:  #939BA7;
  --text-dim:    #656D7A;
  --rule:        #1F2733;
  --rule-2:      #2C3644;
  --signal:      #019DD8;
  --signal-lift: #3FBCEE;
  --signal-deep: #016E97;

  --font: "Archivo", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, monospace;

  --gutter: clamp(1.25rem, 4vw, 3.5rem);
  --section-y: clamp(4.5rem, 9vw, 8rem);
  --radius: 4px;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body { margin: 0; }
img, svg { display: block; max-width: 100%; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; padding: 0; }
a { color: inherit; }
input, select, textarea, button { font-family: inherit; }

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  font-size: 17px;
  line-height: 1.55;
  letter-spacing: -0.003em;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
@media (min-width: 900px) { body { font-size: 17.5px; } }

.wrap {
  max-width: 1260px;
  margin: 0 auto;
  padding-left: var(--gutter);
  padding-right: var(--gutter);
}

/* ---------- Nav ---------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(11, 14, 18, 0.86);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--rule);
}
.nav-inner {
  max-width: 1260px;
  margin: 0 auto;
  padding: 0.8rem var(--gutter);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}
.brand { display: inline-flex; align-items: center; text-decoration: none; }
.brand img { height: 30px; width: auto; mix-blend-mode: screen; }
@media (min-width: 720px) { .brand img { height: 34px; } }

.nav-right { display: flex; align-items: center; gap: clamp(0.85rem, 2.4vw, 1.7rem); font-size: 0.92rem; }
.nav-links { display: none; gap: clamp(0.85rem, 2.4vw, 1.6rem); }
@media (min-width: 880px) { .nav-links { display: inline-flex; } }
.nav-links a { text-decoration: none; color: var(--text-muted); transition: color 130ms ease; }
.nav-links a:hover, .nav-links a.is-current { color: var(--text); }

.nav-login { color: var(--text-muted); text-decoration: none; white-space: nowrap; transition: color 130ms ease; }
.nav-login:hover { color: var(--signal-lift); }

.lang-switch { display: inline-flex; align-items: center; gap: 0.15rem; }
.lang-switch button {
  padding: 0.2rem 0.5rem;
  font-family: var(--mono);
  font-size: 0.76rem;
  color: var(--text-dim);
  border: 1px solid transparent;
  border-radius: 3px;
  transition: color 130ms ease, border-color 130ms ease, background-color 130ms ease;
}
.lang-switch button:hover { color: var(--text); }
.lang-switch button[aria-pressed="true"] {
  color: var(--signal-lift);
  border-color: var(--signal-deep);
  background: rgba(1, 157, 216, 0.09);
}
.lang-switch .sep { color: var(--rule-2); font-size: 0.76rem; user-select: none; }

/* ---------- Sections ---------- */
section { padding-top: var(--section-y); padding-bottom: var(--section-y); }

.section-head {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.9rem;
  padding-bottom: 3rem;
}
@media (min-width: 940px) {
  .section-head { grid-template-columns: 14rem minmax(0, 1fr); gap: 3.5rem; }
}
.section-index {
  font-family: var(--mono);
  font-size: 0.76rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--signal-lift);
  padding-top: 0.5rem;
  display: flex;
  align-items: baseline;
  gap: 0.6rem;
}
.section-index::before {
  content: "";
  width: 1.6rem; height: 1px;
  background: var(--signal-deep);
  flex: none;
  transform: translateY(-0.28em);
}
.section-title {
  font-size: clamp(1.7rem, 3.1vw, 2.5rem);
  line-height: 1.13;
  letter-spacing: -0.026em;
  font-weight: 600;
  margin: 0;
  max-width: 24ch;
}
.section-note { color: var(--text-muted); margin: 1rem 0 0; max-width: 60ch; font-size: 0.98rem; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center;
  padding: 0.85rem 1.5rem;
  background: var(--signal);
  color: #04222E;
  text-decoration: none;
  font-weight: 600;
  font-size: 0.95rem;
  border-radius: var(--radius);
  transition: background-color 150ms ease, transform 150ms ease;
}
.btn:hover { background: var(--signal-lift); transform: translateY(-1px); }

.btn-ghost {
  display: inline-flex; align-items: center;
  padding: 0.85rem 1.5rem;
  color: var(--text);
  text-decoration: none;
  border: 1px solid var(--rule-2);
  border-radius: var(--radius);
  font-weight: 500;
  font-size: 0.95rem;
  transition: border-color 150ms ease, color 150ms ease, background-color 150ms ease;
}
.btn-ghost:hover { border-color: var(--signal-deep); color: var(--signal-lift); background: rgba(1,157,216,0.06); }

/* ---------- Card ---------- */
.card {
  background: linear-gradient(180deg, var(--surface) 0%, var(--bg-2) 100%);
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  transition: border-color 200ms ease, transform 200ms ease;
}
.card:hover { border-color: var(--rule-2); }

/* ---------- Chips ---------- */
.chips { display: flex; flex-wrap: wrap; gap: 0.35rem; }
.chip {
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.02em;
  color: var(--text-dim);
  border: 1px solid var(--rule);
  border-radius: 3px;
  padding: 0.2rem 0.45rem;
  background: rgba(255,255,255,0.015);
  white-space: nowrap;
}

/* ---------- Footer ---------- */
.site-footer {
  border-top: 1px solid var(--rule);
  padding: 2.75rem 0 3.25rem;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.75rem;
  color: var(--text-dim);
  font-size: 0.88rem;
  line-height: 1.75;
}
@media (min-width: 760px) {
  .site-footer { grid-template-columns: minmax(0,1fr) auto; align-items: end; }
}
.site-footer img { height: 26px; width: auto; mix-blend-mode: screen; margin-bottom: 0.7rem; }
.site-footer a { color: var(--text-muted); text-decoration: none; }
.site-footer a:hover { color: var(--signal-lift); }
.footer-right { text-align: left; }
@media (min-width: 760px) { .footer-right { text-align: right; } }

/* ---------- Reveal ---------- */
.reveal { opacity: 0; transform: translateY(14px); }
.reveal.is-in {
  opacity: 1; transform: none;
  transition: opacity 600ms cubic-bezier(.2,.7,.3,1), transform 600ms cubic-bezier(.2,.7,.3,1);
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition: none !important; animation: none !important; }
  .reveal { opacity: 1; transform: none; }
}

:focus-visible { outline: 2px solid var(--signal-lift); outline-offset: 3px; }
::selection { background: var(--signal); color: #04222E; }

/* ==========================================================================
   Mobile navigation
   ========================================================================== */
.nav-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px; height: 40px;
  border: 1px solid var(--rule-2);
  border-radius: var(--radius);
  color: var(--text);
  transition: border-color 140ms ease, color 140ms ease;
}
.nav-toggle:hover { border-color: var(--signal-deep); color: var(--signal-lift); }
@media (min-width: 880px) { .nav-toggle { display: none; } }

.nav-toggle svg { width: 18px; height: 18px; }
.nav-toggle .ico-close { display: none; }
.nav-toggle[aria-expanded="true"] .ico-open { display: none; }
.nav-toggle[aria-expanded="true"] .ico-close { display: block; }

.nav-panel {
  display: none;
  border-top: 1px solid var(--rule);
  background: var(--bg);
}
.nav-panel.is-open { display: block; }
@media (min-width: 880px) { .nav-panel, .nav-panel.is-open { display: none; } }

.nav-panel-inner {
  max-width: 1260px;
  margin: 0 auto;
  padding: 0.5rem var(--gutter) 1.25rem;
}
.nav-panel a {
  display: block;
  padding: 0.85rem 0;
  border-bottom: 1px solid var(--rule);
  text-decoration: none;
  color: var(--text);
  font-size: 1.02rem;
}
.nav-panel a:last-of-type { border-bottom: 0; }
.nav-panel a.is-current { color: var(--signal-lift); }
.nav-panel .panel-login {
  margin-top: 1rem;
  display: inline-flex;
  border: 1px solid var(--rule-2);
  border-radius: var(--radius);
  padding: 0.7rem 1.2rem;
  font-size: 0.95rem;
}

/* On small screens the desktop login link is redundant with the panel one */
@media (max-width: 879px) { .nav-login { display: none; } }

/* ==========================================================================
   Studio / founder
   ========================================================================== */
.studio-grid { display: grid; grid-template-columns: 1fr; gap: 2.5rem; }
@media (min-width: 940px) {
  .studio-grid { grid-template-columns: minmax(0,1fr) minmax(0,0.85fr); gap: 4rem; }
}
.founder { display: flex; gap: 1.25rem; align-items: flex-start; margin-bottom: 1.75rem; }
.founder-avatar {
  width: 64px; height: 64px; flex: none;
  border-radius: 50%;
  border: 1px solid var(--rule-2);
  background: var(--surface-2);
  display: grid; place-items: center;
  font-family: var(--mono);
  font-size: 1.1rem;
  color: var(--signal-lift);
  overflow: hidden;
}
.founder-avatar img { width: 100%; height: 100%; object-fit: cover; }
.founder-name { font-size: 1.15rem; font-weight: 600; margin: 0 0 0.2rem; letter-spacing: -0.014em; }
.founder-role {
  font-family: var(--mono); font-size: 0.75rem; color: var(--text-dim);
  letter-spacing: 0.05em;
}
.studio-bio p { color: var(--text-muted); margin: 0 0 1.15rem; max-width: 54ch; }
.studio-bio p:last-child { margin-bottom: 0; }

/* ==========================================================================
   Currency switch
   ========================================================================== */
.cur-switch {
  display: inline-flex; align-items: center; gap: 0.2rem;
  border: 1px solid var(--rule-2); border-radius: var(--radius);
  padding: 0.2rem;
  margin-bottom: 2rem;
}
.cur-switch button {
  font-family: var(--mono); font-size: 0.76rem;
  padding: 0.3rem 0.7rem; border-radius: 3px;
  color: var(--text-dim);
  transition: color 130ms ease, background-color 130ms ease;
}
.cur-switch button:hover { color: var(--text); }
.cur-switch button[aria-pressed="true"] { background: var(--signal); color: #04222E; font-weight: 500; }

/* ==========================================================================
   Skip link
   ========================================================================== */
.skip-link {
  position: absolute; left: -9999px;
  background: var(--signal); color: #04222E;
  padding: 0.7rem 1.1rem; border-radius: var(--radius);
  font-weight: 600; z-index: 100;
}
.skip-link:focus { left: 1rem; top: 1rem; }