/* ZEROON.ONE — components */

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--s-3);
  padding: 0.875rem 1.375rem;
  border-radius: var(--radius-pill);
  font-weight: 600;
  font-size: var(--fs-16);
  letter-spacing: -0.01em;
  border: 1px solid transparent;
  cursor: pointer;
  transition:
    transform var(--dur-fast) var(--ease-out),
    box-shadow var(--dur-base) var(--ease-out),
    background var(--dur-base) var(--ease-out),
    color var(--dur-base) var(--ease-out);
  white-space: nowrap;
  text-decoration: none;
}
.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0); }

.btn-primary {
  background: var(--gradient-1);
  color: #fff;
  box-shadow: var(--glow-md), inset 0 1px 0 rgba(255,255,255,0.18);
}
.btn-primary:hover { box-shadow: var(--glow-lg), inset 0 1px 0 rgba(255,255,255,0.22); color: #fff; }

.btn-ghost {
  background: transparent;
  color: var(--text-0);
  border-color: var(--line-strong);
}
.btn-ghost:hover { border-color: var(--brand-violet-2); background: var(--bg-glass); color: var(--text-0); }

.btn-sm { padding: 0.5rem 0.875rem; font-size: var(--fs-14); }

.btn .arrow { transition: transform var(--dur-base) var(--ease-out); }
.btn:hover .arrow { transform: translateX(3px); }

/* ---------- Nav ---------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  background: rgba(5, 6, 13, 0.6);
  border-bottom: 1px solid transparent;
  transition: border-color var(--dur-base), background var(--dur-base);
}
.nav.is-scrolled {
  border-color: var(--line);
  background: rgba(5, 6, 13, 0.82);
}
.nav-inner {
  height: var(--nav-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--s-6);
}
.nav-logo {
  display: inline-flex;
  align-items: center;
  gap: var(--s-2);
  font-family: "Space Grotesk", sans-serif;
  font-weight: 700;
  font-size: var(--fs-18);
  letter-spacing: -0.01em;
  color: var(--text-0);
}
.nav-logo svg { width: 28px; height: 28px; }
.nav-logo span b { font-weight: 700; }
.nav-logo span i { font-weight: 500; color: var(--text-1); font-style: normal; }

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--s-8);
  list-style: none;
  margin: 0; padding: 0;
}
.nav-links a {
  font-size: var(--fs-14);
  color: var(--text-1);
  font-weight: 500;
}
.nav-links a:hover { color: var(--text-0); }

.nav-actions {
  display: flex;
  align-items: center;
  gap: var(--s-3);
}

.lang {
  display: inline-flex;
  align-items: center;
  padding: 0.25rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-pill);
  font-size: var(--fs-12);
  font-weight: 600;
  letter-spacing: 0.04em;
}
.lang a {
  padding: 0.25rem 0.625rem;
  border-radius: var(--radius-pill);
  color: var(--text-2);
}
.lang a[aria-current="true"] {
  background: var(--bg-glass);
  color: var(--text-0);
}

.nav-burger {
  display: none;
  background: none;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 0.5rem;
  cursor: pointer;
}
.nav-burger svg { width: 20px; height: 20px; stroke: var(--text-0); }

@media (max-width: 880px) {
  .nav-links { display: none; }
  .nav-burger { display: inline-flex; }
  .nav.is-open .nav-links {
    display: flex;
    position: absolute;
    top: var(--nav-h);
    left: 0; right: 0;
    flex-direction: column;
    gap: var(--s-4);
    background: rgba(5, 6, 13, 0.96);
    backdrop-filter: blur(18px);
    padding: var(--s-6) var(--s-6) var(--s-8);
    border-bottom: 1px solid var(--line);
  }
  .nav-actions .btn { display: none; }
}

/* ---------- Card (glass) ---------- */
.card {
  position: relative;
  border-radius: var(--radius-lg);
  padding: var(--s-8);
  background: linear-gradient(180deg, rgba(255,255,255,0.02), rgba(255,255,255,0.005));
  border: 1px solid var(--line);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  overflow: hidden;
  transition: border-color var(--dur-base) var(--ease-out), transform var(--dur-base) var(--ease-out);
}
.card::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 1px;
  background: linear-gradient(135deg, rgba(139,92,246,0.35), rgba(59,130,246,0.08) 50%, transparent);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
  opacity: 0.7;
  transition: opacity var(--dur-base) var(--ease-out);
}
.card:hover { transform: translateY(-2px); border-color: var(--line-strong); }
.card:hover::before { opacity: 1; }

.card-glow-violet::after,
.card-glow-blue::after {
  content: "";
  position: absolute;
  inset: auto auto -40% -20%;
  width: 140%; height: 80%;
  background: radial-gradient(ellipse at center, rgba(139,92,246,0.18), transparent 60%);
  pointer-events: none;
  filter: blur(24px);
  opacity: 0.55;
}
.card-glow-blue::after { background: radial-gradient(ellipse at center, rgba(59,130,246,0.18), transparent 60%); }

/* ---------- Chip ---------- */
.chip {
  display: inline-flex;
  align-items: center;
  gap: var(--s-2);
  padding: 0.35rem 0.75rem;
  border-radius: var(--radius-pill);
  font-size: var(--fs-12);
  font-weight: 600;
  letter-spacing: 0.02em;
  border: 1px solid var(--line-strong);
  color: var(--brand-violet-2);
  background: var(--bg-glass);
  white-space: nowrap;
}
.chip-blue { color: var(--brand-blue-2); border-color: rgba(59,130,246,0.35); background: rgba(59,130,246,0.06); }
.chip-warn { color: var(--accent-warn); border-color: var(--accent-warn); background: var(--accent-warn-soft); }
.chip-ok { color: var(--accent-ok); border-color: var(--accent-ok); background: var(--accent-ok-soft); }

/* ---------- Icon bubble ---------- */
.icon-bubble {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 64px; height: 64px;
  border-radius: 50%;
  background: radial-gradient(circle at 35% 30%, rgba(139,92,246,0.45), rgba(139,92,246,0.05) 70%);
  border: 1px solid var(--line-strong);
  box-shadow: var(--glow-sm), inset 0 0 24px rgba(139,92,246,0.15);
  color: var(--brand-violet-2);
}
.icon-bubble.blue {
  background: radial-gradient(circle at 35% 30%, rgba(59,130,246,0.45), rgba(59,130,246,0.05) 70%);
  border-color: rgba(59,130,246,0.38);
  box-shadow: 0 0 24px rgba(59,130,246,0.35), inset 0 0 24px rgba(59,130,246,0.15);
  color: var(--brand-blue-2);
}
.icon-bubble svg { width: 28px; height: 28px; }

/* ---------- FAQ ---------- */
.faq { display: grid; gap: var(--s-3); }
.faq-item {
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: rgba(11, 13, 26, 0.6);
  overflow: hidden;
  transition: border-color var(--dur-base);
}
.faq-item[open] { border-color: var(--line-strong); }
.faq-item summary {
  list-style: none;
  cursor: pointer;
  padding: var(--s-5) var(--s-6);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--s-4);
  font-weight: 600;
  color: var(--text-0);
  font-size: var(--fs-18);
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: "+";
  font-family: "Space Grotesk", sans-serif;
  font-size: var(--fs-24);
  color: var(--brand-violet-2);
  transition: transform var(--dur-base) var(--ease-out);
  flex: 0 0 auto;
}
.faq-item[open] summary::after { transform: rotate(45deg); }
.faq-item .faq-body {
  padding: 0 var(--s-6) var(--s-5);
  color: var(--text-1);
  font-size: var(--fs-16);
}

/* ---------- Footer ---------- */
.footer {
  border-top: 1px solid var(--line);
  padding-block: var(--s-16) var(--s-8);
  margin-top: var(--s-24);
  background: linear-gradient(180deg, transparent, rgba(139,92,246,0.05));
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr;
  gap: var(--s-10);
  margin-bottom: var(--s-10);
}
@media (max-width: 780px) {
  .footer-grid { grid-template-columns: 1fr; gap: var(--s-8); }
}
.social-icons {
  display: inline-flex;
  gap: var(--s-3);
  margin-top: var(--s-5);
}
.social-icons a {
  width: 36px; height: 36px;
  display: inline-flex; align-items: center; justify-content: center;
  border: 1px solid var(--line);
  border-radius: 50%;
  color: var(--text-1);
  transition: border-color var(--dur-base), color var(--dur-base), background var(--dur-base);
}
.social-icons a:hover {
  color: var(--text-0);
  border-color: var(--brand-violet-2);
  background: var(--bg-glass);
}
.social-icons svg { width: 16px; height: 16px; }
.footer-email {
  display: inline-flex;
  align-items: center;
  gap: var(--s-2);
  margin-top: var(--s-4);
  color: var(--brand-violet-2);
  font-size: var(--fs-14);
  font-weight: 500;
}
.footer-email:hover { color: var(--text-0); }
.footer h5 {
  font-family: "Space Grotesk", sans-serif;
  font-size: var(--fs-14);
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--text-2);
  font-weight: 500;
  margin-bottom: var(--s-4);
}
.footer ul { list-style: none; padding: 0; margin: 0; display: grid; gap: var(--s-3); }
.footer li a { color: var(--text-1); font-size: var(--fs-14); }
.footer li a:hover { color: var(--text-0); }

.footer-brand p { color: var(--text-2); font-size: var(--fs-14); max-width: 34ch; margin-top: var(--s-4); }

.footer-bar {
  border-top: 1px solid var(--line);
  padding-top: var(--s-6);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--s-4);
  flex-wrap: wrap;
  color: var(--text-2);
  font-size: var(--fs-12);
}
.footer-bar a { color: var(--text-2); }
.footer-bar a:hover { color: var(--text-0); }

/* ---------- Form ---------- */
.form-field { display: grid; gap: var(--s-2); }
.form-field label {
  font-size: var(--fs-14);
  font-weight: 500;
  color: var(--text-1);
}
.form-field input[type="text"],
.form-field input[type="email"],
.form-field textarea {
  width: 100%;
  background: rgba(11, 13, 26, 0.7);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 0.875rem 1rem;
  color: var(--text-0);
  font-size: var(--fs-16);
  transition: border-color var(--dur-base), background var(--dur-base);
}
.form-field input:focus,
.form-field textarea:focus {
  outline: none;
  border-color: var(--brand-violet);
  background: rgba(11, 13, 26, 0.95);
}
.form-field textarea { min-height: 112px; resize: vertical; }
.form-field .err {
  color: #FCA5A5;
  font-size: var(--fs-12);
  min-height: 1em;
}
.honey { position: absolute; left: -9999px; opacity: 0; pointer-events: none; }

.choice-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--s-3);
}
.choice {
  position: relative;
  cursor: pointer;
  display: flex;
  align-items: flex-start;
  gap: var(--s-3);
  padding: var(--s-5);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: rgba(11, 13, 26, 0.55);
  transition: border-color var(--dur-base), background var(--dur-base), transform var(--dur-fast);
}
.choice:hover { border-color: var(--line-strong); transform: translateY(-1px); }
.choice input { position: absolute; opacity: 0; }
.choice input:focus-visible + .choice-dot { outline: 2px solid var(--brand-violet); outline-offset: 3px; }
.choice-dot {
  flex: 0 0 auto;
  width: 18px; height: 18px;
  border-radius: 50%;
  border: 2px solid var(--line-strong);
  margin-top: 3px;
  position: relative;
  transition: border-color var(--dur-base), background var(--dur-base);
}
.choice input:checked + .choice-dot {
  border-color: var(--brand-violet);
  background: var(--gradient-1);
  box-shadow: var(--glow-sm);
}
.choice input:checked ~ .choice-text strong { color: var(--text-0); }
.choice:has(input:checked) { border-color: var(--brand-violet); background: var(--bg-glass); }
.choice-text strong {
  display: block;
  color: var(--text-0);
  font-size: var(--fs-16);
  font-weight: 600;
  margin-bottom: 2px;
}
.choice-text span { color: var(--text-2); font-size: var(--fs-14); }

.progress {
  display: flex;
  align-items: center;
  gap: var(--s-3);
  margin-bottom: var(--s-8);
  font-size: var(--fs-12);
  color: var(--text-2);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-weight: 600;
}
.progress-bar {
  flex: 1;
  height: 4px;
  background: var(--line);
  border-radius: var(--radius-pill);
  overflow: hidden;
}
.progress-bar > i {
  display: block;
  height: 100%;
  width: 0;
  background: var(--gradient-2);
  border-radius: inherit;
  transition: width var(--dur-slow) var(--ease-out);
}

.step-actions {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--s-4);
  margin-top: var(--s-8);
}
.step-actions .btn-ghost.back {
  border-color: var(--line);
  color: var(--text-1);
}

[hidden] { display: none !important; }