/* =======================================================
   shared.css — общие компоненты novirx
   Шапка, навигация, кнопки, футер, переключатель темы
   ======================================================= */

/* ---------- Header ---------- */
.header {
  position: fixed;
  top: 1.5rem;
  left: 50%;
  transform: translateX(-50%);
  width: min(1140px, calc(100% - 2.5rem));
  z-index: 1000;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  background: rgba(3, 0, 20, 0.5);
  border: 1px solid rgba(255, 255, 255, 0.07);
  border-radius: 24px;
  transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.45);
}

.header.scrolled {
  top: 0.75rem;
  background: rgba(5, 2, 18, 0.85);
  border-color: rgba(255, 46, 147, 0.25);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.65), 0 0 30px rgba(255, 46, 147, 0.12);
}

/* Scrolling border highlight */
.header::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 1px;
  background: linear-gradient(90deg,
    transparent 0%,
    rgba(255, 107, 43, 0.4) 30%,
    rgba(255, 46, 147, 0.6) 50%,
    rgba(0, 240, 255, 0.4) 70%,
    transparent 100%);
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.4s ease;
  background-size: 200% 100%;
  animation: border-sweep 4s linear infinite;
}

.header.scrolled::after {
  opacity: 1;
}

@keyframes border-sweep {
  0% { background-position: 0% 50%; }
  100% { background-position: 200% 50%; }
}

/* ---------- Nav ---------- */
.nav {
  display: flex;
  align-items: center;
  gap: 2rem;
  padding: 0.6rem 1.25rem;
  position: relative;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  text-decoration: none;
  color: var(--white);
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.25rem;
  letter-spacing: -0.03em;
  position: relative;
  transition: opacity 0.25s ease;
}

.logo:hover {
  opacity: 0.95;
}

.logo-name {
  color: #ffffff;
  font-weight: 800;
  position: relative;
  transition: color 0.3s ease;
}

.logo img {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  object-fit: contain;
  display: block;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(255, 255, 255, 0.03);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.35);
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1), border-color 0.3s ease, box-shadow 0.3s ease;
}

.logo:hover img {
  transform: scale(1.05);
  border-color: rgba(255, 46, 147, 0.4);
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.5), 0 0 15px rgba(255, 46, 147, 0.2);
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 0.75rem;
  margin-left: auto;
}

.nav-links a {
  text-decoration: none;
  color: var(--gray);
  font-weight: 700;
  font-size: 0.9rem;
  position: relative;
  padding: 0.5rem 1rem;
  border-radius: 12px;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.nav-links a:hover,
.nav-links a.nav-active {
  color: var(--white);
  background: rgba(255, 255, 255, 0.05);
  box-shadow: inset 0 1px 1px rgba(255, 255, 255, 0.08);
}

/* ---------- Burger ---------- */
.burger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  cursor: pointer;
  width: 42px;
  height: 42px;
  padding: 0 9px;
}

.burger span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform 0.3s ease, opacity 0.3s ease;
}

.nav.open .burger span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav.open .burger span:nth-child(2) { opacity: 0; }
.nav.open .burger span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.8rem 1.65rem;
  border-radius: 50px;
  font-family: var(--font);
  font-weight: 800;
  font-size: 0.95rem;
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
  position: relative;
  transition: transform var(--transition), box-shadow var(--transition),
    background var(--transition), border-color var(--transition), color var(--transition);
}

.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(0); }

.btn-sm {
  padding: 0.5rem 1.25rem;
  font-size: 0.875rem;
  background: var(--gradient);
  color: var(--white);
  box-shadow: 0 4px 18px rgba(233, 30, 140, 0.4);
}

.btn-sm:hover { box-shadow: 0 8px 28px rgba(233, 30, 140, 0.55); }

.btn-primary {
  background: var(--gradient);
  color: var(--white);
  box-shadow: 0 8px 30px rgba(233, 30, 140, 0.4);
  overflow: hidden;
}

.btn-primary::before {
  content: '';
  position: absolute;
  top: 0;
  bottom: 0;
  left: -80%;
  width: 50%;
  background: linear-gradient(105deg, transparent, rgba(255, 255, 255, 0.35), transparent);
  transform: skewX(-20deg);
  transition: left 0.5s ease;
}

.btn-primary:hover { box-shadow: 0 12px 42px rgba(233, 30, 140, 0.55); }
.btn-primary:hover::before { left: 130%; }

.btn-outline {
  background: var(--surface);
  color: var(--text);
  border-color: var(--border);
  backdrop-filter: blur(8px);
}

.btn-outline:hover {
  border-color: var(--border-hover);
  color: var(--white);
  background: var(--surface-strong);
}

/* ---------- Theme Toggle ---------- */
.theme-toggle {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--gray);
  padding: 0.5rem;
  margin-right: 0.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  transition: color var(--transition), background var(--transition), transform var(--transition);
}

.theme-toggle:hover {
  color: var(--pink);
  background: rgba(255, 255, 255, 0.05);
  transform: rotate(15deg);
}

.theme-toggle .sun { display: none; }
.theme-toggle .moon { display: block; }
body.light-theme .theme-toggle .sun { display: block; }
body.light-theme .theme-toggle .moon { display: none; }

/* ---------- Footer ---------- */
.footer {
  padding: 4rem 0 2rem;
  border-top: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.01);
  position: relative;
}

.footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 10%;
  right: 10%;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255, 46, 147, 0.25), rgba(0, 240, 255, 0.15), transparent);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.8fr repeat(4, 1fr);
  gap: 2rem;
  margin-bottom: 3rem;
}

.footer-brand { padding-right: 2rem; }

.footer-tagline {
  color: var(--gray);
  font-size: 0.875rem;
  line-height: 1.6;
  margin-top: 0.75rem;
  max-width: 280px;
}

.footer-col-title {
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--white);
  margin-bottom: 1rem;
}

.footer-links {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.footer-links a {
  color: var(--gray);
  text-decoration: none;
  font-size: 0.85rem;
  font-weight: 500;
  transition: color var(--transition), transform var(--transition);
  display: inline-block;
}

.footer-links a:hover {
  color: var(--white);
  transform: translateX(3px);
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
}

.footer-bottom p {
  color: var(--gray);
  font-size: 0.8rem;
}

.footer-domains {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.footer-domains a {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--gray);
  font-weight: 400;
  text-decoration: none;
  transition: color var(--transition);
}

.footer-domains a:hover { color: #ff7eb8; }

.footer-dot {
  color: rgba(255, 255, 255, 0.15);
  font-size: 0.7rem;
}

.logo-sm { font-size: 1.05rem; }
.logo-sm img { border-radius: 8px; }

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .header {
    width: min(1140px, calc(100% - 1.5rem));
    top: 0.85rem;
  }

  .nav {
    padding: 0.5rem 0.85rem;
    gap: 0.5rem;
  }

  .logo img { width: 36px; height: 36px; }
  .logo-name { font-size: 1.15rem; }
  .nav-links { display: none; }

  .nav > .btn-sm {
    margin-left: auto;
    padding: 0.4rem 0.85rem;
    font-size: 0.82rem;
  }

  .burger { display: flex; margin-left: 0.25rem; }

  .nav.open .nav-links {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: calc(100% + 0.6rem);
    left: 0;
    right: 0;
    margin: 0;
    background: rgba(5, 2, 18, 0.96);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    padding: 1.25rem;
    gap: 0.6rem;
    border: 1px solid var(--border);
    border-radius: 20px;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.75);
    z-index: 1000;
  }

  .nav.open .nav-links a {
    display: block;
    padding: 0.8rem 1.1rem;
    border-radius: 12px;
    font-size: 0.95rem;
    margin: 0;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.04);
  }

  .nav.open .nav-links a:hover,
  .nav.open .nav-links a.nav-active {
    background: rgba(255, 255, 255, 0.08);
    color: var(--white);
  }

  .theme-toggle { margin-left: auto; }
  .nav > .btn-sm { margin-left: 0 !important; }

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

  .footer-brand {
    grid-column: 1 / -1;
    padding-right: 0;
  }

  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.75rem;
  }

  .footer-domains { flex-wrap: wrap; }
}

@media (max-width: 480px) {
  .footer-grid { grid-template-columns: 1fr; }
}

/* ---------- Light Theme ---------- */
body.light-theme .header {
  background: rgba(240, 237, 255, 0.8);
  border-color: rgba(0, 0, 0, 0.08);
}

body.light-theme .header.scrolled {
  background: rgba(243, 242, 250, 0.95);
  border-color: rgba(255, 46, 147, 0.2);
}

body.light-theme .nav-links a {
  color: var(--gray);
}

body.light-theme .nav-links a:hover,
body.light-theme .nav-links a.nav-active {
  color: var(--white);
  background: rgba(0, 0, 0, 0.05);
}

body.light-theme .theme-toggle:hover {
  background: rgba(0, 0, 0, 0.05);
}