/* ===== Fintech header – logo, centered nav, dropdowns, actions ===== */
.site-header {
  --h-dark: #0f172a;
  --h-accent: #7c3aed;
  --h-accent-hover: #6d28d9;
  --h-text: #0f172a;
  --h-muted: #475569;
  --h-font: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(15, 23, 42, 0.06);
  transition: box-shadow 0.25s ease;
}

.site-header.is-scrolled {
  box-shadow: 0 4px 20px rgba(15, 23, 42, 0.06);
}

.header-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 1.25rem;
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

/* Logo */
.header-logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
  color: var(--h-dark);
  font-weight: 700;
  font-size: 1.35rem;
  letter-spacing: -0.02em;
  flex-shrink: 0;
}

.header-logo img {
  height: 36px;
  width: auto;
  display: block;
}

.header-logo:hover {
  color: var(--h-accent);
}

/* Center nav */
.header-nav {
  display: none;
}

@media (min-width: 992px) {
  .header-nav {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.25rem;
    flex: 1;
    max-width: 560px;
  }
}

.header-nav a,
.header-nav .nav-drop-trigger {
  position: relative;
  padding: 0.5rem 0.75rem;
  color: var(--h-text);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.9375rem;
  transition: color 0.2s ease;
  border: none;
  background: none;
  font-family: var(--h-font);
  cursor: pointer;
}

.header-nav a::after,
.header-nav .nav-drop-trigger::after {
  content: '';
  position: absolute;
  left: 0.75rem;
  right: 0.75rem;
  bottom: 0.25rem;
  height: 2px;
  background: var(--h-accent);
  transform: scaleX(0);
  transition: transform 0.25s ease;
}

.header-nav a:hover::after,
.header-nav .nav-drop-trigger:hover::after,
.header-nav a.is-active::after {
  transform: scaleX(1);
}

.header-nav a:hover,
.header-nav .nav-drop-trigger:hover {
  color: var(--h-accent);
}

.nav-drop-trigger {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
}

.nav-drop-trigger svg {
  width: 14px;
  height: 14px;
  transition: transform 0.2s ease;
}

.nav-item.has-dropdown.is-open .nav-drop-trigger svg {
  transform: rotate(180deg);
}

/* Dropdown */
.nav-dropdown {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(6px);
  min-width: 180px;
  padding: 0.5rem;
  background: #fff;
  border-radius: 10px;
  box-shadow: 0 10px 40px rgba(15, 23, 42, 0.12);
  border: 1px solid rgba(15, 23, 42, 0.08);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.2s ease, visibility 0.2s ease, transform 0.2s ease;
  z-index: 50;
}

.nav-item.has-dropdown.is-open .nav-dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(4px);
}

.nav-dropdown a {
  display: block;
  padding: 0.5rem 0.75rem;
  border-radius: 6px;
  font-size: 0.875rem;
}

.nav-dropdown a::after {
  display: none;
}

.nav-item {
  position: relative;
}

/* Right actions */
.header-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-shrink: 0;
}

.header-lang {
  display: none;
}

@media (min-width: 992px) {
  .header-lang {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.5rem 0.75rem;
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--h-text);
    background: #fff;
    border: 1px solid rgba(15, 23, 42, 0.12);
    border-radius: 10px;
    cursor: pointer;
    font-family: var(--h-font);
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
  }
  .header-lang:hover {
    border-color: var(--h-accent);
  }
  .header-lang svg {
    width: 18px;
    height: 18px;
    color: var(--h-muted);
  }
}

.header-login {
  display: none;
}

@media (min-width: 992px) {
  .header-login {
    display: inline-block;
    padding: 0.5rem 0.25rem;
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--h-text);
    text-decoration: none;
    position: relative;
    transition: color 0.2s ease;
  }
  .header-login::after {
    content: '';
    position: absolute;
    left: 0.25rem;
    right: 0.25rem;
    bottom: 0.25rem;
    height: 1px;
    background: var(--h-accent);
    transform: scaleX(0);
    transition: transform 0.2s ease;
  }
  .header-login:hover {
    color: var(--h-accent);
  }
  .header-login:hover::after {
    transform: scaleX(1);
  }
}

.header-signup {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.5rem 1.25rem;
  font-size: 0.9375rem;
  font-weight: 600;
  color: #fff;
  background: linear-gradient(135deg, var(--h-accent) 0%, var(--h-accent-hover) 100%);
  border: none;
  border-radius: 10px;
  text-decoration: none;
  font-family: var(--h-font);
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease, opacity 0.2s ease;
}

.header-signup:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(124, 58, 237, 0.35);
}

.header-signup:focus-visible {
  outline: 2px solid var(--h-accent);
  outline-offset: 2px;
}

/* Mobile menu button */
.header-menu-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  padding: 0;
  border: none;
  background: none;
  color: var(--h-text);
  cursor: pointer;
  border-radius: 10px;
  transition: background 0.2s ease;
}

.header-menu-btn:hover {
  background: rgba(15, 23, 42, 0.06);
}

@media (min-width: 992px) {
  .header-menu-btn {
    display: none;
  }
}

.header-menu-btn svg {
  width: 24px;
  height: 24px;
}

/* Mobile nav */
.header-mobile-nav {
  display: block;
  padding: 1rem 1.25rem;
  border-top: 1px solid rgba(15, 23, 42, 0.08);
  background: #fff;
}

@media (min-width: 992px) {
  .header-mobile-nav {
    display: none;
  }
}

.header-mobile-nav .nav-dropdown {
  position: static;
  transform: none;
  box-shadow: none;
  border: none;
  border-radius: 0;
  padding-left: 1rem;
  margin-top: 0.25rem;
  max-height: 0;
  overflow: hidden;
  opacity: 1;
  visibility: visible;
  transition: max-height 0.3s ease;
}

.header-mobile-nav .nav-item.has-dropdown.is-open .nav-dropdown {
  max-height: 200px;
}

.header-mobile-nav a,
.header-mobile-nav .nav-drop-trigger {
  display: block;
  padding: 0.6rem 0;
  font-size: 1rem;
}

.header-mobile-nav .nav-drop-trigger::after {
  display: none;
}

.header-mobile-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid rgba(15, 23, 42, 0.08);
}

@media (min-width: 992px) {
  .header-mobile-actions {
    display: none;
  }
}

.header-mobile-actions .header-lang {
  display: inline-flex;
}

.header-mobile-actions .header-login {
  display: inline-block;
}