/* ── Header ── */
header {
  background: var(--white);
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.08);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 var(--pad-x);
  height: 68px;
}

/* ── Logo ── */
.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  z-index: 20;
}

.logo img {
  height: 40px;
  width: auto;
}

/* ── Nav ── */
nav {
  display: flex;
  align-items: center;
  gap: 36px;
}

nav a {
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-nav);
  position: relative;
  padding-bottom: 4px;
  transition: color var(--t);
}

nav a:hover {
  background: var(--grad);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

nav a.active {
  background: var(--grad);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

nav a.active::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--grad);
  border-radius: 2px;
}

/* ── Connect button ── */
.btn-connect {
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 600;
  background: var(--grad);
  -webkit-text-fill-color: var(--white);
  color: var(--white);
  padding: 10px 24px;
  border-radius: var(--radius-pill);
  transition: transform var(--t), opacity var(--t);
  white-space: nowrap;
}

.btn-connect::after {
  display: none !important;
}

.btn-connect:hover {
  background: var(--grad);
  -webkit-background-clip: unset;
  background-clip: unset;
  -webkit-text-fill-color: var(--white);
  transform: translateY(-2px);
  opacity: 0.88;
}

/* Active state: gradient border + gradient text, white fill */
.btn-connect.active-connect {
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  position: relative;
  opacity: 1;
}

.btn-connect.active-connect::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: var(--radius-pill);
  padding: 1.5px;
  background: var(--grad);
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: destination-out;
  mask-composite: exclude;
  pointer-events: none;
}

.btn-connect.active-connect:hover {
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  transform: none;
  opacity: 1;
}

/* ── Hamburger ── */
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 36px;
  height: 36px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  z-index: 20;
}

.hamburger span {
  display: block;
  height: 2px;
  background: var(--dark);
  border-radius: 2px;
  transition: transform 0.3s, opacity 0.3s;
}

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

/* ── Mobile nav drawer ── */
@media (max-width: 768px) {
  .hamburger {
    display: flex;
  }

  nav {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    position: absolute;
    top: 68px;
    left: 0;
    right: 0;
    background: var(--white);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    padding: 0 var(--pad-x);
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.35s ease, padding 0.35s ease;
  }

  nav.open {
    max-height: 400px;
    padding: 12px var(--pad-x) 20px;
  }

  nav a {
    width: 100%;
    padding: 12px 0;
    font-size: 1rem;
    border-bottom: 1px solid #f0f0f0;
  }

  nav a.active::after {
    display: none;
  }

  nav a.active {
    background: var(--grad);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 600;
  }

  .btn-connect {
    margin-top: 8px;
    width: 100%;
    text-align: center;
    border-bottom: none !important;
    padding: 12px var(--pad-x);
  }
}

@media (max-width: 480px) {
  .header-inner {
    padding: 0 16px;
  }

  .logo img {
    height: 34px;
  }
}