:root { --nav-font: 'Space Grotesk', 'Inter', sans-serif; }
html.dark { --text: #f1f5f9; }

/* ===================== THEME TOGGLE BUTTON ===================== */
.theme-toggle {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  border: none;
  background: transparent;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  padding: 0;
  position: relative;
}

.theme-toggle::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 50%;
  background: rgba(15,23,42,0.06);
  border: 1.5px solid rgba(15,23,42,0.1);
  transition: all 0.3s ease;
}

.theme-toggle::after {
  content: '';
  position: absolute;
  inset: -2px;
  border-radius: 50%;
  background: linear-gradient(135deg, #00CFFF, #0099cc, #FF00D4);
  opacity: 0;
  transition: opacity 0.3s ease;
  z-index: -1;
}

.theme-toggle:hover::after { opacity: 1; }

.theme-toggle:hover::before {
  background: rgba(0,207,255,0.08);
  border-color: transparent;
  box-shadow: 0 0 16px rgba(0,207,255,0.3);
}

.theme-toggle:active { transform: scale(0.9); }

.theme-toggle svg {
  width: 16px;
  height: 16px;
  stroke: #475569;
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
  transition: stroke 0.2s, transform 0.4s ease;
  flex-shrink: 0;
  position: relative;
  z-index: 1;
}

.theme-toggle:hover svg { stroke: #0099cc; transform: rotate(20deg); }

html.dark .theme-toggle::before {
  background: rgba(255,255,255,0.06);
  border-color: rgba(255,255,255,0.1);
}

html.dark .theme-toggle:hover::before {
  background: rgba(0,207,255,0.08);
  box-shadow: 0 0 16px rgba(0,207,255,0.4);
}

html.dark .theme-toggle svg { stroke: #7a8fa8; }
html.dark .theme-toggle:hover svg { stroke: #00CFFF; }

.theme-toggle .icon-sun { display: none; }
.theme-toggle .icon-moon { display: block; }
html.dark .theme-toggle .icon-sun { display: block; }
html.dark .theme-toggle .icon-moon { display: none; }

html { scroll-behavior: smooth; }

body {
  transition: background-color 0.3s ease, color 0.3s ease;
  background: var(--bg);
  color: var(--text);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a { text-decoration: none; color: inherit; }
ul { list-style: none; }
img { display: block; max-width: 100%; }

::selection {
  background: rgba(2,132,199,0.15);
  color: #0f172a;
}

::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: #f1f5f9; }
::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, #00CFFF, #0099cc, #FF00D4);
  border-radius: 3px;
}

.gradient-text {
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ===================== NAVBAR ===================== */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  min-height: 84px;
  height: 84px;
  display: flex;
  align-items: center;
  padding: 0 48px;
  overflow: hidden;
  background: rgba(6,13,24,0.45);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid rgba(255,255,255,0.05);
  transition: background 0.4s ease, border-color 0.4s ease, box-shadow 0.4s ease;
}

.navbar.scrolled {
  background: rgba(6,13,24,0.92);
  border-color: rgba(0,207,255,0.1);
  box-shadow: 0 2px 32px rgba(0,0,0,0.4), 0 0 0 1px rgba(0,207,255,0.05);
}

html:not(.dark) .navbar {
  background: rgba(248,250,252,0.6);
  border-bottom-color: rgba(15,23,42,0.06);
}

html:not(.dark) .navbar.scrolled {
  background: rgba(248,250,252,0.95);
  border-color: rgba(15,23,42,0.1);
  box-shadow: 0 2px 24px rgba(15,23,42,0.07);
}

.nav-inner {
  max-width: 1440px;
  width: 100%;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 0;
}

.nav-center {
  justify-self: center;
}

.nav-right {
  display: flex;
  align-items: center;
  gap: 8px;
  justify-self: end;
}

.nav-logo {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
  flex-shrink: 0;
  background: transparent !important;
  border: none !important;
  box-shadow: none !important;
  padding: 0 !important;
  border-radius: 0 !important;
  transition: opacity 0.2s ease;
}

.nav-logo::before,
.nav-logo::after {
  display: none !important;
  content: none !important;
}

.nav-logo:hover {
  opacity: 0.85;
}

/* Legacy img logo (footer) — untouched */
.nav-logo-img {
  height: 52px;
  width: auto;
  display: block;
  object-fit: contain;
}

/* Navbar wordmark image */
.nav-logo-wordmark {
  height: 48px;
  width: auto;
  max-width: min(200px, 38vw);
  display: block;
  object-fit: contain;
  object-position: left center;
  filter: none;
}

html.dark .nav-logo-wordmark {
  mix-blend-mode: screen;
}

@media (max-width: 1024px) {
  .nav-logo-wordmark { height: 42px; max-width: min(180px, 42vw); }
}

@media (max-width: 900px) {
  .nav-logo-wordmark { height: 34px; max-width: min(150px, 46vw); }
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 6px;
}

.nav-links a {
  font-family: var(--nav-font);
  font-size: 14px;
  font-weight: 500;
  color: rgba(255,255,255,0.55);
  padding: 8px 16px;
  border-radius: 8px;
  position: relative;
  transition: color 0.25s ease;
  white-space: nowrap;
  letter-spacing: -0.1px;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: 2px;
  left: 50%;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, #00CFFF, #FF00D4);
  border-radius: 2px;
  transform: translateX(-50%);
  transition: width 0.3s ease-out;
  box-shadow: 0 0 8px rgba(0,207,255,0.5);
}

.nav-links a:hover {
  color: #ffffff;
}

.nav-links a:hover::after {
  width: calc(100% - 32px);
}

.nav-links a.active {
  color: #00CFFF;
  background: none;
  -webkit-text-fill-color: unset;
  font-weight: 600;
}

.nav-links a.active::after {
  width: calc(100% - 32px);
}

html:not(.dark) .nav-links a { color: #5a6a7e; }
html:not(.dark) .nav-links a:hover { color: #0f172a; }
html:not(.dark) .nav-links a.active { color: #0099cc; }

.nav-login {
  font-family: var(--nav-font);
  color: #94a3b8;
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  padding: 10px 16px;
  border-radius: 10px;
  transition: color .2s, background .2s;
  white-space: nowrap;
}
.nav-login:hover { color: #fff; background: rgba(255,255,255,0.06); }
html:not(.dark) .nav-login { color: #475569; }
html:not(.dark) .nav-login:hover { color: #0f172a; background: rgba(0,0,0,0.05); }

/* Logged-in nav state */
.nav-user-wrap { display: flex; align-items: center; gap: 6px; }
.nav-user-name { font-family: var(--nav-font); font-size: 14px; font-weight: 600; color: #94a3b8; text-decoration: none; padding: 10px 14px; border-radius: 10px; white-space: nowrap; transition: color .2s, background .2s; }
.nav-user-name:hover { color: #fff; background: rgba(255,255,255,.06); }
html:not(.dark) .nav-user-name { color: #475569; }
html:not(.dark) .nav-user-name:hover { color: #0f172a; background: rgba(0,0,0,.05); }
.nav-signout { font-family: var(--nav-font); font-size: 13px; font-weight: 600; color: #94a3b8; background: transparent; border: 1px solid rgba(148,163,184,.25); padding: 7px 13px; border-radius: 10px; cursor: pointer; white-space: nowrap; transition: color .2s, border-color .2s, background .2s; }
.nav-signout:hover { color: #ff7d72; border-color: rgba(255,125,114,.45); background: rgba(255,125,114,.07); }
html:not(.dark) .nav-signout { color: #64748b; border-color: rgba(100,116,139,.25); }
html:not(.dark) .nav-signout:hover { color: #dc2626; border-color: rgba(220,38,38,.4); background: rgba(220,38,38,.06); }
.nav-user-wrap--mobile { flex-direction: column; align-items: flex-start; gap: 8px; }
.nav-user-wrap--mobile .nav-signout { border: none; padding: 10px 0; font-size: 14px; }

.nav-cta {
  font-family: var(--nav-font) !important;
  background: linear-gradient(90deg, #00CFFF, #0099cc, #FF00D4) !important;
  color: #ffffff !important;
  -webkit-text-fill-color: #ffffff !important;
  padding: 11px 26px !important;
  border-radius: 10px !important;
  font-weight: 700 !important;
  font-size: 14px !important;
  transition: all 0.3s ease !important;
  display: inline-flex !important;
  align-items: center !important;
  gap: 7px !important;
  position: relative;
  overflow: hidden;
  letter-spacing: -0.1px;
}

.nav-cta::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(255,255,255,0.15), transparent);
  opacity: 0;
  transition: opacity 0.3s;
}

.nav-cta:hover {
  box-shadow: 0 0 28px rgba(0,207,255,0.55), 0 4px 20px rgba(255,0,212,0.35) !important;
  transform: translateY(-1px) scale(1.02) !important;
}

.nav-cta:hover::before { opacity: 1; }
.nav-cta:active { transform: scale(0.98) !important; }
.nav-cta::after { display: none !important; }

.nav-cta-arrow {
  width: 14px; height: 14px;
  flex-shrink: 0;
  transition: transform 0.3s ease;
}

.nav-cta:hover .nav-cta-arrow {
  transform: translateX(3px);
}

.nav-dropdown { position: relative; }

.nav-dropdown-menu {
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  min-width: 180px;
  background: #0f1e32;
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius-sm);
  padding: 6px;
  opacity: 0;
  pointer-events: none;
  transform: translateY(-8px);
  transition: opacity 0.2s, transform 0.2s;
  z-index: 100;
  box-shadow: 0 8px 32px rgba(0,0,0,0.3);
}

.nav-dropdown:hover .nav-dropdown-menu {
  opacity: 1;
  pointer-events: all;
  transform: translateY(0);
}

.nav-dropdown-menu a {
  display: block;
  font-size: 13px;
  color: rgba(255,255,255,0.6);
  padding: 8px 12px;
  border-radius: 6px;
  transition: color 0.15s, background 0.15s;
}

.nav-dropdown-menu a:hover { color: #00CFFF; background: rgba(0,207,255,0.06); }

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 8px;
  background: none;
  border: none;
  border-radius: 8px;
  transition: background 0.2s;
}

.hamburger:hover { background: rgba(0,207,255,0.08); }

.hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform 0.3s ease, opacity 0.3s ease, background 0.3s ease;
}

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

/* Mobile menu — full overlay with blur */
.mobile-menu {
  display: none;
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(6,13,24,0.96);
  backdrop-filter: blur(24px) saturate(180%);
  -webkit-backdrop-filter: blur(24px) saturate(180%);
  z-index: 998;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 8px;
  padding: 96px 40px 48px;
  overflow-y: auto;
}

.mobile-menu.open { display: flex; }

.mobile-menu a {
  font-family: var(--nav-font);
  font-size: 22px;
  font-weight: 600;
  color: rgba(255,255,255,0.65);
  padding: 16px 32px;
  border-radius: 12px;
  width: 100%;
  max-width: 320px;
  text-align: center;
  border-bottom: none;
  transition: color 0.25s ease, background 0.25s ease, transform 0.25s ease;
  opacity: 0;
  transform: translateY(20px);
}

.mobile-menu.open a {
  opacity: 1;
  transform: translateY(0);
}

.mobile-menu.open a:nth-child(1) { transition-delay: 0.05s; }
.mobile-menu.open a:nth-child(2) { transition-delay: 0.1s; }
.mobile-menu.open a:nth-child(3) { transition-delay: 0.15s; }
.mobile-menu.open a:nth-child(4) { transition-delay: 0.2s; }
.mobile-menu.open a:nth-child(5) { transition-delay: 0.25s; }
.mobile-menu.open a:nth-child(6) { transition-delay: 0.3s; }

.mobile-menu a:hover {
  color: #00CFFF;
  background: rgba(0,207,255,0.08);
  transform: scale(1.02);
}

.mobile-menu a.nav-cta-mobile {
  background: linear-gradient(90deg, #00CFFF, #0099cc, #FF00D4) !important;
  color: #ffffff !important;
  -webkit-text-fill-color: #ffffff !important;
  font-weight: 700 !important;
  margin-top: 16px;
  border-radius: 12px;
  font-size: 16px;
  box-shadow: 0 0 24px rgba(0,207,255,0.3);
}

.mobile-menu a.nav-cta-mobile:hover {
  box-shadow: 0 0 36px rgba(0,207,255,0.5), 0 4px 16px rgba(255,0,212,0.3);
  transform: scale(1.04);
}

.mobile-menu-close {
  position: absolute;
  top: 24px;
  right: 24px;
  width: 44px;
  height: 44px;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background 0.2s, transform 0.2s;
}

.mobile-menu-close:hover {
  background: rgba(0,207,255,0.15);
  transform: rotate(90deg);
}

.mobile-menu-close svg {
  width: 18px;
  height: 18px;
  stroke: rgba(255,255,255,0.7);
  stroke-width: 2;
  fill: none;
}

html:not(.dark) .mobile-menu {
  background: rgba(248,250,252,0.97);
  backdrop-filter: blur(24px);
}

html:not(.dark) .mobile-menu a {
  color: rgba(15,23,42,0.6);
}

html:not(.dark) .mobile-menu a:hover {
  color: #0099cc;
  background: rgba(0,207,255,0.06);
}

html:not(.dark) .mobile-menu-close svg {
  stroke: rgba(15,23,42,0.6);
}

/* mobile nav */
@media (max-width: 900px) {
  .navbar { padding: 0 16px; height: 64px; min-height: 64px; }
  .nav-links { display: none; }
  .nav-right { display: none; }
  .hamburger { display: flex; }
  .nav-inner { grid-template-columns: 1fr auto; }
  .mobile-menu { padding-top: max(96px, calc(64px + env(safe-area-inset-top))); }
}

/* Light theme disabled for now */
.theme-toggle { display: none !important; }