/* ============================================================
   X.Searcher — design system
   ============================================================ */
:root {
  --void: #02070d;
  --slate: #061019;
  --slate-2: #0a1724;
  --snow: #ffffff;
  --snow-80: rgba(255, 255, 255, 0.8);
  --snow-55: rgba(255, 255, 255, 0.55);
  --snow-45: rgba(255, 255, 255, 0.45);
  --snow-35: rgba(255, 255, 255, 0.35);
  --snow-25: rgba(255, 255, 255, 0.25);
  --line: #1b2c3d;
  --line-soft: rgba(86, 190, 255, 0.1);
  --line-strong: rgba(120, 205, 255, 0.22);
  --signal: #ffffff;
  --signal-contrast: #000000;
  --accent: #2eb8ff;
  --accent-soft: rgba(46, 184, 255, 0.12);
  --glow: rgba(0, 132, 255, 0.18);
  --danger: #ff6b6b;
  --success: #62d9a3;
  --warn: #f2b45c;
  --font-sans: "DM Sans", ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-display: "Syne", ui-sans-serif, system-ui, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  --nav-h: 49.5px;
  --radius: 0.75rem;
  --ease: cubic-bezier(0.2, 0.8, 0.2, 1);
  color-scheme: dark;
}

html[data-theme="blue"] {
  --void: #00060f;
  --slate: #031323;
  --slate-2: #051c30;
  --line: #123b57;
  --line-soft: rgba(0, 180, 255, 0.14);
  --line-strong: rgba(0, 190, 255, 0.28);
  --accent: #00b4ff;
  --accent-soft: rgba(0, 180, 255, 0.16);
  --glow: rgba(0, 170, 255, 0.2);
  --signal: #eaf9ff;
}

html[data-theme="violet"] {
  --void: #0b0614;
  --slate: #120b21;
  --slate-2: #170e29;
  --line: #302348;
  --line-soft: rgba(167, 139, 250, 0.14);
  --accent: #a78bfa;
  --accent-soft: rgba(167, 139, 250, 0.14);
  --glow: rgba(167, 139, 250, 0.16);
  --signal: #f5f0ff;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--void);
  color: var(--snow);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

img,
svg {
  display: block;
  max-width: 100%;
}

a {
  color: inherit;
  text-decoration: none;
}

button,
input,
textarea,
select {
  font: inherit;
  color: inherit;
}

button {
  cursor: pointer;
}

h1,
h2,
h3,
h4,
p,
ul,
ol,
figure {
  margin: 0;
}

ul,
ol {
  padding: 0;
  list-style: none;
}

::selection {
  background: var(--accent);
  color: var(--signal-contrast);
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

/* Scrollbar */
* {
  scrollbar-width: thin;
  scrollbar-color: #2a3f52 transparent;
}
*::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}
*::-webkit-scrollbar-thumb {
  background: #24384a;
  border-radius: 99px;
  border: 3px solid var(--void);
}

/* ============================================================
   Background
   ============================================================ */
.site-bg {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
  background:
    radial-gradient(ellipse 55% 62% at 28% 48%, var(--glow), transparent 72%),
    linear-gradient(180deg, color-mix(in srgb, var(--void) 94%, #0a1d2e), var(--void));
}

.site-bg-glow {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 36% 52% at 35% 44%, rgba(80, 180, 255, 0.09), transparent 72%),
    linear-gradient(90deg, transparent 56%, rgba(0, 0, 0, 0.7));
}

#waveCanvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0.88;
  -webkit-mask-image: linear-gradient(#0000 0%, #000 5% 91%, #0000 100%);
  mask-image: linear-gradient(#0000 0%, #000 5% 91%, #0000 100%);
}

html[data-backdrop="static"] #waveCanvas {
  display: none;
}

html[data-backdrop="static"] .site-bg {
  background:
    radial-gradient(ellipse 60% 50% at 30% 30%, var(--glow), transparent 70%),
    radial-gradient(ellipse 40% 40% at 80% 70%, rgba(70, 170, 255, 0.06), transparent 70%),
    var(--void);
}

.cursor-glow {
  position: fixed;
  top: 0;
  left: 0;
  width: 640px;
  height: 640px;
  margin: -320px 0 0 -320px;
  z-index: 1;
  pointer-events: none;
  border-radius: 50%;
  background: radial-gradient(circle, var(--glow), transparent 62%);
  opacity: 0;
  transition: opacity 0.4s;
  will-change: transform;
}

body.pointer-fine .cursor-glow {
  opacity: 1;
}

/* ============================================================
   Layout helpers
   ============================================================ */
.page {
  position: relative;
  z-index: 2;
  display: flex;
  min-height: 100vh;
  flex-direction: column;
}

.main {
  flex: 1;
}

.container {
  width: 100%;
  max-width: 72rem;
  margin-inline: auto;
  padding-inline: 3rem;
}

.mono {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.kicker {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--snow-55);
}

.lead {
  max-width: 34rem;
  margin-top: 0.9rem;
  font-size: 15px;
  line-height: 1.6;
  color: var(--snow-55);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ============================================================
   Buttons
   ============================================================ */
.btn {
  --btn-h: 3.25rem;
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  height: var(--btn-h);
  padding: 0 1.5rem;
  border: 1px solid transparent;
  border-radius: 999px;
  background: transparent;
  color: var(--snow);
  font-family: var(--font-sans);
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  white-space: nowrap;
  transition:
    transform 0.2s var(--ease),
    background-color 0.2s,
    border-color 0.2s,
    color 0.2s,
    box-shadow 0.25s,
    filter 0.2s;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn:active {
  transform: translateY(0) scale(0.985);
}

.btn svg {
  width: 1rem;
  height: 1rem;
  flex: none;
}

.btn--primary {
  background: linear-gradient(180deg, color-mix(in srgb, var(--accent) 82%, #ffffff), var(--accent));
  color: #03121e;
  box-shadow:
    0 1px 0 rgba(255, 255, 255, 0.45) inset,
    0 10px 30px rgba(0, 0, 0, 0.55),
    0 8px 26px color-mix(in srgb, var(--accent) 22%, transparent);
}

.btn--primary:hover {
  filter: brightness(1.08);
  box-shadow:
    0 1px 0 rgba(255, 255, 255, 0.55) inset,
    0 12px 34px rgba(0, 0, 0, 0.6),
    0 10px 32px color-mix(in srgb, var(--accent) 32%, transparent);
}

.btn--ghost {
  border-color: var(--line);
  background: rgba(0, 0, 0, 0.28);
  color: var(--snow);
}

.btn--ghost:hover {
  border-color: var(--line-strong);
  background: rgba(255, 255, 255, 0.045);
}

.btn--quiet {
  height: auto;
  padding: 0.35rem 0.2rem;
  border: 0;
  color: var(--snow-55);
  font-weight: 500;
}

.btn--quiet:hover {
  color: var(--snow);
  transform: none;
}

.btn--sm {
  --btn-h: 2.4rem;
  padding: 0 1rem;
  font-size: 0.8125rem;
}

.btn--block {
  width: 100%;
}

.btn[disabled] {
  opacity: 0.55;
  pointer-events: none;
}

.btn__arrow {
  transition: transform 0.2s var(--ease);
}

.btn:hover .btn__arrow {
  transform: translateX(3px);
}

/* ============================================================
   Floating nav
   ============================================================ */
.nav-wrap {
  position: sticky;
  top: 0;
  z-index: 50;
  padding: 1rem 1.5rem 0;
  pointer-events: none;
}

.nav {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  width: 100%;
  max-width: 56rem;
  min-height: 3.15rem;
  margin-inline: auto;
  padding: 0.3125rem 0.375rem 0.3125rem 0.875rem;
  border: 1px solid rgba(120, 205, 255, 0.1);
  border-radius: 999px;
  background: rgba(4, 12, 20, 0.66);
  box-shadow:
    inset 0 0 0 1px rgba(255, 255, 255, 0.035),
    inset 0 1px 0 rgba(255, 255, 255, 0.05),
    0 8px 32px rgba(0, 0, 0, 0.4);
  -webkit-backdrop-filter: blur(28px) saturate(1.15);
  backdrop-filter: blur(28px) saturate(1.15);
  pointer-events: auto;
  transition: background-color 0.3s, border-color 0.3s, box-shadow 0.3s;
}

html[data-glass="on"] .nav {
  background: rgba(255, 255, 255, 0.035);
  border-color: rgba(255, 255, 255, 0.16);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.25),
    0 10px 40px rgba(0, 0, 0, 0.5);
}

.nav-wrap.is-scrolled .nav {
  background: rgba(5, 5, 5, 0.86);
  border-color: rgba(255, 255, 255, 0.1);
}

.nav-brand {
  display: flex;
  min-width: 0;
  flex-shrink: 0;
  align-items: center;
  gap: 0.625rem;
  padding-right: 0.125rem;
  transition: opacity 0.2s;
}

.nav-brand:hover {
  opacity: 0.9;
}

.nav-logo {
  width: 3rem;
  height: 1.75rem;
  flex: none;
  object-fit: contain;
  border: 0;
  border-radius: 0;
  box-shadow: none;
}

.nav-name {
  font-family: var(--font-display);
  font-size: 0.8125rem;
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.02em;
  white-space: nowrap;
}

.nav-divider {
  width: 1px;
  height: 1.125rem;
  margin-inline: 0.625rem;
  flex: none;
  background: rgba(255, 255, 255, 0.07);
}

.nav-center {
  display: flex;
  flex: 1;
  min-width: 0;
  align-items: center;
  justify-content: center;
  gap: 0.125rem;
  max-width: 100%;
  padding: 0.125rem;
  border: 1px solid rgba(120, 205, 255, 0.07);
  border-radius: 999px;
  background: rgba(120, 205, 255, 0.028);
  overflow-x: auto;
  scrollbar-width: none;
}

.nav-center::-webkit-scrollbar {
  display: none;
}

.nav-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.375rem 0.9375rem;
  border-radius: 999px;
  color: rgba(255, 255, 255, 0.45);
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: -0.01em;
  white-space: nowrap;
  transition: color 0.2s;
}

.nav-link:hover {
  color: rgba(255, 255, 255, 0.82);
}

.nav-link.is-active {
  color: var(--snow);
}

.nav-indicator {
  position: absolute;
  inset: 0;
  border-radius: 999px;
  background: color-mix(in srgb, var(--accent) 15%, transparent);
  box-shadow:
    0 1px 2px rgba(0, 0, 0, 0.25),
    inset 0 0 0 1px color-mix(in srgb, var(--accent) 26%, transparent);
  opacity: 0;
  transition: opacity 0.2s;
}

.nav-link.is-active .nav-indicator {
  opacity: 1;
}

.nav-link-label {
  position: relative;
  z-index: 1;
}

.nav-right {
  display: flex;
  flex-shrink: 0;
  align-items: center;
  gap: 0.375rem;
  margin-left: auto;
  padding-right: 0.125rem;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.nav-action {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  min-height: 2.15rem;
  padding: 0.4rem 0.8rem;
  border: 1px solid var(--line);
  border-radius: 0.5rem;
  background: rgba(0, 0, 0, 0.45);
  color: rgba(255, 255, 255, 0.55);
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: -0.01em;
  transition: color 0.2s, border-color 0.2s, background-color 0.2s;
}

.nav-action:hover {
  color: var(--snow);
  border-color: var(--line-strong);
  background: rgba(255, 255, 255, 0.04);
}

.nav-action svg {
  display: none;
  width: 0.875rem;
  height: 0.875rem;
}

.nav-action--accent {
  color: var(--snow);
}

.nav-menu-btn {
  display: none;
  align-items: center;
  justify-content: center;
  width: 2.25rem;
  height: 2.25rem;
  border: 1px solid var(--line);
  border-radius: 0.55rem;
  background: rgba(255, 255, 255, 0.04);
  color: var(--snow-55);
}

.nav-menu-btn:hover {
  color: var(--snow);
}

.nav-mobile {
  display: none;
  max-width: 56rem;
  margin: 0.5rem auto 0;
  padding: 0.5rem;
  border: 1px solid var(--line-soft);
  border-radius: 1rem;
  background: rgba(6, 6, 6, 0.94);
  box-shadow: 0 18px 50px rgba(0, 0, 0, 0.6);
  -webkit-backdrop-filter: blur(24px);
  backdrop-filter: blur(24px);
  pointer-events: auto;
}

.nav-mobile.is-open {
  display: block;
  animation: navDrop 0.22s var(--ease);
}

@keyframes navDrop {
  from {
    opacity: 0;
    transform: translateY(-6px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

.nav-mobile a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.7rem 0.8rem;
  border-radius: 0.55rem;
  color: var(--snow-55);
  font-size: 0.875rem;
}

.nav-mobile a:hover,
.nav-mobile a.is-active {
  background: rgba(255, 255, 255, 0.05);
  color: var(--snow);
}

.nav-mobile .nav-mobile-sep {
  display: block;
  height: 1px;
  margin: 0.4rem 0.3rem;
  background: var(--line-soft);
}

/* ============================================================
   Footer
   ============================================================ */
.footer {
  margin-top: 4rem;
  border-top: 1px solid var(--line);
  background: color-mix(in srgb, var(--slate) 72%, transparent);
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.85rem 1.5rem;
  width: 100%;
  max-width: 72rem;
  margin-inline: auto;
  padding: 1.05rem 3rem 1.15rem;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.footer-logo {
  width: 3rem;
  height: 1.75rem;
  object-fit: contain;
  border: 0;
  border-radius: 0;
}

.footer-title {
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0;
  line-height: 1.2;
}

.footer-sub {
  margin-top: 0.15rem;
  color: var(--snow-35);
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.15rem 1.15rem;
}

.footer-links a {
  color: var(--snow-55);
  font-size: 13px;
  line-height: 1.4;
  transition: color 0.15s;
}

.footer-links a:hover {
  color: var(--snow);
}

.footer-copy {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 0.75rem;
  color: var(--snow-35);
  font-size: 12px;
}

.footer-copy span:last-child {
  color: var(--snow-25);
}

/* ============================================================
   Reveal
   ============================================================ */
.reveal {
  animation: revealUp 0.8s var(--ease) both;
  animation-delay: var(--d, 0ms);
}

.reveal.is-in {
  opacity: 1;
  transform: none;
}

@keyframes revealUp {
  from {
    opacity: 0;
    transform: translateY(16px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  .reveal {
    animation: none;
  }
  .btn:hover {
    transform: none;
  }
}

/* ============================================================
   Toasts
   ============================================================ */
.toast-wrap {
  position: fixed;
  right: 1rem;
  bottom: 1rem;
  z-index: 200;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  max-width: min(92vw, 22rem);
}

.toast {
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
  padding: 0.75rem 0.9rem;
  border: 1px solid var(--line-strong);
  border-radius: 0.65rem;
  background: rgba(12, 12, 12, 0.96);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.55);
  color: var(--snow-80);
  font-size: 13px;
  line-height: 1.45;
  animation: toastIn 0.25s var(--ease);
  -webkit-backdrop-filter: blur(16px);
  backdrop-filter: blur(16px);
}

.toast.is-out {
  animation: toastOut 0.2s ease forwards;
}

.toast svg {
  width: 1rem;
  height: 1rem;
  flex: none;
  margin-top: 0.1rem;
  color: var(--accent);
}

@keyframes toastIn {
  from {
    opacity: 0;
    transform: translateY(10px) scale(0.98);
  }
}

@keyframes toastOut {
  to {
    opacity: 0;
    transform: translateY(6px);
  }
}

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width: 1100px) {
  .container {
    padding-inline: 2rem;
  }
  .footer-inner {
    padding-inline: 2rem;
  }
}

@media (max-width: 860px) {
  .nav-center,
  .nav-divider {
    display: none;
  }
  .nav-menu-btn {
    display: inline-flex;
  }
  .nav-action {
    padding-inline: 0.7rem;
  }
  .nav {
    padding-left: 0.75rem;
  }
  .nav-wrap {
    padding: 1rem 1rem 0;
  }
  .nav-actions {
    gap: 0.2rem;
  }
}

@media (max-width: 640px) {
  .container {
    padding-inline: 1.25rem;
  }
  .nav-actions {
    display: none;
  }
  .footer {
    margin-top: 2rem;
  }
  .footer-inner {
    padding-inline: 1.25rem;
    justify-content: center;
    text-align: center;
  }
  .footer-links {
    justify-content: center;
  }
  .footer-copy {
    justify-content: center;
  }
  .nav-action--login {
    display: none;
  }
}