/* ============================================================
   uScope — Main Stylesheet
   Site: uscope.co
   Version: 3.0
   Covers: tokens, reset, nav, menu, footer, shared utilities
   Page-specific styles are in their own files (home.css, no-results.css)
============================================================ */

/* ── Design Tokens ─────────────────────────────────────────── */
:root {
  --teal:      #12B8A0;
  --teal-dim:  #0EA08B;
  --teal-soft: #EAF7F5;
  --teal-mid:  #C8EDE9;
  --dark:      #141413;
  --dark-80:   rgba(20,20,19,0.80);
  --ink:       #1A1A1A;
  --ink-2:     #444444;
  --ink-3:     #888888;
  --ink-4:     #C4C4C4;
  --bg:        #FAFAF8;
  --surface:   #FFFFFF;
  --line:      #EBEBEA;
  --nav-h:     52px;
}

/* ── Reset ──────────────────────────────────────────────────── */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  scrollbar-gutter: stable;
}

body {
  font-family: 'DM Sans', sans-serif;
  background: var(--bg);
  color: var(--ink);
  overflow-x: hidden;
}

a    { color: inherit; text-decoration: none; }
ul   { list-style: none; }
img  { display: block; max-width: 100%; }
button { cursor: pointer; font-family: 'DM Sans', sans-serif; }

/* ── Navigation ─────────────────────────────────────────────── */
#nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  height: var(--nav-h);
  background: var(--dark-80);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(255,255,255,0.06);
  display: flex;
  align-items: center;
  padding: 0 24px;
  transition: background 0.3s ease;
}

#nav.scrolled {
  background: rgba(20,20,19,0.95);
}

/* Logo: centered by default, splits left on scroll */
.nav-logo-wrap {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  transition:
    left      0.52s cubic-bezier(0.34, 1.56, 0.64, 1),
    transform 0.52s cubic-bezier(0.34, 1.56, 0.64, 1);
  white-space: nowrap;
}

#nav.scrolled .nav-logo-wrap {
  left: max(16px, env(safe-area-inset-left, 16px));
  transform: translateX(0);
}

/* Full wordmark — fades + shrinks rightward as it splits off */
.logo-full {
  font-family: 'DM Serif Display', serif;
  font-size: 1.3rem;
  color: #fff;
  letter-spacing: -0.3px;
  opacity: 1;
  transform: translateX(0) scale(1);
  transform-origin: left center;
  transition:
    opacity   0.22s ease 0s,
    transform 0.38s cubic-bezier(0.4, 0, 0.2, 1) 0s;
  white-space: nowrap;
}

.logo-full i { color: var(--teal); font-style: italic; }

#nav.scrolled .logo-full {
  opacity: 0;
  transform: translateX(12px) scale(0.82);
  pointer-events: none;
  position: absolute;
}

/* uS icon mark — pops in from center with a spring bounce */
.logo-icon {
  display: flex;
  align-items: center;
  opacity: 0;
  transform: scale(0.55) rotate(-8deg);
  pointer-events: none;
  transition:
    opacity   0.18s ease 0.18s,
    transform 0.45s cubic-bezier(0.34, 1.72, 0.64, 1) 0.14s;
}

.logo-icon-box {
  width: 30px;
  height: 30px;
  border-radius: 7px;
  background: var(--teal);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 0 0 rgba(18,184,160,0);
  transition: box-shadow 0.35s ease 0.3s;
}

#nav.scrolled .logo-icon-box {
  box-shadow: 0 0 14px 2px rgba(18,184,160,0.35);
}

.logo-icon-text {
  display: flex;
  align-items: baseline;
  line-height: 1;
}

.logo-icon-u {
  font-family: 'DM Serif Display', serif;
  font-style: italic;
  font-size: 0.88rem;
  color: #fff;
}

.logo-icon-s {
  font-family: 'DM Serif Display', serif;
  font-weight: 700;
  font-size: 1.0rem;
  color: #fff;
  margin-left: -1px;
}

#nav.scrolled .logo-icon {
  opacity: 1;
  transform: scale(1) rotate(0deg);
  pointer-events: auto;
}

/* Hamburger */
.nav-right {
  margin-left: auto;
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.hamburger {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 8px;
  background: none;
  border: none;
}

.hamburger span {
  display: block;
  width: 22px;
  height: 1.5px;
  background: rgba(255,255,255,0.75);
  border-radius: 2px;
  transition: background 0.15s, transform 0.3s, opacity 0.3s;
}

.hamburger:hover span { background: #fff; }

.hamburger.open span:nth-child(1) { transform: translateY(3.75px)  rotate(45deg); }
.hamburger.open span:nth-child(2) { transform: translateY(-3.75px) rotate(-45deg); }

/* ── Menu Overlay ───────────────────────────────────────────── */
#menu {
  position: fixed;
  inset: 0;
  z-index: 999;
  background: rgba(20,20,19,0.98);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

#menu.open {
  opacity: 1;
  pointer-events: all;
}

.menu-link {
  font-family: 'DM Serif Display', serif;
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  color: rgba(255,255,255,0.55);
  font-style: italic;
  letter-spacing: -0.5px;
  transition: color 0.2s;
  padding: 6px 0;
}

.menu-link:hover { color: var(--teal); }

.menu-divider {
  width: 40px;
  height: 1px;
  background: rgba(255,255,255,0.1);
  margin: 16px 0;
}

.menu-actions {
  display: flex;
  gap: 12px;
  margin-top: 8px;
}

.menu-btn {
  padding: 10px 28px;
  border-radius: 100px;
  font-size: 0.85rem;
  font-weight: 500;
}

.menu-btn-outline {
  background: transparent;
  color: rgba(255,255,255,0.6);
  border: 1px solid rgba(255,255,255,0.2);
  transition: border-color 0.15s, color 0.15s;
}

.menu-btn-outline:hover { border-color: rgba(255,255,255,0.5); color: #fff; }

.menu-btn-solid {
  background: var(--teal);
  color: #fff;
  border: 1px solid transparent;
  transition: background 0.15s;
}

.menu-btn-solid:hover { background: var(--teal-dim); }

/* ── Footer ─────────────────────────────────────────────────── */
footer {
  background: var(--dark);
  border-top: 1px solid rgba(255,255,255,0.06);
  padding: 28px 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.footer-logo {
  font-family: 'DM Serif Display', serif;
  font-size: 1rem;
  color: rgba(255,255,255,0.6);
}

.footer-logo i { color: var(--teal); font-style: italic; }

.footer-links {
  display: flex;
  gap: 24px;
}

.footer-links a {
  font-size: 0.75rem;
  color: rgba(255,255,255,0.55);
  transition: color 0.15s;
}

.footer-links a:hover { color: rgba(255,255,255,0.85); }

.footer-copy {
  font-size: 0.72rem;
  color: rgba(255,255,255,0.18);
}

/* ── Shared Utilities ───────────────────────────────────────── */

/* Section eyebrow label */
.eyebrow {
  font-size: 0.68rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--teal);
  margin-bottom: 12px;
}

/* Scroll reveal */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.65s ease, transform 0.65s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-child {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

.reveal-child.visible        { opacity: 1; transform: translateY(0); }
.reveal-child:nth-child(2)   { transition-delay: 0.1s; }
.reveal-child:nth-child(3)   { transition-delay: 0.2s; }
.reveal-child:nth-child(4)   { transition-delay: 0.3s; }
.reveal-child:nth-child(5)   { transition-delay: 0.4s; }

/* Shared fade-up animation */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* Search loading glow — pulsing teal backlight on the bar border */
@keyframes searchGlow {
  0%   { box-shadow: 0 0 0 3px rgba(18,184,160,0.08), 0 0 12px rgba(18,184,160,0.15); border-color: rgba(18,184,160,0.4); }
  50%  { box-shadow: 0 0 0 5px rgba(18,184,160,0.18), 0 0 28px rgba(18,184,160,0.35); border-color: var(--teal); }
  100% { box-shadow: 0 0 0 3px rgba(18,184,160,0.08), 0 0 12px rgba(18,184,160,0.15); border-color: rgba(18,184,160,0.4); }
}

.search-bar.search-loading,
.inner-search-bar.search-loading,
.nav-search-scroll.search-loading {
  animation: searchGlow 1s ease-in-out infinite !important;
  border-color: var(--teal) !important;
  pointer-events: none;
}

.search-bar.search-loading *,
.inner-search-bar.search-loading *,
.nav-search-scroll.search-loading * {
  pointer-events: none;
}

/* ── Nav Scroll Search ("Scope" → search bar split animation) ── */
.nav-search-scroll {
  position: absolute;
  left: 50%;
  /* Start collapsed at the logo's left position, near zero width */
  transform: translateX(-50%) scaleX(0.08) translateY(0);
  transform-origin: left center;
  opacity: 0;
  pointer-events: none;
  width: clamp(220px, 52vw, 440px);
  display: flex;
  align-items: center;
  background: rgba(255,255,255,0.09);
  border: 1px solid rgba(255,255,255,0.14);
  border-radius: 99px;
  overflow: hidden;
  /* Spring expand: width shoots out from left, opacity punches in mid-way */
  transition:
    transform 0.52s cubic-bezier(0.34, 1.42, 0.64, 1) 0.08s,
    opacity   0.18s ease 0.22s;
}

#nav.scrolled .nav-search-scroll {
  transform: translateX(-50%) scaleX(1) translateY(0);
  opacity: 1;
  pointer-events: auto;
}

.nav-search-scroll input {
  flex: 1;
  background: none;
  border: none;
  outline: none;
  color: #fff;
  font-size: 13.5px;
  font-family: 'DM Sans', sans-serif;
  padding: 8px 4px 8px 18px;
  min-width: 0;
}

.nav-search-scroll input::placeholder { color: rgba(255,255,255,0.38); }

.nav-scroll-btn {
  background: none;
  border: none;
  padding: 7px 14px;
  display: flex;
  align-items: center;
  cursor: pointer;
}

.nav-scroll-btn svg {
  width: 16px;
  height: 16px;
  stroke: rgba(255,255,255,0.5);
}

.nav-scroll-btn:hover svg { stroke: rgba(255,255,255,0.85); }

/* ── Responsive ─────────────────────────────────────────────── */
@media (max-width: 540px) {
  footer {
    flex-direction: column;
    gap: 16px;
    text-align: center;
    padding: 28px 20px;
  }

  .footer-links {
    flex-wrap: wrap;
    justify-content: center;
  }
}