/* ==========================================================================
   WEB PEARL — Components: nav, buttons, glass, preloader, cursor, footer
   ========================================================================== */

/* ---- Scroll progress ---- */
.progress-bar {
  position: fixed; top: 0; left: 0; z-index: 90;
  width: 100%; height: 2px;
  background: linear-gradient(90deg, var(--accent-strong), var(--accent));
  transform-origin: 0 50%;
  transform: scaleX(0);
  pointer-events: none;
}

/* ---- Navigation ---- */
.nav {
  position: fixed; inset: 0 0 auto 0; z-index: 80;
  padding-block: 1.1rem;
  transition: background var(--dur-fast) var(--ease-inout),
              padding var(--dur-fast) var(--ease-inout),
              border-color var(--dur-fast) var(--ease-inout);
  border-bottom: 1px solid transparent;
}
.nav.is-scrolled {
  background: var(--glass-bg);
  -webkit-backdrop-filter: blur(var(--glass-blur));
  backdrop-filter: blur(var(--glass-blur));
  border-bottom-color: var(--hairline);
  padding-block: 0.7rem;
}
.nav__inner {
  display: flex; align-items: center; justify-content: space-between;
  gap: var(--space-3);
}
.nav__brand { display: inline-flex; align-items: center; gap: 0.7rem; }
.nav__logo {
  width: 40px; height: 40px;
  mix-blend-mode: screen; /* black plate disappears on dark bg */
}
.nav__wordmark {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.95rem;
  letter-spacing: 0.34em;
  text-transform: uppercase;
}
.nav__links { display: flex; align-items: center; gap: 2.2rem; }
.nav__link {
  font-size: var(--text-small);
  font-weight: 400;
  color: var(--ink-muted);
  position: relative;
  transition: color var(--dur-fast) var(--ease-out);
}
.nav__link::after {
  content: '';
  position: absolute; left: 0; bottom: -6px;
  width: 100%; height: 1px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: 100% 50%;
  transition: transform var(--dur-fast) var(--ease-inout);
}
.nav__link:hover { color: var(--ink); }
.nav__link:hover::after { transform: scaleX(1); transform-origin: 0 50%; }

.nav__toggle { display: none; }

@media (max-width: 860px) {
  .nav__links {
    position: fixed; inset: 0;
    flex-direction: column; justify-content: center;
    gap: 2.6rem;
    background: rgba(6, 6, 6, 0.96);
    -webkit-backdrop-filter: blur(20px);
    backdrop-filter: blur(20px);
    opacity: 0; pointer-events: none;
    transition: opacity var(--dur-fast) var(--ease-inout);
  }
  .nav__links.is-open { opacity: 1; pointer-events: auto; }
  .nav__links .nav__link { font-size: 1.4rem; color: var(--ink); }
  .nav__toggle {
    display: grid; place-items: center;
    width: 44px; height: 44px;
    position: relative; z-index: 5;
  }
  .nav__toggle span,
  .nav__toggle span::before,
  .nav__toggle span::after {
    content: '';
    display: block; position: relative;
    width: 22px; height: 1.5px;
    background: var(--ink);
    transition: transform var(--dur-fast) var(--ease-inout), opacity var(--dur-fast);
  }
  .nav__toggle span::before { position: absolute; top: -7px; }
  .nav__toggle span::after  { position: absolute; top: 7px; }
  .nav__toggle.is-open span { background: transparent; }
  .nav__toggle.is-open span::before { transform: translateY(7px) rotate(45deg); }
  .nav__toggle.is-open span::after  { transform: translateY(-7px) rotate(-45deg); }
}

/* ---- Buttons ---- */
.btn {
  display: inline-flex; align-items: center; gap: 0.6rem;
  font-family: var(--font-display);
  font-size: var(--text-small);
  font-weight: 500;
  letter-spacing: 0.04em;
  padding: 0.95rem 1.9rem;
  border-radius: var(--radius-pill);
  position: relative;
  transition: transform var(--dur-fast) var(--ease-out),
              box-shadow var(--dur-fast) var(--ease-out),
              background-color var(--dur-fast) var(--ease-out),
              border-color var(--dur-fast) var(--ease-out),
              color var(--dur-fast) var(--ease-out);
  will-change: transform;
}
.btn--primary {
  background: var(--ink);
  color: var(--bg-0);
}
.btn--primary:hover {
  background: #ffffff;
  box-shadow: 0 0 0 1px rgba(111, 180, 255, 0.35),
              0 8px 40px -8px rgba(111, 180, 255, 0.45);
}
.btn--ghost {
  border: 1px solid var(--hairline-strong);
  color: var(--ink);
  background: rgba(242, 240, 234, 0.02);
}
.btn--ghost:hover {
  border-color: rgba(111, 180, 255, 0.5);
  background: rgba(111, 180, 255, 0.06);
}
.btn__arrow {
  transition: transform var(--dur-fast) var(--ease-out);
}
.btn:hover .btn__arrow { transform: translateX(4px); }

/* ---- Glass card (the one recipe) ---- */
.glass {
  background: var(--glass-bg);
  -webkit-backdrop-filter: blur(var(--glass-blur));
  backdrop-filter: blur(var(--glass-blur));
  border: 1px solid var(--glass-edge);
  border-radius: var(--radius-md);
  position: relative;
  overflow: hidden;
}
.glass::before {
  content: '';
  position: absolute; inset: 0;
  background: var(--glass-highlight);
  pointer-events: none;
}

/* ---- Preloader ---- */
.preloader {
  position: fixed; inset: 0; z-index: 200;
  display: grid; place-items: center;
  background: var(--bg-0);
  transition: opacity 0.6s var(--ease-inout), visibility 0.6s;
}
.preloader.is-done { opacity: 0; visibility: hidden; }
.preloader__mark { text-align: center; }
.preloader__pearl {
  width: 64px; height: 64px;
  margin-inline: auto;
  border-radius: 50%;
  position: relative;
  overflow: hidden;
}
.preloader__pearl img { width: 100%; height: 100%; }
.preloader__pearl::after {
  content: '';
  position: absolute; inset: -50%;
  background: linear-gradient(115deg, transparent 42%, rgba(255,255,255,0.5) 50%, transparent 58%);
  animation: shimmer 1.1s var(--ease-inout) infinite;
}
@keyframes shimmer {
  from { transform: translateX(-60%); }
  to   { transform: translateX(60%); }
}
.preloader__word {
  margin-top: 1.1rem;
  font-family: var(--font-display);
  font-size: var(--text-micro);
  font-weight: 500;
  letter-spacing: 0.5em;
  text-transform: uppercase;
  color: var(--ink-muted);
}

/* ---- Custom cursor (desktop, pointer:fine only — enabled by JS) ---- */
.cursor-dot, .cursor-ring {
  position: fixed; top: 0; left: 0; z-index: 300;
  pointer-events: none;
  border-radius: 50%;
  transform: translate(-50%, -50%);
  display: none;
}
html.has-cursor .cursor-dot,
html.has-cursor .cursor-ring { display: block; }
html.has-cursor { cursor: none; }
html.has-cursor a, html.has-cursor button { cursor: none; }
.cursor-dot {
  width: 6px; height: 6px;
  background: var(--ink);
}
.cursor-ring {
  width: 34px; height: 34px;
  border: 1px solid rgba(111, 180, 255, 0.5);
  box-shadow: 0 0 18px -4px rgba(111, 180, 255, 0.45);
  transition: width 0.25s var(--ease-out), height 0.25s var(--ease-out),
              border-color 0.25s var(--ease-out);
}
.cursor-ring.is-hover {
  width: 56px; height: 56px;
  border-color: rgba(111, 180, 255, 0.85);
}

/* ---- Footer (minimal, phase 1) ---- */
.footer {
  border-top: 1px solid var(--hairline);
  padding-block: var(--space-4);
}
.footer__inner {
  display: flex; flex-wrap: wrap; align-items: center;
  justify-content: space-between; gap: var(--space-3);
}
.footer__brand { display: inline-flex; align-items: center; gap: 0.7rem; }
.footer__brand img { width: 34px; height: 34px; mix-blend-mode: screen; }
.footer__note { font-size: var(--text-small); color: var(--ink-faint); }