/* ==========================================================================
   REVIFY — components.css
   Nav, footer, buttons, cards, forms
   ========================================================================== */

/* --------------------------------------------------------------------------
   Nav
   -------------------------------------------------------------------------- */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  backdrop-filter: blur(20px) saturate(140%);
  -webkit-backdrop-filter: blur(20px) saturate(140%);
  background: rgba(10, 10, 10, 0.68);
  border-bottom: 1px solid transparent;
  transition: border-color 360ms var(--ease), background 360ms var(--ease);
}

.nav.is-scrolled {
  border-bottom-color: var(--line);
  background: rgba(10, 10, 10, 0.88);
}

.nav__inner {
  width: 100%;
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 var(--gutter);
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 2.5rem;
}

.nav__brand {
  display: inline-flex;
  align-items: baseline;
  gap: 0.55rem;
  font-family: var(--font-display);
  font-style: italic;
  font-weight: 300;
  font-size: 1.5rem;
  letter-spacing: -0.02em;
  color: var(--text);
  font-variation-settings: "SOFT" 100, "opsz" 144, "wght" 300;
}

.nav__brand span {
  width: 4px; height: 4px;
  background: var(--gold);
  border-radius: 50%;
  transform: translateY(-2px);
}

.nav__links {
  display: flex;
  justify-content: center;
  gap: 2.5rem;
  list-style: none;
  margin: 0; padding: 0;
  font-size: 0.875rem;
  color: var(--text-mute);
  letter-spacing: -0.005em;
}

.nav__links a {
  position: relative;
  padding: 0.5rem 0;
  transition: color 240ms var(--ease);
}

.nav__links a::after {
  content: "";
  position: absolute;
  left: 0; right: 0;
  bottom: 0;
  height: 1px;
  background: var(--gold);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 360ms var(--ease);
}

.nav__links a:hover,
.nav__links a[aria-current="page"] {
  color: var(--text);
}

.nav__links a:hover::after,
.nav__links a[aria-current="page"]::after {
  transform: scaleX(1);
  transform-origin: left;
}

.nav__cta {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.65rem 1.1rem;
  border: 1px solid var(--line-gold);
  border-radius: var(--r-sm);
  font-size: 0.825rem;
  color: var(--text);
  transition: all 300ms var(--ease);
  white-space: nowrap;
}

.nav__cta:hover {
  border-color: var(--gold);
  background: var(--gold-faint);
}

.nav__cta::after {
  content: "→";
  transition: transform 280ms var(--ease);
}

.nav__cta:hover::after { transform: translateX(3px); }

.nav__burger {
  display: none;
  width: 2.25rem; height: 2.25rem;
  position: relative;
}

.nav__burger span {
  position: absolute;
  left: 0.45rem; right: 0.45rem;
  height: 1px;
  background: var(--text);
  transition: transform 300ms var(--ease), opacity 240ms var(--ease);
}

.nav__burger span:nth-child(1) { top: 0.85rem; }
.nav__burger span:nth-child(2) { bottom: 0.85rem; }

.nav.is-open .nav__burger span:nth-child(1) {
  top: 50%; transform: translateY(-50%) rotate(45deg);
}
.nav.is-open .nav__burger span:nth-child(2) {
  bottom: 50%; transform: translateY(50%) rotate(-45deg);
}

@media (max-width: 820px) {
  .nav__links,
  .nav__cta {
    display: none;
  }
  .nav__burger { display: block; }
  .nav__inner { grid-template-columns: auto 1fr auto; }

  .nav__mobile {
    position: fixed;
    top: var(--nav-h); left: 0; right: 0; bottom: 0;
    background: var(--bg);
    padding: 3rem var(--gutter);
    transform: translateY(-110%);
    transition: transform 480ms var(--ease);
    border-top: 1px solid var(--line);
    overflow-y: auto;
  }

  .nav.is-open .nav__mobile { transform: translateY(0); }

  .nav__mobile ul {
    list-style: none;
    padding: 0; margin: 0 0 3rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
  }

  .nav__mobile ul a {
    display: block;
    padding: 1.1rem 0;
    border-bottom: 1px solid var(--line);
    font-family: var(--font-display);
    font-weight: 300;
    font-size: 2rem;
    font-style: italic;
    font-variation-settings: "SOFT" 100, "opsz" 144, "wght" 300;
  }

  .nav__mobile ul a[aria-current="page"] { color: var(--gold); }

  .nav__mobile-cta {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    padding: 1rem 1.5rem;
    border: 1px solid var(--line-gold);
    border-radius: var(--r-sm);
  }
}

@media (min-width: 821px) {
  .nav__mobile { display: none; }
}

/* body padding for fixed nav */
body { padding-top: var(--nav-h); }

/* --------------------------------------------------------------------------
   Buttons
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  padding: 1rem 1.6rem;
  border: 1px solid var(--line-gold);
  border-radius: var(--r-sm);
  font-size: 0.9rem;
  letter-spacing: -0.005em;
  color: var(--text);
  transition: all 340ms var(--ease);
  cursor: pointer;
  white-space: nowrap;
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at var(--mx, 50%) var(--my, 50%), var(--gold-faint) 0%, transparent 60%);
  opacity: 0;
  transition: opacity 340ms var(--ease);
  pointer-events: none;
}

.btn:hover::before { opacity: 1; }
.btn:hover { border-color: var(--gold); }

.btn__arrow {
  transition: transform 320ms var(--ease);
}

.btn:hover .btn__arrow { transform: translateX(4px); }

.btn--primary {
  background: var(--gold);
  color: #0A0A0A;
  border-color: var(--gold);
  font-weight: 500;
}

.btn--primary:hover {
  background: var(--gold-soft);
  border-color: var(--gold-soft);
}

.btn--ghost {
  border-color: var(--line);
  background: transparent;
}

.btn--ghost:hover {
  border-color: var(--line-strong);
  background: rgba(255, 255, 255, 0.02);
}

.btn--sm {
  padding: 0.7rem 1.1rem;
  font-size: 0.825rem;
}

/* link with arrow */
.arrow-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--gold);
  letter-spacing: 0;
  border-bottom: 1px solid transparent;
  padding-bottom: 2px;
  transition: border-color 280ms var(--ease);
}

.arrow-link::after {
  content: "→";
  transition: transform 280ms var(--ease);
}

.arrow-link:hover {
  border-bottom-color: var(--gold);
}

.arrow-link:hover::after {
  transform: translateX(4px);
}

/* --------------------------------------------------------------------------
   Cards
   -------------------------------------------------------------------------- */
.card {
  position: relative;
  padding: clamp(1.5rem, 2.5vw, 2.25rem);
  background: var(--bg-raised);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  overflow: hidden;
  transition: border-color 320ms var(--ease), transform 420ms var(--ease);
}

.card:hover {
  border-color: var(--line-strong);
}

.card--accent::before {
  content: "";
  position: absolute;
  top: 0; left: 0;
  width: 2.5rem; height: 1px;
  background: var(--gold);
  transition: width 400ms var(--ease);
}

.card--accent:hover::before { width: 5rem; }

.card__num {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  color: var(--gold);
  margin-bottom: 1.5rem;
  display: block;
}

.card__title {
  font-family: var(--font-display);
  font-weight: 300;
  font-size: 1.5rem;
  letter-spacing: -0.02em;
  margin-bottom: 0.875rem;
  line-height: 1.15;
  font-variation-settings: "SOFT" 100, "opsz" 144, "wght" 300;
}

.card__title em { color: var(--gold); }

.card__body {
  color: var(--text-mute);
  font-size: 0.95rem;
  line-height: 1.55;
}

/* --------------------------------------------------------------------------
   Form
   -------------------------------------------------------------------------- */
.form {
  display: grid;
  gap: 1.75rem;
}

.form__field {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  position: relative;
}

.form__label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-label);
}

.form__input,
.form__textarea,
.form__select {
  background: transparent;
  border: 0;
  border-bottom: 1px solid var(--line);
  padding: 0.75rem 0;
  font-size: 1rem;
  color: var(--text);
  transition: border-color 300ms var(--ease);
  outline: none;
  width: 100%;
  font-family: var(--font-body);
  letter-spacing: -0.005em;
}

.form__textarea {
  resize: vertical;
  min-height: 6.5rem;
  line-height: 1.55;
}

.form__input:focus,
.form__textarea:focus,
.form__select:focus {
  border-bottom-color: var(--gold);
}

.form__input::placeholder,
.form__textarea::placeholder {
  color: var(--text-faint);
}

.form__select {
  appearance: none;
  -webkit-appearance: none;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'><path d='M1 1l5 5 5-5' stroke='%238B8B8B' fill='none' stroke-width='1.25'/></svg>");
  background-repeat: no-repeat;
  background-position: right 0.5rem center;
  padding-right: 2rem;
  cursor: pointer;
}

.form__select option {
  background: var(--bg-raised);
  color: var(--text);
}

.form__error {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  color: #d87a7a;
  min-height: 1em;
}

.form__success {
  padding: 1.5rem;
  border: 1px solid var(--line-gold);
  background: var(--gold-faint);
  border-radius: var(--r-sm);
  color: var(--text);
}

/* --------------------------------------------------------------------------
   Footer
   -------------------------------------------------------------------------- */
.footer {
  position: relative;
  padding: clamp(4rem, 7vw, 6rem) 0 2.5rem;
  border-top: 1px solid var(--line);
  overflow: hidden;
}

.footer__grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr 1fr 1fr;
  gap: clamp(2rem, 4vw, 4rem);
  margin-bottom: clamp(3rem, 5vw, 5rem);
}

.footer__brand {
  font-family: var(--font-display);
  font-style: italic;
  font-weight: 300;
  font-size: clamp(2.5rem, 5vw, 4rem);
  letter-spacing: -0.03em;
  line-height: 0.95;
  margin-bottom: 1.25rem;
  font-variation-settings: "SOFT" 100, "opsz" 144, "wght" 300;
}

.footer__brand span { color: var(--gold); }

.footer__tag {
  color: var(--text-mute);
  font-size: 0.95rem;
  max-width: 24rem;
}

.footer__col h5 {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-label);
  margin: 0 0 1.25rem;
  font-weight: 400;
}

.footer__col ul {
  list-style: none;
  margin: 0; padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  font-size: 0.9rem;
}

.footer__col a {
  color: var(--text-mute);
  transition: color 240ms var(--ease);
}

.footer__col a:hover { color: var(--text); }

.footer__bottom {
  padding-top: 2rem;
  border-top: 1px solid var(--line);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  font-size: 0.8125rem;
  color: var(--text-faint);
}

.footer__legal {
  display: flex;
  gap: 1.5rem;
}

.footer__legal a { color: var(--text-faint); transition: color 240ms var(--ease); }
.footer__legal a:hover { color: var(--text-mute); }

@media (max-width: 820px) {
  .footer__grid {
    grid-template-columns: 1fr 1fr;
  }
  .footer__brand-col {
    grid-column: 1 / -1;
  }
}

/* --------------------------------------------------------------------------
   Reveal (for scroll animations)
   -------------------------------------------------------------------------- */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 900ms var(--ease), transform 900ms var(--ease);
  will-change: opacity, transform;
}

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

.reveal-child > * {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 800ms var(--ease), transform 800ms var(--ease);
}

.reveal-child.is-in > * { opacity: 1; transform: none; }
.reveal-child.is-in > *:nth-child(1) { transition-delay: 0ms; }
.reveal-child.is-in > *:nth-child(2) { transition-delay: 80ms; }
.reveal-child.is-in > *:nth-child(3) { transition-delay: 160ms; }
.reveal-child.is-in > *:nth-child(4) { transition-delay: 240ms; }
.reveal-child.is-in > *:nth-child(5) { transition-delay: 320ms; }
.reveal-child.is-in > *:nth-child(6) { transition-delay: 400ms; }
.reveal-child.is-in > *:nth-child(7) { transition-delay: 480ms; }
.reveal-child.is-in > *:nth-child(8) { transition-delay: 560ms; }