/* ssyuan — ink & champagne-gold, serif-led refined theme.
   Distinct from Luyin (dark teal), MiDa (light violet), RunYan (warm emerald),
   Joyyo (playful coral), Cojzq (navy + lime console). */

html {
  scroll-behavior: smooth;
}

body {
  overflow-x: hidden;
}

/* Scroll reveal */
.fade-up {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s ease-out, transform 0.7s ease-out;
}

.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Seal-style logo mark: gold-bordered square with serif letter */
.logo-seal {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.25rem;
  height: 2.25rem;
  border-radius: 0.5rem;
  border: 1px solid rgba(201, 169, 106, 0.65);
  background: linear-gradient(160deg, rgba(201, 169, 106, 0.16), rgba(201, 169, 106, 0.04));
  color: #E3C896;
  font-family: 'Fraunces', Georgia, serif;
  font-weight: 500;
  font-size: 1.2rem;
  line-height: 1;
  box-shadow: inset 0 0 12px rgba(201, 169, 106, 0.12);
}

/* Letter-spaced small-caps eyebrow */
.eyebrow {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: #C9A96A;
}

.eyebrow-dark {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: #B08D55;
}

/* Gold hairline rules */
.hairline-dark {
  height: 1px;
  background: linear-gradient(90deg, rgba(176, 141, 85, 0.7), rgba(176, 141, 85, 0.08));
}

/* Double-corner frame around imagery: thin outer border + offset inner corners */
.corner-frame {
  position: relative;
  border: 1px solid rgba(201, 169, 106, 0.35);
  border-radius: 1.25rem;
}

.corner-frame::before,
.corner-frame::after {
  content: '';
  position: absolute;
  width: 22px;
  height: 22px;
  border-color: #C9A96A;
  border-style: solid;
}

.corner-frame::before {
  top: -5px;
  left: -5px;
  border-width: 1px 0 0 1px;
}

.corner-frame::after {
  bottom: -5px;
  right: -5px;
  border-width: 0 1px 1px 0;
}

.corner-frame-dark {
  position: relative;
  border: 1px solid rgba(176, 141, 85, 0.45);
  border-radius: 1.25rem;
}

.corner-frame-dark::before,
.corner-frame-dark::after {
  content: '';
  position: absolute;
  width: 22px;
  height: 22px;
  border-color: #B08D55;
  border-style: solid;
}

.corner-frame-dark::before {
  top: -5px;
  left: -5px;
  border-width: 1px 0 0 1px;
}

.corner-frame-dark::after {
  bottom: -5px;
  right: -5px;
  border-width: 0 1px 1px 0;
}

/* Ambient gold glow field */
.glow {
  position: absolute;
  border-radius: 9999px;
  filter: blur(90px);
  pointer-events: none;
  z-index: 0;
}

.glow-gold {
  width: 34rem;
  height: 34rem;
  background: radial-gradient(circle, rgba(201, 169, 106, 0.13), transparent 70%);
  top: -12rem;
  right: -10rem;
}

/* Nav */
.nav-text {
  font-size: 0.82rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: rgba(245, 240, 228, 0.55);
  transition: color 0.2s;
}

.nav-text:hover {
  color: #E3C896;
}

#navbar {
  background: transparent;
}

#navbar.scrolled {
  background: rgba(20, 17, 9, 0.85);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.35);
  border-bottom: 1px solid rgba(201, 169, 106, 0.14);
}

/* Service cards & chips */
.service-card {
  transition: border-color 0.25s ease, transform 0.25s ease, background 0.25s ease;
}

.service-card:hover {
  border-color: rgba(201, 169, 106, 0.45);
  transform: translateY(-3px);
}

.svc-chip {
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: #E3C896;
  border: 1px solid rgba(201, 169, 106, 0.3);
  border-radius: 999px;
  padding: 0.3rem 0.85rem;
}

.flagship-badge {
  position: absolute;
  top: 2.1rem;
  right: 4.5rem;
  font-size: 0.62rem;
  font-weight: 600;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: #141109;
  background: #C9A96A;
  border-radius: 999px;
  padding: 0.28rem 0.8rem;
}

/* Case study labels */
.cs-label {
  font-size: 0.66rem;
  font-weight: 700;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: #B08D55;
}

/* Form fields */
.field {
  width: 100%;
  background: rgba(201, 169, 106, 0.04);
  border: 1px solid rgba(201, 169, 106, 0.18);
  border-radius: 0.75rem;
  padding: 0.9rem 1.25rem;
  color: #F5F0E4;
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.field::placeholder {
  color: rgba(245, 240, 228, 0.3);
}

.field:focus {
  border-color: transparent;
  box-shadow: 0 0 0 2px rgba(201, 169, 106, 0.5);
}

/* Footer column labels */
.footer-label {
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: rgba(201, 169, 106, 0.7);
}

/* Buttons */
.btn-primary {
  box-shadow: 0 8px 24px -6px rgba(201, 169, 106, 0.4);
}

.btn-outline {
  box-shadow: inset 0 0 24px rgba(201, 169, 106, 0.05);
}

@media (prefers-reduced-motion: reduce) {
  .fade-up { transition: none; opacity: 1; transform: none; }
  html { scroll-behavior: auto; }
}