/* ============================================================
   Premium Effects — violin-hime
   ============================================================ */

/* ── Custom Cursor ── */
body.has-custom-cursor { cursor: none !important; }
body.has-custom-cursor * { cursor: none !important; }

.cursor-dot {
  position: fixed;
  width: 7px; height: 7px;
  background: var(--gold);
  border-radius: 50%;
  pointer-events: none;
  z-index: 2147483647; /* 最大値 — 常に最前面 */
  left: 0; top: 0;
  transform: translate(-50%, -50%);
  transition: transform 0.08s ease, background 0.2s;
  box-shadow: 0 0 6px rgba(201,162,39,0.8);
}
.cursor-ring {
  position: fixed;
  width: 30px; height: 30px;
  border: 1.5px solid rgba(201,162,39,0.55);
  border-radius: 50%;
  pointer-events: none;
  z-index: 2147483646;
  left: 0; top: 0;
  transform: translate(-50%, -50%);
  transition: width 0.2s ease, height 0.2s ease, border-color 0.2s ease;
}
body.has-custom-cursor .cursor-ring.on-interactive {
  width: 46px; height: 46px;
  border-color: rgba(201,162,39,0.85);
}
.cursor-trail {
  position: fixed;
  border-radius: 50%;
  pointer-events: none;
  z-index: 2147483645;
  transform: translate(-50%, -50%);
  animation: trail-fade 0.55s ease forwards;
}
@keyframes trail-fade {
  0%   { opacity: 0.6; transform: translate(-50%, -50%) scale(1); }
  100% { opacity: 0;   transform: translate(-50%, -50%) scale(0.1); }
}

/* ── Button Shimmer (::after) ── */
.btn {
  isolation: isolate;
}
.btn::after {
  content: '';
  position: absolute;
  top: 0; left: -110%;
  width: 55%; height: 100%;
  background: linear-gradient(
    100deg,
    transparent 0%,
    rgba(255,255,255,0.42) 50%,
    transparent 100%
  );
  transform: skewX(-22deg);
  pointer-events: none;
  animation: btn-shimmer 3.5s ease-in-out infinite;
  z-index: 2;
}
.btn:hover::after { animation-play-state: paused; }

@keyframes btn-shimmer {
  0%   { left: -110%; }
  28%  { left: 120%; }
  100% { left: 120%; }
}

.btn:hover {
  transform: translateY(-3px) scale(1.035) !important;
  box-shadow: 0 8px 28px rgba(201,162,39,0.45), 0 0 50px rgba(201,162,39,0.15) !important;
}
.btn:active {
  transform: translateY(0) scale(0.97) !important;
}

/* ── Ripple ── */
.fx-ripple {
  position: absolute;
  border-radius: 50%;
  background: rgba(201,162,39,0.35);
  transform: scale(0);
  animation: ripple-expand 0.65s cubic-bezier(0.2, 0.8, 0.4, 1) forwards;
  pointer-events: none;
}
@keyframes ripple-expand {
  to { transform: scale(4.5); opacity: 0; }
}

/* ── Card 3D Tilt ── */
.card {
  transform-style: preserve-3d;
  will-change: transform;
}
.card-gloss {
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: radial-gradient(
    circle at var(--gx, 50%) var(--gy, 50%),
    rgba(255,255,255,0.18) 0%,
    transparent 55%
  );
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.3s ease;
  z-index: 1;
}
.card:hover .card-gloss { opacity: 1; }

/* ── Aurora Blobs ── */
.aurora-layer {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  overflow: hidden;
}
.aurora-blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(90px);
  opacity: 0.14;
  will-change: transform;
}
.aurora-blob:nth-child(1) {
  width: 700px; height: 700px;
  background: radial-gradient(circle, #f48fb1 0%, transparent 70%);
  top: -15%; left: -18%;
  animation: aurora-drift1 28s ease-in-out infinite;
}
.aurora-blob:nth-child(2) {
  width: 550px; height: 550px;
  background: radial-gradient(circle, #c9a227 0%, transparent 70%);
  top: 35%; right: -18%;
  animation: aurora-drift2 34s ease-in-out infinite;
  opacity: 0.10;
}
.aurora-blob:nth-child(3) {
  width: 480px; height: 480px;
  background: radial-gradient(circle, #e8d5f5 0%, transparent 70%);
  bottom: -12%; left: 28%;
  animation: aurora-drift3 22s ease-in-out infinite;
  opacity: 0.16;
}
@keyframes aurora-drift1 {
  0%   { transform: translate(0, 0) scale(1); }
  33%  { transform: translate(50px, 35px) scale(1.06); }
  66%  { transform: translate(-20px, 60px) scale(0.94); }
  100% { transform: translate(0, 0) scale(1); }
}
@keyframes aurora-drift2 {
  0%   { transform: translate(0, 0) scale(1); }
  40%  { transform: translate(-60px, 40px) scale(1.08); }
  75%  { transform: translate(30px, -30px) scale(0.96); }
  100% { transform: translate(0, 0) scale(1); }
}
@keyframes aurora-drift3 {
  0%   { transform: translate(0, 0) scale(1); }
  50%  { transform: translate(40px, -50px) scale(1.05); }
  100% { transform: translate(0, 0) scale(1); }
}

/* ── Page Load Overlay ── */
#fx-load-overlay {
  position: fixed;
  inset: 0;
  background: linear-gradient(150deg, #fce4ec 0%, #fffdf7 50%, #f3e5f5 100%);
  z-index: 200000;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 1.2rem;
  transition: opacity 0.7s ease, visibility 0.7s ease;
}
#fx-load-overlay.fx-hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}
.fx-load-title {
  font-family: var(--font-title);
  font-size: clamp(1.1rem, 3vw, 1.5rem);
  color: var(--gold);
  letter-spacing: 0.12em;
  text-align: center;
  animation: load-glow 1s ease-in-out infinite alternate;
}
.fx-load-note {
  font-size: 2rem;
  animation: load-spin 1.5s linear infinite;
  display: inline-block;
}
.fx-load-bar {
  width: 180px; height: 2px;
  background: rgba(201,162,39,0.2);
  border-radius: 2px;
  overflow: hidden;
}
.fx-load-bar-fill {
  height: 100%;
  background: var(--gradient-gold);
  background-size: 200% auto;
  animation: load-fill 1.0s cubic-bezier(0.4,0,0.2,1) forwards,
             gradient-shift 2s linear infinite;
}
@keyframes load-fill {
  0%   { width: 0%; }
  100% { width: 100%; }
}
@keyframes load-glow {
  0%   { text-shadow: 0 0 15px rgba(201,162,39,0.3); opacity: 0.75; }
  100% { text-shadow: 0 0 35px rgba(201,162,39,0.75); opacity: 1; }
}
@keyframes load-spin {
  0%   { transform: rotate(0deg) scale(1); }
  50%  { transform: rotate(180deg) scale(1.2); }
  100% { transform: rotate(360deg) scale(1); }
}

/* ── Gradient Text Animation ── */
.section-title,
.page-hero h1 {
  background: linear-gradient(
    135deg,
    var(--gold-dark) 0%,
    var(--gold) 25%,
    var(--gold-light) 50%,
    var(--gold) 75%,
    var(--gold-dark) 100%
  );
  background-size: 250% auto;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: gradient-shift 5s linear infinite;
}
@keyframes gradient-shift {
  0%   { background-position: 0% center; }
  100% { background-position: 250% center; }
}

/* ── Hero Entrance ── */
@keyframes hero-enter {
  0% {
    opacity: 0;
    transform: scale(0.82) translateY(24px);
    filter: blur(12px) brightness(1.5);
  }
  100% {
    opacity: 1;
    transform: scale(1) translateY(0);
    filter: blur(0) brightness(1);
  }
}
.hero-title-logo {
  animation: hero-enter 1.6s cubic-bezier(0.16, 1, 0.3, 1) both;
  animation-delay: 0.2s;
}
.hero-buttons {
  animation: hero-enter 1.3s cubic-bezier(0.16, 1, 0.3, 1) both;
  animation-delay: 0.75s;
}
.hero-tagline-band {
  animation: hero-enter 1.2s cubic-bezier(0.16, 1, 0.3, 1) both;
  animation-delay: 1s;
}

/* ── Icon Bounce on Hover ── */
.icon-wrap {
  display: inline-block;
  transition: transform 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
}
.info-card:hover .icon-wrap {
  transform: scale(1.35) rotate(-8deg);
}

/* ── Nav Glow Enhancement ── */
header {
  box-shadow:
    0 2px 16px rgba(180,90,140,0.08),
    0 0 0 1px rgba(201,162,39,0.12),
    inset 0 -1px 0 rgba(201,162,39,0.18) !important;
  transition: box-shadow 0.3s ease;
}
header.scrolled {
  box-shadow:
    0 4px 32px rgba(180,90,140,0.14),
    0 0 0 1px rgba(201,162,39,0.2),
    inset 0 -1px 0 rgba(201,162,39,0.25) !important;
}

/* ── Nav Link Shimmer ── */
nav ul li a {
  position: relative;
  overflow: hidden;
}
nav ul li a::after {
  content: '';
  position: absolute;
  left: 0; bottom: 0;
  width: 0%; height: 1px;
  background: var(--gradient-gold);
  transition: width 0.3s ease;
}
nav ul li a:hover::after,
nav ul li a.active::after {
  width: 100%;
}

/* ── Quick Nav Cards ── */
.section a.card:hover {
  border-color: rgba(201,162,39,0.7) !important;
  box-shadow:
    0 12px 40px rgba(201,162,39,0.2),
    0 0 0 1px rgba(201,162,39,0.3),
    var(--shadow-card) !important;
}

/* ── Gold Divider Pulse ── */
.gold-divider {
  animation: divider-pulse 3s ease-in-out infinite;
}
@keyframes divider-pulse {
  0%, 100% { opacity: 0.65; }
  50%       { opacity: 1; }
}

/* ── Footer Glow on Links ── */
.footer-links a {
  position: relative;
  transition: color 0.3s ease, text-shadow 0.3s ease;
}
.footer-links a:hover {
  text-shadow: 0 0 12px rgba(201,162,39,0.55);
}

/* ── Announcement Band Glow Pulse ── */
.announcement-band {
  animation: announce-pulse 4s ease-in-out infinite;
}
@keyframes announce-pulse {
  0%, 100% { box-shadow: inset 0 0 20px rgba(201,162,39,0.05); }
  50%       { box-shadow: inset 0 0 40px rgba(201,162,39,0.12); }
}