/* 汐日攝影 — Animations, Form, Footer, Responsive */

/* =============================================
   INTRO LOADER — Cinematic Multi-Phase
   ============================================= */

.intro-loader {
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: #000;
  overflow: hidden;
}
.intro-loader.hidden { display: none; }

/* Phase base */
.intro-phase {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.4s ease;
}
.intro-phase.active { opacity: 1; }

/* ── PHASE 1: Logo + Counter ── */
.intro-logo-main {
  height: clamp(32px, 6vw, 48px);
  width: auto;
  filter: brightness(0) invert(1);
  opacity: 0;
  transform: scale(0.92);
  transition: opacity 0.9s cubic-bezier(0.22,1,0.36,1), transform 1s cubic-bezier(0.22,1,0.36,1);
}
.intro-phase.active .intro-logo-main {
  opacity: 1;
  transform: scale(1);
}

.intro-counter-wrap {
  margin-top: 40px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  opacity: 0;
  transition: opacity 0.5s ease 0.5s;
}
.intro-phase.active .intro-counter-wrap { opacity: 1; }

.intro-counter-bar {
  width: 160px;
  height: 1px;
  background: rgba(255,255,255,0.08);
  position: relative;
  overflow: hidden;
}
.intro-counter-fill {
  position: absolute;
  top: 0; left: 0;
  height: 100%;
  width: 0%;
  background: linear-gradient(to right, transparent, rgba(255,255,255,0.7), rgba(255,255,255,0.3));
  box-shadow: 0 0 8px rgba(255,255,255,0.4);
}

/* Camera-style loading label above counter */
.intro-counter-label {
  font-family: 'Montserrat', Arial, sans-serif;
  font-size: 0.32rem;
  font-weight: 400;
  letter-spacing: 0.6em;
  color: rgba(255,255,255,0.18);
  text-transform: uppercase;
  margin-bottom: 0;
}

.intro-counter-num {
  font-family: 'Montserrat', Arial, sans-serif;
  font-size: clamp(0.65rem, 1.4vw, 0.82rem);
  font-weight: 200;
  letter-spacing: 0.3em;
  color: rgba(255,255,255,0.4);
  line-height: 1;
  transition: color 0.1s;
}

/* Noise grain overlay on phase1 */
.intro-phase#introPhase1::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.04'/%3E%3C/svg%3E");
  opacity: 0.25;
  pointer-events: none;
  animation: grain 0.5s steps(1) infinite;
}

/* Corner frame on phase 1 */
.intro-phase#introPhase1::after {
  content: '';
  position: absolute;
  inset: 32px;
  border: 1px solid rgba(255,255,255,0.05);
  pointer-events: none;
  animation: cornerFade 2s ease 0.5s both;
}
@keyframes cornerFade {
  from { opacity: 0; }
  to   { opacity: 1; }
}

@keyframes grain {
  0%  { transform:translate(0,0) }
  20% { transform:translate(-2%,-3%) }
  40% { transform:translate(3%,2%) }
  60% { transform:translate(-1%,3%) }
  80% { transform:translate(2%,-2%) }
  100%{ transform:translate(0,0) }
}

/* ── PHASE 2: Tagline + Brand Chars ── */
.intro-phase#introPhase2::after {
  content: '';
  position: absolute;
  top: 0;
  left: -30%;
  width: 25%;
  height: 100%;
  background: linear-gradient(to right,
    transparent 0%,
    rgba(255,255,255,0.03) 40%,
    rgba(255,255,255,0.08) 50%,
    rgba(255,255,255,0.03) 60%,
    transparent 100%
  );
  transform: skewX(-12deg);
  animation: scanBeam 1.4s cubic-bezier(0.4,0,0.2,1) 0.2s both;
  pointer-events: none;
  z-index: 0;
}
@keyframes scanBeam {
  from { left: -30%; }
  to   { left: 115%; }
}

.intro-phase#introPhase2::before {
  content: '';
  position: absolute;
  top: 50%;
  left: -10%;
  width: 120%;
  height: 1px;
  background: linear-gradient(to right,
    transparent,
    rgba(255,255,255,0.06) 30%,
    rgba(255,255,255,0.18) 50%,
    rgba(255,255,255,0.06) 70%,
    transparent
  );
  animation: streakLine 1.2s ease 0.1s both;
  pointer-events: none;
}
@keyframes streakLine {
  from { opacity: 0; transform: translateX(-20px); }
  20%  { opacity: 1; }
  80%  { opacity: 1; }
  to   { opacity: 0; transform: translateX(20px); }
}

/* Tagline — small italic subtitle, clip-path reveal */
.intro-tagline {
  font-family: 'Cormorant Garamond', Georgia, serif;
  font-size: clamp(0.7rem, 1.4vw, 0.95rem);
  font-weight: 300;
  letter-spacing: 0.45em;
  color: rgba(255,255,255,0.35);
  font-style: italic;
  margin: 0 0 0;
  clip-path: inset(0 100% 0 0);
  transition: clip-path 1s cubic-bezier(0.4,0,0.2,1) 0.2s;
  white-space: nowrap;
  position: relative;
  z-index: 1;
  text-transform: uppercase;
}
.intro-phase.active .intro-tagline {
  clip-path: inset(0 0% 0 0);
}

/* P2 horizontal accent line */
.p2-accent-line {
  width: 0;
  height: 1px;
  background: linear-gradient(to right, transparent, rgba(255,255,255,0.35), transparent);
  margin: 28px 0 36px;
  position: relative;
  z-index: 1;
  transition: width 0.9s cubic-bezier(0.4,0,0.2,1);
}
.p2-accent-line.expanded { width: 200px; }

/* P2 English subtitle — small caps below brand name */
.p2-en-subtitle {
  font-family: 'Montserrat', Arial, sans-serif;
  font-size: 0.42rem;
  font-weight: 300;
  letter-spacing: 0.62em;
  color: rgba(255,255,255,0.22);
  text-transform: uppercase;
  margin-top: 28px;
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 1s ease, transform 1s cubic-bezier(0.22,1,0.36,1);
  position: relative;
  z-index: 1;
}
.p2-en-subtitle.visible {
  opacity: 1;
  transform: translateY(0);
}

.intro-brand-chars {
  display: flex;
  gap: 0.06em;
  position: relative;
  z-index: 1;
}

/* Cinematic drift entrance — elegant, not slamming */
.ibc {
  font-family: 'Montserrat', Arial, sans-serif;
  font-size: clamp(2rem, 5.5vw, 4.2rem);
  font-weight: 100;
  color: #fff;
  line-height: 1;
  opacity: 0;
  transform: translateY(22px);
  display: inline-block;
  letter-spacing: 0.1em;
  text-shadow: 0 0 100px rgba(255,255,255,0.05);
}

/* P2 SINCE line */
.p2-since {
  font-family: 'Montserrat', Arial, sans-serif;
  font-size: 0.72rem;
  font-weight: 200;
  letter-spacing: 0.55em;
  color: rgba(255,255,255,0.18);
  text-transform: uppercase;
  margin-top: 10px;
  opacity: 0;
  transform: translateY(6px);
  transition: opacity 0.9s ease, transform 0.9s cubic-bezier(0.22,1,0.36,1);
  position: relative;
  z-index: 1;
}
.p2-since.visible { opacity: 1; transform: translateY(0); }

/* ── PHASE 3: Cinematic Photo Flash ── */
.intro-photos {
  position: absolute;
  inset: 0;
}

.intro-photo {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  filter: grayscale(100%) brightness(0.55) contrast(1.2);
  opacity: 0;
}
.intro-photo.visible {
  opacity: 1;
}

/* Ken Burns animations */
@keyframes kbZoomIn {
  from { transform: scale(1.12); }
  to   { transform: scale(1.0); }
}
@keyframes kbZoomOut {
  from { transform: scale(1.0); }
  to   { transform: scale(1.08); }
}
@keyframes kbPanLeft {
  from { transform: scale(1.08) translateX(3%); }
  to   { transform: scale(1.02) translateX(0); }
}
@keyframes kbPanRight {
  from { transform: scale(1.08) translateX(-3%); }
  to   { transform: scale(1.02) translateX(0); }
}
@keyframes kbPanUp {
  from { transform: scale(1.08) translateY(3%); }
  to   { transform: scale(1.02) translateY(0); }
}

/* Duration matches crossfade(500ms) + hold(600ms) + next crossfade(500ms) = 1.6s */
.intro-photo.kb-in    { animation: kbZoomIn  1.8s cubic-bezier(0.22,1,0.36,1) forwards; }
.intro-photo.kb-out   { animation: kbZoomOut 1.8s cubic-bezier(0.22,1,0.36,1) forwards; }
.intro-photo.kb-left  { animation: kbPanLeft  1.8s cubic-bezier(0.22,1,0.36,1) forwards; }
.intro-photo.kb-right { animation: kbPanRight 1.8s cubic-bezier(0.22,1,0.36,1) forwards; }
.intro-photo.kb-up    { animation: kbPanUp    1.8s cubic-bezier(0.22,1,0.36,1) forwards; }

/* Scanline overlay on photos */
.intro-photos::after {
  content: '';
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(
    to bottom,
    transparent 0px,
    transparent 3px,
    rgba(0,0,0,0.1) 3px,
    rgba(0,0,0,0.1) 4px
  );
  pointer-events: none;
  z-index: 5;
}

/* Cinematic cut overlay — dark, not white */
.intro-shutter-flash {
  position: absolute;
  inset: 0;
  background: #000;
  opacity: 0;
  z-index: 20;
  pointer-events: none;
}

/* Cinematic text overlay — fades in with each photo group */
.intro-p3-text {
  position: absolute;
  bottom: 72px;
  left: 52px;
  z-index: 16;
  pointer-events: none;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.p3-line {
  display: block;
  font-family: 'Cormorant Garamond', Georgia, serif;
  font-size: clamp(1.1rem, 2.6vw, 1.75rem);
  font-weight: 300;
  letter-spacing: 0.12em;
  color: rgba(255,255,255,0.82);
  text-shadow: 0 2px 24px rgba(0,0,0,0.7), 0 0 60px rgba(0,0,0,0.5);
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.9s cubic-bezier(0.22,1,0.36,1), transform 0.9s cubic-bezier(0.22,1,0.36,1);
  white-space: nowrap;
}

.p3-line.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Photo counter bottom-right */
.intro-photo-num {
  position: absolute;
  bottom: 28px;
  right: 36px;
  font-family: 'Montserrat', Arial, sans-serif;
  font-size: 0.5rem;
  letter-spacing: 0.4em;
  color: rgba(255,255,255,0.22);
  z-index: 15;
  pointer-events: none;
}

/* Photo progress bar bottom */
.intro-photo-progress {
  position: absolute;
  bottom: 0;
  left: 0;
  height: 2px;
  width: 0%;
  background: rgba(255,255,255,0.35);
  z-index: 15;
  pointer-events: none;
  box-shadow: 0 0 6px rgba(255,255,255,0.2);
  transition: width 0.1s linear;
}

/* Vertical brand label — right edge */
.intro-p3-brand {
  position: absolute;
  top: 50%;
  right: 28px;
  transform: translateY(-50%) rotate(90deg);
  font-family: 'Montserrat', Arial, sans-serif;
  font-size: 0.38rem;
  letter-spacing: 0.55em;
  color: rgba(255,255,255,0.14);
  text-transform: uppercase;
  z-index: 15;
  pointer-events: none;
  white-space: nowrap;
}

/* Top-left exposure label */
.intro-p3-label {
  position: absolute;
  top: 28px;
  left: 36px;
  font-family: 'Montserrat', Arial, sans-serif;
  font-size: 0.4rem;
  letter-spacing: 0.4em;
  color: rgba(255,255,255,0.16);
  text-transform: uppercase;
  z-index: 15;
  pointer-events: none;
}

/* Corner brackets */
.intro-p3-corner {
  position: absolute;
  width: 18px;
  height: 18px;
  z-index: 15;
  pointer-events: none;
  opacity: 0.16;
}
.intro-p3-corner::before,
.intro-p3-corner::after {
  content: '';
  position: absolute;
  background: #fff;
}
.intro-p3-corner.tl { top: 18px; left: 18px; }
.intro-p3-corner.tr { top: 18px; right: 18px; }
.intro-p3-corner.bl { bottom: 18px; left: 18px; }
.intro-p3-corner.br { bottom: 18px; right: 18px; }
.intro-p3-corner.tl::before,
.intro-p3-corner.tl::after { top: 0; left: 0; }
.intro-p3-corner.tr::before,
.intro-p3-corner.tr::after { top: 0; right: 0; }
.intro-p3-corner.bl::before,
.intro-p3-corner.bl::after { bottom: 0; left: 0; }
.intro-p3-corner.br::before,
.intro-p3-corner.br::after { bottom: 0; right: 0; }
.intro-p3-corner::before { width: 100%; height: 1px; }
.intro-p3-corner::after  { height: 100%; width: 1px; }

/* ── Skip Button ── */
.intro-skip {
  position: fixed;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 10000;
  background: none;
  border: 1px solid rgba(255,255,255,0.12);
  color: rgba(255,255,255,0.28);
  font-family: 'Montserrat', Arial, sans-serif;
  font-size: 0.58rem;
  font-weight: 400;
  letter-spacing: 0.35em;
  text-transform: uppercase;
  padding: 10px 28px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 8px;
  opacity: 0;
  transition: opacity 0.4s ease, border-color 0.3s ease, color 0.3s ease;
  pointer-events: none;
}
.intro-skip.visible {
  opacity: 1;
  pointer-events: all;
}
.intro-skip:hover {
  border-color: rgba(255,255,255,0.3);
  color: rgba(255,255,255,0.55);
}
.intro-skip i { font-size: 0.55rem; }

/* ── Outro overlay ── */
.intro-outro {
  position: fixed;
  inset: 0;
  background: #000;
  z-index: 9998;
  opacity: 0;
  pointer-events: none;
}
.intro-outro.fade-in { opacity: 1; pointer-events: all; }

/* =============================================
   SITE ENTER — Cinematic hero reveal
   ============================================= */

body:not(.site-enter) .hero-content,
body:not(.site-enter) .hero-scroll,
body:not(.site-enter) .navbar {
  opacity: 0;
}

/* Subtitle slides in from left with expanding letter-spacing */
body.site-enter .hero-subtitle {
  animation: siteEnterLeft 1s cubic-bezier(0.22,1,0.36,1) 0.15s both;
}
/* Title rises with slight skew — cinematic */
body.site-enter .hero-title {
  animation: siteEnterTitle 1.1s cubic-bezier(0.22,1,0.36,1) 0.3s both;
}
/* Divider scales in from left */
body.site-enter .hero-divider {
  animation: siteEnterScaleX 0.8s cubic-bezier(0.22,1,0.36,1) 0.55s both;
  transform-origin: left center;
}
/* Desc fades up */
body.site-enter .hero-desc {
  animation: siteEnterUp 0.9s cubic-bezier(0.22,1,0.36,1) 0.65s both;
}
/* Button rises last */
body.site-enter .btn-primary {
  animation: siteEnterUp 0.8s cubic-bezier(0.22,1,0.36,1) 0.82s both;
}
/* Scroll indicator fades in */
body.site-enter .hero-scroll {
  animation: siteEnterFade 1s ease 1.1s both;
}
/* Navbar slides down */
body.site-enter .navbar {
  animation: siteEnterDown 0.7s cubic-bezier(0.22,1,0.36,1) 0.1s both;
}

@keyframes siteEnterLeft {
  from { opacity: 0; transform: translateX(-28px); letter-spacing: 0.55em; }
  to   { opacity: 1; transform: translateX(0); }
}
@keyframes siteEnterTitle {
  from { opacity: 0; transform: translateY(52px) skewY(3deg); }
  to   { opacity: 1; transform: translateY(0) skewY(0); }
}
@keyframes siteEnterScaleX {
  from { opacity: 0; transform: scaleX(0); }
  to   { opacity: 1; transform: scaleX(1); }
}
@keyframes siteEnterUp {
  from { opacity: 0; transform: translateY(32px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes siteEnterFade {
  from { opacity: 0; }
  to   { opacity: 1; }
}
@keyframes siteEnterDown {
  from { opacity: 0; transform: translateY(-20px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* =============================================
   PORTFOLIO — Cinematic group reveal
   ============================================= */

/* Portfolio reveal - simple fade up (no clip-path for performance) */
.portfolio-item {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s cubic-bezier(0.22,1,0.36,1);
}
.portfolio-grid.visible .portfolio-item:nth-child(1) { transition-delay: 0s; }
.portfolio-grid.visible .portfolio-item:nth-child(2) { transition-delay: 0.06s; }
.portfolio-grid.visible .portfolio-item:nth-child(3) { transition-delay: 0.12s; }
.portfolio-grid.visible .portfolio-item:nth-child(4) { transition-delay: 0.06s; }
.portfolio-grid.visible .portfolio-item:nth-child(5) { transition-delay: 0.12s; }
.portfolio-grid.visible .portfolio-item:nth-child(6) { transition-delay: 0.18s; }
.portfolio-grid.visible .portfolio-item:nth-child(7) { transition-delay: 0.12s; }
.portfolio-grid.visible .portfolio-item:nth-child(8) { transition-delay: 0.18s; }
.portfolio-grid.visible .portfolio-item:nth-child(9) { transition-delay: 0.24s; }
.portfolio-grid.visible .portfolio-item:nth-child(10){ transition-delay: 0.18s; }
.portfolio-grid.visible .portfolio-item:nth-child(11){ transition-delay: 0.24s; }
.portfolio-grid.visible .portfolio-item:nth-child(12){ transition-delay: 0.30s; }
.portfolio-grid.visible .portfolio-item {
  opacity: 1;
  transform: translateY(0);
}

/* =============================================
   FORM, FOOTER, RESPONSIVE
   ============================================= */

.form-label{position:absolute;top:16px;left:0;font-family:var(--font-sans);font-size:.75rem;color:var(--gray);letter-spacing:.1em;transition:all 0.3s ease;pointer-events:none}
.form-input:focus~.form-label,
.form-input:not(:placeholder-shown)~.form-label{top:-8px;font-size:.6rem;letter-spacing:.2em;color:var(--gray-light)}
.form-textarea{min-height:120px;resize:none;padding-top:16px}
.form-select{-webkit-appearance:none;appearance:none;cursor:pointer;color:var(--gray)}
.form-select option{background:var(--dark-1);color:var(--white)}

.footer{padding:60px 40px;background:var(--black);border-top:1px solid var(--dark-3);text-align:center}
.footer-inner{max-width:600px;margin:0 auto;display:flex;flex-direction:column;align-items:center;gap:20px}
.footer-logo-img{height:50px;width:auto;filter:brightness(0) invert(1);opacity:.6}
.footer-tagline{font-family:var(--font-light);font-size:.85rem;color:var(--gray);letter-spacing:.15em;font-style:italic}
.footer-divider{width:40px;height:1px;background:var(--gray-dark)}
.footer-links{display:flex;gap:24px;flex-wrap:wrap;justify-content:center}
.footer-links a{font-family:var(--font-sans);font-size:.6rem;letter-spacing:.2em;text-transform:uppercase;color:var(--gray);transition:color 0.3s ease}
.footer-links a:hover{color:var(--white)}
.footer-copy{font-family:var(--font-sans);font-size:.6rem;letter-spacing:.1em;color:var(--gray-dark)}

/* Reveal Animation */
.reveal{opacity:0;transform:translateY(40px);transition:opacity 0.8s ease,transform 0.8s ease}
.reveal.visible{opacity:1;transform:translateY(0)}
.reveal.delay-1{transition-delay:.15s}
.reveal.delay-2{transition-delay:.3s}
.reveal.delay-3{transition-delay:.45s}
.reveal.delay-4{transition-delay:.6s}

/* Hero Fade-in */
.fade-in-up{opacity:0;transform:translateY(30px);animation:fadeInUp 0.9s ease forwards}
@keyframes fadeInUp{to{opacity:1;transform:translateY(0)}}
.delay-1{animation-delay:.3s}
.delay-2{animation-delay:.6s}
.delay-3{animation-delay:.9s}
.delay-4{animation-delay:1.1s}
.delay-5{animation-delay:1.3s}

/* Toast */
.toast{position:fixed;bottom:30px;right:30px;padding:14px 24px;background:var(--white);color:var(--black);font-family:var(--font-sans);font-size:.75rem;letter-spacing:.1em;z-index:9999;transform:translateY(20px);opacity:0;transition:all 0.4s ease}
.toast.show{transform:translateY(0);opacity:1}

/* =============================================
   RESPONSIVE
   ============================================= */
@media(max-width:1024px){
  .about-grid{grid-template-columns:1fr;gap:60px}
  .about-image-wrap{max-width:480px;margin:0 auto}
  .contact-grid{grid-template-columns:1fr;gap:60px}
  .services-grid{grid-template-columns:1fr}
}
@media(max-width:768px){
  .container{padding:0 24px}
  .nav-links{display:none;position:fixed;top:0;left:0;width:100%;height:100vh;background:rgba(0,0,0,.98);flex-direction:column;align-items:center;justify-content:center;gap:32px}
  .nav-links.open{display:flex}
  .nav-link{font-size:1rem;letter-spacing:.25em}
  .nav-toggle{display:flex}
  .portfolio-grid{grid-template-columns:1fr 1fr;grid-auto-rows:200px}
  .portfolio-item.large,.portfolio-item.wide,.portfolio-item.w3{grid-column:span 2}
  .portfolio-item.tall{grid-row:span 2}
  .services-grid{grid-template-columns:1fr}
  .service-card{padding:40px 28px}
  .about,.portfolio,.services,.contact{padding:80px 0}
  .quote-banner{padding:70px 24px}
  .footer{padding:50px 24px}
  /* Intro mobile */
  .intro-counter-bar{width:140px}
  .intro-p3-brand, .intro-p3-label { display: none; }
  .intro-p3-text{ left:24px; bottom:60px; }
  .p3-line{ font-size:clamp(0.9rem,4vw,1.2rem); white-space:normal; }
  /* Hero mobile */
  .hero-content{ bottom:80px; left:24px; right:24px; max-width:100%; }
  .hero-title{ white-space:normal; font-size:clamp(1.8rem,7vw,3rem); }
  .p2-accent-line.expanded{ width:140px; }
  .ibc{ font-size:clamp(2rem,10vw,3.5rem); }
  .p2-since{ font-size:0.58rem; }
}
@media(max-width:480px){
  .portfolio-grid{grid-template-columns:1fr 1fr;grid-auto-rows:180px}
  .portfolio-item.large{grid-column:span 2;grid-row:span 2}
  .portfolio-item.wide,.portfolio-item.w3{grid-column:span 2}
  .portfolio-item.tall{grid-row:span 2}
  .about-stats{flex-direction:column;gap:24px;text-align:center}
  .stat-divider{width:40px;height:1px}
  .footer-links{gap:16px}
  .nav-container{padding:0 20px}
  /* Intro small mobile */
  .ibc{ font-size:clamp(1.8rem,9vw,2.8rem); }
  .intro-counter-num{ font-size:clamp(0.65rem,1.4vw,0.82rem); }
  .intro-tagline{ font-size:0.7rem; letter-spacing:0.25em; }
  .p3-line{ font-size:clamp(0.85rem,3.8vw,1.1rem); }
}