/* =====================================================================
   SASHA WU — Official Site
   Design system: psychedelic floral rock × premium editorial finish
   Palette + direction per build brief §4. Hand-authored, no framework.
   ===================================================================== */

/* ---------- Tokens ---------- */
:root {
  --deep-black: #050505;
  --ink: #0b0a10;
  --electric-purple: #7B2CFF;
  --acid-blue: #19B7FF;
  --floral-red: #E93434;
  --warm-orange: #FF7A1A;
  --cream: #F6EFE2;
  --moss: #4C7A52;

  --bg: var(--deep-black);
  --fg: var(--cream);
  --muted: rgba(246, 239, 226, 0.62);
  --faint: rgba(246, 239, 226, 0.40);
  --line: rgba(246, 239, 226, 0.14);
  --card: rgba(246, 239, 226, 0.035);
  --card-hover: rgba(246, 239, 226, 0.06);

  --font-display: 'Anton', 'Noto Sans TC', sans-serif;
  --font-serif: 'Fraunces', 'Noto Serif TC', Georgia, serif;
  --font-sans: 'Sora', 'Noto Sans TC', system-ui, sans-serif;
  --font-zh: 'Noto Sans TC', system-ui, sans-serif;

  --maxw: 1280px;
  --pad: clamp(1.25rem, 5vw, 6rem);
  --section-y: clamp(5rem, 12vw, 11rem);
  --radius: 18px;

  --grad-psych: linear-gradient(120deg, var(--electric-purple), var(--acid-blue) 40%, var(--floral-red) 72%, var(--warm-orange));
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.001ms !important; transition-duration: 0.001ms !important; }
}
body {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-sans);
  font-size: clamp(1rem, 0.55vw + 0.9rem, 1.125rem);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
::selection { background: var(--electric-purple); color: #fff; }
:focus-visible { outline: 2px solid var(--acid-blue); outline-offset: 3px; border-radius: 4px; }

/* ---------- Global grain / noise overlay ---------- */
.grain {
  position: fixed; inset: 0; z-index: 9; pointer-events: none;
  opacity: 0.05; mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.8' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* ---------- Layout helpers ---------- */
.wrap { width: 100%; max-width: var(--maxw); margin-inline: auto; padding-inline: var(--pad); }
section { position: relative; padding-block: var(--section-y); }
.eyebrow {
  font-family: var(--font-sans); font-weight: 600;
  font-size: 0.72rem; letter-spacing: 0.32em; text-transform: uppercase;
  color: var(--faint); display: inline-flex; align-items: center; gap: 0.7rem;
}
.eyebrow::before { content: ""; width: 30px; height: 1px; background: var(--grad-psych); }
.section-head { max-width: 56ch; margin-bottom: clamp(2.5rem, 5vw, 4rem); }
.section-head h2 {
  font-family: var(--font-serif); font-weight: 400;
  font-size: clamp(2rem, 4.6vw, 3.6rem); line-height: 1.08; letter-spacing: -0.01em;
  margin-top: 1rem;
}
.section-head h2 em { font-style: italic; color: transparent; background: var(--grad-psych); -webkit-background-clip: text; background-clip: text; }
.section-head p { color: var(--muted); margin-top: 1.1rem; font-size: 1.02rem; }

/* ---------- Reveal animation ---------- */
[data-reveal] { opacity: 0; transform: translateY(26px); transition: opacity 0.9s var(--ease), transform 0.9s var(--ease); }
[data-reveal].is-visible { opacity: 1; transform: none; }
[data-reveal-delay="1"] { transition-delay: 0.08s; }
[data-reveal-delay="2"] { transition-delay: 0.16s; }
[data-reveal-delay="3"] { transition-delay: 0.24s; }

/* ---------- Buttons ---------- */
.btn {
  --bh: 1;
  display: inline-flex; align-items: center; gap: 0.6rem;
  font-family: var(--font-sans); font-weight: 600; font-size: 0.92rem;
  letter-spacing: 0.02em; padding: 0.95rem 1.7rem; border-radius: 100px;
  border: 1px solid transparent; cursor: pointer; position: relative;
  transition: transform 0.4s var(--ease), box-shadow 0.4s var(--ease), background 0.4s var(--ease), color 0.3s;
}
.btn:hover { transform: translateY(-2px); }
.btn .arrow { transition: transform 0.4s var(--ease); }
.btn:hover .arrow { transform: translateX(4px); }
.btn--primary { background: var(--cream); color: #0b0a10; }
.btn--primary:hover { box-shadow: 0 16px 40px -16px rgba(123, 44, 255, 0.8), 0 0 0 1px rgba(246,239,226,0.4); }
.btn--secondary { border-color: var(--line); color: var(--fg); background: rgba(246,239,226,0.02); }
.btn--secondary:hover { border-color: var(--cream); background: rgba(246,239,226,0.07); }
.btn--ghost { padding-inline: 0; color: var(--muted); }
.btn--ghost:hover { color: var(--fg); }

/* ---------- Header ---------- */
.site-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 50;
  transition: background 0.5s var(--ease), backdrop-filter 0.5s, border-color 0.5s;
  border-bottom: 1px solid transparent;
}
.site-header.scrolled {
  background: rgba(5,5,5,0.72); backdrop-filter: blur(14px) saturate(140%);
  border-bottom-color: var(--line);
}
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; padding-block: 1.1rem; }
.brand { font-family: var(--font-display); font-size: 1.35rem; letter-spacing: 0.06em; line-height: 1; }
.brand span { color: transparent; background: var(--grad-psych); -webkit-background-clip: text; background-clip: text; }
.nav { display: flex; align-items: center; gap: 2rem; }
.nav a { font-size: 0.88rem; letter-spacing: 0.04em; color: var(--muted); transition: color 0.3s; position: relative; }
.nav a::after { content: ""; position: absolute; left: 0; bottom: -6px; height: 1px; width: 0; background: var(--grad-psych); transition: width 0.4s var(--ease); }
.nav a:hover { color: var(--fg); }
.nav a:hover::after { width: 100%; }
.nav .nav-ig { color: var(--fg); border: 1px solid var(--line); padding: 0.5rem 1rem; border-radius: 100px; }
.nav .nav-ig:hover { border-color: var(--cream); }
.nav-toggle { display: none; background: none; border: 0; color: var(--fg); cursor: pointer; padding: 0.4rem; }
.nav-toggle svg { width: 26px; height: 26px; }

@media (max-width: 860px) {
  .nav-toggle { display: inline-flex; }
  .nav {
    position: fixed; inset: 0 0 0 auto; width: min(80vw, 320px);
    flex-direction: column; align-items: flex-start; justify-content: center; gap: 1.6rem;
    background: rgba(8,7,12,0.96); backdrop-filter: blur(20px);
    padding: 2rem var(--pad); transform: translateX(100%); transition: transform 0.5s var(--ease);
    border-left: 1px solid var(--line);
  }
  .nav.open { transform: none; }
  .nav a { font-size: 1.2rem; }
}

/* ---------- Hero ---------- */
.hero { min-height: 100svh; display: flex; align-items: flex-end; padding-bottom: clamp(3rem, 7vw, 6rem); overflow: hidden; }
.hero__bg { position: absolute; inset: 0; z-index: 0; }
.hero__bg img { width: 100%; height: 100%; object-fit: cover; object-position: 50% 38%; }
.hero__bg::after {
  content: ""; position: absolute; inset: 0;
  background:
    radial-gradient(120% 90% at 80% 12%, rgba(123,44,255,0.32), transparent 55%),
    radial-gradient(90% 80% at 12% 8%, rgba(25,183,255,0.22), transparent 50%),
    linear-gradient(180deg, rgba(5,5,5,0.35) 0%, rgba(5,5,5,0.45) 38%, rgba(5,5,5,0.92) 92%);
}
.hero__bg-photo { position: absolute; inset: 0; z-index: 1; mix-blend-mode: screen; opacity: 0.0; }
.hero__inner { position: relative; z-index: 3; width: 100%; }
.hero__kicker { color: var(--cream); margin-bottom: 1.4rem; }
.hero__title {
  font-family: var(--font-display); font-weight: 400;
  font-size: clamp(4.2rem, 17vw, 15rem); line-height: 0.86; letter-spacing: 0.005em;
  text-transform: uppercase; margin-bottom: 0.4rem;
}
.hero__title .ln { display: block; overflow: hidden; }
.hero__title .ln > span { display: block; transform: translateY(105%); animation: heroRise 1.1s var(--ease) forwards; }
.hero__title .ln:nth-child(2) > span { animation-delay: 0.12s; }
@keyframes heroRise { to { transform: none; } }
.hero__title .stroke {
  color: transparent; -webkit-text-stroke: 1.5px rgba(246,239,226,0.55);
}
.hero__sub { max-width: 40ch; font-family: var(--font-serif); font-style: italic; font-size: clamp(1.15rem, 2.4vw, 1.7rem); color: var(--cream); line-height: 1.4; margin-bottom: 0.5rem; }
.hero__sub-zh { color: var(--muted); font-family: var(--font-zh); letter-spacing: 0.04em; font-size: clamp(0.92rem, 1.6vw, 1.05rem); margin-bottom: 2.2rem; }
.hero__cta { display: flex; flex-wrap: wrap; gap: 1rem; }
.hero__scroll { position: absolute; bottom: 1.6rem; right: var(--pad); z-index: 3; display: flex; align-items: center; gap: 0.6rem; font-size: 0.72rem; letter-spacing: 0.22em; text-transform: uppercase; color: var(--faint); }
.hero__scroll .line { width: 1px; height: 46px; background: linear-gradient(var(--cream), transparent); animation: scrollPulse 2.2s ease-in-out infinite; transform-origin: top; }
@keyframes scrollPulse { 0%,100% { transform: scaleY(0.4); opacity: 0.4; } 50% { transform: scaleY(1); opacity: 1; } }

/* Bass waveform line */
.basswave { position: absolute; left: 0; right: 0; bottom: 0; z-index: 2; height: 120px; pointer-events: none; opacity: 0.5; }
.basswave path { fill: none; stroke: url(#wavegrad); stroke-width: 2; }

/* ---------- Marquee strip ---------- */
.strip { border-block: 1px solid var(--line); padding-block: 1.1rem; overflow: hidden; background: rgba(246,239,226,0.015); }
.strip__track { display: flex; gap: 3rem; width: max-content; animation: marquee 38s linear infinite; }
.strip:hover .strip__track { animation-play-state: paused; }
@keyframes marquee { to { transform: translateX(-50%); } }
.strip__item { font-family: var(--font-display); font-size: clamp(1.1rem, 2vw, 1.6rem); letter-spacing: 0.04em; color: var(--faint); display: inline-flex; align-items: center; gap: 3rem; text-transform: uppercase; }
.strip__item::after { content: "✦"; color: var(--electric-purple); font-size: 0.8em; }

/* ---------- Statement ---------- */
.statement .wrap { max-width: 1040px; }
.statement p {
  font-family: var(--font-serif); font-weight: 400;
  font-size: clamp(1.5rem, 3.7vw, 2.9rem); line-height: 1.32; letter-spacing: -0.01em;
}
.statement p .hl { color: transparent; background: var(--grad-psych); -webkit-background-clip: text; background-clip: text; font-style: italic; }
.statement .sig { margin-top: 2.2rem; font-family: var(--font-sans); font-size: 0.85rem; letter-spacing: 0.2em; text-transform: uppercase; color: var(--faint); }

/* ---------- Stage DNA ---------- */
.dna__grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.dna__cell { background: var(--ink); padding: clamp(1.6rem, 3vw, 2.4rem); min-height: 200px; display: flex; flex-direction: column; justify-content: space-between; transition: background 0.5s var(--ease); }
.dna__cell:hover { background: var(--card-hover); }
.dna__num { font-family: var(--font-display); font-size: 1rem; color: var(--electric-purple); letter-spacing: 0.1em; }
.dna__cell h3 { font-family: var(--font-serif); font-size: 1.5rem; font-weight: 400; margin-bottom: 0.4rem; }
.dna__cell p { color: var(--muted); font-size: 0.92rem; }

/* ---------- Timeline ---------- */
.timeline { display: grid; gap: 0; }
.tl-row { border-top: 1px solid var(--line); }
.tl-row:last-child { border-bottom: 1px solid var(--line); }
.tl-head { width: 100%; background: none; border: 0; color: inherit; cursor: pointer; text-align: left;
  display: grid; grid-template-columns: minmax(120px, 0.4fr) 1fr auto; align-items: center; gap: 1.5rem;
  padding-block: clamp(1.4rem, 2.6vw, 2.1rem); transition: padding 0.4s var(--ease); }
.tl-year { font-family: var(--font-display); font-size: clamp(2.2rem, 6vw, 4rem); line-height: 1; transition: color 0.4s; }
.tl-row[aria-expanded="true"] .tl-year { color: transparent; background: var(--grad-psych); -webkit-background-clip: text; background-clip: text; }
.tl-meta { color: var(--muted); font-size: 0.9rem; }
.tl-meta b { color: var(--fg); font-weight: 600; }
.tl-plus { width: 38px; height: 38px; border: 1px solid var(--line); border-radius: 50%; display: grid; place-items: center; transition: transform 0.5s var(--ease), border-color 0.4s; flex-shrink: 0; }
.tl-row[aria-expanded="true"] .tl-plus { transform: rotate(135deg); border-color: var(--cream); }
.tl-plus::before, .tl-plus::after { content: ""; position: absolute; background: var(--fg); }
.tl-plus::before { width: 13px; height: 1.5px; }
.tl-plus::after { width: 1.5px; height: 13px; }
.tl-body { display: grid; grid-template-rows: 0fr; transition: grid-template-rows 0.55s var(--ease); }
.tl-row[aria-expanded="true"] .tl-body { grid-template-rows: 1fr; }
.tl-body > div { overflow: hidden; }
.tl-list { display: grid; gap: 0.2rem; padding-bottom: 2rem; padding-left: clamp(0px, 10vw, 140px); }
.tl-item { display: flex; flex-wrap: wrap; align-items: baseline; gap: 0.7rem 1rem; padding-block: 0.7rem; border-top: 1px solid rgba(246,239,226,0.06); }
.tl-item:first-child { border-top: 0; }
.tl-item .t { font-size: 1rem; color: var(--fg); flex: 1 1 60%; min-width: 240px; }
.tl-item .loc { font-size: 0.8rem; color: var(--faint); }
.chip { font-size: 0.68rem; letter-spacing: 0.08em; text-transform: uppercase; padding: 0.28rem 0.7rem; border-radius: 100px; border: 1px solid var(--line); color: var(--muted); white-space: nowrap; }
.chip[data-c="concert"] { border-color: rgba(233,52,52,0.5); color: #ff8f8f; }
.chip[data-c="tour"] { border-color: rgba(255,122,26,0.5); color: #ffc08a; }
.chip[data-c="musical"] { border-color: rgba(123,44,255,0.5); color: #c4a3ff; }
.chip[data-c="festival"] { border-color: rgba(25,183,255,0.5); color: #9fe0ff; }
.chip[data-c="tv_event"] { border-color: rgba(76,122,82,0.6); color: #9fd0a6; }
.chip[data-c="press"] { border-color: var(--line); color: var(--muted); }

/* ---------- Collaborators ---------- */
.collab__cloud { display: flex; flex-wrap: wrap; gap: 0.8rem; }
.collab__tag {
  font-family: var(--font-serif); font-size: clamp(1.05rem, 2.4vw, 1.9rem); line-height: 1;
  padding: 0.55rem 1.1rem; border: 1px solid var(--line); border-radius: 100px; color: var(--muted);
  transition: color 0.4s, border-color 0.4s, background 0.4s, transform 0.4s var(--ease);
}
.collab__tag:hover { color: var(--fg); border-color: transparent; background: var(--card-hover); transform: translateY(-3px); }
.collab__note { margin-top: 1.6rem; font-size: 0.82rem; color: var(--faint); }

/* ---------- Gallery ---------- */
.gallery__grid { columns: 3 280px; column-gap: 16px; }
.gallery__item { break-inside: avoid; margin-bottom: 16px; position: relative; border-radius: var(--radius); overflow: hidden; background: var(--ink); }
.gallery__item img { width: 100%; height: auto; transition: transform 0.9s var(--ease), filter 0.6s; filter: saturate(0.92); }
.gallery__item:hover img { transform: scale(1.04); filter: saturate(1.15); }
.gallery__item figcaption { position: absolute; inset: auto 0 0 0; padding: 1.4rem 1.1rem 1rem; font-size: 0.78rem; letter-spacing: 0.04em; color: var(--cream);
  background: linear-gradient(transparent, rgba(5,5,5,0.85)); opacity: 0; transform: translateY(8px); transition: opacity 0.5s, transform 0.5s var(--ease); }
.gallery__item:hover figcaption { opacity: 1; transform: none; }

/* ---------- Services ---------- */
.svc__grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 1rem; }
.svc__card { border: 1px solid var(--line); border-radius: var(--radius); padding: clamp(1.6rem, 3vw, 2.2rem); background: var(--card); transition: background 0.5s, border-color 0.5s, transform 0.5s var(--ease); position: relative; overflow: hidden; }
.svc__card::before { content: ""; position: absolute; inset: 0; background: var(--grad-psych); opacity: 0; transition: opacity 0.5s; mix-blend-mode: overlay; }
.svc__card:hover { transform: translateY(-4px); border-color: transparent; background: var(--card-hover); }
.svc__card:hover::before { opacity: 0.12; }
.svc__card h3 { font-family: var(--font-serif); font-size: 1.45rem; font-weight: 400; margin-bottom: 0.2rem; }
.svc__card .en { font-size: 0.72rem; letter-spacing: 0.18em; text-transform: uppercase; color: var(--faint); margin-bottom: 0.9rem; }
.svc__card p { color: var(--muted); font-size: 0.92rem; }
.svc__card .tag { margin-top: 1.2rem; display: inline-block; font-size: 0.7rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--acid-blue); }

/* ---------- Split (press / media) ---------- */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(1.5rem, 5vw, 4.5rem); align-items: center; }
@media (max-width: 880px) { .split { grid-template-columns: 1fr; } }
.split__media { border-radius: var(--radius); overflow: hidden; aspect-ratio: 4/5; background: var(--ink); position: relative; }
.split__media img { width: 100%; height: 100%; object-fit: cover; }
.media-ph { aspect-ratio: 16/9; border: 1px dashed var(--line); border-radius: var(--radius); display: grid; place-items: center; text-align: center; color: var(--faint); background: radial-gradient(circle at 50% 40%, rgba(123,44,255,0.10), transparent 60%); gap: 0.6rem; padding: 2rem; }
.media-ph svg { width: 54px; height: 54px; opacity: 0.6; }
.press__list { list-style: none; display: grid; gap: 0.9rem; margin-top: 1.6rem; }
.press__list li { display: flex; gap: 0.9rem; color: var(--muted); font-size: 0.95rem; }
.press__list li::before { content: ""; width: 7px; height: 7px; margin-top: 0.55rem; border-radius: 50%; background: var(--grad-psych); flex-shrink: 0; }

/* ---------- Contact ---------- */
.contact { text-align: center; }
.contact__big { font-family: var(--font-display); font-size: clamp(2.6rem, 9vw, 7rem); line-height: 0.92; text-transform: uppercase; margin-bottom: 1.4rem; }
.contact__big a { color: transparent; -webkit-text-stroke: 1.5px var(--cream); transition: -webkit-text-stroke 0.4s, color 0.4s; }
.contact__big a:hover { color: var(--cream); -webkit-text-stroke-color: transparent; }
.contact p { color: var(--muted); max-width: 48ch; margin-inline: auto; margin-bottom: 2rem; }
.contact__row { display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; }
.contact__note { margin-top: 1.6rem; font-size: 0.78rem; color: var(--faint); }

/* ---------- Footer ---------- */
.site-footer { border-top: 1px solid var(--line); padding-block: 3.5rem; }
.site-footer .wrap { display: flex; flex-wrap: wrap; gap: 2rem; justify-content: space-between; align-items: flex-end; }
.foot-brand { font-family: var(--font-display); font-size: 2rem; letter-spacing: 0.05em; }
.foot-links { display: flex; gap: 1.6rem; flex-wrap: wrap; }
.foot-links a { font-size: 0.85rem; color: var(--muted); transition: color 0.3s; }
.foot-links a:hover { color: var(--fg); }
.foot-legal { width: 100%; margin-top: 2rem; padding-top: 1.6rem; border-top: 1px solid var(--line); display: flex; flex-wrap: wrap; gap: 0.6rem 2rem; justify-content: space-between; }
.foot-legal small { color: var(--faint); font-size: 0.74rem; line-height: 1.6; }

/* ---------- Full-bleed photo section backgrounds ---------- */
.has-bg { isolation: isolate; }
.sbg { position: absolute; inset: 0; z-index: -2; overflow: hidden; pointer-events: none; }
.sbg img {
  width: 100%; height: 130%; object-fit: cover; object-position: var(--bg-pos, 50% 35%);
  opacity: var(--bg-op, 0.26); filter: grayscale(0.15) contrast(1.05) brightness(0.9);
  transform: translateY(var(--par, 0)) scale(1.06); will-change: transform;
}
.sbg::after {
  content: ""; position: absolute; inset: 0;
  background:
    radial-gradient(120% 80% at 80% 0%, rgba(123,44,255,0.18), transparent 60%),
    linear-gradient(180deg, var(--deep-black) 0%, rgba(5,5,5,0.55) 38%, rgba(5,5,5,0.82) 78%, var(--deep-black) 100%);
}
@media (prefers-reduced-motion: reduce) { .sbg img { transform: scale(1.04); } }

/* ---------- Section tints ---------- */
.tint { position: absolute; inset: 0; z-index: -1; pointer-events: none; opacity: 0.5; }
.tint--a { background: radial-gradient(60% 50% at 85% 0%, rgba(123,44,255,0.14), transparent 70%); }
.tint--b { background: radial-gradient(50% 50% at 10% 100%, rgba(25,183,255,0.12), transparent 70%); }
.tint--c { background: radial-gradient(55% 50% at 50% 0%, rgba(233,52,52,0.10), transparent 70%); }

@media (max-width: 640px) {
  .tl-head { grid-template-columns: 1fr auto; }
  .tl-meta { display: none; }
  .tl-list { padding-left: 0; }
  .gallery__grid { columns: 2 150px; }
}