/* ============================================================
   UNSTOPPABLE BASKETBALL — shared stylesheet
   Editorial / premium look inspired by thibautcourtois.com,
   re-themed to the club's navy / light-blue / white identity.
   ============================================================ */

:root{
  --navy-950:#050d1a;
  --navy-900:#081326;
  --navy-800:#0b1c36;
  --navy-700:#0f2747;
  --navy-600:#15335c;
  --navy-500:#1c4174;

  --blue-400:#8fd4ff;
  --blue-300:#b7e4ff;
  --blue-accent:#3fa9f5;
  --blue-accent-dim:#2c7cb8;

  --white:#ffffff;
  --off-white:#eaf3fb;
  --muted:#9fb3cc;

  --serif: 'Playfair Display', 'Noto Serif TC', Georgia, serif;
  --sans: 'Inter', 'Noto Sans TC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  --container: 1180px;
}

*,*::before,*::after{ box-sizing:border-box; }
html{ scroll-behavior:smooth; }

body{
  margin:0;
  background:var(--navy-950);
  color:var(--off-white);
  font-family:var(--sans);
  line-height:1.6;
  overflow-x:hidden;
}

img{ max-width:100%; display:block; }
a{ color:inherit; text-decoration:none; }

h1,h2,h3,h4{
  font-family:var(--serif);
  font-weight:700;
  margin:0 0 .4em;
  line-height:1.15;
  letter-spacing:.01em;
}

.container{
  max-width:var(--container);
  margin:0 auto;
  padding:0 32px;
}

.eyebrow{
  font-family:var(--sans);
  text-transform:uppercase;
  letter-spacing:.28em;
  font-size:.72rem;
  font-weight:600;
  color:var(--blue-400);
  display:inline-flex;
  align-items:center;
  gap:10px;
}
.eyebrow::before{
  content:"";
  width:26px;
  height:2px;
  background:var(--blue-accent);
  display:inline-block;
}

/* ---------------- Particle canvas (hero backdrop) ---------------- */
.particle-canvas{
  position:absolute;
  inset:0;
  width:100%;
  height:100%;
  z-index:1;
  pointer-events:none;
}

/* ---------------- Navbar ---------------- */
.site-header{
  position:fixed;
  top:0; left:0; right:0;
  z-index:100;
  padding:18px 0;
  transition:background .35s ease, padding .35s ease, box-shadow .35s ease;
}
.site-header.scrolled{
  background:rgba(5,13,26,.92);
  backdrop-filter:blur(10px);
  padding:12px 0;
  box-shadow:0 8px 30px rgba(0,0,0,.35);
  border-bottom:1px solid rgba(143,212,255,.12);
}
.nav-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
}
.brand{
  display:flex;
  align-items:center;
  gap:12px;
  font-family:var(--serif);
  font-size:1.15rem;
  font-weight:700;
  color:var(--white);
}
.brand img{ height:52px; width:auto; filter:drop-shadow(0 2px 10px rgba(0,0,0,.45)); }

.nav-links{
  display:flex;
  align-items:center;
  gap:36px;
  list-style:none;
  margin:0; padding:0;
}
.nav-links a{
  font-size:.86rem;
  text-transform:uppercase;
  letter-spacing:.14em;
  font-weight:600;
  color:var(--off-white);
  position:relative;
  padding:6px 0;
}
.nav-links a::after{
  content:"";
  position:absolute;
  left:0; bottom:0;
  width:0%;
  height:2px;
  background:var(--blue-accent);
  transition:width .3s ease;
}
.nav-links a:hover::after,
.nav-links a.active::after{ width:100%; }
.nav-links a.active{ color:var(--blue-300); }

.lang-toggle{
  display:flex;
  border:1px solid rgba(143,212,255,.35);
  border-radius:999px;
  overflow:hidden;
  font-size:.72rem;
  font-weight:700;
  letter-spacing:.06em;
}
.lang-toggle button{
  background:transparent;
  border:none;
  color:var(--muted);
  padding:7px 14px;
  cursor:pointer;
  font-family:var(--sans);
  font-weight:700;
  font-size:.72rem;
  letter-spacing:.06em;
  transition:background .25s ease, color .25s ease;
}
.lang-toggle button.active{
  background:var(--blue-accent);
  color:var(--navy-950);
}

.burger{
  display:none;
  flex-direction:column;
  gap:5px;
  background:none;
  border:none;
  cursor:pointer;
  padding:6px;
}
.burger span{
  width:26px; height:2px; background:var(--white); display:block;
}

/* ---------------- Hero ---------------- */
.hero{
  position:relative;
  min-height:100vh;
  display:flex;
  align-items:center;
  overflow:hidden;
  background:
    linear-gradient(180deg, rgba(5,13,26,.55) 0%, rgba(5,13,26,.75) 55%, var(--navy-950) 100%),
    var(--navy-900);
  background-size:cover;
  background-position:center;
}
.hero-bg{
  position:absolute; inset:0;
  background-size:cover;
  background-position:center;
  opacity:.42;
  z-index:0;
  transform:scale(1.05);
}
.hero-content{
  position:relative;
  z-index:2;
  width:100%;
  padding-top:110px;
  padding-bottom:80px;
}
.hero-bar{
  width:5px;
  height:64px;
  background:var(--blue-accent);
  margin-bottom:22px;
}
.hero h1{
  font-size:clamp(2.6rem, 7vw, 5.6rem);
  color:var(--white);
  margin-bottom:.25em;
}
.hero h1 .accent{ color:var(--blue-400); font-style:italic; }
.hero p.lead{
  max-width:560px;
  font-size:1.08rem;
  color:var(--muted);
  margin-bottom:34px;
}
.hero-actions{ display:flex; gap:16px; flex-wrap:wrap; }

.btn{
  display:inline-flex;
  align-items:center;
  gap:10px;
  padding:14px 28px;
  border-radius:2px;
  font-size:.82rem;
  font-weight:700;
  text-transform:uppercase;
  letter-spacing:.14em;
  border:1px solid transparent;
  cursor:pointer;
  transition:all .3s ease;
}
.btn-primary{
  background:var(--blue-accent);
  color:var(--navy-950);
}
.btn-primary:hover{ background:var(--blue-300); transform:translateY(-2px); }
.btn-outline{
  border-color:rgba(234,243,251,.4);
  color:var(--white);
}
.btn-outline:hover{
  border-color:var(--blue-accent);
  color:var(--blue-300);
  transform:translateY(-2px);
}

.scroll-cue{
  position:absolute;
  bottom:28px; left:50%;
  transform:translateX(-50%);
  z-index:2;
  color:var(--muted);
  font-size:.7rem;
  letter-spacing:.2em;
  text-transform:uppercase;
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:8px;
}
.scroll-cue .line{
  width:1px; height:38px;
  background:linear-gradient(var(--blue-accent), transparent);
  animation:pulseLine 2s ease-in-out infinite;
}
@keyframes pulseLine{
  0%,100%{ opacity:.3; }
  50%{ opacity:1; }
}

/* ---------------- Sections ---------------- */
section{ position:relative; padding:110px 0; }
.section-tight{ padding:70px 0; }
.section-alt{ background:var(--navy-900); }

.section-head{ max-width:680px; margin-bottom:56px; }
.section-head h2{ font-size:clamp(2rem,4vw,3rem); color:var(--white); }
.section-head p{ color:var(--muted); font-size:1.02rem; margin-top:14px; }

/* Reveal on scroll */
.reveal{
  opacity:0;
  transform:translateY(36px);
  transition:opacity .8s ease, transform .8s cubic-bezier(.2,.7,.3,1);
}
.reveal.in-view{ opacity:1; transform:translateY(0); }
.reveal-delay-1{ transition-delay:.1s; }
.reveal-delay-2{ transition-delay:.2s; }
.reveal-delay-3{ transition-delay:.3s; }

/* ---------------- Stat cards ---------------- */
.stat-row{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:2px;
  background:rgba(143,212,255,.14);
}
.stat-card{
  background:var(--navy-900);
  padding:38px 30px;
  text-align:left;
}
.stat-card .num{
  font-family:var(--serif);
  font-size:2.6rem;
  color:var(--blue-300);
  display:block;
  margin-bottom:6px;
}
.stat-card .label{
  font-size:.78rem;
  text-transform:uppercase;
  letter-spacing:.1em;
  color:var(--muted);
}

/* ---------------- Feature cards ---------------- */
.card-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:28px;
}
.feature-card{
  position:relative;
  overflow:hidden;
  border:1px solid rgba(143,212,255,.15);
  background:var(--navy-900);
  min-height:380px;
  display:flex;
  align-items:flex-end;
}
.feature-card .fc-bg{
  position:absolute; inset:0;
  background-size:cover;
  background-position:center;
  transition:transform .6s ease, filter .6s ease;
  filter:grayscale(35%) brightness(.65);
}
.feature-card:hover .fc-bg{ transform:scale(1.08); filter:grayscale(0%) brightness(.55); }
.feature-card::after{
  content:"";
  position:absolute; inset:0;
  background:linear-gradient(180deg, rgba(5,13,26,0) 30%, rgba(5,13,26,.92) 100%);
}
.fc-content{
  position:relative;
  z-index:2;
  padding:28px;
}
.fc-content .eyebrow{ margin-bottom:10px; }
.fc-content h3{ color:var(--white); font-size:1.5rem; margin-bottom:8px; }
.fc-content p{ color:var(--muted); font-size:.92rem; margin:0 0 14px; }
.fc-link{
  font-size:.76rem;
  text-transform:uppercase;
  letter-spacing:.14em;
  font-weight:700;
  color:var(--blue-300);
  display:inline-flex;
  align-items:center;
  gap:8px;
}
.fc-link .arrow{ transition:transform .3s ease; }
.feature-card:hover .fc-link .arrow{ transform:translateX(6px); }

/* ---------------- Story / editorial text ---------------- */
.story-block{
  display:grid;
  grid-template-columns:80px 1fr;
  gap:40px;
  max-width:840px;
  margin:0 auto 60px;
}
.story-block .bar{ width:5px; background:var(--blue-accent); height:100%; min-height:60px; }
.story-block p{
  font-size:1.12rem;
  color:var(--off-white);
}
.story-block p + p{ margin-top:1.3em; }
.drop-quote{
  font-family:var(--serif);
  font-style:italic;
  font-size:clamp(1.5rem,3vw,2.2rem);
  color:var(--blue-300);
  max-width:760px;
  margin:60px auto;
  text-align:center;
  line-height:1.4;
}

/* ---------------- Timeline ---------------- */
.timeline{
  position:relative;
  max-width:var(--container);
  margin:0 auto;
}
.timeline::before{
  content:"";
  position:absolute;
  left:50%;
  top:0; bottom:0;
  width:1px;
  background:rgba(143,212,255,.25);
  transform:translateX(-50%);
}
.tl-item{
  display:grid;
  grid-template-columns:minmax(0,1fr) 60px minmax(0,1fr);
  align-items:center;
  gap:0;
  margin-bottom:70px;
}
.tl-item .tl-dot{
  order:2;
  width:12px; height:12px;
  border-radius:50%;
  background:var(--blue-accent);
  margin:0 auto;
  box-shadow:0 0 0 6px rgba(63,169,245,.18);
}
.tl-media, .tl-text{ padding:0 30px; min-width:0; }
.tl-item .tl-media{ order:1; }
.tl-item .tl-text{ order:3; }
.tl-item:nth-child(even) .tl-media{ order:3; }
.tl-item:nth-child(even) .tl-text{ order:1; text-align:right; }
.tl-item .tl-media img{
  width:100%;
  height:auto;
  display:block;
  border:1px solid rgba(143,212,255,.2);
  filter:grayscale(15%);
}
.tl-year{
  font-family:var(--serif);
  font-size:2.2rem;
  color:var(--blue-300);
}
.tl-text p{ color:var(--muted); margin-top:8px; }

/* ---------------- Coach page ---------------- */
.coach-hero{
  display:grid;
  grid-template-columns:minmax(0,1fr) minmax(0,1.1fr);
  gap:60px;
  align-items:center;
}
.coach-photo{
  position:relative;
  min-width:0;
  border:1px solid rgba(143,212,255,.2);
}
.coach-photo img{
  width:100%;
  height:auto;
  display:block;
}
.coach-photo::before{
  content:"";
  position:absolute;
  top:-16px; left:-16px;
  right:16px; bottom:16px;
  border:2px solid var(--blue-accent);
  z-index:-1;
}
.coach-cred-grid{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:2px;
  background:rgba(143,212,255,.14);
  margin-top:40px;
}
.coach-cred{
  background:var(--navy-900);
  padding:26px;
}
.coach-cred h4{ color:var(--blue-300); font-size:1rem; margin-bottom:6px; }
.coach-cred p{ color:var(--muted); font-size:.88rem; margin:0; }

/* ---------------- Gallery ---------------- */
.gallery-nav{
  display:flex;
  gap:10px;
  flex-wrap:wrap;
  margin-bottom:50px;
}
.gallery-nav a{
  padding:10px 20px;
  border:1px solid rgba(143,212,255,.3);
  font-size:.78rem;
  text-transform:uppercase;
  letter-spacing:.1em;
  font-weight:600;
  color:var(--muted);
  transition:all .25s ease;
}
.gallery-nav a:hover{ color:var(--white); border-color:var(--blue-accent); }

.gallery-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:18px;
}
.gallery-grid.wide{ grid-template-columns:repeat(2,1fr); }
.g-item{
  position:relative;
  overflow:hidden;
  cursor:pointer;
  background:var(--navy-800);
  aspect-ratio:4/3;
}
.g-item img{
  width:100%; height:100%; object-fit:cover;
  transition:transform .6s ease, filter .5s ease;
  filter:grayscale(25%) brightness(.88);
}
.g-item:hover img{ transform:scale(1.07); filter:grayscale(0%) brightness(1); }
.g-item .g-cap{
  position:absolute; left:0; right:0; bottom:0;
  padding:14px 16px;
  background:linear-gradient(180deg, transparent, rgba(5,13,26,.9));
  color:var(--white);
  font-size:.82rem;
  font-weight:600;
  letter-spacing:.04em;
  transform:translateY(100%);
  transition:transform .35s ease;
}
.g-item:hover .g-cap{ transform:translateY(0); }

.gallery-grid .g-item:nth-child(1){ transition-delay:0s; }
.gallery-grid .g-item:nth-child(2){ transition-delay:.08s; }
.gallery-grid .g-item:nth-child(3){ transition-delay:.16s; }
.gallery-grid .g-item:nth-child(4){ transition-delay:.24s; }
.gallery-grid .g-item:nth-child(5){ transition-delay:.32s; }
.gallery-grid .g-item:nth-child(6){ transition-delay:.4s; }

.gallery-section-title{
  display:flex;
  align-items:baseline;
  gap:16px;
  margin:90px 0 30px;
}
.gallery-section-title h3{ color:var(--white); font-size:1.8rem; margin:0; }
.gallery-section-title span{ color:var(--muted); font-size:.85rem; }

/* Lightbox */
.lightbox{
  position:fixed; inset:0;
  background:rgba(5,13,26,.94);
  display:none;
  align-items:center;
  justify-content:center;
  z-index:1000;
  padding:40px;
}
.lightbox.open{ display:flex; }
.lightbox img{
  max-width:90vw;
  max-height:85vh;
  border:1px solid rgba(143,212,255,.3);
}
.lightbox-close{
  position:absolute;
  top:26px; right:32px;
  color:var(--white);
  font-size:2rem;
  cursor:pointer;
  background:none; border:none;
  line-height:1;
}

/* ---------------- Footer ---------------- */
.site-footer{
  border-top:1px solid rgba(143,212,255,.14);
  padding:56px 0 36px;
  background:var(--navy-950);
}
.footer-inner{
  display:flex;
  justify-content:space-between;
  align-items:center;
  flex-wrap:wrap;
  gap:24px;
}
.footer-brand{ display:flex; align-items:center; gap:12px; }
.footer-brand img{ height:40px; }
.footer-brand span{ font-family:var(--serif); color:var(--white); font-size:1.05rem; }
.footer-links{ display:flex; gap:28px; list-style:none; margin:0; padding:0; }
.footer-links a{ font-size:.82rem; color:var(--muted); letter-spacing:.04em; }
.footer-links a:hover{ color:var(--blue-300); }
.footer-copy{ color:var(--muted); font-size:.78rem; margin-top:26px; text-align:center; }

/* ---------------- i18n helper ---------------- */
html[lang="zh"] [data-en-only]{ display:none !important; }
html[lang="en"] [data-zh-only]{ display:none !important; }

/* ---------------- Preloader ---------------- */
body.preloading{ overflow:hidden; height:100vh; }
.preloader{
  position:fixed; inset:0;
  z-index:2000;
  background:var(--navy-950);
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:26px;
  transition:opacity .7s ease, visibility .7s ease;
}
.preloader-logo{
  height:64px;
  width:auto;
  animation:preloaderPulse 1.8s ease-in-out infinite;
}
@keyframes preloaderPulse{
  0%,100%{ opacity:.7; transform:scale(1); }
  50%{ opacity:1; transform:scale(1.05); }
}
.preloader-bar{
  width:220px;
  height:2px;
  background:rgba(143,212,255,.18);
  overflow:hidden;
  position:relative;
}
.preloader-bar-fill{
  position:absolute;
  left:0; top:0; bottom:0;
  width:0%;
  background:var(--blue-accent);
  transition:width .25s ease;
}
.preloader-pct{
  font-size:.72rem;
  letter-spacing:.2em;
  color:var(--muted);
  text-transform:uppercase;
}
.preloader.preloader-done{
  opacity:0;
  visibility:hidden;
  pointer-events:none;
}

/* ---------------- Ken Burns + cursor glow on hero ---------------- */
.hero{ --mx:50%; --my:40%; }
.hero-bg{
  animation:kenburns 22s ease-in-out infinite alternate;
  will-change:transform;
}
@keyframes kenburns{
  0%{ transform:scale(1.02) translate(0,0); }
  100%{ transform:scale(1.14) translate(-1.5%, -1.5%); }
}
.hero::before{
  content:"";
  position:absolute;
  inset:0;
  z-index:1;
  background:radial-gradient(420px circle at var(--mx) var(--my), rgba(143,212,255,.16), transparent 70%);
  pointer-events:none;
  transition:opacity .3s ease;
}

/* Feature card tilt smoothing */
.feature-card{
  transition:transform .15s ease-out, border-color .3s ease;
}

/* ---------------- Responsive ---------------- */
@media (max-width:900px){
  .nav-links{
    position:fixed;
    top:0; right:0;
    height:100vh;
    width:78%;
    max-width:320px;
    background:var(--navy-900);
    flex-direction:column;
    justify-content:center;
    align-items:flex-start;
    padding:40px;
    gap:26px;
    transform:translateX(100%);
    transition:transform .4s ease;
    box-shadow:-10px 0 40px rgba(0,0,0,.4);
    z-index:200;
  }
  .nav-links.open{ transform:translateX(0); }
  .burger{ display:flex; }
  .card-grid{ grid-template-columns:1fr; }
  .stat-row{ grid-template-columns:repeat(2,1fr); }
  .coach-hero{ grid-template-columns:1fr; }
  .gallery-grid{ grid-template-columns:repeat(2,1fr); }
  .tl-item{ grid-template-columns:1fr; }
  .tl-item .tl-dot{ display:none; }
  .tl-item:nth-child(even) .tl-text{ text-align:left; }
  .tl-item:nth-child(even) .tl-media{ order:0; }
  .tl-item:nth-child(even) .tl-text{ order:0; }
  .story-block{ grid-template-columns:1fr; }
  .timeline::before{ display:none; }
}
@media (max-width:560px){
  .gallery-grid{ grid-template-columns:1fr; }
  .stat-row{ grid-template-columns:1fr 1fr; }
}