/* ═══════════════════════════════════════
   kim.dev — Styles
   Light Blue + Navy Dark | Liquid Glass
═══════════════════════════════════════ */

:root {
  --bg:#e8f4f8;--bg-deep:#d6ecf3;--bg-nav:rgba(232,244,248,0.88);
  --ink:#0f2b3c;--ink-soft:#3d6478;--ink-muted:#7fa8ba;
  --accent:#5ab0d5;--accent-deep:#2e8cb8;--accent-glow:rgba(90,176,213,0.18);
  --card-bg:rgba(255,255,255,0.55);--card-border:rgba(90,176,213,0.18);
  --glass-bg:rgba(255,255,255,0.35);--glass-border:rgba(255,255,255,0.55);--glass-shine:rgba(255,255,255,0.45);
  --divider:rgba(90,176,213,0.15);
  --track-active-bg:rgba(90,176,213,0.12);--track-active-border:rgba(90,176,213,0.28);--track-hover-bg:rgba(255,255,255,0.5);
  --progress-track:rgba(15,43,60,0.06);
  --ctrl-play-bg:#0f2b3c;--ctrl-play-color:#e8f4f8;--ctrl-play-hover:#2e8cb8;
  --volume-track:rgba(15,43,60,0.08);--volume-thumb:#5ab0d5;
  --link-bg:rgba(255,255,255,0.45);--link-border:rgba(90,176,213,0.12);
  --link-hover-bg:rgba(90,176,213,0.08);--link-hover-border:rgba(90,176,213,0.22);
  --avatar-from:#5ab0d5;--avatar-to:#2e8cb8;--avatar-shadow:rgba(90,176,213,0.3);
  --shadow-md:0 4px 16px rgba(15,43,60,0.06);
  --radius:20px;--radius-sm:12px;
  /* Welcome-specific */
  --w-panel-bg:rgba(255,255,255,0.18);
  --w-panel-border:rgba(255,255,255,0.35);
  --w-panel-shadow:0 8px 32px rgba(15,43,60,0.1),inset 0 1px 0 rgba(255,255,255,0.4);
  --w-text:#0f2b3c;
  --w-text-soft:rgba(15,43,60,0.5);
  --w-text-muted:rgba(15,43,60,0.35);
  --w-btn-border:rgba(15,43,60,0.15);
  --w-btn-bg:rgba(255,255,255,0.15);
  --w-btn-shine:rgba(255,255,255,0.3);
  --w-btn-hover-shadow:0 8px 30px rgba(90,176,213,0.2);
  --w-toggle-bg:rgba(255,255,255,0.2);
  --w-toggle-icon:rgba(15,43,60,0.5);
}

[data-theme="dark"]{
  --bg:#0b1929;--bg-deep:#0f2035;--bg-nav:rgba(11,25,41,0.92);
  --ink:#dce8f0;--ink-soft:#8fadbf;--ink-muted:#4d7a94;
  --accent:#5ab0d5;--accent-deep:#7ec8e8;--accent-glow:rgba(90,176,213,0.12);
  --card-bg:rgba(255,255,255,0.05);--card-border:rgba(90,176,213,0.12);
  --glass-bg:rgba(255,255,255,0.06);--glass-border:rgba(255,255,255,0.1);--glass-shine:rgba(255,255,255,0.1);
  --divider:rgba(90,176,213,0.1);
  --track-active-bg:rgba(90,176,213,0.1);--track-active-border:rgba(90,176,213,0.2);--track-hover-bg:rgba(255,255,255,0.04);
  --progress-track:rgba(255,255,255,0.08);
  --ctrl-play-bg:#5ab0d5;--ctrl-play-color:#0b1929;--ctrl-play-hover:#7ec8e8;
  --volume-track:rgba(255,255,255,0.1);--volume-thumb:#5ab0d5;
  --link-bg:rgba(255,255,255,0.05);--link-border:rgba(90,176,213,0.1);
  --link-hover-bg:rgba(90,176,213,0.08);--link-hover-border:rgba(90,176,213,0.2);
  --avatar-from:#5ab0d5;--avatar-to:#3494bf;--avatar-shadow:rgba(90,176,213,0.2);
  --shadow-md:0 4px 16px rgba(0,0,0,0.2);
  --w-panel-bg:rgba(11,25,41,0.35);
  --w-panel-border:rgba(90,176,213,0.12);
  --w-panel-shadow:0 8px 32px rgba(0,0,0,0.3),inset 0 1px 0 rgba(255,255,255,0.05);
  --w-text:#dce8f0;
  --w-text-soft:rgba(220,232,240,0.5);
  --w-text-muted:rgba(220,232,240,0.3);
  --w-btn-border:rgba(90,176,213,0.2);
  --w-btn-bg:rgba(255,255,255,0.06);
  --w-btn-shine:rgba(255,255,255,0.1);
  --w-btn-hover-shadow:0 8px 30px rgba(90,176,213,0.15);
  --w-toggle-bg:rgba(255,255,255,0.08);
  --w-toggle-icon:rgba(220,232,240,0.6);
}

*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:'DM Sans',-apple-system,BlinkMacSystemFont,sans-serif;
  background:var(--bg);color:var(--ink);min-height:100vh;overflow-x:hidden;
  line-height:1.65;-webkit-font-smoothing:antialiased;
  transition:background .5s ease,color .4s ease;
}

/* ═══════ WELCOME + SHADER ═══════ */
.welcome{
  position:fixed;inset:0;z-index:1000;display:flex;flex-direction:column;
  justify-content:center;align-items:center;
  transition:opacity .9s cubic-bezier(.4,0,0,1),transform .9s cubic-bezier(.4,0,0,1);
}
.welcome.leaving{opacity:0;transform:scale(1.03);pointer-events:none}

#shaderCanvas{position:absolute;inset:0;width:100%;height:100%;display:block;z-index:0}

.welcome-overlay{
  position:relative;z-index:2;text-align:center;
  opacity:0;transform:translateY(30px);
  animation:fadeUp .8s cubic-bezier(.16,1,.3,1) .3s forwards;
}

.welcome-panel{
  background:var(--w-panel-bg);
  backdrop-filter:blur(24px) saturate(150%);-webkit-backdrop-filter:blur(24px) saturate(150%);
  border:1px solid var(--w-panel-border);
  border-radius:20px;padding:48px 56px;max-width:520px;margin:0 auto;
  box-shadow:var(--w-panel-shadow);
  transition:background .5s ease,border-color .5s ease,box-shadow .5s ease;
}

.welcome-label{
  font-family:'DM Mono',monospace;font-size:.7rem;
  letter-spacing:5px;text-transform:uppercase;color:var(--w-text-muted);margin-bottom:16px;
}
.welcome-title{
  font-family:'Playfair Display',serif;
  font-size:clamp(2.8rem,7vw,5rem);font-weight:400;
  line-height:1.1;color:var(--w-text);margin-bottom:8px;
}
.welcome-title em{font-style:italic;color:var(--accent-deep)}
.welcome-title .dot{color:var(--accent)}
.welcome-sub{font-size:.95rem;color:var(--w-text-soft);font-weight:300;margin-bottom:12px}

.status-pill{display:inline-flex;align-items:center;gap:6px;margin-bottom:36px}
.status-dot{position:relative;display:flex;align-items:center;justify-content:center;width:12px;height:12px}
.status-dot .ping{position:absolute;width:100%;height:100%;border-radius:50%;background:#22c55e;opacity:.75;animation:ping 1.5s cubic-bezier(0,0,.2,1) infinite}
.status-dot .core{position:relative;width:8px;height:8px;border-radius:50%;background:#22c55e}
@keyframes ping{75%,100%{transform:scale(2);opacity:0}}
.status-text{font-size:.75rem;color:#22c55e;letter-spacing:.5px}

.glass-btn{
  position:relative;display:inline-flex;align-items:center;justify-content:center;
  padding:14px 44px;font-family:'DM Sans',sans-serif;font-size:.82rem;font-weight:500;
  letter-spacing:2.5px;text-transform:uppercase;color:var(--w-text);background:transparent;
  border:1px solid var(--w-btn-border);cursor:pointer;border-radius:100px;
  transition:all .35s cubic-bezier(.16,1,.3,1);
  opacity:0;animation:fadeUp .6s cubic-bezier(.16,1,.3,1) .8s forwards;overflow:hidden;
}
.glass-btn::before{
  content:'';position:absolute;inset:0;border-radius:inherit;
  background:var(--w-btn-bg);
  backdrop-filter:blur(12px) saturate(150%);-webkit-backdrop-filter:blur(12px) saturate(150%);
  z-index:-1;
  box-shadow:inset 0 1px 0 var(--w-btn-shine),inset 0 -1px 0 rgba(0,0,0,0.05);
}
.glass-btn::after{
  content:'';position:absolute;top:0;left:-100%;width:100%;height:100%;
  background:linear-gradient(90deg,transparent,var(--w-btn-shine),transparent);transition:left .5s ease;
}
.glass-btn:hover::after{left:100%}
.glass-btn:hover{transform:translateY(-2px);box-shadow:var(--w-btn-hover-shadow);border-color:var(--accent)}
.glass-btn:active{transform:translateY(0) scale(.98)}

.welcome-toggle{position:absolute;top:28px;right:28px;z-index:10}

/* ═══════ THEME TOGGLE ═══════ */
.welcome .theme-toggle{
  background:var(--w-toggle-bg);color:var(--w-toggle-icon);
}
.theme-toggle{
  width:44px;height:44px;border-radius:50%;border:none;cursor:pointer;
  display:flex;align-items:center;justify-content:center;
  transition:all .3s cubic-bezier(.16,1,.3,1);backdrop-filter:blur(8px);
}
.theme-toggle:hover{background:var(--accent-glow);color:var(--accent-deep);transform:scale(1.08)}
.theme-toggle:active{transform:scale(.94)}
.theme-toggle svg{width:18px;height:18px;transition:opacity .3s}
.theme-toggle .icon-sun{display:none}
[data-theme="dark"] .theme-toggle .icon-moon{display:none}
[data-theme="dark"] .theme-toggle .icon-sun{display:block}

/* ═══════ SITE ═══════ */
.site{display:none}.site.active{display:block}

.nav{position:sticky;top:0;z-index:100;padding:16px 0;background:var(--bg-nav);backdrop-filter:blur(20px) saturate(180%);border-bottom:1px solid var(--divider);transition:background .5s ease,border-color .5s ease}
.nav-inner{max-width:1000px;margin:0 auto;padding:0 24px;display:flex;justify-content:space-between;align-items:center}
.nav-logo{font-family:'Playfair Display',serif;font-size:1.2rem;color:var(--ink);text-decoration:none}
.nav-logo .dot{color:var(--accent)}
.nav-right{display:flex;align-items:center;gap:28px}
.nav-links{display:flex;gap:32px;list-style:none}
.nav-links a{font-size:.82rem;font-weight:400;letter-spacing:1px;text-transform:uppercase;color:var(--ink-soft);text-decoration:none;transition:color .3s;position:relative}
.nav-links a::after{content:'';position:absolute;bottom:-4px;left:0;width:0;height:1.5px;background:var(--accent);transition:width .3s cubic-bezier(.16,1,.3,1)}
.nav-links a:hover{color:var(--ink)}
.nav-links a:hover::after{width:100%}

.site .theme-toggle{background:rgba(15,43,60,0.08);color:#3d6478}
[data-theme="dark"] .site .theme-toggle{background:rgba(255,255,255,0.08);color:#8fadbf}

.section{max-width:1000px;margin:0 auto;padding:80px 24px}
.section-label{font-family:'DM Mono',monospace;font-size:.68rem;letter-spacing:4px;text-transform:uppercase;color:var(--ink-muted);margin-bottom:12px}
.section-title{font-family:'Playfair Display',serif;font-size:clamp(1.8rem,4vw,2.6rem);font-weight:400;color:var(--ink);margin-bottom:40px;line-height:1.2}

.hero{padding-top:100px;padding-bottom:60px;text-align:center}
.hero-greeting{font-family:'DM Mono',monospace;font-size:.72rem;letter-spacing:4px;text-transform:uppercase;color:var(--accent-deep);margin-bottom:20px;opacity:0;animation:fadeUp .6s cubic-bezier(.16,1,.3,1) .1s forwards}
.hero-name{font-family:'Playfair Display',serif;font-size:clamp(2.4rem,6vw,4.2rem);font-weight:400;line-height:1.15;margin-bottom:16px;opacity:0;animation:fadeUp .6s cubic-bezier(.16,1,.3,1) .25s forwards}
.hero-name em{font-style:italic;color:var(--accent-deep)}
.hero-desc{font-size:1.05rem;color:var(--ink-soft);font-weight:300;max-width:520px;margin:0 auto 40px;opacity:0;animation:fadeUp .6s cubic-bezier(.16,1,.3,1) .4s forwards}
.hero-tags{display:flex;justify-content:center;gap:12px;flex-wrap:wrap;opacity:0;animation:fadeUp .6s cubic-bezier(.16,1,.3,1) .55s forwards}
.tag{padding:6px 16px;font-size:.75rem;font-weight:400;letter-spacing:.5px;color:var(--ink-soft);background:var(--card-bg);border:1px solid var(--card-border);border-radius:100px;backdrop-filter:blur(8px);transition:background .4s,border-color .4s,color .4s}

.divider{max-width:1000px;margin:0 auto;padding:0 24px}
.divider-line{height:1px;background:linear-gradient(90deg,transparent,var(--divider),transparent)}

/* ═══════ MUSIC ═══════ */
.music-section{background:var(--bg-deep);transition:background .5s ease}
.player-card{background:var(--card-bg);border:1px solid var(--card-border);border-radius:var(--radius);padding:32px;box-shadow:var(--shadow-md);backdrop-filter:blur(20px);transition:background .5s,border-color .5s,box-shadow .5s}
.track-list{display:flex;flex-direction:column;gap:8px;margin-bottom:28px}
.track-item{display:flex;align-items:center;gap:14px;padding:14px 18px;border-radius:var(--radius-sm);cursor:pointer;transition:all .3s cubic-bezier(.16,1,.3,1);border:1px solid transparent}
.track-item:hover{background:var(--track-hover-bg);border-color:var(--card-border);transform:translateX(4px)}
.track-item.active{background:var(--track-active-bg);border-color:var(--track-active-border)}
.track-num{font-family:'DM Mono',monospace;font-size:.72rem;color:var(--ink-muted);width:20px;text-align:center}
.track-item.active .track-num{color:var(--accent-deep)}
.track-eq{display:none;gap:2px;align-items:flex-end;height:14px}
.track-item.active.playing .track-eq{display:flex}
.track-item.active.playing .track-num-text{display:none}
.eq-bar{width:2.5px;background:var(--accent);border-radius:2px;animation:eqBounce .8s ease-in-out infinite alternate}
.eq-bar:nth-child(1){height:6px;animation-delay:0s}
.eq-bar:nth-child(2){height:10px;animation-delay:.15s}
.eq-bar:nth-child(3){height:4px;animation-delay:.3s}
.eq-bar:nth-child(4){height:8px;animation-delay:.1s}
@keyframes eqBounce{0%{transform:scaleY(.4)}100%{transform:scaleY(1)}}
.track-info{flex:1}.track-name{font-size:.9rem;font-weight:500;color:var(--ink)}.track-artist{font-size:.78rem;color:var(--ink-muted);margin-top:2px}

.now-playing-bar{padding:24px 0 0;border-top:1px solid var(--divider)}
.np-title{font-size:.72rem;font-weight:500;letter-spacing:2px;text-transform:uppercase;color:var(--ink-muted);margin-bottom:10px}
.np-track{font-family:'Playfair Display',serif;font-size:1.2rem;color:var(--ink);margin-bottom:18px}
.progress-wrap{width:100%;height:4px;background:var(--progress-track);border-radius:10px;cursor:pointer;margin-bottom:8px;overflow:hidden}
.progress-fill{height:100%;width:0%;background:linear-gradient(90deg,var(--accent),var(--accent-deep));border-radius:10px;transition:width .15s linear}
.time-row{display:flex;justify-content:space-between;font-family:'DM Mono',monospace;font-size:.7rem;color:var(--ink-muted);margin-bottom:20px}

.controls{display:flex;align-items:center;justify-content:center;gap:20px}
.ctrl-btn{display:flex;align-items:center;justify-content:center;width:44px;height:44px;border:none;border-radius:50%;cursor:pointer;transition:all .25s cubic-bezier(.16,1,.3,1);background:transparent;color:var(--ink-soft)}
.ctrl-btn:hover{background:var(--accent-glow);color:var(--ink)}
.ctrl-btn--play{width:56px;height:56px;background:var(--ctrl-play-bg);color:var(--ctrl-play-color);box-shadow:0 4px 16px rgba(0,0,0,.12)}
.ctrl-btn--play:hover{background:var(--ctrl-play-hover);color:#fff;transform:scale(1.06)}
.ctrl-btn--play:active{transform:scale(.96)}
.ctrl-btn svg{width:20px;height:20px}.ctrl-btn--play svg{width:22px;height:22px}

.volume-row{display:flex;align-items:center;gap:12px;margin-top:20px;padding-top:16px;border-top:1px solid var(--divider)}
.volume-row svg{width:16px;height:16px;color:var(--ink-muted);flex-shrink:0}
.volume-slider{-webkit-appearance:none;appearance:none;flex:1;height:3px;background:var(--volume-track);border-radius:10px;outline:none}
.volume-slider::-webkit-slider-thumb{-webkit-appearance:none;width:14px;height:14px;border-radius:50%;background:var(--volume-thumb);cursor:pointer;box-shadow:0 1px 4px rgba(0,0,0,.18);transition:transform .2s}
.volume-slider::-webkit-slider-thumb:hover{transform:scale(1.2)}
.volume-slider::-moz-range-thumb{width:14px;height:14px;border-radius:50%;background:var(--volume-thumb);cursor:pointer;border:none}
.volume-val{font-family:'DM Mono',monospace;font-size:.7rem;color:var(--ink-muted);width:32px;text-align:right}

/* ═══════ TILT CARD ═══════ */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center}
.contact-text h3{font-family:'Playfair Display',serif;font-size:1.6rem;font-weight:400;margin-bottom:12px}
.contact-text p{color:var(--ink-soft);font-size:.92rem;font-weight:300;line-height:1.7}

.tilt-wrap{perspective:800px;display:flex;justify-content:center}
.tilt-card{
  position:relative;width:340px;padding:36px 32px;border-radius:var(--radius);
  background:linear-gradient(145deg,var(--glass-bg),var(--card-bg));
  backdrop-filter:blur(24px) saturate(180%);border:1px solid var(--glass-border);
  box-shadow:0 0 6px rgba(0,0,0,.02),0 4px 20px rgba(0,0,0,.06),inset 0 1px 0 var(--glass-shine),inset 0 -1px 0 rgba(0,0,0,.03);
  transition:transform .15s ease-out,box-shadow .3s ease,background .5s,border-color .5s;
  transform-style:preserve-3d;will-change:transform;
}
.tilt-card:hover{box-shadow:0 0 6px rgba(0,0,0,.02),0 12px 40px rgba(0,0,0,.12),inset 0 1px 0 var(--glass-shine),inset 0 -1px 0 rgba(0,0,0,.03)}
.tilt-card-shine{position:absolute;inset:0;border-radius:inherit;pointer-events:none;opacity:0;transition:opacity .3s}
.tilt-card:hover .tilt-card-shine{opacity:1}

.card-header{display:flex;align-items:center;gap:16px;margin-bottom:20px}
.card-avatar{width:52px;height:52px;border-radius:50%;flex-shrink:0;background:linear-gradient(135deg,var(--avatar-from),var(--avatar-to));display:flex;align-items:center;justify-content:center;color:#fff;font-family:'Playfair Display',serif;font-size:1.2rem;box-shadow:0 4px 12px var(--avatar-shadow)}
.card-header-info{display:flex;flex-direction:column}
.card-name{font-family:'Playfair Display',serif;font-size:1.15rem;line-height:1.3}
.card-role{font-size:.76rem;color:var(--ink-muted);margin-top:2px}
.card-meta{display:flex;gap:16px;margin-bottom:22px;padding:12px 0;border-top:1px solid var(--divider);border-bottom:1px solid var(--divider)}
.card-meta-item{display:flex;flex-direction:column;flex:1}
.card-meta-label{font-family:'DM Mono',monospace;font-size:.6rem;letter-spacing:1.5px;text-transform:uppercase;color:var(--ink-muted);margin-bottom:2px}
.card-meta-value{font-size:.82rem;font-weight:500;color:var(--ink)}
.card-links{display:flex;flex-direction:column;gap:8px}
.card-link{display:flex;align-items:center;gap:10px;padding:10px 14px;border-radius:10px;background:var(--link-bg);border:1px solid var(--link-border);text-decoration:none;color:var(--ink);font-size:.8rem;transition:all .25s cubic-bezier(.16,1,.3,1)}
.card-link:hover{background:var(--link-hover-bg);border-color:var(--link-hover-border);transform:translateX(4px)}
.card-link svg{width:15px;height:15px;color:var(--accent-deep);flex-shrink:0}
.card-link-text{display:flex;flex-direction:column}
.card-link-label{font-size:.65rem;color:var(--ink-muted);letter-spacing:.5px;text-transform:uppercase;line-height:1}
.card-link-value{font-size:.82rem;color:var(--ink);margin-top:2px}

.footer{text-align:center;padding:40px 24px;font-size:.78rem;color:var(--ink-muted);border-top:1px solid var(--divider);transition:border-color .5s}

.reveal{opacity:0;transform:translateY(30px);transition:opacity .7s cubic-bezier(.16,1,.3,1),transform .7s cubic-bezier(.16,1,.3,1)}
.reveal.visible{opacity:1;transform:translateY(0)}
@keyframes fadeUp{from{opacity:0;transform:translateY(30px)}to{opacity:1;transform:translateY(0)}}

@media(max-width:700px){
  .nav-links{gap:20px}.nav-links a{font-size:.72rem}.nav-right{gap:16px}
  .section{padding:56px 20px}
  .contact-grid{grid-template-columns:1fr;gap:32px;text-align:center}
  .tilt-card{width:100%;max-width:340px}
  .hero{padding-top:64px}.welcome-toggle{top:16px;right:16px}
  .welcome-panel{padding:36px 28px;margin:0 20px}
}