/* ---------- base ---------- */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html,body{height:100%}
body{
  font-family:"Helvetica Neue","Inter",Arial,sans-serif;
  font-size:12px;
  color:var(--fg);
  background-color:var(--bg);
  -webkit-font-smoothing:antialiased;
  transition:background-color 900ms ease, color 900ms ease;
  letter-spacing:.01em;
  overflow-x:hidden;
}
a{color:inherit;text-decoration:none}
sup{font-size:.7em;vertical-align:super}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
img{display:block;max-width:100%;height:auto}

/* ---------- theme (clear / rain) ---------- */
:root,
body.sky-clear{
  --bg:#ffffff;
  --tile:#f4f3ef;
  --fg:#111111;
  --muted:#6b6b6b;
  --line:#e5e3dd;
  --hunter:#3e5843;
}
body.sky-rain{
  --bg:#0f1613;
  --tile:#161d1a;
  --fg:#e6ece7;
  --muted:#8b9590;
  --line:#1f2824;
  --hunter:#8fb090;
}

/* ---------- canvas rain ---------- */
#rain{
  position:fixed;inset:0;pointer-events:none;
  z-index:5;opacity:0;
  transition:opacity 900ms ease;
}
body.sky-rain #rain{opacity:1}

/* lightning flash */
.lightning{
  position:fixed;inset:0;pointer-events:none;z-index:4;
  background:#fff;opacity:0;
}
.lightning.flash{animation:lightning 700ms ease}
@keyframes lightning{
  0%,100%{opacity:0}
  3%{opacity:.7}
  8%{opacity:.1}
  12%{opacity:.55}
  20%{opacity:0}
}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:20;
  display:grid;
  grid-template-columns:auto 1fr auto auto;
  align-items:center;
  gap:48px;
  padding:18px 28px;
  background-color:var(--bg);
  border-bottom:1px solid var(--line);
  transition:background-color 900ms ease,border-color 900ms ease;
}
.brand{
  font-family:Georgia, "Times New Roman", serif;
  font-weight:700;
  font-size:22px;
  letter-spacing:.22em;
  color:var(--hunter);
  transition:color 900ms ease;
}
.main-nav,.utility-nav,.account-nav{display:flex;gap:24px;font-size:12px}
.main-nav{justify-self:start;text-transform:uppercase;letter-spacing:.08em}
.utility-nav{text-transform:uppercase;letter-spacing:.08em}
.account-nav{margin-left:12px;text-transform:uppercase;letter-spacing:.08em}

/* ---------- layout ---------- */
.layout{
  position:relative;z-index:1;
  display:grid;
  grid-template-columns:200px 1fr;
  gap:28px;
  padding:22px 28px 80px;
}
.sidebar{padding-top:8px;font-size:12px}
.nav-list{list-style:none}
.nav-list + .nav-list{margin-top:18px}
.nav-list li{padding:3px 0}
.nav-list .group{color:var(--muted);margin-bottom:4px;text-transform:uppercase;letter-spacing:.1em;font-size:11px}
.nav-list a{color:var(--fg);opacity:.8}
.nav-list a:hover{opacity:1}
.nav-list a.active{font-weight:600;opacity:1}
.nav-list.category li:not(.group){padding-left:10px}

/* ---------- head ---------- */
.content-head{
  display:flex;align-items:center;justify-content:space-between;
  padding:4px 0 18px;
}
.page-title{
  font-family:Georgia,"Times New Roman",serif;
  font-weight:400;font-size:15px;
}
.page-title sup{color:var(--muted);font-size:10px;margin-left:4px}
.toolbar{display:flex;align-items:center;gap:26px}
.filter-btn{font-size:12px;text-transform:uppercase;letter-spacing:.08em}
.view-switch{display:flex;align-items:center;gap:6px;font-size:12px;color:var(--muted);text-transform:uppercase;letter-spacing:.08em}
.view-switch button{padding:0 4px;color:var(--muted)}
.view-switch button.active{color:var(--fg)}

/* ---------- rain cloud toggle ---------- */
.weather-toggle-wrap{display:flex;align-items:center;gap:10px}
.weather-label{font-size:12px;text-transform:uppercase;letter-spacing:.08em}
.weather-toggle{
  position:relative;
  width:54px;height:28px;border-radius:999px;
  background:#d5d2c9;
  transition:background 500ms ease, box-shadow 500ms ease;
}
.weather-toggle .cloud{
  position:absolute;top:4px;left:4px;
  width:20px;height:20px;
  transition:left 400ms cubic-bezier(.5,.2,.2,1), filter 500ms ease;
}
.puff{
  position:absolute;background:#fff;border-radius:50%;
  box-shadow:0 1px 2px rgba(0,0,0,.2);
  transition:background 500ms ease;
}
.puff.p1{width:12px;height:12px;top:6px;left:-2px}
.puff.p2{width:16px;height:16px;top:2px;left:4px}
.puff.p3{width:10px;height:10px;top:7px;left:14px}

.drop{
  position:absolute;width:2px;height:5px;border-radius:2px;
  background:#9bd1f0;opacity:0;
}
.drop.d1{top:16px;left:3px}
.drop.d2{top:18px;left:9px}
.drop.d3{top:17px;left:15px}

body.sky-rain .weather-toggle{
  background:linear-gradient(180deg,#3e5843,#1f2e25);
  box-shadow:inset 0 1px 4px rgba(0,0,0,.4);
}
body.sky-rain .weather-toggle .cloud{left:30px;filter:drop-shadow(0 2px 3px rgba(0,0,0,.4))}
body.sky-rain .puff{background:#c0cad3}
body.sky-rain .drop{animation:toggle-drop 1200ms linear infinite}
body.sky-rain .drop.d2{animation-delay:.2s}
body.sky-rain .drop.d3{animation-delay:.4s}
@keyframes toggle-drop{
  0%{transform:translateY(0);opacity:0}
  20%{opacity:1}
  80%{opacity:1}
  100%{transform:translateY(10px);opacity:0}
}

/* ---------- grid ---------- */
.grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.card{display:flex;flex-direction:column;gap:10px}
.tile{
  position:relative;
  aspect-ratio:1/1;
  background-color:var(--tile);
  overflow:hidden;
  transition:background-color 900ms ease, box-shadow 900ms ease;
}
.tile img{
  position:absolute;inset:0;
  width:100%;height:100%;
  object-fit:contain;
  padding:8%;
  transition:filter 900ms ease, transform 700ms cubic-bezier(.3,.2,.2,1), opacity 700ms ease;
}
.card:hover .tile img{transform:scale(1.04)}

/* closed/open crossfade */
.tile img.open{opacity:0}
body.sky-rain .tile img.closed{opacity:0}
body.sky-rain .tile img.open{opacity:1}

/* wet sheen overlay — only visible when rain */
.wet{
  position:absolute;inset:0;pointer-events:none;
  opacity:0;
  background:
    radial-gradient(circle at 30% 40%, rgba(255,255,255,.08) 0 2px, transparent 3px),
    radial-gradient(circle at 55% 60%, rgba(255,255,255,.08) 0 1.5px, transparent 3px),
    radial-gradient(circle at 70% 30%, rgba(255,255,255,.08) 0 2px, transparent 3px),
    radial-gradient(circle at 20% 70%, rgba(255,255,255,.08) 0 1.5px, transparent 3px),
    radial-gradient(circle at 80% 75%, rgba(255,255,255,.08) 0 2px, transparent 3px),
    linear-gradient(180deg, rgba(0,0,0,0) 60%, rgba(20,30,30,.35) 100%);
  transition:opacity 900ms ease;
}
body.sky-rain .wet{opacity:1}

/* dim images in rain */
body.sky-rain .tile img{
  filter:brightness(.72) saturate(.95) contrast(1.05);
}

/* puddle at tile bottom */
.puddle{
  position:absolute;left:12%;right:12%;bottom:4%;
  height:6%;border-radius:50%;
  background:radial-gradient(ellipse at center, rgba(180,210,225,.55), transparent 70%);
  opacity:0;transform:scaleX(.3);
  transition:opacity 900ms ease 200ms, transform 900ms ease 200ms;
  pointer-events:none;
  z-index:2;
}
.puddle.wide{left:6%;right:6%;height:4%}
body.sky-rain .puddle{opacity:1;transform:scaleX(1)}

.meta{font-size:11px;line-height:1.5}
.meta .name{color:var(--fg);letter-spacing:.01em}
.meta .price{color:var(--muted);margin-top:2px}

/* cursor ripple */
.ripple{
  position:fixed;pointer-events:none;z-index:6;
  width:10px;height:10px;border-radius:50%;
  border:1px solid rgba(200,220,240,.8);
  transform:translate(-50%,-50%);
  animation:ripple 800ms ease-out forwards;
  mix-blend-mode:screen;
}
@keyframes ripple{
  0%{width:4px;height:4px;opacity:.9}
  100%{width:40px;height:40px;opacity:0}
}

@media (max-width: 1100px){.grid{grid-template-columns:repeat(3,1fr)}}
@media (max-width: 820px){
  .layout{grid-template-columns:1fr;padding:16px}
  .sidebar{display:none}
  .grid{grid-template-columns:repeat(2,1fr)}
  .site-header{grid-template-columns:1fr auto;gap:16px}
  .main-nav,.utility-nav{display:none}
}