:root{
  --bg-1: #0e1726;
  --bg-2: #16213e;
  --card: rgba(255,255,255,0.08);
  --text: #f7fbff;
  --muted: #d9e6f2;
  --accent: #88e0ef;
  --good: #a7f3d0;
  --bad: #fecaca;
  --shadow: 0 10px 30px rgba(0,0,0,.25);
}

*{ box-sizing: border-box; }
html, body{ height:100%; }
body{
  margin:0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, "Helvetica Neue", Arial;
  color: var(--text);
  background: radial-gradient(1200px 800px at 10% -10%, #1b3b5a, transparent 60%),
              radial-gradient(1200px 800px at 110% 10%, #23395d, transparent 60%),
              linear-gradient(135deg, var(--bg-1), var(--bg-2));
  background-attachment: fixed;
  animation: bgPulse 10s ease-in-out infinite alternate;
}

/* Themes toggled by JS */
.theme-clear{
  --bg-1:#0a2540; --bg-2:#0f3d5e;
}
.theme-clouds{
  --bg-1:#1a2742; --bg-2:#23324f;
}
.theme-rain{
  --bg-1:#0d1b2a; --bg-2:#16222f;
}
.theme-snow{
  --bg-1:#0b1b2a; --bg-2:#1b2a41;
}
.theme-thunder{
  --bg-1:#1b1b2b; --bg-2:#2b2b3b;
}
.theme-mist{
  --bg-1:#1c2433; --bg-2:#2b3647;
}

@keyframes bgPulse{
  from{ filter: saturate(1) brightness(1); }
  to{ filter: saturate(1.15) brightness(1.05); }
}

.app{
  min-height:100%;
  display:flex; flex-direction:column;
  gap: 2rem;
}

.topbar{
  display:flex; gap:1rem; align-items:center; justify-content:space-between;
  padding: 1rem clamp(1rem, 3vw, 2rem);
}

.brand{
  margin:0;
  font-size: clamp(1.1rem, 2.8vw, 1.6rem);
  letter-spacing:.5px;
  background: linear-gradient(90deg, #e0f2ff, #a2d9ff, #e0f2ff);
  -webkit-background-clip:text; background-clip:text;
  color: transparent;
}

.search{
  display:flex; gap:.5rem; align-items:center;
  background: var(--card);
  border: 1px solid rgba(255,255,255,.12);
  padding:.5rem;
  border-radius: 999px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(6px);
}
.search input{
  width:min(58vw, 320px);
  background: transparent;
  color: var(--text);
  border: none; outline:none;
  padding:.6rem 1rem;
  font-size: 1rem;
}
.search button{
  border: none; outline: none; cursor: pointer;
  background: rgba(255,255,255,.12);
  padding:.6rem .8rem;
  border-radius: 999px;
  transition: transform .2s ease, background .2s ease;
}
.search button:hover{ transform: translateY(-2px) scale(1.03); }
.search button:active{ transform: translateY(0) scale(.98); }

.content{
  width: min(1000px, 92vw);
  margin: 0 auto;
  display: grid;
  gap: 1.25rem;
}

.card{
  background: var(--card);
  border: 1px solid rgba(255,255,255,.12);
  border-radius: 24px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(8px);
}

.main-card{
  display:grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 1rem;
  padding: clamp(1rem, 3vw, 2rem);
}
@media (max-width: 780px){
  .main-card{ grid-template-columns: 1fr; text-align:center; }
}

.emoji-wrap{
  display:flex; align-items:center; justify-content:center;
  min-height: 220px;
}
.sticker{
  font-size: clamp(4rem, 18vw, 10rem);
  filter: drop-shadow(0 15px 30px rgba(0,0,0,.25));
  animation: floaty 3.8s ease-in-out infinite;
}
@keyframes floaty{
  0%,100%{ transform: translateY(0) rotate(-2deg); }
  50%{ transform: translateY(-12px) rotate(2deg); }
}

.info .city{
  margin: 0 0 .4rem 0;
  font-size: clamp(1.4rem, 4vw, 2rem);
}
.temp-line{
  display:flex; gap:1rem; align-items:baseline; flex-wrap:wrap;
}
.temp{
  font-size: clamp(2rem, 8vw, 4rem);
  font-weight: 700;
}
.desc{
  font-size: clamp(1rem, 3.2vw, 1.25rem);
  opacity: .9;
}

.meta-grid{
  margin-top: 1rem;
  display:grid;
  grid-template-columns: repeat(4, minmax(0,1fr));
  gap:.75rem;
}
@media (max-width: 640px){
  .meta-grid{ grid-template-columns: repeat(2, minmax(0,1fr)); }
}
.meta{
  background: rgba(255,255,255,.08);
  border: 1px solid rgba(255,255,255,.1);
  padding: .9rem;
  border-radius: 16px;
  display:flex; flex-direction:column; gap:.25rem;
  transition: transform .25s ease, background .25s ease;
}
.meta:hover{
  transform: translateY(-4px);
  background: rgba(255,255,255,.12);
}
.meta span{ font-size:.9rem; color: var(--muted); }
.meta strong{ font-size: 1.05rem; }

.status{
  min-height: 24px;
  padding: .25rem .5rem 1.25rem;
  text-align: center;
  color: var(--muted);
}

.footer{
  text-align:center;
  padding: 1rem;
  opacity:.8;
  font-size:.95rem;
}

/* Spinner */
.spinner{
  position: fixed; inset: 0;
  display:grid; place-items:center;
  background: rgba(0,0,0,.18);
  backdrop-filter: blur(2px);
  z-index: 50;
}
.spinner::after{
  content:"";
  width: 56px; height:56px; border-radius: 50%;
  border: 5px solid rgba(255,255,255,.3);
  border-top-color: white;
  animation: spin 1s linear infinite;
}
[hidden]{ display:none !important; }
@keyframes spin{ to{ transform: rotate(360deg); } }

/* Weather FX overlays */
.fx{
  position: fixed; inset:0; pointer-events:none; z-index: 10;
}
.fx-rain{
  background-image:
    linear-gradient( to bottom, rgba(255,255,255,.0), rgba(255,255,255,.0) 95%, rgba(255,255,255,.35) ),
    repeating-linear-gradient( 190deg, rgba(255,255,255,.0) 0 6px, rgba(255,255,255,.15) 6px 8px );
  background-size: 100% 100%, 20px 40px;
  animation: rainSlide .9s linear infinite;
  opacity:.25;
}
@keyframes rainSlide{
  0%{ background-position: 0 0, 0 0; }
  100%{ background-position: 0 0, -100px 100px; }
}

.fx-snow{
  background-image:
    radial-gradient(2px 2px at 10% 20%, rgba(255,255,255,.9) 99%, transparent 100%),
    radial-gradient(2px 2px at 30% 10%, rgba(255,255,255,.9) 99%, transparent 100%),
    radial-gradient(3px 3px at 50% 30%, rgba(255,255,255,.9) 99%, transparent 100%),
    radial-gradient(2px 2px at 70% 20%, rgba(255,255,255,.9) 99%, transparent 100%),
    radial-gradient(3px 3px at 90% 25%, rgba(255,255,255,.9) 99%, transparent 100%);
  background-repeat: repeat;
  animation: snowDrift 6s linear infinite;
  opacity:.25;
}
@keyframes snowDrift{
  0%{ background-position: 0 0, 0 0, 0 0, 0 0, 0 0; }
  100%{ background-position: 0 200px, 0 180px, 0 220px, 0 160px, 0 240px; }
}