:root{
  --white: #ffffff;
  --muted: rgba(255,255,255,0.85);
  --glass-border: rgba(255,255,255,0.18);
  --glass-bg: rgba(255,255,255,0.06);
  --accent-blue: rgba(173,216,230,0.08);
  --accent-blue-strong: rgba(135,206,250,0.12);
  --card-radius: 14px;
  --shadow: 0 8px 30px rgba(0,0,0,0.25);
  --glass-blur: blur(12px);
}


*{margin:0;padding:0;box-sizing:border-box}
html,body{height:100%}
body{
  font-family: "Poppins", sans-serif;
  color: var(--muted);
  background: url("img/cloud.jpg") no-repeat center center/cover;
  background-attachment: fixed;
  -webkit-font-smoothing:antialiased;
  transition: all 0.6s ease;
  overflow-x:hidden;
  padding: 40px 24px;
  display:flex;
  justify-content:center;
  align-items:flex-start;
}


body::after{
  content:"";
  position:fixed;
  left:0;right:0;bottom:0;
  height:180px;
  pointer-events:none;
  background: linear-gradient(transparent, rgba(0,0,0,0.28));
}


body.night-mode{
  background: url("img/night.jpg") no-repeat center center/cover;
  background-attachment: fixed;
  background-color: rgb(34,34,40);
  color: #e9eef6;
}


.theme-toggle{
  position:fixed;
  right:22px;
  top:18px;
  z-index:40;
  font-size:22px;
  cursor:pointer;
  color:var(--white);
  transition:transform .35s ease;
  user-select:none;
}
.theme-toggle:hover{transform:rotate(180deg) scale(1.12)}


.app-wrapper{
  width:100%;
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:18px;
}


.app-container{
  width:85%;
  max-width:980px;
  display:grid;
  grid-template-columns: 1fr 1fr;
  gap:22px;
  align-items:start;
  justify-items:center;
  padding: 24px;
  border-radius: 18px;
  position:relative;
  background: linear-gradient(135deg, var(--glass-bg), var(--accent-blue));
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  box-shadow: var(--shadow);
  transition: transform .25s ease, box-shadow .25s ease;
}
.app-container:hover{ transform: translateY(-3px); box-shadow: 0 12px 40px rgba(0,0,0,0.35) }


header{ grid-column: 1 / -1; text-align:center; padding-bottom:4px }
header h1{ font-size:32px; font-weight:600; color:var(--white) }
.tagline{ font-size:14px; opacity:0.95; margin-top:6px }


.search-box{
  grid-column: 1 / -1;
  display:flex;
  gap:12px;
  align-items:center;
  justify-content:center;
  flex-wrap:wrap;
  margin-top:4px;
}
.search-box input{
  min-width:260px;
  max-width:420px;
  flex:1 1 320px;
  padding:12px 14px;
  border-radius:12px;
  border:none;
  outline:none;
  font-size:15px;
  background: rgba(255,255,255,0.30);
  color:#111;
  text-align:center;
  box-shadow: inset 0 2px 8px rgba(0,0,0,0.12);
}
.search-box input::placeholder{ color: rgba(20,20,20,0.5) }

.button-group{ display:flex; gap:10px; align-items:center }
.btn{
  padding:10px 16px;
  border-radius:10px;
  cursor:pointer;
  border:none;
  font-weight:600;
  background: rgba(255,255,255,0.18);
  color: #fff;
  transition: all .25s ease;
}
.btn:hover{ background: rgba(255,255,255,0.92); color:#222; transform:scale(1.03) }


.weather-card{
  width:100%;
  max-width:420px;
  padding:20px;
  border-radius: var(--card-radius);
  background: linear-gradient(180deg, rgba(255,255,255,0.06), rgba(255,255,255,0.03));
  backdrop-filter: blur(6px);
  border: 1px solid rgba(255,255,255,0.14);
  text-align:center;
  color:var(--white);
  box-shadow: 0 8px 24px rgba(0,0,0,0.22);
  animation: fadeIn .6s ease;
}
.weather-card img{ width:110px; margin:12px auto; display:block; border-radius:10px; box-shadow:0 6px 18px rgba(0,0,0,0.28) }
.weather-card h2{ font-size:22px; margin-top:6px }
.weather-card p#description{ margin-top:6px; opacity:0.95 }
.weather-card h3{ font-size:34px; margin-top:8px; font-weight:600 }

.details{ margin-top:12px; text-align:left; font-size:15px; line-height:1.6; color:var(--white) }
.details strong{ color:var(--white) }


.weekly-forecast{
  width:100%;
  max-width:520px;
  padding:20px;
  border-radius: var(--card-radius);
  background: linear-gradient(180deg, rgba(255,255,255,0.04), rgba(173,216,230,0.02));
  backdrop-filter: blur(6px);
  border: 1px solid rgba(255,255,255,0.10);
  box-shadow: 0 8px 30px rgba(0,0,0,0.2);
  text-align:center;
}
.weekly-forecast h3{ font-size:18px; margin-bottom:12px; font-weight:600 }


.forecast-container{
  display:flex;
  gap:12px;
  align-items:center;
  padding:8px;
  overflow-x:auto;
  overflow-y:hidden;
  scroll-behavior:smooth;
  scrollbar-width:thin;
  scroll-snap-type: x mandatory; /* snap behavior */
  -webkit-overflow-scrolling: touch;
}
.forecast-container::-webkit-scrollbar{ height:8px }
.forecast-container::-webkit-scrollbar-thumb{ background: rgba(255,255,255,0.35); border-radius:8px }


.forecast-day{
  flex: 0 0 auto;
  width:110px;
  padding:12px;
  border-radius:12px;
  background: rgba(255,255,255,0.12);
  text-align:center;
  color:var(--white);
  transition: transform .25s ease, background .25s ease;
  scroll-snap-align: center; /* snap to center */
}
.forecast-day:hover{ transform: translateY(-6px); background: rgba(255,255,255,0.18) }

.forecast-day img{ width:46px; margin-bottom:6px }
.forecast-day h4{ font-size:15px; font-weight:600; margin:6px 0 }
.forecast-day p{ font-size:13px; opacity:0.95 }


.error-message{ margin-top:10px; color:#ffbaba; font-weight:700; animation: fadeIn .6s ease }


footer{
  margin-top:8px;
  color:var(--white);
  opacity:0.95;
  font-size:13px;
  text-align:center;
}


@keyframes fadeIn{ from{ opacity:0; transform: translateY(8px)} to{opacity:1; transform:none} }


@media (max-width:900px){
  .app-container{ grid-template-columns: 1fr; width:95%; padding:18px }
  header{ text-align:center }
  .forecast-container{ justify-content:flex-start; padding:8px 4px }
  .forecast-day{ width:100px }
  .search-box input{ text-align:left }
}