/* ─── Reset & Base ──────────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg:        #f0f4f8;
  --surface:   #ffffff;
  --border:    #e2e8f0;
  --text:      #1e293b;
  --muted:     #64748b;
  --primary:   #2563eb;
  --primary-h: #1d4ed8;
  --danger:    #dc2626;

  --temp-bg:   #fff7ed;
  --temp-col:  #ea580c;
  --hum-bg:    #eff6ff;
  --hum-col:   #2563eb;
  --rain-bg:   #ecfeff;
  --rain-col:  #0891b2;

  --radius: 14px;
  --shadow: 0 2px 16px rgba(0,0,0,.07);
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
}

/* ─── Login ─────────────────────────────────────────────────────────────────── */
.login-wrapper {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 1rem;
}

.login-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 2.5rem 2rem;
  width: 100%;
  max-width: 380px;
}

.login-logo {
  font-size: 2.5rem;
  text-align: center;
  margin-bottom: .5rem;
}

.login-card h1 {
  font-size: 1.35rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: .25rem;
}

.login-card .subtitle {
  text-align: center;
  color: var(--muted);
  font-size: .875rem;
  margin-bottom: 1.75rem;
}

.form-group { margin-bottom: 1rem; }

.form-group label {
  display: block;
  font-size: .8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .05em;
  color: var(--muted);
  margin-bottom: .4rem;
}

.form-group input {
  width: 100%;
  padding: .65rem .9rem;
  border: 1.5px solid var(--border);
  border-radius: 8px;
  font-size: .95rem;
  outline: none;
  transition: border-color .15s;
  background: var(--bg);
}

.form-group input:focus { border-color: var(--primary); background: #fff; }

.btn {
  display: block;
  width: 100%;
  padding: .7rem;
  background: var(--primary);
  color: #fff;
  border: none;
  border-radius: 8px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  margin-top: 1.25rem;
  transition: background .15s;
}

.btn:hover { background: var(--primary-h); }

.error-msg {
  background: #fef2f2;
  border: 1px solid #fecaca;
  color: var(--danger);
  border-radius: 8px;
  padding: .65rem .9rem;
  font-size: .875rem;
  margin-bottom: 1rem;
}

/* ─── Dashboard layout ───────────────────────────────────────────────────────── */
.app-header {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: 1rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 10;
}

.app-header .brand {
  display: flex;
  align-items: center;
  gap: .6rem;
  font-weight: 700;
  font-size: 1.1rem;
}

.app-header .brand .logo { font-size: 1.4rem; }

.header-actions { display: flex; align-items: center; gap: 1rem; }

.refresh-btn {
  background: var(--bg);
  border: 1.5px solid var(--border);
  border-radius: 8px;
  padding: .45rem .9rem;
  font-size: .85rem;
  font-weight: 600;
  cursor: pointer;
  color: var(--text);
  transition: background .15s, border-color .15s;
}
.refresh-btn:hover { background: #e2e8f0; }
.refresh-btn:disabled { opacity: .5; cursor: not-allowed; }

.logout-link {
  font-size: .85rem;
  color: var(--muted);
  text-decoration: none;
  font-weight: 500;
}
.logout-link:hover { color: var(--danger); }

.main {
  max-width: 960px;
  margin: 2rem auto;
  padding: 0 1.5rem;
}

/* ─── Status bar ─────────────────────────────────────────────────────────────── */
.status-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
  gap: .5rem;
}

.status-bar .fetched {
  font-size: .8rem;
  color: var(--muted);
}

.countdown {
  font-size: .8rem;
  color: var(--muted);
}

/* ─── Metric cards ───────────────────────────────────────────────────────────── */
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.25rem;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.75rem 1.5rem;
  display: flex;
  flex-direction: column;
  gap: .75rem;
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 4px;
}

.card.temp  { border-top: 4px solid var(--temp-col); }
.card.hum   { border-top: 4px solid var(--hum-col);  }
.card.rain  { border-top: 4px solid var(--rain-col); }

.card-header {
  display: flex;
  align-items: center;
  gap: .6rem;
}

.card-icon {
  width: 42px; height: 42px;
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.35rem;
}

.card.temp  .card-icon { background: var(--temp-bg); }
.card.hum   .card-icon { background: var(--hum-bg);  }
.card.rain  .card-icon { background: var(--rain-bg); }

.card-label {
  font-size: .8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .06em;
  color: var(--muted);
}

.card-label-group {
  display: flex;
  flex-direction: column;
  gap: .15rem;
}

.card-tag {
  font-size: .7rem;
  font-weight: 500;
  color: var(--muted);
  text-transform: none;
  letter-spacing: 0;
  opacity: .8;
}

.card-value {
  font-size: 3rem;
  font-weight: 800;
  line-height: 1;
  letter-spacing: -.02em;
}

.card.temp  .card-value { color: var(--temp-col); }
.card.hum   .card-value { color: var(--hum-col);  }
.card.rain  .card-value { color: var(--rain-col); }

.card-unit {
  font-size: 1.25rem;
  font-weight: 500;
  vertical-align: super;
  margin-left: .15rem;
}

.card-footer {
  font-size: .775rem;
  color: var(--muted);
  margin-top: .25rem;
  display: flex;
  align-items: center;
  gap: .5rem;
}

.card-field {
  font-family: ui-monospace, 'SF Mono', Menlo, monospace;
  font-size: .7rem;
  background: var(--border);
  border-radius: 4px;
  padding: .1rem .35rem;
  color: var(--muted);
}

/* loading skeleton */
.skeleton {
  display: inline-block;
  background: linear-gradient(90deg, #e2e8f0 25%, #f0f4f8 50%, #e2e8f0 75%);
  background-size: 200% 100%;
  animation: shimmer 1.4s infinite;
  border-radius: 6px;
  min-width: 80px; min-height: 3rem;
}
@keyframes shimmer { 0% { background-position: 200% 0; } 100% { background-position: -200% 0; } }

/* error state */
.card-value.error {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--danger);
}

/* ─── Global error banner ─────────────────────────────────────────────────────── */
.global-error {
  background: #fef2f2;
  border: 1px solid #fecaca;
  color: var(--danger);
  border-radius: 10px;
  padding: .8rem 1rem;
  font-size: .875rem;
  margin-bottom: 1.25rem;
  display: none;
}

@media (max-width: 480px) {
  .main { padding: 0 1rem; }
  .app-header { padding: .9rem 1rem; }
  .card-value { font-size: 2.5rem; }
}