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

:root {
  --sky-1: #0f172a;
  --sky-2: #1e3a5f;
  --sky-3: #2563eb;
  --surface: rgba(255,255,255,0.07);
  --surface-hover: rgba(255,255,255,0.12);
  --border: rgba(255,255,255,0.1);
  --text: #f1f5f9;
  --text-muted: rgba(255,255,255,0.55);
  --accent: #fbbf24;
  --accent-glow: rgba(251,191,36,0.25);
  --radius: 20px;
  --radius-sm: 14px;
  --font: 'Outfit', -apple-system, BlinkMacSystemFont, sans-serif;
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  color: var(--text);
  background: linear-gradient(180deg, var(--sky-1) 0%, var(--sky-2) 50%, var(--sky-3) 100%);
  background-attachment: fixed;
  min-height: 100vh;
}

.hidden { display: none !important; }

/* ── Header ──────────────────────────────────── */
.header {
  text-align: center;
  padding: 3rem 1.5rem 1rem;
}

.logo {
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.accent { color: var(--accent); }

.header__tagline {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-top: 0.3rem;
}

/* ── Sections ────────────────────────────────── */
.section {
  max-width: 600px;
  margin: 0 auto;
  padding: 1.5rem 1.5rem 0;
}

.section--local {
  padding-bottom: 2rem;
}

.section__title {
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  margin-bottom: 1rem;
}

/* ── City Grid ───────────────────────────────── */
.city-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.7rem;
}

.city-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 1.2rem 0.8rem;
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: background 0.3s, transform 0.2s, border-color 0.3s;
  animation: fadeIn 0.5s ease-out both;
}

.city-card:nth-child(1) { animation-delay: 0.05s; }
.city-card:nth-child(2) { animation-delay: 0.1s; }
.city-card:nth-child(3) { animation-delay: 0.15s; }
.city-card:nth-child(4) { animation-delay: 0.2s; }
.city-card:nth-child(5) { animation-delay: 0.25s; }
.city-card:nth-child(6) { animation-delay: 0.3s; }

.city-card:hover {
  background: var(--surface-hover);
  transform: translateY(-3px);
  border-color: rgba(255,255,255,0.2);
}

.city-card.loading {
  opacity: 0.6;
}

.city-card__name {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
}

.city-card__icon {
  font-size: 2rem;
  line-height: 1;
}

.city-card__temp {
  font-size: 1.6rem;
  font-weight: 800;
}

.city-card__desc {
  font-size: 0.7rem;
  color: var(--text-muted);
}

/* ── Local Prompt ────────────────────────────── */
.local-prompt {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem 1.5rem;
  text-align: center;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  animation: fadeIn 0.5s ease-out 0.4s both;
}

.local-prompt p {
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.5;
  margin-bottom: 1.5rem;
}

/* ── Buttons ─────────────────────────────────── */
.btn-primary {
  display: inline-block;
  width: 100%;
  padding: 0.9rem;
  font-family: var(--font);
  font-size: 0.95rem;
  font-weight: 700;
  color: #1e293b;
  background: var(--accent);
  border: none;
  border-radius: 99px;
  cursor: pointer;
  transition: transform 0.2s, box-shadow 0.2s;
  box-shadow: 0 4px 20px var(--accent-glow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px var(--accent-glow);
}

.btn-primary:active { transform: translateY(0); }

.error-msg {
  margin-top: 1rem;
  font-size: 0.82rem;
  color: #fca5a5;
  background: rgba(239,68,68,0.12);
  padding: 0.6rem;
  border-radius: 10px;
}

/* ── Local Weather ───────────────────────────── */
.local-weather {
  animation: fadeIn 0.5s ease-out both;
}

.local-weather__head {
  text-align: center;
  margin-bottom: 0.5rem;
}

.local-weather__city {
  display: block;
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-muted);
}

.local-weather__desc {
  font-size: 1rem;
  text-transform: capitalize;
}

.local-weather__temp {
  text-align: center;
  font-size: 5.5rem;
  font-weight: 800;
  line-height: 1;
  margin: 0.5rem 0 1rem;
  text-shadow: 0 4px 20px rgba(0,0,0,0.2);
}

.temp-unit {
  font-size: 2rem;
  font-weight: 400;
  vertical-align: super;
  opacity: 0.6;
}

/* ── Detail Chips ────────────────────────────── */
.local-detail-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}

.detail-chip {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0.9rem 0.5rem;
  text-align: center;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.detail-chip__label {
  display: block;
  font-size: 0.6rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  margin-bottom: 0.3rem;
}

.detail-chip__val {
  font-size: 1.1rem;
  font-weight: 700;
}

/* ── Hourly Forecast ─────────────────────────── */
.forecast-section h3 {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  margin-bottom: 0.7rem;
}

.forecast-row {
  display: flex;
  gap: 0.45rem;
  overflow-x: auto;
  padding-bottom: 0.5rem;
  scrollbar-width: none;
}

.forecast-row::-webkit-scrollbar { display: none; }

.forecast-item {
  flex: 0 0 64px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0.7rem 0.4rem;
  text-align: center;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.forecast-item__time {
  font-size: 0.65rem;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 0.3rem;
}

.forecast-item__icon { font-size: 1.3rem; }

.forecast-item__temp {
  font-size: 0.85rem;
  font-weight: 700;
  margin-top: 0.2rem;
}

/* ── Footer ──────────────────────────────────── */
.footer {
  text-align: center;
  padding: 2rem 1rem;
  font-size: 0.72rem;
  color: var(--text-muted);
}

/* ── Animations ──────────────────────────────── */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ── Responsive ──────────────────────────────── */
@media (max-width: 600px) {
  .city-grid { grid-template-columns: repeat(2, 1fr); gap: 0.5rem; }
  .local-detail-grid { grid-template-columns: repeat(2, 1fr); gap: 0.5rem; }
  .local-weather__temp { font-size: 4.5rem; }
  .section { padding: 1rem 1rem 0; }
  .header { padding: 2rem 1rem 1rem; }
  .city-card { padding: 1rem 0.5rem; }
  .city-card__icon { font-size: 1.8rem; }
  .city-card__temp { font-size: 1.4rem; }
}

@media (max-width: 360px) {
  .city-grid { grid-template-columns: 1fr; }
  .local-weather__temp { font-size: 3.8rem; }
}