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

body {
  font-family: 'Segoe UI', system-ui, sans-serif;
  background: #f0f2f5;
  color: #1a1a2e;
  min-height: 100vh;
}

/* ─── Header ──────────────────────────────────────────────────────────────── */

header {
  background: #2d3561;
  color: #fff;
  padding: 0.85rem 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  flex-wrap: wrap;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

header h1 {
  font-size: 1.4rem;
  letter-spacing: 0.5px;
  white-space: nowrap;
  color: #fff;
}

.header-weather {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 0.4rem;
}

.header-weather-input {
  display: flex;
  gap: 0.5rem;
  align-items: center;
}

.header-weather-input input {
  padding: 0.4rem 0.7rem;
  border: 1.5px solid rgba(255, 255, 255, 0.35);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.12);
  color: #fff;
  font-size: 0.9rem;
  width: 110px;
  outline: none;
  text-align: center;
  letter-spacing: 1px;
  transition: border-color 0.2s, background 0.2s;
}

.header-weather-input input::placeholder {
  color: rgba(255, 255, 255, 0.55);
}

.header-weather-input input:focus {
  border-color: #fff;
  background: rgba(255, 255, 255, 0.2);
}

.header-weather-input button {
  padding: 0.4rem 0.85rem;
  background: rgba(255, 255, 255, 0.18);
  color: #fff;
  border: 1.5px solid rgba(255, 255, 255, 0.35);
  border-radius: 8px;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s;
}

.header-weather-input button:hover {
  background: rgba(255, 255, 255, 0.3);
}

.weather-result {
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.9);
  display: flex;
  gap: 0.5rem;
  align-items: center;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.weather-result.hidden { display: none; }

.weather-result.error {
  color: #ffb3ae;
}

.w-temp   { font-weight: 700; font-size: 0.95rem; }
.w-city   { opacity: 0.85; }
.w-cond   { opacity: 0.85; }
.w-wind   { opacity: 0.75; font-size: 0.8rem; }
.w-sep    { opacity: 0.4; }

/* ─── Main content ────────────────────────────────────────────────────────── */

main {
  padding: 2rem 1rem;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  max-width: 1100px;
  margin: 0 auto;
}

.card {
  background: #fff;
  border-radius: 12px;
  padding: 1.5rem;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.card h2 {
  font-size: 1.1rem;
  color: #2d3561;
  border-bottom: 2px solid #e8eaf6;
  padding-bottom: 0.5rem;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

.field label {
  font-size: 0.85rem;
  font-weight: 600;
  color: #555;
  text-transform: uppercase;
  letter-spacing: 0.4px;
}

.field input {
  padding: 0.55rem 0.75rem;
  border: 1.5px solid #d1d5db;
  border-radius: 8px;
  font-size: 1rem;
  transition: border-color 0.2s;
  outline: none;
  width: 100%;
}

.field input:focus {
  border-color: #5c6bc0;
}

button {
  padding: 0.65rem 1rem;
  background: #5c6bc0;
  color: #fff;
  border: none;
  border-radius: 8px;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s, transform 0.1s;
}

button:hover {
  background: #3949ab;
}

button:active {
  transform: scale(0.98);
}

.result {
  min-height: 2rem;
  background: #f3f4f6;
  border-radius: 8px;
  padding: 0.55rem 0.75rem;
  font-size: 0.95rem;
  color: #2d3561;
  font-weight: 500;
}

.result.error {
  color: #c0392b;
  background: #fdecea;
}

.shape-diagram {
  width: 100%;
  max-height: 80px;
}