:root {
  --color-bg: #eef2f7;
  --color-surface: #ffffff;
  --color-primary: #8250dd;
  --color-primary-dark: #682591;
  --color-secondary: #eef1f8;
  --color-text: #1c2536;
  --color-text-muted: #6b7789;
  --color-border: #e1e5ee;
  --color-error: #a13a3a;
  --color-error-bg: #fdeceb;
  --radius-lg: 16px;
  --radius-md: 10px;
  --radius-sm: 6px;
  --shadow-card: 0 4px 16px rgba(30, 41, 59, 0.08);
  --shadow-modal: 0 12px 40px rgba(15, 23, 42, 0.25);
  --font-main: "sans-serif";
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  font-family: var(--font-main);
  background: linear-gradient(180deg, #dfe9f8 0%, #eef2f7 220px);
  color: var(--color-text);
  min-height: 100%;
}

.app {
  max-width: 1100px;
  margin: 0 auto;
  padding: 20px 16px 60px;
}

.app__header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 28px;
}

.app__title {
  font-size: 1.6rem;
  margin: 0;
  font-weight: 700;
}

.app__actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.btn {
  border: none;
  border-radius: var(--radius-md);
  padding: 10px 16px;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.btn:active { transform: scale(0.97); }

.btn--primary {
  background: var(--color-primary);
  color: #fff;
}
.btn--primary:hover { background: var(--color-primary-dark); }

.btn--secondary {
  background: var(--color-surface);
  color: var(--color-text);
  border: 1px solid var(--color-border);
}
.btn--secondary:hover { background: var(--color-secondary); }

.btn--small {
  padding: 6px 12px;
  font-size: 0.85rem;
}

.btn__icon { font-size: 1rem; }
.btn.is-spinning .btn__icon {
  display: inline-block;
  animation: spin 0.8s linear infinite;
}

.cities-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 18px;
}

.empty-state {
  text-align: center;
  color: var(--color-text-muted);
  margin-top: 40px;
}

.weather-card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  padding: 18px;
  min-height: 220px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.weather-card__header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 8px;
}

.weather-card__heading {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.weather-card__title {
  margin: 0;
  font-size: 1.15rem;
  font-weight: 700;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.weather-card__subtitle {
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

.weather-card__remove {
  background: transparent;
  border: none;
  color: var(--color-text-muted);
  font-size: 1.3rem;
  line-height: 1;
  cursor: pointer;
  padding: 2px 6px;
  border-radius: var(--radius-sm);
  flex-shrink: 0;
}
.weather-card__remove:hover {
  background: var(--color-error-bg);
  color: var(--color-error);
}

.weather-card__body {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.weather-card__loading {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  color: var(--color-text-muted);
  font-size: 0.9rem;
  padding: 20px 0;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(4px); }
  to { opacity: 1; transform: translateY(0); }
}

.weather-card__error {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  text-align: center;
  color: var(--color-error);
  background: var(--color-error-bg);
  border-radius: var(--radius-md);
  padding: 16px 10px;
  font-size: 0.9rem;
}

.weather-card__error-text { margin: 0; }

.weather-card__current {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}

.weather-card__icon { font-size: 2.4rem; line-height: 1; }
.weather-card__temp { font-size: 2rem; font-weight: 700; }
.weather-card__desc {
  color: var(--color-text-muted);
  font-size: 0.95rem;
}

.weather-card__forecast {
  display: flex;
  justify-content: space-between;
  gap: 6px;
  border-top: 1px solid var(--color-border);
  padding-top: 12px;
}

.forecast-day {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  font-size: 0.82rem;
  color: var(--color-text-muted);
  min-width: 0;
}

.forecast-day__label {
  font-weight: 600;
  color: var(--color-text);
  text-transform: capitalize;
}

.forecast-day__icon { font-size: 1.4rem; }

.forecast-day__temps { white-space: nowrap; font-size: 0.78rem; }
.forecast-day__max { font-weight: 600; color: var(--color-text); }

.modal {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
}
.modal[hidden] {
  display: none;
}
.weather-card__loading[hidden] {
  display: none;
}
.weather-card__error[hidden] {
  display: none;
}
.modal__overlay {
  position: absolute;
  inset: 0;
  background: rgba(24, 15, 42, 0.45);
}

.modal__content {
  position: relative;
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-modal);
  padding: 28px 24px;
  max-width: 420px;
  width: 100%;
  z-index: 1;
}

.modal__title {
  margin: 0 0 8px;
  font-size: 1.25rem;
}

.modal__subtitle {
  margin: 0 0 18px;
  color: var(--color-text-muted);
  font-size: 0.9rem;
  line-height: 1.4;
}

.modal__close {
  position: absolute;
  top: 14px;
  right: 14px;
  background: transparent;
  border: none;
  font-size: 1.4rem;
  cursor: pointer;
  color: var(--color-text-muted);
  line-height: 1;
}
.modal__close:hover { color: var(--color-text); }

/* ===== Form ===== */
.city-form__field {
  position: relative;
  margin-bottom: 18px;
}

.city-form__label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 6px;
}

.city-form__input {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: 0.95rem;
  font-family: inherit;
}
.city-form__input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(53, 98, 224, 0.15);
}
.city-form__input.is-invalid {
  border-color: var(--color-error);
}

.city-form__dropdown {
  position: absolute;
  top: calc(100% + 4px);
  left: 0;
  right: 0;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
  max-height: 220px;
  overflow-y: auto;
  z-index: 5;
}

.city-form__dropdown-item {
  padding: 9px 12px;
  cursor: pointer;
  font-size: 0.9rem;
  display: flex;
  justify-content: space-between;
  gap: 8px;
}
.city-form__dropdown-item:hover,
.city-form__dropdown-item.is-active {
  background: var(--color-secondary);
}
.city-form__dropdown-item span:last-child {
  color: var(--color-text-muted);
  font-size: 0.8rem;
}

.city-form__error {
  color: var(--color-error);
  font-size: 0.82rem;
  margin-top: 6px;
}

.city-form__submit { width: 100%; justify-content: center; }

@media (max-width: 640px) {
  .app__header {
    flex-direction: column;
    align-items: stretch;
  }
  .app__actions {
    justify-content: stretch;
  }
  .app__actions .btn { flex: 1; justify-content: center; }
  .cities-grid { grid-template-columns: 1fr; }
  .modal__content { padding: 22px 18px; }
}

@media (min-width: 641px) and (max-width: 900px) {
  .cities-grid { grid-template-columns: repeat(2, 1fr); }
}