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

/* ===== Theme variables ===== */
:root {
  --bg-card: rgba(8, 10, 30, 0.96);
  --accent-1: #ff6ec7;
  --accent-2: #7b61ff;
  --accent-3: #46e6b0;
  --text-main: #f7f7ff;
  --text-muted: #b4b7d1;
  --border-glass: rgba(255, 255, 255, 0.08);
  --shadow-soft: 0 18px 45px rgba(0, 0, 0, 0.7);
  --radius-xl: 24px;
  --transition-fast: 0.2s ease-out;
  --font-main: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
}

html,
body {
  height: 100%;
}

body {
  font-family: var(--font-main);
  background: radial-gradient(circle at top, #1f1a4d 0, #050716 55%, #000 100%);
  color: var(--text-main);
  display: flex;
  align-items: center;
  justify-content: center;
}

/* glowing backdrop */
.gradient-bg {
  position: fixed;
  inset: -40%;
  background: radial-gradient(circle at 0% 0%, #ff6ec733 0, transparent 55%),
    radial-gradient(circle at 100% 0%, #7b61ff33 0, transparent 55%),
    radial-gradient(circle at 50% 100%, #46e6b033 0, transparent 55%);
  filter: blur(10px);
  opacity: 0.9;
  z-index: -2;
}

/* main card */
.app-shell {
  width: min(960px, 95vw);
  min-height: 70vh;
  background: var(--bg-card);
  border-radius: 32px;
  border: 1px solid var(--border-glass);
  box-shadow: var(--shadow-soft);
  padding: 28px 32px 24px;
  position: relative;
  overflow: hidden;
}

/* header */
.app-header {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 26px;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 26px;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.logo-dot {
  width: 14px;
  height: 14px;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--accent-1), var(--accent-2));
  box-shadow: 0 0 14px rgba(255, 110, 199, 0.9);
}

.tagline {
  font-size: 14px;
  color: var(--text-muted);
}

/* search form */
.search-form {
  margin-top: 8px;
  display: flex;
  gap: 10px;
  max-width: 380px;
}

.search-form input[type="search"] {
  flex: 1;
  padding: 10px 14px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  background: rgba(6, 8, 26, 0.9);
  color: var(--text-main);
  font-size: 14px;
  outline: none;
  transition: border var(--transition-fast), box-shadow var(--transition-fast),
    background var(--transition-fast);
}

.search-form input[type="search"]::placeholder {
  color: rgba(180, 183, 209, 0.85);
}

.search-form input[type="search"]:focus {
  border-color: var(--accent-3);
  background: rgba(5, 8, 30, 1);
  box-shadow: 0 0 0 1px rgba(70, 230, 176, 0.5);
}

.search-form button {
  padding: 10px 22px;
  border-radius: 999px;
  border: none;
  cursor: pointer;
  font-weight: 600;
  font-size: 14px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #050716;
  background: linear-gradient(135deg, var(--accent-1), var(--accent-2));
  box-shadow: 0 10px 25px rgba(255, 110, 199, 0.5);
  transition: transform var(--transition-fast),
    box-shadow var(--transition-fast), filter var(--transition-fast);
}

.search-form button:hover {
  transform: translateY(-1px);
  filter: brightness(1.05);
  box-shadow: 0 14px 35px rgba(123, 97, 255, 0.7);
}

.search-form button:active {
  transform: translateY(1px) scale(0.97);
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.8);
}

/* current weather block */
.current-weather {
  margin-top: 18px;
  padding: 20px 22px;
  border-radius: var(--radius-xl);
  background: radial-gradient(circle at top left, #ffffff10 0, transparent 60%),
    radial-gradient(circle at bottom right, #46e6b014 0, transparent 55%);
  border: 1px solid rgba(255, 255, 255, 0.09);
  display: flex;
  justify-content: space-between;
  align-items: stretch;
  gap: 24px;
}

.current-left {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.current-time {
  font-size: 14px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--accent-3);
}

.city-name {
  font-size: clamp(34px, 4vw, 40px);
  font-weight: 800;
}

.weather-desc {
  font-size: 14px;
  color: var(--text-muted);
  max-width: 340px;
}

/* temperature card */
.current-right {
  display: flex;
  align-items: center;
}

.temp-card {
  margin-left: auto;
  min-width: 170px;
  padding: 18px 22px;
  border-radius: 28px;
  background: linear-gradient(145deg, #12142e, #1f2347);
  border: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.7);
  display: flex;
  align-items: center;
  gap: 14px;
  position: relative;
  overflow: hidden;
}

.temp-card::before {
  content: "";
  position: absolute;
  inset: -40%;
  background: conic-gradient(
    from 140deg,
    var(--accent-1),
    var(--accent-2),
    var(--accent-3),
    var(--accent-1)
  );
  opacity: 0.14;
  filter: blur(18px);
  z-index: -1;
}

.temp-emoji {
  font-size: 32px;
}

.temp-value {
  font-size: 32px;
  font-weight: 700;
}

/* footer */
.app-footer {
  margin-top: 24px;
  font-size: 12px;
  color: var(--text-muted);
  text-align: center;
}

.app-footer a {
  color: var(--accent-3);
  text-decoration: none;
  border-bottom: 1px dashed transparent;
  transition: color var(--transition-fast),
    border-bottom-color var(--transition-fast);
}

.app-footer a:hover {
  color: var(--accent-1);
  border-bottom-color: var(--accent-1);
}

/* responsive */
@media (max-width: 720px) {
  .app-shell {
    padding: 22px 18px;
  }

  .current-weather {
    flex-direction: column;
  }

  .temp-card {
    margin-left: 0;
    align-self: flex-start;
  }

  .search-form {
    max-width: 100%;
  }
}
/* ===== other cities section ===== */
.other-cities {
  margin-top: 26px;
}

.other-title {
  font-size: 16px;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--text-muted);
  margin-bottom: 14px;
}

.city-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 14px;
}

.city-card {
  padding: 14px 16px;
  border-radius: 18px;
  background: linear-gradient(145deg, #141732, #181b3a);
  border: 1px solid rgba(255, 255, 255, 0.06);
  box-shadow: 0 10px 22px rgba(0, 0, 0, 0.55);
  font-size: 13px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  transition: transform 0.18s ease-out, box-shadow 0.18s ease-out,
    border-color 0.18s ease-out;
}

.city-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 16px 32px rgba(0, 0, 0, 0.7);
  border-color: rgba(123, 97, 255, 0.8);
}

.city-label {
  font-weight: 600;
}

.city-temp {
  font-size: 18px;
  font-weight: 700;
}

.city-meta {
  color: var(--text-muted);
}