/* =========================================================
   BASE STYLES
   Minimal starter — reset, typography, background, variables.
   ========================================================= */

/* =========================
   1. VARIABLES
   ========================= */

:root {
  /* === Colors === */
  --color-bg: #0a0e27;
  --color-text: #fffefe;
  --color-muted: #666666;
  --color-accent: #3366ff;
  --color-border: #e0e0e0;

  /* === Gradient === */
  --gradient-1: #419eaa;
  --gradient-2: #450663;

  /* === Spacing === */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;

  /* === Font Sizes === */
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.25rem;
  --text-xl: 1.75rem;

  /* === Transitions === */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;

  /* === Effects === */
  --shadow: 0px 0px 16px 0px rgba(47, 29, 61, 0.7);
  --shadow-dark: 0px 0px 16px 0px rgb(8, 0, 14);
}

/* =========================
   2. RESET
   ========================= */

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

html,
body {
  height: 100%;
}

body {
  font-family: "Poppins", sans-serif;
  background-color: var(--color-bg);
  color: var(--color-text);
  display: flex;
  flex-direction: column;
  line-height: 1.6;
}

/* =========================
   3. TYPOGRAPHY
   ========================= */

h1,
h2,
h3,
h4 {
  line-height: 1.2;
  font-weight: 700;
}

h1 {
  font-size: clamp(1.5rem, 5vw, 2.5rem);
}

h2 {
  font-size: clamp(1.25rem, 4vw, 2rem);
}

h3,
h4 {
  font-size: clamp(1.1rem, 3vw, 1.5rem);
}

p {
  font-size: var(--text-base);
  color: var(--color-text);
}

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: var(--transition-fast);
}

a:hover {
  text-decoration: underline;
}

/* =========================
  COMPONENTS
   ========================= */

.card {
  width: 90%;
  max-width: 470px;
  background: linear-gradient(
    135deg,
    var(--gradient-1),
    var(--gradient-1),
    var(--gradient-2),
    var(--gradient-2)
  );
  background-size: 200% 200%;
  animation: gradientMove 20s ease infinite;
  margin: 100px auto 0;
  border-radius: var(--space-xl);
  padding: var(--space-xl) var(--space-lg);
  text-align: center;
  transition: var(--transition-normal);
}
.card:hover {
  box-shadow: var(--shadow-dark);
}
@keyframes gradientMove {
  0% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
  100% {
    background-position: 0% 50%;
  }
}

.search {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.search input {
  border: 0;
  outline: 0;
  background-color: #ebfffc;
  color: var(--color-muted);
  padding: var(--space-sm) var(--text-lg);
  height: 60px;
  border-radius: var(--text-xl);
  flex: 1;
  margin-right: var(--space-md);
  font-size: var(--text-lg);
}

.btn {
  border: 0;
  outline: 0;
  background-color: #ebfffc;
  border-radius: 50%;
  width: 60px;
  height: 60px;
  cursor: pointer;
  transition: var(--transition-normal);
  display: flex;
  align-items: center;
  justify-content: center;
}

.btn img {
  width: 16px;
}

.btn:hover {
  opacity: 0.85;
  box-shadow: var(--shadow);
}

.weather-icon {
  width: 170px;
  margin-top: var(--space-xl);
}
.weather h1 {
  font-size: 80px;
  font-weight: 500;
}
.weather h2 {
  font-size: 45px;
  font-weight: 400;
  margin-top: -10px;
}
.details {
  display: flex;
  align-items: center;
  justify-content: space-around;
  padding: 0 var(--space-md);
  margin-top: var(--space-2xl);
}
.col {
  display: flex;
  align-items: center;
  text-align: left;
}
.col img {
  width: 40px;
  margin-right: var(--space-md);
}
.humidity,
.wind {
  font-size: var(--text-xl);
  margin-top: -6px;
}
.weather {
  display: none;
}
.error {
  text-align: left;
  margin-left: var(--space-sm);
  margin-top: var(--space-sm);
  font-size: var(--text-sm);
  display: none;
}