/* ======= RESET & BASE ======= */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
  background: linear-gradient(to bottom, #4facfe, #00f2fe);
  color: #fff;
  transition: background 0.3s, color 0.3s;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.container {
  width: 100%;
  max-width: 1200px;
  padding: 0 20px;
}

/* ======= HEADER ======= */
header {
  width: 100%;
  max-width: 1200px;
  padding: 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
}

header h1 {
  font-size: 1.8rem;
  font-weight: 600;
}

nav {
  display: flex;
  align-items: center;
  gap: 20px;
}

nav a {
  color: white;
  text-decoration: none;
  font-weight: 500;
  transition: opacity 0.3s;
  padding-bottom: 4px;
}

nav a:hover {
  opacity: 0.7;
}

nav a.active {
  font-weight: bold;
  border-bottom: 2px solid white;
}

.dark-mode-btn {
  background: rgba(255,255,255,0.2);
  border: none;
  color: white;
  font-size: 20px;
  border-radius: 8px;
  padding: 5px 10px;
  cursor: pointer;
  transition: background 0.3s;
}

.dark-mode-btn:hover {
  background: rgba(255,255,255,0.35);
}

/* ======= MAIN ======= */
main {
  flex: 1;
  width: 100%;
  max-width: 1200px;
  padding: 40px 20px;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

/* ======= HOME PAGE ======= */
.home-content {
  max-width: 700px;
}

.home-content h2 {
  font-size: 2.2rem;
  margin-bottom: 15px;
}

.home-content p {
  font-size: 1.5rem;
  margin-bottom: 15px;
  opacity: 0.9;
  line-height: 1.5;
}

.cta-btn {
  background: white;
  color: #007bff;
  padding: 12px 25px;
  border: none;
  border-radius: 25px;
  font-weight: bold;
  cursor: pointer;
  text-decoration: none;
  transition: background 0.3s, color 0.3s;
}

.cta-btn:hover {
  background: #007bff;
  color: white;
}

/* ======= SEARCH BOX ======= */
.search-box {
  display: flex;
  justify-content: center;
  margin-bottom: 25px;
  gap: 10px;
  width: 100%;
  max-width: 500px;
}

.search-box input {
  padding: 12px;
  width: 100%;
  border: none;
  border-radius: 25px;
  outline: none;
  font-size: 1rem;
  box-shadow: 0 2px 6px rgba(0,0,0,0.2);
}

.search-box button {
  background: white;
  color: #007bff;
  border: none;
  padding: 12px 20px;
  border-radius: 25px;
  cursor: pointer;
  font-weight: 600;
  transition: background 0.3s, color 0.3s;
}

.search-box button:hover {
  background: #007bff;
  color: white;
}

/* ======= WEATHER CARDS ======= */
.city-grid, .forecast-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
  width: 100%;
  max-width: 1000px;
  justify-items: center;
}

.city-card, .forecast-card {
  background: rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(8px);
  padding: 20px;
  width: 220px;
  border-radius: 20px;
  text-align: center;
  box-shadow: 0 2px 10px rgba(0,0,0,0.1);
  transition: transform 0.3s;
}

.city-card:hover, .forecast-card:hover {
  transform: scale(1.05);
}

.city-card img, .forecast-card img {
  width: 80px;
  margin-bottom: 10px;
}

.city-card h3 {
  font-size: 1.2rem;
  margin-bottom: 5px;
}

.city-card p {
  font-size: 0.95rem;
  opacity: 0.9;
  margin-bottom: 10px;
}

.city-card button{
  background-color: #4facfe;
  padding: 8px 15px;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  margin-bottom: 15px;
}

.back-btn{
    background-color: #00f2fe;
  padding: 8px 15px;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  margin-bottom: 15px;
}

/* ======= FEEDBACK ======= */
.feedback-section {
  width: 100%;
  max-width: 600px;
  margin-top: 20px;
  text-align: left;
}

.feedback-section h2 {
  text-align: center;
  margin-bottom: 20px;
}

.feedback-section form {
  display: flex;
  flex-direction: column;
  gap: 15px;
}

.feedback-section input,
.feedback-section textarea {
  padding: 14px;
  border: none;
  border-radius: 15px;
  font-size: 1rem;
  outline: none;
  width: 500px;
}

.feedback-section textarea {
  resize: vertical;
  min-height: 150px;
}

.feedback-section button {
  background: white;
  color: #007bff;
  font-weight: bold;
  padding: 14px;
  border-radius: 25px;
  border: none;
  cursor: pointer;
  transition: 0.3s;
}

.feedback-section button:hover {
  background: #007bff;
  color: white;
}

/* ======= FOOTER ======= */
footer {
  background: rgba(0,0,0,0.25);
  color: white;
  text-align: center;
  padding: 15px;
  font-size: 0.9rem;
  width: 100%;
  margin-top: auto;
}

/* ======= DARK MODE ======= */
.dark-mode {
  background: linear-gradient(to bottom, #1f1f1f, #2e2e2e);
  color: #eee;
}

.dark-mode nav a.active {
  border-bottom: 2px solid #eee;
}

.dark-mode .city-card,
.dark-mode .forecast-card {
  background: rgba(255, 255, 255, 0.1);
}

.dark-mode .search-box input {
  background: #333;
  color: #eee;
}

.dark-mode .search-box button {
  background: #eee;
  color: #333;
}

.dark-mode .cta-btn {
  background: #eee;
  color: #222;
}

.dark-mode .cta-btn:hover {
  background: #007bff;
  color: white;
}

.dark-mode footer {
  background: rgba(0,0,0,0.4);
}