@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;600;700&display=swap');

:root {
  --text: #222;
  --bg: #f5f5f5;
  --accent: #007bff;
  --card-bg: #fff;
}

body.dark {
  --text: #eee;
  --bg: #121212;
  --accent: #66aaff;
  --card-bg: #1e1e1e;
}

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

body {
  font-family: 'Inter', sans-serif;
  background: var(--bg);
  color: var(--text);
  transition: background 0.3s ease, color 0.3s ease;
  min-height: 100vh;
}

/* Top Navigation */
.top-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 2rem;
  font-weight: 500;
  font-size: 1rem;
  background: transparent;
}

.top-nav .brand {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--accent);
  text-decoration: none;
}

.nav-links {
  display: flex;
  align-items: center;
}

.nav-links a {
  color: var(--text);
  text-decoration: none;
  margin-left: 1.5rem;
  transition: color 0.3s ease;
}

.nav-links a:hover {
  color: var(--accent);
}

#themeToggle {
  background: none;
  border: none;
  font-size: 1.1rem;
  margin-left: 1rem;
  cursor: pointer;
  color: var(--text);
  transition: transform 0.3s ease;
}

#themeToggle:hover {
  transform: scale(1.1);
}

/* Header */
header {
  text-align: center;
  padding: 2rem 1rem 1.5rem;
  animation: fadeInSlide 0.7s ease-in-out;
}

header h1 {
  font-size: 2.4rem;
  margin-bottom: 0.5rem;
}

header p {
  font-size: 1.1rem;
  color: var(--text);
}

/* Pricing Layout */
.pricing-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2rem;
  padding: 2rem;
  max-width: 960px;
  margin: 0 auto;
}

.plan {
  background: var(--card-bg);
  border: 2px solid #ccc;
  border-radius: 15px;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.08);
  padding: 2rem;
  max-width: 380px;
  width: 100%;
  text-align: center;
  transition: transform 0.4s ease, background 0.4s ease;
  animation: zoomIn 0.7s ease forwards;
}

.plan:hover {
  transform: translateY(-6px);
  border-color: var(--accent);
  background: linear-gradient(135deg, #ffffff, #f0f8ff);
}

body.dark .plan:hover {
  background: #1f1f1f;
}

.plan h2 {
  font-size: 1.6rem;
  margin-bottom: 0.6rem;
}

.plan .price {
  font-size: 1.4rem;
  font-weight: 600;
  margin-bottom: 1rem;
  color: var(--text);
}

.plan ul {
  list-style: none;
  padding: 0;
  margin: 1rem 0;
}

.plan ul li {
  margin: 0.5rem 0;
  font-size: 1rem;
}

.plan .note {
  font-size: 0.85rem;
  color: #777;
}

/* Currency Selector */
#currencySelector {
  margin: 0.8rem 0;
  padding: 0.5rem;
  font-size: 1rem;
  border-radius: 8px;
  border: 1px solid #ccc;
  width: 60%;
  background: #fff;
  color: #333;
  transition: background 0.3s;
}

body.dark #currencySelector {
  background: #2c2c2c;
  color: #eee;
  border-color: #444;
}

/* Pay Button */
#payNowBtn {
  background-color: var(--accent);
  color: white;
  border: none;
  padding: 0.75rem 1.5rem;
  font-size: 1rem;
  border-radius: 8px;
  cursor: pointer;
  transition: background 0.3s ease;
}

#payNowBtn:hover {
  background-color: #0056b3;
}

/* Footer */
footer {
  text-align: center;
  padding: 1.5rem 1rem;
  font-size: 0.9rem;
  margin-top: auto;
  color: var(--text);
}

/* Animations */
@keyframes fadeInSlide {
  from {
    opacity: 0;
    transform: translateY(-20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes zoomIn {
  0% {
    opacity: 0;
    transform: scale(0.95);
  }
  100% {
    opacity: 1;
    transform: scale(1);
  }
}