:root {
  --primary-color: #6C63FF;
  --secondary-color: #FF6584;
  --bg-color: #1E1E2F;
  --card-color: #2C2C3C;
  --text-color: #FFFFFF;
  --input-bg: #1E1E2F;
  --input-border: #6C63FF;
  --transition-speed: 0.4s;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Poppins', sans-serif;
}

body, html {
  min-height: 100%;
  background: var(--bg-color);
  color: var(--text-color);
  overflow-x: hidden;
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 20px;
  position: relative;
  z-index: 10;
}

/* HEADER */
header {
  text-align: center;
  margin-bottom: 40px;
}

header h1 {
  font-size: 32px;
  margin-bottom: 10px;
  color: var(--primary-color);
}

.clock-calendar {
  display: flex;
  justify-content: center;
  gap: 20px;
  font-weight: 500;
  color: #aaa;
}

#clock, #date {
  background: var(--card-color);
  padding: 10px 20px;
  border-radius: 10px;
}

/* EXCHANGE CARD */
.exchange-section {
  display: flex;
  justify-content: center;
  margin-bottom: 50px;
}

.exchange-card {
  background: var(--card-color);
  padding: 30px;
  border-radius: 20px;
  box-shadow: 0 15px 35px rgba(0,0,0,0.4);
  text-align: center;
  width: 100%;
  max-width: 400px;
  animation: fadeIn 1s ease forwards;
}

.exchange-card h2 {
  margin-bottom: 20px;
  color: var(--secondary-color);
}

.input-group {
  margin-bottom: 20px;
}

.input-group input,
.input-group select {
  width: 100%;
  padding: 12px;
  border-radius: 10px;
  border: 2px solid var(--input-border);
  background: var(--input-bg);
  color: var(--text-color);
  font-size: 16px;
  outline: none;
  transition: all var(--transition-speed) ease;
}

.input-group input:focus,
.input-group select:focus {
  border-color: var(--secondary-color);
}

.btn {
  width: 100%;
  padding: 12px;
  border-radius: 10px;
  border: none;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: #fff;
  font-size: 16px;
  cursor: pointer;
  transition: all 0.3s ease;
}

.btn:hover {
  transform: scale(1.05);
  box-shadow: 0 10px 20px rgba(108, 99, 255, 0.5);
}

.result {
  margin-top: 20px;
  font-weight: 500;
}

/* CURRENCY CARDS */
.cards-section {
  margin-bottom: 60px;
  text-align: center;
}

.cards-section h2 {
  margin-bottom: 30px;
  color: var(--primary-color);
}

.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 20px;
}

.currency-card {
  background: var(--card-color);
  border-radius: 20px;
  padding: 20px;
  text-align: center;
  box-shadow: 0 10px 25px rgba(0,0,0,0.3);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.currency-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 15px 35px rgba(108, 99, 255, 0.5);
}

.currency-card h3 {
  margin-bottom: 10px;
  color: var(--secondary-color);
}

.currency-card p {
  font-size: 14px;
  color: #aaa;
}

/* BACKGROUND SHAPES */
.background-shapes span {
  position: absolute;
  display: block;
  width: 120px;
  height: 120px;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  border-radius: 50%;
  animation: float 6s ease-in-out infinite;
  opacity: 0.3;
  z-index: 1;
}

.background-shapes span:nth-child(1) { top: -50px; left: -50px; animation-delay: 0s; }
.background-shapes span:nth-child(2) { bottom: -60px; right: -60px; animation-delay: 2s; }
.background-shapes span:nth-child(3) { top: 20%; left: 80%; animation-delay: 4s; }
.background-shapes span:nth-child(4) { bottom: 30%; left: 20%; animation-delay: 6s; }

/* ANIMATIONS */
@keyframes float {
  0%,100% { transform: translateY(0) rotate(0deg);}
  50% { transform: translateY(-20px) rotate(45deg);}
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(-20px);}
  to { opacity: 1; transform: translateY(0);}
}

/* RESPONSIVE */
@media(max-width: 600px) {
  .clock-calendar { flex-direction: column; gap: 10px; }
  .cards-grid { grid-template-columns: 1fr; }
}