/* === GENERAL STYLES === */
body {
  margin: 0;
  font-family: 'Segoe UI', sans-serif;
  background: #f5f6fa;
  color: #222;
}

/* === HEADER === */
header {
  text-align: center;
  padding: 30px 10px;
  background: #ffffff;
  box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}

header h1 {
  margin: 0;
  font-size: 2rem;
  color: #2b2b2b;
}

header p {
  margin: 5px 0 0;
  color: #777;
}

/* === CONTROLS (Search + Currency) === */
.controls {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 16px;
  background: #fff;
  flex-wrap: wrap;
  gap: 10px;
  box-shadow: 0 1px 4px rgba(0,0,0,0.05);
}

#searchBar {
  flex: 1;
  padding: 10px;
  font-size: 16px;
  border: 1px solid #ccc;
  border-radius: 6px;
}

#currencySwitcher {
  padding: 10px;
  font-size: 16px;
  border: 1px solid #ccc;
  border-radius: 6px;
}

/* === TABS === */
.tab-buttons {
  display: flex;
  justify-content: space-around;
  margin: 15px 10px;
  flex-wrap: wrap;
  gap: 8px;
}

.tab-buttons button {
  flex: 1;
  padding: 10px 14px;
  border: none;
  background: #eaeaea;
  border-radius: 20px;
  font-weight: 600;
  cursor: pointer;
}

.tab-buttons button.active {
  background: #007bff;
  color: #fff;
}

/* === TABLE HEADER === */
.table-header {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 2fr;
  padding: 12px 20px;
  background: #eaeaea;
  font-weight: bold;
}

/* === COIN LIST === */
.coin-list {
  display: grid;
  grid-template-columns: 1fr;
}

.coin-item {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 2fr;
  padding: 15px 20px;
  border-bottom: 1px solid #ddd;
  background: #fff;
  transition: background 0.2s;
  cursor: pointer;
}

.coin-item:hover {
  background: #f0f0f0;
}

/* === PAGINATION === */
.pagination {
  text-align: center;
  padding: 20px;
}

.pagination button {
  padding: 8px 16px;
  margin: 0 10px;
  border: none;
  background: #007bff;
  color: white;
  border-radius: 5px;
  cursor: pointer;
}

/* === CHART AREA === */
.chart-area {
  max-width: 700px;
  margin: 40px auto;
  padding: 20px;
  background: #ffffff;
  border-radius: 8px;
  box-shadow: 0 0 10px rgba(0,0,0,0.05);
  overflow-x: auto;
}

#chart {
  background: #fff;
}

/* === NOTIFICATIONS === */
.notifications {
  position: fixed;
  bottom: 20px;
  right: 20px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  z-index: 999;
}

.notification {
  background: #007bff;
  color: white;
  font-size: 15px;
  padding: 14px 20px;
  font-weight: bold;
  border-radius: 8px;
  animation: fadeInOut 5s ease-in-out forwards;
  box-shadow: 0 0 12px rgba(0,0,0,0.15);
}

@keyframes fadeInOut {
  0% { opacity: 0; transform: translateY(30px); }
  10% { opacity: 1; transform: translateY(0); }
  90% { opacity: 1; }
  100% { opacity: 0; transform: translateY(-20px); }
}

/* === MOBILE RESPONSIVE === */
@media (max-width: 600px) {
  .coin-item,
  .table-header {
    grid-template-columns: 1fr 1fr;
    font-size: 14px;
  }

  .chart-area {
    padding: 10px;
  }

  .tab-buttons {
    flex-direction: column;
    gap: 10px;
  }

  .controls {
    flex-direction: column;
    align-items: stretch;
  }

  .pagination button {
    margin: 10px 0;
    width: 100%;
  }
}
.mobile-nav {
  background: #ffffff;
  padding: 10px 20px;
  box-shadow: 0 1px 6px rgba(0, 0, 0, 0.1);
  position: sticky;
  top: 0;
  z-index: 999;
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-size: 22px;
  font-weight: bold;
  color: #222;
}

.hamburger {
  font-size: 28px;
  cursor: pointer;
  user-select: none;
}

.mobile-menu {
  background: #f9f9f9;
  border-radius: 10px;
  margin-top: 10px;
}

.mobile-menu ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.mobile-menu ul li {
  border-bottom: 1px solid #ddd;
}

.mobile-menu ul li a {
  display: block;
  padding: 12px 20px;
  color: #333;
  text-decoration: none;
  font-weight: 500;
}

.mobile-menu ul li a:hover {
  background-color: #eef7ff;
}

/* Initially hidden */
.hidden {
  display: none;
}