body {
  display: flex;
  justify-content: center;
  align-items: center;
  background-color: var(--md-sys-color-surface);
  color: var(--md-sys-color-on-surface);
  font-family: 'Roboto', sans-serif;
}

:root {
  --md-sys-color-primary: #006A60;
  --md-sys-color-on-primary: #FFFFFF;
  
  --md-sys-color-surface: #1C1B1F;
  --md-sys-color-on-surface: #E6E1E5;

  --md-sys-color-surface-container: #2C2A30;
  --md-sys-color-surface-container-high: #3C393F;
  
  --md-sys-color-on-surface-variant: #C5C6C9;
  --md-sys-color-outline: #6E7976;
  --md-sys-color-error: #B3261E;
}

table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 24px;
  border-radius: 12px;
  overflow: hidden;
  background-color: var(--md-sys-color-surface-container);
}

table thead th {
  font-weight: 500;
  text-align: left;
  padding: 16px 24px;
  background-color: var(--md-sys-color-surface-container-high);
  color: var(--md-sys-color-on-surface-variant);
  font-size: 0.875rem;
  letter-spacing: 0.5px;
  border-bottom: 1px solid var(--md-sys-color-outline);
}

table tbody td {
  text-align: left;
  padding: 16px 24px;
  font-size: 1rem;
  color: var(--md-sys-color-on-surface);
  border-bottom: 1px solid var(--md-sys-color-outline);
}

table tbody tr:nth-child(even) {
  background-color: var(--md-sys-color-surface);
}

table tbody tr:hover {
  background-color: var(--md-sys-color-surface-container-high);
}

button {
  background-color: var(--md-sys-color-primary);
  color: var(--md-sys-color-on-primary);
  border: none;
  border-radius: 20px;
  padding: 0 24px;
  height: 40px;
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: background-color 0.3s, box-shadow 0.3s, transform 0.3s;
}

button:hover {
  background-color: #008577;
  box-shadow: 0 4px 8px rgba(0,0,0,0.3);
  transform: translateY(-1px);
}

button:active {
  background-color: #004D43;
  transform: translateY(1px);
}

.md-card {
  background-color: var(--md-sys-color-surface-container-high);
  color: var(--md-sys-color-on-surface);
  border-radius: 12px;
  padding: 16px;
  width: 750px;
  box-shadow: 0 2px 4px rgba(0,0,0,0.3);
  transition: box-shadow 0.3s;
}

.md-card:hover {
  box-shadow: 0 4px 8px rgba(0,0,0,0.5);
}

.md-card h1 {
  font-size: 1.25rem;
  font-weight: 500;
  text-align: center;
  color: var(--md-sys-color-on-surface);
}

.md-card p {
  font-size: 1rem;
  line-height: 1.5;
  color: var(--md-sys-color-on-surface-variant);
}

.input-group {
  display: flex;
  flex-direction: column;
  position: relative;
  margin-bottom: 24px;
}

.input-group label {
  position: absolute;
  top: 16px;
  left: 16px;
  font-size: 1rem;
  color: var(--md-sys-color-on-surface-variant);
  transition: transform 0.3s, font-size 0.3s;
  pointer-events: none;
}

.input-group input {
  width: 90%;
  height: 16px;
  padding: 24px 16px 8px;
  border: none;
  border-bottom: 1px solid var(--md-sys-color-outline);
  background-color: transparent;
  color: var(--md-sys-color-on-surface);
  outline: none;
}

.action-button {
    display: flex;
    flex-direction: row;
    padding: 20px;
    justify-content: center;
    align-items: center;

}

.action-button .btn-box {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    margin: 10px;
}

.action-button .btn-box p {font-size: 13px;}

.info img {
    width: 20px;
    height: 20px;
}

.info{
    background-color: #3C393F;
}

#shadow {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: #000;
  opacity: 0.3;
  display: none;
}
#message {
  position: fixed;
  top: 40px;
  left: 10%;
  right: 10%;
  background: #fff;
  border-radius: 5px;
  padding: 10px 20px;
  display: none;
  color: #000;
  line-height: 1.4; 
}
#message p {
  margin-bottom: 10px;
}
#message p strong {
  display: block; 
}

.head-btn {
    display: flex;
    flex-direction: row;
}

.git {
    display: flex;
    flex-direction: row;
    justify-content: center;
    align-items: center;
    color: #C5C6C9;
    text-decoration: none;
    transition: color 0.3s ease, transform 0.3s ease; 
}

.git img {
    width: 30px;
    height: 30px;
    padding: 5px;
    transition: transform 0.3s ease, opacity 0.3s ease; 
}

.git:hover {
    color: #008577; 
}

.git:hover img {
    transform: scale(1.1);
    opacity: 0.8; 
}

@media (max-width: 768px) {
  body {
    flex-direction: column;
    padding: 12px;
  }

  .md-card {
    width: 100%;
    max-width: 100%;
    padding: 12px;
  }

  .table-wrapper {
    width: 100%;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch; 
  }

  table {
    min-width: 600px; 
  }

  .input-group input {
    width: 100%;
  }

  .action-button {
    display: grid;
    grid-template-columns: repeat(2, 1fr); 
    padding: 10px;
    
  }

  .action-button .btn-box {
    margin: 6px 0;
    padding: 10px;
    
  }
}

@media (max-width: 480px) {
  button {
    width: 100%;
    height: 48px;
    font-size: 1rem;
  }

  .md-card h1 {
    font-size: 1rem;
  }

  .md-card p {
    font-size: 0.875rem;
  }
}

@media (max-width: 768px) {
  #message {
    left: 5%;
    right: 5%;
    top: 20px;
    padding: 15px; 
    border-radius: 3px;
    max-height: calc(100vh - 40px);
    font-size: 10px;
  }
}