body {
  font-family: Arial, sans-serif;
  padding: 15px;
  background-color: #f0f2f5;
  color: #333;
  margin: 0;
}

h1 {
  text-align: center;
  margin-bottom: 20px;
  color: #2c3e50;
  font-size: 1.8em;
}

/* Table styles */
table {
  border-collapse: collapse;
  width: 100%;
  max-width: 1000px;
  margin: 0 auto;
  background: #fff;
  border-radius: 10px;
  overflow: hidden;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

th, td {
  border: 1px solid #ccc;
  text-align: center;
  padding: 10px;
  vertical-align: top;
}

th {
  background-color: #e0e0e0;
  font-weight: bold;
}

td {
  transition: background-color 0.2s;
}

td:hover {
  background-color: #f7f7f7;
}

.subject {
  font-weight: bold;
  color: #1f618d;
}

.teacher {
  font-size: 0.9em;
  color: #2c3e50;
}

.room {
  font-size: 0.8em;
  color: #666;
}

/*
@media (max-width: 768px) {
  table, thead, tbody, th, td, tr {
    display: block;
    width: 100%;
  }

  tr {
    margin-bottom: 15px;
    border-bottom: 2px solid #ddd;
    padding-bottom: 10px;
  }

  th {
    display: none;
  }

  td {
    text-align: left;
    padding: 10px 10px 10px 45%;
    position: relative;
    border: none;
    border-bottom: 1px solid #eee;
  }

  td::before {
    position: absolute;
    left: 10px;
    top: 10px;
    width: 40%;
    white-space: nowrap;
    font-weight: bold;
    content: attr(data-label);
  }

  td:last-child {
    border-bottom: 0;
  }
}
@media (max-width: 480px) {
  body { padding: 10px; }
  h1 { font-size: 1.5em; }
  td::before { font-size: 0.9em; }
  td { padding-left: 50%; }
}
*/
@media (max-width: 768px) {
  table, thead, tbody, th, td, tr {
    display: block;
    width: 100%;
  }

  tr {
    margin-bottom: 15px;
    padding: 0;
    border-bottom: 2px solid #ddd;
  }

  th {
    display: none;
  }

  td {
    position: relative;
    padding-left: 50%;
    text-align: left;
    border: none;
    border-bottom: 1px solid #eee;
    min-height: 50px; /* ensures consistent vertical spacing */
    box-sizing: border-box;
  }

  td::before {
    position: absolute;
    top: 10px;
    left: 10px;
    width: 40%;
    font-weight: bold;
    white-space: nowrap;
    content: attr(data-label);
  }

  /* make content stack nicely */
  td > .subject,
  td > .teacher,
  td > .room {
    display: block;
    margin: 2px 0;
  }

  td:last-child {
    border-bottom: 0;
  }
}

/* Extra small screens */
@media (max-width: 480px) {
  td {
    padding-left: 55%;
  }
  td::before {
    width: 45%;
  }
}