Code Playground

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    
  <!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Developer's Calendar</title>
  <link href="https://fonts.googleapis.com/css2?family=Roboto:wght@400;500&display=swap" rel="stylesheet">
  <style>
    * {
      box-sizing: border-box;
      font-family: 'Roboto', sans-serif;
      margin: 0;
      padding: 0;
    }

body {
      background-color: #f7f9fc;
      display: flex;
      justify-content: center;
      align-items: center;
      height: 100vh;
      color: #333;
      flex-direction: column;
    }

.calendar {
      width: 90%;
      max-width: 500px;
      text-align: center;
      background: #fff;
      border-radius: 10px;
      box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
      padding: 20px;
    }

h2 {
      font-size: 1.6em;
      color: #333;
      margin-bottom: 1em;
    }

.controls {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 20px;
    }

#monthSelect {
      font-size: 0.9em;
      padding: 8px 12px;
      border-radius: 5px;
      border: 1px solid #ddd;
      background: #f7f9fc;
      color: #333;
      outline: none;
    }

#resetCalendar {
      background-color: #ff6b6b;
      color: #fff;
      border: none;
      padding: 8px 12px;
      border-radius: 5px;
      font-size: 0.9em;
      cursor: pointer;
      transition: background 0.2s;
    }

#resetCalendar:hover {
      background-color: #ff5252;
    }

.calendar-grid {
      display: grid;
      grid-template-columns: repeat(7, 1fr);
      gap: 8px;
    }

.day {
      padding: 15px;
      background-color: #f0f3f7;
      color: #333;
      cursor: pointer;
      border-radius: 8px;
      transition: background-color 0.2s;
      min-height: 70px;
      position: relative;
      font-size: 0.9em;
    }

.day:hover {
      background-color: #e0e6ef;
    }

.note {
      font-size: 0.75em;
      margin-top: 5px;
      color: #555;
    }

.note-entry {
      border-top: 1px solid #ddd;
      padding-top: 5px;
      margin-top: 5px;
    }

.modal {
      display: none;
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      background-color: rgba(0, 0, 0, 0.4);
      justify-content: center;
      align-items: center;
    }

.modal-content {
      background-color: #fff;
      padding: 20px;
      border-radius: 8px;
      width: 90%;
      max-width: 300px;
      text-align: left;
      box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
    }

.close {
      font-size: 1.5em;
      cursor: pointer;
      color: #888;
      float: right;
    }

.close:hover {
      color: #555;
    }

textarea, input[type="time"] {
      width: 100%;
      padding: 10px;
      margin-top: 10px;
      border: 1px solid #ddd;
      border-radius: 5px;
      font-size: 0.9em;
    }

#saveNote {
      background-color: #4caf50;
      color: white;
      padding: 10px;
      margin-top: 15px;
      border: none;
      cursor: pointer;
      width: 100%;
      border-radius: 5px;
      font-size: 1em;
      transition: background-color 0.2s;
    }

#saveNote:hover {
      background-color: #43a047;
    }
  </style>
</head>
<body>
  <div class="calendar">
    <h2>Developer's Calendar - 2025</h2>
    <div class="controls">
      <select id="monthSelect">
        <option value="0">January</option>
        <option value="1">February</option>
        <option value="2">March</option>
        <option value="3">April</option>
        <option value="4">May</option>
        <option value="5">June</option>
        <option value="6">July</option>
        <option value="7">August</option>
        <option value="8">September</option>
        <option value="9">October</option>
        <option value="10">November</option>
        <option value="11">December</option>
      </select>
      <button id="resetCalendar">Reset Calendar</button>
    </div>
    <div class="calendar-grid">
      
    </div>
  </div>

<div id="noteModal" class="modal">
    <div class="modal-content">
      <span class="close">×</span>
      <h3>Add Note</h3>
      <p id="selectedDate"></p>
      <label for="time">Select Time:</label>
      <input type="time" id="time" required>
      <label for="note">Note:</label>
      <textarea id="note" rows="2" placeholder="Enter your note...">

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