:root {
  --primary-color: #2c5282;
  --secondary-color: #f7fafc;
  --text-color: #2d3748;
  --border-color: #e2e8f0;
  --highlight-next: #c6f6d5;
  --highlight-next-text: #2f855a;
  --highlight-past: #edf2f7;
  --highlight-past-text: #718096;
  --completed-color: #a0aec0;
  --completed-bg: #fdfdfd;
  --completed-green-bg: #d4edda;
  --completed-green-text: #155724;
  /* Chart Colors */
  --chart-completed: #48bb78; /* Vibrant Green */
  --chart-remaining: #cbd5e0; /* Clear Grey */
  --chart-completed-hover: #38a169;
  --chart-remaining-hover: #a0aec0;
}

body {
  font-family: "Tajawal", sans-serif;
  background-color: var(--secondary-color);
  color: var(--text-color);
  margin: 0;
  padding: 20px;
}

.container {
  width: 100%;
  max-width: 1000px;
  margin: auto;
  background-color: #fff;
  border-radius: 12px;
  box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.1),
    0 10px 10px -5px rgba(0, 0, 0, 0.04);
  overflow: hidden;
}

header {
  background: linear-gradient(135deg, var(--primary-color), #4c7aaf);
  color: #fff;
  padding: 25px;
  text-align: center;
  border-bottom: 5px solid #63b3ed;
}

header h1 {
  margin: 0;
  font-size: 2em;
  font-weight: 700;
}
header p {
  margin: 5px 0 0;
  opacity: 0.9;
  font-size: 1.1em;
}

.summary {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 10px;
  padding: 15px 20px;
  background: #fcfcfd;
  border-bottom: 1px solid var(--border-color);
}

.summary-item {
  text-align: center;
  padding: 10px;
  border-radius: 8px;
  background-color: #f7fafc;
}
.summary-item span {
  display: block;
  font-weight: 700;
  color: var(--primary-color);
  font-size: 1.2em;
  margin-top: 4px;
}

.chart-section {
  padding: 20px;
  background-color: #fff;
  border-bottom: 1px solid var(--border-color);
}
.chart-container {
  position: relative;
  height: 250px;
  width: 100%;
  max-width: 400px;
  margin: auto;
}

main {
  padding: 0;
  overflow-x: auto;
}
table {
  width: 100%;
  border-collapse: collapse;
  text-align: center;
}
th,
td {
  padding: 14px 10px;
  border-bottom: 1px solid var(--border-color);
  vertical-align: middle;
}
thead {
  background-color: #f8f9fa;
}
th {
  font-weight: 700;
  color: #4a5568;
  font-size: 0.85em;
  text-transform: uppercase;
}
tbody tr:last-child td {
  border-bottom: none;
}
tbody tr:hover {
  background-color: #f1f5f9;
}

.status {
  padding: 5px 12px;
  border-radius: 16px;
  font-size: 0.9em;
  font-weight: 500;
  display: inline-block;
}
.status-past {
  background-color: var(--highlight-past);
  color: var(--highlight-past-text);
}
.status-next {
  background-color: var(--highlight-next);
  color: var(--highlight-next-text);
}
.status-upcoming {
  background-color: #feebc8;
  color: #9c4221;
}
.status-done {
  background-color: var(--completed-green-bg);
  color: var(--completed-green-text);
}

.row-past {
  background-color: var(--highlight-past);
  color: var(--highlight-past-text);
}
.row-next {
  background-color: var(--highlight-next) !important;
  font-weight: 700;
}
.completed-row {
  text-decoration: line-through;
  color: var(--completed-color);
  background-color: var(--completed-bg);
}
.completed-row .status {
  text-decoration: none;
}

input[type="checkbox"] {
  transform: scale(1.5);
  cursor: pointer;
  accent-color: var(--primary-color);
}