:root {
  --primary: #1a4d2e;
  --secondary: #f5f7fa;
  --accent: #e2b007;
  --text: #222;
  --link: #1a7f5a;
  --link-hover: #e2b007;
  --sidebar-bg: #fff;
  --sidebar-border: #e5e7eb;
  --shadow: 0 2px 8px rgba(0,0,0,0.06);
  --radius: 10px;
  --font-main: 'Segoe UI', 'Roboto', 'Arial', sans-serif;
}
html, body {
      font-family: var(--font-main);
      color: var(--text);
      background: var(--secondary);
      line-height: 1.6;
}
.modern-link {
  color: var(--link);
  text-decoration: none;
  border-bottom: 2px solid var(--accent);
  transition: color 0.2s, border-bottom 0.2s;
  font-weight: 500;
  word-break: break-word;
}
.modern-link:hover, .modern-link:focus {
  color: var(--link-hover);
  border-bottom: 2px solid var(--link-hover);
  background: #f9f7e8;
  border-radius: 2px;
}

.modern-sidebar {
  background: var(--sidebar-bg);
  border: 1px solid var(--sidebar-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 2rem 1.5rem;
  margin-top: 2rem;
  font-size: 1rem;
  color: var(--text);
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  min-width: 0;
}

.sidebar-section h3 {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--primary);
  margin-bottom: 0.5rem;
  margin-top: 0;
}
.sidebar-section {
  margin-bottom: 0.5rem;
}

.modern-list {
  list-style: none;
  padding: 0;
  margin: 0;
}
.modern-list li {
  margin-bottom: 0.5rem;
  padding-left: 1.2em;
  position: relative;
  word-break: break-word;
}
.modern-list li::before {
  content: "•";
  color: var(--accent);
  position: absolute;
  left: 0;
  font-size: 1.2em;
  line-height: 1;
  top: 0.1em;
}

.main-content table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 2rem;
  background: #fff;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  font-size: 1rem;
}

/* table styles */
.main-content th, .main-content td {
  padding: 0.7em 1em;
  text-align: left;
}

.main-content th {
  background: var(--primary);
  color: #fff;
  font-weight: 600;
  border-bottom: 2px solid var(--accent);
}

.main-content tr:nth-child(even) td {
  background: #f7f7f7;
}

.main-content tr:hover td {
  background: #f5f7fa;
}

.main-content h2, .main-content h3 {
  margin-top: 2rem;
  color: var(--primary);
  font-weight: 700;
}

.main-content h3 {
  font-size: 1.2rem;
  margin-bottom: 0.5rem;
}

/* calendar styles */
.calendar-month {
  margin-bottom: 3rem;
}
.calendar-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 2px;
  background: var(--sidebar-border);
  border-radius: var(--radius);
  overflow: hidden;
}
.calendar-header {
  background: var(--primary);
  color: #fff;
  text-align: center;
  padding: 0.5em 0;
  font-weight: 600;
  font-size: 1rem;
  border-bottom: 1px solid var(--accent);
}
.calendar-cell {
  min-height: 4em;
  background: #fff;
  padding: 0.3em 0.5em;
  border: 1px solid var(--sidebar-border);
  font-size: 0.95em;
  vertical-align: top;
  position: relative;
}
.calendar-cell.empty {
  background: transparent;
  border: none;
}
.calendar-day {
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 0.2em;
}
.calendar-event {
  background: var(--accent);
  color: #222;
  border-radius: 4px;
  padding: 0.1em 0.3em;
  margin-bottom: 0.2em;
  font-size: 0.95em;
  display: block;
  word-break: break-word;
}

.calendar-selector {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.5rem;
  margin-bottom: 1.5rem;
}

.calendar-selector h2 {
  margin: 0;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary);
  letter-spacing: 1px;
}

.calendar-selector button {
  background: var(--primary);
  color: #fff;
  border: none;
  border-radius: 50%;
  width: 2.2em;
  height: 2.2em;
  font-size: 1.3em;
  font-weight: bold;
  cursor: pointer;
  transition: background 0.2s, transform 0.1s;
  box-shadow: 0 1px 4px rgba(0,0,0,0.07);
  display: flex;
  align-items: center;
  justify-content: center;
}

.calendar-selector button:disabled {
  background: #ccc;
  color: #fff;
  cursor: not-allowed;
  opacity: 0.7;
}

.calendar-selector button:not(:disabled):hover,
.calendar-selector button:not(:disabled):focus {
  background: var(--accent);
  color: #222;
  transform: scale(1.08);
}

@media (max-width: 900px) {
  .calendar-grid {
    font-size: 0.95em;
  }
}
@media (max-width: 600px) {
  .calendar-grid {
    font-size: 0.85em;
  }
  .calendar-cell {
    min-height: 2.5em;
    padding: 0.2em 0.3em;
  }
}