body {
    font-family: Arial, sans-serif;
    line-height: 1.6;
    margin: 0;
    padding: 0;
    background-color: #f5f5f5;
    color: #333;
}

header {
    background-color: #1e88e5;
    color: white;
    padding: 1rem 0;
    text-align: center;
}

header h1 {
    margin: 0;
    font-size: 1.5rem;
    line-height: 1.3;
}

header h2 {
    margin: 0.5rem 0;
    font-size: 1.2rem;
    font-weight: normal;
}

.date {
    font-size: 1.1rem;
    margin: 0.5rem 0;
    font-weight: bold;
}

.changes-link {
    display: inline-block;
    margin: 1rem auto;
    padding: 0.8rem 1.5rem;
    background-color: #ff9800;
    color: white;
    text-decoration: none;
    border-radius: 4px;
    font-weight: bold;
    transition: background-color 0.3s;
}

.changes-link:hover {
    background-color: #f57c00;
}

.container {
    max-width: 1200px;
    margin: 2rem auto;
    padding: 0 1rem;
}

.class-selector {
    margin-bottom: 1.5rem;
    text-align: center;
}

.class-buttons {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.5rem;
    margin-top: 1rem;
}

.class-btn {
    padding: 0.5rem 1rem;
    border: none;
    border-radius: 6px;
    background-color: #1e88e5;
    color: white;
    font-weight: bold;
    cursor: pointer;
    transition: background-color 0.3s;
}

.class-btn:hover {
    background-color: #1565c0;
}

.bells-schedule {
    display: flex;
    justify-content: space-around;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

.bells-column {
    background-color: white;
    padding: 1rem;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    margin: 0.5rem;
    flex: 1;
    min-width: 250px;
}

.bells-column h3 {
    margin-top: 0;
    color: #1e88e5;
    text-align: center;
}

.bells-column ul {
    padding-left: 1.5rem;
}

.bells-column li {
    margin-bottom: 0.5rem;
}

.schedule {
    background-color: white;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    overflow-x: auto;
    padding: 0.5rem;
}

.schedule table {
    width: 100%;
    min-width: 550px;
    border-collapse: collapse;
}

th, td {
    padding: 0.75rem;
    text-align: left;
    border: 1px solid #ddd;
    white-space: nowrap;
    font-size: 0.95rem;
}

th {
    background-color: #e3f2fd;
    font-weight: bold;
}

tr:nth-child(even) {
    background-color: #f9f9f9;
}

footer {
    text-align: center;
    padding: 1rem 0;
    background-color: #1e88e5;
    color: white;
    margin-top: 2rem;
}

/* 📱 Мобильная адаптация */
@media (max-width: 768px) {
    header h1 {
        font-size: 1rem;
        line-height: 1.3;
    }

    header h2 {
        font-size: 0.9rem;
    }

    .date {
        font-size: 0.9rem;
    }

    .changes-link {
        padding: 0.6rem 1rem;
        font-size: 0.9rem;
    }

    .class-buttons {
        flex-wrap: wrap;
        justify-content: center;
        gap: 0.4rem;
    }

    .class-btn {
        padding: 0.4rem 0.8rem;
        font-size: 0.9rem;
    }

    .bells-column {
        width: 100%;
        margin-bottom: 1rem;
    }

    .schedule {
        overflow-x: auto;
        padding: 0.5rem;
    }

    .schedule table {
        font-size: 0.9rem;
        min-width: 550px;
    }

    th, td {
        padding: 0.5rem;
    }

    .container {
        padding: 0 0.5rem;
    }
}
.info-message {
    background-color: #fff;
    color: #d32f2f;
    font-size: 1.2rem;
    font-weight: bold;
    text-align: center;
    padding: 1rem;
    margin-top: 1rem;
    margin-bottom: 1.5rem;
}
@keyframes pulse {
  0%   { opacity: 1; }
  50%  { opacity: 0.5; }
  100% { opacity: 1; }
}

.info-message {
    background-color: #fff;
    color: #d32f2f;
    font-size: 1.2rem;
    font-weight: bold;
    text-align: center;
    padding: 1rem;
    margin-top: 1rem;
    margin-bottom: 1.5rem;
    border: 2px solid #d32f2f;
    border-radius: 8px;
    animation: pulse 2s infinite;
}



.card-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1rem;
  align-items: stretch;
}

.day-card {
  flex: 1 1 250px;
  min-width: 220px;
  max-width: 300px;
  height: 100%;
  background: #fffde7;
  padding: 1rem;
  border-radius: 12px;
  box-shadow: 2px 2px 8px rgba(0,0,0,0.1);
  display: flex;
  flex-direction: column;
  border: 2px solid transparent;
  transition: border 0.3s;
}

.day-card.today {
  border: 2px solid #f44336;
}

.day-card h3 {
  margin: 0 0 0.5rem;
  font-size: 1.1rem;
  color: #333;
}

.day-card ul {
  flex-grow: 1;
  list-style: none;
  padding-left: 0;
  margin: 0;
}

.day-card li {
  font-size: 0.95rem;
  margin-bottom: 0.4rem;
}