body.dark-mode {
    background: #2d3436;
    color: #e0e0e0;
}
body.dark-mode .status-box {
    background: linear-gradient(145deg, #2d3436, #3a3a3a);
    border: 1px solid #444;
}
body.dark-mode .time-display {
    color: #ecf0f1;
}
body.dark-mode .status-label {
    color: #bdc3c7;
}
body.dark-mode .schedule-table {
    background: #3a3a3a;
}
body.dark-mode .schedule-table th {
    background: #444;
    color: #ecf0f1;
}
body.dark-mode .schedule-table td {
    border-bottom: 1px solid #555;
}
body.dark-mode .current-class {
    background: #34495e !important;
}
body.dark-mode .future-class {
    background: #3a3a3a !important;
}
body.dark-mode .past-class {
    background: #2d3436 !important;
    color: #7f8c8d;
}
body.dark-mode .control-btn {
    background: linear-gradient(135deg, #2980b9, #3498db);
}
body.dark-mode .control-btn:hover {
    box-shadow: 0 6px 16px rgba(52, 152, 219, 0.35);
}
body.dark-mode .settings-panel {
    background: rgba(45, 52, 54, 0.95);
    border: 1px solid #444;
}
body.dark-mode .settings-panel h3 {
    color: #ecf0f1;
}
body.dark-mode .settings-panel label {
    color: #bdc3c7;
}
body.dark-mode .settings-panel input[type="number"] {
    background: #3a3a3a;
    color: #ecf0f1;
    border: 1px solid #555;
}
body.dark-mode .settings-panel input[type="file"] {
    background: #3a3a3a;
    color: #ecf0f1;
    border: 1px solid #555;
}
body.dark-mode .file-input-label {
    background: #27ae60;
}
body.dark-mode .file-input-label:hover {
    background: #219150;
}
body.dark-mode .info-container {
    background: #2980b9;
}
body.dark-mode .info-content:before {
    color: #2980b9;
}
body.dark-mode .error-container {
    background: #c0392b;
}
body.dark-mode .error-content:before {
    color: #c0392b;
}
body.dark-mode .reminder-table {
    background: #3a3a3a;
}
body.dark-mode .reminder-table th {
    background: #444;
    color: #ecf0f1;
}
body.dark-mode .reminder-table td {
    border-bottom: 1px solid #555;
}
body.dark-mode .reminder-table td input,
body.dark-mode .reminder-table td select {
    background: #3a3a3a;
    color: #ecf0f1;
    border: 1px solid #555;
}
body.dark-mode .reminder-table td button {
    background: #e74c3c;
}
body.dark-mode .reminder-table td button:hover {
    background: #c0392b;
}
body.dark-mode .action-btn {
    background: #27ae60;
}
body.dark-mode .action-btn:hover {
    box-shadow: 0 6px 16px rgba(39, 174, 96, 0.35);
}