body { font-family: 'Inter', sans-serif; background-color: #f3f4f6; }
.tab-button { padding: 0.75rem 1.5rem; cursor: pointer; border-bottom: 2px solid transparent; transition: all 0.3s ease; font-weight: 500; }
.tab-button.active { border-bottom-color: #4f46e5; color: #4f46e5; }
.card { background-color: white; border-radius: 0.5rem; box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06); padding: 1.5rem; margin-bottom: 1rem; }
.progress-bar-bg { background-color: #e5e7eb; border-radius: 0.25rem; overflow: hidden; }
.progress-bar { background-color: #4f46e5; height: 100%; transition: width 0.5s ease-in-out; text-align: center; color: white; font-size: 0.75rem; line-height: 1rem; }
.tooltip { position: relative; display: inline-block; }
.tooltip .tooltiptext { visibility: hidden; width: 220px; background-color: #555; color: #fff; text-align: left; border-radius: 6px; padding: 8px; position: absolute; z-index: 1; bottom: 125%; left: 50%; margin-left: -110px; opacity: 0; transition: opacity 0.3s; font-size: 0.8rem; line-height: 1.2; }
.tooltip .tooltiptext::after { content: ""; position: absolute; top: 100%; left: 50%; margin-left: -5px; border-width: 5px; border-style: solid; border-color: #555 transparent transparent transparent; }
.tooltip:hover .tooltiptext { visibility: visible; opacity: 1; }
.modal { display: none; position: fixed; z-index: 100; left: 0; top: 0; width: 100%; height: 100%; overflow: auto; background-color: rgba(0,0,0,0.4); }
.modal-content { background-color: #fefefe; margin: 10% auto; padding: 20px; border: 1px solid #888; width: 80%; max-width: 600px; border-radius: 0.5rem; }
.close-button { color: #aaa; float: right; font-size: 28px; font-weight: bold; }
.close-button:hover, .close-button:focus { color: black; text-decoration: none; cursor: pointer; }
/* Scrollbar */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: #f1f1f1; border-radius: 10px; }
::-webkit-scrollbar-thumb { background: #888; border-radius: 10px; }
::-webkit-scrollbar-thumb:hover { background: #555; }