/* Study stats panel */
.study-panel {
  background-color: var(--card-bg);
  border-radius: 16px;
  padding: 20px;
  margin-bottom: 32px;
}

.study-layout {
  display: flex;
  align-items: center;
  gap: 20px;
}

@media (max-width: 580px) {
  .study-layout {
    flex-direction: column;
  }
}

/* Graph */
.donut-wrapper {
  position: relative;
  width: 160px;
  height: 160px;
  flex-shrink: 0;
  margin-left: 6px;
}

@media (max-width: 580px) {
  .donut-wrapper {
    margin-left: 0;
  }
}

.donut-svg {
  width: 100%;
  height: 100%;
  transform: rotate(-90deg);
}

.donut-svg circle.donut-segment {
  stroke-opacity: 0.85;
  cursor: pointer;
}

.donut-center-text {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  text-align: center;
  width: 100%;
  pointer-events: none;
}

.donut-hours {
  font-family: var(--font-outfit);
  font-size: 18px;
  font-weight: var(--font-weight-light);
  color: var(--footer-bg);
  line-height: 1.2;
  letter-spacing: 0.05em;
}

.donut-unit-h {
  font-size: 13px;
  font-weight: var(--font-weight-light);
  margin-left: 2px;
  color: var(--text-sub);
}

.donut-sub {
  display: block;
  font-family: var(--font-outfit);
  font-size: 10px;
  font-weight: var(--font-weight-light);
  letter-spacing: 0.05em;
  color: var(--text-sub);
  margin-top: 4px;
}

/* Right cards list */
.study-logs-list {
  flex: 1;
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.study-log-card {
  position: relative;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 16px 15px;
  background-color: #f8fafc;
  border-radius: 8px;
  overflow: hidden;
}

.study-log-date {
  font-family: var(--font-outfit);
  font-size: 13px;
  font-weight: var(--font-weight-normal);
  color: var(--text-sub);
}

.study-log-duration {
  font-family: var(--font-outfit);
  font-size: 13px;
  font-weight: var(--font-weight-normal);
  color: var(--footer-bg);
}

.study-gauge-track {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 3.5px;
  background-color: #e2e8f0;
  display: flex;
  overflow: hidden;
  border-radius: 0 0 8px 8px;
}

.gauge-chunk {
  height: 100%;
  opacity: 0.85;
}