#date-calc {
  background: #0d1b2a;
  border: 1px solid #00d4ff33;
  border-radius: 10px;
  overflow: hidden;
}

#date-calc h2 {
  font-size: 0.8rem;
  color: #00d4ff;
  letter-spacing: 3px;
  text-transform: uppercase;
  text-align: center;
  padding: 12px;
  margin: 0;
  border-bottom: 1px solid #00d4ff22;
}

.mode-bar {
  display: flex;
  border-bottom: 1px solid #00d4ff22;
}

.mode-btn {
  flex: 1;
  padding: 9px 6px;
  background: transparent;
  border: none;
  border-radius: 0;
  color: #555;
  font-size: 0.72rem;
  letter-spacing: 1px;
  text-transform: uppercase;
  cursor: pointer;
  font-family: inherit;
  transition: color 0.2s, background 0.2s;
}

.mode-btn:hover { background: #00d4ff0a; color: #aaa; }
.mode-btn.active { color: #00d4ff; background: #00d4ff11; border-bottom: 2px solid #00d4ff; }

.dc-panel { display: none; flex-direction: column; }
.dc-panel.active { display: flex; }

.dc-field {
  display: flex;
  flex-direction: column;
  padding: 12px 16px 8px;
  border-bottom: 1px solid #00d4ff11;
  gap: 4px;
}

.dc-field-label {
  font-size: 0.65rem;
  color: #555;
  letter-spacing: 1.5px;
  text-transform: uppercase;
}

.dc-field input[type="date"] {
  background: transparent;
  border: none;
  border-bottom: 1px solid #00d4ff33;
  border-radius: 0;
  color: #fff;
  font-family: inherit;
  font-size: 0.95rem;
  padding: 4px 0;
  width: 100%;
  outline: none;
}

.dc-field input[type="date"]:focus { border-bottom-color: #00d4ff; }
.dc-field input[type="date"]::-webkit-calendar-picker-indicator { filter: invert(0.6); cursor: pointer; }

.op-toggle {
  display: flex;
  margin: 12px 16px 0;
  border: 1px solid #00d4ff33;
  border-radius: 6px;
  overflow: hidden;
}

.op-btn {
  flex: 1;
  padding: 6px;
  background: transparent;
  border: none;
  border-radius: 0;
  color: #555;
  font-size: 0.72rem;
  letter-spacing: 1px;
  text-transform: uppercase;
  cursor: pointer;
  font-family: inherit;
  transition: color 0.2s, background 0.2s;
}

.op-btn.active { background: #00d4ff22; color: #00d4ff; }
.op-btn:hover:not(.active) { background: #00d4ff0a; color: #aaa; }

.dc-units { display: flex; flex-direction: column; padding: 6px 16px 2px; }

.dc-unit-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 7px 0;
  border-bottom: 1px solid #00d4ff0d;
}

.dc-unit-row:last-child { border-bottom: none; }
.dc-unit-label { font-size: 0.8rem; color: #aaa; }

.dc-spinner { display: flex; align-items: center; gap: 6px; }

.dc-spinner button {
  width: 26px;
  height: 26px;
  padding: 0;
  font-size: 1rem;
  line-height: 1;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.dc-spinner input {
  width: 48px;
  text-align: center;
  background: transparent;
  border: none;
  border-bottom: 1px solid #00d4ff33;
  border-radius: 0;
  color: #fff;
  font-family: inherit;
  font-size: 0.9rem;
  padding: 2px 0;
  outline: none;
}

.dc-spinner input:focus { border-bottom-color: #00d4ff; }

.dc-result {
  margin: 12px 16px 16px;
  background: #060f18;
  border: 1px solid #00d4ff22;
  border-radius: 8px;
  padding: 12px 14px;
  min-height: 58px;
}

.dc-result .dc-res-label {
  font-size: 0.63rem;
  color: #555;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  margin-bottom: 8px;
}

.diff-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 6px;
  text-align: center;
}

.diff-unit { display: flex; flex-direction: column; gap: 2px; }
.diff-unit .val { font-size: 1.2rem; color: #00d4ff; }
.diff-unit .lbl { font-size: 0.6rem; color: #555; letter-spacing: 1px; text-transform: uppercase; }

.dc-res-date { font-size: 1.1rem; color: #00d4ff; letter-spacing: 1px; }
.dc-res-weekday { font-size: 0.72rem; color: #555; margin-top: 3px; letter-spacing: 1px; }