/* 시간 계산기 전용 스타일 */

nav { max-width: 760px; }
main { max-width: 760px; }

.card-title {
  font-size: 0.95rem;
  font-weight: 800;
  color: var(--text);
  margin-bottom: 0.75rem;
}

.mode-tabs {
  display: flex;
  gap: 0.35rem;
  margin-bottom: 0.85rem;
}

.mode-tab {
  flex: 1;
  padding: 0.6rem 0.85rem;
  font-size: 0.88rem;
  font-weight: 600;
  background: var(--surface);
  color: var(--text-sub);
  border: 1px solid var(--border);
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.15s;
  font-family: inherit;
}
.mode-tab:hover {
  border-color: var(--text-sub);
  color: var(--text);
}
.mode-tab.active {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
}

.tc-card {
  padding: 1rem 1.1rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  margin-bottom: 1rem;
}

.tc-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.7rem;
}

.tc-field {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  min-width: 0;
}

.tc-label {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--text-sub);
}

.tc-field input[type="time"],
.tc-field input[type="number"] {
  padding: 0.6rem 0.75rem;
  font-size: 1.05rem;
  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  font-weight: 700;
  border: 1px solid var(--border);
  border-radius: 7px;
  background: var(--bg);
  color: var(--text);
  outline: none;
  transition: border-color 0.15s;
  font-variant-numeric: tabular-nums;
}
.tc-field input:focus {
  border-color: var(--primary);
}

.tc-op-row {
  display: flex;
  gap: 0.4rem;
}

.tc-radio {
  flex: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.3rem;
  cursor: pointer;
  padding: 0.55rem 0.4rem;
  font-size: 0.88rem;
  font-weight: 600;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 7px;
  transition: all 0.15s;
}
.tc-radio:hover { border-color: var(--text-sub); }
.tc-radio input { accent-color: var(--primary); }

.tc-hm-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.7rem;
  margin-top: 0.7rem;
}

.tc-check {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  margin-top: 0.85rem;
  padding-top: 0.85rem;
  border-top: 1px dashed var(--border);
  font-size: 0.88rem;
  color: var(--text);
  cursor: pointer;
  user-select: none;
  flex-wrap: wrap;
}
.tc-check input[type="checkbox"] {
  accent-color: var(--primary);
  width: 1.05rem;
  height: 1.05rem;
}
.tc-check input[type="number"] {
  width: 76px;
  padding: 0.35rem 0.55rem;
  font-size: 0.92rem;
  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  font-weight: 700;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--bg);
  color: var(--text);
  outline: none;
  margin-left: 0.4rem;
}
.tc-check input[type="number"]:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}
.tc-unit {
  color: var(--text-sub);
  font-size: 0.85rem;
}

.tc-result-card {
  margin-top: 1rem;
  padding: 0.95rem 1.1rem;
  background: rgba(99, 102, 241, 0.07);
  border: 1px solid rgba(99, 102, 241, 0.3);
  border-radius: 9px;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.tc-big {
  font-size: 1.7rem;
  font-weight: 800;
  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  color: var(--primary);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.01em;
}

.tc-sub {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 1rem;
  font-size: 0.85rem;
  color: var(--text-sub);
}
.tc-sub b {
  color: var(--text);
  font-weight: 700;
  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  font-variant-numeric: tabular-nums;
}

.tc-note {
  margin-top: 0.2rem;
  font-size: 0.83rem;
  color: var(--text-sub);
  font-style: italic;
}

.tc-sum-list {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  margin-bottom: 0.55rem;
}

.tc-sum-row {
  display: grid;
  grid-template-columns: 1fr 1fr auto;
  gap: 0.45rem;
  align-items: center;
}

.tc-sum-row input {
  padding: 0.55rem 0.7rem;
  font-size: 1rem;
  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  font-weight: 700;
  border: 1px solid var(--border);
  border-radius: 7px;
  background: var(--bg);
  color: var(--text);
  outline: none;
  font-variant-numeric: tabular-nums;
}
.tc-sum-row input:focus {
  border-color: var(--primary);
}

.btn-row-remove {
  width: 30px;
  height: 30px;
  font-size: 0.85rem;
  background: transparent;
  color: var(--text-sub);
  border: 1px solid var(--border);
  border-radius: 50%;
  cursor: pointer;
  transition: all 0.15s;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.btn-row-remove:hover {
  background: rgba(239, 68, 68, 0.08);
  border-color: var(--error);
  color: var(--error);
}

.btn-add-row {
  width: 100%;
  padding: 0.6rem 1rem;
  font-size: 0.88rem;
  font-weight: 600;
  background: var(--bg);
  color: var(--text-sub);
  border: 1px dashed var(--border);
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.15s;
  font-family: inherit;
}
.btn-add-row:hover {
  border-color: var(--primary);
  border-style: solid;
  color: var(--primary);
}

.example-card {
  padding: 1rem 1.1rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  margin-bottom: 1.5rem;
}

.example-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}
.example-list li {
  font-size: 0.88rem;
  line-height: 1.55;
  color: var(--text-sub);
  padding-left: 1.1rem;
  position: relative;
}
.example-list li::before {
  content: "·";
  position: absolute;
  left: 0.35rem;
  color: var(--primary);
  font-weight: 800;
}
.example-list b {
  color: var(--text);
  font-weight: 700;
}

@media (max-width: 600px) {
  .tc-grid { grid-template-columns: 1fr; }
  .tc-hm-row { grid-template-columns: 1fr 1fr; }
  .mode-tab { font-size: 0.82rem; padding: 0.55rem 0.4rem; }
  .tc-big { font-size: 1.4rem; }
}