:root {
  --bg: #edf2fa;
  --surface: #ffffff;
  --surface-soft: #f6f9ff;
  --text: #101a2b;
  --muted: #556580;
  --border: #d4deee;
  --primary: #0d5fd3;
  --primary-dark: #08418f;
  --accent: #15325d;
  --ok-bg: #eef8ef;
  --ok-text: #266139;
  --warn-bg: #fff4dd;
  --warn-text: #8a5a00;
  --error-bg: #fff0f0;
  --error-text: #8b1e1e;
  --app-shell-max: 1180px;
  --rail-divider-color: #dde4f1;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: radial-gradient(circle at 20% 0%, #dce8ff 0%, var(--bg) 45%);
  color: var(--text);
  font-family: "IBM Plex Sans", "Segoe UI", "Noto Sans", sans-serif;
}

.hero {
  text-align: center;
  padding-block: 2rem 1.1rem;
}

.hero h1 {
  margin: 0;
  font-size: 2rem;
}

.hero p {
  margin: 0.6rem 0 0;
  color: var(--muted);
}

.layout {
  margin: 0 auto 1.7rem;
  display: grid;
  gap: 1rem;
}

@media (min-width: 1060px) {
  .layout {
    grid-template-columns: 1.15fr 1fr;
    align-items: start;
  }
}

.panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 1rem;
}

.panel h2,
.panel h3 {
  margin: 0;
}

.calculator-panel {
  display: grid;
  gap: 1rem;
}

.mode-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.tab {
  border: 1px solid #c3d2eb;
  border-radius: 999px;
  padding: 0.45rem 0.78rem;
  background: #fff;
  color: #223754;
  font-weight: 700;
  cursor: pointer;
}

.tab.is-active {
  border-color: var(--primary);
  background: #e8f1ff;
  color: #073f8a;
}

.mode-panel {
  display: grid;
  gap: 0.95rem;
}

label {
  display: grid;
  gap: 0.5rem;
  font-size: 0.94rem;
  font-weight: 600;
}

input,
select,
textarea,
button {
  font: inherit;
}

input[type="date"],
input[type="number"],
input[type="time"],
input[type="text"],
select,
textarea {
  border: 1px solid #bdcde4;
  border-radius: 9px;
  padding: 0.58rem 0.68rem;
  background: #fff;
  color: inherit;
}

input:disabled,
select:disabled,
textarea:disabled {
  background: #eef3fb;
  color: #7a879b;
  cursor: not-allowed;
}

textarea {
  resize: vertical;
}

input:focus,
select:focus,
textarea:focus,
button:focus-visible,
summary:focus-visible,
a:focus-visible {
  outline: 2px solid #9ec3ff;
  outline-offset: 2px;
}

.form-grid {
  display: grid;
  gap: 0.95rem;
}

@media (min-width: 740px) {
  .form-grid.two {
    grid-template-columns: 1fr 1fr;
  }

  .form-grid.three {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.inline-label {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 600;
}

.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
}

button {
  border: 0;
  border-radius: 9px;
  padding: 0.6rem 0.86rem;
  background: var(--primary);
  color: #fff;
  cursor: pointer;
  font-weight: 700;
}

button:hover {
  background: var(--primary-dark);
}

button.secondary {
  background: var(--accent);
}

button.secondary:hover {
  background: #0f2240;
}

button.ghost {
  border: 1px solid #bacbe6;
  background: #fff;
  color: #1c3150;
}

button.ghost:hover {
  background: #f3f8ff;
}

.small-note {
  margin: 0;
  color: var(--muted);
  font-size: 0.88rem;
  line-height: 1.42;
}

.advanced-panel {
  border: 1px solid var(--border);
  border-radius: 11px;
  padding: 0.88rem;
  background: var(--surface-soft);
  display: grid;
  gap: 1rem;
}

.advanced-panel summary {
  cursor: pointer;
  font-weight: 700;
  margin-bottom: 0.1rem;
}

#workCalendarPanel {
  gap: 1.15rem;
}

#workCalendarPanel .form-grid,
#workCalendarPanel .custom-closures .form-grid,
#workCalendarPanel .preset-box .form-grid {
  align-items: start;
  gap: 1rem 0.95rem;
}

#workCalendarPanel .inline-label {
  align-items: flex-start;
  gap: 0.52rem;
  line-height: 1.35;
  padding-top: 0.12rem;
}

#workCalendarPanel .custom-closures h3,
#workCalendarPanel .preset-box h3 {
  margin: 0;
}

#workCalendarPanel .mini-calendar-options .small-note,
#workCalendarPanel #holidaySourceNote {
  align-self: center;
}

@media (min-width: 740px) {
  #workCalendarPanel .form-grid.two,
  #workCalendarPanel .form-grid.three {
    grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
  }
}

.weekday-chooser {
  border: 1px dashed #afc3e4;
  border-radius: 10px;
  padding: 0.72rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.82rem;
}

.weekday-chooser legend {
  font-weight: 700;
  padding: 0 0.25rem;
}

.weekday-chooser label {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  margin: 0;
}

.custom-closures,
.preset-box {
  border: 1px solid var(--border);
  border-radius: 11px;
  padding: 0.9rem;
  background: #fff;
  display: grid;
  gap: 1rem;
}

.bulk-actions {
  display: grid;
  align-content: start;
  gap: 0.8rem;
  padding-top: 0.12rem;
}

.custom-closures .form-grid > button,
.preset-box .form-grid > button {
  align-self: end;
  justify-self: start;
  width: auto;
  min-width: 10rem;
}

.mini-calendar-options .small-note {
  align-self: end;
}

.closure-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.45rem;
}

.closure-list li {
  border: 1px solid var(--border);
  background: var(--surface-soft);
  border-radius: 9px;
  padding: 0.45rem 0.56rem;
  display: flex;
  justify-content: space-between;
  gap: 0.5rem;
  align-items: center;
}

.closure-list .meta {
  display: grid;
  gap: 0.1rem;
  min-width: 0;
}

.closure-list .meta strong,
.closure-list .meta span {
  overflow-wrap: anywhere;
}

.result-panel {
  display: grid;
  gap: 0.8rem;
}

.summary {
  margin: 0;
  padding: 0.58rem 0.66rem;
  border: 1px solid #c9d9f1;
  background: #f5f9ff;
  border-radius: 10px;
  font-weight: 700;
}

.message {
  margin: 0;
  padding: 0.65rem 0.7rem;
  border-radius: 10px;
  font-size: 0.92rem;
}

.message.warn {
  border: 1px solid #ffd999;
  background: var(--warn-bg);
  color: var(--warn-text);
}

.message.error {
  border: 1px solid #f6c0c0;
  background: var(--error-bg);
  color: var(--error-text);
}

.message.info {
  border: 1px solid #bfd7ff;
  background: #f2f7ff;
  color: #23508d;
}

.result-grid {
  display: grid;
  gap: 0.65rem;
}

@media (min-width: 760px) {
  .result-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.metric {
  border: 1px solid var(--border);
  border-radius: 11px;
  background: #f9fbff;
  padding: 0.66rem;
  display: grid;
  gap: 0.25rem;
}

.metric span {
  color: var(--muted);
  font-size: 0.87rem;
}

.metric strong {
  font-size: 1.15rem;
}

.metric small {
  color: var(--muted);
  font-size: 0.8rem;
  line-height: 1.35;
}

.mini-calendar {
  border: 1px solid var(--border);
  border-radius: 11px;
  padding: 0.66rem;
  background: #fff;
  display: grid;
  gap: 0.55rem;
}

.mini-calendar h3 {
  font-size: 0.96rem;
}

.mini-weekdays {
  display: grid;
  grid-template-columns: repeat(7, minmax(0, 1fr));
  gap: 0.35rem;
}

.mini-weekday {
  text-align: center;
  font-size: 0.72rem;
  color: var(--muted);
  font-weight: 700;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

.mini-strip {
  display: grid;
  grid-template-columns: repeat(7, minmax(0, 1fr));
  gap: 0.35rem;
}

.day-pad {
  min-height: 58px;
  border-radius: 8px;
}

.day-pill {
  border: 1px solid #d5e1f4;
  border-radius: 8px;
  padding: 0.28rem 0.36rem;
  font-size: 0.76rem;
  background: #fff;
  min-height: 58px;
  display: grid;
  align-content: start;
  gap: 0.05rem;
}

.day-pill-day {
  font-size: 0.96rem;
  line-height: 1.05;
  font-weight: 700;
}

.day-pill-month {
  color: var(--muted);
  font-size: 0.68rem;
  text-transform: uppercase;
  line-height: 1.2;
}

.day-pill.start,
.day-pill.end {
  border-color: #4f8df0;
  background: #e8f1ff;
}

.day-pill.weeklyOff {
  background: #fdf3e6;
}

.day-pill.holiday {
  background: #e9f7ec;
}

.day-pill.custom {
  background: #f5eefa;
}

.details-block {
  border: 1px solid var(--border);
  border-radius: 11px;
  background: #fff;
  padding: 0.6rem;
}

.details-block summary {
  cursor: pointer;
  font-weight: 700;
}

.details-block ul {
  margin: 0.6rem 0 0;
  padding-left: 1.2rem;
  color: var(--muted);
  display: grid;
  gap: 0.4rem;
}

.action-bar {
  margin-top: 0.2rem;
}

.guide-layout {
  margin: 0 auto 1.5rem;
  display: grid;
  gap: 0.8rem;
}

@media (min-width: 860px) {
  .guide-layout {
    grid-template-columns: 1fr 1fr 1fr;
  }
}

.guide-card {
  border: 1px solid var(--border);
  background: var(--surface);
  border-radius: 12px;
  padding: 0.85rem;
}

.guide-card h2 {
  margin: 0;
  font-size: 1rem;
}

.guide-card p {
  color: var(--muted);
  margin: 0.55rem 0 0;
  line-height: 1.5;
}

.faq-card details {
  margin-top: 0.5rem;
  border: 1px solid #dce7f7;
  border-radius: 10px;
  padding: 0.5rem 0.6rem;
  background: #f8fbff;
}

.faq-card summary {
  cursor: pointer;
  font-weight: 700;
}

.tool-footer {
  margin-top: 56px;
  padding-bottom: 28px;
}

.tool-footer__inner {
  text-align: left;
}

.tool-footer__nav {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 16px;
  margin-bottom: 12px;
}

.tool-footer__nav a {
  color: inherit;
  text-decoration: none;
}

.tool-footer__nav a:hover,
.tool-footer__nav a:focus-visible {
  text-decoration: underline;
}

.tool-footer__meta,
.tool-footer__note {
  margin: 0 0 10px;
  line-height: 1.6;
  font-size: 0.95rem;
  color: #4b5563;
}

.stack {
  display: grid;
  gap: 0.45rem;
}

.badge-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.badge {
  display: inline-flex;
  align-items: center;
  border-radius: 999px;
  padding: 0.28rem 0.62rem;
  font-size: 0.78rem;
  font-weight: 700;
}

.badge-info {
  background: #edf5ff;
  color: #25528d;
  border: 1px solid #cfe1ff;
}

.badge-success {
  background: #eef8ef;
  color: #2c6941;
  border: 1px solid #cfe7d3;
}

.badge-warn {
  background: #fff3dc;
  color: #8a5a00;
  border: 1px solid #ffd89a;
}

.hidden {
  display: none !important;
}