:root {
  color-scheme: dark;
  --bg: #050506;
  --bg-soft: #0d0d10;
  --panel: #141416;
  --panel-strong: #1d1d21;
  --line: rgba(255, 255, 255, 0.12);
  --line-strong: rgba(255, 255, 255, 0.22);
  --text: #ffffff;
  --muted: #b8b8be;
  --faint: #74747d;
  --accent: #d71920;
  --accent-strong: #ff3038;
  --accent-soft: rgba(215, 25, 32, 0.16);
  --accent-text: #ffffff;
  --danger: #ff3038;
  --ok: #ffffff;
  --shadow: 0 18px 60px rgba(0, 0, 0, 0.45);
}

* {
  box-sizing: border-box;
}

html {
  min-width: 320px;
  background: var(--bg);
}

body {
  margin: 0;
  min-width: 320px;
  min-height: 100vh;
  background:
    radial-gradient(circle at 18% 8%, rgba(215, 25, 32, 0.34), transparent 28%),
    radial-gradient(circle at 88% 12%, rgba(255, 255, 255, 0.12), transparent 22%),
    radial-gradient(circle at 70% 86%, rgba(215, 25, 32, 0.18), transparent 34%),
    linear-gradient(145deg, #050506 0%, #101015 46%, #050506 100%),
    var(--bg);
  color: var(--text);
  font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  letter-spacing: 0;
}

button,
input,
select {
  font: inherit;
}

button {
  color: var(--text);
}

.app {
  width: min(1180px, 100%);
  margin: 0 auto;
  padding: max(20px, env(safe-area-inset-top)) 14px max(28px, env(safe-area-inset-bottom));
}

.topbar {
  position: relative;
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 16px;
  min-height: 104px;
  padding: 14px 0 18px 72px;
}

.topbar::before {
  content: "BT";
  position: absolute;
  left: 0;
  top: 14px;
  display: grid;
  place-items: center;
  width: 56px;
  height: 56px;
  border: 1px solid rgba(255, 48, 56, 0.72);
  border-radius: 8px;
  background: linear-gradient(145deg, rgba(215, 25, 32, 0.32), rgba(255, 255, 255, 0.04));
  color: var(--text);
  font-weight: 900;
}

.kicker {
  margin: 0 0 4px;
  color: var(--accent-strong);
  font-size: 12px;
  font-weight: 850;
  text-transform: uppercase;
}

h1,
h2,
p {
  margin: 0;
}

h1 {
  font-size: 34px;
  line-height: 1.02;
}

h2 {
  font-size: 19px;
  line-height: 1.2;
}

.tabs {
  position: sticky;
  top: 0;
  z-index: 5;
  display: grid;
  grid-template-columns: repeat(7, minmax(0, 1fr));
  gap: 8px;
  padding: 10px 0 16px;
  background: rgba(5, 5, 6, 0.88);
  backdrop-filter: blur(18px);
}

.tab,
.ghost,
.primary,
.secondary,
.icon-button {
  border: 1px solid var(--line);
  border-radius: 8px;
  cursor: pointer;
}

.tab {
  min-height: 44px;
  background: rgba(20, 20, 22, 0.88);
  color: var(--muted);
  font-weight: 850;
}

.tab:hover,
.ghost:hover,
.secondary:hover,
.icon-button:hover {
  border-color: var(--line-strong);
  background: var(--panel-strong);
}

.tab.active {
  border-color: rgba(255, 48, 56, 0.54);
  background: linear-gradient(135deg, rgba(215, 25, 32, 0.28), rgba(255, 255, 255, 0.04));
  color: var(--text);
}

.screen {
  display: none;
}

.screen.active {
  display: block;
}

input,
select {
  width: 100%;
  min-height: 42px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(20, 20, 22, 0.94);
  color: var(--text);
  padding: 8px 10px;
}

input:focus,
select:focus {
  outline: 2px solid rgba(255, 48, 56, 0.26);
  border-color: rgba(255, 48, 56, 0.62);
}

input[type="date"],
input[type="time"] {
  color-scheme: dark;
}

.summary-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
  margin: 4px 0 18px;
}

.metric,
.card,
.form-panel,
.day-cell {
  border: 1px solid var(--line);
  border-radius: 8px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.035), transparent 48%),
    rgba(20, 20, 22, 0.94);
  box-shadow: var(--shadow);
}

.metric {
  min-height: 118px;
  padding: 15px;
}

.metric span {
  display: block;
  color: var(--muted);
  font-size: 12px;
  font-weight: 780;
  text-transform: uppercase;
}

.metric strong {
  display: block;
  margin-top: 12px;
  font-size: 25px;
  line-height: 1.05;
}

.section-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  margin: 20px 0 10px;
}

.section-head h2 {
  position: relative;
}

.section-head h2::before {
  content: "";
  display: block;
  width: 42px;
  height: 2px;
  margin-bottom: 8px;
  background: var(--accent);
}

.stack {
  display: grid;
  gap: 8px;
}

.stack.compact {
  gap: 6px;
}

.card {
  padding: 14px;
}

.card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.card-top strong {
  font-size: 16px;
}

.badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 24px;
  padding: 2px 8px;
  border: 1px solid rgba(255, 48, 56, 0.42);
  border-radius: 999px;
  background: rgba(215, 25, 32, 0.14);
  color: #ffffff;
  font-size: 12px;
  font-weight: 850;
}

.badge.warn {
  border-color: rgba(255, 48, 56, 0.6);
  background: rgba(215, 25, 32, 0.24);
  color: #ffffff;
}

.meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 12px;
  margin-top: 8px;
  color: var(--muted);
  font-size: 13px;
}

.mini-link {
  color: var(--text);
  text-decoration-color: rgba(255, 48, 56, 0.72);
  text-underline-offset: 3px;
}

.card-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 12px;
}

.card-actions button {
  min-width: 132px;
}

.empty {
  color: var(--muted);
  padding: 16px;
  border: 1px dashed var(--line);
  border-radius: 8px;
  background: rgba(20, 20, 22, 0.58);
  text-align: center;
}

.month-controls {
  display: grid;
  grid-template-columns: 42px 1fr 42px;
  align-items: center;
  gap: 8px;
  margin: 6px 0 12px;
  text-align: center;
}

.icon-button {
  min-height: 42px;
  background: var(--panel);
  color: var(--text);
  font-size: 28px;
  line-height: 1;
}

.month-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 6px;
}

.day-cell {
  min-height: 98px;
  padding: 8px;
  text-align: left;
}

.day-cell.today {
  border-color: rgba(255, 48, 56, 0.75);
  background:
    linear-gradient(145deg, rgba(215, 25, 32, 0.18), rgba(20, 20, 22, 0.96)),
    var(--panel);
}

.day-number {
  font-weight: 900;
}

.day-note {
  margin-top: 8px;
  color: var(--muted);
  font-size: 12px;
}

.form-panel {
  display: grid;
  gap: 12px;
  padding: 14px;
  margin-bottom: 12px;
}

.form-row {
  display: grid;
  gap: 10px;
}

.form-row.two,
.tool-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

label {
  display: grid;
  gap: 5px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 750;
}

.check {
  display: flex;
  align-items: center;
  gap: 8px;
}

.check input {
  width: 18px;
  min-height: 18px;
}

.primary,
.secondary,
.ghost {
  min-height: 42px;
  padding: 8px 12px;
  font-weight: 850;
}

.primary {
  border-color: var(--accent);
  background: linear-gradient(135deg, #d71920, #ff3038);
  color: var(--accent-text);
}

.primary:hover {
  background: var(--accent-strong);
}

.secondary,
.ghost {
  background: rgba(20, 20, 22, 0.94);
  color: var(--text);
}

.tool-grid {
  display: grid;
  gap: 10px;
}

#toast {
  position: fixed;
  left: 14px;
  right: 14px;
  bottom: max(16px, env(safe-area-inset-bottom));
  z-index: 20;
  display: none;
  max-width: 560px;
  margin: 0 auto;
  padding: 12px 14px;
  border: 1px solid rgba(255, 48, 56, 0.42);
  border-radius: 8px;
  background: #101015;
  color: var(--text);
  box-shadow: var(--shadow);
}

#toast.show {
  display: block;
}

@media (min-width: 980px) {
  .app {
    padding-left: 24px;
    padding-right: 24px;
  }

  #screen-day {
    display: none;
  }

  #screen-day.active {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 340px;
    gap: 14px;
  }

  #screen-day.active .summary-grid {
    grid-column: 1 / -1;
  }

  #screen-day.active .section-head:nth-of-type(1),
  #screen-day.active #booking-list {
    grid-column: 1;
  }

  #screen-day.active .section-head:nth-of-type(2),
  #screen-day.active #busy-list,
  #screen-day.active #expense-panel {
    grid-column: 2;
  }

  #screen-day.active #expense-panel {
    align-self: start;
  }
}

@media (max-width: 700px) {
  .summary-grid,
  .form-row.two,
  .tool-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .topbar {
    min-height: 92px;
    padding-left: 62px;
  }

  .topbar::before {
    width: 48px;
    height: 48px;
  }

  h1 {
    font-size: 27px;
  }

  .day-cell {
    min-height: 74px;
    padding: 6px;
  }
}

@media (max-width: 480px) {
  .app {
    padding-left: 10px;
    padding-right: 10px;
  }

  .topbar {
    align-items: stretch;
    flex-direction: column;
    padding-bottom: 12px;
  }

  .tabs {
    gap: 4px;
  }

  .tab {
    min-height: 38px;
    font-size: 12px;
  }

  .summary-grid,
  .form-row.two,
  .tool-grid {
    grid-template-columns: 1fr;
  }

  .month-grid {
    gap: 4px;
  }
}