:root {
  --bg: #0f1115;
  --card: #181b21;
  --card2: #1f232b;
  --border: #2a2f38;
  --text: #e8eaed;
  --muted: #9aa3af;
  --accent: #4ade80;
  --danger: #f87171;
}

* {
  box-sizing: border-box;
}

html {
  color-scheme: dark;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.45 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  -webkit-tap-highlight-color: transparent;
}

a {
  color: inherit;
}

.top {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 16px;
  background: rgba(15, 17, 21, 0.85);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}

.brand {
  font-weight: 700;
  text-decoration: none;
  margin-right: 8px;
}

.top nav {
  display: flex;
  gap: 2px;
  align-items: center;
}

.top nav a,
.top nav button {
  font-size: 13px;
  color: var(--muted);
  text-decoration: none;
  padding: 8px;
  border-radius: 8px;
  background: none;
  border: 0;
  cursor: pointer;
  font-family: inherit;
}

.top nav a:active {
  background: var(--card2);
}

main {
  max-width: 560px;
  margin: 0 auto;
  padding: 18px 16px 60px;
}

h2 {
  margin: 4px 0;
  font-size: 22px;
}

h3 {
  font-size: 15px;
  color: var(--muted);
  margin: 18px 0 8px;
}

.date {
  color: var(--muted);
  font-size: 14px;
}

.day-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 10px;
}

.picker {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  margin: 12px 0 18px;
  font-size: 14px;
  color: var(--muted);
}

.chip {
  padding: 7px 12px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--card);
  text-decoration: none;
  font-size: 14px;
}

.chip.active {
  background: var(--accent);
  color: #08130b;
  border-color: var(--accent);
  font-weight: 600;
}

.ex-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.ex {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 14px;
  align-items: start;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 14px;
}

.check {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  border: 2px solid var(--border);
  background: var(--card2);
  color: transparent;
  font-size: 20px;
  line-height: 1;
  cursor: pointer;
  display: grid;
  place-items: center;
  padding: 0;
  min-height: 0;
}

.ex.done .check {
  background: var(--accent);
  border-color: var(--accent);
  color: #08130b;
}

.ex.done .ex-name {
  color: var(--muted);
  text-decoration: line-through;
}

.ex-body {
  min-width: 0;
}

.ex-name {
  font-weight: 600;
  font-size: 17px;
}

.ex-presc {
  color: var(--muted);
  margin-top: 2px;
  font-size: 15px;
}

.weight {
  background: none;
  border: 0;
  padding: 0;
  min-height: 0;
  color: var(--accent);
  font: inherit;
  border-bottom: 1px dashed var(--accent);
  cursor: pointer;
}

.hint {
  color: var(--muted);
  font-size: 13px;
  margin-top: 4px;
}

.weight-form {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 10px;
  align-items: center;
}

[hidden] {
  display: none !important;
}

.weight-form input[type="number"] {
  width: 90px;
}

input,
select {
  background: var(--card2);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px 12px;
  font: inherit;
  font-size: 15px;
}

input:focus,
select:focus {
  outline: 2px solid var(--accent);
  outline-offset: 0;
  border-color: var(--accent);
}

button {
  background: var(--accent);
  color: #08130b;
  border: 0;
  border-radius: 10px;
  padding: 12px 16px;
  font: inherit;
  font-weight: 600;
  cursor: pointer;
  min-height: 44px;
}

button.mini {
  min-height: 36px;
  padding: 6px 12px;
  border-radius: 8px;
  font-size: 14px;
}

button.danger {
  background: none;
  border: 1px solid var(--border);
  color: var(--danger);
}

button.linklike {
  background: none;
  color: var(--muted);
  font-weight: 400;
  min-height: 0;
  padding: 8px;
  font-size: 13px;
}

button:disabled {
  opacity: 0.5;
  cursor: default;
}

.empty {
  color: var(--muted);
  background: var(--card);
  border: 1px dashed var(--border);
  padding: 18px;
  border-radius: 12px;
}

.cards {
  list-style: none;
  padding: 0;
  display: grid;
  gap: 10px;
  margin: 12px 0 18px;
}

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

.row {
  display: flex;
  align-items: center;
  gap: 10px;
}

.grow {
  flex: 1;
}

.sub {
  color: var(--muted);
  font-size: 13px;
  display: block;
}

.card a {
  text-decoration: none;
}

.stack {
  display: grid;
  gap: 10px;
  margin-top: 8px;
}

.rename {
  margin: 10px 0 4px;
}

.editor .ex {
  grid-template-columns: 1fr;
}

.grid4 {
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
}

.grid4 > button {
  grid-column: 1 / -1;
}

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

.pair input {
  width: 70px;
}

.rowbtns {
  display: flex;
  gap: 8px;
  margin-top: 8px;
}

.sched-row {
  padding: 12px 0;
  border-bottom: 1px solid var(--border);
}

.sched-row select {
  min-width: 170px;
}

.logday ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.logday li {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  padding: 10px 2px;
  border-bottom: 1px solid var(--border);
}

.logday .sub {
  align-self: center;
  text-align: right;
}

.login {
  max-width: 340px;
  margin: 18vh auto 0;
  padding: 0 16px;
  display: grid;
  gap: 12px;
}

.login h1 {
  font-size: 24px;
  text-align: center;
}

.login input {
  width: 100%;
}

.error {
  color: var(--danger);
  text-align: center;
  margin: 0;
}

.toast {
  position: fixed;
  left: 50%;
  bottom: 24px;
  transform: translateX(-50%);
  background: #2a2f38;
  color: var(--text);
  padding: 10px 16px;
  border-radius: 10px;
  border: 1px solid var(--border);
  box-shadow: 0 6px 24px rgba(0, 0, 0, 0.4);
  z-index: 50;
  font-size: 14px;
}

@media (min-width: 480px) {
  .grid4 {
    grid-template-columns: 2fr 1fr 1fr auto;
  }

  .grid4 > button {
    grid-column: auto;
  }
}