/* Study Dog Tutoring.
   Brand: DM Sans (headings), Nunito (text), purple #833BA6.
   Motif: the exercise-book margin rule, used where students read or sign something. */

@font-face { font-family: "DM Sans"; font-weight: 500; font-display: swap; src: url("/assets/fonts/dm-sans-latin-500-normal.woff2") format("woff2"); }
@font-face { font-family: "DM Sans"; font-weight: 700; font-display: swap; src: url("/assets/fonts/dm-sans-latin-700-normal.woff2") format("woff2"); }
@font-face { font-family: "Nunito"; font-weight: 400; font-display: swap; src: url("/assets/fonts/nunito-latin-400-normal.woff2") format("woff2"); }
@font-face { font-family: "Nunito"; font-weight: 600; font-display: swap; src: url("/assets/fonts/nunito-latin-600-normal.woff2") format("woff2"); }
@font-face { font-family: "Nunito"; font-weight: 700; font-display: swap; src: url("/assets/fonts/nunito-latin-700-normal.woff2") format("woff2"); }

:root {
  --ink: #1f1233;
  --ink-soft: #55466b;
  --paper: #f7f4fb;
  --card: #ffffff;
  --line: #e0d8eb;
  --purple: #833ba6;
  --purple-deep: #65297f;
  --blue: #4c3aa6;
  --green: #94a63a;
  --green-ink: #4b5812;
  --green-wash: #eef3d6;
  --magenta: #a63a94;
  --danger: #b3261e;
  --danger-wash: #fbe9e7;
  --info-wash: #ece8f8;
  --radius: 8px;
  --font-head: "DM Sans", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-body: "Nunito", system-ui, -apple-system, "Segoe UI", sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background: var(--paper);
  color: var(--ink);
  font: 400 1rem/1.6 var(--font-body);
}
main.wrap { flex: 1; padding-top: 2rem; padding-bottom: 3rem; }
.wrap { width: 100%; max-width: 62rem; margin: 0 auto; padding: 0 1rem; }

h1, h2, h3 { font-family: var(--font-head); font-weight: 700; line-height: 1.2; margin: 0 0 .75rem; letter-spacing: -0.01em; }
h1 { font-size: 1.9rem; }
h2 { font-size: 1.3rem; margin-top: 2rem; }
h3 { font-size: 1.05rem; }
p { margin: 0 0 1rem; max-width: 40rem; }
a { color: var(--blue); text-underline-offset: 2px; }
a:hover { color: var(--purple-deep); }
:focus-visible { outline: 3px solid var(--blue); outline-offset: 2px; border-radius: 3px; }
.skip { position: absolute; left: -999px; top: 0; background: #fff; padding: .5rem 1rem; z-index: 10; }
.skip:focus { left: 0; }
.muted { color: var(--ink-soft); }
.small { font-size: .9rem; }
[hidden] { display: none !important; }

/* Header and footer */
.site-header { background: var(--purple); color: #fff; }
.site-header .bar { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: .25rem 1.5rem; padding-top: .7rem; padding-bottom: .7rem; }
.brand { font: 700 1.15rem var(--font-head); color: #fff; text-decoration: none; }
.nav { display: flex; flex-wrap: wrap; align-items: center; gap: .15rem 1.1rem; }
.nav a, .nav-btn { color: #fff; text-decoration: none; font: 600 .95rem var(--font-body); padding: .35rem 0; background: none; border: 0; cursor: pointer; border-bottom: 2px solid transparent; }
.nav a:hover, .nav-btn:hover { color: #fff; border-bottom-color: #fff; }
.nav a:focus-visible, .nav-btn:focus-visible { outline-color: #fff; }
.nav .nav-cta { background: #fff; color: var(--purple-deep); padding: .35rem .85rem; border-radius: var(--radius); border-bottom: 0; }
.nav .nav-cta:hover { background: var(--info-wash); color: var(--purple-deep); }
form.inline { display: inline; margin: 0; }
.site-footer { border-top: 1px solid var(--line); padding: 1.25rem 0; color: var(--ink-soft); font-size: .9rem; }
.site-footer .wrap { display: flex; flex-wrap: wrap; gap: .5rem 1.5rem; }

/* Messages */
.flash { padding: .75rem 1rem; border-radius: var(--radius); margin-bottom: 1.25rem; border-left: 4px solid; max-width: 40rem; }
.flash.success { background: var(--green-wash); border-color: var(--green); color: var(--green-ink); }
.flash.info { background: var(--info-wash); border-color: var(--blue); }
.flash.error { background: var(--danger-wash); border-color: var(--danger); color: #7a1912; }

/* Cards and the margin rule */
.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 1.5rem; margin-bottom: 1.5rem; }
.card > :last-child { margin-bottom: 0; }
.card h2:first-child { margin-top: 0; }
.book {
  padding-left: 3.5rem;
  background-image: linear-gradient(to right, transparent 2.25rem, var(--magenta) 2.25rem, var(--magenta) calc(2.25rem + 2px), transparent calc(2.25rem + 2px));
}
.narrow { max-width: 30rem; margin-left: auto; margin-right: auto; }
.medium { max-width: 40rem; }
.page-head { display: flex; flex-wrap: wrap; align-items: baseline; justify-content: space-between; gap: .5rem 1rem; margin-bottom: 1.25rem; }
.page-head h1 { margin: 0; }
.lede { font-size: 1.1rem; color: var(--ink-soft); }

/* Forms */
.field { margin-bottom: 1.1rem; }
.field label { display: block; font-weight: 700; margin-bottom: .25rem; }
.hint { color: var(--ink-soft); font-size: .9rem; margin: 0 0 .35rem; }
input[type=text], input[type=email], input[type=password], input[type=number], input[type=search], input[type=date], input[type=time], textarea, select {
  width: 100%; max-width: 26rem; padding: .6rem .7rem; font: inherit; color: var(--ink);
  background: #fff; border: 1.5px solid #9d8fb3; border-radius: 6px;
}
input:focus-visible, select:focus-visible, textarea:focus-visible { outline: 3px solid var(--blue); outline-offset: 1px; }
.has-error input[type=text], .has-error input[type=email], .has-error input[type=password], .has-error input[type=number] { border-color: var(--danger); }
.error { color: var(--danger); font-weight: 600; font-size: .92rem; margin: .3rem 0 0; }
.field.check { display: flex; flex-wrap: wrap; gap: .6rem; align-items: flex-start; }
.field.check input { margin-top: .35rem; width: 1.1rem; height: 1.1rem; accent-color: var(--purple); flex: none; }
.field.check label { flex: 1; font-weight: 400; margin: 0; min-width: 12rem; }
.field.check .error { flex-basis: 100%; }
fieldset { border: 0; padding: 0; margin: 0 0 1rem; }
legend { font: 700 1.05rem var(--font-head); padding: 0; margin-bottom: .5rem; }
.form-actions { display: flex; flex-wrap: wrap; align-items: center; gap: .75rem 1.25rem; margin-top: 1.25rem; }
.row { display: grid; grid-template-columns: 1fr 1fr; gap: 0 1rem; max-width: 26rem; }
.row input { max-width: none; }

/* Buttons */
.btn { display: inline-block; font: 700 1rem var(--font-body); padding: .65rem 1.3rem; border-radius: var(--radius); border: 2px solid var(--purple); background: var(--purple); color: #fff; text-decoration: none; cursor: pointer; line-height: 1.3; }
.btn:hover { background: var(--purple-deep); border-color: var(--purple-deep); color: #fff; }
.btn.secondary { background: transparent; color: var(--purple-deep); }
.btn.secondary:hover { background: var(--info-wash); color: var(--purple-deep); }
.btn.danger { background: transparent; border-color: var(--danger); color: var(--danger); }
.btn.danger:hover { background: var(--danger-wash); color: var(--danger); }
.btn.small { padding: .35rem .8rem; font-size: .9rem; }
.linkish { background: none; border: 0; padding: 0; font: inherit; color: var(--blue); text-decoration: underline; text-underline-offset: 2px; cursor: pointer; }
.linkish:hover { color: var(--purple-deep); }

/* Tables and lists */
.table-wrap { margin-bottom: 1.25rem; position: relative; overflow-x: auto; max-width: 100%; min-width: 0; }
@media (max-width: 520px) { th, td { padding: .55rem .5rem; } }
table { width: 100%; border-collapse: collapse; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); }
th, td { text-align: left; padding: .65rem .8rem; border-bottom: 1px solid var(--line); vertical-align: top; }
th { font: 700 .92rem var(--font-head); background: #f1ecf8; }
tr:last-child td { border-bottom: 0; }
.badge { display: inline-block; font-size: .85rem; font-weight: 700; padding: .1rem .55rem; border-radius: 99px; background: var(--info-wash); color: var(--ink); white-space: nowrap; }
.badge-ok { background: var(--green-wash); color: var(--green-ink); }
.badge-warn { background: #fdf0d5; color: #6b4600; }
.badge-off { background: var(--danger-wash); color: #7a1912; }
dl.facts { display: grid; grid-template-columns: max-content 1fr; gap: .45rem 1.5rem; margin: 0; }
dl.facts dt { font-weight: 700; }
dl.facts dd { margin: 0; }
.counts { display: flex; flex-wrap: wrap; gap: 1rem 2.5rem; margin: 0 0 1rem; padding: 0; list-style: none; }
.counts strong { display: block; font: 700 2rem/1.1 var(--font-head); color: var(--purple-deep); }
.filters { display: flex; flex-wrap: wrap; gap: .75rem; align-items: end; margin-bottom: 1rem; }
.filters .field { margin: 0; }
.pager { display: flex; gap: 1rem; align-items: center; margin-top: 1rem; }
.statements { padding-left: 1.2rem; margin: 0 0 1.25rem; }
.statements li { margin-bottom: .5rem; max-width: 36rem; }
.checklist { list-style: none; padding: 0; margin: 0 0 1rem; }
.checklist li { display: flex; gap: .6rem; align-items: baseline; padding: .4rem 0; border-bottom: 1px solid var(--line); }
.checklist li:last-child { border-bottom: 0; }
.mark { font-weight: 700; width: 1.4rem; flex: none; }
.mark.done { color: var(--green-ink); }
.mark.todo { color: var(--magenta); }
.checks li { margin-bottom: .4rem; }

/* Home: a marked essay paragraph */
.hero { display: grid; gap: 2rem 3rem; grid-template-columns: 1fr; align-items: center; padding: 1rem 0 2rem; }
.hero h1 { font-size: 2.4rem; letter-spacing: -0.02em; max-width: 14ch; }
.hero .actions { display: flex; flex-wrap: wrap; gap: .75rem; margin: 1.5rem 0 .75rem; }
.specimen { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 1.25rem 1.25rem 1.25rem 3.5rem; position: relative; font-size: 1.02rem; background-image: linear-gradient(to right, transparent 2.25rem, var(--magenta) 2.25rem, var(--magenta) calc(2.25rem + 2px), transparent calc(2.25rem + 2px)); }
.specimen p { margin: 0 0 .9rem; }
.specimen mark { background: #f6e3f2; color: inherit; border-bottom: 2px solid var(--magenta); padding: 0 .1em; }
.specimen .note { display: block; margin-top: .5rem; color: var(--magenta); font-weight: 700; font-size: .92rem; }
.specimen .grade { margin: 0; font: 700 1rem var(--font-head); color: var(--magenta); }

@media (min-width: 52rem) {
  .hero { grid-template-columns: 1.05fr 1fr; }
  .hero h1 { font-size: 3rem; }
}
@media (max-width: 36rem) {
  .book { padding-left: 1.5rem; background-image: none; border-left: 4px solid var(--magenta); }
  .specimen { padding-left: 1.25rem; background-image: none; border-left: 4px solid var(--magenta); }
  h1 { font-size: 1.6rem; }
  .row { grid-template-columns: 1fr; }
  dl.facts { grid-template-columns: 1fr; gap: 0; }
  dl.facts dt { margin-top: .6rem; }
}
@media (prefers-reduced-motion: reduce) { * { transition: none !important; animation: none !important; } }

/* Utilities */
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.mt { margin-top: 1.5rem; }
hr.rule { border: 0; border-top: 1px solid var(--line); margin: 1.25rem 0; }

/* Booking */
textarea { min-height: 5rem; resize: vertical; }
.picker { display: flex; flex-wrap: wrap; align-items: center; gap: .75rem 1.5rem; margin-bottom: 1rem; }
.picker p { margin: 0; }
.seg { display: inline-flex; border: 1.5px solid var(--purple); border-radius: var(--radius); overflow: hidden; }
.seg a { padding: .45rem 1rem; text-decoration: none; font-weight: 700; color: var(--purple-deep); background: #fff; }
.seg a + a { border-left: 1.5px solid var(--purple); }
.seg a[aria-current] { background: var(--purple); color: #fff; }
.seg a:focus-visible { outline-offset: -3px; }
.week-nav { display: flex; align-items: center; justify-content: space-between; gap: 1rem; margin: 1.25rem 0 .75rem; max-width: 30rem; }
.week { list-style: none; margin: 0 0 1rem; padding: 0; display: grid; grid-template-columns: repeat(7, minmax(0, 1fr)); gap: .6rem; }
.day { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: .6rem .6rem .8rem; min-width: 0; }
.day.outside { opacity: .55; }
.day h2 { font-size: .95rem; margin: 0 0 .5rem; }
.chips { list-style: none; margin: 0; padding: 0; display: grid; gap: .35rem; }
.chip { display: block; text-align: center; padding: .5rem .25rem; min-height: 2.75rem; border: 1.5px solid var(--purple); border-radius: 6px; color: var(--purple-deep); background: #fff; font-weight: 700; text-decoration: none; line-height: 1.6; }
.chip:hover { background: var(--purple); color: #fff; }
article.item { padding: 1.1rem 1.25rem; max-width: 40rem; }
article.item h3 { margin-bottom: .35rem; }
article.item p { margin-bottom: .5rem; }
.actions { display: flex; flex-wrap: wrap; gap: .5rem; align-items: flex-start; margin-top: .75rem; }
.actions details { width: 100%; }
.actions details[open] { border: 1px solid var(--line); border-radius: var(--radius); padding: .75rem; background: #fcfbfe; }
.actions details > summary { list-style: none; cursor: pointer; display: inline-block; }
.actions details > summary::-webkit-details-marker { display: none; }
.actions details[open] > summary { margin-bottom: .75rem; }
.actions > details:not([open]) { width: auto; }
.rules { list-style: none; padding: 0; margin: 0 0 1rem; }
.rules li { padding: .35rem 0; }
.rules ul { list-style: none; padding-left: 1rem; margin: 0; }
@media (max-width: 52rem) {
  .week { grid-template-columns: 1fr; }
  .day { display: grid; grid-template-columns: 6.5rem 1fr; gap: .5rem; align-items: start; }
  .day h2 { margin: .5rem 0 0; }
  .chips { grid-template-columns: repeat(auto-fill, minmax(4.5rem, 1fr)); }
}

/* Groups */
ul.plain { list-style: none; padding: 0; margin: 0 0 1rem; }
ul.plain li { padding: .3rem 0; border-bottom: 1px solid var(--line); }
ul.plain li:last-child { border-bottom: 0; }
h4 { font: 700 1rem var(--font-head); margin: 1rem 0 .3rem; }
fieldset.seg-row { border: 0; padding: 0; margin: 0 0 .9rem; display: flex; flex-wrap: wrap; gap: .4rem 1.25rem; align-items: baseline; }
fieldset.seg-row legend { font-weight: 700; padding: 0; margin-bottom: .25rem; }
fieldset.seg-row label { display: inline-flex; align-items: center; gap: .4rem; }