/* =========================================================================
   Inter-School Competition Registration - styles
   Adaptive layout: a fixed-width layout is chosen per device class
   (desktop-wide / desktop / tablet / phone) instead of fluid resizing.
   ========================================================================= */

:root {
  color-scheme: light;
  --bg: #f4f4f2;
  --surface: #ffffff;
  --surface-2: #f6f5f3;
  --border: #e4e2de;
  --border-strong: #cbc8c2;
  --text: #1b1a18;
  --text-2: #55524d;
  --text-3: #7d7a73;
  --accent: #fa471c;
  --accent-hover: #e03a12;
  --accent-text: #d2390f;
  --accent-soft: #fff0eb;
  --on-accent: #ffffff;
  --navy: #1d2a6b;
  --ink: #1b1a18;
  --on-ink: #ffffff;
  --series-1: #fa471c;
  --track: #efedea;
  --danger: #b3261e;
  --danger-soft: #fbe9e7;
  --success: #1e7a3c;
  --success-soft: #e5f4ea;
  --shadow: 0 1px 2px rgba(20, 20, 15, .05);
  --radius: 2px;
  --radius-sm: 2px;
  --font: "Open Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
  --font-head: "Montserrat", "Open Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, sans-serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --bg: #121211;
    --surface: #1b1a18;
    --surface-2: #252421;
    --border: #34322e;
    --border-strong: #4b4944;
    --text: #f2f0ec;
    --text-2: #c5c2ba;
    --text-3: #95928a;
    --accent: #fa471c;
    --accent-hover: #ff6238;
    --accent-text: #ff7a52;
    --accent-soft: #3a1d14;
    --on-accent: #ffffff;
    --navy: #8e9be0;
    --ink: #000000;
    --on-ink: #ffffff;
    --series-1: #fa5a32;
    --track: #2b2a27;
    --danger: #f2867c;
    --danger-soft: #3a1f1c;
    --success: #6fcf8f;
    --success-soft: #19301f;
    --shadow: 0 1px 2px rgba(0, 0, 0, .4);
  }
}
:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #121211;
  --surface: #1b1a18;
  --surface-2: #252421;
  --border: #34322e;
  --border-strong: #4b4944;
  --text: #f2f0ec;
  --text-2: #c5c2ba;
  --text-3: #95928a;
  --accent: #fa471c;
  --accent-hover: #ff6238;
  --accent-text: #ff7a52;
  --accent-soft: #3a1d14;
  --on-accent: #ffffff;
  --navy: #8e9be0;
  --ink: #000000;
  --on-ink: #ffffff;
  --series-1: #fa5a32;
  --track: #2b2a27;
  --danger: #f2867c;
  --danger-soft: #3a1f1c;
  --success: #6fcf8f;
  --success-soft: #19301f;
  --shadow: 0 1px 2px rgba(0, 0, 0, .4);
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 15px/1.5 var(--font);
}
a { color: var(--accent-text); }
h1, h2, h3 {
  margin: 0;
  line-height: 1.25;
  font-family: var(--font-head);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: -.01em;
}
h1 { font-size: 26px; }
h2 { font-size: 17px; }
h3 { font-size: 14px; }
/* Short orange rule under section titles, as on trackandbeyond.in */
.page-head h1::after, .card-head h2::after {
  content: "";
  display: block;
  width: 44px;
  height: 3px;
  margin-top: 10px;
  background: var(--accent);
}
.page-head h1::after { width: 56px; margin-top: 12px; }
.muted { color: var(--text-2); }
.small { font-size: 13px; }
.mono { font-family: var(--mono); font-size: 12.5px; }
[hidden] { display: none !important; }

/* ------------------------------------------------------------ page frame */

.container { width: 1200px; margin: 0 auto; }

/* Header stays white in both themes so the logo always reads correctly. */
.topbar {
  background: #ffffff;
  border-bottom: 1px solid #ebe9e5;
  box-shadow: 0 1px 6px rgba(0, 0, 0, .05);
}
.topbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
}
.brand { display: flex; align-items: center; text-decoration: none; }
.brand img { display: block; height: 48px; width: auto; }
.topnav { display: flex; gap: 4px; }
.topnav a {
  padding: 8px 12px;
  color: #1b1a18;
  text-decoration: none;
  font-family: var(--font-head);
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .02em;
  white-space: nowrap;
}
.topnav a:hover, .topnav a.active { color: #fa471c; }

main { padding: 32px 0 60px; }

.page-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 24px;
}
.page-head p { margin: 10px 0 0; color: var(--text-2); }
.breadcrumb {
  font-family: var(--font-head);
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .04em;
  color: var(--text-3);
  margin-bottom: 8px;
}
.breadcrumb a { color: var(--accent-text); text-decoration: none; }
.breadcrumb a:hover { text-decoration: underline; }

/* Orange feature panel (mirrors the site's "Athletics" tile) */
.hero {
  position: relative;
  overflow: hidden;
  background: var(--accent);
  color: #ffffff;
  padding: 40px 44px;
  margin-bottom: 24px;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
}
.hero::before {
  content: "";
  position: absolute;
  right: -60px; top: -40px;
  width: 340px; height: 340px;
  background: linear-gradient(135deg, rgba(255, 255, 255, .16), rgba(255, 255, 255, 0) 60%);
  transform: rotate(45deg);
  pointer-events: none;
}
.hero > * { position: relative; }
.hero-kicker {
  font-family: var(--font-head);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
  opacity: .9;
  margin-bottom: 8px;
}
.hero h1 { font-size: 30px; color: #ffffff; }
.hero h1::after { content: ""; display: block; width: 56px; height: 3px; margin-top: 14px; background: #ffffff; }
.hero p {
  margin: 14px 0 0;
  max-width: 620px;
  font-family: var(--font-head);
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
  line-height: 1.45;
  color: #1b1a18;
}

/* ----------------------------------------------------------------- cards */

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 24px;
}
.card + .card { margin-top: 20px; }
.card-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 18px;
}
.card-head p { margin: 10px 0 0; font-size: 13px; color: var(--text-2); }

.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.grid-main { display: grid; grid-template-columns: 2fr 1fr; gap: 20px; align-items: start; }
.stack > * + * { margin-top: 20px; }

/* ----------------------------------------------------------------- stats */

.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-bottom: 20px; }
.stat {
  background: var(--surface);
  border: 1px solid var(--border);
  border-top: 3px solid var(--accent);
  border-radius: var(--radius);
  padding: 16px 18px;
  box-shadow: var(--shadow);
}
.stat-label {
  font-family: var(--font-head);
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .05em;
  color: var(--text-2);
}
.stat-value { font-family: var(--font-head); font-size: 30px; font-weight: 700; margin-top: 6px; font-variant-numeric: tabular-nums; }
.stat-unit { font-size: 14px; font-weight: 600; color: var(--text-2); margin-left: 3px; }

/* --------------------------------------------------------------- buttons */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  height: 38px;
  padding: 0 16px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-strong);
  background: var(--surface);
  color: var(--text);
  font-family: var(--font-head);
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
  text-decoration: none;
  white-space: nowrap;
}
.btn:hover { background: var(--surface-2); }
.btn:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
}
.btn-primary { background: var(--accent); border-color: var(--accent); color: var(--on-accent); }
.btn-primary:hover { background: var(--accent-hover); border-color: var(--accent-hover); }
.btn-arrow::after { content: "\203A"; font-size: 18px; line-height: 1; margin-left: 2px; margin-top: -2px; }
.btn-light { background: #ffffff; border-color: #ffffff; color: var(--accent); }
.btn-light:hover { background: #1b1a18; border-color: #1b1a18; color: #ffffff; }
.btn-ghost { border-color: transparent; background: transparent; color: var(--text-2); }
.btn-ghost:hover { background: var(--surface-2); color: var(--text); }
.btn-danger-ghost { border-color: transparent; background: transparent; color: var(--text-3); }
.btn-danger-ghost:hover { background: var(--danger-soft); color: var(--danger); }
.btn-sm { height: 30px; padding: 0 10px; font-size: 12px; }
.btn[disabled] { opacity: .55; cursor: not-allowed; }
.btn-row { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }

/* ----------------------------------------------------------------- forms */

.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px 20px; }
.field { display: flex; flex-direction: column; gap: 6px; }
.field.span-2 { grid-column: span 2; }
.field label { font-family: var(--font-head); font-size: 11.5px; font-weight: 700; text-transform: uppercase; letter-spacing: .04em; color: var(--text-2); }
.field .req { color: var(--danger); }
input, select, textarea {
  font: inherit;
  font-size: 14px;
  color: var(--text);
  background: var(--surface);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  padding: 8px 10px;
  width: 100%;
  min-width: 0;
}
textarea { resize: vertical; min-height: 84px; }
input.locked, textarea.locked { background: var(--surface-2); border-color: var(--border); color: var(--text); cursor: default; }
input.locked:focus-visible, textarea.locked:focus-visible { outline: none; }
#school-card, #students-card { margin-bottom: 20px; }
.card + .card { margin-top: 0; }
.card-head-actions { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.school-summary { display: flex; flex-wrap: wrap; gap: 8px 40px; margin: 0; font-size: 15px; }
.school-summary dt {
  font-family: var(--font-head);
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .04em;
  color: var(--text-2);
}
.school-summary dd { margin: 2px 0 0; font-weight: 600; }
#more-fields { margin-top: 16px; }
input.invalid, select.invalid, textarea.invalid { border-color: var(--danger); background: var(--danger-soft); }
.field-error { font-size: 12.5px; color: var(--danger); min-height: 0; }
.form-actions { display: flex; justify-content: flex-end; gap: 10px; margin-top: 22px; }

.select-school { display: flex; gap: 10px; }
.select-school select { flex: 1; }

/* ---------------------------------------------------------------- alerts */

.alert {
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  font-size: 14px;
  margin-bottom: 16px;
  border: 1px solid transparent;
}
.alert-error { background: var(--danger-soft); color: var(--danger); border-color: color-mix(in srgb, var(--danger) 30%, transparent); }
.alert-success { background: var(--success-soft); color: var(--success); border-color: color-mix(in srgb, var(--success) 30%, transparent); }

.toast {
  border-left: 4px solid var(--accent);
  position: fixed;
  left: 50%;
  bottom: 24px;
  transform: translateX(-50%) translateY(20px);
  background: var(--text);
  color: var(--bg);
  padding: 10px 18px;
  border-radius: 8px;
  font-size: 14px;
  opacity: 0;
  pointer-events: none;
  transition: opacity .2s, transform .2s;
  z-index: 50;
  max-width: calc(100% - 32px);
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

/* ---------------------------------------------------------------- tables */

.table-wrap { overflow-x: auto; border: 1px solid var(--border); border-radius: var(--radius-sm); }
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { padding: 9px 12px; text-align: left; border-bottom: 1px solid var(--border); vertical-align: middle; }
th {
  background: var(--ink);
  font-family: var(--font-head);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: .05em;
  color: var(--on-ink);
  font-weight: 700;
  white-space: nowrap;
}
tbody tr:last-child td { border-bottom: 0; }
tbody tr.clickable { cursor: pointer; }
tbody tr.clickable:hover { background: var(--surface-2); }
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; }
.empty { padding: 28px; text-align: center; color: var(--text-2); }

.toolbar { display: flex; justify-content: space-between; align-items: center; gap: 12px; margin-bottom: 12px; }
.toolbar input[type="search"] { width: 280px; }

/* Editable students table */
.edit-table td { padding: 6px 6px; }
.edit-table td:first-child { padding-left: 12px; color: var(--text-3); font-variant-numeric: tabular-nums; width: 40px; }
.edit-table input, .edit-table select { padding: 6px 8px; }
.edit-table .col-name { min-width: 200px; }
.edit-table .col-class { width: 100px; }
.edit-table .col-dob { width: 160px; }
.edit-table .col-age { width: 64px; color: var(--text-2); text-align: right; font-variant-numeric: tabular-nums; }
.edit-table .col-gender { width: 110px; }
.edit-table .col-group { width: 84px; font-weight: 600; }
.edit-table .col-events { min-width: 180px; }
.events-pick { display: flex; flex-wrap: wrap; gap: 4px 14px; padding: 4px 6px; border: 1px solid transparent; border-radius: var(--radius-sm); }
.events-pick.invalid { border-color: var(--danger); background: var(--danger-soft); }
.event-opt { display: inline-flex; align-items: center; gap: 6px; font-size: 13.5px; white-space: nowrap; cursor: pointer; }
.event-opt input { width: 16px; height: 16px; margin: 0; accent-color: var(--accent); }
.edit-table .col-act { width: 44px; text-align: center; }
.edit-table tr.row-error td { background: var(--danger-soft); vertical-align: top; }
.cell-error { font-size: 11.5px; line-height: 1.3; color: var(--danger); margin-top: 4px; max-width: 220px; }
.edit-table tr.row-new td:first-child { color: var(--accent-text); font-weight: 700; }
.cell-label { display: none; }

.table-foot {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  margin-top: 14px;
}
.dirty-flag { font-size: 13px; color: var(--text-2); }
.dirty-flag.on { color: var(--accent-text); font-weight: 600; }

/* -------------------------------------------------------------- details */

.details-cols { display: grid; grid-template-columns: 1fr 1fr; gap: 10px 48px; }
.details { display: grid; grid-template-columns: 120px 1fr; gap: 10px 14px; font-size: 14px; margin: 0; align-content: start; }
.details dt { color: var(--text-2); }
.details dd { margin: 0; word-break: break-word; }

.files-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 16px;
  align-items: center;
  margin-top: 20px;
}
.files-actions { display: flex; flex-direction: column; gap: 8px; }
.files-row > * { min-width: 0; }
.path-box .mono { overflow-wrap: anywhere; }
.path-box {
  padding: 12px;
  background: var(--surface-2);
  border-radius: var(--radius-sm);
  font-size: 13px;
}
.path-box div + div { margin-top: 4px; }

.badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 2px;
  font-size: 12px;
  background: var(--accent-soft);
  color: var(--accent);
  font-weight: 600;
}

/* ---------------------------------------------------------------- footer */

.footer { background: #1b1a18; color: #bdbab3; font-size: 13px; }
.footer .container { display: flex; align-items: center; justify-content: space-between; gap: 16px; height: 64px; }
.footer a { color: #ffffff; text-decoration: none; font-family: var(--font-head); font-weight: 700; text-transform: uppercase; font-size: 12px; }
.footer a:hover { color: #fa471c; }

/* =========================================================================
   Adaptive layouts - one fixed design per device class
   ========================================================================= */

/* Desktop (1024 - 1279px) */
@media (max-width: 1279px) {
  .container { width: 980px; }
  .edit-table .col-name { min-width: 170px; }
}

/* Tablet (768 - 1023px) */
@media (max-width: 1023px) {
  .container { width: 736px; }
  .grid-main, .grid-2 { grid-template-columns: 1fr; }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .toolbar input[type="search"] { width: 220px; }
  .hide-tablet { display: none; }
  .hero { padding: 32px; }
  .edit-table .col-name { min-width: 140px; }
  .edit-table .col-dob { width: 140px; }
  .edit-table .col-gender { width: 96px; }
  .edit-table .col-events { min-width: 140px; }
  .edit-table .col-class { width: 76px; }
}

/* Phone (< 768px) */
@media (max-width: 767px) {
  body { font-size: 15px; }
  .container { width: auto; margin: 0 16px; }
  .topbar .container { height: 60px; }
  .brand img { height: 34px; }
  .topnav { gap: 0; }
  .topnav a { padding: 8px 5px; font-size: 10.5px; letter-spacing: 0; }
  .hero { padding: 26px 20px; flex-direction: column; align-items: stretch; }
  .hero h1 { font-size: 22px; }
  .hero .btn { width: 100%; }
  .footer .container { flex-direction: column; justify-content: center; height: auto; padding: 18px 0; text-align: center; }
  main { padding: 18px 0 40px; }
  h1 { font-size: 22px; }
  .page-head { flex-direction: column; align-items: stretch; }
  .page-head .btn-row .btn { flex: 1; }
  .stats { gap: 10px; }
  .stat { padding: 12px 14px; }
  .stat-value { font-size: 22px; }
  .card { padding: 16px; }
  .form-grid { grid-template-columns: 1fr; }
  .field.span-2 { grid-column: auto; }
  .form-actions { flex-direction: column-reverse; }
  .form-actions .btn { width: 100%; }
  .select-school { flex-direction: column; }
  .toolbar { flex-direction: column; align-items: stretch; }
  .toolbar input[type="search"] { width: 100%; }
  .hide-phone { display: none; }
  .details-cols { grid-template-columns: 1fr; gap: 0; }
  .files-row { grid-template-columns: 1fr; }
  .files-actions { flex-direction: row; flex-wrap: wrap; }
  .details { grid-template-columns: 1fr; gap: 2px; }
  .details dd { margin-bottom: 8px; }
  .table-foot { flex-direction: column; align-items: stretch; }
  .table-foot .btn-row .btn { flex: 1; }
  .school-summary { flex-direction: column; gap: 10px; }

  /* Students editor becomes a list of cards on phones */
  .edit-table, .edit-table tbody, .edit-table tr, .edit-table td { display: block; width: 100%; }
  .edit-table thead { display: none; }
  .edit-table-wrap { border: 0; overflow: visible; }
  .edit-table tr {
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 10px 12px;
    margin-bottom: 10px;
    background: var(--surface);
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px 10px;
  }
  .edit-table td { border: 0; padding: 0 !important; width: auto !important; min-width: 0 !important; }
  .edit-table td:first-child { grid-column: 1 / 2; font-weight: 600; }
  .edit-table td.col-act { grid-column: 2 / 3; grid-row: 1; text-align: right; }
  .edit-table td.col-name, .edit-table td.col-events { grid-column: span 2; }
  .edit-table td.col-age { text-align: left; }
  .edit-table tr.row-error td { background: transparent; }
  .edit-table tr.row-error { border-color: var(--danger); }
  .cell-label { display: block; font-size: 12px; color: var(--text-2); margin-bottom: 3px; }
}