/* The Pilot Log — shared foundation: tokens, reset, typography, buttons, forms. Mobile first. */

:root {
  --ink: #0f1b2d;
  --ink-2: #3f4d63;
  --ink-3: #5a6578;
  --line: #dfe4ec;
  --line-2: #c9d1dd;
  --bg: #ffffff;
  --bg-2: #f4f6fa;
  --bg-3: #e9edf4;
  --navy: #0b2545;
  --navy-2: #13315c;
  --on-navy: #ffffff;
  --blue: #1f5fbf;
  --blue-soft: #e7effb;
  --amber: #e9a23b;
  --amber-2: #f0b155;
  --amber-ink: #2a1a00;
  /* Status: text colour, soft background, border, text on the soft background */
  --ok: #157347;     --ok-soft: #e3f4ea;     --ok-line: #b9e2c9;     --ok-ink: #0d4f30;
  --warn: #8a5100;   --warn-soft: #fff4dc;   --warn-line: #f2d89c;   --warn-ink: #6b3f00;
  --danger: #b42318; --danger-soft: #fde8e6; --danger-line: #f4c3bd; --danger-ink: #7d1810;
  --info-ink: #173f7a; --info-line: #c7d9f4;
  --danger-solid: #b42318;

  /* Paper logbook */
  --paper: #fdfcf8;
  --paper-ink: #1b2230;
  --paper-rule: #a9a596;
  --paper-rule-soft: #cfcbbd;
  --paper-head: #e9e8e2;
  --paper-alt: #ececec;
  --paper-total: #dce6f1;
  --paper-grand: #c4d79b;
  --paper-input: #fffbe6;
  --signature-filter: none;

  /* Website surfaces */
  --header-bg: rgba(255, 255, 255, .92);
  --hero-top: #f7f9fd;
  --hero-glow: #dbe8fb;
  --highlight: #ffe2ae;
  --quote-bg: #fffaf0;
  --overlay: rgba(8, 18, 35, .55);
  --toast-bg: #0f1b2d;

  --radius: 12px;
  --radius-sm: 8px;
  --shadow-1: 0 1px 2px rgba(15, 27, 45, .06), 0 1px 3px rgba(15, 27, 45, .08);
  --shadow-2: 0 10px 30px rgba(15, 27, 45, .12);
  --font: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, "SF Mono", "Cascadia Mono", Menlo, Consolas, monospace;
  --safe-bottom: env(safe-area-inset-bottom, 0px);
  color-scheme: light;
}

/* Night theme: follows the device, unless the pilot chose day or night (html[data-theme]).
   Every colour is re-stepped for the dark background; text keeps ≥ 4.5:1 contrast. */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme=light]) {
    --ink: #edf1f8; --ink-2: #c6cedb; --ink-3: #a1acbf;
    --line: #2b3448; --line-2: #3d475d;
    --bg: #141a28; --bg-2: #0c111c; --bg-3: #212a3c;
    --navy: #275399; --navy-2: #2f63b5; --on-navy: #ffffff;
    --blue: #8cbaff; --blue-soft: #18294a;
    --ok: #66d69a; --ok-soft: #10301f; --ok-line: #24573b; --ok-ink: #c9f2da;
    --warn: #f3c463; --warn-soft: #33270c; --warn-line: #5f4815; --warn-ink: #ffe6ad;
    --danger: #ff958a; --danger-soft: #3a1714; --danger-line: #6b2a23; --danger-ink: #ffd5cf;
    --info-ink: #d3e3ff; --info-line: #2c4a7c;
    --paper: #171e2d; --paper-ink: #e6ebf4; --paper-rule: #4c566c; --paper-rule-soft: #353e53;
    --paper-head: #212a3d; --paper-alt: #1c2435; --paper-total: #1d3050; --paper-grand: #2c3d1d; --paper-input: #2c2a18;
    --signature-filter: invert(1) hue-rotate(180deg);
    --header-bg: rgba(20, 26, 40, .9); --hero-top: #0f1522; --hero-glow: #172a4c; --highlight: rgba(233, 162, 59, .35);
    --quote-bg: #221d12; --overlay: rgba(0, 0, 0, .65); --toast-bg: #2a3448;
    --shadow-1: 0 1px 2px rgba(0, 0, 0, .35); --shadow-2: 0 12px 32px rgba(0, 0, 0, .45);
    color-scheme: dark;
  }
}
:root[data-theme=dark] {
  --ink: #edf1f8; --ink-2: #c6cedb; --ink-3: #a1acbf;
  --line: #2b3448; --line-2: #3d475d;
  --bg: #141a28; --bg-2: #0c111c; --bg-3: #212a3c;
  --navy: #275399; --navy-2: #2f63b5; --on-navy: #ffffff;
  --blue: #8cbaff; --blue-soft: #18294a;
  --ok: #66d69a; --ok-soft: #10301f; --ok-line: #24573b; --ok-ink: #c9f2da;
  --warn: #f3c463; --warn-soft: #33270c; --warn-line: #5f4815; --warn-ink: #ffe6ad;
  --danger: #ff958a; --danger-soft: #3a1714; --danger-line: #6b2a23; --danger-ink: #ffd5cf;
  --info-ink: #d3e3ff; --info-line: #2c4a7c;
  --paper: #171e2d; --paper-ink: #e6ebf4; --paper-rule: #4c566c; --paper-rule-soft: #353e53;
  --paper-head: #212a3d; --paper-alt: #1c2435; --paper-total: #1d3050; --paper-grand: #2c3d1d; --paper-input: #2c2a18;
  --signature-filter: invert(1) hue-rotate(180deg);
  --header-bg: rgba(20, 26, 40, .9); --hero-top: #0f1522; --hero-glow: #172a4c; --highlight: rgba(233, 162, 59, .35);
  --quote-bg: #221d12; --overlay: rgba(0, 0, 0, .65); --toast-bg: #2a3448;
  --shadow-1: 0 1px 2px rgba(0, 0, 0, .35); --shadow-2: 0 12px 32px rgba(0, 0, 0, .45);
  color-scheme: dark;
}

*, *::before, *::after { box-sizing: border-box; }
[hidden] { display: none !important; }
html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.55;
  color: var(--ink);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img, svg, canvas { display: block; max-width: 100%; }
a { color: var(--blue); text-decoration-thickness: 1px; text-underline-offset: 2px; }
a:hover { color: var(--ink); }
h1, h2, h3, h4 { line-height: 1.2; margin: 0 0 .5em; letter-spacing: -0.015em; color: var(--ink); }
h1 { font-size: clamp(1.9rem, 5.5vw, 3.1rem); letter-spacing: -0.025em; }
h2 { font-size: clamp(1.45rem, 3.6vw, 2.1rem); }
h3 { font-size: 1.15rem; }
p { margin: 0 0 1em; }
small, .small { font-size: .85rem; }
.muted { color: var(--ink-3); }
.num { font-variant-numeric: tabular-nums; }
.mono { font-family: var(--mono); }
hr { border: 0; border-top: 1px solid var(--line); margin: 2rem 0; }
.visually-hidden { position: absolute !important; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.skip-link { position: absolute; left: 8px; top: -60px; background: var(--navy); color: var(--on-navy); padding: 8px 14px; border-radius: 8px; z-index: 1000; }
.skip-link:focus { top: 8px; }
:focus-visible { outline: 3px solid color-mix(in srgb, var(--blue) 55%, transparent); outline-offset: 2px; }

.i { display: inline-block; vertical-align: -0.18em; width: 1.15em; height: 1.15em; flex: none; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }

.wrap { width: 100%; max-width: 1180px; margin: 0 auto; padding: 0 16px; }
.wrap-narrow { max-width: 760px; }
.stack > * + * { margin-top: 1rem; }
.row { display: flex; gap: 12px; align-items: center; flex-wrap: wrap; }
.spacer { flex: 1; }
.grid-2 { display: grid; gap: 16px; }
@media (min-width: 760px) { .grid-2 { grid-template-columns: 1fr 1fr; } }

.with-icon { display: flex; align-items: center; gap: 10px; }
.with-icon .i { color: var(--ok); }

/* Buttons */
.btn {
  --b-bg: var(--bg); --b-fg: var(--ink); --b-line: var(--line-2);
  display: inline-flex; align-items: center; justify-content: center; gap: .5em;
  min-height: 44px; padding: 10px 18px;
  font: 600 15px/1.2 var(--font);
  color: var(--b-fg); background: var(--b-bg);
  border: 1px solid var(--b-line); border-radius: 10px;
  text-decoration: none; cursor: pointer; white-space: nowrap;
  transition: background .15s, border-color .15s, transform .05s, box-shadow .15s;
  -webkit-tap-highlight-color: transparent; touch-action: manipulation;
}
.btn:hover { --b-bg: var(--bg-2); color: var(--b-fg); }
.btn:active { transform: translateY(1px); }
.btn[disabled], .btn.is-disabled { opacity: .5; pointer-events: none; }
.btn-primary { --b-bg: var(--navy); --b-fg: var(--on-navy); --b-line: var(--navy); }
.btn-primary:hover { --b-bg: var(--navy-2); --b-line: var(--navy-2); }
.btn-accent { --b-bg: var(--amber); --b-fg: var(--amber-ink); --b-line: var(--amber); box-shadow: 0 6px 18px rgba(233, 162, 59, .35); }
.btn-accent:hover { --b-bg: var(--amber-2); --b-line: var(--amber-2); }
.btn-danger { --b-bg: var(--danger-solid); --b-fg: #fff; --b-line: var(--danger-solid); }
.btn-danger:hover { --b-bg: #93190f; --b-line: #93190f; }
.btn-ghost { --b-bg: transparent; --b-line: transparent; }
.btn-ghost:hover { --b-bg: var(--bg-3); }
.btn-sm { min-height: 36px; padding: 6px 12px; font-size: 14px; border-radius: 8px; }
.btn-lg { min-height: 52px; padding: 14px 26px; font-size: 17px; border-radius: 12px; }
@media (max-width: 420px) { .btn-lg { white-space: normal; text-align: center; padding: 14px 20px; } }
.btn-block { width: 100%; white-space: normal; text-align: center; }
.btn-icon { padding: 0; width: 44px; }
.btn-icon.btn-sm { width: 36px; }

/* Forms */
.field { display: flex; flex-direction: column; gap: 6px; margin-bottom: 14px; }
.field > span, .label { font-size: .86rem; font-weight: 600; color: var(--ink-2); }
.field small { color: var(--ink-3); font-size: .8rem; }
input[type=text], input[type=email], input[type=password], input[type=number], input[type=date], input[type=search], input[type=url], input[type=tel], select, textarea {
  width: 100%; min-height: 46px; padding: 10px 12px;
  font: 16px/1.3 var(--font); color: var(--ink);
  background: var(--bg); border: 1px solid var(--line-2); border-radius: 10px;
  transition: border-color .15s, box-shadow .15s;
  -webkit-appearance: none; appearance: none;
}
select { background-image: linear-gradient(45deg, transparent 50%, var(--ink-3) 50%), linear-gradient(135deg, var(--ink-3) 50%, transparent 50%); background-position: calc(100% - 18px) 50%, calc(100% - 13px) 50%; background-size: 5px 5px; background-repeat: no-repeat; padding-right: 34px; }
textarea { min-height: 120px; resize: vertical; }
input:focus, select:focus, textarea:focus { outline: none; border-color: var(--blue); box-shadow: 0 0 0 3px color-mix(in srgb, var(--blue) 18%, transparent); }
input[aria-invalid=true], .has-error input { border-color: var(--danger); box-shadow: 0 0 0 3px color-mix(in srgb, var(--danger) 20%, transparent); }
/* A field that cannot be changed (signed line, locked setting) looks it, and stays readable (iPhone greys disabled text out). */
input:disabled, select:disabled, textarea:disabled { background-color: var(--bg-2); color: var(--ink-2); -webkit-text-fill-color: var(--ink-2); opacity: 1; cursor: not-allowed; }
.field small.field-error { color: var(--danger); font-weight: 600; }
/* Promo codes: the optional field (sign-up, billing) and the confirmation of what a code gives */
.promo-field { margin: -2px 0 14px; }
.promo-field > summary { cursor: pointer; display: inline-block; font-size: .9rem; font-weight: 600; color: var(--blue); padding: 4px 0; }
.promo-field[open] > summary { margin-bottom: 8px; }
.promo-applied { display: flex; gap: 8px; align-items: flex-start; padding: 10px 12px; margin-bottom: 14px; border-radius: 10px; background: var(--ok-soft); color: var(--ink); font-size: .92rem; }
.promo-applied .i { color: var(--ok); flex: none; margin-top: 2px; }
.promo-redeem { max-width: 460px; margin: 18px auto 0; text-align: center; }
.promo-row { display: flex; gap: 8px; align-items: flex-start; justify-content: center; }
.promo-row .field { flex: 1; max-width: 260px; margin: 0; }
.promo-row input { text-transform: uppercase; }
.promo-field input[name=code] { text-transform: uppercase; }
.price-was { font-size: .55em; color: var(--ink-3); font-weight: 600; margin-right: 4px; }
.check { display: flex; gap: 10px; align-items: flex-start; font-size: .95rem; cursor: pointer; margin-bottom: 12px; }
.check input { width: 20px; height: 20px; margin: 2px 0 0; flex: none; accent-color: var(--navy); }
input::placeholder, textarea::placeholder { color: var(--ink-3); opacity: .8; }
.hp { position: absolute; left: -9999px; }

/* Messages */
.flash { display: flex; gap: 10px; align-items: flex-start; padding: 12px 14px; border-radius: 10px; margin: 0 0 16px; font-size: .95rem; border: 1px solid transparent; }
.flash-success { background: var(--ok-soft); color: var(--ok-ink); border-color: var(--ok-line); }
.flash-error { background: var(--danger-soft); color: var(--danger-ink); border-color: var(--danger-line); }
.flash-info { background: var(--blue-soft); color: var(--info-ink); border-color: var(--info-line); }
.flash-warn { background: var(--warn-soft); color: var(--warn-ink); border-color: var(--warn-line); }
.flash a { color: inherit; font-weight: 700; }
.flash .i { margin-top: 2px; }

.badge { display: inline-flex; align-items: center; gap: 4px; padding: 2px 8px; border-radius: 999px; font-size: .75rem; font-weight: 700; letter-spacing: .02em; background: var(--bg-3); color: var(--ink-2); white-space: nowrap; }
.badge-ok { background: var(--ok-soft); color: var(--ok); }
.badge-warn { background: var(--warn-soft); color: var(--warn); }
.badge-danger { background: var(--danger-soft); color: var(--danger); }
.badge-info { background: var(--blue-soft); color: var(--blue); }

.card { background: var(--bg); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px; box-shadow: var(--shadow-1); }
.card > h2:first-child, .card > h3:first-child { margin-top: 0; }

.logo { display: inline-flex; align-items: center; gap: 10px; font-weight: 800; color: var(--ink); text-decoration: none; letter-spacing: -0.02em; font-size: 1.12rem; }
.logo img { width: 34px; height: 34px; }
.logo span em { font-style: normal; color: var(--blue); }

/* Tables (content) */
.table-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; margin: 0 0 1.2rem; border: 1px solid var(--line); border-radius: 10px; }
.table-wrap table { width: 100%; border-collapse: collapse; font-size: .92rem; }
.table-wrap th, .table-wrap td { padding: 9px 12px; text-align: left; border-bottom: 1px solid var(--line); vertical-align: top; }
.table-wrap th { background: var(--bg-2); font-size: .8rem; text-transform: uppercase; letter-spacing: .04em; color: var(--ink-2); white-space: nowrap; }
.table-wrap tr:last-child td { border-bottom: 0; }

/* Shared by the website and the app: check lists and the lifetime-access price card */
.checklist { list-style: none; padding: 0; margin: 0 0 1.2rem; }
.checklist li { display: flex; gap: 10px; margin-bottom: 10px; color: var(--ink-2); }
.checklist .i { color: var(--ok); margin-top: 4px; }
.plans { display: grid; gap: 18px; max-width: 860px; margin: 0 auto; }
@media (min-width: 760px) { .plans { grid-template-columns: 1fr 1fr; } }
.plans.plans-single { max-width: 460px; }
@media (min-width: 760px) { .plans.plans-single { grid-template-columns: 1fr; } }
.plan { position: relative; background: var(--bg); border: 1px solid var(--line); border-radius: 18px; padding: 28px; box-shadow: var(--shadow-1); display: flex; flex-direction: column; }
.plan.featured { border: 2px solid var(--navy); box-shadow: var(--shadow-2); }
.plans > * { min-width: 0; }
@media (max-width: 480px) { .plan { padding: 24px 18px; } }
.plan .ribbon { position: absolute; top: -13px; left: 50%; transform: translateX(-50%); background: var(--amber); color: var(--amber-ink); font-weight: 800; font-size: .78rem; padding: 4px 12px; border-radius: 999px; white-space: nowrap; }
.plan h3 { font-size: 1.05rem; color: var(--ink-2); text-transform: uppercase; letter-spacing: .08em; }
.price { font-size: 2.8rem; font-weight: 800; letter-spacing: -0.03em; line-height: 1; margin: 8px 0 4px; }
.price small { font-size: 1rem; font-weight: 600; color: var(--ink-3); letter-spacing: 0; }
.plan .checklist { margin: 18px 0 24px; flex: 1; }


dialog { border: 0; padding: 0; color: var(--ink); background: var(--bg); }
dialog::backdrop { background: var(--overlay); backdrop-filter: blur(2px); }

/* Signature pad (page, instructor and organisation signatures): always white, like paper */
:root { --sigpad-bg: #ffffff; --sigpad-hint: #5a6578; --sigpad-rule: #c9d1dd; }
.sigpad-wrap { position: relative; background: var(--sigpad-bg); border: 1.5px dashed var(--line-2); border-radius: 14px; touch-action: none; }
.sigpad-wrap canvas { display: block; width: 100%; height: 220px; border-radius: 14px; cursor: crosshair; }
.sigpad-wrap canvas[aria-invalid=true] { outline: 2px solid var(--danger); outline-offset: -2px; }
.sigpad-hint { position: absolute; left: 0; right: 0; bottom: 36px; text-align: center; color: var(--sigpad-hint); font-size: .9rem; pointer-events: none; border-top: 1px solid var(--sigpad-rule); margin: 0 24px; padding-top: 6px; }

/* Organisation stamp: the form (partials/stamp-fields.php) and the stamp as it is shown */
.sf-media { display: grid; gap: 16px; margin: 2px 0 14px; }
@media (min-width: 640px) { .sf-media { grid-template-columns: minmax(0, 1fr) minmax(0, 1.3fr); } }
.sf-box { display: flex; flex-direction: column; gap: 8px; min-width: 0; }
.sf-box > .btn { align-self: flex-start; }
.sf-stamp { display: flex; flex-wrap: wrap; align-items: center; justify-content: center; gap: 8px; min-height: 180px; padding: 12px; background: var(--sigpad-bg); border: 1.5px dashed var(--line-2); border-radius: 14px; }
.sf-stamp[aria-invalid=true] { border-color: var(--danger); }
.sf-stamp img { flex-basis: 100%; max-width: 100%; max-height: 150px; object-fit: contain; }
.sf-upload { cursor: pointer; }
.sf-upload:focus-within { outline: 2px solid var(--blue); outline-offset: 2px; }
.sf-pad canvas { height: 180px; }
.sf-authorised input[aria-invalid=true] { outline: 2px solid var(--danger); outline-offset: 2px; }
/* Stamp and signature images sit on white, as on paper, in both themes (a coloured stamp stays its colour). */
.stamp-imgs { display: flex; align-items: center; justify-content: center; gap: 8px; padding: 4px 8px; background: #ffffff; border-radius: 8px; }
.stamp-imgs:empty { display: none; }
.stamp-imgs .st-stamp { height: 70px; max-width: 140px; object-fit: contain; }
.stamp-imgs .st-sig { height: 40px; max-width: 120px; object-fit: contain; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
}