:root {
  --paper: #edf0f3;
  --sheet: #ffffff;
  --ink: #1c2740;
  --ink-2: #5a6478;
  --rule: #d5dbe3;
  --accent: #23408e;
  --accent-ink: #ffffff;
  --ok: #2e7d5b;
  --wait: #a86a12;
  --danger: #b3372f;
  --warn-bg: #fbf1df;
  --field: #f5f7f9;
  --num: ui-rounded, "SF Pro Rounded", -apple-system, system-ui, sans-serif;
  --text: -apple-system, system-ui, "Segoe UI", Roboto, sans-serif;
  --mono: ui-monospace, "SF Mono", Menlo, monospace;
  --safe-b: env(safe-area-inset-bottom, 0px);
  --safe-t: env(safe-area-inset-top, 0px);
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    --paper: #0f1420;
    --sheet: #182032;
    --ink: #e6eaf2;
    --ink-2: #98a2b5;
    --rule: #2a3448;
    --accent: #7d97f0;
    --accent-ink: #0f1420;
    --ok: #5cbf92;
    --wait: #e0a64a;
    --danger: #f07a70;
    --warn-bg: #2d2617;
    --field: #111827;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 17px/1.4 var(--text);
  -webkit-text-size-adjust: 100%;
  -webkit-tap-highlight-color: transparent;
}

body { min-height: 100vh; min-height: 100dvh; }

#app {
  max-width: 560px;
  margin: 0 auto;
  padding: calc(var(--safe-t) + 12px) 16px calc(var(--safe-b) + 96px);
}

h1, h2, h3 { margin: 0; font-weight: 700; letter-spacing: -0.01em; }
h1 { font: 700 30px/1.15 var(--num); margin: 8px 0 4px; }
h2 { font-size: 20px; margin: 28px 0 10px; }
p { margin: 0 0 12px; }
.muted { color: var(--ink-2); }
.small { font-size: 15px; }

/* ---------- Кнопки й поля ---------- */

button, .button {
  appearance: none;
  border: 0;
  border-radius: 12px;
  padding: 14px 18px;
  font: 600 17px/1.2 var(--text);
  background: var(--accent);
  color: var(--accent-ink);
  width: 100%;
  cursor: pointer;
  display: block;
  text-align: center;
  text-decoration: none;
}
button + button { margin-top: 8px; }
button:disabled { opacity: 0.45; cursor: default; }
button.secondary { background: var(--field); color: var(--ink); box-shadow: inset 0 0 0 1px var(--rule); }
button.plain { background: none; color: var(--accent); padding: 12px 0; width: auto; display: inline-block; }
button.danger { background: none; color: var(--danger); box-shadow: inset 0 0 0 1px var(--rule); }
button.ok { background: var(--ok); color: #fff; }
.row-buttons { display: flex; gap: 8px; }
.row-buttons button { margin-top: 0; }

:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; }

label { display: block; margin: 14px 0 0; }
label > span { display: block; font-size: 15px; color: var(--ink-2); margin-bottom: 6px; }
input, textarea, select {
  width: 100%;
  font: 400 17px/1.3 var(--text);
  color: var(--ink);
  background: var(--field);
  border: 1px solid var(--rule);
  border-radius: 12px;
  padding: 13px 14px;
}
input.money { font-family: var(--num); font-size: 22px; font-variant-numeric: tabular-nums; }
textarea { min-height: 96px; resize: vertical; }

.segmented { display: flex; background: var(--field); border: 1px solid var(--rule); border-radius: 12px; padding: 3px; }
.segmented button { margin: 0; background: none; color: var(--ink); padding: 10px; border-radius: 9px; font-weight: 500; }
.segmented button[aria-pressed="true"] { background: var(--sheet); font-weight: 650; box-shadow: 0 1px 2px rgba(20, 30, 60, 0.18); }

/* ---------- Шапка й вкладки ---------- */

.top { display: flex; align-items: center; justify-content: space-between; min-height: 36px; }
.top .who { font-size: 15px; color: var(--ink-2); }

nav.tabs {
  position: fixed;
  left: 0; right: 0; bottom: 0;
  display: flex;
  justify-content: center;
  background: color-mix(in srgb, var(--sheet) 88%, transparent);
  -webkit-backdrop-filter: saturate(1.6) blur(18px);
  backdrop-filter: saturate(1.6) blur(18px);
  border-top: 1px solid var(--rule);
  padding: 6px 8px calc(var(--safe-b) + 6px);
  z-index: 5;
}
nav.tabs button {
  background: none;
  color: var(--ink-2);
  max-width: 140px;
  margin: 0;
  padding: 8px 4px;
  font: 600 13px/1.1 var(--text);
  position: relative;
}
nav.tabs button .glyph { display: block; font: 600 21px/1 var(--num); margin-bottom: 4px; }
nav.tabs button[aria-current="page"] { color: var(--accent); }
nav.tabs .badge {
  position: absolute; top: 2px; left: calc(50% + 10px);
  min-width: 18px; height: 18px; border-radius: 9px; padding: 0 5px;
  background: var(--danger); color: #fff; font: 700 12px/18px var(--num);
}

/* ---------- Сповіщення й банери ---------- */

.toast {
  position: fixed;
  left: 16px; right: 16px;
  top: calc(var(--safe-t) + 10px);
  max-width: 528px;
  margin: 0 auto;
  background: var(--ink);
  color: var(--paper);
  border-radius: 14px;
  padding: 13px 16px;
  font-size: 15px;
  z-index: 10;
  box-shadow: 0 8px 28px rgba(10, 20, 40, 0.28);
}
.toast.error { background: var(--danger); color: #fff; }

.banner {
  background: var(--warn-bg);
  border-radius: 14px;
  padding: 13px 16px;
  margin: 12px 0;
  font-size: 15px;
}
.banner button { margin-top: 10px; }

.notice {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  border-bottom: 1px solid var(--rule);
  padding: 12px 0;
  font-size: 15px;
}
.notice p { margin: 0; flex: 1; }
.notice time { display: block; color: var(--ink-2); font-size: 13px; margin-top: 2px; }
.notice button { width: 32px; height: 32px; padding: 0; border-radius: 16px; background: var(--field); color: var(--ink-2); flex: none; font-size: 15px; }

/* ---------- Угода: квитанція ---------- */

.slip {
  position: relative;
  background: var(--sheet);
  border-radius: 4px 4px 14px 14px;
  margin: 22px 0 14px;
  padding: 20px 18px 18px;
}
/* Перфорація відривного краю квитанції. */
.slip::before {
  content: "";
  position: absolute;
  left: 0; right: 0; top: -6px;
  height: 12px;
  background: radial-gradient(circle at 7px 0, var(--paper) 4.5px, var(--sheet) 5px) 0 6px / 14px 12px repeat-x;
}
.slip-head { display: flex; justify-content: space-between; gap: 12px; align-items: baseline; }
.slip-head h3 { font-size: 18px; overflow-wrap: anywhere; }
.slip .total {
  font: 700 36px/1.05 var(--num);
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.02em;
  margin: 10px 0 2px;
}
.slip .total small { font-size: 18px; font-weight: 600; color: var(--ink-2); margin-left: 4px; }
.slip .facts { font-size: 15px; color: var(--ink-2); margin: 0 0 12px; }
.slip .facts div { font-variant-numeric: tabular-nums; }
.flag { background: var(--warn-bg); border-radius: 10px; padding: 9px 12px; font-size: 15px; margin: 8px 0; }
.slip .actions { margin-top: 16px; }

.status { font: 600 14px/1.2 var(--text); white-space: nowrap; flex: none; }
.status.pending, .status.waiting_data { color: var(--wait); }
.status.approved { color: var(--ok); }

.parts { list-style: none; margin: 8px 0 0; padding: 0; border-top: 1px dashed var(--rule); }
.parts li {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 0;
  border-bottom: 1px dashed var(--rule);
  font-size: 15px;
}
.parts li b { font: 650 16px/1.2 var(--num); font-variant-numeric: tabular-nums; white-space: nowrap; }
.parts .qty { color: var(--ink-2); display: block; font-size: 14px; }

.invoice { border-top: 1px dashed var(--rule); padding: 14px 0 4px; font-size: 15px; }
.invoice h4 { margin: 0 0 4px; font-size: 16px; }
.invoice dl { display: grid; grid-template-columns: auto 1fr; gap: 3px 12px; margin: 8px 0; }
.invoice dt { color: var(--ink-2); }
.invoice dd { margin: 0; overflow-wrap: anywhere; }
.iban { font: 500 15px/1.4 var(--mono); letter-spacing: 0.02em; }

/* ---------- Списки ---------- */

.list { list-style: none; margin: 0; padding: 0; background: var(--sheet); border-radius: 14px; }
.list li { padding: 13px 16px; border-bottom: 1px solid var(--rule); }
.list li:last-child { border-bottom: 0; }
.list .line { display: flex; justify-content: space-between; gap: 12px; align-items: baseline; }
.list .num { font: 600 16px/1.2 var(--num); font-variant-numeric: tabular-nums; white-space: nowrap; }
.list .sub { color: var(--ink-2); font-size: 14px; margin-top: 2px; }
.list .blocked { color: var(--danger); }

.summary {
  background: var(--sheet);
  border-radius: 14px;
  padding: 16px 18px;
  margin: 18px 0 12px;
}
.summary .total { font: 700 32px/1.1 var(--num); font-variant-numeric: tabular-nums; }
.summary .line { color: var(--ink-2); font-size: 15px; margin-top: 4px; }

.link-box { background: var(--sheet); border-radius: 14px; padding: 14px 16px; margin: 14px 0; overflow-wrap: anywhere; font: 500 14px/1.4 var(--mono); }

.center { text-align: center; padding-top: 18vh; }
.center h1 { margin-bottom: 10px; }
.center p { max-width: 34ch; margin: 0 auto 22px; }
.mark { width: 64px; height: 64px; border-radius: 15px; display: block; margin: 0 auto 18px; }

.empty { color: var(--ink-2); padding: 28px 0; }

/* Дрібні відступи класами: CSP забороняє вбудовані стилі. */
.hidden { display: none; }
.gap-s { margin-top: 8px; }
.gap-m { margin-top: 12px; }
.gap-l { margin-top: 20px; }
button.inline-danger { color: var(--danger); padding: 0; }

@media (prefers-reduced-motion: no-preference) {
  .toast { animation: drop 0.22s ease-out; }
  @keyframes drop { from { transform: translateY(-14px); opacity: 0; } }
}