/* tg-shop Mini App — native Telegram look, theme-driven, no framework. */

:root {
  /* Fallbacks; tg.js overwrites these from Telegram themeParams. */
  --tg-bg-color: #17212b;
  --tg-text-color: #f5f5f5;
  --tg-hint-color: #708499;
  --tg-link-color: #6ab3f3;
  --tg-button-color: #5288c1;
  --tg-button-text-color: #ffffff;
  --tg-secondary-bg-color: #232e3c;
  --tg-header-bg-color: #17212b;
  --tg-accent-text-color: #6ab3f3;
  --tg-section-bg-color: #17212b;
  --tg-section-header-text-color: #6ab3f3;
  --tg-section-separator-color: #111921;
  --tg-subtitle-text-color: #708499;
  --tg-destructive-text-color: #ec3942;
  --tg-bottom-bar-bg-color: #17212b;

  --safe-top: 0px;
  --safe-bottom: 0px;
  --content-top: 0px;
  --content-bottom: 0px;

  --radius: 14px;
  --radius-lg: 20px;
  --gap: 12px;
  --tab-h: 56px;
  --green: #31b545;
  --amber: #f5a623;

  color-scheme: dark light;
}

:root[data-scheme='light'] {
  color-scheme: light;
}

* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }

html, body {
  margin: 0;
  padding: 0;
  height: 100%;
  overscroll-behavior-y: contain;
}

body {
  background: var(--tg-bg-color);
  color: var(--tg-text-color);
  font: 15px/1.42 -apple-system, BlinkMacSystemFont, 'SF Pro Text', 'Segoe UI', Roboto,
    'Helvetica Neue', sans-serif;
  padding-top: var(--content-top);
  -webkit-font-smoothing: antialiased;
}

button, input, textarea, select {
  font: inherit;
  color: inherit;
}

a { color: var(--tg-link-color); text-decoration: none; }

/* ------------------------------------------------------------------ shell */
.app {
  min-height: 100%;
  padding: 0 0 calc(var(--tab-h) + var(--safe-bottom) + 12px);
}

.screen { display: none; padding: 12px 14px 8px; animation: fade 0.18s ease-out; }
.screen.active { display: block; }

@keyframes fade {
  from { opacity: 0; transform: translateY(4px); }
  to { opacity: 1; transform: none; }
}

.h1 {
  margin: 4px 0 14px;
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.2px;
}

.section-title {
  margin: 18px 2px 8px;
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.6px;
  color: var(--tg-section-header-text-color);
}

.muted { color: var(--tg-hint-color); }
.small { font-size: 13px; }
.tiny { font-size: 12px; }
.strong { font-weight: 600; }
.right { text-align: right; }
.center { text-align: center; }
.row { display: flex; align-items: center; gap: 10px; }
.row.wrap { flex-wrap: wrap; }
.spread { justify-content: space-between; }
.grow { flex: 1; min-width: 0; }
.ellipsis { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.hidden { display: none !important; }

/* ------------------------------------------------------------------ cards */
.card {
  background: var(--tg-secondary-bg-color);
  border-radius: var(--radius-lg);
  padding: 14px;
  margin-bottom: var(--gap);
}

.balance {
  background: linear-gradient(135deg,
    color-mix(in srgb, var(--tg-button-color) 90%, #000 10%),
    color-mix(in srgb, var(--tg-button-color) 55%, var(--tg-secondary-bg-color) 45%));
  color: #fff;
  border-radius: var(--radius-lg);
  padding: 18px;
  margin-bottom: 16px;
  box-shadow: 0 8px 24px -12px rgba(0, 0, 0, 0.55);
}

.balance .label { font-size: 12px; opacity: 0.8; text-transform: uppercase; letter-spacing: 0.6px; }
.balance .value { font-size: 30px; font-weight: 700; margin: 4px 0 2px; letter-spacing: -0.5px; }
.balance .sub { font-size: 13px; opacity: 0.85; }
.balance .actions { display: flex; gap: 8px; margin-top: 14px; }

/* ------------------------------------------------------------------- list */
.list {
  background: var(--tg-secondary-bg-color);
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-bottom: var(--gap);
}

.item {
  display: flex;
  align-items: center;
  gap: 12px;
  width: 100%;
  padding: 13px 14px;
  border: 0;
  background: none;
  text-align: left;
  cursor: pointer;
  position: relative;
}

.item + .item::before {
  content: '';
  position: absolute;
  top: 0;
  left: 52px;
  right: 0;
  height: 1px;
  background: var(--tg-section-separator-color);
  opacity: 0.7;
}

.item:active { background: color-mix(in srgb, var(--tg-bg-color) 40%, transparent); }
.item .ico {
  flex: 0 0 28px;
  width: 28px;
  height: 28px;
  display: grid;
  place-items: center;
  font-size: 20px;
}
.item .body { flex: 1; min-width: 0; }
.item .title { font-weight: 500; }
.item .sub { font-size: 13px; color: var(--tg-hint-color); margin-top: 1px; }
.item .after { color: var(--tg-hint-color); font-size: 14px; white-space: nowrap; }
.item .chev { color: var(--tg-hint-color); opacity: 0.6; }

/* ------------------------------------------------------------------ chips */
.chips {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding: 2px 0 10px;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}
.chips::-webkit-scrollbar { display: none; }

.chip {
  flex: 0 0 auto;
  padding: 8px 14px;
  border-radius: 999px;
  border: 0;
  background: var(--tg-secondary-bg-color);
  color: var(--tg-text-color);
  font-size: 14px;
  cursor: pointer;
  transition: transform 0.12s ease;
}
.chip:active { transform: scale(0.96); }
.chip.on {
  background: var(--tg-button-color);
  color: var(--tg-button-text-color);
  font-weight: 600;
}

/* --------------------------------------------------------------- products */
.grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

@media (min-width: 520px) {
  .grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

.tile {
  background: var(--tg-secondary-bg-color);
  border-radius: var(--radius);
  padding: 12px;
  border: 0;
  color: inherit;
  text-align: left;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-height: 118px;
  transition: transform 0.12s ease;
  position: relative;
  overflow: hidden;
}
.tile:active { transform: scale(0.975); }

.tile .emoji { font-size: 24px; line-height: 1; }
.tile .name {
  font-size: 14px;
  font-weight: 500;
  line-height: 1.28;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.tile .price { margin-top: auto; font-weight: 700; font-size: 15px; }
.tile .stars { font-size: 12px; color: var(--tg-hint-color); }

.badge {
  position: absolute;
  top: 10px;
  right: 10px;
  font-size: 11px;
  font-weight: 600;
  padding: 3px 7px;
  border-radius: 999px;
  background: color-mix(in srgb, var(--green) 22%, transparent);
  color: var(--green);
}
.badge.out { background: color-mix(in srgb, var(--amber) 20%, transparent); color: var(--amber); }
.badge.none {
  background: color-mix(in srgb, var(--tg-destructive-text-color) 18%, transparent);
  color: var(--tg-destructive-text-color);
}

/* ----------------------------------------------------------------- sheet */
.sheet-back {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.55);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.22s ease;
  z-index: 40;
  backdrop-filter: blur(2px);
}
.sheet-back.open { opacity: 1; pointer-events: auto; }

.sheet {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 41;
  background: var(--tg-bg-color);
  border-radius: 20px 20px 0 0;
  padding: 8px 16px calc(20px + var(--safe-bottom));
  max-height: 88vh;
  overflow-y: auto;
  transform: translateY(102%);
  transition: transform 0.26s cubic-bezier(0.32, 0.72, 0, 1);
  box-shadow: 0 -8px 40px -16px rgba(0, 0, 0, 0.6);
}
.sheet.open { transform: none; }

.sheet .handle {
  width: 36px;
  height: 4px;
  border-radius: 2px;
  background: var(--tg-hint-color);
  opacity: 0.45;
  margin: 6px auto 12px;
}

.sheet h2 { margin: 0 0 8px; font-size: 19px; line-height: 1.25; }
.sheet .desc {
  color: var(--tg-text-color);
  font-size: 14px;
  line-height: 1.5;
  white-space: pre-wrap;
  word-break: break-word;
  margin-bottom: 14px;
}
.sheet .desc b { font-weight: 600; }

/* ---------------------------------------------------------------- stepper */
.stepper {
  display: flex;
  align-items: center;
  gap: 2px;
  background: var(--tg-secondary-bg-color);
  border-radius: var(--radius);
  padding: 4px;
  margin: 12px 0;
}
.stepper button {
  flex: 0 0 44px;
  height: 40px;
  border: 0;
  border-radius: 10px;
  background: transparent;
  font-size: 22px;
  font-weight: 500;
  cursor: pointer;
}
.stepper button:active { background: var(--tg-bg-color); }
.stepper .qty { flex: 1; text-align: center; font-weight: 600; font-size: 16px; }
.stepper input {
  flex: 1;
  min-width: 0;
  border: 0;
  background: transparent;
  text-align: center;
  font-weight: 600;
  font-size: 16px;
  outline: none;
}

.totals {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding: 10px 0 2px;
}
.totals .sum { font-size: 22px; font-weight: 700; letter-spacing: -0.3px; }

/* --------------------------------------------------------------- buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: 100%;
  padding: 14px 16px;
  border: 0;
  border-radius: var(--radius);
  background: var(--tg-button-color);
  color: var(--tg-button-text-color);
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.12s ease, opacity 0.15s ease;
}
.btn:active { transform: scale(0.985); }
.btn[disabled] { opacity: 0.5; pointer-events: none; }
.btn.ghost {
  background: var(--tg-secondary-bg-color);
  color: var(--tg-text-color);
}
.btn.green { background: var(--green); color: #fff; }
.btn.red { background: var(--tg-destructive-text-color); color: #fff; }
.btn.slim { padding: 10px 14px; font-size: 14px; width: auto; }
.btn.mini { padding: 7px 11px; font-size: 13px; width: auto; border-radius: 10px; }

.btn-row { display: flex; gap: 8px; }
.btn-row .btn { flex: 1; }

/* ---------------------------------------------------------------- inputs */
.field { margin-bottom: 12px; }
.field label {
  display: block;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--tg-hint-color);
  margin: 0 2px 6px;
}
.input, .textarea, select.input {
  width: 100%;
  padding: 13px 14px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  background: var(--tg-secondary-bg-color);
  outline: none;
  transition: border-color 0.15s ease;
}
.input:focus, .textarea:focus { border-color: var(--tg-button-color); }
.textarea { min-height: 96px; resize: vertical; font-family: inherit; }

.switch {
  position: relative;
  flex: 0 0 46px;
  width: 46px;
  height: 28px;
  border-radius: 999px;
  background: var(--tg-hint-color);
  border: 0;
  cursor: pointer;
  transition: background 0.18s ease;
}
.switch::after {
  content: '';
  position: absolute;
  top: 3px;
  left: 3px;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: #fff;
  transition: transform 0.18s ease;
}
.switch.on { background: var(--green); }
.switch.on::after { transform: translateX(18px); }

/* ------------------------------------------------------------------ code */
.payload {
  display: block;
  background: var(--tg-secondary-bg-color);
  border-radius: 10px;
  padding: 11px 12px;
  font-family: 'SF Mono', ui-monospace, Menlo, Consolas, monospace;
  font-size: 13px;
  word-break: break-all;
  margin-bottom: 8px;
}

/* -------------------------------------------------------------- tab bar */
.tabs {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 30;
  display: flex;
  background: color-mix(in srgb, var(--tg-bottom-bar-bg-color) 92%, transparent);
  backdrop-filter: blur(14px);
  border-top: 1px solid var(--tg-section-separator-color);
  padding-bottom: var(--safe-bottom);
}

.tabs button {
  flex: 1;
  height: var(--tab-h);
  border: 0;
  background: none;
  color: var(--tg-hint-color);
  font-size: 10.5px;
  font-weight: 500;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 3px;
  cursor: pointer;
}
.tabs button .ic { font-size: 20px; line-height: 1; }
.tabs button.on { color: var(--tg-button-color); }

/* ------------------------------------------------------------- skeletons */
.skel {
  background: linear-gradient(90deg,
    var(--tg-secondary-bg-color) 25%,
    color-mix(in srgb, var(--tg-secondary-bg-color) 60%, var(--tg-hint-color) 12%) 37%,
    var(--tg-secondary-bg-color) 63%);
  background-size: 400% 100%;
  animation: shimmer 1.3s ease infinite;
  border-radius: var(--radius);
}
.skel.tile { min-height: 118px; }
.skel.line { height: 14px; margin-bottom: 8px; border-radius: 7px; }
.skel.big { height: 92px; }

@keyframes shimmer {
  0% { background-position: 100% 0; }
  100% { background-position: 0 0; }
}

/* ----------------------------------------------------------------- toast */
.toast {
  position: fixed;
  left: 50%;
  bottom: calc(var(--tab-h) + var(--safe-bottom) + 18px);
  transform: translate(-50%, 20px);
  z-index: 60;
  max-width: calc(100% - 32px);
  padding: 11px 16px;
  border-radius: 12px;
  background: rgba(20, 20, 22, 0.94);
  color: #fff;
  font-size: 14px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease, transform 0.2s ease;
}
.toast.show { opacity: 1; transform: translate(-50%, 0); }
.toast.err { background: var(--tg-destructive-text-color); }

/* ------------------------------------------------------------ empty state */
.empty {
  text-align: center;
  padding: 46px 20px;
  color: var(--tg-hint-color);
}
.empty .em { font-size: 40px; display: block; margin-bottom: 10px; }

/* --------------------------------------------------------------- metrics */
.metrics { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px; }
.metric {
  background: var(--tg-secondary-bg-color);
  border-radius: var(--radius);
  padding: 12px 13px;
}
.metric .k {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--tg-hint-color);
}
.metric .v { font-size: 19px; font-weight: 700; margin-top: 3px; letter-spacing: -0.3px; }
.metric .d { font-size: 12px; color: var(--green); margin-top: 1px; }

.bars { display: flex; align-items: flex-end; gap: 4px; height: 72px; margin-top: 10px; }
.bars div {
  flex: 1;
  background: var(--tg-button-color);
  border-radius: 4px 4px 0 0;
  min-height: 3px;
  opacity: 0.85;
}