/* EDIT HERE: colors, font, width and corners.
   Telegram supplies --tg-theme-* colors. Replace a whole var(...) with a hex
   color to force your own color inside Telegram too. Dark-mode colors follow. */
:root {
  color-scheme: light;
  --page-bg: var(--tg-theme-bg-color, #fff);
  --page-text: var(--tg-theme-text-color, #18222d);
  /* Repeating doodles: set opacity to 0 to hide, or adjust size to scale them. */
  --wallpaper-image: url('/login-page-pattern.svg');
  --wallpaper-color: var(--page-text);
  --wallpaper-opacity: 0.07;
  --wallpaper-size: 420px;
  --muted: var(--tg-theme-hint-color, #677583);
  --surface: var(--tg-theme-secondary-bg-color, #f3f6f9);
  --accent: var(--tg-theme-button-color, #3390ec);
  --accent-text: var(--tg-theme-button-text-color, #fff);
  --error: var(--tg-theme-destructive-text-color, #d33);
  --send-code-bg: #d33;
  --send-code-text: #fff;
  --logo-start: #37b6f6;
  --logo-end: #2188db;
  --logo-icon: #fff;
  --logo-shadow: #229ed922;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --page-width: 400px;
  --control-radius: 12px;
  --line: color-mix(in srgb, var(--page-text) 16%, transparent);
}
@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;
    --page-bg: var(--tg-theme-bg-color, #17212b);
    --page-text: var(--tg-theme-text-color, #f5f5f5);
    --muted: var(--tg-theme-hint-color, #a2acb7);
    --surface: var(--tg-theme-secondary-bg-color, #232e3c);
    --wallpaper-opacity: 0.12;
  }
}

/* Layout and component styles. Most edits only need the settings above. */
* { box-sizing: border-box; }
body {
  isolation: isolate;
  margin: 0;
  min-height: 100vh;
  min-height: 100svh;
  padding: clamp(24px, 5vh, 56px) 20px calc(28px + env(safe-area-inset-bottom));
  font: 16px/1.5 var(--font);
  -webkit-font-smoothing: antialiased;
  background: var(--page-bg);
  color: var(--page-text);
}
/* A separate decorative layer keeps text and controls fully opaque and clickable. */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background: var(--wallpaper-color);
  opacity: var(--wallpaper-opacity);
  -webkit-mask-image: var(--wallpaper-image);
  mask-image: var(--wallpaper-image);
  -webkit-mask-size: var(--wallpaper-size) auto;
  mask-size: var(--wallpaper-size) auto;
  -webkit-mask-repeat: repeat;
  mask-repeat: repeat;
}
main { max-width: var(--page-width); margin: 0 auto; }
.hero { text-align: center; margin-bottom: 28px; }
.telegram-mark {
  display: grid;
  place-items: center;
  width: 88px;
  height: 88px;
  margin: 0 auto 24px;
  border-radius: 50%;
  background: linear-gradient(150deg, var(--logo-start), var(--logo-end));
  box-shadow: 0 8px 24px var(--logo-shadow);
}
.telegram-mark svg { width: 54px; height: 54px; margin-right: 3px; fill: var(--logo-icon); }
h1 { margin: 0; font-size: clamp(26px, 7vw, 30px); line-height: 1.2; letter-spacing: -0.7px; font-weight: 650; }
.subtitle { max-width: 340px; margin: 12px auto 0; font-size: 15px; color: var(--muted); }
.account {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  max-width: 100%;
  margin: 16px 0 0;
  padding: 7px 12px;
  border-radius: 20px;
  background: var(--surface);
  font-size: 14px;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}
.account svg { width: 16px; height: 16px; flex-shrink: 0; color: var(--muted); }
label { display: block; margin: 18px 0 8px; font-size: 14px; font-weight: 600; }
input {
  width: 100%;
  min-height: 54px;
  padding: 14px 16px;
  font: inherit;
  color: inherit;
  background: var(--page-bg);
  border: 1px solid var(--line);
  border-radius: var(--control-radius);
  transition: border-color 150ms, box-shadow 150ms;
}
input:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 14%, transparent); }
input::placeholder { color: var(--muted); opacity: 0.7; }
input.code-input {
  min-height: 66px;
  padding-inline: 12px;
  text-align: center;
  font-size: 28px;
  font-weight: 500;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.24em;
}
.code-digits { display: grid; grid-template-columns: repeat(var(--digits, 5), minmax(0, 1fr)); gap: 8px; }
.code-digits input {
  min-width: 0;
  min-height: 64px;
  padding: 12px 0;
  text-align: center;
  font-size: 28px;
  font-weight: 500;
  font-variant-numeric: tabular-nums;
  caret-color: var(--accent);
}
.code-digits input[aria-invalid="true"] { border-color: var(--error); }
button {
  width: 100%;
  min-height: 52px;
  margin-top: 20px;
  padding: 14px 20px;
  font: inherit;
  font-weight: 600;
  border: 0;
  border-radius: var(--control-radius);
  background: var(--accent);
  color: var(--accent-text);
  cursor: pointer;
  transition: filter 150ms, transform 150ms;
}
button:hover:not(:disabled) { filter: brightness(1.06); }
button:active:not(:disabled) { transform: translateY(1px); }
button:focus-visible { outline: 3px solid var(--accent); outline-offset: 3px; }
button:disabled { opacity: 0.5; cursor: default; }
#send-code { background: var(--send-code-bg); color: var(--send-code-text); }
#send-code:focus-visible { outline-color: var(--send-code-bg); }
[hidden] { display: none !important; }
.hint { margin: 10px 0 0; font-size: 14px; color: var(--muted); }
.error { margin: 12px 0 0; font-size: 14px; color: var(--error); }
.hint:empty, .error:empty { display: none; }
#message { margin: 0; padding: 20px; border-radius: 16px; background: var(--surface); text-align: center; color: var(--muted); }
#progress { margin-top: 24px; text-align: center; }
#progress::before {
  content: "";
  display: block;
  width: 28px;
  height: 28px;
  margin: 0 auto 16px;
  border: 3px solid var(--line);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 900ms linear infinite;
}
#done { text-align: center; }
#done-text { font-size: 14px; color: var(--muted); }
@keyframes spin { to { transform: rotate(360deg); } }
@media (prefers-reduced-motion: reduce) {
  input, button { transition: none; }
  #progress::before { animation: none; }
}
@media (max-height: 700px) {
  body { padding-top: 20px; }
  .telegram-mark { width: 72px; height: 72px; margin-bottom: 20px; }
  .telegram-mark svg { width: 44px; height: 44px; }
  .hero { margin-bottom: 20px; }
}