:root {
  --bg: #0a0a0c;
  --surface: #141417;
  --surface-2: #1b1b20;
  --border: #27272e;
  --border-strong: #34343c;
  --text: #ffffff;
  --muted: #9a9aa4;
  --muted-dim: #6c6c76;
  --accent: #ff5d15;
  --accent-2: #ff8a4c;
  --danger: #ff2f01;
  --radius: 28px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  min-height: 100%;
  touch-action: manipulation;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  -webkit-font-smoothing: antialiased;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 24px;
  overflow: hidden;
  position: relative;
}

/* ---- ambient glow ---- */
.glow {
  position: fixed;
  border-radius: 50%;
  filter: blur(120px);
  opacity: 0.55;
  pointer-events: none;
  z-index: 0;
}
.glow--one {
  width: 480px; height: 480px;
  top: -160px; right: -120px;
  background: radial-gradient(circle, rgba(255, 93, 21, 0.55), transparent 70%);
}
.glow--two {
  width: 420px; height: 420px;
  bottom: -180px; left: -140px;
  background: radial-gradient(circle, rgba(255, 47, 1, 0.32), transparent 70%);
}

/* ---- card ---- */
.card {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 420px;
  background: linear-gradient(180deg, #16161a 0%, #111114 100%);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 32px 22px;
  box-shadow: 0 40px 80px -30px rgba(0, 0, 0, 0.9), inset 0 1px 0 rgba(255, 255, 255, 0.04);
}

/* ---- brand ---- */
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 28px;
}
.brand__mark {
  width: 38px; height: 38px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  color: #fff;
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-2) 55%, #ff2f01 100%);
  box-shadow: 0 8px 20px -8px rgba(255, 93, 21, 0.9);
}
.brand__name {
  font-size: 15px;
  font-weight: 800;
  letter-spacing: 0.02em;
  text-transform: lowercase;
  white-space: nowrap;
  background: linear-gradient(
    100deg,
    #74747e 0%,
    #ffffff 22%,
    var(--accent) 44%,
    #ffb187 56%,
    #ffffff 74%,
    #74747e 100%
  );
  background-size: 200% auto;
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  animation: brand-flow 5s linear infinite;
  will-change: background-position;
}

@keyframes brand-flow {
  from { background-position: 0% center; }
  to   { background-position: 200% center; }
}

/* ---- steps ---- */
.step { animation: fade 0.35s ease; }
.step[hidden] { display: none; }

@keyframes fade {
  from { opacity: 0; transform: translateY(6px); }
  to   { opacity: 1; transform: none; }
}

.title {
  margin: 0 0 8px;
  font-size: 24px;
  font-weight: 700;
  letter-spacing: -0.01em;
  text-align: center;
}
.subtitle {
  margin: 0 0 24px;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.5;
  text-align: center;
}

/* ---- QR ---- */
.qr {
  position: relative;
  width: 236px;
  height: 236px;
  margin: 0 auto;
  border-radius: 20px;
  background: #16161a;
  padding: 10px;
  display: grid;
  place-items: center;
  overflow: hidden;
  transition: background 0.25s, box-shadow 0.25s;
}
.qr--loading {
  background: var(--surface-2);
  box-shadow: inset 0 0 0 1px var(--border);
}
.qr:not(.qr--loading) { cursor: pointer; }
.qr:not(.qr--loading) {
  box-shadow: 0 0 0 1px rgba(255, 93, 21, 0.3), 0 20px 44px -22px rgba(255, 93, 21, 0.55);
}

.qr__canvas { width: 100%; height: 100%; display: block; border-radius: 8px; }
.qr__canvas[hidden] { display: none; }
.qr__image { width: 100%; height: 100%; display: block; border-radius: 8px; }
.qr__image[hidden] { display: none; }
.qr__placeholder { display: grid; place-items: center; width: 100%; height: 100%; }
.qr__expired {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
  align-items: center;
  justify-content: center;
  background: rgba(12, 12, 14, 0.92);
  color: #fff;
  border-radius: 20px;
  font-size: 14px;
}
.qr__expired[hidden] { display: none; }

/* circular loading indicator */
.loader {
  --size: 54px;
  width: var(--size);
  height: var(--size);
  border-radius: 50%;
  border: 4px solid rgba(255, 255, 255, 0.08);
  border-top-color: var(--accent);
  border-right-color: var(--accent-2);
  animation: spin 0.85s linear infinite;
  position: relative;
}
.loader::after {
  content: "";
  position: absolute;
  inset: 7px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 93, 21, 0.14), transparent 70%);
  animation: pulse-glow 1.6s ease-in-out infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
@keyframes pulse-glow {
  0%, 100% { opacity: 0.35; transform: scale(0.9); }
  50%      { opacity: 1;    transform: scale(1.1); }
}

/* ---- status ---- */
.status {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  margin: 20px 0 4px;
  font-size: 13.5px;
  color: var(--muted);
}
.status__dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--muted-dim);
  box-shadow: 0 0 0 0 rgba(255, 93, 21, 0.5);
}
.status__dot[data-state="waiting"] { background: var(--muted-dim); }
.status__dot[data-state="scanned"],
.status__dot[data-state="need_otp"] {
  background: var(--accent);
  animation: pulse 1.4s infinite;
}
.status__dot[data-state="approved"],
.status__dot[data-state="done"] { background: #22c55e; }

@keyframes pulse {
  0%   { box-shadow: 0 0 0 0 rgba(255, 93, 21, 0.5); }
  70%  { box-shadow: 0 0 0 9px rgba(255, 93, 21, 0); }
  100% { box-shadow: 0 0 0 0 rgba(255, 93, 21, 0); }
}

/* ---- OTP ---- */
.otp {
  position: relative;
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 8px;
  margin: 4px 0 16px;
}
.otp__input {
  position: relative;
  z-index: 1;
  width: 100%;
  height: 58px;
  text-align: center;
  font-size: 22px;
  font-weight: 600;
  color: var(--text);
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 14px;
  outline: none;
  transition: border-color 0.3s, box-shadow 0.3s, background 0.3s, color 0.3s;
  caret-color: var(--accent);
}
.otp__input:focus {
  border-color: var(--accent);
  background: #202027;
  box-shadow: 0 0 0 3px rgba(255, 93, 21, 0.18);
}
.otp__input.filled { border-color: var(--border-strong); }
.otp--error .otp__input { border-color: var(--danger); }

/* ---- OTP spoiler (Telegram-like cover while verifying) ---- */
.otp__spoiler {
  position: absolute;
  inset: -3px;
  z-index: 2;
  border-radius: 18px;
  overflow: hidden;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.otp--checking .otp__spoiler {
  opacity: 1;
}
.otp--checking .otp__input {
  color: transparent;
  caret-color: transparent;
}

/* ---- OTP success: green pulse, hide stays ---- */
.otp--ok .otp__spoiler {
  border: 1px solid rgba(34, 197, 94, 0.75);
  box-shadow: 0 0 0 3px rgba(34, 197, 94, 0.28), 0 0 26px rgba(34, 197, 94, 0.45);
  animation: otpOkPulse 0.75s ease;
}
@keyframes otpOkPulse {
  0%   { box-shadow: 0 0 0 0 rgba(34, 197, 94, 0); }
  55%  { box-shadow: 0 0 0 6px rgba(34, 197, 94, 0.25), 0 0 34px rgba(34, 197, 94, 0.6); }
  100% { box-shadow: 0 0 0 3px rgba(34, 197, 94, 0.28), 0 0 26px rgba(34, 197, 94, 0.45); }
}

/* ---- OTP loading: fields melt away, spinner takes their place ---- */
.otp__loader {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.35s ease 0.15s;
}
.otp__loader .loader { --size: 40px; border-width: 3px; }
.otp--loading .otp__loader { opacity: 1; }
.otp--loading .otp__input,
.otp--loading .otp__spoiler {
  opacity: 0;
  transition: opacity 0.35s ease;
  pointer-events: none;
}

.hint {
  margin: 0;
  font-size: 12.5px;
  color: var(--muted-dim);
  line-height: 1.45;
  text-align: center;
}

/* ---- result ---- */
.step--result { text-align: center; }
.result__ring {
  width: 68px; height: 68px;
  margin: 8px auto 18px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  color: #22c55e;
  background: rgba(34, 197, 94, 0.1);
  border: 1px solid rgba(34, 197, 94, 0.35);
}
.result__ring--error {
  color: var(--danger);
  background: rgba(255, 47, 1, 0.1);
  border-color: rgba(255, 47, 1, 0.35);
  font-size: 26px;
  font-weight: 700;
}

/* ---- buttons ---- */
.btn {
  font-family: inherit;
  font-size: 14px;
  font-weight: 600;
  border: none;
  border-radius: 14px;
  padding: 12px 20px;
  cursor: pointer;
  transition: transform 0.12s, filter 0.15s, background 0.15s;
}
.btn:active { transform: scale(0.98); }
.btn--primary {
  width: 100%;
  margin-top: 6px;
  color: #fff;
  background: linear-gradient(135deg, var(--accent), #ff2f01);
  box-shadow: 0 10px 26px -12px rgba(255, 93, 21, 0.9);
}
.btn--primary:hover { filter: brightness(1.08); }
.btn--ghost {
  color: #fff;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.16);
}
.btn--ghost:hover { background: rgba(255, 255, 255, 0.14); }

/* ---- inline link (switch auth method) ---- */
.linkback {
  display: block;
  margin: 16px auto 0;
  padding: 4px 6px;
  font-family: inherit;
  font-size: 13px;
  font-weight: 600;
  color: var(--muted);
  background: none;
  border: none;
  cursor: pointer;
  transition: color 0.15s;
}
.linkback:hover { color: var(--accent); }

/* ---- token input ---- */
.token { margin: 4px 0 14px; }
.token__input {
  width: 100%;
  padding: 14px 16px;
  font-family: inherit;
  font-size: 13px;
  color: var(--text);
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 14px;
  outline: none;
  transition: border-color 0.3s, box-shadow 0.3s, background 0.3s;
}
.token__input::placeholder { color: var(--muted-dim); }
.token__input:focus {
  border-color: var(--accent);
  background: #202027;
  box-shadow: 0 0 0 3px rgba(255, 93, 21, 0.18);
}
.token__input.is-loading { border-color: var(--accent); }
.token__input.is-ok {
  border-color: rgba(34, 197, 94, 0.75);
  box-shadow: 0 0 0 3px rgba(34, 197, 94, 0.2);
}
.token__input.is-error { border-color: var(--danger); }

.token__state {
  margin: 0 0 4px;
  font-size: 13px;
  text-align: center;
  color: var(--muted);
}
.token__state[data-state="loading"] { color: var(--accent); }
.token__state[data-state="ok"] { color: #22c55e; }
.token__state[data-state="error"] { color: var(--danger); }

/* ---- footer ---- */
.footer {
  margin-top: 26px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
  text-align: center;
  font-size: 11.5px;
  color: var(--muted-dim);
}