@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500;600;700&display=swap');

:root {
  color-scheme: dark;
  --page: #0a0d0c;
  --surface: #0d1512;
  --field: #0f1815;
  --line: rgba(57, 255, 138, .28);
  --line-soft: rgba(57, 255, 138, .14);
  --text: #f2f7f4;
  --muted: #7c9188;
  --accent: #39ff8a;
  --accent-dim: #1f7a4d;
  --accent-hover: #6dffab;
  --danger: #ff4d64;
  --success: #39ff8a;
  --font-body: 'Space Grotesk', 'Segoe UI', Arial, Helvetica, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', ui-monospace, 'Courier New', monospace;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-width: 320px;
  background:
    radial-gradient(circle at 100% 0%, rgba(57, 255, 138, .09), transparent 30rem),
    radial-gradient(circle at 0% 100%, rgba(57, 255, 138, .05), transparent 26rem),
    var(--page);
  background-attachment: fixed;
  color: var(--text);
  font: 14px/1.5 var(--font-body);
}

.site-header {
  position: relative;
  min-height: 88px;
  border-bottom: 1px solid var(--line-soft);
  background: rgba(9, 12, 11, .86);
  box-shadow: 0 8px 30px rgba(0, 0, 0, .3);
  backdrop-filter: blur(16px);
}

.header-inner, .page { width: min(1125px, calc(100% - 48px)); margin: 0 auto; }

.header-inner { display: flex; align-items: center; min-height: 88px; }

.brand {
  display: inline-flex;
  align-items: center;
  gap: 1px;
  color: #fff;
  font-family: var(--font-mono);
  font-size: 17px;
  font-weight: 700;
  letter-spacing: .03em;
  text-decoration: none;
  text-transform: lowercase;
}
.brand::before,
.brand::after {
  color: var(--accent);
  font-weight: 500;
  opacity: .85;
}
.brand::before { content: '<'; margin-right: 2px; }
.brand::after { content: '>'; margin-left: 2px; }

.site-nav { display: flex; align-items: center; gap: 26px; margin-left: 44px; }
.site-nav a {
  position: relative;
  padding: 7px 0;
  color: #8a9992;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 500;
  text-decoration: none;
  transition: color .25s ease;
}
.site-nav a::after {
  position: absolute; right: 0; bottom: 1px; left: 0; height: 1px; content: '';
  transform: scaleX(0); transform-origin: right;
  background: var(--accent);
  box-shadow: 0 0 8px rgba(57, 255, 138, .7);
  transition: transform .25s ease;
}
.site-nav a:hover, .site-nav a[aria-current="page"] { color: #fff; }
.site-nav a:hover::after, .site-nav a[aria-current="page"]::after { transform: scaleX(1); transform-origin: left; }

.page { padding: 18px 0 32px; }

h1 {
  margin: 0 0 14px;
  color: #fff;
  font-size: 20px;
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -.01em;
}

.content-card {
  position: relative;
  min-height: 300px;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: var(--surface);
  box-shadow: 0 0 0 1px rgba(0, 0, 0, .2), 0 20px 60px rgba(0, 0, 0, .35), inset 0 1px 0 rgba(255, 255, 255, .02);
}

.checker-account-header { margin-bottom: 18px; color: #d7e5dd; font-size: 17px; font-weight: 600; }

.checker-account-form__row { position: relative; flex: 1 1 0; }
.checker-account-form__input { position: relative; overflow: hidden; border-radius: 14px; border: 1px solid var(--line-soft); }
.checker-account-form__input[data-showed] textarea { display: none; }
.checker-account-form__input[data-showed="list"] .fn_list, .checker-account-form__input[data-showed="source"] .fn_source { display: block; }
.checker-account-form__input-textarea {
  width: 100%; height: 200px; padding: 26px 24px; border: 0; border-radius: 14px; resize: vertical; outline: none;
  background: var(--field); color: var(--text);
  font: 13px/1.6 var(--font-mono);
}
.checker-account-form__input-textarea:hover, .checker-account-form__input-textarea:focus { background: #121c18; }
.checker-account-form__input-textarea::placeholder { color: #5f7168; }

.checker-account-form__submit { margin: 16px 0 8px; text-align: center; }
.button {
  min-width: 120px; min-height: 48px; padding: 5px 20px; border: 1px solid var(--accent); border-radius: 14px;
  background: var(--accent); color: #06110a; cursor: pointer;
  font-family: var(--font-mono); font-size: 14px; font-weight: 700; letter-spacing: .01em;
  transition: background .2s ease, box-shadow .2s ease, transform .1s ease;
}
.button:hover { background: var(--accent-hover); box-shadow: 0 0 24px rgba(57, 255, 138, .35); }
.button:active { transform: translateY(1px); }
.button:disabled { cursor: wait; opacity: .5; box-shadow: none; }

.checker-account-form__status { min-height: 22px; margin-bottom: 18px; text-align: center; color: var(--muted); font-family: var(--font-mono); font-size: 12px; }
.checker-account-form__status span + span { margin-left: 12px; }

.checker-account-form__group { display: flex; gap: 24px; }

.checker-account-form__label {
  position: absolute; z-index: 2; top: 22px; left: 24px; display: flex; align-items: center; gap: 8px;
  height: 32px; padding: 0 14px; border: 1px solid #fff; border-radius: 34px;
  background: var(--surface);
  font-family: var(--font-mono); font-size: 12px; white-space: nowrap;
}
.checker-account-form__label_success { border-color: var(--success); box-shadow: 0 0 14px rgba(57, 255, 138, .18); }
.checker-account-form__label_success::before { content: '✓'; color: var(--success); font-weight: 700; }
.checker-account-form__label_error { border-color: var(--danger); }
.checker-account-form__label_error::before { content: '×'; color: var(--danger); font-weight: 700; font-size: 16px; }
.checker-account-form__label-value { font-weight: 700; }

.checker-account-form__bottom { padding: 0 40px 10px 24px; }
.checker-account-form__control { display: flex; align-items: center; justify-content: flex-end; gap: 10px; }
.checker-account-form__control-title { color: var(--muted); font-family: var(--font-mono); font-size: 12px; }
.checker-account-form__select {
  width: 108px; height: 28px; border: 1px solid var(--line-soft); border-radius: 6px; outline: none;
  background: var(--field); color: var(--text); font-family: var(--font-mono); font-weight: 600; font-size: 12px;
}
.checker-account-form__select option { background: #0e1613; }

.checker-account-form__clipboard { position: absolute; z-index: 3; right: 16px; bottom: 16px; width: 32px; height: 32px; border: 0; border-radius: 7px; background: transparent; color: transparent; cursor: pointer; }
.checker-account-form__clipboard::before, .checker-account-form__clipboard::after { position: absolute; content: ''; width: 11px; height: 13px; border: 1.5px solid #7c9188; border-radius: 2px; transition: border-color .2s ease, transform .2s ease; }
.checker-account-form__clipboard::before { top: 8px; left: 9px; }
.checker-account-form__clipboard::after { top: 11px; left: 12px; background: var(--field); }
.checker-account-form__clipboard:hover { background: rgba(57, 255, 138, .08); }
.checker-account-form__clipboard:hover::before, .checker-account-form__clipboard:hover::after { border-color: var(--accent); }
.checker-account-form__clipboard:active::after { transform: translate(-2px, -2px); }

.notice { margin: 0 0 29px; font-weight: 700; }
.notice--red { color: var(--danger); }
.intro { margin: 0 0 29px; font-size: 15px; font-weight: 600; }

.totp-form { max-width: 690px; }
.field-label { display: block; margin: 0 0 9px; color: #d9e6de; font-size: 13px; font-weight: 700; }
.key-field { position: relative; }
input {
  width: 100%; height: 52px; padding: 0 51px 0 17px; border: 1px solid var(--line-soft); border-radius: 12px;
  outline: 0; background: var(--field); color: var(--text); font: inherit; font-family: var(--font-mono); font-size: 15px;
}
input::placeholder { color: #5f7168; }
input:focus { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(57, 255, 138, .12); }
.clear-key { position: absolute; inset: 0 0 0 auto; width: 48px; border: 0; background: transparent; color: #7c9188; cursor: pointer; font-size: 22px; }
.clear-key:hover { color: var(--accent); }
.form-help { min-height: 20px; margin: 8px 0 18px; color: var(--muted); font-size: 12px; }
.form-help.error { color: var(--danger); }

.code-panel { display: grid; grid-template-columns: 1fr auto auto; align-items: center; gap: 18px; min-height: 107px; padding: 20px 23px; border: 1px solid var(--line-soft); border-radius: 14px; background: var(--field); }
.code-label { margin: 0 0 7px; color: var(--muted); font-family: var(--font-mono); font-size: 12px; }
.totp-code { margin: 0; color: var(--accent); font-family: var(--font-mono); font-size: clamp(31px, 5vw, 46px); font-weight: 700; letter-spacing: .12em; line-height: 1; text-shadow: 0 0 22px rgba(57, 255, 138, .28); }
.code-panel.is-empty .totp-code { color: #57685f; letter-spacing: .04em; font-size: 17px; text-shadow: none; }
.timer { display: grid; place-items: center; width: 54px; height: 54px; border: 3px solid #22322a; border-radius: 50%; color: #fff; font-family: var(--font-mono); font-weight: 700; }
.timer.warning { border-color: var(--danger); }
.totp-copy { position: relative; width: 38px; height: 38px; border: 0; border-radius: 7px; background: transparent; color: transparent; cursor: pointer; }
.totp-copy::before, .totp-copy::after { position: absolute; content: ''; width: 12px; height: 14px; border: 1.5px solid #7c9188; border-radius: 2px; transition: border-color .2s ease, transform .2s ease; }
.totp-copy::before { top: 9px; left: 10px; }
.totp-copy::after { top: 12px; left: 13px; background: var(--field); }
.totp-copy:hover { background: rgba(57, 255, 138, .08); }
.totp-copy:hover::before, .totp-copy:hover::after { border-color: var(--accent); }
.totp-copy:active::after { transform: translate(-2px, -2px); }
.totp-copy span { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.totp-copy.copied::after { border-color: var(--success); }
.totp-copy.copied::before { border-color: var(--success); }
.url-note { margin: 21px 0 0; color: var(--muted); font-size: 12px; }
code { padding: 2px 5px; border-radius: 4px; background: #0f1815; border: 1px solid var(--line-soft); color: #a9f2c4; font-family: var(--font-mono); }

@media (max-width: 620px) {
  .header-inner { flex-direction: column; align-items: flex-start; justify-content: center; gap: 15px; padding: 18px 0; }
  .site-header, .header-inner { min-height: 0; }
  .site-nav { margin-left: 0; gap: 18px; }
  .site-nav a { padding-left: 10px; padding-right: 10px; }
  .header-inner, .page { width: min(100% - 30px, 1125px); }
  .content-card { padding: 20px; }
  .checker-account-form__group { flex-direction: column; gap: 30px; }
  .checker-account-form__input-textarea { height: 180px; }
  .checker-account-form__label { top: 32px; left: 50%; transform: translateX(-50%); }
  .checker-account-form__bottom { padding: 0 20px 30px; }
  .checker-account-form__control { justify-content: center; }
  .code-panel { grid-template-columns: 1fr auto; }
  .code-panel > div:first-child { grid-column: 1 / -1; }
  .totp-copy { grid-column: 1; justify-self: start; }
  .timer { justify-self: start; }
}