*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {

  --bg-page: #0D1117;
  --bg-card: rgba(22, 27, 34, 0.6);
  --border-color: #30363D;
  --text-main: #C9D1D9;
  --text-muted: #8B949E;
  --accent: #9B52FF;
  --btn-bg: #9B52FF;
  --btn-hover: #7E3EDC;
  --btn-text: #FFFFFF;
  --input-bg: #0D1117;
  --err-color: #F85149;
}

@media (prefers-color-scheme: light) {
  :root {

    --bg-page: #F6F8FA;
    --bg-card: #FFFFFF;
    --border-color: #D0D7DE;
    --text-main: #24292F;
    --text-muted: #57606A;
    --accent: #9B52FF;
    --btn-bg: #9B52FF;
    --btn-hover: #7E3EDC;
    --btn-text: #FFFFFF;
    --input-bg: #F6F8FA;
    --err-color: #CF222E;
  }
}

body {
  font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  letter-spacing: -0.015em;
  background-color: var(--bg-page);
  color: var(--text-main);
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 24px;
  position: relative;
  overflow: hidden;
}

.h1 {
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.03em;
  margin-bottom: 8px;
  color: var(--text-main);
}

.sub {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-muted);
  margin-bottom: 32px;
  line-height: 1.5;
}

.bg-art {
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

.snippet {
  position: absolute;
  font-family: 'JetBrains Mono', monospace;
  font-size: 14px;
  color: var(--text-muted);
  opacity: 0.15;
  white-space: pre;
  filter: blur(1px);
  user-select: none;
}

.snippet-1 { top: 10%; left: 5%; transform: rotate(-5deg); }
.snippet-2 { bottom: 15%; right: 5%; transform: rotate(3deg); font-size: 12px; }
.snippet-3 { top: 60%; left: 10%; opacity: 0.1; filter: blur(3px); }
.snippet-4 { top: 20%; right: 15%; opacity: 0.08; filter: blur(4px); font-size: 18px; }

@media (prefers-color-scheme: dark) {
  .snippet span.kw { color: #FF7B72; }
  .snippet span.str { color: #A5D6FF; }
  .snippet span.fn { color: #D2A8FF; }
}

@media (prefers-color-scheme: light) {
  .snippet { opacity: 0.25; }
  .snippet span.kw { color: #CF222E; }
  .snippet span.str { color: #0A3069; }
  .snippet span.fn { color: #8250DF; }
}

.wrap {
  width: 100%;
  max-width: 440px;
  position: relative;
  z-index: 10;
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 40px;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: 0 24px 48px rgba(0,0,0,0.2);
}

.header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 32px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--text-main);
  text-decoration: none;
  font-weight: 600;
  font-size: 18px;
}
.logo svg {
  height: 24px;
  width: auto;
}

.custom-lang {
  position: relative;
  font-size: 13px;
  font-weight: 500;
}
.lang-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  background: transparent;
  border: 1px solid var(--border-color);
  color: var(--text-main);
  padding: 6px 12px 6px 12px;
  border-radius: 6px;
  cursor: pointer;
  user-select: none;
}
.lang-btn::after {
  content: '';
  width: 14px;
  height: 14px;
  background-color: var(--text-main);
  -webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E") no-repeat center;
  mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E") no-repeat center;
}
.lang-btn img {
  width: 16px;
  height: 12px;
  object-fit: cover;
  border-radius: 2px;
}
.lang-dropdown {
  position: absolute;
  top: 100%;
  right: 0;
  margin-top: 4px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  overflow: hidden;
  display: none;
  min-width: 80px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.15);
  z-index: 100;
}
.lang-dropdown.show { display: block; }
.lang-option {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 12px;
  cursor: pointer;
  transition: background 0.1s;
}
.lang-option:hover {
  background: rgba(155, 82, 255, 0.1);
}
.lang-option img {
  width: 16px;
  height: 12px;
  object-fit: cover;
  border-radius: 2px;
}

.field { margin-bottom: 20px; }
.field__wrap { position: relative; }

.field__inp {
  width: 100%;
  height: 48px;
  padding: 0 16px;
  background: var(--input-bg);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  color: var(--text-main);
  font-size: 14px;
  font-weight: 500;
  outline: none;
  transition: all 0.2s;
  font-family: 'Inter', system-ui, sans-serif;
}
.field__inp:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(88, 166, 255, 0.3);
}
.field--err .field__inp {
  border-color: var(--err-color);
}

.field__eye {
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  display: flex;
  padding: 4px;
}
.field__eye:hover { color: var(--text-main); }

.field__errmsg {
  display: none;
  font-size: 12px;
  color: var(--err-color);
  margin-top: 6px;
}
.field--err .field__errmsg { display: block; }

.forgot {
  display: block;
  width: fit-content;
  margin-left: 0;
  font-size: 13px;
  color: var(--text-muted);
  margin-top: -8px;
  margin-bottom: 24px;
}
.forgot a {
  font-weight: 700;
  color: var(--text-main);
  text-decoration: underline;
  transition: color 0.2s;
}
.forgot a:hover { 
  text-decoration: none; 
  color: var(--accent);
}

.btn {
  width: 100%;
  height: 48px;
  background: var(--btn-bg);
  color: var(--btn-text);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 6px;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: -0.01em;
  cursor: pointer;
  transition: background 0.2s;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 8px;
}
.btn:hover { background: var(--btn-hover); }
.btn:disabled { opacity: 0.7; cursor: not-allowed; }

.alert {
  padding: 12px 16px;
  background: rgba(248, 81, 73, 0.1);
  border: 1px solid rgba(248, 81, 73, 0.4);
  border-radius: 6px;
  color: var(--err-color);
  font-size: 13px;
  margin-bottom: 24px;
}

.card__foot {
  text-align: center;
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 24px;
}

@keyframes spin {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}