:root {
  --bg: #0c0c0e;
  --surface: rgba(255,255,255,0.035);
  --surface-solid: #141416;
  --border: rgba(255,255,255,0.06);
  --border-hover: rgba(255,255,255,0.12);
  --accent: #c8f542;
  --accent-dim: rgba(200,245,66,0.12);
  --accent2: #42d9c5;
  --text: #ffffff;
  --text-secondary: rgba(255,255,255,0.88);
  --text-muted: rgba(255,255,255,0.5);
  --danger: #ff5c5c;
  --radius: 14px;
  --radius-sm: 8px;
  --font-display: 'Outfit', -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', 'SF Mono', monospace;
  --transition: cubic-bezier(0.22, 1, 0.36, 1);
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 18px; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-mono);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
}
body::before {
  content: '';
  position: fixed;
  top: -40%; left: -20%;
  width: 80vw; height: 80vw;
  background: radial-gradient(circle, rgba(200,245,66,0.04) 0%, transparent 70%);
  pointer-events: none;
  z-index: 0;
  animation: drift 20s ease-in-out infinite alternate;
}
@keyframes drift {
  0% { transform: translate(0, 0) scale(1); }
  100% { transform: translate(40px, -30px) scale(1.08); }
}

header {
  position: sticky; top: 0; z-index: 100;
  padding: 0 36px; height: 72px;
  display: flex; align-items: center; justify-content: space-between;
  background: rgba(12,12,14,0.8);
  backdrop-filter: blur(20px) saturate(1.2);
  border-bottom: 1px solid var(--border);
}
.logo {
  cursor: pointer; display: flex; align-items: center; gap: 8px;
  text-decoration: none;
}
.logo-badge {
  font-family: var(--font-mono); font-size: 0.85rem; font-weight: 500;
  color: var(--accent); background: var(--accent-dim);
  border: 1px solid rgba(200,245,66,0.2);
  padding: 5px 10px; border-radius: 6px;
  letter-spacing: 0.01em; transition: all 0.35s var(--transition);
}
.logo:hover .logo-badge { background: var(--accent); color: #0c0c0e; }
.logo-text {
  font-family: var(--font-display); font-weight: 700; font-size: 1.3rem;
  letter-spacing: -0.04em; color: var(--text); opacity: 0.85;
}
.header-right { display: flex; align-items: center; gap: 14px; }
.header-link { font-family: var(--font-mono); font-size: 0.78rem; color: var(--text-secondary); text-decoration: none; transition: color 0.2s; }
.header-link:hover { color: var(--accent);
}

.auth-container {
  flex: 1; display: flex; align-items: center; justify-content: center;
  padding: 40px 20px; position: relative; z-index: 1;
}
.auth-card {
  width: 100%; max-width: 420px;
  background: var(--surface-solid);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 40px 36px;
  box-shadow: 0 2px 24px rgba(0,0,0,0.25), 0 0 0 1px var(--border);
}
.auth-title {
  font-family: var(--font-display); font-weight: 700; font-size: 1.5rem;
  letter-spacing: -0.03em; margin-bottom: 6px;
}
.auth-subtitle {
  font-size: 0.72rem; color: var(--text-muted); margin-bottom: 28px;
  line-height: 1.5;
}
.auth-subtitle a { color: var(--accent); text-decoration: none; }
.auth-subtitle a:hover { text-decoration: underline; }

.form-group { margin-bottom: 18px; }
.form-label {
  display: block; font-size: 0.65rem; font-weight: 500;
  color: var(--text-secondary); margin-bottom: 6px;
  letter-spacing: 0.04em; text-transform: uppercase;
}
.form-input {
  width: 100%; padding: 12px 14px;
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius-sm); color: var(--text);
  font-family: var(--font-mono); font-size: 0.78rem;
  outline: none; transition: all 0.25s var(--transition);
}
.form-input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-dim);
}
.form-input::placeholder { color: var(--text-muted); }

.btn-primary {
  width: 100%; padding: 14px;
  background: var(--accent); color: #0c0c0e;
  border: none; border-radius: var(--radius-sm);
  font-family: var(--font-display); font-weight: 600; font-size: 0.88rem;
  cursor: pointer; transition: all 0.25s var(--transition);
  letter-spacing: -0.01em; margin-top: 8px;
}
.btn-primary:hover { box-shadow: 0 0 20px rgba(200,245,66,0.35); transform: translateY(-1px); }
.btn-primary:active { transform: translateY(0); }
.btn-primary:disabled { opacity: 0.5; cursor: not-allowed; transform: none; box-shadow: none; }

.divider {
  display: flex; align-items: center; gap: 14px;
  margin: 22px 0; color: var(--text-muted); font-size: 0.62rem;
  text-transform: uppercase; letter-spacing: 0.06em;
}
.divider::before, .divider::after {
  content: ''; flex: 1; height: 1px; background: var(--border);
}

.btn-oauth {
  width: 100%; padding: 12px;
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius-sm); color: var(--text);
  font-family: var(--font-mono); font-size: 0.75rem;
  cursor: pointer; transition: all 0.25s var(--transition);
  display: flex; align-items: center; justify-content: center; gap: 10px;
}
.btn-oauth:hover { border-color: var(--border-hover); background: rgba(255,255,255,0.06); }
.btn-oauth svg { width: 18px; height: 18px; }

.auth-footer {
  text-align: center; margin-top: 22px;
  font-size: 0.68rem; color: var(--text-muted);
}
.auth-footer a { color: var(--accent); text-decoration: none; }
.auth-footer a:hover { text-decoration: underline; }

.alert {
  padding: 12px 14px; border-radius: var(--radius-sm);
  font-size: 0.7rem; margin-bottom: 18px; display: none;
  line-height: 1.5;
}
.alert-error { background: rgba(255,92,92,0.1); border: 1px solid rgba(255,92,92,0.2); color: var(--danger); }
.alert-success { background: rgba(200,245,66,0.1); border: 1px solid rgba(200,245,66,0.2); color: var(--accent); }

.perks {
  margin-top: 24px; padding-top: 20px; border-top: 1px solid var(--border);
}
.perks-title { font-size: 0.62rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.06em; margin-bottom: 10px; }
.perk {
  display: flex; align-items: center; gap: 8px;
  font-size: 0.68rem; color: var(--text-secondary);
  margin-bottom: 6px;
}
.perk-icon { color: var(--accent); font-size: 0.8rem; }

.password-wrapper { position: relative; }
.password-toggle {
  position: absolute; right: 12px; top: 50%; transform: translateY(-50%);
  background: none; border: none; color: var(--text-muted); cursor: pointer;
  font-size: 0.72rem; padding: 4px;
}
.password-toggle:hover { color: var(--text); }