:root {
  --bg: #0d0f12;
  --surface: #13161b;
  --border: #1e2330;
  --accent: #4ade80;
  --accent-dim: #1a3d2a;
  --accent-glow: rgba(74, 222, 128, 0.08);
  --text: #e2e8f0;
  --text-muted: #4a5568;
  --text-dim: #718096;
  --error: #f87171;
  --mono: 'JetBrains Mono', monospace;
  --sans: 'Syne', sans-serif;
}

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

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--mono);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  position: relative;
}

body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(74,222,128,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(74,222,128,0.03) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
}

body::after {
  content: '';
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(74,222,128,0.04) 0%, transparent 70%);
  pointer-events: none;
}

.top-bar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  padding: 12px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--border);
  background: rgba(13,15,18,0.8);
  backdrop-filter: blur(10px);
  z-index: 10;
}

.top-bar-left {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  color: var(--text-muted);
}

.top-bar-left .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}

.top-bar-right {
  font-size: 11px;
  color: var(--text-muted);
  letter-spacing: 0.05em;
}

.container {
  width: 100%;
  max-width: 420px;
  padding: 24px;
  position: relative;
  z-index: 1;
  animation: fadeIn 0.6s ease both;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}

.logo-wrap {
  text-align: center;
  margin-bottom: 36px;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--sans);
  font-size: 22px;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.02em;
}

.logo svg { color: var(--accent); }

.logo-sub {
  margin-top: 6px;
  font-size: 11px;
  color: var(--text-muted);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 32px;
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  opacity: 0.4;
}

.card-header { margin-bottom: 28px; }

.card-title {
  font-family: var(--sans);
  font-size: 17px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 6px;
}

.card-desc {
  font-size: 12px;
  color: var(--text-muted);
  line-height: 1.6;
}

.field { margin-bottom: 16px; }

.field label {
  display: block;
  font-size: 11px;
  color: var(--text-dim);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 8px;
}

.input-wrap { position: relative; }

.input-wrap svg {
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  pointer-events: none;
}

input[type="email"],
input[type="password"] {
  width: 100%;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 11px 12px 11px 38px;
  font-family: var(--mono);
  font-size: 13px;
  color: var(--text);
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}

input[type="email"]::placeholder,
input[type="password"]::placeholder { color: var(--text-muted); }

input[type="email"]:focus,
input[type="password"]:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

.remember-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
  font-size: 12px;
}

.remember-row label {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text-dim);
  cursor: pointer;
}

.remember-row input[type=checkbox] {
  width: 14px;
  height: 14px;
  accent-color: var(--accent);
}

.forgot {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 12px;
  transition: color 0.2s;
}
.forgot:hover { color: var(--accent); }

.btn {
  width: 100%;
  background: var(--accent);
  color: #0a1a0f;
  border: none;
  border-radius: 8px;
  padding: 12px;
  font-family: var(--sans);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: opacity 0.2s, transform 0.1s;
  letter-spacing: 0.02em;
}

.btn:hover { opacity: 0.9; }
.btn:active { transform: scale(0.99); }
.btn.loading { pointer-events: none; opacity: 0.7; }

.divider {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 24px 0;
  font-size: 11px;
  color: var(--text-muted);
}

.divider::before,
.divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border);
}

.notice {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  background: var(--accent-dim);
  border: 1px solid rgba(74,222,128,0.15);
  border-radius: 8px;
  padding: 12px 14px;
  font-size: 11px;
  color: #6ee7a0;
  line-height: 1.6;
}

.notice svg { flex-shrink: 0; margin-top: 1px; }

.error-msg {
  display: none;
  align-items: center;
  gap: 8px;
  background: rgba(248,113,113,0.08);
  border: 1px solid rgba(248,113,113,0.2);
  border-radius: 8px;
  padding: 10px 14px;
  font-size: 12px;
  color: var(--error);
  margin-bottom: 16px;
}

.error-msg.show { display: flex; }

.footer {
  text-align: center;
  margin-top: 28px;
  font-size: 11px;
  color: var(--text-muted);
  line-height: 1.8;
}

.footer a { color: var(--text-dim); text-decoration: none; }
.footer a:hover { color: var(--accent); }

.version-badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  background: var(--border);
  border-radius: 4px;
  padding: 2px 8px;
  font-size: 10px;
  color: var(--text-muted);
  margin-top: 8px;
}