:root {
  --bg-primary: #0a0a0a;
  --bg-secondary: #111111;
  --bg-card: #1a1a1a;
  --border: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.16);
  --text-primary: #f5f5f5;
  --text-secondary: #a0a0a0;
  --accent: #22c55e;
  --accent-hover: #16a34a;
  --danger: #ef4444;
}

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

html, body {
  background: var(--bg-primary);
  color: var(--text-primary);
  font-family: 'Inter', -apple-system, sans-serif;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

body {
  background: radial-gradient(ellipse at top, rgba(34, 197, 94, 0.08), transparent 60%), var(--bg-primary);
}

.login-wrap {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 32px 20px;
}

.brand {
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--text-primary);
  text-decoration: none;
  margin-bottom: 32px;
  letter-spacing: -0.02em;
}

.brand:hover { color: var(--accent); }

.login-card {
  width: 100%;
  max-width: 420px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 40px 32px;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.4);
}

.login-card h1 {
  font-size: 1.6rem;
  font-weight: 700;
  margin-bottom: 8px;
  letter-spacing: -0.02em;
}

.sub {
  color: var(--text-secondary);
  font-size: 0.92rem;
  margin-bottom: 24px;
}

.lang-switch {
  display: flex;
  gap: 4px;
  margin-bottom: 24px;
  background: var(--bg-secondary);
  padding: 4px;
  border-radius: 8px;
  width: fit-content;
}

.lang-switch button {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  padding: 6px 12px;
  font-size: 0.78rem;
  font-weight: 600;
  cursor: pointer;
  border-radius: 6px;
  font-family: inherit;
  transition: all 0.2s;
}

.lang-switch button.active {
  background: var(--bg-card);
  color: var(--accent);
}

form { display: flex; flex-direction: column; gap: 6px; }

label {
  font-size: 0.82rem;
  color: var(--text-secondary);
  font-weight: 500;
  margin-top: 12px;
  margin-bottom: 4px;
}

input {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  color: var(--text-primary);
  padding: 12px 14px;
  border-radius: 10px;
  font-size: 0.95rem;
  font-family: inherit;
  transition: border-color 0.2s, background 0.2s;
}

input:focus {
  outline: none;
  border-color: var(--accent);
  background: #181818;
}

.btn-primary {
  margin-top: 24px;
  background: var(--accent);
  color: #052e16;
  border: none;
  padding: 13px 20px;
  border-radius: 10px;
  font-size: 0.95rem;
  font-weight: 700;
  cursor: pointer;
  font-family: inherit;
  transition: background 0.2s, transform 0.1s;
}

.btn-primary:hover { background: var(--accent-hover); }
.btn-primary:active { transform: translateY(1px); }
.btn-primary:disabled { opacity: 0.6; cursor: not-allowed; }

.msg {
  margin-top: 16px;
  padding: 0;
  font-size: 0.88rem;
  border-radius: 8px;
  display: none;
}

.msg.show { display: block; padding: 12px 14px; }
.msg.error { background: rgba(239, 68, 68, 0.1); border: 1px solid rgba(239, 68, 68, 0.3); color: #fca5a5; }
.msg.success { background: rgba(34, 197, 94, 0.1); border: 1px solid rgba(34, 197, 94, 0.3); color: #86efac; }

.links {
  margin-top: 20px;
  text-align: center;
}

.links a {
  color: var(--text-secondary);
  font-size: 0.85rem;
  text-decoration: none;
}

.links a:hover { color: var(--accent); }

.back-home {
  margin-top: 24px;
  font-size: 0.85rem;
}

.back-home a {
  color: var(--text-secondary);
  text-decoration: none;
}

.back-home a:hover { color: var(--text-primary); }