:root {
  --brand: #15803d;
  --brand-hover: #166534;
  --bg: #f8fafc;
  --fg: #0f172a;
  --muted: #64748b;
}

* { box-sizing: border-box; }

[hidden] { display: none !important; }

html, body {
  margin: 0;
  padding: 0;
  height: 100%;
  background: var(--bg);
  color: var(--fg);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

.lang-switcher {
  position: absolute;
  top: 16px;
  right: 16px;
  display: flex;
  gap: 4px;
}

.lang-switcher button {
  background: transparent;
  border: 1px solid transparent;
  color: var(--muted);
  font-size: 14px;
  padding: 4px 10px;
  border-radius: 6px;
  cursor: pointer;
}

.lang-switcher button.active {
  border-color: var(--brand);
  color: var(--brand);
}

.splash {
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 24px;
  text-align: center;
  gap: 24px;
}

.logo {
  width: 120px;
  height: 120px;
  object-fit: contain;
}

h1 {
  margin: 0;
  font-size: clamp(36px, 6vw, 56px);
  color: var(--brand);
  letter-spacing: -0.02em;
}

.tagline {
  margin: 0;
  font-size: clamp(16px, 2vw, 20px);
  color: var(--muted);
  max-width: 480px;
}

.btn-login {
  display: inline-block;
  background: var(--brand);
  color: #fff;
  text-decoration: none;
  font-size: 16px;
  font-weight: 600;
  padding: 12px 32px;
  border-radius: 8px;
  transition: background 0.15s;
}

.btn-login:hover {
  background: var(--brand-hover);
}