* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, sans-serif;
  line-height: 1.6;
  color: #1a1a1a;
  background: #fff;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
}

main.under-construction {
  max-width: 56rem;
  width: 100%;
  text-align: center;
}

main .construction-img {
  max-width: 100%;
  height: auto;
  display: block;
  margin: 0 auto;
}

main {
  max-width: 42rem;
  text-align: center;
}

h1 {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.tagline {
  font-size: 1.25rem;
  color: #555;
  margin-bottom: 1.5rem;
}

p {
  margin: 0.5rem 0;
  color: #444;
}

/* Developer login button (fixed corner) */
.dev-btn {
  position: fixed;
  bottom: 1.25rem;
  right: 1.25rem;
  padding: 0.6rem 1rem;
  font-size: 0.95rem;
  font-weight: 500;
  color: #fff;
  background: #333;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  text-decoration: none;
  z-index: 9999;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.25);
}
.dev-btn:hover {
  background: #000;
  color: #fff;
}
.dev-btn--open {
  background: #0a6b0a;
  color: #fff;
}
.dev-btn--open:hover {
  background: #085008;
  color: #fff;
}

/* Developer login link below main image (always visible) */
.dev-link-wrap {
  margin-top: 1.5rem !important;
}
.dev-link, .dev-link-btn {
  font-size: 1rem;
  color: #333;
  background: transparent;
  border: none;
  text-decoration: underline;
  cursor: pointer;
  padding: 0;
}
.dev-link:hover, .dev-link-btn:hover {
  color: #000;
}
.dev-link-visible {
  display: inline-block;
  margin-top: 0.5rem;
  padding: 0.5rem 1rem;
  font-size: 1.1rem;
  color: #fff !important;
  background: #333;
  text-decoration: none !important;
  border-radius: 6px;
}
.dev-link-visible:hover {
  background: #000;
  color: #fff !important;
}

/* Login page */
.login-page .login-main {
  max-width: 320px;
  margin: 3rem auto;
  padding: 2rem;
  text-align: center;
}
.login-page .login-main h1 {
  margin-bottom: 1.5rem;
  font-size: 1.5rem;
}
.login-page .dev-login-form {
  text-align: left;
  margin-bottom: 1.5rem;
}

/* Developer login modal */
.dev-modal {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}
.dev-modal[hidden] {
  display: none;
}
.dev-modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.4);
}
.dev-modal-box {
  position: relative;
  background: #fff;
  border-radius: 10px;
  padding: 1.5rem 2rem;
  min-width: 280px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
}
.dev-modal-title {
  margin: 0 0 1rem;
  font-size: 1.25rem;
}
.dev-login-form label {
  display: block;
  margin-bottom: 0.25rem;
  font-size: 0.9rem;
  color: #555;
}
.dev-login-form input {
  width: 100%;
  padding: 0.5rem;
  margin-bottom: 1rem;
  border: 1px solid #ccc;
  border-radius: 6px;
  font-size: 1rem;
  box-sizing: border-box;
}
.dev-login-form button {
  padding: 0.5rem 1rem;
  background: #333;
  color: #fff;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  font-size: 1rem;
}
.dev-login-form button:hover {
  background: #000;
}
.dev-modal-close {
  position: absolute;
  top: 0.5rem;
  right: 0.75rem;
  background: none;
  border: none;
  font-size: 1.5rem;
  color: #999;
  cursor: pointer;
  line-height: 1;
  padding: 0;
}
.dev-modal-close:hover {
  color: #333;
}

/* Developer page */
.developer-page .developer-main {
  max-width: 36rem;
  margin: 2rem auto;
  padding: 0 1rem;
}
.developer-page .developer-main h1 {
  margin-bottom: 0.5rem;
}
.developer-page .developer-main a {
  color: #06c;
}
.developer-page .dev-logout {
  color: #c00;
}