:root {
  --color-bg: #f5f7f5;
  --color-surface: #ffffff;
  --color-primary: #2f7a4f;
  --color-primary-dark: #235c3b;
  --color-text: #1f2a24;
  --color-muted: #5b6b62;
  --color-border: #d8e0dc;
  --color-danger: #c0392b;
  --radius: 10px;
  --shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.5;
}

.container {
  max-width: 960px;
  margin: 0 auto;
  padding: 1.5rem 1rem;
}

/* Logo */
.logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
  color: inherit;
}

.logo img {
  display: block;
}

.logo__wordmark {
  font-weight: 700;
  color: var(--color-primary-dark);
}

.logo--large {
  flex-direction: column;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
}

.logo--large .logo__wordmark {
  font-size: 1.5rem;
}

.logo--small .logo__wordmark {
  font-size: 1.1rem;
}

/* Site header / nav (authenticated pages) */
.site-header {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
}

.site-nav {
  max-width: 960px;
  margin: 0 auto;
  padding: 0.75rem 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.site-nav__links {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.site-nav__links a {
  color: var(--color-text);
  text-decoration: none;
  font-size: 0.95rem;
}

.site-nav__links a:hover {
  color: var(--color-primary);
}

.site-nav__logout {
  margin: 0;
  display: inline-flex;
  align-items: center;
}

form.site-nav__logout button[type="submit"] {
  background: none;
  border: none;
  padding: 0;
  color: var(--color-text);
  text-decoration: none;
  font-size: 0.95rem;
  font-family: inherit;
  cursor: pointer;
}

form.site-nav__logout button[type="submit"]:hover {
  color: var(--color-primary);
}

/* Auth page (login) */
.auth-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}

.auth-card {
  background: var(--color-surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 2.5rem 2rem;
  width: 100%;
  max-width: 380px;
  text-align: center;
}

.auth-card h1 {
  font-size: 1.25rem;
  margin: 0 0 1.5rem;
}

.auth-card form {
  text-align: left;
}

/* Forms */
form p {
  margin: 0 0 1rem;
}

label {
  display: block;
  font-size: 0.9rem;
  color: var(--color-muted);
  margin-bottom: 0.3rem;
}

input[type="text"],
input[type="email"],
input[type="password"],
input[type="date"],
input[type="number"] {
  width: 100%;
  padding: 0.6rem 0.75rem;
  border: 1px solid var(--color-border);
  border-radius: 6px;
  font-size: 1rem;
}

input:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: 1px;
}

button[type="submit"] {
  background: var(--color-primary);
  color: #fff;
  border: none;
  border-radius: 6px;
  padding: 0.65rem 1.5rem;
  font-size: 1rem;
  cursor: pointer;
}

button[type="submit"]:hover {
  background: var(--color-primary-dark);
}

/* Cards / lists */
.card {
  background: var(--color-surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.5rem;
  margin-bottom: 1.5rem;
}

ul.batch-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

ul.batch-list li {
  padding: 0.6rem 0;
  border-bottom: 1px solid var(--color-border);
}

.error {
  color: var(--color-danger);
  background: #fbeceb;
  border: 1px solid #f1c3bf;
  border-radius: 6px;
  padding: 0.6rem 0.9rem;
  margin-bottom: 1rem;
}

/* Responsive */
@media (max-width: 640px) {
  .site-nav {
    flex-direction: column;
    align-items: flex-start;
  }

  .auth-card {
    padding: 2rem 1.25rem;
  }
}