:root {
  --bg: #f2f5f4;
  --card: #ffffff;
  --tx: #1f2a2e;
  --mut: #6b7c80;
  --bd: #e2e8e6;
  --pri: #2f6f5e;
  --pri2: #e6f2ee;
  --er: #b13b30;
  --erb: #fbe7e4;
  --shadow: 0 1px 2px rgba(15, 40, 35, .04), 0 8px 24px rgba(15, 40, 35, .06);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--tx);
  font: 14px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.login-container {
  width: 100%;
  max-width: 380px;
}

.login-card {
  background: var(--card);
  border: 1px solid var(--bd);
  border-radius: 14px;
  padding: 32px 28px;
  box-shadow: var(--shadow);
}

.login-brand {
  text-align: center;
  margin-bottom: 24px;
}

.login-logo {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--pri), #7ec7b0);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 24px;
  margin: 0 auto 12px;
}

.login-brand h1 {
  margin: 0 0 4px;
  font-size: 20px;
  color: var(--pri);
}

.login-brand p {
  margin: 0;
  font-size: 12px;
  color: var(--mut);
}

#login-form label {
  display: block;
  font-size: 12px;
  color: var(--mut);
  margin-bottom: 4px;
  font-weight: 500;
}

#login-form input {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--bd);
  border-radius: 9px;
  font: inherit;
  margin-bottom: 14px;
  background: var(--card);
  color: var(--tx);
  transition: border-color .15s;
}

#login-form input:focus {
  outline: none;
  border-color: var(--pri);
}

#login-btn {
  width: 100%;
  padding: 11px;
  background: var(--pri);
  color: #fff;
  border: 0;
  border-radius: 9px;
  font: inherit;
  font-weight: 600;
  cursor: pointer;
  transition: filter .15s;
}

#login-btn:hover { filter: brightness(1.06); }
#login-btn:disabled { opacity: .6; cursor: not-allowed; }

.login-error {
  margin-top: 12px;
  padding: 9px 12px;
  background: var(--erb);
  color: var(--er);
  border-radius: 8px;
  font-size: 13px;
  display: none;
}

.login-error.show { display: block; }

.login-loading {
  margin-top: 12px;
  text-align: center;
  color: var(--mut);
  font-size: 13px;
}