:root {
  --color-bg: #0e0e10;
  --color-card: #1c1c1f;
  --color-text: #f5f5f5;
  --color-accent: #37b1a0;
  --color-accent-2: #2f9d90;
  --color-danger: #ef4444;
  --font: 'Segoe UI','Roboto',sans-serif;
}

html, body {
  height: 100%;
}

body {
  margin: 0;
  font-family: var(--font);
  color: var(--color-text);
  background: url("../img/pestana-viking.jpg") center/cover no-repeat fixed;
  position: relative;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  background-color: rgba(0,0,0,.5);
  z-index: 0;
}

main {
  min-height: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
  z-index: 1;
  padding: 2rem 1rem;
}

.login-container {
  background-color: rgba(28,28,31,.9);
  padding: 2.5rem 2rem;
  border-radius: 1rem;
  box-shadow: 0 4px 15px rgba(0,0,0,.6);
  width: 90%;
  max-width: 400px;
}

.login-container h2 {
  margin: 0 0 1.5rem;
  text-align: center;
  font-size: 1.8rem;
}

.form-group { margin-bottom: 1.1rem; }
.form-group label { display: block; margin-bottom: .5rem; font-size: .95rem; }
.form-group input {
  width: 100%;
  padding: .6rem .7rem;
  border-radius: 8px;
  border: none;
  background-color: #2a2a2d;
  color: #fff;
  font-size: 1rem;
}
.form-group input:focus { outline: 2px solid var(--color-accent); }

.form-inline { display: flex; align-items: center; gap: .5rem; margin-bottom: 1rem; }

button {
  width: 100%;
  padding: .8rem;
  font-size: 1rem;
  background-color: var(--color-accent);
  color: #fff;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  transition: background-color .15s ease, opacity .15s ease;
}
button:hover { background-color: var(--color-accent-2); }
button[disabled] { opacity: .75; cursor: progress; }

.footer { margin-top: 1.2rem; text-align: center; font-size: .85rem; color: #ccc; }

.error {
  margin-bottom: 1rem;
  background: rgba(239,68,68,.12);
  color: #ffd6d6;
  border: 1px solid rgba(239,68,68,.35);
  padding: .6rem .75rem;
  border-radius: 8px;
  font-size: .95rem;
}


.offline { display: none; margin-top: .75rem; text-align: center; font-size: .85rem; opacity: .8; }
body[data-offline="1"] .offline { display: block; }