/* Login / registration (server mode) */
html, body { min-height: 100%; margin: 0; background: var(--tnx-bg); color: var(--tnx-fg); font-family: var(--tnx-font); }
.lg { box-sizing: border-box; min-height: 100vh; display: flex; flex-direction: column; align-items: center; justify-content: center; padding: 24px 16px; gap: 18px; }
.lg__brand { display: flex; align-items: center; gap: 12px; }
.lg__brand h1 { margin: 0; font-size: 22px; font-weight: 700; }
.lg__card {
  box-sizing: border-box; width: 100%; max-width: 360px; display: grid; gap: 12px; padding: 20px;
  background: var(--tnx-bg-2); border: 1px solid var(--tnx-border); border-radius: 10px; box-shadow: var(--tnx-shadow);
}
.lg__tabs { display: grid; grid-template-columns: 1fr 1fr; gap: 4px; padding: 3px; border-radius: 7px; background: var(--tnx-bg); border: 1px solid var(--tnx-border); }
.lg__tab { height: 32px; border: 0; border-radius: 5px; background: transparent; color: var(--tnx-fg-dim); font: 600 13px var(--tnx-font); cursor: pointer; }
.lg__tab--on { background: var(--tnx-blue-btn); color: #fff; }
.lg__field { display: grid; gap: 5px; font-size: 13px; color: var(--tnx-fg-dim); }
.lg__field input {
  box-sizing: border-box; width: 100%; height: 40px; padding: 0 10px; font: 15px var(--tnx-font); color: var(--tnx-fg);
  background: var(--tnx-input-bg); border: 1px solid var(--tnx-border); border-radius: 6px;
}
.lg__field input:focus { outline: 2px solid var(--tnx-blue-btn); outline-offset: -1px; }
.lg__opt { font-size: 11px; }
.lg__reg { display: none; }
.lg--register .lg__reg { display: grid; }
.lg--register p.lg__reg { display: block; }
.lg__error { margin: 0; min-height: 1em; color: var(--tnx-neg); font-size: 13px; }
.lg__error:empty { display: none; }
.lg__submit { height: 42px; border: 0; border-radius: 6px; background: var(--tnx-blue-btn); color: #fff; font: 700 15px var(--tnx-font); cursor: pointer; }
.lg__submit:disabled { opacity: 0.6; cursor: default; }
.lg__hint { margin: 0; font-size: 12px; color: var(--tnx-fg-dim); line-height: 1.4; }