html, body {
  margin: 0;
  padding: 0;
}

*, *::before, *::after {
  box-sizing: border-box;
}

html {
  font-size: 14px;
}

@media (min-width: 768px) {
  html {
    font-size: 16px;
  }
}

.btn:focus, .btn:active:focus, .btn-link.nav-link:focus, .form-control:focus, .form-check-input:focus {
  box-shadow: 0 0 0 0.1rem white, 0 0 0 0.25rem #258cfb;
}

html {
  position: relative;
  min-height: 100%;
}

body {
  background: #f8fafc;
  color: #0f172a;
  font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  min-width: 0;
  overflow-x: hidden;
}

.signal-login-shell {
  min-height: 100vh;
  min-height: 100svh;
  width: 100%;
  display: grid;
  place-items: center;
  padding: 1rem;
  background: radial-gradient(circle at 15% 15%, rgba(0,210,255,.12), transparent 32%), radial-gradient(circle at 90% 85%, rgba(0,102,255,.14), transparent 35%), #0a0f24;
}

.signal-login-card {
  width: min(100%, 440px);
  padding: clamp(1.25rem, 6vw, 2.75rem);
  border: 1px solid rgba(148,163,184,.22);
  border-radius: clamp(.85rem, 3vw, 1rem);
  background: rgba(15,23,42,.9);
  box-shadow: 0 24px 70px rgba(0,0,0,.35);
  color: #f8fafc;
}

.signal-logo { display: block; width: min(100%, 250px); height: auto; margin: 0 auto; }
.signal-eyebrow { color: #64748b; font: 700 .68rem/1.2 "JetBrains Mono", monospace; letter-spacing: .16em; margin: 2rem 0 .7rem; }
.signal-login-card h1 { margin: 0; font: 800 2.2rem/1.15 "Plus Jakarta Sans", system-ui, sans-serif; letter-spacing: -.05em; overflow-wrap: anywhere; }
.signal-lead { color: #94a3b8; margin: .65rem 0 2rem; line-height: 1.5; }
.signal-login-form label { display: block; margin: 1rem 0 .45rem; color: #cbd5e1; font-size: .84rem; font-weight: 600; }
.signal-login-form input[type="email"], .signal-login-form input[type="password"], .signal-login-form input[type="text"] { width: 100%; min-height: 3.1rem; padding: .85rem 1rem; border: 1px solid #334155; border-radius: 8px; background: #0f172a; color: #f8fafc; font: inherit; }
.signal-login-form input[type="email"]:focus, .signal-login-form input[type="password"]:focus, .signal-login-form input[type="text"]:focus { outline: 2px solid #00d2ff; outline-offset: 1px; border-color: #00d2ff; }
.signal-form-row { display: flex; align-items: center; justify-content: space-between; gap: .75rem; margin: 1rem 0 1.35rem; }
.signal-check { display: flex !important; align-items: center; gap: .6rem; min-height: 2.75rem; margin: 0 !important; color: #94a3b8 !important; font-weight: 400 !important; }
.signal-check input[type="checkbox"] { appearance: none; width: 1.25rem; height: 1.25rem; flex: 0 0 1.25rem; margin: 0; border: 1px solid #475569; border-radius: 5px; background: #0f172a; accent-color: #0066ff; cursor: pointer; }
.signal-check input[type="checkbox"]:checked { border-color: #00a9e8; background: linear-gradient(135deg, #0066ff, #00a9e8); box-shadow: inset 0 0 0 3px #0f172a; }
.signal-check input[type="checkbox"]:focus-visible { outline: 2px solid #00d2ff; outline-offset: 2px; }
.signal-link { color: #00d2ff; text-decoration: none; }
.signal-link:hover { color: #fff; text-decoration: underline; }
.signal-submit { width: 100%; min-height: 3.25rem; padding: .9rem 1rem; border: 0; border-radius: 8px; background: linear-gradient(100deg, #0066ff, #00a9e8); color: #fff; font: 700 1rem "Plus Jakarta Sans", system-ui, sans-serif; cursor: pointer; box-shadow: 0 8px 22px rgba(0,102,255,.28); }
.signal-submit span { margin-left: .45rem; font-size: 1.2rem; }
.signal-register { margin: 1.6rem 0 0; color: #94a3b8; text-align: center; font-size: .9rem; line-height: 1.5; }
.signal-footer { margin: 2.2rem 0 0; color: #475569; text-align: center; font-size: .72rem; line-height: 1.5; }
.signal-validation { color: #ff8c70; font-size: .8rem; margin-top: .35rem; }

@media (max-width: 480px) {
  .signal-login-shell {
    align-items: start;
    padding: .75rem;
  }

  .signal-login-card {
    width: 100%;
    padding: 1.25rem 1rem 1.5rem;
  }

  .signal-logo { width: min(100%, 190px); }
  .signal-eyebrow { margin-top: 1.4rem; font-size: .6rem; letter-spacing: .12em; }
  .signal-login-card h1 { font-size: clamp(1.8rem, 9vw, 2.2rem); }
  .signal-lead { margin-bottom: 1.35rem; font-size: .95rem; }
  .signal-login-form label { font-size: .88rem; }
  .signal-login-form input[type="email"], .signal-login-form input[type="password"], .signal-login-form input[type="text"] { min-height: 3.25rem; font-size: 16px; }
  .signal-form-row { margin: .9rem 0 1.15rem; }
  .signal-register { margin-top: 1.35rem; }
  .signal-footer { margin-top: 1.75rem; }
}

.form-floating > .form-control-plaintext::placeholder, .form-floating > .form-control::placeholder {
  color: var(--bs-secondary-color);
  text-align: end;
}

.form-floating > .form-control-plaintext:focus::placeholder, .form-floating > .form-control:focus::placeholder {
  text-align: start;
}