/* The sign-in screen — v19 §6.
   Mobile-first on purpose: §11 says traffic is overwhelmingly phones arriving
   from YouTube, so this is designed at 375px and allowed to grow, rather than
   designed wide and squeezed. */

.signin{min-height:100dvh;display:flex;flex-direction:column;align-items:center;
  justify-content:center;gap:18px;padding:24px 18px calc(24px + env(safe-area-inset-bottom));
  background:var(--bg)}

.signin-card{width:100%;max-width:400px;background:var(--card);border:1px solid var(--border);
  border-radius:16px;padding:28px 24px;box-shadow:var(--shadow)}

.signin-brand{font-family:var(--serif);font-size:26px;line-height:1.2;color:var(--heading);
  margin:0 0 6px;text-align:center}
.signin-brand .tm{font-size:11px;vertical-align:super;color:var(--muted)}
.signin-sub{font-family:var(--ui);font-size:14px;color:var(--muted);text-align:center;
  margin:0 0 22px}

.google-slot{margin-bottom:4px}
#google-button{display:flex;justify-content:center;min-height:44px}
.or{display:flex;align-items:center;gap:12px;margin:18px 0;
  font-family:var(--ui);font-size:12px;color:var(--faint)}
.or::before,.or::after{content:"";flex:1;height:1px;background:var(--border)}

.field{display:block;margin-bottom:14px}
.field>span{display:block;font-family:var(--mono);font-size:10.5px;letter-spacing:.12em;
  text-transform:uppercase;color:var(--muted);margin-bottom:6px}
.field input{width:100%;box-sizing:border-box;font-family:var(--ui);
  /* 16px minimum: anything smaller makes iOS Safari zoom the page on focus,
     which throws the layout off centre and cannot be undone by the user. */
  font-size:16px;color:var(--text);background:var(--bg);
  border:1px solid var(--border);border-radius:10px;padding:12px 13px}
.field input:focus{outline:none;border-color:var(--accent)}

/* A code is read off another screen and typed. Wide, spaced digits make it
   possible to check what you typed against what you are reading. */
#code{letter-spacing:.5em;font-family:var(--mono);text-align:center;font-size:20px}

.signin-go{width:100%;padding:13px;font-size:15px;border-radius:10px;margin-top:4px}
.btn.pri{background:var(--accent);color:var(--on-accent);border:1px solid var(--accent);
  font-family:var(--ui);font-weight:600}
.btn.pri:hover{background:var(--orange2);border-color:var(--orange2)}
.btn.pri:disabled{opacity:.55}

.signin-note{font-family:var(--ui);font-size:13px;line-height:1.5;margin:0 0 14px;
  padding:11px 13px;border-radius:10px;border:1px solid var(--border);color:var(--text)}
.signin-note.bad{border-color:var(--orange);color:var(--heading)}
.signin-note.good{border-color:var(--prose)}

.note-action{margin-top:7px;color:var(--accent);font-size:13px}

.signin-links{display:flex;justify-content:space-between;gap:12px;margin-top:18px}
.linkish{background:none;border:0;padding:4px 0;font-family:var(--ui);font-size:13px;
  color:var(--muted);text-decoration:underline;text-underline-offset:3px;cursor:pointer}
.linkish:hover{color:var(--accent)}

.signin-foot{font-family:var(--ui);font-size:12.5px;color:var(--faint);text-align:center;
  max-width:400px;margin:0}

@media (max-width:400px){
  .signin{padding:16px 12px}
  .signin-card{padding:24px 18px;border-radius:14px}
}