.auth-page {
  min-height: 100vh;
  overflow-x: hidden;
}

.auth-shell {
  width: min(1180px, calc(100% - 48px));
  min-height: 100vh;
  margin: 0 auto;
  padding: 42px 0;
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(340px, .65fr);
  align-items: stretch;
  gap: clamp(32px, 7vw, 100px);
}

.auth-intro {
  min-height: calc(100vh - 84px);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 4px 0 42px;
}

.auth-brand { width: max-content; }
.auth-title { font-size: clamp(64px, 8.5vw, 126px); }
.auth-lead { max-width: 650px; margin: 28px 0 0; color: var(--muted); font-size: clamp(16px, 1.5vw, 20px); line-height: 1.55; }

.auth-card {
  align-self: center;
  padding: clamp(26px, 4vw, 42px);
  border: 1px solid var(--line);
  border-radius: 46% 46% var(--radius-xl) var(--radius-xl);
  background: radial-gradient(circle at 50% 0%, rgba(184,42,49,.18), transparent 45%), var(--panel);
  box-shadow: var(--shadow);
}

.auth-card h2 { margin: 42px 0 10px; font-family: Georgia, "Times New Roman", serif; font-size: 48px; font-weight: 500; letter-spacing: -.045em; }
.auth-card > p { margin: 0 0 24px; color: var(--muted); font-size: 13px; line-height: 1.55; }
.auth-form { display: grid; gap: 15px; }
.auth-form label { display: grid; gap: 7px; }
.auth-form label > span:first-child, .auth-form legend { color: var(--muted); font-size: 10px; font-weight: 700; letter-spacing: .11em; text-transform: uppercase; }
.auth-form input {
  width: 100%;
  min-height: 48px;
  padding: 11px 13px;
  border: 1px solid var(--line);
  border-radius: 12px;
  outline: 0;
  background: var(--bg-soft);
  color: var(--cream);
  color-scheme: dark;
}
.auth-form input:focus { border-color: rgba(216,58,66,.72); box-shadow: 0 0 0 3px rgba(184,42,49,.12); }
.password-field { position: relative; display: block; }
.password-field input { padding-right: 82px; }
.password-toggle { position: absolute; inset: 0 9px 0 auto; border: 0; background: none; color: var(--muted); cursor: pointer; font-size: 11px; }
.auth-submit { width: 100%; margin-top: 8px; border-radius: 12px; }
.auth-submit:disabled { opacity: .65; cursor: wait; }
.auth-footnote { display: block; margin-top: 20px; color: #77726b; font-size: 10px; line-height: 1.5; }
.auth-error, .auth-notice { padding: 11px 12px; border: 1px solid rgba(216,58,66,.4); border-radius: 10px; background: rgba(184,42,49,.1); color: #f3c6c8; font-size: 12px; line-height: 1.45; }
.auth-notice.success { margin-bottom: 15px; border-color: rgba(113,141,119,.5); background: rgba(113,141,119,.12); color: #cfdfd2; }

.app-loading {
  position: fixed;
  inset: 0;
  z-index: 500;
  display: grid;
  place-content: center;
  justify-items: center;
  gap: 10px;
  background: var(--bg);
  transition: opacity .22s ease, visibility .22s ease;
}
.app-loading .brand-symbol { margin-bottom: 8px; }
.app-loading strong { font-size: 18px; }
.app-loading small { color: var(--muted); }
.app-ready .app-loading { opacity: 0; visibility: hidden; pointer-events: none; }
.app-load-failed .app-loading { padding: 24px; text-align: center; }
.app-load-failed .app-loading small { max-width: 430px; line-height: 1.55; color: #f3c6c8; }

.topbar-right { display: flex; align-items: flex-end; gap: 12px; }
.account-panel { min-height: 35px; display: flex; align-items: center; gap: 8px; padding: 4px 5px 4px 11px; border: 1px solid var(--line); border-radius: 12px; background: var(--panel); }
.account-copy { min-width: 76px; display: grid; gap: 1px; }
.account-copy strong { font-size: 12px; }
.account-copy small { color: var(--muted); font-size: 9px; }
.sync-state { min-width: 74px; color: var(--muted); font-size: 9px; text-align: right; }
.sync-state[data-state="saved"] { color: #96b49b; }
.sync-state[data-state="error"], .sync-state[data-state="conflict"] { color: #e3767c; }
.account-action { min-height: 27px; padding: 5px 7px; border: 0; border-radius: 8px; background: rgba(255,255,255,.04); color: var(--muted); cursor: pointer; font-size: 11px; }
.account-action:hover { color: var(--cream); background: rgba(255,255,255,.08); }
.logout-action { padding-inline: 9px; }

.readonly-banner, .sync-conflict { margin-top: 15px; padding: 12px 14px; display: flex; align-items: center; justify-content: space-between; gap: 16px; border-radius: 12px; }
.readonly-banner[hidden], .sync-conflict[hidden] { display: none; }
.readonly-banner { border: 1px solid rgba(119,143,178,.38); background: rgba(119,143,178,.09); }
.readonly-banner span { color: #c7d4e8; font-size: 10px; font-weight: 800; letter-spacing: .1em; text-transform: uppercase; }
.readonly-banner p { margin: 0; color: var(--muted); font-size: 11px; }
.sync-conflict { border: 1px solid rgba(216,58,66,.45); background: rgba(184,42,49,.1); }
.sync-conflict > div { display: grid; gap: 3px; }
.sync-conflict strong { font-size: 12px; }
.sync-conflict span { color: var(--muted); font-size: 11px; }

.read-only [data-write-control], .read-only .write-only-control { opacity: .58; }
.read-only button:disabled, .read-only input:disabled, .read-only select:disabled, .read-only textarea:disabled { cursor: not-allowed; }
.read-only .task-check:disabled { color: transparent; }
.read-only .task-card.completed .task-check:disabled { color: white; }

.password-dialog { width: min(520px, calc(100vw - 28px)); padding: 0; border: 0; border-radius: var(--radius-xl); background: var(--paper); color: var(--ink); box-shadow: 0 40px 120px rgba(0,0,0,.6); }
.password-dialog::backdrop { background: rgba(0,0,0,.72); backdrop-filter: blur(8px); }
.password-dialog-shell { position: relative; padding: 30px; display: grid; gap: 13px; }
.password-dialog .dialog-close { position: absolute; top: 22px; right: 22px; float: none; }
.password-dialog h2 { margin: 16px 0 0; font-family: Georgia, serif; font-size: 42px; font-weight: 500; letter-spacing: -.04em; }
.password-dialog p { margin: -5px 0 8px; color: var(--muted-dark); font-size: 12px; }
.password-dialog label { display: grid; gap: 6px; }
.password-dialog label > span { color: var(--muted-dark); font-size: 10px; letter-spacing: .1em; text-transform: uppercase; }
.password-dialog input { width: 100%; padding: 11px 12px; border: 1px solid var(--line-dark); border-radius: 10px; background: rgba(255,255,255,.55); color: var(--ink); outline: 0; }
.password-dialog .auth-error { color: var(--red); }

@media (max-width: 1050px) {
  .auth-shell { grid-template-columns: 1fr 390px; gap: 35px; }
  .auth-title { font-size: 70px; }
  .topbar { align-items: flex-start; }
  .topbar-right { align-items: stretch; flex-direction: column; }
}

@media (max-width: 760px) {
  .auth-shell { width: min(560px, calc(100% - 30px)); min-height: auto; padding: 22px 0 38px; grid-template-columns: 1fr; }
  .auth-intro { min-height: auto; gap: 76px; padding-bottom: 0; }
  .auth-title { font-size: clamp(52px, 15vw, 76px); }
  .auth-card { border-radius: var(--radius-xl); }
  .topbar-right { width: 100%; }
  .account-panel { width: 100%; }
  .account-copy { margin-right: auto; }
  .readonly-banner, .sync-conflict { align-items: flex-start; flex-direction: column; }
}

@media (max-width: 500px) {
  .auth-shell { gap: 28px; }
  .auth-intro { gap: 54px; }
  .auth-title { font-size: 52px; }
  .auth-card { padding: 24px 20px; }
  .auth-card h2 { margin-top: 26px; }
  .topbar-controls { display: grid; grid-template-columns: 1fr 1fr; }
  .account-panel { flex-wrap: wrap; }
  .sync-state { order: 3; width: 100%; text-align: left; }
}