/* ═══════════════════════════════════════════════════
   拾墨 网页登录 -- Cool Minimal
   清凉 · 极致
   ═══════════════════════════════════════════════════ */

.web-login-page {
  --cm-bg: #fafaf8;
  --cm-ink: #1c1c1c;
  --cm-muted: rgba(28, 28, 28, 0.52);
  --cm-line: rgba(0, 0, 0, 0.06);
  --cm-accent: #5b8a9e;
  --cm-accent-dim: #4a7284;
  --cm-accent-soft: rgba(91, 138, 158, 0.08);
  --cm-shadow: rgba(0, 0, 0, 0.06);
  min-height: 100dvh;
  background:
    radial-gradient(circle at 18% 18%, rgba(91, 138, 158, 0.03), transparent 28rem),
    radial-gradient(circle at 82% 8%, rgba(91, 138, 158, 0.02), transparent 28rem),
    linear-gradient(135deg, #f3f2ef 0%, #fafaf8 48%, #f5f4f1 100%);
  color: var(--cm-ink);
}

/* Ultra-subtle paper grain */
.web-login-page::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 9999;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.8' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  opacity: 0.022;
}

.web-login-shell {
  position: relative;
  min-height: 100dvh;
  width: min(100vw - 36px, 520px);
  margin: 0 auto;
  display: grid;
  place-items: center;
  padding: clamp(28px, 5vw, 58px) 0;
}

.web-login-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  width: fit-content;
  margin: 2px auto 18px;
  color: var(--cm-ink);
  font-size: 0.94rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.web-login-brand img {
  width: 34px; height: 34px;
  border-radius: 8px;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
}

.web-login-card {
  position: relative;
  z-index: 1;
  width: 100%;
  padding: clamp(16px, 3vw, 20px);
  border: 1px solid var(--cm-line);
  border-radius: 20px;
  background: #fff;
  box-shadow: 0 8px 40px var(--cm-shadow);
}

.web-login-card::before {
  content: "";
  position: absolute;
  inset: 8px;
  z-index: -1;
  border: 1px solid rgba(0, 0, 0, 0.04);
  border-radius: 14px;
}

.web-login-card-head {
  display: grid;
  gap: 8px;
  justify-items: center;
  padding: 2px 8px 16px;
  text-align: center;
}

.web-login-card h1 {
  margin: 0;
  color: var(--cm-ink);
  font-size: clamp(2.25rem, 8vw, 3.18rem);
  font-weight: 600;
  letter-spacing: -0.04em;
  line-height: 0.98;
  white-space: nowrap;
}

.web-login-card-head p {
  max-width: 22rem;
  margin: 0;
  color: var(--cm-muted);
  font-size: 0.8rem;
  line-height: 1.55;
  text-align: center;
}

.web-login-state {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 38px;
  margin-bottom: 10px;
  border: 1px solid var(--cm-line);
  border-radius: 12px;
  background: rgba(0, 0, 0, 0.02);
  color: var(--cm-accent);
  font-size: 0.8rem;
  font-weight: 600;
  line-height: 1;
}

.web-login-qr-frame {
  position: relative;
  display: grid;
  grid-template: 1fr / 1fr;
  place-items: center;
  aspect-ratio: 1;
  min-height: 0;
  padding: clamp(20px, 7%, 30px);
  overflow: hidden;
  border: 1px solid var(--cm-line);
  border-radius: 16px;
  background: #f8f7f5;
}

.web-login-qr-frame::before,
.web-login-qr-frame::after {
  content: "";
  position: absolute;
  inset: 16px;
  border: 1px solid rgba(0, 0, 0, 0.04);
  border-radius: 12px;
  pointer-events: none;
}

.web-login-qr-frame::after {
  inset: 29px;
  border-color: rgba(91, 138, 158, 0.1);
}

.web-login-qr-frame canvas {
  display: block;
  grid-area: 1 / 1;
  align-self: center;
  justify-self: center;
  box-sizing: border-box;
  width: min(240px, calc(100% - 2px));
  height: auto;
  aspect-ratio: 1;
  border: 12px solid #fff;
  border-radius: 14px;
  background: #fbfcfa;
  box-shadow: 0 8px 28px rgba(0, 0, 0, 0.08);
}

.web-login-qr-frame.is-empty canvas { display: none; }

.web-login-qr-placeholder {
  display: grid;
  grid-area: 1 / 1;
  align-self: center;
  justify-self: center;
  place-items: center;
  width: min(240px, 100%);
  aspect-ratio: 1;
  border: 1px dashed rgba(0, 0, 0, 0.1);
  border-radius: 14px;
  background:
    linear-gradient(90deg, transparent 49%, rgba(0, 0, 0, 0.03) 50%, transparent 51%),
    linear-gradient(180deg, transparent 49%, rgba(0, 0, 0, 0.03) 50%, transparent 51%),
    rgba(0, 0, 0, 0.01);
}

.web-login-qr-placeholder::after {
  content: "QR";
  color: rgba(28, 28, 28, 0.2);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.18em;
}

.web-login-qr-placeholder[hidden] { display: none !important; }

.web-login-note {
  min-height: 48px;
  margin: 12px 0 0;
  display: grid;
  place-items: center;
  padding: 0 14px;
  border: 1px solid var(--cm-line);
  border-radius: 14px;
  background: rgba(0, 0, 0, 0.02);
  color: var(--cm-muted);
  font-size: 0.82rem;
  line-height: 1.55;
  text-align: center;
}

.web-login-actions {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
  margin-top: 12px;
}

.web-login-actions.is-single-action { grid-template-columns: 1fr; }

.web-login-button {
  width: 100%;
  min-height: 48px;
  border: 1px solid transparent;
  border-radius: 999px;
  font: inherit;
  font-size: 0.86rem;
  font-weight: 600;
  line-height: 1;
  white-space: nowrap;
  cursor: pointer;
  transition: background 150ms ease;
}

.web-login-button:active { transform: translateY(1px); }
.web-login-button[hidden] { display: none !important; }
.web-login-button:disabled { cursor: wait; opacity: 0.4; transform: none; }

.web-login-button-primary {
  background: var(--cm-accent);
  color: #fff;
  border-color: var(--cm-accent);
}

.web-login-button-primary:not(:disabled):hover { background: var(--cm-accent-dim); }

.web-login-button-secondary {
  border-color: var(--cm-line);
  background: #fff;
  color: var(--cm-ink);
}

.web-login-button-secondary:not(:disabled):hover {
  border-color: rgba(91, 138, 158, 0.3);
  background: var(--cm-accent-soft);
}

.web-login-toast {
  position: fixed;
  left: 50%;
  bottom: 24px;
  z-index: 1000;
  max-width: min(360px, calc(100vw - 32px));
  padding: 10px 14px;
  border: 1px solid var(--cm-line);
  border-radius: 999px;
  background: #fff;
  color: var(--cm-ink);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
  font-size: 0.8rem;
  line-height: 1.35;
  opacity: 0;
  pointer-events: none;
  text-align: center;
  transform: translate(-50%, 10px);
  transition: opacity 200ms ease, transform 200ms ease;
}

.web-login-toast.is-visible {
  opacity: 1;
  transform: translate(-50%, 0);
}

@media (prefers-reduced-motion: reduce) {
  .web-login-button, .web-login-toast { transition: none; }
}

@media (max-width: 860px) {
  .web-login-shell { width: min(100vw - 24px, 500px); padding-top: 28px; }
}

@media (max-width: 460px) {
  .web-login-shell { width: min(100vw - 20px, 430px); }
  .web-login-card { padding: 12px; border-radius: 16px; }
  .web-login-qr-frame { padding: 20px; }
}