/*
 * The painted sign-in, matching the Amiga client's screen: the river town
 * full-bleed, the carved wordmark above, and the form on an oak plank with
 * parchment fields and iron plates.
 *
 * Scoped to body.login-screen. page_guard, sheet_print and adventure_print
 * reuse .auth-page / .auth-card for a one-line refusal, and those stay on the
 * cold-iron card. The colours below are this painting's materials — oak,
 * parchment, iron — declared on the page rather than in tokens.css, which is
 * the chrome and is deliberately not this warm.
 */

.login-screen {
  --login-oak-deep: #24160d;
  --login-cream: #f4e6c4;
  --login-cream-dim: #e4d0a4;
  --login-ink: #24160d;
  --login-parchment-0: #f8ebcd;
  --login-parchment-1: #e4cda0;
  --login-iron-0: #f2f4f7;
  --login-iron-1: #c5ccd4;
  --login-iron-2: #8d97a3;
  --login-brass-0: #f3d898;
  --login-brass-1: #c9a45c;
  --login-brass-2: #a07e3a;
  --login-error: #6e1c14;
  --login-error-bg: #f6e4c4;
  --login-focus: #ffe08a;

  min-height: 100vh;
  min-height: 100dvh;
  background-color: #140e0c;
  background-image: url("../images/login/login-bg.webp");
  background-position: center center;
  background-size: cover;
  background-repeat: no-repeat;
  background-attachment: fixed;
}

/* Fixed backgrounds repaint badly while scrolling on touch devices. The
   painting still covers the page; it just scrolls with it. */
@media (hover: none) {
  .login-screen { background-attachment: scroll; }
}

/* A quiet vignette so the plank sits in the lit middle of the painting
   without dimming the town itself into a frame. */
.login-screen::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background: radial-gradient(ellipse at 50% 42%, transparent 42%, rgba(0, 0, 0, 0.38) 100%);
}

.login-screen .site-bar,
.login-screen .login-stage { position: relative; z-index: 1; }

/* The bar has to stay readable over the sky. The top of the painting is
   dark purple, and a near-opaque strip keeps the links at the same contrast
   they have on every other page. */
.login-screen .site-bar {
  background: rgba(12, 14, 18, 0.92);
  border-bottom: 1px solid rgba(240, 207, 122, 0.32);
  backdrop-filter: blur(8px);
}

.login-screen .site-bar a:focus-visible {
  outline: 2px solid var(--login-focus);
  outline-offset: 3px;
  border-radius: 2px;
}

.login-stage {
  flex: 1 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 100%;
  padding: 1.25rem 0.75rem 2rem;
}

/* auto margins centre the cluster when the viewport is taller than it, and
   collapse to nothing when it is not — so a short phone can still scroll to
   the top of the logo rather than having it clipped above the fold. */
.login-cluster {
  margin-top: auto;
  margin-bottom: auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  width: min(38rem, 100%);
  gap: 0.85rem;
}

.login-logo {
  display: block;
  width: min(36rem, 100%);
  height: auto;
  filter: drop-shadow(0 12px 18px rgba(0, 0, 0, 0.6));
}

.login-screen .auth-card {
  position: relative;
  width: min(30rem, 100%);
  margin: 0;
  padding: 1.5rem 1.4rem 1.05rem;
  border: 3px solid var(--login-oak-deep);
  border-radius: 5px;
  color: var(--login-cream);
  background-color: #3a2416;
  /* Noise multiplies a hand-set stain. Two crossing repeats read as graph
     paper, which is why the grain is one image and not a second gradient. */
  background-image:
    url("../images/login/oak-noise.webp"),
    linear-gradient(
      180deg,
      #5e3c24 0%,
      #4a301c 18%,
      #3a2414 36%,
      #583820 52%,
      #342014 70%,
      #4a2e1c 84%,
      #2a180e 100%
    );
  background-size: 192px, auto;
  background-blend-mode: multiply, normal;
  box-shadow:
    0 22px 48px rgba(0, 0, 0, 0.58),
    inset 0 1px 0 rgba(255, 224, 180, 0.32),
    inset 0 0 0 1px rgba(120, 74, 38, 0.85),
    inset 0 0 48px rgba(0, 0, 0, 0.32);
}

/* Iron corner caps. An L, not a box: a full border plus a shadow draws a
   square, and clip-path is what keeps the rivet's shadow on the cap alone. */
.login-bracket {
  position: absolute;
  width: 44px;
  height: 44px;
  pointer-events: none;
  background: linear-gradient(155deg, #f4f6f8 0%, #c5ccd4 40%, #7e8792 62%, #e4e8ec 100%);
  filter: drop-shadow(0 1px 1px rgba(0, 0, 0, 0.7));
}

.login-bracket::after {
  content: "";
  position: absolute;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: radial-gradient(circle at 35% 35%, #fff 0 1.5px, #8b949e 2px, #3c444d 3.6px);
  box-shadow: 0 0 0 1px rgba(0, 0, 0, 0.35);
}

.login-bracket-nw {
  top: 6px;
  left: 6px;
  clip-path: polygon(0 0, 100% 0, 100% 36%, 36% 36%, 36% 100%, 0 100%);
}
.login-bracket-ne {
  top: 6px;
  right: 6px;
  clip-path: polygon(0 0, 100% 0, 100% 100%, 64% 100%, 64% 36%, 0 36%);
}
.login-bracket-sw {
  bottom: 6px;
  left: 6px;
  clip-path: polygon(0 0, 36% 0, 36% 64%, 100% 64%, 100% 100%, 0 100%);
}
.login-bracket-se {
  right: 6px;
  bottom: 6px;
  clip-path: polygon(64% 0, 100% 0, 100% 100%, 0 100%, 0 64%, 64% 64%);
}

.login-bracket-nw::after { top: 6px; left: 6px; }
.login-bracket-ne::after { top: 6px; right: 6px; }
.login-bracket-sw::after { bottom: 6px; left: 6px; }
.login-bracket-se::after { right: 6px; bottom: 6px; }

.login-screen .auth-head {
  margin: 0 0 0.9rem;
  text-align: center;
}

.login-screen .auth-card h1 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.45rem;
  font-weight: 650;
  letter-spacing: 0.02em;
  color: var(--login-cream);
  text-shadow: 0 1px 0 rgba(0, 0, 0, 0.45);
}

.login-screen .auth-sub {
  margin: 0.2rem 0 0;
  color: var(--login-cream-dim);
  font-family: var(--font-display);
  font-size: 1rem;
  line-height: 1.35;
}

.login-screen .auth-field {
  margin: 0 0 0.8rem;
  color: var(--login-cream);
}

.login-screen .auth-field > span {
  display: block;
  margin: 0 0 0.28rem;
  color: var(--login-cream);
  font-family: var(--font-display);
  font-size: 1.08rem;
  font-weight: 600;
}

.login-screen .auth-field em {
  color: var(--login-cream-dim);
  font-style: italic;
  font-weight: 500;
}

.login-screen .auth-field input {
  display: block;
  width: 100%;
  margin: 0;
  padding: 0.55rem 0.7rem;
  font-family: var(--font-display);
  font-size: 1.05rem;
  line-height: 1.3;
  color: var(--login-ink);
  background: linear-gradient(180deg, var(--login-parchment-0), var(--login-parchment-1));
  border: 1px solid #8a6840;
  border-radius: 2px;
  box-shadow: inset 0 2px 4px rgba(58, 32, 10, 0.38);
  caret-color: var(--login-ink);
}

.login-screen .auth-field input:focus {
  outline: 3px solid var(--login-focus);
  outline-offset: 2px;
}

.login-screen .auth-error {
  min-height: 1.35em;
  margin: 0 0 0.75rem;
  font-family: var(--font-display);
  font-size: 0.98rem;
  line-height: 1.35;
  color: var(--login-error);
}

.login-screen .auth-error:not(:empty) {
  padding: 0.4rem 0.6rem;
  background: var(--login-error-bg);
  border-radius: 2px;
}

.login-screen .login-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.login-screen .login-btn {
  flex: 1 1 6.5rem;
  min-height: 2.75rem;
  width: auto;
  margin: 0;
  padding: 0.5rem 0.55rem;
  border: 1px solid #4a525b;
  border-radius: 3px;
  background: linear-gradient(
    180deg,
    var(--login-iron-0) 0%,
    var(--login-iron-1) 46%,
    #d8dee5 54%,
    var(--login-iron-2) 100%
  );
  color: var(--login-ink);
  font-family: var(--font-display);
  font-size: 1.02rem;
  font-weight: 650;
  line-height: 1.15;
  letter-spacing: 0.01em;
  text-align: center;
  text-decoration: none;
  cursor: pointer;
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.8),
    0 2px 0 #1a120c;
}

.login-screen .auth-submit {
  width: auto;
  border-color: #6d5422;
  background: linear-gradient(
    180deg,
    var(--login-brass-0) 0%,
    var(--login-brass-1) 46%,
    #e4c57a 54%,
    var(--login-brass-2) 100%
  );
  color: var(--login-ink);
}

.login-screen .login-btn:hover {
  text-decoration: none;
  filter: brightness(1.06);
}

.login-screen .login-btn:active {
  transform: translateY(1px);
  box-shadow:
    inset 0 1px 2px rgba(0, 0, 0, 0.28),
    0 1px 0 #1a120c;
}

.login-screen .login-btn:focus-visible {
  outline: 3px solid var(--login-focus);
  outline-offset: 3px;
}

.login-screen .login-btn:disabled {
  opacity: 0.55;
  cursor: not-allowed;
  transform: none;
  filter: none;
}

.login-screen .auth-switch {
  margin: 0.75rem 0 0;
  text-align: center;
  color: var(--login-cream);
  font-family: var(--font-display);
  font-size: 0.98rem;
}

.login-screen .auth-closed { color: var(--login-cream); }

.login-screen .auth-foot {
  margin: 0.7rem 0 0;
  text-align: center;
  font-size: 0.9rem;
}

.login-screen .auth-foot a {
  color: var(--login-cream);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.login-screen .auth-foot a:hover { color: var(--login-focus); }

.login-screen .auth-foot a:focus-visible {
  outline: 3px solid var(--login-focus);
  outline-offset: 3px;
}

/* The prompt the script still updates. The button itself says the action. */
.login-sr {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

@media (max-width: 420px) {
  .login-stage { padding: 0.7rem 0.55rem 1.2rem; }
  .login-cluster { gap: 0.55rem; }
  .login-screen .auth-card { padding: 1.2rem 0.85rem 0.85rem; }
  .login-screen .auth-card h1 { font-size: 1.28rem; }
  .login-screen .login-btn {
    font-size: 0.86rem;
    padding: 0.5rem 0.28rem;
    white-space: nowrap;
  }
  .login-bracket { width: 32px; height: 32px; }
  .login-screen .site-bar-in {
    padding: 0.4rem 0.7rem;
    gap: 0.2rem 0.7rem;
  }
}

@media (forced-colors: active) {
  .login-screen { background-image: none; }
  .login-screen .login-btn,
  .login-screen .auth-field input,
  .login-screen .auth-card {
    border: 1px solid ButtonText;
    background: Canvas;
    color: CanvasText;
    box-shadow: none;
  }
  .login-screen .auth-error:not(:empty) {
    background: Canvas;
    color: CanvasText;
  }
}