/* ---- sign-in sheet ----------------------------------------------------------
   One header button opens a native modal dialog that slides in from the right
   over an ink scrim. Open and close transition transform and opacity only;
   display and overlay transition discretely so the exit can finish. */

.signin-btn {
  display: inline-flex;
  align-items: center;
  min-height: 2.75rem;
  padding: 0 1.35rem;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-pill);
  background: var(--surface);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
}

.signin-btn:hover {
  background-color: var(--panel);
  color: var(--accent-deep);
}

html:has(.signin-sheet[open]) {
  overflow: hidden;
}

.signin-sheet {
  position: fixed;
  inset: 0 0 0 auto;
  width: min(27.5rem, 100% - 2.5rem);
  max-width: none;
  height: 100%;
  max-height: none;
  margin: 0;
  padding: 0;
  border: 0;
  border-left: 1px solid var(--line);
  background: var(--panel);
  color: var(--ink-soft);
  box-shadow: -24px 0 60px -24px rgba(46, 61, 79, 0.3);
  transform: translateX(100%);
  transition: transform 0.3s var(--ease-soft),
              display 0.3s allow-discrete, overlay 0.3s allow-discrete;
}

.signin-sheet[open] {
  transform: none;
  transition-duration: 0.5s;
}

@starting-style {
  .signin-sheet[open] {
    transform: translateX(100%);
  }
}

.signin-sheet::backdrop {
  background: var(--scrim);
  opacity: 0;
  transition: opacity 0.3s var(--ease-soft),
              display 0.3s allow-discrete, overlay 0.3s allow-discrete;
}

.signin-sheet[open]::backdrop {
  opacity: 1;
  transition-duration: 0.45s;
}

@starting-style {
  .signin-sheet[open]::backdrop {
    opacity: 0;
  }
}

.signin-sheet__inner {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  height: 100%;
  overflow-y: auto;
  padding: clamp(1.25rem, 4vw, 2rem) clamp(1.25rem, 4vw, 2.25rem);
}

.signin-sheet__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.signin-sheet__title {
  color: var(--ink);
  font-family: var(--font-serif);
  font-size: clamp(1.6rem, 4vw, 1.9rem);
  font-weight: 450;
  line-height: 1.15;
}

.signin-sheet__close {
  display: grid;
  place-items: center;
  width: 2.75rem;
  height: 2.75rem;
  margin-right: -0.6rem;
  border: 0;
  border-radius: var(--radius-pill);
  background: transparent;
  color: var(--ink-soft);
  cursor: pointer;
  transition: background-color 0.25s var(--ease-soft);
}

.signin-sheet__close:hover {
  background-color: var(--bg-soft);
}

.signin-sheet__close svg {
  width: 1.25rem;
  height: 1.25rem;
}

.signin-sheet__note {
  margin-top: -0.75rem;
  font-size: 0.95rem;
}

.signin-sheet__list {
  list-style: none;
  display: grid;
  gap: 0.75rem;
}

.signin-option {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1.15rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  text-decoration: none;
  transition: background-color 0.25s var(--ease-soft), border-color 0.25s var(--ease-soft);
}

.signin-option:hover {
  border-color: var(--line-strong);
  background-color: var(--bg-soft);
}

.signin-option__icon {
  display: grid;
  place-items: center;
  flex-shrink: 0;
  width: 3rem;
  height: 3rem;
  border-radius: 14px;
  background: var(--accent-tint);
  color: var(--accent);
}

.signin-option__icon svg {
  width: 1.5rem;
  height: 1.5rem;
}

.signin-option__text {
  display: grid;
  flex-grow: 1;
  line-height: 1.35;
}

.signin-option__name {
  color: var(--ink);
  font-family: var(--font-serif);
  font-size: 1.35rem;
  font-weight: 500;
}

.signin-option__purpose {
  color: var(--ink-muted);
  font-size: 0.875rem;
}

.signin-option__arrow {
  flex-shrink: 0;
  width: 1.25rem;
  height: 1.25rem;
  color: var(--accent);
  transition: transform 0.3s var(--ease-soft);
}

.signin-option:hover .signin-option__arrow {
  transform: translateX(3px);
}

.signin-sheet__foot {
  margin-top: auto;
  padding-top: 1.5rem;
  border-top: 1px solid var(--line);
}

.signin-sheet__eyebrow {
  color: var(--ink-muted);
  font-size: 0.6875rem;
  font-weight: 600;
  line-height: 1.4;
  letter-spacing: 0.24em;
  text-transform: uppercase;
}

.signin-sheet__early {
  font-weight: 500;
}

/* Content follows the panel in, each block a beat behind the last. */
.signin-sheet__head,
.signin-sheet__note,
.signin-sheet__list li,
.signin-sheet__foot {
  opacity: 0;
  transform: translateX(18px);
  transition: opacity 0.4s var(--ease-soft), transform 0.5s var(--ease-soft);
}

.signin-sheet[open] :is(.signin-sheet__head, .signin-sheet__note, .signin-sheet__list li, .signin-sheet__foot) {
  opacity: 1;
  transform: none;
}

.signin-sheet[open] .signin-sheet__head { transition-delay: 0.08s; }
.signin-sheet[open] .signin-sheet__note { transition-delay: 0.13s; }
.signin-sheet[open] .signin-sheet__list li:nth-child(1) { transition-delay: 0.18s; }
.signin-sheet[open] .signin-sheet__list li:nth-child(2) { transition-delay: 0.24s; }
.signin-sheet[open] .signin-sheet__foot { transition-delay: 0.3s; }

@starting-style {
  .signin-sheet[open] :is(.signin-sheet__head, .signin-sheet__note, .signin-sheet__list li, .signin-sheet__foot) {
    opacity: 0;
    transform: translateX(18px);
  }
}

/* The sheet renders in the top layer, above the custom cursor, so while it is
   open the native cursor returns and the custom one steps aside. */
.cursor-on:has(.signin-sheet[open]) :is(.cursor-dot, .cursor-ring) {
  visibility: hidden;
}

.cursor-on:has(.signin-sheet[open]) body {
  cursor: auto;
}

.cursor-on:has(.signin-sheet[open]) :is(a, button) {
  cursor: pointer;
}