/* Shared form inputs — source of truth: DESIGN.md §5.8. Scope: global. */

.field {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  margin-bottom: var(--space-4);
}

.field-label {
  font-size: var(--text-meta);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-secondary);
}

.field-input {
  height: 48px;
  padding: 0 var(--space-4);
  background: var(--surface-3);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-tile);
  color: var(--text-primary);
  transition: border-color var(--dur-fast) ease, box-shadow var(--dur-fast) ease;
}
.field-input::placeholder { color: var(--text-tertiary); }

/* Rails wraps an invalid field in <div class="field_with_errors">. Without
   this, the wrapped input stops being a direct flex child of .field and
   collapses to its default content width — the field visibly shrinks on error.
   `display: contents` makes the wrapper transparent to layout, so the input
   keeps behaving (and sizing) exactly as it does when valid. */
.field_with_errors {
  display: contents;
}
.field-input:focus {
  outline: none;
  border-color: var(--accent-blue);
  box-shadow: 0 0 0 4px var(--accent-blue-glow);
}

/* Textareas share the input's skin but must size to their content: the 48px
   fixed height above would otherwise crop them to a single line. */
textarea.field-input {
  height: auto;
  min-height: 48px;
  padding: var(--space-3) var(--space-4);
  line-height: 1.5;
  resize: vertical;
}
/* Auto-growing ones (textarea-autogrow) drive their own height. Cap it so a long
   description can't push a modal's Save button out of reach — past the cap the
   textarea scrolls itself, keeping the caret in view. */
textarea.field-input[data-controller~="textarea-autogrow"] {
  resize: none;
  max-height: 40vh;
  /* Keep that scrollbar dark — the UA default renders light on this surface. */
  scrollbar-width: thin;
  scrollbar-color: var(--border-strong) transparent;
}

.field-error {
  min-height: 1em;
  font-size: var(--text-caption);
  color: var(--danger);
}

/* Explanatory note under a field ("Leave blank to keep…"). */
.field-hint {
  font-size: var(--text-caption);
  color: var(--text-tertiary);
}

.field-input[aria-invalid="true"] { border-color: var(--danger); }

.form-flash {
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-tile);
  font-size: var(--text-meta);
  margin-bottom: var(--space-4);
}
.form-flash-alert { background: rgba(227, 52, 47, 0.15); color: #ff9c98; }
.form-flash-notice { background: rgba(31, 157, 85, 0.15); color: #7fe0aa; }

/* Toast notifications. The stack is a body-level sibling of #page-content and
   floats over the page: in the flow it occupied a full-bleed strip of page
   background between the header and the content, which read as part of the
   header. Never blocks the page — only the banners themselves take clicks. */
.flash-stack {
  position: fixed;
  top: calc(56px + var(--space-3)); /* clears the sticky header */
  left: var(--space-4);
  right: var(--space-4);
  z-index: 400; /* over header (100), mini-player (200), drawer (300) */
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  pointer-events: none;
}
@media (min-width: 768px) {
  .flash-stack {
    top: calc(70px + var(--space-3)); /* header grows at this breakpoint */
    left: auto;
    max-width: 420px;
  }
}
.flash-stack .form-flash {
  margin-bottom: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  pointer-events: auto;
  border: 1px solid var(--border-subtle);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.45);
  animation: flash-enter var(--dur-fast) ease-out;
}
/* Floating over content, so the tints must be opaque rather than translucent. */
.flash-stack .form-flash-notice { background: color-mix(in srgb, var(--success) 22%, var(--surface-2)); }
.flash-stack .form-flash-alert { background: color-mix(in srgb, var(--danger) 22%, var(--surface-2)); }
.flash-stack .form-flash.is-leaving {
  opacity: 0;
  transform: translateY(-8px);
  transition: opacity 180ms ease, transform 180ms ease;
}

@keyframes flash-enter {
  from { opacity: 0; transform: translateY(-8px); }
  to { opacity: 1; transform: none; }
}
@media (prefers-reduced-motion: reduce) {
  .flash-stack .form-flash { animation: none; }
  .flash-stack .form-flash.is-leaving { transition: none; }
}

.form-flash__close {
  flex: 0 0 auto;
  border: 0;
  background: transparent;
  color: inherit;
  opacity: 0.7;
  cursor: pointer;
  font-size: 1rem;
  line-height: 1;
  padding: var(--space-1);
}
.form-flash__close:hover { opacity: 1; }

/* Custom file uploader (file-upload controller) — replaces the native file
   input UI everywhere. The real <input> is transparent and overlays the box so
   the whole area is a click target and remains interactable for tests. */
.uploader {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 128px;
  padding: var(--space-4);
  border: 1px dashed var(--border-strong);
  border-radius: var(--radius-card);
  background: var(--surface-3);
  color: var(--text-secondary);
  cursor: pointer;
  overflow: hidden;
  transition: border-color var(--dur-fast) ease, color var(--dur-fast) ease;
}
.uploader:hover { border-color: var(--accent-blue); color: var(--text-primary); }
.uploader.is-filled { border-style: solid; }

.uploader__input {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  cursor: pointer;
}

.uploader__prompt {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
  text-align: center;
  font-size: var(--text-meta);
  font-weight: 600;
  pointer-events: none;
}
.uploader__prompt .icon { width: 28px; height: 28px; }
.uploader.is-filled .uploader__prompt { display: none; }

/* Image uploader: preview fills the box once an image is chosen. It sits over
   the transparent file input, so it must let clicks through — otherwise, when a
   preview is already shown (e.g. editing an item that has a poster), the file
   input beneath is unclickable and you can't pick a replacement. */
.image-preview {
  display: none;
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  pointer-events: none;
}
.image-preview.is-visible { display: block; }

/* File (video) uploader: reveal the filename + check once a file is chosen. */
.uploader__status {
  display: none;
  align-items: center;
  gap: var(--space-3);
  max-width: 100%;
  font-size: var(--text-meta);
  font-weight: 600;
  pointer-events: none;
}
.uploader.is-filled .uploader__status { display: flex; }
.uploader--file.is-filled { color: var(--text-primary); }
.uploader__status .icon { width: 24px; height: 24px; flex-shrink: 0; }
.uploader__filename {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.uploader__check { color: var(--success); }