/* Copyright 2026 Mozilla Foundation
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

/* Digital signature properties panel.
 *
 * Floating doorhanger anchored to #signaturePropertiesButton. Lists every
 * signature in the open PDF as a card, with a banner summarising the
 * overall verification state.
 */

:root {
  --sig-card-border: light-dark(rgb(228 228 232), rgb(82 82 86));
  --sig-card-bg: var(--field-bg-color, light-dark(white, rgb(64 64 68)));
  --sig-card-nested-bg: light-dark(rgb(252 252 253), rgb(72 72 76));
  --sig-row-color: light-dark(rgb(58 58 60), rgb(228 228 232));
  --sig-detail-color: light-dark(rgb(96 96 96), rgb(180 180 184));
  --sig-divider-color: light-dark(rgb(228 228 232), rgb(82 82 86));
  --sig-summary-hover-color: light-dark(rgb(28 67 138), rgb(126 169 255));
  --sig-link-color: light-dark(rgb(28 113 216), rgb(126 169 255));
  --sig-link-hover-bg: light-dark(
    rgb(28 113 216 / 0.1),
    rgb(126 169 255 / 0.15)
  );
  --sig-banner-verified-bg: light-dark(rgb(228 247 235), rgb(28 84 49));
  --sig-banner-verified-color: light-dark(rgb(16 92 47), rgb(176 232 196));
  --sig-banner-warn-bg: light-dark(rgb(255 247 217), rgb(95 67 9));
  --sig-banner-warn-color: light-dark(rgb(124 84 9), rgb(255 222 153));
  --sig-banner-error-bg: light-dark(rgb(254 226 235), rgb(122 21 51));
  --sig-banner-error-color: light-dark(rgb(167 26 70), rgb(255 188 207));

  /* Tint colours for the row / toolbar icons. These are paired with
   * `mask-image` so the icons recolour for light/dark/HCM. The four
   * semantics map to: default = grey (signature crypto verified but
   * not endorsed), warn = orange (cert trust/validity issue),
   * error = red (signature itself failed or could not be checked),
   * verified = green (only used for the top-level "everything fine"
   * row and the toolbar's verified badge). */
  --sig-icon-default: light-dark(rgb(150 150 150), rgb(180 180 184));
  --sig-icon-warn: light-dark(rgb(217 142 27), rgb(255 178 77));
  --sig-icon-error: light-dark(rgb(196 31 71), rgb(255 117 145));
  --sig-icon-verified: light-dark(rgb(29 142 61), rgb(106 210 126));

  @media screen and (forced-colors: active) {
    /* HCM keywords are picked by *semantic role*, not by hue — the
     * user's high-contrast theme resolves them to whatever palette it
     * ships. The same role-vocabulary as alt-text
     * (annotation_editor_layer_builder.css:261-275) is used here so
     * the two panels read consistently:
     *   - ButtonFace / ButtonText: "control surface + text"
     *     (banner background + body text inside it).
     *   - AccentColor: the user's accent — used as a saturated
     *     emphasis foreground for severity icons and the banner's
     *     left stripe (same role alt-text uses for its hover
     *     foreground).
     *   - ButtonBorder: dedicated control-border keyword for the
     *     outer card frame.
     *   - GrayText: muted text (detail rows, divider, default
     *     "everything OK" row icon).
     *   - LinkText: link colour.
     * Background-typed keywords are never used as foregrounds. */
    --sig-card-border: ButtonBorder;
    --sig-card-bg: Canvas;
    --sig-card-nested-bg: ButtonFace;
    --sig-row-color: ButtonText;
    --sig-detail-color: GrayText;
    --sig-divider-color: GrayText;
    --sig-summary-hover-color: AccentColor;
    --sig-link-color: LinkText;
    --sig-link-hover-bg: transparent;
    --sig-banner-verified-bg: ButtonFace;
    --sig-banner-verified-color: ButtonText;
    --sig-banner-warn-bg: ButtonFace;
    --sig-banner-warn-color: ButtonText;
    --sig-banner-error-bg: ButtonFace;
    --sig-banner-error-color: ButtonText;
    /* Severities collapse to the same emphasis keyword (AccentColor)
     * in HCM — same trick as alt-text where `done` and `warning`
     * share their hover colour. The glyph shape (check vs `!` vs `✕`)
     * carries the remaining distinction. The neutral "row crypto
     * verified" check stays muted (GrayText). */
    --sig-icon-default: GrayText;
    --sig-icon-warn: AccentColor;
    --sig-icon-error: AccentColor;
    --sig-icon-verified: AccentColor;
  }
}

#signaturePropertiesButton {
  /* Default (no state class yet): use the regular signature icon.
   * Mirror under RTL via the shared --dir-factor so the icon stays
   * visually aligned with the rest of the toolbar (same pattern as
   * the comment button). The state-* rules below override
   * `mask-image` only — the transform is inherited. */
  &::before {
    mask-image: var(--toolbarButton-editorSignature-icon);
    transform: scaleX(var(--dir-factor));
  }

  /* When a verification state is set, switch the mask to the matching
   * state badge and tint via background-color so the badge inherits
   * light/dark/HCM via the `--sig-icon-*` vars. */
  &.state-verified::before,
  &.state-warn::before,
  &.state-error::before {
    opacity: 1;
  }
  &.state-verified::before {
    mask-image: var(--toolbarButton-signaturePropertiesVerified-icon);
    background-color: var(--sig-icon-verified);
  }
  &.state-warn::before {
    mask-image: var(--toolbarButton-signaturePropertiesError-icon);
    background-color: var(--sig-icon-warn);
  }
  &.state-error::before {
    mask-image: var(--toolbarButton-signaturePropertiesError-icon);
    background-color: var(--sig-icon-error);
  }

  /* Loading state: three .loadingDot spans pulse in sequence via
   * `animation-delay`. The spans are injected once at construction (see
   * SignaturePropertiesManager) and are width/height 0 by default thanks
   * to the `.toolbarButton > span` rule — they only become visible when
   * this `state-loading` modifier is set. */
  &.state-loading {
    &::before {
      display: none;
    }
    .loadingDot {
      display: inline-block;
      width: 4px;
      height: 4px;
      margin: 0 1px;
      border-radius: 50%;
      background: var(--toolbar-icon-bg-color);
      animation: signaturePropertiesDot 1.2s ease-in-out infinite both;

      &:nth-child(2) {
        animation-delay: 0.2s;
      }
      &:nth-child(3) {
        animation-delay: 0.4s;
      }
    }
  }
}

@keyframes signaturePropertiesDot {
  0%,
  80%,
  100% {
    opacity: 0.3;
    transform: scale(0.85);
  }
  40% {
    opacity: 1;
    transform: scale(1);
  }
}

#signaturePropertiesPanel {
  width: 320px;
  padding: 0;
}

.signaturePropertiesContainer {
  display: flex;
  flex-direction: column;
  max-height: 70vh;
  overflow: hidden;
}

.sigBanner {
  margin: 12px 12px 8px;
  padding: 10px 12px;
  border-radius: 6px;
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 12.5px;
  line-height: 1.35;
  /* The left stripe reuses the per-severity icon tint so the banner
   * keeps a meaningful accent in HCM (where the bg/fg both flatten to
   * Canvas/CanvasText). The icon tint vars are themed semantically
   * ("danger" / "accent" / "muted"), so the stripe colour follows the
   * user's high-contrast palette without us hard-coding any hue. */
  border-inline-start: 3px solid currentcolor;

  &.verified {
    background: var(--sig-banner-verified-bg);
    color: var(--sig-banner-verified-color);
    border-inline-start-color: var(--sig-icon-verified);
  }
  &.warn {
    background: var(--sig-banner-warn-bg);
    color: var(--sig-banner-warn-color);
    border-inline-start-color: var(--sig-icon-warn);
  }
  &.error {
    background: var(--sig-banner-error-bg);
    color: var(--sig-banner-error-color);
    border-inline-start-color: var(--sig-icon-error);
  }
}

.signaturePropertiesList {
  list-style: none;
  margin: 0;
  padding: 0 12px 12px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.sigCard {
  border: 1px solid var(--sig-card-border);
  border-radius: 6px;
  padding: 8px 10px;
  display: flex;
  flex-direction: column;
  gap: 3px;
  background: var(--sig-card-bg);

  .signer {
    font-weight: 600;
    font-size: 13px;
    letter-spacing: 0.1px;
    margin-bottom: 1px;
  }

  .row {
    display: flex;
    flex-wrap: nowrap;
    gap: 2px 6px;
    /* Icon aligns to the first line of multi-line text, not the centre
     * of the wrapped block. */
    align-items: flex-start;
    font-size: 12px;
    color: var(--sig-row-color);
    min-height: 18px;

    > span {
      flex: 1 1 auto;
      /* Allow the span to shrink below its intrinsic min-content width
       * so long text wraps inside the row instead of pushing the whole
       * label below the icon. */
      min-width: 0;
      overflow-wrap: break-word;
    }

    &::before {
      content: "";
      display: inline-block;
      width: 14px;
      height: 14px;
      flex-shrink: 0;
      /* Keep the icon at the same vertical rhythm as a single line of
       * text so it visually pairs with the first row of the wrapped
       * label. */
      margin-top: 1px;
      /* The icon shape is a mask-image; the tint comes from
       * `background-color`, which lets every row icon adapt to
       * light/dark/HCM via the `--sig-icon-*` vars in `:root`. */
      mask-position: center;
      mask-repeat: no-repeat;
      mask-size: contain;
      mask-image: var(--signatureProperties-rowCheck-icon);
      background-color: var(--sig-icon-default);
      /* Mirror under RTL — the per-status modifiers below override
       * `mask-image` only, so the transform applies uniformly. */
      transform: scaleX(var(--dir-factor));
    }

    /* "Everything-OK" rows (signature crypto verified, even if the
     * cert chain is untrusted/expired/etc.) and the trusted-cert row
     * keep the muted grey check. */
    &.status--verified::before,
    &.status--untrusted::before,
    &.status--expired::before,
    &.status--revoked::before,
    &.cert--trusted::before {
      mask-image: var(--signatureProperties-rowCheck-icon);
      background-color: var(--sig-icon-default);
    }
    &.cert--untrusted::before,
    &.cert--expired::before {
      mask-image: var(--toolbarButton-signaturePropertiesError-icon);
      background-color: var(--sig-icon-warn);
    }
    &.cert--revoked::before,
    &.status--invalid::before,
    &.status--unknown::before,
    &.cert--unknown::before {
      mask-image: var(--toolbarButton-signaturePropertiesError-icon);
      background-color: var(--sig-icon-error);
    }
  }

  /* Promote to a real green tick only on the top-level card AND only
   * when every signature in the document is verified. The
   * `.sigCard--top-allfine` modifier is set in #render. */
  &.sigCard--top-allfine > .row.status--verified::before,
  &.sigCard--top-allfine > .row.cert--trusted::before {
    mask-image: var(--toolbarButton-signaturePropertiesVerified-icon);
    background-color: var(--sig-icon-verified);
  }

  .detail {
    font-size: 11.5px;
    color: var(--sig-detail-color);
    margin-inline-start: 20px;
    line-height: 1.35;
  }

  .viewCert {
    align-self: center;
    margin-top: 4px;
    color: var(--sig-link-color);
    background: none;
    border: none;
    cursor: pointer;
    font-size: 12px;
    padding: 2px 4px;
    border-radius: 4px;
    white-space: nowrap;

    &:hover {
      background: var(--sig-link-hover-bg);
      text-decoration: underline;
    }
    &:focus-visible {
      outline: 2px solid var(--sig-link-color);
      outline-offset: 1px;
    }
  }

  .subSignatures {
    margin-top: 4px;
    border-top: 1px dashed var(--sig-divider-color);
    padding-top: 4px;
    font-size: 12px;

    > summary {
      cursor: pointer;
      user-select: none;
      list-style: none;
      color: var(--sig-detail-color);
      display: flex;
      align-items: center;
      gap: 4px;
      padding: 2px 0;

      &:hover {
        color: var(--sig-summary-hover-color);
      }
      &::-webkit-details-marker {
        display: none;
      }
      &::before {
        content: "";
        display: inline-block;
        width: 0;
        height: 0;
        border-top: 4px solid transparent;
        border-bottom: 4px solid transparent;
        border-inline-start: 5px solid currentcolor;
        transition: transform 0.15s;
      }
    }
    &[open] > summary::before {
      transform: rotate(90deg);
    }
  }

  .nested,
  .subSignatures > .signaturePropertiesList {
    padding: 4px 0 2px;
    margin-inline-start: 0;
    gap: 4px;
  }

  .nested {
    margin-top: 4px;
  }

  /* Cosmetics for cards nested inside another (sub-)signature. */
  .subSignatures .sigCard,
  .nested .sigCard {
    padding: 6px 8px;
    background: var(--sig-card-nested-bg);
    gap: 2px;
  }

  .subSignatures .signer,
  .nested .signer {
    font-size: 12px;
    font-weight: 500;
  }
}