/* Riddle — a Tom Riddle diary tribute. Aged-paper dark palette, fullscreen canvas. */

html, body {
  margin: 0;
  padding: 0;
  height: 100%;
  background: #0e0c0a;
  overflow: hidden;            /* the page *is* the diary; no scroll */
  font-family: "EB Garamond", Georgia, serif;
  color: #c9bda4;
}

#page {
  display: block;
  width: 100vw;
  height: 100vh;                 /* fallback */
  height: 100dvh;                /* iOS: tracks the visible viewport, no toolbar jump */
  touch-action: none;            /* let us capture the pen, not the browser's gestures */
  cursor: crosshair;
  background: #1a1611;           /* dim parchment in lamplight */
}

#status {
  position: fixed;
  top: 18px;
  left: 50%;
  transform: translateX(-50%);
  font-style: italic;
  letter-spacing: .04em;
  color: #8a7d63;
  font-size: 18px;
  text-shadow: 0 1px 2px rgba(0,0,0,.6);
  pointer-events: none;
  transition: opacity .6s ease;
}

#status.hidden { opacity: 0; }

#hint {
  position: fixed;
  bottom: 16px;
  left: 50%;
  transform: translateX(-50%);
  margin: 0;
  font-style: italic;
  color: #6b5f4a;
  font-size: 14px;
  letter-spacing: .03em;
  pointer-events: none;
  transition: opacity .8s ease;
}

#hint.faded { opacity: 0; }

/* --- config panel ---------------------------------------------------------- */
#configBtn {
  position: fixed;
  top: 16px;
  right: 18px;
  width: 38px;
  height: 38px;
  border: 1px solid #3a3327;
  border-radius: 50%;
  background: rgba(26, 22, 16, 0.7);
  color: #8a7d63;
  font-size: 18px;
  cursor: pointer;
  z-index: 20;
  transition: background .2s, transform .2s;
}
#configBtn:hover { background: rgba(60, 50, 36, 0.9); transform: rotate(30deg); }
#configBtn:disabled { opacity: .35; cursor: not-allowed; transform: none; }

#configPanel {
  position: fixed;
  top: 64px;
  right: 18px;
  width: 320px;
  max-width: calc(100vw - 36px);
  padding: 18px 18px 14px;
  background: #15110c;
  border: 1px solid #3a3327;
  border-radius: 8px;
  box-shadow: 0 8px 28px rgba(0,0,0,.55);
  z-index: 19;
  font-family: "EB Garamond", Georgia, serif;
  color: #c9bda4;
  transition: opacity .2s ease, transform .2s ease;
}
#configPanel.hidden { opacity: 0; transform: translateY(-6px); pointer-events: none; }
#configPanel h2 {
  margin: 0 0 12px;
  font-style: italic;
  font-weight: 400;
  font-size: 18px;
  color: #8a7d63;
  letter-spacing: .03em;
}
#configPanel label {
  display: block;
  margin-bottom: 10px;
  font-size: 13px;
  color: #9c8f74;
  letter-spacing: .02em;
}
#configPanel input,
#configPanel select {
  display: block;
  width: 100%;
  margin-top: 4px;
  padding: 7px 9px;
  background: #1f1a13;
  border: 1px solid #3a3327;
  border-radius: 4px;
  color: #e7dcbc;
  font-family: "EB Garamond", Georgia, serif;
  font-size: 14px;
  outline: none;
}
#configPanel input:focus,
#configPanel select:focus { border-color: #6b5f4a; }
#configPanel select option { background: #1f1a13; }
.cfg-actions { display: flex; gap: 10px; margin-top: 6px; }
#configPanel button {
  flex: 1;
  padding: 8px 10px;
  background: #3a3327;
  border: 1px solid #4a4133;
  border-radius: 4px;
  color: #e7dcbc;
  font-family: inherit;
  font-size: 14px;
  cursor: pointer;
  letter-spacing: .03em;
}
#configPanel button.ghost { background: transparent; color: #8a7d63; }
#configPanel button:hover { background: #4a4133; }
#configPanel button.ghost:hover { background: rgba(80,70,52,.4); }
.cfg-note {
  margin: 12px 0 0;
  font-size: 12px;
  font-style: italic;
  color: #6b5f4a;
  line-height: 1.4;
  letter-spacing: .02em;
}
#cfgSaved {
  position: fixed;
  top: 16px;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(26,22,16,.92);
  border: 1px solid #3a3327;
  color: #c9bda4;
  padding: 8px 16px;
  border-radius: 6px;
  font-style: italic;
  font-size: 14px;
  z-index: 30;
  pointer-events: none;
  opacity: 0;
  transition: opacity .25s ease;
}
#cfgSaved.show { opacity: 1; }

/* --- shared: generic .hidden for landing/admin (ID-scoped .hidden on the
   diary page is higher specificity, so they keep their opacity:0 behavior) --- */
.hidden { display: none; }

/* --- landing page ---------------------------------------------------------- */
body.landing {
  margin: 0;
  overflow: auto;
  background: #1a1611;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  font-family: "EB Garamond", Georgia, serif;
  color: #c9bda4;
}
.landing-wrap {
  max-width: 640px;
  padding: 48px 24px;
  text-align: center;
}
.landing-title {
  font-family: "Dancing Script", cursive;
  font-size: clamp(28px, 5.5vw, 52px);
  font-weight: 700;
  color: #e7dcbc;
  margin: 0 0 28px;
  letter-spacing: .01em;
  white-space: nowrap;            /* 强制单行:哈利波特的神奇日记本 */
  line-height: 1.15;
  text-shadow: 0 2px 10px rgba(0,0,0,.55);
}
.landing-intro {
  font-size: 17px;
  line-height: 1.9;
  color: #9c8f74;
  margin: 0 0 40px;
  letter-spacing: .02em;
}
.landing-key-row {
  display: flex;
  flex-direction: column;
  gap: 16px;
  align-items: center;
}
.landing-key-input {
  width: 100%;
  max-width: 360px;
  padding: 13px 18px;
  background: #1f1a13;
  border: 1px solid #3a3327;
  border-radius: 6px;
  color: #e7dcbc;
  font-family: "EB Garamond", Georgia, serif;
  font-size: 16px;
  text-align: center;
  outline: none;
  transition: border-color .2s;
}
.landing-key-input:focus { border-color: #6b5f4a; }
.landing-enter-btn {
  padding: 14px 44px;
  background: #3a3327;
  border: 1px solid #4a4133;
  border-radius: 6px;
  color: #e7dcbc;
  font-family: "EB Garamond", Georgia, serif;
  font-size: 18px;
  letter-spacing: .04em;
  cursor: pointer;
  transition: background .2s, transform .05s;
}
.landing-enter-btn:hover:not(:disabled) { background: #4a4133; }
.landing-enter-btn:active:not(:disabled) { transform: translateY(1px); }
.landing-enter-btn:disabled { opacity: .5; cursor: not-allowed; }
.landing-figure {
  margin: 0 0 36px;
  padding: 0;
}
.landing-img {
  max-width: 100%;
  height: auto;
  border-radius: 6px;
  border: 1px solid #3a3327;
  box-shadow: 0 6px 22px rgba(0,0,0,.55);
  display: block;
  margin: 0 auto;                /* 居中：figure 默认左对齐，这里把 img 拉到中线 */
}
.landing-guide {
  margin: 0 auto 32px;
  max-width: 560px;
  text-align: left;
  background: rgba(31, 26, 19, 0.6);
  border: 1px solid #3a3327;
  border-radius: 6px;
  padding: 0 16px;
}
.landing-guide summary {
  cursor: pointer;
  padding: 12px 0;
  text-align: center;
  font-style: italic;
  letter-spacing: .03em;
  color: #9c8f74;
  list-style: none;            /* hide default triangle… */
}
.landing-guide summary::-webkit-details-marker { display: none; }
.landing-guide summary::before { content: "▸  "; color: #6b5f4a; }
.landing-guide[open] summary::before { content: "▾  "; }
.landing-guide summary:hover { color: #e7dcbc; }
.landing-guide ol {
  margin: 0 0 12px;
  padding-left: 20px;
  font-size: 14px;
  line-height: 1.75;
  color: #c9bda4;
}
.landing-guide ol > li { margin: 6px 0; }
.landing-guide ul {
  margin: 8px 0 4px;
  padding-left: 18px;
  list-style: none;
  font-size: 13px;
  line-height: 1.7;
  color: #9c8f74;
}
.landing-guide ul > li { margin: 3px 0; }
.landing-guide code {
  font-family: ui-monospace, "SFMono-Regular", Consolas, monospace;
  font-size: 12.5px;
  color: #e7dcbc;
  background: rgba(0,0,0,.28);
  padding: 1px 5px;
  border-radius: 3px;
  word-break: break-all;
}
.landing-guide b { color: #e7dcbc; font-weight: 700; }
.landing-guide-note {
  margin: 10px 0 14px;
  padding: 9px 12px;
  border-left: 2px solid #6b5f4a;
  font-size: 12.5px;
  font-style: italic;
  color: #9c8f74;
  line-height: 1.6;
}
.landing-error {
  margin: 18px 0 0;
  font-style: italic;
  color: #c97a5a;
  font-size: 14px;
  letter-spacing: .02em;
}
.landing-error.hidden { display: none; }
.landing-admin-link {
  display: inline-block;
  margin-top: 56px;
  font-size: 13px;
  font-style: italic;
  color: #6b5f4a;
  text-decoration: none;
  border-bottom: 1px dotted #3a3327;
  padding-bottom: 1px;
}
.landing-admin-link:hover { color: #8a7d63; }
.landing-links {
  display: flex;
  gap: 24px;
  justify-content: center;
}
.landing-links .landing-admin-link { margin-top: 56px; }

/* --- admin page ------------------------------------------------------------ */
body.admin {
  margin: 0;
  overflow: auto;
  background: #1a1611;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  font-family: "EB Garamond", Georgia, serif;
  color: #c9bda4;
}
.admin-section {
  max-width: 520px;
  width: 100%;
  padding: 48px 24px;
  text-align: center;
}
.admin-title {
  font-family: "Dancing Script", cursive;
  font-size: 38px;
  font-weight: 400;
  color: #c9bda4;
  margin: 0 0 30px;
  letter-spacing: .02em;
}
.admin-input {
  display: block;
  width: 100%;
  max-width: 320px;
  margin: 10px auto;
  padding: 10px 14px;
  background: #1f1a13;
  border: 1px solid #3a3327;
  border-radius: 4px;
  color: #e7dcbc;
  font-family: "EB Garamond", Georgia, serif;
  font-size: 15px;
  outline: none;
  transition: border-color .2s;
}
.admin-input:focus { border-color: #6b5f4a; }
.admin-btn {
  margin-top: 18px;
  padding: 12px 36px;
  background: #3a3327;
  border: 1px solid #4a4133;
  border-radius: 6px;
  color: #e7dcbc;
  font-family: "EB Garamond", Georgia, serif;
  font-size: 16px;
  letter-spacing: .03em;
  cursor: pointer;
}
.admin-btn:hover:not(:disabled) { background: #4a4133; }
.admin-btn:disabled { opacity: .5; cursor: not-allowed; }
.key-list {
  margin-top: 28px;
  text-align: left;
}
.key-empty {
  font-style: italic;
  color: #6b5f4a;
  text-align: center;
  font-size: 14px;
  padding: 16px 0;
}
.key-item {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 4px 14px;
  align-items: center;
  padding: 12px 14px;
  border-bottom: 1px solid #2a2520;
}
.key-value {
  grid-column: 1 / 2;
  color: #e7dcbc;
  font-family: ui-monospace, "SFMono-Regular", Consolas, monospace;
  font-size: 13px;
  word-break: break-all;
}
.key-meta {
  grid-column: 1 / 2;
  color: #6b5f4a;
  font-size: 12px;
}
.key-copy {
  grid-column: 2 / 3;
  grid-row: 1 / 3;
  align-self: center;
  padding: 6px 14px;
  background: transparent;
  border: 1px solid #4a4133;
  border-radius: 4px;
  color: #9c8f74;
  font-family: inherit;
  font-size: 13px;
  cursor: pointer;
}
.key-copy:hover { background: rgba(80,70,52,.4); color: #e7dcbc; }

/* --- back-to-home buttons -------------------------------------------------- */
/* Diary page: house glyph next to the ⚙ config button, top-right. */
.home-btn {
  position: fixed;
  top: 16px;
  right: 62px;
  width: 38px;
  height: 38px;
  border: 1px solid #3a3327;
  border-radius: 50%;
  background: rgba(26, 22, 16, 0.7);
  color: #8a7d63;
  font-size: 18px;
  line-height: 38px;
  text-align: center;
  text-decoration: none;
  display: block;
  z-index: 20;
  transition: background .2s, transform .2s;
}
.home-btn:hover { background: rgba(60, 50, 36, 0.9); color: #e7dcbc; }

/* Theme toggle: a round button left of the house glyph, same family. */
.theme-btn {
  position: fixed;
  top: 16px;
  right: 106px;
  width: 38px;
  height: 38px;
  border: 1px solid #3a3327;
  border-radius: 50%;
  background: rgba(26, 22, 16, 0.7);
  color: #8a7d63;
  font-size: 18px;
  line-height: 34px;            /* ◐/◑ glyph sits high in most fonts */
  text-align: center;
  cursor: pointer;
  padding: 0;
  z-index: 20;
  transition: background .2s, transform .2s;
}
.theme-btn:hover { background: rgba(60, 50, 36, 0.9); color: #e7dcbc; transform: rotate(45deg); }

/* In the white-paper ("ink") theme the dark control buttons would sit on a
   light canvas and look like dark blobs. Flip them to a light-chip variant:
   light translucent fill, deeper border, dark glyph. */
body[data-theme="ink"] .home-btn,
body[data-theme="ink"] .theme-btn,
body[data-theme="ink"] #configBtn {
  background: rgba(238, 230, 211, 0.82);
  border-color: #b9ad8f;
  color: #6b5f4a;
}
body[data-theme="ink"] .home-btn:hover,
body[data-theme="ink"] .theme-btn:hover,
body[data-theme="ink"] #configBtn:hover {
  background: rgba(225, 215, 190, 0.95);
  color: #1a1611;
}

/* Admin page: a clear pill button under the form / key list. */
.back-home-btn {
  display: inline-block;
  margin-top: 36px;
  padding: 11px 28px;
  background: transparent;
  border: 1px solid #4a4133;
  border-radius: 6px;
  color: #9c8f74;
  font-family: "EB Garamond", Georgia, serif;
  font-size: 15px;
  letter-spacing: .03em;
  text-decoration: none;
  transition: background .2s, color .2s;
}
.back-home-btn:hover { background: rgba(80,70,52,.4); color: #e7dcbc; }

/* admin key-management controls added later */
.admin-whoami {
  margin: 0 0 4px;
  padding: 0;
  font-size: 13px;
  font-style: italic;
  color: #9c8f74;
  letter-spacing: .02em;
}
.admin-whoami.hidden { display: none; }
.admin-row {
  display: flex;
  align-items: flex-end;
  justify-content: center;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 8px;
}
.admin-field {
  font-size: 13px;
  color: #9c8f74;
  display: flex;
  flex-direction: column;
  gap: 4px;
  text-align: left;
}
.admin-input.compact {
  display: block;
  margin: 0;
  width: 96px;
  text-align: center;
}
.admin-details {
  margin-top: 34px;
  border-top: 1px solid #2a2520;
  padding-top: 18px;
  text-align: left;
}
.admin-details summary {
  cursor: pointer;
  color: #9c8f74;
  font-style: italic;
  letter-spacing: .02em;
  margin-bottom: 12px;
}
.admin-details summary:hover { color: #e7dcbc; }
.admin-details .admin-input { margin-left: auto; margin-right: auto; }
.admin-details .cfg-note {
  margin: 12px auto 0;
  max-width: 360px;
  text-align: center;
}
.key-actions { grid-column: 2 / 3; grid-row: 1 / 3; display: flex; gap: 8px; align-self: center; }
.key-del {
  padding: 6px 12px;
  background: transparent;
  border: 1px solid #5a3826;
  border-radius: 4px;
  color: #c97a5a;
  font-family: inherit;
  font-size: 13px;
  cursor: pointer;
}
.key-del:hover { background: rgba(140,60,40,.25); color: #e7dcbc; }