/* CSS for this site was originally copied from Little Golem, to provide a familiar look */

/* ── Custom Properties ─────────────────────────────────────────── */
:root {
  --color-bg:        #ffffff;
  --color-text:      #000000;
  --color-link:      #5050ff;
  --color-hint:      #555;
  --color-border:    #000000;
  --color-error:     #ff0000;
  --color-heading:   navy;
  --color-even-row:  #cccccc;
  --color-odd-row:   #eeeeee;
  --color-moves-bg:  #b0b0b0;
  --color-currm-bg:  #ff8080;
  --color-seq-name:  #ffff80;
  --color-user-bg:   #ff8080;
  --color-hp-bg:     #80d080;
  --color-header:    #a0a0ff;
  --color-header-x:  #dcdcff;
  --color-note-header:   #80c080;
  --color-note-header-x: #c4e8c4;
  --color-preview:   #c0c0ff;
  --color-preview-note:  #c4e8c4;
  --color-focus:     #275ec5;
  --color-tick-hole: #cc0000;
  --color-tick-peg:  #808080;
  --color-spinner:   #808080;
  --font-stack:      Arial, Helvetica, sans-serif;
  --font-for-moves:  'Trebuchet MS', Arial, Helvetica, sans-serif;
  --font-size-xl:    2.5rem;
  --font-size-l:     1.67rem;
  --font-size-m:     0.92rem;
  --font-size-s:     0.83rem;
  --font-size-xs:    0.75rem;

  --grid-spacing: 18px;
  --grid-margin: 24px;
  --tick-size: 11px;
}

/* ── Reset & Base ──────────────────────────────────────────────── */
*, *::before, *::after {
  box-sizing: border-box;
}

body {
  font-family: var(--font-stack);
  font-size: var(--font-size-m);
  background-color: var(--color-bg);
  margin: 0;
}

body.game-page {
  display: flex;
  flex-direction: column;
  height: 100vh;
}

/* ── Page-level body margins ───────────────────────────────────── */
body.main-page,
body.about-page {
  margin-left: 25px;
  margin-right: 25px;
}

.current-page {
  font-weight: 600;
}

/* ── Typography ────────────────────────────────────────────────── */
h1, h2, h3, h4, h5, h6 {
  color: var(--color-heading);
  font-family: var(--font-stack);
}

h1 {
  font-size: var(--font-size-xl);
  text-align: center;
}

h2 {
  font-size: var(--font-size-l);
  padding: 5px;
}

p {
  font-size: var(--font-size-m);
}

.news {
  font-size: var(--font-size-s);
  text-align: left;
  font-weight: bold;
}

pre {
  font-size: var(--font-size-xs);
}

/* ── Links ─────────────────────────────────────────────────────── */
a {
  color: var(--color-link);
  text-decoration: none;
}

a:visited {
  color: var(--color-link);
}

a:hover {
  text-decoration: underline;
}

a:focus,
select:focus {
  outline: 2px solid var(--color-focus);
  outline-offset: 0;
  border-radius: 2px;
}

button,
input[type="button"],
input[type="submit"] {
  cursor: pointer;
}

/* ── Colored text/link variants ────────────────────────────────── */
.white,
.black,
.black-white-swap {
  text-decoration: none;
  font-weight: bold;
  font-size: var(--font-size-s);
}

a.white,
span.white {
  color: var(--color-bg);
}

a.black,
span.black {
  color: var(--color-text);
}

a.white:hover,
a.black:hover {
  text-decoration: underline;
}

.black-white-swap {
  background-image: linear-gradient(-14deg, var(--color-bg) 50%, var(--color-text) 50%);
  background-clip: text;
  -webkit-background-clip: text; /* Required for Chrome, Safari, and Edge */
  color: transparent;
  -webkit-text-fill-color: transparent;
}

/* ── Error / Required ──────────────────────────────────────────── */
.err {
  color: var(--color-error);
  font-weight: bold;
  margin-left: 10px;
}

.err:empty {
  display: none;
}

.text-error {
  color: var(--color-error);
}

/* ── Tables ────────────────────────────────────────────────────── */
table.main {
  border-right: 1px solid var(--color-border);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

td {
  color: var(--color-text);
  font-family: var(--font-stack);
  font-size: var(--font-size-s);
}

td.text-right  { text-align: right; }
td.text-center { text-align: center; }
td.italic      { font-style: italic; }
td.bold       { font-weight: bold; }

th {
  font-size: var(--font-size-s);
}

td.main,
th.main {
  border-left: 1px solid var(--color-border);
  padding-left: 5px;
  padding-right: 5px;
}

th.main {
  border-bottom: 1px solid var(--color-border);
}

tr.even { background-color: var(--color-even-row); }
tr.odd  { background-color: var(--color-odd-row); }

/* ── Borders & Boxes ───────────────────────────────────────────── */
.boxed {
  border: 1px solid var(--color-border);
}

.info {
  border: none;
}

/* ── Visibility utilities ──────────────────────────────────────── */
.hidden {
  display: none !important;
}

/* ── Padding utility ───────────────────────────────────────────── */
.p-5 {
  padding: 5px;
}

/* ── Game results ──────────────────────────────────────────────── */
.winner {
  font-size: 1rem;
  font-weight: normal;
  text-decoration: underline;
}

.loser {
  font-size: 1rem;
  font-weight: normal;
}

/* ── Named sequence markers ────────────────────────────────────── */
.seq-name {
  background-color: var(--color-seq-name);
  font-weight: bold;
  padding-left: 1px;
  padding-right: 1px;
  margin-left: -1px;
  margin-right: -1px;
}

/* ── Comments ──────────────────────────────────────────────── */
.comment-header,
.preview-header {
  font-size: var(--font-size-s);
  font-weight: normal;
  margin-left: -10px;
  padding-left: 10px;
  display: flex;
  align-items: baseline;
  padding-right: 6px;
}

.comment-header {
  background-color: var(--color-header);
}

.preview-header {
  background-color: var(--color-preview);
}

.preview-header-note {
  background-color: var(--color-preview-note);
}

.comment-header-text {
  flex: 1;
  white-space: nowrap;
}

.comment-header-deleted .comment-header-text {
  opacity: 0.55;
  text-decoration: line-through;
}

.comment-header-deleted {
  background-color: var(--color-header-x);
}

.comment-edit-delete-links,
.note-edit-delete-links {
  display: inline-flex;
  gap: 10px;
  margin-left: 10px;
  margin-right: 8px;
  white-space: nowrap;
  font-size: var(--font-size-xs);
}

.comment-edit-delete-links a {
  background-color: var(--color-header-x);
  border-radius: 0.5rem;
  padding: 1px 5px;
}

.note-edit-delete-links a {
  background-color: var(--color-note-header-x);
  border-radius: 0.5rem;
  padding: 1px 5px;
}

/* ── Private notes ──────────────────────────────────────────── */
.add-note-link {
  margin-top: 5px;
}

.note-header {
  font-size: var(--font-size-s);
  font-weight: normal;
  margin-left: -10px;
  padding-left: 10px;
  display: flex;
  align-items: baseline;
  padding-right: 6px;
  background-color: var(--color-note-header);
}

.note-header-text {
  flex: 1;
  white-space: nowrap;
}

.comment-buttons {
  display: flex;
  gap: 4px;
  margin-top: 4px;
  margin-bottom: 5px;
  align-items: center;
}

.comment-buttons .discard {
  margin-left: auto;
}

.comment-textarea {
  width: 100%;
  font-size: var(--font-size-s);
  font-family: var(--font-stack);
  border: 1px solid var(--color-border);
  resize: vertical;
}

#current-comments, #private-notes-container, #note-new-preview {
  font-size: var(--font-size-s);
}

/* ── Login box ─────────────────────────────────────────────────── */
.login-box {
  position: absolute;
  text-align: right;
  right: 10px;
  top: 10px;
}

.login-box label {
  font-size: var(--font-size-xs);
  text-align: right;
  float: left;
  width: 5em;
  margin-right: 0.5em;
}

.login-box input {
  /* Chrome paints autofilled values with the font size *inherited* by the
     input on first load; an explicit font-size here makes the autofill flash
     larger until the next reflow. Keep the size inherited (see .login-fields).
     Extra left padding keeps autofill from shifting/overlapping text. */
  padding-left: 8px;
}

.login-box .login-form-row {
  display: flex;
  align-items: flex-start;
  gap: 8px;
}

.login-box .login-form-row .boxed {
  padding: 1px 2px 1px 2px;
}

.login-box .login-fields {
  display: grid;
  grid-template-columns: auto auto auto;
  gap: 3px 6px;
  align-items: center;
  padding: 4px;
  /* Arrives at the inputs via inheritance, which matches Chrome's initial
     autofill paint. */
  font-size: var(--font-size-xs);
}

/* ── User, password, confirm password (profile & add_user) ──────── */
.user-form-grid {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 3px 6px;
  align-items: center;
  padding: 4px;
  font-size: var(--font-size-s);
}

.user-form-grid .boxed {
  padding: 1px 2px 1px 2px;
  width: 275px;
}

.please-register {
  border: 1px solid var(--color-border);
  padding: 4px;
  font-size: var(--font-size-s);
}

/* ── Admin page ─────────────────────────────────────────────────── */
.admin-page {
  margin: 10px;
}

.admin-page .user-info {
  width: 350px;
  height: 310px;
}

/* ── User Info Popup Modal ──────────────────────────────────────── */
/* ── Shared modal base styles ────────────────────────────────────── */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
}

.modal {
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  padding: 20px 24px;
  min-width: 300px;
  max-width: 500px;
  max-height: 80vh;
  display: flex;
  flex-direction: column;
  position: relative;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.modal-close-btn {
  position: absolute;
  top: 8px;
  right: 12px;
  font-size: 1.5rem;
  font-weight: bold;
  cursor: pointer;
  color: var(--color-text);
  line-height: 1;
}

.modal-close-btn:hover {
  color: var(--color-error);
  text-decoration: none;
}

.modal-close-btn:focus {
  outline: none;
}

/* ── Download modal ──────────────────────────────────────────────── */
.download-modal h3 {
  margin-top: 0;
  margin-bottom: 16px;
}

.download-row {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 14px;
}

.download-radio-row {
  gap: 16px;
}

.download-radio-row label {
  display: flex;
  align-items: center;
  gap: 6px;
  cursor: pointer;
}

.download-radio-row input[type="radio"] {
  margin: 0;
}

.download-radio-row label:has(input:disabled) {
  opacity: 0.5;
  cursor: not-allowed;
}

.download-actions {
  display: flex;
  gap: 8px;
  margin-top: 20px;
}

/* ── User Info modal overrides ───────────────────────────────────── */
.user-info-modal {
  padding: 20px;
}

.user-info-modal .info-scroll {
  flex: 1;
  overflow-y: auto;
  margin-top: 10px;
  white-space: pre-wrap;
  padding: 5px;
}

.user-info-modal blockquote {
  white-space: pre-wrap;
}

/* ── Help button ─────────────────────────────────────────────────── */
.help-btn {
  display: inline-flex;
  justify-content: center;
  width: 1rem;
  height: 1rem;
  border: 1px solid var(--color-border);
  border-radius: 50%;
  background-color: var(--color-bg);
  color: var(--color-text);
  font-weight: bold;
  cursor: pointer;
  line-height: 1;
  margin-left: 5px;
}

.help-btn:hover {
  background-color: var(--color-header);
}

/* ── Help modal ──────────────────────────────────────────────────── */

.help-modal h3 {
  margin-top: 0;
  margin-bottom: 12px;
}

.help-content {
  overflow-y: auto;
  font-size: var(--font-size-s);
  line-height: 1.5;
}

.help-top-p {
  margin-top: 0;
}

/* ── Blank Board modal ──────────────────────────────────────────── */

.blank-board-modal {
  min-width: 280px;
}

.blank-board-modal h3 {
  margin-top: 0;
  margin-bottom: 12px;
}

.blank-board-form-table td {
  padding: 4px 6px;
  font-size: var(--font-size-s);
  border: none;
  background: none;
}

.blank-board-hint {
  font-size: var(--font-size-xs);
  color: var(--color-hint);
  margin-left: 4px;
}

.blank-board-buttons {
  margin-top: 12px;
  display: flex;
  gap: 8px;
}

/* ── Spinner ──────────────────────────────────────────── */
.spinner {
  display: inline-block;
  width: 1em;
  height: 1em;
  margin-right: 0.3em;
  vertical-align: -0.15em;
  border: 2px solid var(--color-spinner, #999);
  border-top-color: transparent;
  border-radius: 50%;
  animation: spinner-spin 0.8s linear infinite;
}
@keyframes spinner-spin { to { transform: rotate(360deg); } }