/* ============================================================
   Theme: Nintendo DS — scoped to [data-theme="nds"]
   The original DS firmware menu: pale grid "graph paper"
   backdrop, white tiles with thick rounded charcoal borders,
   glossy cyan selection, and calendar pastels (red Sunday,
   blue Saturday).
   ============================================================ */

[data-theme="nds"] {
  --d-cyan: #1ba1c4;
  --d-cyan-lt: #8fdcef;
  --d-cyan-dk: #1685a3;
  --d-ink: #3a4750;
  --d-line: #4a565e; /* thick tile border */
  --d-paper: #eef1f3; /* grid backdrop */
  --d-grid: #dbe1e5; /* grid lines */
  --d-red: #d4506a; /* Sunday */
  --d-blue: #3f7fd0; /* Saturday */
  font-family: "Trebuchet MS", "Segoe UI", Tahoma, sans-serif;
  font-size: 14px;
  color: var(--d-ink);
}

/* pale graph-paper background like the DS menu canvas */
[data-theme="nds"] body {
  background-color: var(--d-paper);
  background-image: linear-gradient(var(--d-grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--d-grid) 1px, transparent 1px);
  background-size: 22px 22px;
  background-attachment: fixed;
}

/* the window is the menu canvas */
[data-theme="nds"] .rb-window {
  background: transparent;
  border: none;
  border-radius: 0;
  padding: 8px;
  box-shadow: none;
}

/* top status strip: User name, clock, date, battery */
[data-theme="nds"] .rb-titlebar {
  height: 34px;
  padding: 0 14px;
  border-radius: 12px;
  background: linear-gradient(180deg, #fbfdfe, #e6ecef);
  border: 2px solid var(--d-line);
  color: var(--d-ink);
  font-weight: bold;
  letter-spacing: 0.3px;
  text-shadow: none;
}
[data-theme="nds"] .rb-titlebar-icon {
  width: 16px;
  height: 12px;
  border-radius: 2px;
  background: linear-gradient(180deg, #b7f0a0, #7fc964);
  box-shadow: inset 0 0 0 1.5px var(--d-line);
}
[data-theme="nds"] .rb-titlebar-buttons {
  display: none;
}

/* menubar = white rounded tile holding the chunky touch buttons */
[data-theme="nds"] .rb-menubar {
  margin-top: 8px;
  padding: 10px 12px;
  border-radius: 14px;
  background: #ffffff;
  border: 2px solid var(--d-line);
}
[data-theme="nds"] .rb-menu-link {
  text-decoration: none;
  padding: 6px 16px;
  border-radius: 18px;
  color: var(--d-ink);
  font-weight: bold;
  background: linear-gradient(180deg, #ffffff, #e3ebef);
  border: 2px solid var(--d-line);
  transition: all 0.12s;
}
[data-theme="nds"] .rb-menu-link:hover {
  background: linear-gradient(180deg, #6fd0e8, var(--d-cyan));
  color: #fff;
  border-color: var(--d-cyan-dk);
  text-shadow: 0 1px 1px rgba(0, 0, 0, 0.25);
}
[data-theme="nds"] .rb-switcher-label {
  font-weight: bold;
  font-size: 12px;
  color: var(--d-cyan-dk);
}
[data-theme="nds"] .rb-switcher-select {
  font: 13px "Trebuchet MS", sans-serif;
  border: 2px solid var(--d-line);
  border-radius: 16px;
  padding: 4px 12px;
  background: #fff;
  color: var(--d-ink);
}

/* the main content = big white touch-screen tile */
[data-theme="nds"] .rb-content {
  background: #ffffff;
  margin: 8px 0;
  padding: 22px 24px;
  border-radius: 16px;
  border: 2px solid var(--d-line);
  box-shadow: inset 0 0 0 4px #f3f7f9;
}

[data-theme="nds"] .rb-statusbar {
  padding: 6px 12px;
  font-size: 11px;
  color: #71808a;
}

/* bottom strip = rounded tile dock holding the launch buttons */
[data-theme="nds"] .rb-taskbar {
  height: 40px;
  margin-top: 8px;
  border-radius: 14px;
  background: linear-gradient(180deg, #fbfdfe, #e6ecef);
  border: 2px solid var(--d-line);
}
[data-theme="nds"] .rb-start {
  display: flex;
  align-items: center;
  gap: 7px;
  height: 28px;
  padding: 0 16px;
  border: 2px solid var(--d-cyan-dk);
  border-radius: 16px;
  background: linear-gradient(180deg, #6fd0e8, var(--d-cyan));
  color: #fff;
  font: bold 13px "Trebuchet MS", sans-serif;
  cursor: pointer;
  text-shadow: 0 1px 1px rgba(0, 0, 0, 0.25);
}
[data-theme="nds"] .rb-start-logo {
  width: 13px;
  height: 13px;
  border-radius: 4px;
  background: linear-gradient(180deg, #fff, var(--d-cyan-lt));
}
[data-theme="nds"] .rb-task {
  display: flex;
  align-items: center;
  gap: 7px;
  height: 28px;
  padding: 0 14px;
  border: 2px solid var(--d-line);
  border-radius: 16px;
  background: linear-gradient(180deg, #ffffff, #e3ebef);
  color: var(--d-ink);
  font-weight: bold;
  font-size: 13px;
  cursor: default;
}
[data-theme="nds"] .rb-task-active {
  background: linear-gradient(180deg, #6fd0e8, var(--d-cyan));
  color: #fff;
  border-color: var(--d-cyan-dk);
}
[data-theme="nds"] .rb-task-icon {
  width: 11px;
  height: 11px;
  border-radius: 3px;
  background: var(--d-cyan-lt);
}
[data-theme="nds"] .rb-clock {
  color: var(--d-ink);
  font-weight: bold;
  font-size: 13px;
  padding: 0 14px;
}

[data-theme="nds"] .rb-page-title {
  margin: 0 0 4px;
  font-size: 26px;
  font-weight: bold;
  color: var(--d-cyan-dk);
}
[data-theme="nds"] .rb-page-sub {
  margin: 0 0 18px;
  color: #71808a;
}

/* post cards = white menu tiles with the signature thick border */
[data-theme="nds"] .rb-post-card {
  border: 2px solid var(--d-line);
  border-radius: 14px;
  padding: 16px 18px;
  background: #ffffff;
  box-shadow: inset 0 0 0 3px #f3f7f9;
  transition: box-shadow 0.18s, transform 0.18s;
}
[data-theme="nds"] .rb-post-card:hover {
  box-shadow: inset 0 0 0 3px #e0f3f9, 0 5px 16px rgba(27, 161, 196, 0.28);
  transform: translateY(-2px);
  border-color: var(--d-cyan-dk);
}
[data-theme="nds"] .rb-post-card-title a {
  color: var(--d-cyan-dk);
  text-decoration: none;
  font-weight: bold;
}
[data-theme="nds"] .rb-post-date {
  font-size: 12px;
  color: #93a0a8;
}
[data-theme="nds"] .rb-tag {
  font-size: 11px;
  background: #e4f4f9;
  border: 1.5px solid var(--d-cyan-lt);
  border-radius: 12px;
  padding: 1px 9px;
  color: var(--d-cyan-dk);
  font-weight: bold;
}
[data-theme="nds"] .rb-readmore,
[data-theme="nds"] .rb-back {
  color: var(--d-cyan-dk);
  text-decoration: none;
  font-weight: bold;
  font-size: 13px;
}
[data-theme="nds"] .rb-back {
  display: inline-block;
  margin-bottom: 12px;
}
[data-theme="nds"] .rb-article-title {
  color: var(--d-cyan-dk);
  font-weight: bold;
  margin: 0 0 8px;
}
[data-theme="nds"] .rb-prose {
  line-height: 1.7;
}
[data-theme="nds"] .rb-prose a {
  color: var(--d-cyan-dk);
}
[data-theme="nds"] .rb-prose code {
  background: #e4f4f9;
  border: 1px solid var(--d-cyan-lt);
  border-radius: 6px;
  padding: 0 5px;
  font-family: "Courier New", monospace;
}
[data-theme="nds"] .rb-prose blockquote {
  border-left: 4px solid var(--d-cyan);
  margin: 12px 0;
  padding: 6px 14px;
  background: #eef7fa;
  border-radius: 0 10px 10px 0;
}
[data-theme="nds"] .rb-prose h1,
[data-theme="nds"] .rb-prose h2,
[data-theme="nds"] .rb-prose h3 {
  color: var(--d-cyan-dk);
}