/* ----------------------------------------------------------------------
   GitHub Dark color palette, exposed as CSS variables so it's easy to
   re-theme later without touching the rest of the stylesheet.
   ---------------------------------------------------------------------- */
:root {
  color-scheme: dark;
  --color-bg: #0d1117;
  --color-bg-secondary: #161b22;
  --color-bg-tertiary: #21262d;
  --color-border: #30363d;
  --color-text: #c9d1d9;
  --color-text-muted: #8b949e;
  --color-accent: #58a6ff;
  --color-accent-emphasis: #1f6feb;
  --color-success: #238636;
  --color-success-hover: #2ea043;
  --radius: 6px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  position: relative;
  margin: 0;
  background: var(--color-bg);
  background-image: url(z.svg);
  background-size: 400px ;
  background-position: center;
  background-repeat: no-repeat;
  color: var(--color-text);
  font-family: var(--font);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ---------------- Top bar ---------------- */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 20px;
  border-bottom: 1px solid var(--color-border);
  background: var(--color-bg-secondary);
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
}

.brand__logo {
  filter: invert(1);
  width: 28px;
  height: 28px;
}

.brand__name {
  font-size: 30px
}

.icon-btn {
  background: transparent;
  border: 1px solid transparent;
  color: var(--color-text);
  padding: 6px;
  border-radius: var(--radius);
  cursor: pointer;
  display: flex;
  align-items: center;
}

.icon-btn:hover {
  background: var(--color-bg-tertiary);
  border-color: var(--color-border);
}

/* ---------------- Side / burger menu ---------------- */
/* Fixed overlay drawer, slides in from the right. It never affects the
   document flow/layout — it sits on top of everything via position:fixed. */
.side-menu {
  position: fixed;
  top: 0;
  right: 0;
  height: 100vh;
  width: min(300px, 85vw);
  background: var(--color-bg-secondary);
  border-left: 1px solid var(--color-border);
  padding: 20px;
  box-shadow: -8px 0 24px rgba(1, 4, 9, 0.6);
  z-index: 100;
  transform: translateX(100%);
  transition: transform 0.25s ease;
}

.side-menu.is-open {
  transform: translateX(0);
}

.side-menu__overlay {
  position: fixed;
  inset: 0;
  background: rgba(1, 4, 9, 0.5);
  z-index: 90;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;
}

.side-menu__overlay.is-open {
  opacity: 1;
  pointer-events: auto;
}

.side-menu__section h3 {
  margin: 0 0 4px;
  font-size: 0.95rem;
}

.side-menu__hint {
  margin: 0;
  color: var(--color-text-muted);
  font-size: 0.85rem;
}

/* ---------------- Main layout ---------------- */
.main {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 60px 20px 30px;
  gap: 22px;
}

/* ---------------- Default engine selector ---------------- */
.default-engine {
  position: relative;
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

.default-engine__btn {
  display: flex;
  align-items: center;
  gap: 6px;
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  color: var(--color-text);
  padding: 6px 10px;
  border-radius: var(--radius);
  cursor: pointer;
  font-size: 0.9rem;
}

.default-engine__btn:hover {
  border-color: var(--color-accent);
}

.dropdown-menu {
  position: absolute;
  top: 110%;
  left: 0;
  z-index: 20;
  min-width: 180px;
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  list-style: none;
  margin: 4px 0 0;
  padding: 4px;
  box-shadow: 0 8px 24px rgba(1, 4, 9, 0.6);
}

.dropdown-menu li {
  padding: 8px 10px;
  border-radius: var(--radius);
  cursor: pointer;
  font-size: 0.9rem;
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--color-text);
}

.dropdown-menu li:hover,
.dropdown-menu li.is-active {
  background: var(--color-bg-tertiary);
}

.dropdown-menu li.is-active {
  color: var(--color-accent);
}

/* ---------------- Search box ---------------- */
.search-box {
  width: 100%;
  max-width: 560px;
}

#searchForm {
  display: flex;
  align-items: center;
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  padding: 4px 6px 4px 18px;
  transition: border-color 0.15s ease;
}

#searchForm:focus-within {
  border-color: var(--color-accent);
}

.search-box__input {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  color: var(--color-text);
  font-size: 1rem;
  padding: 10px 0;
}

.search-box__input::placeholder {
  color: var(--color-text-muted);
}

.search-box__submit {
  background: var(--color-bg);
  border: none;
  /* color: #fff; */
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  flex-shrink: 0;
}

.search-box__submit:hover {
  background: var(--color-success-hover);
}

.search-box__submit img {
  filter: invert(1);
  margin-left: 2.5px;
  width: 26px;
}

/* ---------------- Engine quick-launch list ---------------- */
.engine-list {
  align-self: self-start;
  width: 100%;
  max-width: 250px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.engine-item {
  width: 100%;
}

.engine-item__form {
  width: 100%;
}

.engine-list__btn {
  width: 100%;
  box-sizing: border-box;
  display: flex;
  align-items: center;
  /* justify-content: center; */
  gap: 6px;
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  color: var(--color-text);
  padding: 10px 14px;
  border-radius: var(--radius);
  cursor: pointer;
  font-size: 0.88rem;
}

.engine-list__btn:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.engine-item {
  display: flex;
}

.engine-item__form {
  display: flex;
}

.engine-item__input {
  width: 100%;
  box-sizing: border-box;
  background: var(--color-bg-tertiary);
  border: 1px solid var(--color-accent);
  color: var(--color-text);
  padding: 10px 14px;
  border-radius: var(--radius);
  font-size: 0.88rem;
  outline: none;
}

.engine-item__input::placeholder {
  color: var(--color-text-muted);
}

.engine-icon {
  width: 16px;
  height: 16px;
  object-fit: contain;
  flex-shrink: 0;
}

/* ---------------- Footer ---------------- */
.footer {
  text-align: center;
  padding: 14px;
  font-size: 0.78rem;
  color: var(--color-text-muted);
  border-top: 1px solid var(--color-border);
}

/* ---------------- Utility ---------------- */
[hidden] {
  display: none !important;
}

a {
  color: var(--color-text);
}

a:link,
a:visited,
a:hover,
a:active {
  color: var(--color-text);
}