/* Morgen Commander's site: the app's look (Norton Commander blue, double frames, a function-key bar) with
   readable text. Three themes, like the app: Norton (default), Dark and Light. */

:root,
:root[data-theme="norton"] {
  --bg: #0000aa;
  --panel: #0000aa;
  --text: #55ffff;
  --strong: #ffffff;
  --head: #ffff55;
  --dim: #8fd8ff;
  --frame: #55ffff;
  --bar: #00aaaa;
  --bar-text: #000000;
  --key-num: #ffffff;
  --link: #ffff55;
  --button: #00aaaa;
  --button-text: #000000;
  --shadow: rgba(0, 0, 0, 0.45);
  --screen: #000000;
}

:root[data-theme="dark"] {
  --bg: #161616;
  --panel: #1e1e1e;
  --text: #d4d4d4;
  --strong: #ffffff;
  --head: #4fc1ff;
  --dim: #9a9a9a;
  --frame: #5a5a5a;
  --bar: #264f78;
  --bar-text: #ffffff;
  --key-num: #9cdcfe;
  --link: #4fc1ff;
  --button: #264f78;
  --button-text: #ffffff;
  --shadow: rgba(0, 0, 0, 0.6);
  --screen: #0c0c0c;
}

:root[data-theme="light"] {
  --bg: #eef2f7;
  --panel: #ffffff;
  --text: #1e1e1e;
  --strong: #000000;
  --head: #0000aa;
  --dim: #555555;
  --frame: #0000aa;
  --bar: #c8ddf2;
  --bar-text: #000000;
  --key-num: #0000aa;
  --link: #0000aa;
  --button: #0000aa;
  --button-text: #ffffff;
  --shadow: rgba(0, 0, 40, 0.18);
  --screen: #dfe6ee;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 17px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

.mono, h1, h2, h3, nav, .bar, .keys, code, kbd, .tag, .button, .caption {
  font-family: ui-monospace, "Cascadia Mono", "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
}

a { color: var(--link); }
a:hover { text-decoration-thickness: 2px; }

h1, h2, h3 { color: var(--head); line-height: 1.25; }
h1 { font-size: clamp(1.9rem, 5vw, 3rem); margin: 0.2em 0 0.3em; }
h2 { font-size: 1.5rem; margin: 0 0 0.6em; }
h3 { font-size: 1.1rem; margin: 1.2em 0 0.3em; }
strong { color: var(--strong); }
code, kbd { color: var(--strong); font-size: 0.92em; }
kbd { border: 1px solid var(--frame); padding: 0 0.3em; border-radius: 3px; white-space: nowrap; }

/* ---- the menu bar */
.menubar {
  position: sticky; top: 0; z-index: 10;
  background: var(--bar); color: var(--bar-text);
  display: flex; align-items: center; gap: 0.2rem 1.2rem; flex-wrap: wrap;
  padding: 0.35rem 1rem;
  box-shadow: 0 2px 8px var(--shadow);
}
.menubar .brand { display: flex; align-items: center; gap: 0.5rem; font-weight: 700; color: var(--bar-text); text-decoration: none; margin-right: auto; }
.menubar .brand img { width: 26px; height: 26px; }
.menubar nav { display: flex; gap: 1.1rem; flex-wrap: wrap; }
.menubar nav a { color: var(--bar-text); text-decoration: none; padding: 0.1rem 0.2rem; }
.menubar nav a[aria-current="page"], .menubar nav a:hover { background: var(--bar-text); color: var(--bar); }
.menubar { font-size: 0.95rem; }
.theme-switch { font: inherit; white-space: nowrap; background: transparent; color: var(--bar-text); border: 1px solid var(--bar-text); border-radius: 3px; padding: 0.1rem 0.4rem; cursor: pointer; }

/* ---- panels with Norton's double frame */
main { max-width: 1180px; margin: 0 auto; padding: 1.5rem 1rem 3rem; }
.panel {
  background: var(--panel);
  border: 4px double var(--frame);
  padding: 1.4rem clamp(1rem, 3vw, 2rem);
  margin: 1.6rem 0;
  position: relative;
}
.panel > .title {
  position: absolute; top: -0.85em; left: 50%; transform: translateX(-50%);
  background: var(--bar); color: var(--bar-text);
  padding: 0 0.6em; white-space: nowrap; font-weight: 700;
  font-family: ui-monospace, "Cascadia Mono", "SF Mono", Menlo, Consolas, monospace;
}

/* ---- the hero */
.hero { text-align: center; padding-top: 1rem; }
.hero img.logo { width: 96px; height: 96px; }
.tagline { font-size: clamp(1.1rem, 2.4vw, 1.4rem); color: var(--strong); max-width: 40em; margin: 0 auto 1.2rem; }
.lede { max-width: 46em; margin: 0 auto; }

.window {
  margin: 1.8rem auto 0.5rem; max-width: 1100px;
  background: var(--screen);
  border: 1px solid var(--frame);
  box-shadow: 0 12px 40px var(--shadow);
}
.window img { display: block; width: 100%; height: auto; }

/* ---- buttons */
.buttons { display: flex; gap: 0.8rem; justify-content: center; flex-wrap: wrap; margin: 1.4rem 0 0.4rem; }
.button {
  display: inline-block; text-decoration: none; font-weight: 700;
  background: var(--button); color: var(--button-text);
  padding: 0.65rem 1.2rem; border: 2px solid var(--button); border-radius: 4px;
}
.button.ghost { background: transparent; color: var(--link); border-color: var(--link); }
.button:hover { filter: brightness(1.12); }
.small { font-size: 0.9rem; color: var(--dim); }

/* ---- grids */
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 1.2rem; }
.card { border: 1px solid var(--frame); padding: 1rem 1.1rem; background: var(--panel); }
.card h3 { margin-top: 0; }
.card p { margin: 0.3rem 0 0; }

.downloads { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 1.2rem; }
.download { border: 1px solid var(--frame); padding: 1rem 1.1rem; display: flex; flex-direction: column; gap: 0.5rem; }
.download.yours { border-width: 3px; }
.download .button { text-align: center; }
.download .tag { font-size: 0.8rem; color: var(--bar-text); background: var(--bar); align-self: flex-start; padding: 0 0.4em; }

/* ---- feature sections: text beside a screenshot */
.feature { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.25fr); gap: 1.6rem; align-items: start; }
.feature.flip { grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr); }
.feature.flip .shot { order: -1; }
.feature ul { padding-left: 1.2rem; margin: 0.4rem 0; }
.feature li { margin: 0.25rem 0; }
.shot { margin: 0; }
.shot img { width: 100%; height: auto; display: block; border: 1px solid var(--frame); box-shadow: 0 6px 22px var(--shadow); cursor: zoom-in; background: var(--screen); }
.shot figcaption, .caption { font-size: 0.85rem; color: var(--dim); margin-top: 0.4rem; }
.shots { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 1.2rem; }
.shots .shot img { aspect-ratio: 16 / 10; object-fit: cover; object-position: top left; }
@media (max-width: 820px) {
  .feature, .feature.flip { grid-template-columns: 1fr; }
  .feature.flip .shot { order: 0; }
}

/* ---- tables (keys, folders) */
table { border-collapse: collapse; width: 100%; margin: 0.6rem 0; }
th, td { text-align: left; padding: 0.35rem 0.6rem; border-bottom: 1px solid var(--frame); vertical-align: top; }
th { color: var(--head); font-family: ui-monospace, "Cascadia Mono", "SF Mono", Menlo, Consolas, monospace; font-weight: 700; }
td:first-child { white-space: nowrap; color: var(--strong); font-family: ui-monospace, "Cascadia Mono", "SF Mono", Menlo, Consolas, monospace; }

/* ---- the function-key bar at the bottom */
.keys {
  display: flex; flex-wrap: wrap; background: var(--screen);
  border-top: 1px solid var(--frame);
}
.keys a {
  flex: 1 1 8rem; display: flex; text-decoration: none; color: var(--bar-text);
  padding: 0.15rem 0.2rem 0.15rem 0; min-width: 8rem;
}
.keys a b { color: var(--key-num); background: var(--screen); padding: 0 0.3em 0 0.5em; }
.keys a span { background: var(--bar); flex: 1; padding: 0 0.4em; }
.keys a:hover span { filter: brightness(1.15); }
footer .note { text-align: center; font-size: 0.85rem; color: var(--dim); padding: 0.8rem 1rem 1.2rem; background: var(--screen); }
footer .note a { color: var(--dim); }

/* ---- zoomed screenshots */
dialog.zoom { padding: 0; border: 1px solid var(--frame); background: var(--screen); max-width: 96vw; max-height: 94vh; }
dialog.zoom::backdrop { background: rgba(0, 0, 0, 0.75); }
dialog.zoom img { display: block; max-width: 96vw; max-height: 88vh; width: auto; height: auto; }
dialog.zoom p { margin: 0; padding: 0.4rem 0.8rem; color: var(--dim); font-size: 0.9rem; }

@media (max-width: 900px) {
  .menubar { gap: 0.2rem 0.8rem; padding: 0.35rem 0.6rem; }
  .menubar .brand span { display: none; }
  .menubar nav { gap: 0.6rem; }
}
@media (max-width: 520px) {
  .menubar nav a[href$="#download"] { display: none; }
  .menubar { font-size: 0.85rem; }
  .menubar nav { gap: 0.45rem; }
  body { font-size: 16px; }
}
[hidden] { display: none !important; }

.skip { position: absolute; left: -999px; }
.skip:focus { left: 1rem; top: 0.5rem; z-index: 20; background: var(--bar); color: var(--bar-text); padding: 0.3rem 0.6rem; }