/* ────────────────────────────────────────────────────────────────
   KV Apps — minimalist technical stylesheet (pkg.khoavo.myds.me)
   Light, quiet, monospace accents. Built to be easy to read.
   ──────────────────────────────────────────────────────────────── */
:root {
  --bg: #f7f7f5;
  --card: #ffffff;
  --ink: #16181d;
  --ink-2: #5b6472;
  --ink-3: #8a93a3;
  --line: #e5e7eb;
  --line-2: #d3d7dd;
  --accent: #0a6cff;
  --accent-ink: #0047b3;
  --ok: #16a34a;
  --warn: #d97706;
  --mono: ui-monospace, "SF Mono", "JetBrains Mono", "Cascadia Code",
          "Roboto Mono", Consolas, Menlo, monospace;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
          "Helvetica Neue", Arial, "Noto Sans", sans-serif;
  --radius: 8px;
  --maxw: 860px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  padding:
    env(safe-area-inset-top, 0px)
    env(safe-area-inset-right, 0px)
    env(safe-area-inset-bottom, 0px)
    env(safe-area-inset-left, 0px);
  color: var(--ink);
  font: 16px/1.65 var(--sans);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

::selection { background: var(--accent); color: #fff; }

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

code, kbd, .mono {
  font-family: var(--mono);
  font-size: 0.88em;
}

/* ── layout ──────────────────────────────────────────────────── */
.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 22px; }

/* ── header ──────────────────────────────────────────────────── */
.topbar {
  position: sticky; top: 0; z-index: 20;
  padding-top: env(safe-area-inset-top, 0px);
  background: rgba(247, 247, 245, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.topbar-inner {
  max-width: var(--maxw); margin: 0 auto; padding: 12px 22px;
  display: flex; align-items: center; gap: 22px;
}
.brand {
  font-family: var(--mono);
  font-size: 15px; font-weight: 700; letter-spacing: 0.04em;
  color: var(--ink); white-space: nowrap;
}
.brand b { color: var(--accent); font-weight: 700; }
.brand:hover { text-decoration: none; }
.topnav { margin-left: auto; display: flex; align-items: center; gap: 18px; }
.topnav a {
  color: var(--ink-2); font-size: 14px; font-weight: 500;
}
.topnav a:hover { color: var(--ink); text-decoration: none; }

.langbtn {
  font-family: var(--mono); font-size: 12px; font-weight: 700;
  color: var(--ink-2);
  background: none; border: 1px solid var(--line-2);
  border-radius: 5px; padding: 4px 9px; cursor: pointer;
  letter-spacing: 0.05em;
}
.langbtn:hover { border-color: var(--accent); color: var(--accent); }

/* ── hero ────────────────────────────────────────────────────── */
.hero { padding: 64px 0 46px; }
.kicker {
  display: inline-block;
  font-family: var(--mono); font-size: 12px; font-weight: 600;
  letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--ink-3);
  border: 1px solid var(--line-2);
  border-radius: 999px;
  padding: 4px 12px; margin-bottom: 22px;
}
h1 {
  font-size: clamp(30px, 4.6vw, 46px);
  line-height: 1.12; letter-spacing: -0.02em;
  margin: 0 0 16px; font-weight: 750;
}
.hero p.lead {
  font-size: 17px; color: var(--ink-2);
  max-width: 620px; margin: 0 0 28px;
}
.hero p.lead b { color: var(--ink); }

/* source pill */
.srcrow { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; }
.srcpill {
  font-family: var(--mono); font-size: 14px;
  background: var(--card);
  border: 1px solid var(--line-2);
  border-radius: var(--radius);
  padding: 9px 14px;
  display: inline-flex; align-items: center; gap: 9px;
  user-select: all;
}
.srcpill .scheme { color: var(--ink-3); }
.copybtn {
  font-family: var(--mono); font-size: 13px; font-weight: 600;
  color: #fff; background: var(--accent);
  border: none; border-radius: var(--radius);
  padding: 9px 16px; cursor: pointer;
  transition: background 0.15s;
}
.copybtn:hover { background: var(--accent-ink); }
.copybtn:active { transform: translateY(1px); }
.copied { background: var(--ok) !important; }

/* terminal-style block */
.term {
  margin-top: 30px;
  background: #16181d; color: #d7dbe2;
  border-radius: var(--radius);
  font-family: var(--mono); font-size: 13px; line-height: 1.9;
  padding: 16px 18px; overflow-x: auto;
}
.term .t-title {
  color: #6b7280; font-size: 11px; letter-spacing: 0.1em;
  text-transform: uppercase; margin-bottom: 8px; display: block;
}
.term .p { color: #4ade80; }
.term .c { color: #93c5fd; }
.term .g { color: #94a3b8; }

/* ── sections ────────────────────────────────────────────────── */
section.block { padding: 34px 0 40px; border-top: 1px solid var(--line); }
.sec-head { margin-bottom: 22px; }
.sec-head .num {
  font-family: var(--mono); font-size: 12px; font-weight: 700;
  color: var(--accent); letter-spacing: 0.12em;
}
.sec-head h2 { margin: 4px 0 6px; font-size: 24px; letter-spacing: -0.01em; }
.sec-head p { margin: 0; color: var(--ink-2); font-size: 15px; }

/* install steps */
ol.steps { margin: 0; padding: 0; list-style: none; counter-reset: st; }
ol.steps li {
  counter-increment: st;
  display: grid; grid-template-columns: 44px 1fr;
  gap: 14px; align-items: start;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
}
ol.steps li:last-child { border-bottom: none; }
ol.steps li::before {
  content: counter(st, decimal-leading-zero);
  font-family: var(--mono); font-size: 13px; font-weight: 700;
  color: var(--accent);
  border: 1px solid var(--line-2); border-radius: 6px;
  width: 34px; height: 34px;
  display: grid; place-items: center;
  margin-top: 2px;
}
ol.steps h3 { margin: 0 0 3px; font-size: 16px; }
ol.steps p { margin: 0; color: var(--ink-2); font-size: 14.5px; }
ol.steps code {
  background: #eef0f3; border: 1px solid var(--line);
  border-radius: 4px; padding: 1px 6px; color: var(--ink);
}

/* ── package table ───────────────────────────────────────────── */
.tblwrap { border: 1px solid var(--line-2); border-radius: var(--radius); overflow: hidden; }
table.pkg { width: 100%; border-collapse: collapse; background: var(--card); }
table.pkg th {
  text-align: left; font-family: var(--mono); font-size: 11.5px;
  font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--ink-3);
  padding: 11px 16px; border-bottom: 1px solid var(--line-2);
  background: #fbfbfa;
}
table.pkg td { padding: 13px 16px; border-bottom: 1px solid var(--line); vertical-align: top; }
table.pkg tr:last-child td { border-bottom: none; }
table.pkg tr:hover td { background: #fafbff; }
table.pkg .pname { font-weight: 650; font-size: 15px; }
table.pkg .pver { font-family: var(--mono); font-size: 12.5px; color: var(--ink-2); white-space: nowrap; }
table.pkg .pdesc { color: var(--ink-2); font-size: 14px; max-width: 460px; }
table.pkg .plink { font-family: var(--mono); font-size: 12.5px; white-space: nowrap; }
.note { color: var(--ink-3); font-size: 13px; margin-top: 12px; }
.note a { color: var(--accent); }

/* ── install guide screenshots ────────────────────────────── */
.guide { margin-top: 26px; display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.guide-item { display: flex; flex-direction: column; gap: 10px; }
.guide-img {
  border: 1px solid var(--line-2); border-radius: var(--radius);
  overflow: hidden; background: #fff; line-height: 0;
}
.guide-img img { width: 100%; height: auto; display: block; }
.guide-cap { display: flex; align-items: flex-start; gap: 10px; font-size: 14px; color: var(--ink-2); line-height: 1.55; }
.guide-cap code {
  background: #eef0f3; border: 1px solid var(--line);
  border-radius: 4px; padding: 1px 6px; color: var(--ink);
}
.guide-n {
  flex-shrink: 0; width: 22px; height: 22px; border-radius: 50%;
  background: var(--accent); color: #fff;
  display: grid; place-items: center;
  font-family: var(--mono); font-size: 12px; font-weight: 700;
  margin-top: 1px;
}
@media (max-width: 768px) {
  .guide { grid-template-columns: 1fr; gap: 20px; }
}

/* ── feedback ────────────────────────────────────────────── */
.fbgrid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 26px;
  align-items: start;
}
.fbform {
  background: var(--card);
  border: 1px solid var(--line-2); border-radius: var(--radius);
  padding: 22px 24px;
}
.fbform .fbrow { margin-bottom: 14px; }
.fbform label { display: block; font-size: 13px; font-weight: 600; color: var(--ink-2); margin-bottom: 6px; }
.fbform input[type=text], .fbform select, .fbform textarea {
  width: 100%; padding: 10px 12px; font-size: 14px;
  border: 1px solid var(--line-2); border-radius: 6px;
  background: #fff; color: var(--ink); outline: none;
  box-sizing: border-box; font-family: inherit;
}
.fbform input:focus, .fbform select:focus, .fbform textarea:focus {
  border-color: var(--accent); box-shadow: 0 0 0 3px rgba(10,108,255,.12);
}
.fbform .copybtn { margin-top: 4px; }
.captcha-line { display: flex; align-items: center; gap: 8px; }
.captcha-q {
  font-family: var(--mono); font-size: 15px; font-weight: 600;
  background: #f4f5f7; border: 1px solid var(--line-2);
  border-radius: 6px; padding: 9px 12px; min-width: 78px;
  text-align: center; white-space: nowrap; color: var(--ink);
}
.captcha-line input[type=text] { flex: 1; min-width: 60px; }
.captcha-refresh {
  border: 1px solid var(--line-2); background: #fff; color: var(--ink-2);
  border-radius: 6px; width: 40px; height: 40px; font-size: 17px;
  cursor: pointer; line-height: 1; flex-shrink: 0;
}
.captcha-refresh:hover { border-color: var(--accent); color: var(--accent); }
.fbnote { margin-top: 12px; font-size: 13.5px; min-height: 20px; }
.fbnote.ok { color: var(--ok); }
.fbnote.err { color: var(--danger); }
.stars { display: flex; gap: 4px; font-size: 22px; cursor: pointer; user-select: none; }
.stars span { color: var(--line-2); transition: color .15s; }
.stars span.on { color: #f59e0b; }
.fblist h3 { font-size: 15px; margin: 0 0 12px; letter-spacing: .02em; }
.fbitem {
  background: var(--card); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 12px 16px; margin-bottom: 10px;
}
.fbitem .fbhead { display: flex; flex-wrap: wrap; gap: 8px; align-items: baseline; margin-bottom: 4px; }
.fbitem .fbname { font-weight: 650; font-size: 14px; }
.fbitem .fbpkg { font-family: var(--mono); font-size: 11.5px; color: var(--accent-ink); background: #eaf2ff; border-radius: 4px; padding: 1px 7px; }
.fbitem .fbdate { font-family: var(--mono); font-size: 11.5px; color: var(--ink-3); margin-left: auto; }
.fbitem .fbrating { color: #f59e0b; font-size: 13px; letter-spacing: 1px; }
.fbitem .fbmsg { color: var(--ink-2); font-size: 14px; margin: 0; white-space: pre-wrap; }

@media (max-width: 900px) {
  /* stack earlier on tablets so the form keeps full width */
  .fbgrid { grid-template-columns: 1fr; gap: 20px; }
  .fblist { margin-top: 4px; }
}

@media (max-width: 720px) {
  .fbgrid { grid-template-columns: 1fr; }
}

/* phones: touch-friendly feedback */
@media (max-width: 640px) {
  .fbform { padding: 18px 16px; }
  .fbform .fbrow { margin-bottom: 12px; }
  .fbform input[type=text], .fbform select, .fbform textarea {
    padding: 12px; font-size: 16px;   /* 16px prevents iOS zoom-on-focus */
  }
  .fbform .copybtn { width: 100%; padding: 13px; font-size: 15px; }
  .stars { font-size: 28px; gap: 6px; }   /* bigger tap targets */
  .stars span { padding: 2px 3px; }
  .fbitem { padding: 12px 14px; }
  .fbitem .fbhead { gap: 6px 8px; }
  .fbitem .fbdate { margin-left: 0; flex-basis: 100%; }  /* date on its own line */
  .fbitem .fbmsg { font-size: 14px; }
}

/* very narrow phones */
@media (max-width: 400px) {
  .fbform label { font-size: 12.5px; }
  .fbitem .fbpkg { font-size: 11px; }
}

/* ── donate ──────────────────────────────────────────────────── */
.donatebox {
  display: flex; flex-wrap: wrap; gap: 30px; align-items: center;
  background: var(--card);
  border: 1px solid var(--line-2); border-radius: var(--radius);
  padding: 26px 28px;
}
.donatebox img.qr {
  width: 220px; height: auto;
  border: 1px solid var(--line); border-radius: 6px;
  background: #fff; padding: 6px;
}
.donatebox .dinfo { flex: 1; min-width: 240px; }
.donatebox h3 { margin: 0 0 8px; font-size: 18px; }
.donatebox p { margin: 0 0 8px; color: var(--ink-2); font-size: 14.5px; }
.donatebox .bank {
  font-family: var(--mono); font-size: 13px;
  background: #f4f5f7; border: 1px solid var(--line);
  border-radius: 6px; padding: 8px 12px; margin-top: 4px;
}
.donatebox .bank b { color: var(--ink); }

/* ── footer ──────────────────────────────────────────────────── */
footer {
  border-top: 1px solid var(--line);
  margin-top: 30px; padding: 26px 0 40px;
  color: var(--ink-3); font-size: 13px;
  font-family: var(--mono);
}
footer .wrap { display: flex; flex-wrap: wrap; gap: 8px 18px; justify-content: space-between; }
footer a { color: var(--ink-2); }
footer a:hover { color: var(--accent); }

/* toast */
.toast {
  position: fixed; left: 50%;
  bottom: calc(26px + env(safe-area-inset-bottom, 0px));
  transform: translateX(-50%) translateY(16px);
  background: #16181d; color: #fff;
  font-family: var(--mono); font-size: 13px;
  padding: 10px 18px; border-radius: 8px;
  opacity: 0; pointer-events: none; transition: all 0.25s;
  z-index: 50;
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

/* ── package detail page ─────────────────────────────────────── */
.detailhead {
  display: flex; flex-wrap: wrap; gap: 24px; align-items: flex-start;
  padding: 30px 0 10px;
}
.detailhead img { width: 96px; height: 96px; border-radius: 14px; }
.detailhead h1 { margin: 0 0 8px; font-size: 30px; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; margin: 4px 0 12px; }
.chip {
  font-family: var(--mono); font-size: 12px; font-weight: 600;
  color: var(--ink-2);
  border: 1px solid var(--line-2); border-radius: 5px;
  padding: 3px 9px; background: var(--card);
}
.chip.accent { color: var(--accent); border-color: var(--accent); }
.detaildesc { color: var(--ink-2); font-size: 15px; max-width: 640px; margin: 0; }

.history { border: 1px solid var(--line-2); border-radius: var(--radius); background: var(--card); }
.history h2 {
  font-size: 15px; letter-spacing: 0.04em; text-transform: uppercase;
  font-family: var(--mono); color: var(--ink-3);
  margin: 0; padding: 14px 18px; border-bottom: 1px solid var(--line);
}
.history ul { list-style: none; margin: 0; padding: 0; }
.history li {
  display: flex; flex-wrap: wrap; gap: 6px 14px; align-items: baseline;
  padding: 13px 18px; border-bottom: 1px solid var(--line); font-size: 14.5px;
}
.history li:last-child { border-bottom: none; }
.history .v { font-family: var(--mono); font-weight: 700; color: var(--ink); min-width: 90px; }

/* empty / loading states */
.muted { color: var(--ink-3); font-size: 14px; padding: 20px; text-align: center; }

/* ── responsive ──────────────────────────────────────────────── */

/* small tablets & phones */
@media (max-width: 768px) {
  .topnav { gap: 14px; flex-wrap: wrap; }
  .topnav a { font-size: 13.5px; }
  h1 { font-size: clamp(26px, 6.5vw, 36px); }
  .hero { padding: 44px 0 32px; }
  .detailhead img { width: 72px; height: 72px; }
}

@media (max-width: 640px) {
  /* keep the nav links visible — wrap them under the brand instead of
     hiding them (hiding = no way to reach sections on a phone) */
  .topbar-inner { flex-wrap: wrap; gap: 6px 14px; padding: 10px 16px; }
  .topnav {
    flex-basis: 100%;
    justify-content: flex-start;
    gap: 14px;
    overflow-x: auto;
    white-space: nowrap;
    padding-bottom: 4px;
    -webkit-overflow-scrolling: touch;
  }
  .topnav a { font-size: 13px; padding: 8px 2px; }  /* comfortable tap targets */
  .langbtn { padding: 7px 12px; }

  .wrap { padding: 0 16px; }
  .hero { padding: 36px 0 26px; }
  h1 { font-size: clamp(24px, 7vw, 32px); letter-spacing: -0.015em; }
  .hero p.lead { font-size: 15.5px; }

  /* source pill + copy button stack full-width */
  .srcrow { flex-direction: column; align-items: stretch; gap: 8px; }
  .srcpill { justify-content: center; font-size: 13px; }
  .copybtn { width: 100%; }

  /* terminal block: smaller text, no horizontal page scroll */
  .term { font-size: 12px; line-height: 1.75; margin-top: 22px; overflow-x: auto; }

  /* steps: tighter */
  ol.steps li { grid-template-columns: 36px 1fr; gap: 12px; padding: 12px 0; }
  ol.steps li::before { width: 30px; height: 30px; font-size: 12px; }
  ol.steps p { font-size: 14px; }
  .sec-head h2 { font-size: 21px; }

  /* ── package table: allow horizontal scroll on narrow screens ── */
  .tblwrap { overflow-x: auto; }
  table.pkg { min-width: 460px; }   /* keeps the 4 columns readable; scrolls */
  table.pkg th, table.pkg td { padding: 10px 12px; }
  /* feedback + donate: single column, full width */
  .fbgrid { grid-template-columns: 1fr; gap: 18px; }
  .fbform { padding: 18px 16px; }
  .donatebox { flex-direction: column; align-items: flex-start; padding: 18px; }
  .donatebox img.qr { width: 180px; }

  /* detail page */
  .detailhead { gap: 16px; padding: 22px 0 8px; }
  .detailhead img { width: 64px; height: 64px; }
  .detailhead h1 { font-size: 24px; }
  .history li { padding: 11px 14px; }

  footer { padding: 22px 0 32px; }
  footer .wrap { gap: 6px 14px; }
}

/* phones: package table becomes stacked cards (no sideways scrolling) */
@media (max-width: 560px) {
  .tblwrap { overflow: visible; border: none; background: transparent; }
  table.pkg { min-width: 0; border-collapse: separate; border-spacing: 0 10px; }
  table.pkg thead { display: none; }
  table.pkg tbody { display: block; }
  table.pkg tr {
    display: block;
    position: relative;
    background: var(--card);
    border: 1px solid var(--line-2);
    border-radius: var(--radius);
    padding: 4px 14px 12px;
  }
  table.pkg td { display: block; border: none; padding: 8px 0 0; }
  table.pkg tr:hover td { background: transparent; }
  table.pkg .pname { font-size: 16px; padding-right: 44px; }
  table.pkg .pver { display: inline-block; }
  table.pkg .pdesc { font-size: 13.5px; color: var(--ink-2); }
  table.pkg .plink {
    position: absolute; top: 12px; right: 12px; padding: 0;
  }
  table.pkg .plink a {
    display: grid; place-items: center;
    width: 34px; height: 34px;
    border-radius: 50%;
    background: #eaf2ff; color: var(--accent);
    font-size: 17px; font-weight: 700;
  }
}

/* very narrow phones (< 400px) */
@media (max-width: 400px) {
  .brand { font-size: 14px; }
  .term { font-size: 11px; }
  table.pkg { min-width: 420px; }
}

/* manual-download SPK button */
a.spkbtn {
  display: inline-block;
  background: var(--accent);
  color: #fff;
  font-size: 12.5px;
  font-weight: 700;
  text-decoration: none;
  padding: 7px 13px;
  border-radius: 999px;
  margin-right: 8px;
  white-space: nowrap;
}
a.spkbtn:hover { opacity: .88; }
@media (max-width: 600px) {
  table.pkg .plink { position: static; }
  table.pkg .plink a.spkbtn { margin-top: 6px; }
}

/* ── YouTube NO ADS guide banner ────────────────────────── */
.guide-banner {
  margin-top: 18px;
  background: var(--card);
  border: 1px solid var(--line-2);
  border-radius: var(--radius);
  padding: 16px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  box-shadow: 0 1px 4px rgba(0,0,0,0.03);
  transition: border-color 0.15s, box-shadow 0.15s;
}
.guide-banner:hover {
  border-color: #f87171;
  box-shadow: 0 4px 14px rgba(225,29,72,0.06);
}
.guide-banner-main {
  display: flex;
  align-items: center;
  gap: 14px;
  flex: 1;
  min-width: 0;
}
.guide-banner-icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: #fef2f2;
  border: 1px solid #fecaca;
  color: #e11d48;
  display: grid;
  place-items: center;
  flex-shrink: 0;
}
.guide-banner-title {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-weight: 700;
  font-size: 15.5px;
  color: var(--ink);
}
.guide-badge {
  font-family: var(--mono);
  font-size: 10.5px;
  font-weight: 700;
  background: #fee2e2;
  color: #dc2626;
  border: 1px solid #fca5a5;
  border-radius: 999px;
  padding: 2px 8px;
  letter-spacing: 0.04em;
}
.guide-badge-sub {
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 600;
  color: var(--ink-3);
  background: #f3f4f6;
  border-radius: 4px;
  padding: 1px 6px;
}
.guide-banner-desc {
  color: var(--ink-2);
  font-size: 13.5px;
  margin-top: 3px;
  line-height: 1.5;
}
.guide-banner-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: #e11d48;
  color: #fff !important;
  font-family: var(--sans);
  font-size: 13px;
  font-weight: 650;
  text-decoration: none !important;
  padding: 9px 18px;
  border-radius: 6px;
  white-space: nowrap;
  flex-shrink: 0;
  transition: background 0.15s, transform 0.1s;
}
.guide-banner-btn:hover {
  background: #be123c;
}
.guide-banner-btn:active {
  transform: translateY(1px);
}
@media (max-width: 640px) {
  .guide-banner {
    flex-direction: column;
    align-items: stretch;
    padding: 16px;
  }
  .guide-banner-btn {
    text-align: center;
    justify-content: center;
    width: 100%;
    padding: 11px;
  }
}