/* APRSdroid 9M2PJU Mod — GitHub Pages landing
 * Palette derived from the app icon:
 *   navy bg #0D182D, surface #1C2F51, steel #2C4B62,
 *   amber accent #CEB619, cool grey text #ADB2BF, muted #64819B
 */

:root {
  --bg: #0D182D;
  --surface: #1C2F51;
  --surface-2: #2C4B62;
  --accent: #CEB619;
  --accent-dim: #a08f12;
  --text: #ADB2BF;
  --text-bright: #E8EAEF;
  --text-dim: #9DA4B0;
  --muted: #64819B;
  --olive: #699066;
  --error: #B04A3A;
  --radius: 10px;
  --maxw: 1100px;
  --maxw-wide: 1280px;
  --nav-h: 60px;
  --safe-top: env(safe-area-inset-top, 0px);
  --safe-bottom: env(safe-area-inset-bottom, 0px);
  --safe-left: env(safe-area-inset-left, 0px);
  --safe-right: env(safe-area-inset-right, 0px);
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  scroll-padding-top: calc(var(--nav-h) + 12px);
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  font-size: clamp(15px, 0.4vw + 0.85rem, 17px);
  overflow-x: hidden;
  padding-left: var(--safe-left);
  padding-right: var(--safe-right);
}

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

h1, h2, h3 { color: var(--text-bright); font-weight: 600; line-height: 1.25; }
h2 { font-size: clamp(1.4rem, 3vw, 2rem); margin-top: 0; }

/* ---------- Top navigation ---------- */
.topnav {
  position: sticky;
  top: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: var(--nav-h);
  padding: 0.5rem clamp(0.75rem, 2vw, 1.5rem);
  padding-top: calc(0.5rem + var(--safe-top));
  background: rgba(13, 24, 45, 0.92);
  backdrop-filter: saturate(140%) blur(10px);
  -webkit-backdrop-filter: saturate(140%) blur(10px);
  border-bottom: 1px solid var(--surface);
  transition: background 0.2s, box-shadow 0.2s;
}
.topnav.scrolled {
  background: rgba(8, 16, 31, 0.96);
  box-shadow: 0 4px 18px rgba(0, 0, 0, 0.35);
}
.topnav-brand {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-weight: 600;
  color: var(--text-bright);
  font-size: clamp(0.95rem, 2vw, 1.1rem);
  white-space: nowrap;
}
.topnav-brand:hover { text-decoration: none; }
.topnav-brand .mod { color: var(--accent); }
.topnav-logo { border-radius: 6px; flex-shrink: 0; }
.topnav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--surface-2);
  color: var(--text-bright);
  font-size: 1.25rem;
  line-height: 1;
  padding: 0.35rem 0.55rem;
  border-radius: 8px;
  cursor: pointer;
}
.topnav-links {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.35rem 0.5rem;
  justify-content: flex-end;
}
.topnav-links a {
  color: var(--text);
  font-size: 0.92rem;
  padding: 0.4rem 0.65rem;
  border-radius: 8px;
  white-space: nowrap;
  transition: background 0.15s, color 0.15s;
}
.topnav-links a:hover {
  background: rgba(28, 47, 81, 0.6);
  color: var(--text-bright);
  text-decoration: none;
}
.topnav-links a.topnav-cta {
  background: var(--accent);
  color: var(--bg) !important;
  font-weight: 600;
  margin-left: 0.35rem;
}
.topnav-links a.topnav-cta:hover { background: #e6c81f; }

/* ---------- Hero ---------- */
.hero {
  background: linear-gradient(180deg, #08101f 0%, var(--bg) 100%);
  border-bottom: 1px solid var(--surface);
  padding: clamp(2.5rem, 8vh, 5rem) clamp(1rem, 4vw, 2rem) clamp(2rem, 5vh, 3rem);
  text-align: center;
  padding-top: calc(clamp(2.5rem, 8vh, 5rem) + var(--safe-top));
}
.hero-inner { max-width: var(--maxw); margin: 0 auto; }
.hero-logo {
  width: clamp(80px, 15vw, 128px);
  height: clamp(80px, 15vw, 128px);
  border-radius: 24px;
  box-shadow: 0 8px 32px rgba(0,0,0,0.5);
  margin-bottom: 1.5rem;
}
.hero h1 {
  font-size: clamp(1.6rem, 5vw, 2.4rem);
  margin: 0 0 0.5rem;
  letter-spacing: -0.02em;
}
.hero h1 .mod { color: var(--accent); }
.tagline { font-size: clamp(0.95rem, 2.5vw, 1.15rem); color: var(--muted); margin: 0 0 1.5rem; }
.hero-badges {
  display: flex; flex-wrap: wrap; gap: 0.5rem; justify-content: center;
  margin-bottom: 2rem;
}
.badge {
  font-size: 0.8rem;
  padding: 0.25rem 0.7rem;
  border: 1px solid var(--surface-2);
  border-radius: 999px;
  color: var(--muted);
  background: rgba(28,47,81,0.4);
  white-space: nowrap;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-block;
  padding: 0.7rem 1.4rem;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 1rem;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background 0.15s, transform 0.05s;
  text-decoration: none !important;
}
.btn:active { transform: translateY(1px); }
.btn-primary {
  background: var(--accent);
  color: var(--bg) !important;
}
.btn-primary:hover { background: #e6c81f; text-decoration: none !important; }
.btn-lg { padding: 0.9rem 2rem; font-size: 1.1rem; }
.btn-secondary {
  background: var(--surface);
  color: var(--text-bright) !important;
  border-color: var(--surface-2);
}
.btn-secondary:hover { background: var(--surface-2); text-decoration: none !important; }

/* ---------- Sections ---------- */
.section {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: clamp(2rem, 5vh, 3rem) clamp(1rem, 4vw, 1.5rem);
}
.section.alt {
  background: rgba(28,47,81,0.25);
  max-width: none;
  padding-left: max(1rem, calc((100vw - var(--maxw)) / 2 + 1.5rem), var(--safe-left));
  padding-right: max(1rem, calc((100vw - var(--maxw)) / 2 + 1.5rem), var(--safe-right));
  border-top: 1px solid var(--surface);
  border-bottom: 1px solid var(--surface);
}
.section.alt > * { max-width: var(--maxw); margin-left: auto; margin-right: auto; }
.section-sub { color: var(--muted); margin-top: -0.5rem; margin-bottom: 1.5rem; }

/* ---------- Download ---------- */
.download-status {
  padding: 1rem; text-align: center; color: var(--muted);
}
.spinner {
  display: inline-block; width: 1rem; height: 1rem;
  border: 2px solid var(--surface-2); border-top-color: var(--accent);
  border-radius: 50%; animation: spin 0.8s linear infinite;
  vertical-align: -0.2rem; margin-right: 0.5rem;
}
@keyframes spin { to { transform: rotate(360deg); } }

.release-card {
  background: var(--surface);
  border: 1px solid var(--surface-2);
  border-radius: var(--radius);
  padding: clamp(1rem, 2vw, 1.75rem);
  margin-bottom: 2rem;
}
.release-head {
  display: flex; justify-content: space-between; align-items: baseline;
  flex-wrap: wrap; gap: 0.5rem; margin-bottom: 1rem;
}
.release-head h3 { margin: 0; }
.release-date { color: var(--muted); font-size: 0.9rem; }

.assets { display: flex; flex-direction: column; gap: 0.75rem; margin-bottom: 1.25rem; }
.asset-row {
  display: flex; align-items: center; gap: 1rem;
  flex-wrap: wrap;
  padding: 0.75rem 1rem;
  background: var(--bg);
  border: 1px solid var(--surface-2);
  border-radius: 8px;
}
.asset-row .asset-name { flex: 1 1 auto; color: var(--text-bright); font-family: monospace; font-size: 0.95rem; word-break: break-all; }
.asset-row .asset-size { color: var(--muted); font-size: 0.85rem; white-space: nowrap; }
.asset-row .asset-count { color: var(--accent); font-size: 0.85rem; white-space: nowrap; }

.release-meta {
  display: flex; gap: 2rem; flex-wrap: wrap;
  padding-top: 1rem; border-top: 1px solid var(--surface-2);
}
.counter { display: flex; flex-direction: column; }
.counter-num { font-size: 1.6rem; font-weight: 700; color: var(--accent); }
.counter-label { font-size: 0.8rem; color: var(--muted); }

.releases-h3 { font-size: 1.2rem; margin-top: 2rem; }
.releases-list { display: flex; flex-direction: column; gap: 0.75rem; }
.release-item {
  background: var(--surface);
  border: 1px solid var(--surface-2);
  border-radius: 8px;
  padding: 1rem 1.25rem;
  display: flex; justify-content: space-between; align-items: center;
  flex-wrap: wrap; gap: 0.75rem;
}
.release-item .ri-name { color: var(--text-bright); font-weight: 600; }
.release-item .ri-meta { color: var(--muted); font-size: 0.85rem; }
.release-item .ri-count { color: var(--accent); font-size: 0.85rem; }

.note {
  margin-top: 2rem; padding: 1rem 1.25rem;
  background: rgba(176,74,58,0.12);
  border-left: 3px solid var(--error);
  border-radius: 4px;
  font-size: 0.9rem;
}
.note strong { color: var(--text-bright); }

/* ---------- Features ---------- */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(240px, 100%), 1fr));
  gap: clamp(0.75rem, 2vw, 1.25rem);
}
.feature {
  background: var(--surface);
  border: 1px solid var(--surface-2);
  border-radius: var(--radius);
  padding: 1.25rem;
  transition: transform 0.15s, border-color 0.15s;
}
.feature:hover {
  transform: translateY(-2px);
  border-color: var(--accent-dim);
}
.feature h3 { font-size: 1.05rem; margin: 0 0 0.5rem; color: var(--accent); }
.feature p { margin: 0; font-size: 0.92rem; }
.features-subheading {
  font-size: 1.2rem;
  margin: 2rem 0 0;
  padding-top: 1.5rem;
  border-top: 1px solid var(--surface-2);
  color: var(--text-bright);
}

/* ---------- What's new / info groups ---------- */
.whatsnew-group {
  background: var(--surface);
  border: 1px solid var(--surface-2);
  border-radius: var(--radius);
  padding: clamp(1rem, 2vw, 1.5rem);
  margin-bottom: 1rem;
}
.whatsnew-group h3 {
  font-size: 1.1rem;
  margin: 0 0 0.75rem;
  color: var(--accent);
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--surface-2);
}
.whatsnew-group ul {
  margin: 0;
  padding-left: 1.25rem;
  list-style: none;
}
.whatsnew-group li {
  position: relative;
  margin-bottom: 0.5rem;
  padding-left: 0.5rem;
  line-height: 1.5;
  font-size: 0.93rem;
}
.whatsnew-group li::before {
  content: "▸";
  position: absolute;
  left: -1rem;
  color: var(--accent);
}
.whatsnew-group code {
  background: var(--bg);
  padding: 0.1rem 0.35rem;
  border-radius: 4px;
  font-size: 0.85rem;
  color: var(--accent);
}
.whatsnew-group ol {
  margin: 0;
  padding-left: 1.25rem;
}
.whatsnew-group ol li {
  margin-bottom: 0.5rem;
  padding-left: 0.25rem;
  line-height: 1.5;
  font-size: 0.93rem;
}
.whatsnew-group ol li::before {
  content: none;
}
.whatsnew-group p {
  margin: 0 0 0.75rem;
  line-height: 1.5;
  font-size: 0.93rem;
}

/* Two-column layout for info groups on wide screens */
@media (min-width: 820px) {
  .section .whatsnew-grid,
  .section.alt .whatsnew-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(320px, 100%), 1fr));
    gap: 1rem;
  }
  .section .whatsnew-grid .whatsnew-group,
  .section.alt .whatsnew-grid .whatsnew-group {
    margin-bottom: 0;
  }
}

/* Map tools table — horizontally scrollable on small screens */
.map-tools-wrap {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  margin: 0 0 1rem;
  border-radius: var(--radius);
}
.map-tools {
  width: 100%;
  min-width: 480px;
  border-collapse: collapse;
  font-size: 0.9rem;
}
.map-tools th {
  text-align: left;
  padding: 0.6rem 0.75rem;
  background: var(--bg);
  color: var(--accent);
  font-weight: 600;
  border-bottom: 2px solid var(--surface-2);
}
.map-tools td {
  padding: 0.6rem 0.75rem;
  border-bottom: 1px solid var(--surface-2);
  vertical-align: top;
  line-height: 1.45;
}
.map-tools tr:last-child td {
  border-bottom: none;
}
.map-tools a {
  color: var(--accent);
  font-weight: 600;
}
.whatsnew-note {
  margin-top: 0.75rem;
  padding: 0.75rem 1rem;
  background: rgba(206,182,25,0.1);
  border-left: 3px solid var(--accent);
  border-radius: 4px;
  font-size: 0.88rem;
  color: var(--text);
}
.whatsnew-note strong { color: var(--text-bright); }

/* ---------- Splash ---------- */
.splash-wrap { text-align: center; }
.splash-img {
  max-height: 480px;
  border-radius: 16px;
  box-shadow: 0 12px 40px rgba(0,0,0,0.6);
  border: 1px solid var(--surface-2);
}

/* ---------- Screenshots ---------- */
.screenshots-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(180px, 100%), 1fr));
  gap: clamp(12px, 2vw, 20px);
  margin: 24px 0;
}
.screenshots-grid figure {
  margin: 0;
  text-align: center;
}
.screenshots-grid img {
  width: 100%;
  height: auto;
  max-width: 280px;
  border-radius: 12px;
  box-shadow: 0 8px 28px rgba(0,0,0,0.5);
  border: 1px solid var(--surface-2);
  transition: transform 0.2s ease;
}
.screenshots-grid img:hover {
  transform: scale(1.03);
}
.screenshots-grid figcaption {
  margin-top: 8px;
  font-size: 0.9rem;
  color: var(--text-dim);
}

/* ---------- Build ---------- */
pre {
  background: var(--bg);
  border: 1px solid var(--surface-2);
  border-radius: var(--radius);
  padding: 1rem 1.25rem;
  overflow-x: auto;
  font-size: 0.9rem;
}
code { font-family: "SF Mono", Menlo, Consolas, monospace; color: var(--text-bright); }

/* ---------- Footer ---------- */
footer {
  text-align: center;
  padding: 2rem 1.5rem;
  padding-bottom: calc(2rem + var(--safe-bottom));
  border-top: 1px solid var(--surface);
  color: var(--muted);
  font-size: 0.9rem;
}
footer a { color: var(--text); }
.footer-meta { margin-top: 0.5rem; font-size: 0.85rem; }

/* ============================================================
   Responsive — tablet & mobile
   ============================================================ */
@media (max-width: 820px) {
  .topnav-toggle { display: inline-block; }
  .topnav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    flex-wrap: nowrap;
    gap: 0;
    padding: 0.5rem clamp(0.75rem, 2vw, 1.5rem) 0.75rem;
    padding-bottom: calc(0.75rem + var(--safe-bottom));
    background: rgba(8, 16, 31, 0.98);
    border-bottom: 1px solid var(--surface);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.4);
  }
  .topnav-links.open { display: flex; }
  .topnav-links a {
    padding: 0.65rem 0.75rem;
    border-radius: 8px;
    font-size: 1rem;
  }
  .topnav-links a.topnav-cta {
    margin: 0.35rem 0 0;
    text-align: center;
  }
}

@media (max-width: 600px) {
  :root { --nav-h: 54px; }
  .hero { padding: 2.5rem 1rem 2rem; }
  .hero h1 { font-size: 1.8rem; }
  .tagline { font-size: 1rem; }
  .hero-logo { width: 96px; height: 96px; }
  .section { padding: 2rem 1rem; }
  h2 { font-size: 1.4rem; }
  .release-meta { gap: 1.25rem; }
  .counter-num { font-size: 1.3rem; }
  .features-grid { grid-template-columns: 1fr; }
  .screenshots-grid { grid-template-columns: repeat(2, 1fr); gap: 10px; }
  .screenshots-grid img { max-width: 100%; }
}

@media (max-width: 420px) {
  .screenshots-grid { grid-template-columns: 1fr; }
  .asset-row { gap: 0.5rem; padding: 0.6rem 0.75rem; }
  .asset-row .asset-name { font-size: 0.85rem; }
}

/* Map tools table → cards on narrow screens */
@media (max-width: 600px) {
  .map-tools-wrap { overflow: visible; }
  .map-tools { min-width: 0; }
  .map-tools thead { display: none; }
  .map-tools, .map-tools tbody, .map-tools tr, .map-tools td {
    display: block;
    width: 100%;
  }
  .map-tools tr {
    background: var(--bg);
    border: 1px solid var(--surface-2);
    border-radius: 8px;
    padding: 0.5rem 0.75rem;
    margin-bottom: 0.6rem;
  }
  .map-tools tr:last-child { margin-bottom: 0; }
  .map-tools td {
    padding: 0.35rem 0;
    border-bottom: 1px solid rgba(44, 75, 98, 0.4);
  }
  .map-tools td:last-child { border-bottom: none; }
  .map-tools td::before {
    content: attr(data-label) " — ";
    color: var(--muted);
    font-weight: 600;
    font-size: 0.78rem;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    margin-right: 0.25rem;
  }
}

/* ============================================================
   Donation popup
   ============================================================ */
.donation-popup-overlay {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(0, 0, 0, 0.75);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  padding: 1rem;
  padding-top: calc(1rem + var(--safe-top));
  padding-bottom: calc(1rem + var(--safe-bottom));
  padding-left: calc(1rem + var(--safe-left));
  padding-right: calc(1rem + var(--safe-right));
  box-sizing: border-box;
  overflow-y: auto;
  overflow-x: hidden;
  -webkit-overflow-scrolling: touch;
}
.donation-popup {
  background: #13203A;
  border: 1px solid var(--surface-2);
  border-radius: 16px;
  padding: 2rem;
  max-width: 380px;
  width: 100%;
  max-height: 100%;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  text-align: center;
  position: relative;
  box-shadow: 0 8px 32px rgba(0,0,0,0.5);
  animation: donationFadeIn 0.3s ease;
  margin: auto;
}
@keyframes donationFadeIn {
  from { opacity: 0; transform: scale(0.95); }
  to { opacity: 1; transform: scale(1); }
}
.donation-popup h2 {
  margin: 0 0 0.5rem 0;
  font-size: 1.25rem;
  color: var(--text-bright);
}
.donation-sub {
  color: var(--text-dim);
  font-size: 0.9rem;
  margin: 0 0 1.5rem 0;
}
.donation-close {
  position: absolute;
  top: 0.5rem;
  right: 0.75rem;
  background: none;
  border: none;
  color: var(--text-dim);
  font-size: 1.75rem;
  cursor: pointer;
  line-height: 1;
  padding: 0.25rem;
  z-index: 1;
}
.donation-close:hover {
  color: var(--text-bright);
}
.donation-qr-wrap {
  margin: 0 auto 1.5rem;
  display: flex;
  flex-direction: column;
  align-items: center;
}
.donation-qr {
  width: 220px;
  height: 220px;
  border-radius: 12px;
  background: #fff;
  padding: 8px;
  box-sizing: border-box;
}
.donation-qr-caption {
  color: var(--text-dim);
  font-size: 0.8rem;
  margin: 0.75rem 0 0 0;
}
.donation-buttons {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-bottom: 1rem;
}
.donation-buttons .btn {
  display: block;
  padding: 0.7rem 1rem;
  border-radius: 8px;
  font-weight: 600;
  text-decoration: none;
  text-align: center;
}
.donation-auto-close {
  color: var(--text-dim);
  font-size: 0.8rem;
  margin: 0;
}
@media (max-width: 480px) {
  .donation-popup { padding: 1.25rem; max-width: 100%; }
  .donation-qr { width: 180px; height: 180px; }
  .donation-popup h2 { font-size: 1.1rem; }
  .donation-sub { font-size: 0.85rem; }
  .donation-buttons .btn { padding: 0.7rem 0.85rem; font-size: 0.95rem; }
}
@media (max-width: 360px) {
  .donation-popup { padding: 1rem; }
  .donation-qr { width: 150px; height: 150px; }
  .donation-qr-caption { font-size: 0.72rem; }
}
@media (max-height: 640px) {
  .donation-popup {
    padding: 1.25rem;
    align-self: stretch;
    max-height: 100%;
    border-radius: 0;
  }
  .donation-qr { width: 160px; height: 160px; }
  .donation-sub { margin-bottom: 1rem; }
  .donation-qr-wrap { margin-bottom: 1rem; }
}