/* ──────────────────────────────────────────────────────────────────────────────
   Maximum Trainer — Website Stylesheet
   Dark theme, responsive, accessible.
────────────────────────────────────────────────────────────────────────────── */

/* ── Reset & Custom Properties ───────────────────────────────────────────── */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --clr-bg:           #121212;
  --clr-bg-alt:       #1a1a1a;
  --clr-surface:      #1e1e1e;
  --clr-surface-high: #282828;
  --clr-border:       #333333;
  --clr-accent:       #2196f3;
  --clr-accent-light: #42a5f5;
  --clr-accent-glow:  rgba(33, 150, 243, 0.25);
  --clr-text:         rgba(255, 255, 255, 0.87);
  --clr-text-muted:   rgba(255, 255, 255, 0.60);
  --clr-heading:      rgba(255, 255, 255, 0.95);
  --clr-link:         #64b5f6;
  --clr-code-bg:      #0a0a0a;

  --font-sans:  'Segoe UI', system-ui, -apple-system, sans-serif;
  --font-mono:  'Consolas', 'JetBrains Mono', 'Fira Code', monospace;

  --radius-sm:  4px;
  --radius-md:  8px;
  --radius-lg:  16px;

  --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.45);
  --shadow-glow: 0 0 0 2px var(--clr-accent-glow);

  --max-w:      1100px;
  --nav-h:      64px;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--nav-h);
}

body {
  background-color: var(--clr-bg);
  color: var(--clr-text);
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

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

img {
  display: block;
  max-width: 100%;
  height: auto;
}

code, pre {
  font-family: var(--font-mono);
}

/* ── Utility ──────────────────────────────────────────────────────────────── */
.container {
  width: 100%;
  max-width: var(--max-w);
  margin-inline: auto;
  padding-inline: 1.5rem;
}

.section {
  padding-block: 5rem;
}

.section--dark {
  background-color: var(--clr-bg-alt);
}

.section-title {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 700;
  color: var(--clr-heading);
  text-align: center;
  margin-bottom: 1rem;
}

.section-subtitle {
  text-align: center;
  color: var(--clr-text-muted);
  max-width: 700px;
  margin-inline: auto;
  margin-bottom: 3rem;
  font-size: 1.05rem;
}

.subsection-title {
  font-size: 1.3rem;
  font-weight: 600;
  color: var(--clr-heading);
  margin-bottom: 1rem;
  text-align: center;
}

/* ── Buttons ──────────────────────────────────────────────────────────────── */
.btn {
  display: inline-block;
  padding: 0.65em 1.5em;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 0.95rem;
  letter-spacing: 0.01em;
  cursor: pointer;
  transition: background-color 0.2s, box-shadow 0.2s, color 0.2s;
  text-decoration: none;
  border: 2px solid transparent;
}

.btn-primary {
  background-color: var(--clr-accent);
  color: #fff;
  border-color: var(--clr-accent);
}
.btn-primary:hover {
  background-color: var(--clr-accent-light);
  border-color: var(--clr-accent-light);
  box-shadow: var(--shadow-glow);
  text-decoration: none;
}

.btn-outline {
  background-color: transparent;
  color: var(--clr-text);
  border-color: var(--clr-border);
}
.btn-outline:hover {
  border-color: var(--clr-accent);
  color: var(--clr-accent);
  text-decoration: none;
}

/* ── Navigation ───────────────────────────────────────────────────────────── */
.nav-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: rgba(15, 17, 23, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--clr-border);
  height: var(--nav-h);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: var(--max-w);
  margin-inline: auto;
  padding-inline: 1.5rem;
  gap: 1rem;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--clr-heading);
  text-decoration: none;
  flex-shrink: 0;
}
.nav-logo:hover {
  text-decoration: none;
  color: var(--clr-accent-light);
}
.nav-logo img {
  display: block;
  height: 36px;
  width: auto;
  filter: hue-rotate(195deg) saturate(1.3) brightness(1.1);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.75rem;
  list-style: none;
}
.nav-links a {
  color: var(--clr-text-muted);
  font-size: 0.9rem;
  font-weight: 500;
  transition: color 0.2s;
}
.nav-links a:hover {
  color: var(--clr-heading);
  text-decoration: none;
}

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--clr-border);
  color: var(--clr-text);
  font-size: 1.25rem;
  padding: 0.3em 0.55em;
  border-radius: var(--radius-sm);
  cursor: pointer;
}

/* ── Hero ─────────────────────────────────────────────────────────────────── */
.hero {
  position: relative;
  min-height: calc(100vh - var(--nav-h));
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  overflow: hidden;
  padding: 4rem 1.5rem;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 70% 55% at 50% 0%, rgba(33, 150, 243, 0.18) 0%, transparent 70%),
    linear-gradient(180deg, #121212 0%, #161616 100%);
  z-index: 0;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 780px;
}

.hero-icon {
  width: 96px;
  height: 96px;
  object-fit: contain;
  margin-inline: auto;
  margin-bottom: 1.5rem;
  filter: drop-shadow(0 0 18px var(--clr-accent-glow)) hue-rotate(195deg) saturate(1.3) brightness(1.1);
}

.hero h1 {
  font-size: clamp(2.5rem, 7vw, 4.5rem);
  font-weight: 800;
  color: var(--clr-heading);
  line-height: 1.1;
  margin-bottom: 1rem;
  letter-spacing: -0.02em;
}

.hero-tagline {
  font-size: clamp(1rem, 2.5vw, 1.25rem);
  color: var(--clr-text-muted);
  max-width: 600px;
  margin-inline: auto;
  margin-bottom: 2rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: center;
  margin-bottom: 2rem;
}

.hero-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  justify-content: center;
}

.badge {
  background-color: var(--clr-surface);
  border: 1px solid var(--clr-border);
  color: var(--clr-text-muted);
  font-size: 0.78rem;
  font-weight: 600;
  padding: 0.2em 0.75em;
  border-radius: 999px;
  letter-spacing: 0.03em;
}

/* ── Story ────────────────────────────────────────────────────────────────── */
.story-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  margin-top: 3rem;
}

.story-card {
  background-color: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  box-shadow: var(--shadow-card);
  transition: border-color 0.2s;
}
.story-card:hover {
  border-color: var(--clr-accent);
}

.story-card--rebirth {
  border-color: rgba(224, 95, 30, 0.4);
}

.story-card-icon {
  font-size: 2rem;
  margin-bottom: 0.75rem;
}

.story-card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--clr-heading);
  margin-bottom: 0.75rem;
}

.story-card p {
  color: var(--clr-text-muted);
  font-size: 0.95rem;
}
.story-card p strong {
  color: var(--clr-text);
}

/* ── Features ─────────────────────────────────────────────────────────────── */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.25rem;
  margin-top: 3rem;
  margin-bottom: 3.5rem;
}

.feature-card {
  background-color: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  transition: border-color 0.2s, transform 0.2s;
}
.feature-card:hover {
  border-color: var(--clr-accent);
  transform: translateY(-2px);
}

.feature-icon {
  font-size: 1.75rem;
  min-height: 2rem;
  margin-bottom: 0.75rem;
  display: flex;
  align-items: center;
}

.feature-img {
  width: 28px;
  height: 28px;
  object-fit: contain;
  filter: brightness(1.8) saturate(0.6);
}

.feature-card h3 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--clr-heading);
  margin-bottom: 0.5rem;
}

.feature-card p {
  font-size: 0.9rem;
  color: var(--clr-text-muted);
  line-height: 1.65;
}
.feature-card p strong {
  color: var(--clr-text);
}

/* ── Specs Table ──────────────────────────────────────────────────────────── */
.specs-table-wrap {
  overflow-x: auto;
}

.specs-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
  color: var(--clr-text);
}

.specs-table thead tr {
  background-color: var(--clr-surface-high);
}

.specs-table th {
  text-align: left;
  padding: 0.75rem 1rem;
  color: var(--clr-heading);
  font-weight: 600;
  border-bottom: 2px solid var(--clr-border);
}

.specs-table td {
  padding: 0.65rem 1rem;
  border-bottom: 1px solid var(--clr-border);
}

.specs-table tr:nth-child(even) td {
  background-color: rgba(255, 255, 255, 0.025);
}

.specs-table code {
  background-color: var(--clr-code-bg);
  border: 1px solid var(--clr-border);
  padding: 0.1em 0.4em;
  border-radius: var(--radius-sm);
  font-size: 0.85em;
}

/* ── Gallery ──────────────────────────────────────────────────────────────── */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 1.25rem;
  margin-top: 0;
  margin-bottom: 2rem;
}

.gallery-item {
  background-color: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: border-color 0.2s, transform 0.2s;
  cursor: pointer;
}
.gallery-item:hover {
  border-color: var(--clr-accent);
  transform: translateY(-3px);
}

.gallery-item img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  object-position: top left;
  background-color: #1c1c2e;
  display: block;
}

.gallery-caption {
  padding: 0.6rem 0.9rem;
  font-size: 0.82rem;
  color: var(--clr-text-muted);
  text-align: center;
}

.gallery-youtube {
  text-align: center;
  color: var(--clr-text-muted);
  font-size: 0.95rem;
}

/* ── Download ─────────────────────────────────────────────────────────────── */
.download-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  margin-top: 3rem;
  margin-bottom: 2rem;
}

.download-card {
  background-color: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  box-shadow: var(--shadow-card);
  transition: border-color 0.2s;
}
.download-card:hover {
  border-color: var(--clr-accent);
}

.download-icon {
  font-size: 2.25rem;
}

.download-card h3 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--clr-heading);
}

.download-desc {
  font-size: 0.9rem;
  color: var(--clr-text-muted);
}

.download-deps {
  list-style: none;
  font-size: 0.85rem;
  color: var(--clr-text-muted);
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}
.download-deps li::before {
  content: '▸ ';
  color: var(--clr-accent);
}

.download-card .btn {
  align-self: flex-start;
}

/* Version badge injected dynamically by JS once a release is published */
.version-badge {
  display: inline-block;
  background: rgba(255, 255, 255, 0.18);
  border-radius: 4px;
  padding: 0 0.35em;
  margin-right: 0.5em;
  font-size: 0.78em;
  font-weight: 700;
  vertical-align: middle;
  letter-spacing: 0.03em;
}

/* Build details accordion */
.build-details {
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-sm);
  overflow: hidden;
  font-size: 0.85rem;
}

.build-details summary {
  padding: 0.5rem 0.75rem;
  cursor: pointer;
  color: var(--clr-text-muted);
  user-select: none;
  background-color: var(--clr-surface-high);
  list-style: none;
}
.build-details summary::-webkit-details-marker { display: none; }
.build-details summary::before {
  content: '▶ ';
  font-size: 0.7em;
  transition: transform 0.2s;
}
.build-details[open] summary::before {
  content: '▼ ';
}
.build-details summary:hover {
  color: var(--clr-text);
}

.build-details pre {
  background-color: var(--clr-code-bg);
  border-top: 1px solid var(--clr-border);
  padding: 0.85rem 1rem;
  overflow-x: auto;
}

.build-details code {
  color: #b8d8f8;
  font-size: 0.82rem;
  line-height: 1.6;
}

.download-note {
  text-align: center;
  color: var(--clr-text-muted);
  font-size: 0.9rem;
  max-width: 600px;
  margin-inline: auto;
}

/* ── License ──────────────────────────────────────────────────────────────── */
.license-box {
  background-color: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  max-width: 720px;
  margin-inline: auto;
  text-align: center;
  margin-top: 2rem;
  box-shadow: var(--shadow-card);
}

.license-badge {
  display: inline-block;
  background-color: var(--clr-accent);
  color: #fff;
  font-weight: 800;
  font-size: 1rem;
  padding: 0.35em 1.2em;
  border-radius: 999px;
  letter-spacing: 0.08em;
  margin-bottom: 1.5rem;
}

.license-box p {
  color: var(--clr-text-muted);
  font-size: 0.97rem;
  margin-bottom: 1rem;
}
.license-box p:last-child {
  margin-bottom: 0;
}
.license-box p strong {
  color: var(--clr-text);
}

/* ── Footer ───────────────────────────────────────────────────────────────── */
.footer {
  background-color: var(--clr-bg-alt);
  border-top: 1px solid var(--clr-border);
  padding-block: 3rem;
}

.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.25rem;
  text-align: center;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 700;
  color: var(--clr-text);
  font-size: 1rem;
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  justify-content: center;
}
.footer-nav a {
  font-size: 0.88rem;
  color: var(--clr-text-muted);
  transition: color 0.2s;
}
.footer-nav a:hover {
  color: var(--clr-heading);
  text-decoration: none;
}

.footer-copy {
  font-size: 0.82rem;
  color: var(--clr-text-muted);
}

/* ── Responsive ───────────────────────────────────────────────────────────── */
@media (max-width: 700px) {
  .nav-links {
    display: none;
    position: fixed;
    top: var(--nav-h);
    left: 0;
    right: 0;
    background-color: var(--clr-bg-alt);
    border-bottom: 1px solid var(--clr-border);
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 0.5rem 0;
  }
  .nav-links.is-open {
    display: flex;
  }
  .nav-links li {
    width: 100%;
  }
  .nav-links a,
  .nav-links .btn {
    display: block;
    padding: 0.85rem 1.5rem;
    font-size: 1rem;
    border-radius: 0;
    border: none;
    background: none;
    text-align: left;
    width: 100%;
  }
  .nav-toggle {
    display: block;
  }

  .hero {
    min-height: auto;
    padding-block: 4rem 3rem;
  }

  .story-grid,
  .features-grid,
  .download-grid {
    grid-template-columns: 1fr;
  }

  .gallery-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 420px) {
  .gallery-grid {
    grid-template-columns: 1fr;
  }
}

/* ── Coming Soon Bar ─────────────────────────────────────────────────────── */
.coming-soon-bar {
  background-color: var(--clr-accent);
  color: #fff;
  text-align: center;
  font-size: 0.85rem;
  font-weight: 500;
  padding: 0.55rem 1.5rem;
  letter-spacing: 0.01em;
  z-index: 99;
}
.coming-soon-bar strong {
  font-weight: 700;
}

/* ── Coming Soon Badge (hero) ────────────────────────────────────────────── */
.coming-soon-badge {
  display: inline-block;
  background-color: var(--clr-accent);
  color: #fff;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 0.28em 0.9em;
  border-radius: 999px;
  margin-bottom: 1.25rem;
}

/* ── Disabled Buttons ────────────────────────────────────────────────────── */
.btn.btn-disabled,
button.btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
  pointer-events: none;
  user-select: none;
}

/* ── Footer logo tint ────────────────────────────────────────────────────── */
.footer-logo img {
  height: 28px;
  width: auto;
  filter: hue-rotate(195deg) saturate(1.3) brightness(1.1);
}