/* ============================================================
   W3C-Inspired Minimal Professional Stylesheet
   codeguyakash.github.io
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

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

:root {
  --color-bg:          #ffffff;
  --color-surface:     #f7f8f9;
  --color-border:      #d4d8dd;
  --color-accent:      #005a9c;   /* W3C blue */
  --color-accent-dark: #003d6e;
  --color-text:        #1a1a1a;
  --color-muted:       #5c6370;
  --color-link:        #005a9c;
  --color-link-hover:  #003d6e;
  --color-rule:        #e0e4e8;

  --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
  --font-mono: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;

  --radius-sm: 3px;
  --radius-md: 6px;

  --max-width: 48rem;
  --sidebar-width: 14rem;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.7;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ── Top Banner ───────────────────────────────────────────── */
.site-banner {
  background-color: var(--color-accent);
  color: #fff;
  padding: 0;
  height: 3rem;
  font-size: 0.8rem;
  letter-spacing: 0.03em;
  flex-shrink: 0;
}

.site-banner-inner {
  width: 50%;
  margin: 0 auto;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.site-banner a {
  color: #c5dcf4;
  text-decoration: none;
}

.site-banner a:hover {
  color: #fff;
  text-decoration: underline;
}

.banner-brand {
  font-weight: 600;
  font-size: 1.1rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: #fff;
}

/* ── Header ───────────────────────────────────────────────── */
.site-header {
  border-bottom: 3px solid var(--color-accent);
  padding: 1rem 0;
  background-color: var(--color-bg);
}

.site-header-inner {
  width: 50%;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.site-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
}

.site-logo-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--color-border);
}

.site-logo-name {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-accent);
  letter-spacing: -0.02em;
}

.site-logo-handle {
  font-size: 0.75rem;
  font-weight: 400;
  color: var(--color-muted);
  margin-top: 1px;
}

/* ── Nav ──────────────────────────────────────────────────── */
.site-nav {
  border-bottom: 1px solid var(--color-rule);
  background-color: var(--color-surface);
}

.site-nav-inner {
  width: 50%;
  margin: 0 auto;
  padding: 0;
  display: flex;
  gap: 0;
  overflow-x: auto;
}

.site-nav a {
  display: block;
  padding: 0.65rem 1rem;
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--color-muted);
  text-decoration: none;
  border-bottom: 2px solid transparent;
  white-space: nowrap;
  transition: color 0.15s, border-color 0.15s;
}

.site-nav a:hover,
.site-nav a.active {
  color: var(--color-accent);
  border-bottom-color: var(--color-accent);
}

/* ── Layout ───────────────────────────────────────────────── */
.site-body {
  flex: 1;
  width: 50%;
  margin: 0 auto;
  padding: 2rem 0;
}

/* ── Main Content ─────────────────────────────────────────── */
.main-content {
  width: 100%;
}

/* ── Typography ───────────────────────────────────────────── */
h1, h2, h3, h4, h5, h6 {
  color: var(--color-text);
  line-height: 1.3;
  font-weight: 600;
}

h1 {
  font-size: 1.75rem;
  letter-spacing: -0.025em;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--color-accent);
  margin-bottom: 1.5rem;
}

h2 {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--color-accent-dark);
  margin-top: 2rem;
  margin-bottom: 0.75rem;
  padding-bottom: 0.3rem;
  border-bottom: 1px solid var(--color-rule);
}

h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-top: 1.25rem;
  margin-bottom: 0.4rem;
}

p {
  margin-bottom: 1rem;
  color: var(--color-text);
  font-size: 0.9rem;
}

a {
  color: var(--color-link);
  text-decoration: underline;
  text-underline-offset: 2px;
}

a:hover {
  color: var(--color-link-hover);
}

ul, ol {
  padding-left: 1.4rem;
  margin-bottom: 1rem;
}

li {
  font-size: 0.9rem;
  margin-bottom: 0.35rem;
  color: var(--color-text);
}

strong {
  font-weight: 600;
}

em {
  font-style: italic;
  color: var(--color-muted);
}

code {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 0.1em 0.35em;
}

hr {
  border: none;
  border-top: 1px solid var(--color-rule);
  margin: 1.5rem 0;
}

/* ── Profile Card (index) ─────────────────────────────────── */
.profile-card {
  display: flex;
  align-items: flex-start;
  gap: 1.25rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  margin-bottom: 2rem;
}

.profile-avatar {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  object-fit: cover;
  flex-shrink: 0;
  border: 2px solid var(--color-border);
}

.profile-info h1 {
  font-size: 1.3rem;
  border: none;
  padding-bottom: 0;
  margin-bottom: 0.15rem;
}

.profile-info .handle {
  font-size: 0.8rem;
  color: var(--color-muted);
  margin-bottom: 0.5rem;
  display: block;
}

.profile-info .tagline {
  font-size: 0.85rem;
  color: var(--color-muted);
  font-weight: 400;
  margin: 0;
}

/* ── Product Section ──────────────────────────────────────── */
.product-card {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1rem 1.25rem;
  margin-bottom: 1rem;
  background: var(--color-bg);
}

.product-card h3 {
  margin-top: 0;
  font-size: 0.95rem;
  color: var(--color-accent);
}

.product-card h2 {
  margin-top: 0.25rem;
  font-size: 1rem;
  color: var(--color-accent);
}

.product-card ul {
  font-size: 0.84rem;
  margin: 0.5rem 0 0.75rem 1.25rem;
  color: var(--color-muted);
}

.product-card p {
  font-size: 0.85rem;
  margin-bottom: 0.75rem;
}

.product-card-header {
  margin-bottom: 0.4rem;
}

.product-publisher {
  font-size: 0.76rem;
  color: var(--color-muted);
  font-weight: 600;
  text-transform: uppercase;
  margin-top: -0.15rem;
  margin-bottom: 0.65rem;
  letter-spacing: 0.05em;
}

.product-badge {
  display: inline-block;
  background: #e8f0fe;
  color: var(--color-accent);
  font-size: 0.72rem;
  font-weight: 600;
  padding: 0.15rem 0.55rem;
  border-radius: 100px;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

.product-badge-android {
  background: #e6f4ea;
  color: #1e7e34;
}

.product-actions {
  display: flex;
  gap: 0.6rem;
  flex-wrap: wrap;
  margin-top: 0.75rem;
}

/* ── Button ───────────────────────────────────────────────── */
.btn {
  display: inline-block;
  background-color: var(--color-accent);
  color: #fff !important;
  text-decoration: none !important;
  padding: 0.45rem 1rem;
  border-radius: var(--radius-sm);
  font-size: 0.82rem;
  font-weight: 500;
  transition: background 0.15s;
}

.btn:hover {
  background-color: var(--color-accent-dark);
}

.btn-outline {
  background-color: transparent !important;
  color: var(--color-accent) !important;
  border: 1px solid var(--color-accent);
}

.btn-outline:hover {
  background-color: var(--color-surface) !important;
}

/* ── Notice Box ───────────────────────────────────────────── */
.notice {
  background-color: #fff8e6;
  border-left: 3px solid #d4930a;
  padding: 0.75rem 1rem;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-size: 0.85rem;
  margin-bottom: 1rem;
  color: #5c4a00;
}

/* ── Social Links ─────────────────────────────────────────── */
.social-links {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin-top: 0.5rem;
}

.social-links a {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.82rem;
  color: var(--color-muted);
  text-decoration: none;
  padding: 0.3rem 0.65rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  transition: border-color 0.15s, color 0.15s;
}

.social-links a:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

/* ── Footer ───────────────────────────────────────────────── */
.site-footer {
  border-top: 1px solid var(--color-rule);
  background-color: var(--color-surface);
  padding: 1.25rem 0;
  font-size: 0.75rem;
  color: var(--color-muted);
}

.site-footer-inner {
  width: 50%;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.site-footer a {
  color: var(--color-muted);
  text-decoration: none;
}

.site-footer a:hover {
  text-decoration: underline;
  color: var(--color-accent);
}

.footer-links-row {
  display: flex;
  gap: 1.25rem;
  flex-wrap: wrap;
}

/* ── Last Updated Tag ─────────────────────────────────────── */
.last-updated {
  font-size: 0.75rem;
  color: var(--color-muted);
  margin-top: 2rem;
  padding-top: 0.75rem;
  border-top: 1px solid var(--color-rule);
}

/* ── Responsive ───────────────────────────────────────────── */
@media (max-width: 680px) {
  .site-body,
  .site-header-inner,
  .site-nav-inner,
  .site-footer-inner {
    width: 95%;
    padding-left: 0;
    padding-right: 0;
  }

  .site-body {
    padding-top: 1.25rem;
    padding-bottom: 1.25rem;
  }

  .site-header {
    padding: 0.75rem 1rem;
  }

  .site-banner {
    padding: 0 1rem;
    font-size: 0.72rem;
  }

  h1 {
    font-size: 1.4rem;
  }

  .profile-card {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }

  .social-links {
    justify-content: center;
  }
}