/* Shared stylesheet for rashidkhanreshii.com article pages.
   Matches the glassmorphism theme of the homepage. */

:root {
  color-scheme: light;
  --page-background: #edf1f8;
  --background-gradient: radial-gradient(ellipse at 50% 0%, #ffffff 0%, #eef3fc 55%, #e0e8f6 100%);
  --glass-fill: rgba(255, 255, 255, 0.55);
  --glass-fill-strong: rgba(255, 255, 255, 0.88);
  --glass-border-soft: rgba(170, 188, 220, 0.35);
  --text-primary: #1b2436;
  --text-secondary: rgba(27, 36, 54, 0.62);
  --accent: #4f7cff;
  --radius-lg: 26px;
  --radius-md: 20px;
  --radius-full: 999px;
}

body.dark-theme {
  color-scheme: dark;
  --page-background: #0a0a14;
  --background-gradient: radial-gradient(ellipse at 50% 0%, #171730 0%, #0a0a14 60%);
  --glass-fill: rgba(255, 255, 255, 0.10);
  --glass-fill-strong: rgba(255, 255, 255, 0.16);
  --glass-border-soft: rgba(255, 255, 255, 0.14);
  --text-primary: rgba(255, 255, 255, 0.96);
  --text-secondary: rgba(255, 255, 255, 0.62);
  --accent: #7dd3fc;
}

body:not(.dark-theme) .glass {
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.9),
    0 12px 32px rgba(120, 142, 185, 0.16);
}

body:not(.dark-theme) .orb { opacity: 0.35; }
body:not(.dark-theme) .orb1 { background: radial-gradient(circle at 30% 30%, #a5b8f5, transparent 70%); }
body:not(.dark-theme) .orb2 { background: radial-gradient(circle at 60% 40%, #f5b8d4, transparent 70%); }
body:not(.dark-theme) .orb3 { background: radial-gradient(circle at 50% 50%, #a8e6f5, transparent 70%); }

/* floating theme toggle */
.theme-fab {
  position: fixed;
  bottom: 22px;
  right: 22px;
  z-index: 50;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  border-radius: var(--radius-full);
  border: 1px solid var(--glass-border-soft);
  background: var(--glass-fill-strong);
  -webkit-backdrop-filter: blur(24px) saturate(180%);
  backdrop-filter: blur(24px) saturate(180%);
  color: var(--text-primary);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  box-shadow: 0 8px 24px rgba(120, 142, 185, 0.25);
}
.theme-fab svg { width: 17px; height: 17px; }
.theme-fab .moon-icon { display: none; }
body.dark-theme .theme-fab .sun-icon { display: none; }
body.dark-theme .theme-fab .moon-icon { display: block; }

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  min-height: 100%;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "Segoe UI", Roboto, sans-serif;
  color: var(--text-primary);
  background: var(--page-background);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  display: flex;
  justify-content: center;
  min-height: 100vh;
  padding: 48px 20px 80px;
}

/* ---------- animated background ---------- */
.bg {
  position: fixed;
  inset: 0;
  z-index: 0;
  overflow: hidden;
  background: var(--background-gradient);
}

.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(90px);
  opacity: 0.55;
}

.orb1 {
  width: 480px; height: 480px;
  top: -140px; left: -120px;
  background: radial-gradient(circle at 30% 30%, #6366f1, transparent 70%);
}

.orb2 {
  width: 420px; height: 420px;
  bottom: -160px; right: -100px;
  background: radial-gradient(circle at 60% 40%, #ec4899, transparent 70%);
}

.orb3 {
  width: 380px; height: 380px;
  top: 40%; left: 50%;
  transform: translate(-50%, -50%);
  background: radial-gradient(circle at 50% 50%, #22d3ee, transparent 70%);
}

/* ---------- layout ---------- */
.page {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 720px;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.glass {
  background: var(--glass-fill);
  -webkit-backdrop-filter: blur(24px) saturate(180%);
  backdrop-filter: blur(24px) saturate(180%);
  border: 1px solid var(--glass-border-soft);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.25),
    0 8px 32px rgba(0, 0, 0, 0.35);
  position: relative;
}

/* ---------- navigation ---------- */
.site-nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 4px;
  padding: 8px 10px;
  border-radius: var(--radius-full);
  margin-bottom: 22px;
  width: 100%;
}

.nav-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 13px;
  font-weight: 550;
  padding: 8px 14px;
  border-radius: var(--radius-full);
  transition: background 0.25s, color 0.25s;
  white-space: nowrap;
}

.nav-link:hover {
  background: var(--glass-fill-strong);
  color: var(--text-primary);
}

.nav-link.nav-active {
  background: var(--glass-fill-strong);
  color: var(--text-primary);
}

/* ---------- article ---------- */
.article-card {
  width: 100%;
  border-radius: var(--radius-lg);
  padding: 34px 32px;
  margin-bottom: 8px;
}

.article-card h1 {
  font-size: 26px;
  font-weight: 700;
  letter-spacing: -0.01em;
  margin: 0 0 6px;
  line-height: 1.25;
}

.article-meta {
  font-size: 12.5px;
  color: var(--text-secondary);
  margin: 0 0 22px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--glass-border-soft);
}

.article-card h2 {
  font-size: 19px;
  font-weight: 650;
  margin: 28px 0 10px;
  line-height: 1.35;
}

.article-card h3 {
  font-size: 16px;
  font-weight: 600;
  margin: 22px 0 8px;
}

.article-card p {
  font-size: 15px;
  line-height: 1.75;
  color: var(--text-secondary);
  margin: 0 0 14px;
}

.article-card p strong,
.article-card li strong {
  color: var(--text-primary);
  font-weight: 600;
}

.article-card ul,
.article-card ol {
  margin: 0 0 16px;
  padding-left: 22px;
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.75;
}

.article-card li { margin-bottom: 6px; }

.article-card a {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.article-card a:hover { opacity: 0.85; }

.lead {
  font-size: 16.5px !important;
  line-height: 1.7 !important;
  color: var(--text-primary) !important;
}

/* callout + download button */
.callout {
  background: rgba(125, 211, 252, 0.08);
  border: 1px solid rgba(125, 211, 252, 0.25);
  border-radius: var(--radius-md);
  padding: 16px 18px;
  margin: 20px 0;
  font-size: 14.5px;
  line-height: 1.65;
  color: var(--text-secondary);
}

.callout strong { color: var(--text-primary); }

.btn-download {
  display: inline-block;
  background: linear-gradient(135deg, #7c3aed, #ec4899);
  color: #fff !important;
  text-decoration: none !important;
  font-weight: 650;
  font-size: 15px;
  padding: 13px 28px;
  border-radius: var(--radius-full);
  margin: 8px 0 4px;
  box-shadow: 0 8px 24px rgba(236, 72, 153, 0.35);
  transition: transform 0.2s, box-shadow 0.2s;
}

.btn-download:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 30px rgba(236, 72, 153, 0.45);
  opacity: 1 !important;
}

.btn-center { text-align: center; margin: 22px 0; }

/* related links */
.related {
  width: 100%;
  margin-top: 18px;
  border-radius: var(--radius-lg);
  padding: 22px 24px;
}

.related h2 {
  font-size: 16px;
  font-weight: 650;
  margin: 0 0 12px;
}

.related ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.related a {
  color: var(--text-primary);
  text-decoration: none;
  font-size: 14px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.related a:hover { color: var(--accent); }
.related a span.emoji { font-size: 18px; }

footer {
  margin-top: 28px;
  font-size: 12px;
  color: var(--text-secondary);
  text-align: center;
  line-height: 1.8;
}

footer a { color: inherit; }

.author-box {
  display: flex;
  gap: 14px;
  align-items: center;
  margin-top: 26px;
  padding-top: 20px;
  border-top: 1px solid var(--glass-border-soft);
}

.author-box img {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  object-fit: cover;
}

.author-box .author-name {
  font-size: 14px;
  font-weight: 650;
  color: var(--text-primary);
  margin: 0 0 2px;
}

.author-box .author-bio {
  font-size: 12.5px;
  color: var(--text-secondary);
  margin: 0;
  line-height: 1.5;
}

@media (max-width: 560px) {
  body { padding: 32px 14px 60px; }
  .article-card { padding: 24px 20px; }
  .article-card h1 { font-size: 22px; }
}