/* ================================================
   MODAFINIL ULTIMATE GUIDE — Complete Redesign v2
   Font: Space Grotesk | Vibe: Bold editorial tech
   ================================================ */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg:        #06080d;
  --bg-card:   #0c1018;
  --bg-card-2: #111823;
  --accent:    #4ade80;
  --gold:      #f0c040;
  --pink:      #f472b6;
  --blue:      #60a5fa;
  --orange:    #fb923c;
  --text:      #e8f4e8;
  --text-sec:  #8aaa8a;
  --text-muted:#3d5c3d;
  --border:    #161e16;
  --border-2:  #1a2418;
  --max-width: 1200px;
  --font:      'Space Grotesk', system-ui, sans-serif;
  --radius:    0.75rem;
}

::-webkit-scrollbar { width: 3px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--accent); border-radius: 2px; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  overflow-x: hidden;
}

/* ---- Animated grid background ---- */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(74,222,128,0.022) 1px, transparent 1px),
    linear-gradient(90deg, rgba(74,222,128,0.022) 1px, transparent 1px);
  background-size: 64px 64px;
  pointer-events: none;
  z-index: 0;
}

body::after {
  content: '';
  position: fixed;
  inset: 0;
  background:
    radial-gradient(ellipse at 15% 40%, rgba(74,222,128,0.06) 0%, transparent 55%),
    radial-gradient(ellipse at 85% 20%, rgba(240,192,64,0.05) 0%, transparent 55%),
    radial-gradient(ellipse at 55% 85%, rgba(244,114,182,0.04) 0%, transparent 50%);
  animation: colorDrift 18s ease-in-out infinite alternate;
  pointer-events: none;
  z-index: 0;
}

@keyframes colorDrift {
  0%   { opacity: 0.5; transform: scale(1); }
  50%  { opacity: 1;   transform: scale(1.07); }
  100% { opacity: 0.6; transform: scale(1); }
}

/* ========================
   NAVIGATION — Floating pill
   ======================== */
.nav {
  position: fixed;
  top: 1.1rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 1000;
  background: rgba(10,14,20,0.92);
  backdrop-filter: blur(20px);
  border: 1px solid rgba(74,222,128,0.18);
  border-radius: 3rem;
  width: auto;
  transition: border-color 0.3s, box-shadow 0.3s;
  white-space: nowrap;
}

.nav-inner {
  padding: 0 1.25rem;
  height: 48px;
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav-logo {
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.01em;
  text-decoration: none;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.nav-logo::before {
  content: '';
  display: inline-block;
  width: 7px;
  height: 7px;
  background: var(--accent);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--accent);
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%       { opacity: 0.5; transform: scale(0.7); }
}

.nav-divider {
  width: 1px;
  height: 18px;
  background: var(--border-2);
}

.nav-links {
  list-style: none;
  display: flex;
  gap: 0.25rem;
}

.nav-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  padding: 0.35rem 0.75rem;
  border-radius: 2rem;
  transition: all 0.2s;
}

.nav-links a:hover {
  color: var(--text);
  background: rgba(74,222,128,0.08);
}

.nav-links a.active {
  color: #06080d;
  background: var(--accent);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.3rem;
}

.nav-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--text-sec);
  border-radius: 1px;
  transition: all 0.3s;
}

/* ========================
   HERO
   ======================== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 90px 1.5rem 60px;
  max-width: var(--max-width);
  margin: 0 auto;
  gap: 3rem;
  position: relative;
  z-index: 1;
}

.hero-content {
  flex: 1;
  max-width: 600px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
  border: 1px solid rgba(74,222,128,0.28);
  padding: 0.35rem 0.9rem;
  border-radius: 2rem;
  margin-bottom: 1.75rem;
  position: relative;
  overflow: hidden;
}

.hero-badge::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, transparent, rgba(74,222,128,0.12), transparent);
  animation: shimmer 2.5s linear infinite;
}

@keyframes shimmer {
  0%   { transform: translateX(-100%); }
  100% { transform: translateX(100%); }
}

.hero-title {
  font-size: clamp(2.6rem, 5.5vw, 4.2rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.035em;
  color: var(--text);
  margin-bottom: 1.25rem;
}

.hero-highlight {
  background: linear-gradient(135deg, var(--accent) 30%, var(--gold));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-sub {
  font-size: 1.05rem;
  color: var(--text-sec);
  max-width: 460px;
  margin-bottom: 2.5rem;
  line-height: 1.75;
  font-weight: 400;
}

/* Stats grid */
.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border: 1px solid var(--border-2);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--border-2);
  gap: 1px;
  max-width: 500px;
}

.hero-stat {
  background: var(--bg-card);
  padding: 1.1rem 0.75rem;
  text-align: center;
  transition: background 0.2s;
  cursor: default;
}

.hero-stat:hover { background: var(--bg-card-2); }

.hero-stat-num {
  display: block;
  font-size: 1.35rem;
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.03em;
  margin-bottom: 0.3rem;
}

.hero-stat:nth-child(1) .hero-stat-num { color: var(--accent); }
.hero-stat:nth-child(2) .hero-stat-num { color: var(--gold); }
.hero-stat:nth-child(3) .hero-stat-num { color: var(--pink); }
.hero-stat:nth-child(4) .hero-stat-num { color: var(--blue); }

.hero-stat-label {
  display: block;
  font-size: 0.58rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
}

/* ---- Hero visual: orbiting rings ---- */
.hero-visual {
  flex: 0 0 360px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-orbit {
  position: relative;
  width: 320px;
  height: 320px;
}

.orbit-ring {
  position: absolute;
  border-radius: 50%;
  border: 1px solid transparent;
  animation: spinOrbit linear infinite;
}

.orbit-ring:nth-child(1) {
  inset: 0;
  border-color: rgba(74,222,128,0.2);
  animation-duration: 22s;
}

.orbit-ring:nth-child(2) {
  inset: 40px;
  border-color: rgba(240,192,64,0.18);
  animation-duration: 16s;
  animation-direction: reverse;
}

.orbit-ring:nth-child(3) {
  inset: 80px;
  border-color: rgba(244,114,182,0.15);
  animation-duration: 28s;
}

.orbit-ring:nth-child(4) {
  inset: 120px;
  border-color: rgba(96,165,250,0.12);
  animation-duration: 12s;
  animation-direction: reverse;
}

.orbit-ring::before,
.orbit-ring::after {
  content: '';
  position: absolute;
  border-radius: 50%;
}

.orbit-ring::before {
  width: 8px; height: 8px;
  top: -4px; left: 50%;
  transform: translateX(-50%);
}

.orbit-ring::after {
  width: 5px; height: 5px;
  bottom: -3px; right: 18%;
}

.orbit-ring:nth-child(1)::before { background: var(--accent); box-shadow: 0 0 12px var(--accent); }
.orbit-ring:nth-child(1)::after  { background: var(--accent); opacity: 0.4; }
.orbit-ring:nth-child(2)::before { background: var(--gold);   box-shadow: 0 0 10px var(--gold); }
.orbit-ring:nth-child(2)::after  { background: var(--gold);   opacity: 0.4; }
.orbit-ring:nth-child(3)::before { background: var(--pink);   box-shadow: 0 0 10px var(--pink); }
.orbit-ring:nth-child(3)::after  { background: var(--pink);   opacity: 0.4; }
.orbit-ring:nth-child(4)::before { background: var(--blue);   box-shadow: 0 0 8px var(--blue); }
.orbit-ring:nth-child(4)::after  { background: var(--blue);   opacity: 0.4; }

@keyframes spinOrbit {
  from { transform: rotate(0deg); }
  to   { transform: rotate(360deg); }
}

.orbit-center {
  position: absolute;
  inset: 140px;
  background: var(--bg-card);
  border-radius: 50%;
  border: 1px solid var(--border-2);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 0.2rem;
  box-shadow: 0 0 50px rgba(74,222,128,0.07);
}

.orbit-label {
  font-size: 1.6rem;
  font-weight: 700;
  letter-spacing: -0.04em;
  background: linear-gradient(135deg, var(--accent), var(--gold));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.orbit-sublabel {
  font-size: 0.52rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-muted);
  font-weight: 700;
}

/* ========================
   VENDOR BANNER
   ======================== */
.vendor-banner {
  max-width: var(--max-width);
  margin: 0 auto 1.5rem;
  padding: 0 1.5rem;
  position: relative;
  z-index: 1;
}

.vendor-banner-inner {
  background: linear-gradient(135deg, rgba(74,222,128,0.06), rgba(240,192,64,0.06));
  border: 1px solid rgba(74,222,128,0.2);
  border-radius: var(--radius);
  padding: 0.85rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.vendor-banner-inner::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, transparent, rgba(74,222,128,0.06), transparent);
  animation: shimmer 4s linear infinite;
}

.vendor-banner-label {
  font-size: 0.62rem;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--text-muted);
  font-weight: 700;
}

.vendor-banner-link {
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--accent);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 0.35rem;
  transition: opacity 0.2s;
}

.vendor-banner-link:hover { opacity: 0.7; }

.vendor-banner-arrow {
  display: inline-block;
  transition: transform 0.2s;
  font-size: 0.9rem;
}

.vendor-banner-link:hover .vendor-banner-arrow {
  transform: translate(2px, -2px);
}

/* ========================
   TAG FILTERS
   ======================== */
main { position: relative; z-index: 1; }

.tags {
  max-width: var(--max-width);
  margin: 0 auto 1.25rem;
  padding: 0 1.5rem;
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.tag {
  font-family: var(--font);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.4rem 0.85rem;
  border-radius: 0.3rem;
  border: 1px solid var(--border-2);
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  transition: all 0.2s;
}

.tag:hover {
  border-color: rgba(74,222,128,0.35);
  color: var(--accent);
}

.tag.active {
  background: var(--accent);
  border-color: var(--accent);
  color: #06080d;
}

/* ========================
   ARTICLE GRID — Unified bordered grid
   ======================== */
.articles {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem 5rem;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--border-2);
  counter-reset: card-counter;
}

/* ========================
   CARDS
   ======================== */
.card {
  background: var(--bg-card);
  padding: 1.75rem;
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  transition: background 0.25s;
  counter-increment: card-counter;
  overflow: hidden;
}

/* Top border animation */
.card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: transparent;
  transition: background 0.35s;
}

/* Article number */
.card::after {
  content: counter(card-counter, decimal-leading-zero);
  position: absolute;
  top: 1.75rem;
  right: 1.75rem;
  font-size: 0.6rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  opacity: 0.5;
}

.card:hover { background: var(--bg-card-2); }

.card:hover::before {
  background: linear-gradient(90deg, var(--accent), var(--gold), var(--pink));
}

/* Featured: spans 2 cols */
.card.featured { grid-column: span 2; }
.card.featured h3 { font-size: 1.22rem; }

/* Card images */
.card-img {
  width: calc(100% + 3.5rem);
  margin: -1.75rem -1.75rem 0.25rem;
  height: 190px;
  object-fit: cover;
  display: block;
  filter: brightness(0.8) saturate(0.85);
  transition: filter 0.35s;
}

.card.featured .card-img { height: 230px; }
.card:hover .card-img { filter: brightness(0.95) saturate(1.1); }

/* Category tag pill */
.card-tag {
  display: inline-block;
  font-size: 0.62rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 0.22rem 0.6rem;
  border-radius: 0.2rem;
  align-self: flex-start;
}

.card[data-category="science"]      .card-tag { background: rgba(74,222,128,0.12);  color: var(--accent); }
.card[data-category="guides"]       .card-tag { background: rgba(240,192,64,0.12);  color: var(--gold); }
.card[data-category="productivity"] .card-tag { background: rgba(96,165,250,0.12);  color: var(--blue); }
.card[data-category="reviews"]      .card-tag { background: rgba(244,114,182,0.12); color: var(--pink); }
.card[data-category="nootropics"]   .card-tag { background: rgba(251,146,60,0.12);  color: var(--orange); }

/* Title */
.card h3 {
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: -0.02em;
  padding-right: 2rem;
}

.card h3 a {
  color: var(--text);
  text-decoration: none;
  transition: color 0.2s;
}

.card:hover h3 a { color: var(--accent); }

/* Description */
.card p {
  font-size: 0.865rem;
  color: var(--text-sec);
  line-height: 1.65;
  flex: 1;
}

/* Meta */
.card-meta {
  font-size: 0.68rem;
  color: var(--text-muted);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

/* Reveal animation */
.card.reveal {
  opacity: 0;
  transform: translateY(14px);
  transition: background 0.25s, opacity 0.5s ease-out, transform 0.5s ease-out;
}

.card.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ========================
   POST CONTENT
   ======================== */
.page-content {
  max-width: 720px;
  margin: 0 auto;
  padding: 100px 1.5rem 5rem;
  position: relative;
  z-index: 1;
}

.page-content h1 {
  font-size: clamp(1.9rem, 4vw, 2.75rem);
  font-weight: 700;
  letter-spacing: -0.035em;
  line-height: 1.15;
  margin-bottom: 0.9rem;
  background: linear-gradient(135deg, var(--text) 55%, var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.post-meta {
  font-size: 0.7rem;
  color: var(--text-muted);
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 2.5rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border-2);
}

.page-content h2 {
  font-size: 1.4rem;
  font-weight: 700;
  letter-spacing: -0.025em;
  margin: 2.5rem 0 0.8rem;
  color: var(--text);
}

.page-content h3 {
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  margin: 1.75rem 0 0.55rem;
  color: var(--accent);
}

.page-content p {
  font-size: 1rem;
  line-height: 1.82;
  color: var(--text-sec);
  margin-bottom: 1.25rem;
}

.page-content ul,
.page-content ol { margin: 0.75rem 0 1.5rem 1.25rem; }

.page-content li {
  font-size: 1rem;
  line-height: 1.75;
  color: var(--text-sec);
  margin-bottom: 0.5rem;
}

.page-content strong { color: var(--text); font-weight: 700; }

.page-content a {
  color: var(--accent);
  text-decoration: underline;
  text-decoration-color: rgba(74,222,128,0.3);
  text-underline-offset: 3px;
  transition: text-decoration-color 0.2s;
}

.page-content a:hover { text-decoration-color: var(--accent); }

/* Disclaimer */
.disclaimer {
  background: rgba(240,192,64,0.05);
  border: 1px solid rgba(240,192,64,0.18);
  border-left: 3px solid var(--gold);
  border-radius: var(--radius);
  padding: 1rem 1.25rem;
  font-size: 0.85rem;
  color: var(--text-sec);
  line-height: 1.65;
  margin: 2rem 0;
}

.disclaimer strong { color: var(--gold); }

/* Related posts */
.related-posts {
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border-2);
}

.related-posts h2 {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 1rem;
}

.related-posts ul {
  list-style: none;
  margin: 0; padding: 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.5rem;
}

.related-posts li a {
  display: block;
  padding: 0.8rem 1rem;
  background: var(--bg-card);
  border: 1px solid var(--border-2);
  border-radius: 0.5rem;
  font-size: 0.83rem;
  font-weight: 500;
  color: var(--text-sec);
  text-decoration: none;
  transition: all 0.2s;
  line-height: 1.4;
}

.related-posts li a:hover {
  background: var(--bg-card-2);
  border-color: rgba(74,222,128,0.3);
  color: var(--accent);
}

/* ========================
   FOOTER
   ======================== */
.footer {
  position: relative;
  z-index: 1;
  border-top: 1px solid var(--border-2);
  padding: 2rem 1.5rem;
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.footer-links { list-style: none; display: flex; gap: 1.5rem; }

.footer-links a {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
  text-decoration: none;
  transition: color 0.2s;
}

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

.footer p { font-size: 0.72rem; color: var(--text-muted); }

/* ========================
   RESPONSIVE
   ======================== */
@media (max-width: 960px) {
  .hero { flex-direction: column; min-height: auto; gap: 2.5rem; padding-top: 80px; }
  .hero-visual { display: none; }
  .hero-stats { max-width: 100%; }
  .articles { grid-template-columns: 1fr 1fr; }
  .card.featured { grid-column: span 2; }
}

@media (max-width: 600px) {
  .hero-title { font-size: 2.3rem; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); }
  .articles { grid-template-columns: 1fr; background: var(--bg); gap: 0; }
  .card { border-bottom: 1px solid var(--border-2); }
  .card.featured { grid-column: span 1; }
  .card.featured h3 { font-size: 1rem; }
  .related-posts ul { grid-template-columns: 1fr; }
  .nav {
    top: 0.75rem;
    width: calc(100% - 2rem);
    max-width: 420px;
  }
  .nav-links { display: none; }
  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 4rem; left: 50%;
    transform: translateX(-50%);
    width: calc(100% - 2rem);
    max-width: 420px;
    background: rgba(10,14,20,0.97);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(74,222,128,0.18);
    border-radius: 1.25rem;
    padding: 1.25rem;
    gap: 0.25rem;
    z-index: 999;
  }
  .nav-links.open a {
    padding: 0.6rem 1rem;
    border-radius: 0.75rem;
  }
  .nav-toggle { display: flex; }
  .nav-divider { display: none; }
}