/* ============================================
   NeuroHealth Daily — Advertorial Landing Page
   Design System & Styles
   ============================================ */

/* --- Google Fonts Import --- */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&family=Lora:ital,wght@0,400;0,500;0,600;0,700;1,400;1,500&display=swap');

/* --- CSS Custom Properties --- */
:root {
  /* Colors */
  --color-bg: #FAFAF8;
  --color-bg-alt: #F0EFEB;
  --color-surface: #FFFFFF;
  --color-text: #1A1A1A;
  --color-text-secondary: #4A4A4A;
  --color-text-muted: #7A7A7A;
  --color-navy: #1B2A4A;
  --color-navy-light: #2C3E6B;
  --color-gold: #C9963B;
  --color-gold-light: #E8B84B;
  --color-gold-dark: #A67C2E;
  --color-border: #E0DED8;
  --color-border-light: #EDECE8;
  --color-accent-bg: #F7F3EB;
  --color-trust-bar-bg: #F5F4F0;
  --color-trust-bar-text: #9A9890;
  --color-category: #C9963B;
  --color-link: #1B2A4A;
  --color-disclaimer-bg: #F8F7F5;
  --color-disclaimer-text: #888;

  /* Typography */
  --font-serif: 'Lora', Georgia, 'Times New Roman', serif;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

  /* Spacing */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;
  --space-3xl: 64px;
  --space-4xl: 96px;

  /* Layout */
  --max-width-article: 720px;
  --max-width-wide: 960px;

  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.6s ease-out;

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
  --shadow-lg: 0 8px 30px rgba(0,0,0,0.12);
  --shadow-gold: 0 4px 20px rgba(201, 150, 59, 0.3);

  /* Border radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
}

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

html {
  font-size: 18px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-serif);
  font-size: 1rem;
  line-height: 1.8;
  color: var(--color-text);
  background-color: var(--color-bg);
  overflow-x: hidden;
}

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

a {
  color: var(--color-link);
  text-decoration: none;
  transition: color var(--transition-fast);
}

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

/* --- Reading Progress Bar --- */
.progress-bar {
  position: fixed;
  top: 0;
  left: 0;
  width: 0%;
  height: 3px;
  background: linear-gradient(90deg, var(--color-gold), var(--color-gold-light));
  z-index: 1000;
  transition: width 0.1s linear;
  box-shadow: 0 0 8px rgba(201, 150, 59, 0.4);
}

/* --- Trust Bar --- */
.trust-bar {
  background-color: var(--color-trust-bar-bg);
  border-bottom: 1px solid var(--color-border-light);
  padding: var(--space-sm) var(--space-md);
  text-align: center;
  font-family: var(--font-sans);
  font-size: 0.65rem;
  color: var(--color-trust-bar-text);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.trust-bar span {
  display: inline-block;
  margin: 0 var(--space-sm);
}

.trust-bar .separator {
  color: var(--color-border);
  margin: 0 var(--space-xs);
}

/* --- Publication Header --- */
.pub-header {
  background: var(--color-surface);
  border-bottom: 3px solid var(--color-navy);
  padding: var(--space-lg) var(--space-md);
  text-align: center;
}

.pub-header__logo {
  font-family: var(--font-sans);
  font-weight: 800;
  font-size: 1.8rem;
  color: var(--color-navy);
  letter-spacing: -0.02em;
  margin-bottom: var(--space-xs);
}

.pub-header__logo span {
  color: var(--color-gold);
}

.pub-header__tagline {
  font-family: var(--font-sans);
  font-size: 0.6rem;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.15em;
}

.pub-nav {
  display: flex;
  justify-content: center;
  gap: var(--space-lg);
  margin-top: var(--space-md);
  padding-top: var(--space-md);
  border-top: 1px solid var(--color-border-light);
  font-family: var(--font-sans);
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-secondary);
}

.pub-nav a {
  color: var(--color-text-secondary);
  transition: color var(--transition-fast);
  font-weight: 500;
}

.pub-nav a:hover {
  color: var(--color-gold);
}

/* --- Article Container --- */
.article-container {
  max-width: var(--max-width-article);
  margin: 0 auto;
  padding: var(--space-2xl) var(--space-md);
}

/* --- Category Tag --- */
.category-tag {
  display: inline-block;
  font-family: var(--font-sans);
  font-size: 0.6rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-category);
  background: var(--color-accent-bg);
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--radius-sm);
  margin-bottom: var(--space-md);
}

/* --- Hero Section --- */
.hero {
  margin-bottom: var(--space-xl);
}

.hero__headline {
  font-family: var(--font-sans);
  font-weight: 800;
  font-size: 2.2rem;
  line-height: 1.15;
  color: var(--color-navy);
  margin-bottom: var(--space-md);
  letter-spacing: -0.02em;
}

.hero__subheadline {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  line-height: 1.6;
  color: var(--color-text-secondary);
  font-style: italic;
  margin-bottom: var(--space-lg);
  padding-bottom: var(--space-lg);
  border-bottom: 1px solid var(--color-border-light);
}

/* --- Author Byline --- */
.byline {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  margin-bottom: var(--space-xl);
  font-family: var(--font-sans);
  font-size: 0.72rem;
}

.byline__avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-navy), var(--color-navy-light));
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: 700;
  font-size: 0.8rem;
  flex-shrink: 0;
}

.byline__info {
  line-height: 1.4;
}

.byline__name {
  font-weight: 600;
  color: var(--color-text);
}

.byline__meta {
  color: var(--color-text-muted);
  font-size: 0.65rem;
}

/* --- Hero Image --- */
.hero-image {
  position: relative;
  margin: var(--space-xl) calc(-1 * var(--space-md));
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.hero-image img {
  width: 100%;
  height: auto;
  display: block;
}

.hero-image__caption {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: linear-gradient(transparent, rgba(0,0,0,0.7));
  padding: var(--space-2xl) var(--space-lg) var(--space-md);
  font-family: var(--font-sans);
  font-size: 0.65rem;
  color: rgba(255,255,255,0.8);
  font-style: italic;
}

/* --- Article Body --- */
.article-body {
  margin-bottom: var(--space-2xl);
}

.article-body p {
  margin-bottom: var(--space-lg);
  font-size: 1.05rem;
  line-height: 1.85;
}

.article-body .lead-paragraph {
  font-size: 1.15rem;
  line-height: 1.75;
  color: var(--color-text);
  font-weight: 500;
}

.article-body .lead-paragraph::first-letter {
  font-size: 3.8rem;
  float: left;
  line-height: 0.8;
  margin-right: var(--space-sm);
  margin-top: 6px;
  font-weight: 700;
  color: var(--color-navy);
  font-family: var(--font-sans);
}

/* --- Pull Quote --- */
.pull-quote {
  margin: var(--space-2xl) 0;
  padding: var(--space-xl) var(--space-xl);
  border-left: 4px solid var(--color-gold);
  background: var(--color-accent-bg);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  position: relative;
}

.pull-quote p {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  line-height: 1.65;
  color: var(--color-navy);
  font-style: italic;
  font-weight: 500;
  margin-bottom: var(--space-sm) !important;
}

.pull-quote cite {
  display: block;
  font-family: var(--font-sans);
  font-size: 0.7rem;
  color: var(--color-text-muted);
  font-style: normal;
  font-weight: 500;
  margin-top: var(--space-sm);
}

/* --- Science Callout Box --- */
.science-box {
  margin: var(--space-2xl) 0;
  padding: var(--space-xl);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

.science-box__header {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  margin-bottom: var(--space-md);
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-navy);
}

.science-box__header svg {
  width: 20px;
  height: 20px;
  fill: var(--color-gold);
}

.science-box__stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
  margin-top: var(--space-md);
}

.stat-item {
  text-align: center;
  padding: var(--space-md);
  background: var(--color-accent-bg);
  border-radius: var(--radius-md);
}

.stat-item__number {
  font-family: var(--font-sans);
  font-weight: 800;
  font-size: 1.6rem;
  color: var(--color-navy);
  display: block;
  line-height: 1.2;
}

.stat-item__label {
  font-family: var(--font-sans);
  font-size: 0.6rem;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-top: var(--space-xs);
  display: block;
  line-height: 1.4;
}

/* --- Section Divider --- */
.section-divider {
  text-align: center;
  margin: var(--space-2xl) 0;
  position: relative;
}

.section-divider::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--color-border-light);
}

.section-divider span {
  position: relative;
  display: inline-block;
  background: var(--color-bg);
  padding: 0 var(--space-md);
  color: var(--color-gold);
  font-size: 1.2rem;
}

/* --- CTA Section --- */
.cta-section {
  margin: var(--space-3xl) 0 var(--space-2xl);
  text-align: center;
  padding: var(--space-2xl) var(--space-xl);
  background: linear-gradient(135deg, var(--color-navy) 0%, var(--color-navy-light) 100%);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle at 30% 50%, rgba(201, 150, 59, 0.08) 0%, transparent 50%);
  pointer-events: none;
}

.cta-section__pretitle {
  font-family: var(--font-sans);
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--color-gold-light);
  margin-bottom: var(--space-md);
}

.cta-section__title {
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 1.4rem;
  color: #FFFFFF;
  margin-bottom: var(--space-sm);
  line-height: 1.3;
}

.cta-section__subtitle {
  font-family: var(--font-serif);
  font-size: 0.85rem;
  color: rgba(255,255,255,0.7);
  margin-bottom: var(--space-xl);
  font-style: italic;
}

.cta-button {
  display: inline-block;
  padding: var(--space-md) var(--space-2xl);
  background: linear-gradient(135deg, var(--color-gold) 0%, var(--color-gold-light) 100%);
  color: var(--color-navy);
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 1.05rem;
  border-radius: 50px;
  text-decoration: none;
  transition: all var(--transition-normal);
  box-shadow: var(--shadow-gold);
  position: relative;
  z-index: 1;
  letter-spacing: 0.02em;
  cursor: pointer;
  border: none;
}

.cta-button:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 30px rgba(201, 150, 59, 0.45);
  color: var(--color-navy);
  background: linear-gradient(135deg, var(--color-gold-light) 0%, var(--color-gold) 100%);
}

.cta-button:active {
  transform: translateY(0);
}

/* CTA Pulse Animation */
.cta-button::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border-radius: 50px;
  background: linear-gradient(135deg, var(--color-gold) 0%, var(--color-gold-light) 100%);
  z-index: -1;
  animation: ctaPulse 2.5s ease-in-out infinite;
}

@keyframes ctaPulse {
  0%, 100% {
    opacity: 0;
    transform: scale(1);
  }
  50% {
    opacity: 0.3;
    transform: scale(1.08);
  }
}

.cta-section__guarantee {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  margin-top: var(--space-lg);
  font-family: var(--font-sans);
  font-size: 0.65rem;
  color: rgba(255,255,255,0.5);
}

.cta-section__guarantee svg {
  width: 14px;
  height: 14px;
  fill: rgba(255,255,255,0.5);
}

/* --- Secondary CTA (inline) --- */
.inline-cta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  margin: var(--space-xl) 0;
  padding: var(--space-md) var(--space-lg);
  background: var(--color-accent-bg);
  border-radius: var(--radius-md);
  font-family: var(--font-sans);
  font-size: 0.8rem;
  transition: background var(--transition-fast);
}

.inline-cta:hover {
  background: #EDE8DC;
}

.inline-cta a {
  font-weight: 600;
  color: var(--color-navy);
  text-decoration: underline;
  text-decoration-color: var(--color-gold);
  text-underline-offset: 3px;
}

.inline-cta a:hover {
  color: var(--color-gold);
}

/* --- FTC Disclaimer --- */
.disclaimer-section {
  margin-top: var(--space-3xl);
  padding: var(--space-xl);
  background: var(--color-disclaimer-bg);
  border-top: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
}

.disclaimer-section p {
  font-family: var(--font-sans);
  font-size: 0.6rem;
  line-height: 1.7;
  color: var(--color-disclaimer-text);
  margin-bottom: var(--space-sm);
}

.disclaimer-section p:last-child {
  margin-bottom: 0;
}

.disclaimer-section strong {
  color: var(--color-text-muted);
}

/* --- Footer --- */
.site-footer {
  background: var(--color-navy);
  padding: var(--space-xl) var(--space-md);
  text-align: center;
  margin-top: var(--space-3xl);
}

.site-footer p {
  font-family: var(--font-sans);
  font-size: 0.6rem;
  color: rgba(255,255,255,0.4);
  line-height: 1.6;
}

.site-footer a {
  color: rgba(255,255,255,0.6);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.site-footer a:hover {
  color: var(--color-gold-light);
}

/* --- Scroll Animations --- */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity var(--transition-slow), transform var(--transition-slow);
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* --- Responsive Design --- */

/* Tablets */
@media (min-width: 768px) {
  .hero__headline {
    font-size: 2.6rem;
  }

  .hero-image {
    margin-left: calc(-1 * var(--space-xl));
    margin-right: calc(-1 * var(--space-xl));
  }

  .article-container {
    padding: var(--space-3xl) var(--space-xl);
  }

  .cta-section {
    padding: var(--space-3xl) var(--space-2xl);
  }

  .cta-section__title {
    font-size: 1.6rem;
  }
}

/* Desktop */
@media (min-width: 1024px) {
  .hero__headline {
    font-size: 2.8rem;
  }

  .hero-image {
    margin-left: calc(-1 * var(--space-3xl));
    margin-right: calc(-1 * var(--space-3xl));
    border-radius: var(--radius-xl);
  }

  .pub-nav {
    gap: var(--space-2xl);
  }
}

/* Small Mobile */
@media (max-width: 480px) {
  html {
    font-size: 16px;
  }

  .hero__headline {
    font-size: 1.7rem;
  }

  .hero__subheadline {
    font-size: 1rem;
  }

  .pub-header__logo {
    font-size: 1.4rem;
  }

  .pub-nav {
    gap: var(--space-md);
    font-size: 0.6rem;
    flex-wrap: wrap;
  }

  .trust-bar span {
    display: block;
    margin: 2px 0;
  }

  .trust-bar .separator {
    display: none;
  }

  .science-box__stats {
    grid-template-columns: 1fr;
    gap: var(--space-sm);
  }

  .pull-quote {
    padding: var(--space-md) var(--space-lg);
    margin: var(--space-xl) 0;
  }

  .pull-quote p {
    font-size: 1.05rem;
  }

  .cta-section {
    padding: var(--space-xl) var(--space-md);
    margin-left: calc(-1 * var(--space-md));
    margin-right: calc(-1 * var(--space-md));
    border-radius: 0;
  }

  .cta-button {
    display: block;
    width: 100%;
    text-align: center;
    padding: var(--space-md) var(--space-lg);
  }

  .article-body .lead-paragraph::first-letter {
    font-size: 3rem;
  }

  .byline {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-sm);
  }

  .stat-item__number {
    font-size: 1.3rem;
  }

  .disclaimer-section {
    padding: var(--space-md);
  }
}

/* --- Utility Classes --- */
.text-center { text-align: center; }
.text-muted { color: var(--color-text-muted); }
.mt-sm { margin-top: var(--space-sm); }
.mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }
.mb-lg { margin-bottom: var(--space-lg); }

/* --- Print Styles --- */
@media print {
  .progress-bar,
  .trust-bar,
  .cta-section,
  .site-footer {
    display: none;
  }

  body {
    font-size: 12pt;
    color: #000;
    background: #fff;
  }

  .article-container {
    max-width: 100%;
    padding: 0;
  }
}