/* ============================================
   HELPFULHUB — Main Stylesheet
   Version: 1.0
   
   HOW TO SWITCH PRODUCTS EASILY:
   Just change the variables below in :root
   and the whole site updates automatically!
   ============================================ */

:root {
  /* ==========================================
     PRODUCT VARIABLES — CHANGE THESE EASILY!
     ========================================== */
  --product-name: "YouSleep";
  --product-tagline: "Natural Sleep Support";
  --affiliate-cta: "Try YouSleep Tonight";

  /* ==========================================
     BRAND COLORS
     ========================================== */
  --color-primary: #2d6a4f;        /* Deep calming green */
  --color-primary-light: #52b788;  /* Soft green */
  --color-primary-dark: #1b4332;   /* Dark forest green */
  --color-accent: #f4a261;         /* Warm amber — trust + warmth */
  --color-accent-dark: #e76f51;    /* Deep amber for hover */

  --color-bg: #faf9f6;             /* Warm off-white */
  --color-bg-alt: #f0ede8;         /* Slightly darker warm white */
  --color-surface: #ffffff;
  --color-text: #1a1a2e;           /* Deep navy — readable */
  --color-text-light: #4a4a6a;     /* Medium purple-grey */
  --color-text-muted: #8888a8;     /* Muted for meta info */
  --color-border: #e0ddd8;

  /* ==========================================
     TYPOGRAPHY
     ========================================== */
  --font-heading: 'Lora', Georgia, serif;
  --font-body: 'DM Sans', system-ui, sans-serif;
  --font-size-base: 1.0625rem;     /* 17px — easy reading */
  --line-height: 1.75;

  /* ==========================================
     SPACING & LAYOUT
     ========================================== */
  --container-max: 1160px;
  --section-padding: 5rem 0;
  --border-radius: 12px;
  --border-radius-lg: 20px;
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 20px rgba(0,0,0,0.10);
  --shadow-lg: 0 8px 40px rgba(0,0,0,0.13);

  /* ==========================================
     TRANSITIONS
     ========================================== */
  --transition: 0.25s ease;
}

/* ============================================
   RESET & BASE
   ============================================ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-body);
  font-size: var(--font-size-base);
  line-height: var(--line-height);
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--color-primary); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--color-primary-dark); }
a:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 3px;
  border-radius: 3px;
}
ul { list-style: none; }

/* ============================================
   SKIP LINK — ACCESSIBILITY
   ============================================ */
.skip-link {
  position: absolute;
  top: -100%;
  left: 1rem;
  background: var(--color-primary);
  color: white;
  padding: 0.5rem 1rem;
  border-radius: var(--border-radius);
  font-weight: 600;
  z-index: 9999;
}
.skip-link:focus { top: 1rem; }

/* ============================================
   CONTAINER
   ============================================ */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* ============================================
   BUTTONS
   ============================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.875rem 1.875rem;
  border-radius: 50px;
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  border: 2px solid transparent;
  transition: all var(--transition);
  text-decoration: none;
  white-space: nowrap;
}

.btn-primary {
  background: var(--color-primary);
  color: white;
  border-color: var(--color-primary);
}
.btn-primary:hover {
  background: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
  color: white;
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-secondary {
  background: var(--color-accent);
  color: white;
  border-color: var(--color-accent);
}
.btn-secondary:hover {
  background: var(--color-accent-dark);
  border-color: var(--color-accent-dark);
  color: white;
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-outline {
  background: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}
.btn-outline:hover {
  background: var(--color-primary);
  color: white;
  transform: translateY(-2px);
}

/* ============================================
   COOKIE BANNER — GDPR
   ============================================ */
.cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--color-primary-dark);
  color: white;
  padding: 1rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  z-index: 1000;
  transform: translateY(100%);
  transition: transform 0.4s ease;
}
.cookie-banner.visible { transform: translateY(0); }
.cookie-banner p { font-size: 0.875rem; }
.cookie-banner a { color: var(--color-accent); }
.cookie-banner button {
  background: var(--color-accent);
  color: white;
  border: none;
  padding: 0.5rem 1.25rem;
  border-radius: 50px;
  font-weight: 600;
  cursor: pointer;
  white-space: nowrap;
}

/* ============================================
   HEADER
   ============================================ */
.site-header {
  position: sticky;
  top: 0;
  background: rgba(250, 249, 246, 0.96);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  z-index: 900;
  padding: 0.875rem 0;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-heading);
  font-size: 1.375rem;
  color: var(--color-text);
  text-decoration: none;
}
.logo:hover { color: var(--color-primary); }
.logo-icon { font-size: 1.5rem; }
.logo strong { color: var(--color-primary); }

.main-nav { display: flex; align-items: center; }

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

.nav-menu a {
  display: block;
  padding: 0.5rem 0.875rem;
  font-weight: 500;
  color: var(--color-text-light);
  border-radius: 8px;
  transition: all var(--transition);
  font-size: 0.9375rem;
}
.nav-menu a:hover,
.nav-menu a[aria-current="page"] {
  color: var(--color-primary);
  background: rgba(45, 106, 79, 0.08);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
}
.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text);
  transition: all var(--transition);
  border-radius: 2px;
}

/* ============================================
   HERO
   ============================================ */
.hero {
  padding: 5rem 0 4rem;
  background: linear-gradient(135deg, #f0faf4 0%, var(--color-bg) 60%);
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  top: -100px;
  right: -100px;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(82,183,136,0.12) 0%, transparent 70%);
  border-radius: 50%;
}

.hero .container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(45,106,79,0.1);
  color: var(--color-primary);
  padding: 0.375rem 1rem;
  border-radius: 50px;
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: 1.25rem;
  border: 1px solid rgba(45,106,79,0.2);
}

.hero h1 {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 4vw, 3rem);
  line-height: 1.25;
  color: var(--color-text);
  margin-bottom: 1.25rem;
}
.hero h1 em {
  color: var(--color-primary);
  font-style: italic;
}

.hero-subtitle {
  font-size: 1.125rem;
  color: var(--color-text-light);
  margin-bottom: 2rem;
  max-width: 520px;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 1.5rem;
}

.hero-disclosure {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  max-width: 480px;
  line-height: 1.5;
}

.hero-visual {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.hero-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  padding: 1.25rem;
  text-align: center;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition);
}
.hero-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); }
.hero-card-icon { font-size: 2rem; margin-bottom: 0.5rem; }
.hero-card p { font-size: 0.9rem; color: var(--color-text-light); font-weight: 500; }

.hero-card-answer {
  grid-column: span 2;
  background: var(--color-primary);
  border-color: var(--color-primary);
}
.hero-card-answer p { color: white; font-weight: 600; }

/* ============================================
   TRUST BAR
   ============================================ */
.trust-bar {
  background: var(--color-primary);
  padding: 1.25rem 0;
}
.trust-items {
  display: flex;
  justify-content: center;
  gap: 2.5rem;
  flex-wrap: wrap;
}
.trust-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: white;
  font-weight: 500;
  font-size: 0.9375rem;
}
.trust-icon { font-size: 1.125rem; }

/* ============================================
   SECTION HEADERS
   ============================================ */
.section-header {
  text-align: center;
  margin-bottom: 3rem;
}
.section-header h2 {
  font-family: var(--font-heading);
  font-size: clamp(1.625rem, 3vw, 2.25rem);
  color: var(--color-text);
  margin-bottom: 0.75rem;
}
.section-header p {
  color: var(--color-text-light);
  font-size: 1.0625rem;
  max-width: 560px;
  margin: 0 auto;
}

/* ============================================
   TOPICS GRID
   ============================================ */
.topics-section { padding: var(--section-padding); }

.topics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.5rem;
}

.topic-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-lg);
  padding: 2rem 1.5rem;
  text-decoration: none;
  color: inherit;
  transition: all var(--transition);
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  box-shadow: var(--shadow-sm);
}
.topic-card:hover {
  border-color: var(--color-primary-light);
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
  color: inherit;
}
.topic-icon { font-size: 2.5rem; }
.topic-card h3 {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  color: var(--color-text);
}
.topic-card p {
  color: var(--color-text-light);
  font-size: 0.9375rem;
  flex: 1;
}
.topic-link {
  color: var(--color-primary);
  font-weight: 600;
  font-size: 0.9375rem;
  margin-top: 0.5rem;
}

/* ============================================
   ARTICLES GRID
   ============================================ */
.articles-section {
  padding: var(--section-padding);
  background: var(--color-bg-alt);
}

.articles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
  margin-bottom: 2.5rem;
}

.article-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-lg);
  padding: 1.75rem;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}
.article-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
}
.article-tag {
  display: inline-block;
  background: rgba(45,106,79,0.1);
  color: var(--color-primary);
  padding: 0.25rem 0.75rem;
  border-radius: 50px;
  font-size: 0.8125rem;
  font-weight: 600;
  width: fit-content;
}
.article-card h3 {
  font-family: var(--font-heading);
  font-size: 1.125rem;
  line-height: 1.4;
}
.article-card h3 a {
  color: var(--color-text);
  text-decoration: none;
}
.article-card h3 a:hover { color: var(--color-primary); }
.article-card p {
  color: var(--color-text-light);
  font-size: 0.9375rem;
  flex: 1;
}
.article-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 0.75rem;
  border-top: 1px solid var(--color-border);
  font-size: 0.875rem;
  color: var(--color-text-muted);
}
.read-more {
  color: var(--color-primary);
  font-weight: 600;
}

.section-cta { text-align: center; }

/* ============================================
   AD SECTION
   ============================================ */
.ad-section {
  padding: 2rem 0;
  background: var(--color-bg);
}
.ad-label {
  text-align: center;
  font-size: 0.75rem;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.5rem;
}
.ad-placeholder {
  background: var(--color-bg-alt);
  border: 2px dashed var(--color-border);
  border-radius: var(--border-radius);
  padding: 2rem;
  text-align: center;
  color: var(--color-text-muted);
  font-size: 0.9rem;
  max-width: 728px;
  margin: 0 auto;
}

/* ============================================
   ABOUT STRIP
   ============================================ */
.about-strip {
  padding: var(--section-padding);
  background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 100%);
  color: white;
}
.about-strip-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}
.about-strip-text h2 {
  font-family: var(--font-heading);
  font-size: clamp(1.5rem, 3vw, 2rem);
  margin-bottom: 1rem;
  color: white;
}
.about-strip-text p {
  color: rgba(255,255,255,0.85);
  margin-bottom: 1rem;
  line-height: 1.75;
}
.about-strip .btn-outline {
  color: white;
  border-color: rgba(255,255,255,0.6);
  margin-top: 0.5rem;
}
.about-strip .btn-outline:hover {
  background: white;
  color: var(--color-primary-dark);
}
.about-strip-values { display: flex; flex-direction: column; gap: 1rem; }
.value-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: rgba(255,255,255,0.9);
  font-size: 0.9375rem;
  padding: 0.75rem 1rem;
  background: rgba(255,255,255,0.1);
  border-radius: var(--border-radius);
  border: 1px solid rgba(255,255,255,0.15);
}

/* ============================================
   SUBSCRIBE SECTION
   ============================================ */
.subscribe-section {
  padding: var(--section-padding);
  background: var(--color-bg-alt);
}
.subscribe-box {
  max-width: 560px;
  margin: 0 auto;
  text-align: center;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-lg);
  padding: 3rem 2rem;
  box-shadow: var(--shadow-md);
}
.subscribe-icon { font-size: 2.5rem; margin-bottom: 1rem; }
.subscribe-box h2 {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  margin-bottom: 0.75rem;
}
.subscribe-box p { color: var(--color-text-light); margin-bottom: 1.5rem; }
.subscribe-actions { margin-bottom: 1rem; }
.subscribe-note {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  margin-bottom: 0 !important;
}

/* ============================================
   FOOTER
   ============================================ */
.site-footer {
  background: var(--color-text);
  color: rgba(255,255,255,0.75);
  padding: 4rem 0 2rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 3rem;
  padding-bottom: 3rem;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}

.footer-brand .logo { color: white; margin-bottom: 1rem; }
.footer-brand .logo strong { color: var(--color-primary-light); }
.footer-brand p { font-size: 0.9rem; line-height: 1.7; }

.footer-nav h3 {
  color: white;
  font-size: 0.875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 1rem;
}
.footer-nav ul { display: flex; flex-direction: column; gap: 0.5rem; }
.footer-nav a {
  color: rgba(255,255,255,0.65);
  font-size: 0.9rem;
  transition: color var(--transition);
}
.footer-nav a:hover { color: var(--color-primary-light); }

.footer-bottom {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}
.footer-disclosure,
.footer-disclaimer {
  font-size: 0.8125rem;
  line-height: 1.6;
  color: rgba(255,255,255,0.5);
}
.footer-accessibility {
  font-size: 0.8125rem;
  color: rgba(255,255,255,0.5);
}
.footer-accessibility a { color: var(--color-primary-light); }
.footer-copyright {
  font-size: 0.8125rem;
  color: rgba(255,255,255,0.4);
  margin-top: 0.5rem;
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 900px) {
  .hero .container { grid-template-columns: 1fr; }
  .hero-visual { display: none; }
  .about-strip-inner { grid-template-columns: 1fr; gap: 2rem; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 2rem; }
  .footer-brand { grid-column: span 2; }
}

@media (max-width: 640px) {
  :root { --section-padding: 3rem 0; }

  .nav-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--color-surface);
    flex-direction: column;
    padding: 1rem;
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-md);
  }
  .nav-menu.open { display: flex; }
  .nav-toggle { display: flex; }

  .hero { padding: 3rem 0 2.5rem; }
  .hero-actions { flex-direction: column; }
  .hero-actions .btn { text-align: center; justify-content: center; }

  .trust-items { gap: 1rem; }
  .trust-item span:last-child { font-size: 0.875rem; }

  .footer-grid { grid-template-columns: 1fr; }
  .footer-brand { grid-column: span 1; }

  .cookie-banner { flex-direction: column; text-align: center; }
}

@media (max-width: 400px) {
  .topics-grid { grid-template-columns: 1fr; }
  .articles-grid { grid-template-columns: 1fr; }
}