/* ============================================
   RecoveryStack — Brand CSS
   ============================================ */

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

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

/* === Design Tokens === */
:root {
  /* Colors */
  --color-slate: #1A2332;
  --color-off-white: #FAFAF7;
  --color-ember: #D97757;
  --color-forest: #3D5A4A;
  --color-charcoal: #1A1A1A;
  --color-stone: #6B6B6B;
  --color-mist: #E8E6E0;
  --color-white: #FFFFFF;

  /* Typography */
  --font-heading: 'Space Grotesk', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-serif: 'Source Serif Pro', Georgia, serif;
  --font-mono: 'JetBrains Mono', 'Courier New', monospace;

  /* Spacing scale */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.5rem;
  --space-6: 2rem;
  --space-7: 2.5rem;
  --space-8: 3rem;
  --space-10: 4rem;
  --space-12: 5rem;
  --space-16: 6rem;
  --space-20: 8rem;

  /* Layout */
  --max-width-content: 720px;
  --max-width-wide: 1200px;
  --max-width-full: 1440px;
  --border-radius: 8px;
  --border-radius-lg: 16px;
}

body {
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.6;
  color: var(--color-charcoal);
  background: var(--color-off-white);
  font-weight: 400;
}

/* === Typography === */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  color: var(--color-slate);
  line-height: 1.2;
  letter-spacing: -0.02em;
}

h1 {
  font-size: clamp(2.25rem, 5vw, 3.5rem);
  margin-bottom: var(--space-6);
}

h2 {
  font-size: clamp(1.75rem, 3.5vw, 2.25rem);
  margin-top: var(--space-10);
  margin-bottom: var(--space-5);
  letter-spacing: -0.015em;
}

h3 {
  font-size: clamp(1.375rem, 2.5vw, 1.5rem);
  margin-top: var(--space-8);
  margin-bottom: var(--space-4);
}

h4 {
  font-size: 1.125rem;
  margin-top: var(--space-6);
  margin-bottom: var(--space-3);
  font-weight: 700;
}

p {
  margin-bottom: var(--space-5);
  max-width: 65ch;
}

a {
  color: var(--color-ember);
  text-decoration: none;
  transition: color 0.15s ease;
}

a:hover {
  color: var(--color-slate);
  text-decoration: underline;
}

strong {
  font-weight: 600;
  color: var(--color-slate);
}

em {
  font-style: italic;
}

blockquote {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 1.25rem;
  line-height: 1.5;
  border-left: 4px solid var(--color-ember);
  padding-left: var(--space-5);
  margin: var(--space-8) 0;
  color: var(--color-slate);
}

code {
  font-family: var(--font-mono);
  font-size: 0.9em;
  background: var(--color-mist);
  padding: 0.15em 0.4em;
  border-radius: 4px;
}

hr {
  border: none;
  border-top: 1px solid var(--color-mist);
  margin: var(--space-10) 0;
}

ul, ol {
  margin-bottom: var(--space-5);
  padding-left: var(--space-6);
}

li {
  margin-bottom: var(--space-2);
  max-width: 65ch;
}

table {
  width: 100%;
  border-collapse: collapse;
  margin: var(--space-6) 0;
  font-size: 0.95rem;
}

th, td {
  text-align: left;
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid var(--color-mist);
}

th {
  font-family: var(--font-heading);
  font-weight: 700;
  color: var(--color-slate);
  background: var(--color-mist);
  font-size: 0.9rem;
}

/* === Layout === */
.container {
  max-width: var(--max-width-wide);
  margin: 0 auto;
  padding: 0 var(--space-5);
}

.container-narrow {
  max-width: var(--max-width-content);
  margin: 0 auto;
  padding: 0 var(--space-5);
}

.container-full {
  max-width: var(--max-width-full);
  margin: 0 auto;
  padding: 0 var(--space-5);
}

/* === Header === */
.site-header {
  background: var(--color-off-white);
  border-bottom: 1px solid var(--color-mist);
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(8px);
  background: rgba(250, 250, 247, 0.95);
}

.header-inner {
  max-width: var(--max-width-wide);
  margin: 0 auto;
  padding: var(--space-4) var(--space-5);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.375rem;
  color: var(--color-slate);
  text-decoration: none;
  letter-spacing: -0.03em;
}

.logo:hover {
  color: var(--color-slate);
  text-decoration: none;
}

.logo-icon {
  display: inline-block;
  width: 28px;
  height: 28px;
  flex-shrink: 0;
}

.logo-slash {
  color: var(--color-ember);
}

.nav-primary {
  display: flex;
  align-items: center;
  gap: var(--space-6);
}

.nav-primary a {
  color: var(--color-slate);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.95rem;
  transition: color 0.15s ease;
}

.nav-primary a:hover {
  color: var(--color-ember);
  text-decoration: none;
}

@media (max-width: 900px) {
  .nav-primary {
    display: none;
  }
}

/* === Hero === */
.hero {
  padding: var(--space-16) 0 var(--space-12);
  background: linear-gradient(180deg, var(--color-off-white) 0%, rgba(232, 230, 224, 0.4) 100%);
}

.hero-inner {
  max-width: var(--max-width-content);
  margin: 0 auto;
  padding: 0 var(--space-5);
  text-align: center;
}

.hero h1 {
  font-size: clamp(2.5rem, 6vw, 4rem);
  margin-bottom: var(--space-5);
  letter-spacing: -0.03em;
  line-height: 1.05;
}

.hero-subhead {
  font-size: 1.25rem;
  color: var(--color-stone);
  max-width: 580px;
  margin: 0 auto var(--space-8);
  line-height: 1.5;
}

.hero-ctas {
  display: flex;
  gap: var(--space-4);
  justify-content: center;
  flex-wrap: wrap;
}

/* === Buttons === */
.btn {
  display: inline-block;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.95rem;
  padding: var(--space-3) var(--space-6);
  border-radius: var(--border-radius);
  text-decoration: none;
  transition: all 0.15s ease;
  cursor: pointer;
  border: 2px solid transparent;
  letter-spacing: -0.005em;
}

.btn-primary {
  background: var(--color-ember);
  color: var(--color-white);
}

.btn-primary:hover {
  background: var(--color-slate);
  color: var(--color-white);
  text-decoration: none;
}

.btn-secondary {
  background: transparent;
  color: var(--color-slate);
  border-color: var(--color-slate);
}

.btn-secondary:hover {
  background: var(--color-slate);
  color: var(--color-white);
  text-decoration: none;
}

/* === Trust strip === */
.trust-strip {
  text-align: center;
  padding: var(--space-6) var(--space-5);
  font-family: var(--font-serif);
  font-style: italic;
  color: var(--color-stone);
  font-size: 1.05rem;
  border-bottom: 1px solid var(--color-mist);
}

/* === Sections === */
.section {
  padding: var(--space-16) 0;
}

.section-heading {
  font-family: var(--font-heading);
  text-align: center;
  font-size: clamp(1.75rem, 3.5vw, 2.5rem);
  margin-bottom: var(--space-3);
}

.section-subhead {
  text-align: center;
  color: var(--color-stone);
  max-width: 600px;
  margin: 0 auto var(--space-10);
  font-size: 1.05rem;
}

/* === Pillar Cards === */
.pillar-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-6);
  max-width: var(--max-width-wide);
  margin: 0 auto;
  padding: 0 var(--space-5);
}

.pillar-card {
  background: var(--color-white);
  border: 1px solid var(--color-mist);
  border-radius: var(--border-radius-lg);
  padding: var(--space-7);
  transition: all 0.2s ease;
  display: flex;
  flex-direction: column;
  text-decoration: none;
  color: inherit;
}

.pillar-card:hover {
  border-color: var(--color-ember);
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(26, 35, 50, 0.08);
  text-decoration: none;
}

.pillar-card-tag {
  font-family: var(--font-heading);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-ember);
  margin-bottom: var(--space-3);
  font-weight: 700;
}

.pillar-card h3 {
  font-size: 1.5rem;
  margin-top: 0;
  margin-bottom: var(--space-3);
  line-height: 1.25;
}

.pillar-card p {
  color: var(--color-stone);
  font-size: 0.95rem;
  margin-bottom: var(--space-4);
  flex: 1;
}

.pillar-card-cta {
  color: var(--color-ember);
  font-weight: 600;
  font-size: 0.95rem;
}

/* === Article Grid (Recent Reviews) === */
.article-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-6);
  max-width: var(--max-width-wide);
  margin: 0 auto;
  padding: 0 var(--space-5);
}

.article-card {
  background: var(--color-white);
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  text-decoration: none;
  color: inherit;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  display: flex;
  flex-direction: column;
}

.article-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(26, 35, 50, 0.08);
  text-decoration: none;
}

.article-card-image {
  aspect-ratio: 16 / 10;
  background: linear-gradient(135deg, var(--color-slate) 0%, var(--color-forest) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-off-white);
  font-family: var(--font-heading);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.article-card-body {
  padding: var(--space-5);
}

.article-card-tag {
  font-family: var(--font-heading);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-ember);
  font-weight: 700;
  margin-bottom: var(--space-2);
}

.article-card h3 {
  font-size: 1.2rem;
  margin-top: 0;
  margin-bottom: var(--space-3);
  line-height: 1.3;
}

.article-card-meta {
  font-size: 0.85rem;
  color: var(--color-stone);
}

/* === Email Capture === */
.email-capture {
  background: var(--color-slate);
  color: var(--color-off-white);
  padding: var(--space-16) var(--space-5);
  text-align: center;
}

.email-capture h2 {
  color: var(--color-off-white);
  margin-top: 0;
  margin-bottom: var(--space-4);
}

.email-capture p {
  color: rgba(250, 250, 247, 0.85);
  max-width: 560px;
  margin: 0 auto var(--space-8);
}

.email-form {
  display: flex;
  gap: var(--space-3);
  max-width: 480px;
  margin: 0 auto;
  flex-wrap: wrap;
  justify-content: center;
}

.email-form input[type="email"] {
  flex: 1;
  min-width: 240px;
  padding: var(--space-3) var(--space-4);
  font-family: var(--font-body);
  font-size: 1rem;
  border: 2px solid transparent;
  border-radius: var(--border-radius);
  background: var(--color-off-white);
  color: var(--color-charcoal);
}

.email-form input[type="email"]:focus {
  outline: none;
  border-color: var(--color-ember);
}

.email-trust {
  margin-top: var(--space-4);
  font-size: 0.85rem;
  color: rgba(250, 250, 247, 0.6);
}

/* === Author Block === */
.author-block {
  display: flex;
  gap: var(--space-6);
  align-items: center;
  padding: var(--space-8);
  background: var(--color-white);
  border-radius: var(--border-radius-lg);
  border: 1px solid var(--color-mist);
  max-width: var(--max-width-content);
  margin: var(--space-12) auto;
}

.author-photo {
  width: 96px;
  height: 96px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-slate), var(--color-forest));
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-heading);
  font-weight: 700;
  color: var(--color-off-white);
  font-size: 2rem;
}

.author-block h3 {
  margin-top: 0;
  margin-bottom: var(--space-2);
  font-size: 1.25rem;
}

.author-block p {
  color: var(--color-stone);
  font-size: 0.95rem;
  margin-bottom: var(--space-3);
}

.author-block-link {
  font-weight: 600;
  color: var(--color-ember);
}

@media (max-width: 600px) {
  .author-block {
    flex-direction: column;
    text-align: center;
  }
}

/* === Article Pages === */
.article-page {
  background: var(--color-off-white);
}

.article-hero {
  padding: var(--space-12) 0 var(--space-8);
  background: var(--color-off-white);
}

.article-hero-inner {
  max-width: var(--max-width-content);
  margin: 0 auto;
  padding: 0 var(--space-5);
}

.article-tag {
  font-family: var(--font-heading);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-ember);
  font-weight: 700;
  margin-bottom: var(--space-4);
  display: block;
}

.article-hero h1 {
  font-size: clamp(2rem, 4.5vw, 3rem);
  margin-bottom: var(--space-5);
  line-height: 1.1;
  letter-spacing: -0.025em;
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  align-items: center;
  font-size: 0.9rem;
  color: var(--color-stone);
  margin-bottom: var(--space-4);
}

.article-meta-separator {
  color: var(--color-mist);
}

.article-content {
  max-width: var(--max-width-content);
  margin: 0 auto;
  padding: var(--space-8) var(--space-5) var(--space-16);
}

.article-content > p:first-of-type {
  font-size: 1.2rem;
  line-height: 1.6;
  color: var(--color-slate);
  font-family: var(--font-serif);
  margin-bottom: var(--space-8);
}

.article-content h2 {
  font-size: clamp(1.625rem, 3vw, 2rem);
  margin-top: var(--space-12);
  margin-bottom: var(--space-5);
  padding-top: var(--space-3);
  border-top: 2px solid var(--color-mist);
}

.article-content h2:first-of-type {
  border-top: none;
  padding-top: 0;
}

.article-content h3 {
  font-size: 1.375rem;
  margin-top: var(--space-8);
  margin-bottom: var(--space-4);
}

.article-content p {
  font-size: 1.0625rem;
  line-height: 1.7;
}

.key-takeaways {
  background: var(--color-mist);
  border-left: 4px solid var(--color-ember);
  padding: var(--space-6) var(--space-7);
  margin: var(--space-8) 0;
  border-radius: 0 var(--border-radius) var(--border-radius) 0;
}

.key-takeaways h3 {
  margin-top: 0;
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-ember);
  margin-bottom: var(--space-4);
}

.key-takeaways ul {
  margin-bottom: 0;
  padding-left: var(--space-5);
}

.key-takeaways li {
  margin-bottom: var(--space-3);
  font-size: 1rem;
  line-height: 1.55;
}

.key-takeaways li:last-child {
  margin-bottom: 0;
}

.callout {
  background: var(--color-white);
  border: 1px solid var(--color-mist);
  padding: var(--space-6) var(--space-7);
  border-radius: var(--border-radius);
  margin: var(--space-6) 0;
  font-size: 1.05rem;
}

.callout-warn {
  border-left: 4px solid var(--color-ember);
}

/* === FAQ === */
.faq-section {
  background: var(--color-mist);
  padding: var(--space-12) 0;
  margin-top: var(--space-12);
}

.faq-section-inner {
  max-width: var(--max-width-content);
  margin: 0 auto;
  padding: 0 var(--space-5);
}

.faq-item {
  margin-bottom: var(--space-6);
  padding-bottom: var(--space-5);
  border-bottom: 1px solid rgba(26, 35, 50, 0.12);
}

.faq-item:last-child {
  border-bottom: none;
  margin-bottom: 0;
}

.faq-item h3 {
  font-size: 1.125rem;
  margin-top: 0;
  margin-bottom: var(--space-3);
  color: var(--color-slate);
}

.faq-item p {
  font-size: 1rem;
  margin-bottom: 0;
}

/* === Footer === */
.site-footer {
  background: var(--color-slate);
  color: rgba(250, 250, 247, 0.75);
  padding: var(--space-12) var(--space-5) var(--space-6);
}

.footer-inner {
  max-width: var(--max-width-wide);
  margin: 0 auto;
}

.footer-cols {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-8);
  margin-bottom: var(--space-10);
}

@media (max-width: 800px) {
  .footer-cols {
    grid-template-columns: 1fr 1fr;
  }
}

.footer-col h4 {
  font-family: var(--font-heading);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-off-white);
  margin-bottom: var(--space-4);
  margin-top: 0;
}

.footer-col ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-col li {
  margin-bottom: var(--space-2);
}

.footer-col a {
  color: rgba(250, 250, 247, 0.7);
  text-decoration: none;
  font-size: 0.95rem;
  transition: color 0.15s ease;
}

.footer-col a:hover {
  color: var(--color-ember);
  text-decoration: none;
}

.footer-brand {
  max-width: 320px;
}

.footer-brand .logo {
  color: var(--color-off-white);
  margin-bottom: var(--space-3);
}

.footer-brand p {
  color: rgba(250, 250, 247, 0.65);
  font-size: 0.95rem;
  margin-bottom: 0;
}

.footer-bottom {
  border-top: 1px solid rgba(250, 250, 247, 0.1);
  padding-top: var(--space-6);
  font-size: 0.85rem;
  color: rgba(250, 250, 247, 0.5);
  text-align: center;
}

/* === Category Grid (Browse by Category) === */
.category-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: var(--space-4);
  max-width: var(--max-width-wide);
  margin: 0 auto;
  padding: 0 var(--space-5);
}

.category-tile {
  background: var(--color-white);
  border: 1px solid var(--color-mist);
  border-radius: var(--border-radius);
  padding: var(--space-6);
  text-align: center;
  text-decoration: none;
  color: var(--color-slate);
  transition: all 0.2s ease;
}

.category-tile:hover {
  border-color: var(--color-ember);
  transform: translateY(-2px);
  color: var(--color-slate);
  text-decoration: none;
}

.category-tile h3 {
  font-size: 1.125rem;
  margin: 0 0 var(--space-2);
}

.category-tile-meta {
  font-size: 0.85rem;
  color: var(--color-stone);
}

/* === Page hero (non-article pages) === */
.page-hero {
  padding: var(--space-12) 0 var(--space-8);
  background: var(--color-off-white);
  text-align: center;
}

.page-hero-inner {
  max-width: var(--max-width-content);
  margin: 0 auto;
  padding: 0 var(--space-5);
}

.page-hero h1 {
  font-size: clamp(2rem, 4.5vw, 3rem);
  margin-bottom: var(--space-4);
}

.page-hero-subhead {
  font-size: 1.15rem;
  color: var(--color-stone);
  max-width: 580px;
  margin: 0 auto;
}

.page-content {
  max-width: var(--max-width-content);
  margin: 0 auto;
  padding: var(--space-8) var(--space-5) var(--space-16);
}

.page-content p, .page-content li {
  font-size: 1.0625rem;
  line-height: 1.7;
}

/* === Utilities === */
.text-center { text-align: center; }
.text-stone { color: var(--color-stone); }
.text-ember { color: var(--color-ember); }

.mt-0 { margin-top: 0; }
.mb-0 { margin-bottom: 0; }
.mt-8 { margin-top: var(--space-8); }
.mb-8 { margin-bottom: var(--space-8); }

/* === Responsive tweaks === */
@media (max-width: 600px) {
  body {
    font-size: 16px;
  }

  .section {
    padding: var(--space-10) 0;
  }

  .hero {
    padding: var(--space-10) 0 var(--space-8);
  }

  .article-content > p:first-of-type {
    font-size: 1.1rem;
  }
}