/* Scholar-Adapted Business Theme — ByteMind Ltd */
/* Inspired by academic editorial design, refined for professional services */

@import url('https://fonts.googleapis.com/css2?family=Newsreader:ital,opsz,wght@0,6..72,400;0,6..72,500;1,6..72,400&family=Inter:wght@400;450;500;600&family=IBM+Plex+Mono:wght@400;500&display=swap');

:root {
  --color-background: #faf9f3;
  --color-foreground: #1f1e1a;
  --color-card: #fdfcf8;
  --color-card-foreground: #1f1e1a;
  --color-muted: #f2efe5;
  --color-muted-foreground: #6a6760;
  --color-border: #e2ddd1;
  --color-ring: #1a3a2a;

  --color-primary: #1a3a2a;
  --color-primary-foreground: #faf9f3;
  --color-primary-50: #edf3ef;
  --color-primary-100: #d6e4db;
  --color-primary-200: #a9c7b3;
  --color-primary-300: #79a88a;
  --color-primary-400: #4d8763;
  --color-primary-500: #306d49;
  --color-primary-600: #1f5335;
  --color-primary-700: #1a3a2a;
  --color-primary-800: #143024;
  --color-primary-900: #0e2419;

  --state-success: #306d49;
  --state-success-bg: #edf3ef;
  --state-warning: #9e6b1f;
  --state-warning-bg: #faf4e6;
  --state-error: #a23b32;
  --state-error-bg: #fdf2f0;
  --state-info: #2f557a;
  --state-info-bg: #eef3f7;

  --color-bg-body: var(--color-background);
  --color-bg-surface: var(--color-card);
  --color-bg-subtle: var(--color-muted);
  --color-border: var(--color-border);
  --color-border-light: #eae5d9;
  --color-text-primary: var(--color-foreground);
  --color-text-secondary: #3d3b36;
  --color-text-muted: var(--color-muted-foreground);
  --color-link: var(--color-primary);
  --color-link-hover: var(--color-primary-600);
  --color-focus-ring: rgba(26, 58, 42, 0.2);

  --font-serif: 'Newsreader', 'Georgia', 'Times New Roman', serif;
  --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
  --font-mono: 'IBM Plex Mono', 'SFMono-Regular', monospace;

  --radius-sm: 4px; --radius-md: 8px; --radius-lg: 12px; --radius-xl: 16px; --radius-full: 9999px;

  --shadow-card: 0 1px 2px rgba(31, 30, 26, 0.04);
  --shadow-float: 0 14px 34px -14px rgba(14, 36, 25, 0.18);

  --space-1: 0.25rem; --space-2: 0.5rem; --space-3: 0.75rem; --space-4: 1rem;
  --space-5: 1.25rem; --space-6: 1.5rem; --space-8: 2rem; --space-10: 2.5rem;
  --space-12: 3rem; --space-16: 4rem; --space-20: 5rem; --space-24: 6rem; --space-32: 8rem;

  --container-max: 1200px;
  --container-padding: 1.5rem;
}

/* ── Legacy token compatibility (old design system references) ── */
:root {
  --font-heading: var(--font-serif);
  --font-body: var(--font-sans);
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  --font-weight-extrabold: 700;
  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-body: 1rem;
  --text-h1: clamp(30px, 3.8vw, 46px);
  --text-h3: 1.375rem;
  --text-h4: 1.125rem;
  --leading-tight: 1.15;
  --leading-normal: 1.6;
  --leading-relaxed: 1.7;
  --tracking-wide: 0.08em;
  --color-accent-500: var(--color-primary-400);
  --color-accent-600: var(--color-primary-600);
  --color-neutral-100: var(--color-primary-50);
  --color-neutral-900: var(--color-primary-900);
  --shadow-sm: var(--shadow-card);
  --shadow-floating: var(--shadow-float);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}
body {
  font-family: var(--font-sans); font-size: 16px; line-height: 1.6;
  color: var(--color-text-secondary); background: var(--color-bg-body); font-weight: 400; overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; transition: color 0.2s ease; }

/* ── Focus visibility ── */
:focus-visible {
  outline: 2px solid var(--color-ring);
  outline-offset: 3px;
  border-radius: 2px;
}
.btn:focus-visible, .mobile-menu-btn:focus-visible { outline-offset: 4px; }

/* ── Typography ── */
.display {
  font-family: var(--font-serif); font-weight: 500;
  font-size: clamp(40px, 5.4vw, 68px); line-height: 1.05; letter-spacing: -0.02em; text-wrap: balance;
}
h1 {
  font-family: var(--font-serif); font-weight: 500;
  font-size: clamp(30px, 3.8vw, 46px); line-height: 1.1; letter-spacing: -0.015em; text-wrap: balance;
  color: var(--color-text-primary);
}
h2 {
  font-family: var(--font-serif); font-weight: 500;
  font-size: clamp(24px, 2.6vw, 34px); line-height: 1.16; letter-spacing: -0.01em; text-wrap: balance;
  color: var(--color-text-primary);
}
h3 {
  font-family: var(--font-serif); font-weight: 500; font-size: 20px; line-height: 1.3; letter-spacing: -0.005em;
  color: var(--color-text-primary);
}
h4 { font-family: var(--font-sans); font-weight: 600; font-size: 1rem; color: var(--color-text-primary); }
p { margin-bottom: 1.25rem; color: var(--color-text-secondary); line-height: 1.6; }

.eyebrow {
  font-family: var(--font-sans); font-weight: 600; font-size: 12px; line-height: 1.2;
  letter-spacing: 0.14em; text-transform: uppercase; color: var(--color-muted-foreground);
}
.prose-serif { font-family: var(--font-serif); font-weight: 400; font-size: 18px; line-height: 1.7; }
.text-mono { font-family: var(--font-mono); }

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

/* ── Navigation ── */
.navbar {
  background: rgba(250, 249, 243, 0.88); backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid transparent; padding: var(--space-3) 0; position: sticky; top: 0;
  z-index: 1000; transition: border-color 0.3s ease;
}
.navbar.scrolled { border-bottom-color: var(--color-border); }
.nav-container { display: flex; justify-content: space-between; align-items: center; }

.logo-link {
  font-family: var(--font-serif); font-weight: 500; font-size: 1.2rem;
  color: var(--color-primary); text-decoration: none; letter-spacing: -0.01em;
}

.nav-links { display: flex; gap: 2rem; align-items: center; }
.nav-links a {
  font-family: var(--font-sans); font-weight: 500; color: var(--color-text-secondary);
  font-size: 0.8rem; position: relative; padding: 0.25rem 0;
  letter-spacing: 0.04em; text-transform: uppercase;
}
.nav-links a:hover { color: var(--color-primary); }
.nav-links a.active { color: var(--color-primary-700); }
.nav-links a::after {
  content: ''; position: absolute; width: 0; height: 1.5px; bottom: 0; left: 0;
  background: var(--color-primary-600); transition: width 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}
.nav-links a:hover::after, .nav-links a.active::after { width: 100%; }

.mobile-menu-btn {
  display: none; flex-direction: column; gap: 4px; cursor: pointer;
  padding: var(--space-2); background: none; border: none;
  -webkit-appearance: none; appearance: none;
}
.mobile-menu-btn span { display: block; width: 22px; height: 2px; background: var(--color-text-primary); border-radius: 2px; transition: all 0.3s ease; }
.mobile-menu-btn.open span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.mobile-menu-btn.open span:nth-child(2) { opacity: 0; }
.mobile-menu-btn.open span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

/* ── Buttons ── */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 0.5rem;
  padding: 0.65rem 1.5rem; border-radius: var(--radius-md); font-family: var(--font-sans);
  font-weight: 500; font-size: 0.85rem; cursor: pointer;
  transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1); border: none;
}
.btn-primary { background: var(--color-primary); color: var(--color-primary-foreground); }
.btn-primary:hover { background: var(--color-primary-800); transform: translateY(-1px); }
.btn-secondary { background: var(--color-card); color: var(--color-text-secondary); border: 1px solid var(--color-border); }
.btn-secondary:hover { border-color: var(--color-primary-400); color: var(--color-primary); background: var(--color-primary-50); }
.btn-outline { background: transparent; color: var(--color-card); border: 1px solid rgba(255,255,255,0.3); }
.btn-outline:hover { background: rgba(255,255,255,0.08); border-color: rgba(255,255,255,0.5); }
.btn-sm { padding: 0.45rem 1rem; font-size: 0.78rem; }

/* ── Badge ── */
.badge {
  display: inline-block; padding: 0.25rem 0.75rem; background: var(--color-primary-50);
  color: var(--color-primary); border-radius: var(--radius-full); font-size: 0.675rem;
  font-family: var(--font-sans); font-weight: 600; text-transform: uppercase;
  letter-spacing: 0.08em; border: 1px solid rgba(26, 58, 42, 0.08);
}

/* ── Cards ── */
.card {
  background: var(--color-card); border: 1px solid var(--color-border);
  border-radius: var(--radius-lg); padding: var(--space-8);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}
.card:hover { border-color: var(--color-primary-200); box-shadow: 0 4px 20px rgba(26, 58, 42, 0.06); }

.feature-card {
  background: var(--color-card); border: 1px solid var(--color-border);
  border-radius: var(--radius-lg); padding: var(--space-8);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative; overflow: hidden;
}
.feature-card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 2px;
  background: var(--color-primary-400); transform: scaleX(0);
  transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}
.feature-card:hover { border-color: var(--color-primary-200); box-shadow: 0 4px 20px rgba(26, 58, 42, 0.06); transform: translateY(-2px); }
.feature-card:hover::before { transform: scaleX(1); }

.report-card {
  background: var(--color-card); border: 1px solid var(--color-border);
  border-left: 3px solid var(--color-primary); border-radius: 0 var(--radius-md) var(--radius-md) 0;
  padding: var(--space-10); transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}
.report-card:hover { box-shadow: 0 4px 20px rgba(26, 58, 42, 0.06); border-left-color: var(--color-primary-600); background: linear-gradient(to right, var(--color-primary-50) 0%, transparent 8%); }

/* ── CTA Banner ── */
.cta-banner {
  position: relative; overflow: hidden;
  background: var(--color-primary-900);
  color: var(--color-primary-foreground); padding: var(--space-20) var(--space-8);
  border-radius: var(--radius-xl); text-align: center;
}
.cta-banner::before {
  content: ''; position: absolute; inset: 0;
  background-image: radial-gradient(circle, rgba(255,255,255,0.03) 1px, transparent 1px);
  background-size: 20px 20px; pointer-events: none;
}
.cta-banner h2 { color: var(--color-primary-foreground); font-family: var(--font-serif); font-size: clamp(24px, 3vw, 34px); }
.cta-banner p { color: rgba(250, 249, 243, 0.7); font-size: 1.05rem; max-width: 480px; margin: 0 auto 2rem auto; }
.cta-banner .btn-outline:hover { background: rgba(255,255,255,0.12); }

/* ── Footer ── */
.footer {
  margin-top: var(--space-24); padding: var(--space-20) 0;
  background: var(--color-primary-900); color: var(--color-primary-foreground);
}
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: var(--space-10); text-align: left; margin-bottom: var(--space-10); }
.footer-col h4 { font-family: var(--font-sans); font-weight: 600; font-size: 0.675rem; text-transform: uppercase; letter-spacing: 0.1em; color: rgba(250, 249, 243, 0.45); margin-bottom: var(--space-5); }
.footer-col a { display: block; color: rgba(250, 249, 243, 0.65); font-size: 0.875rem; margin-bottom: var(--space-3); transition: color 0.2s; }
.footer-col a:hover { color: rgba(250, 249, 243, 0.9); }
.footer-brand-name { font-family: var(--font-serif); font-weight: 500; font-size: 1.15rem; color: rgba(250, 249, 243, 0.9); margin-bottom: 0.5rem; }
.footer-brand-desc { font-size: 0.875rem; color: rgba(250, 249, 243, 0.65); max-width: 280px; line-height: 1.6; }
.footer-bottom { border-top: 1px solid rgba(250, 249, 243, 0.08); padding-top: var(--space-6); text-align: center; font-size: 0.75rem; color: rgba(250, 249, 243, 0.55); }

/* ── Grid ── */
.grid-2 { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: var(--space-10); }
.grid-3 { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: var(--space-10); }
.grid-2-1 { display: grid; grid-template-columns: 2fr 1fr; gap: var(--space-10); }

/* ── Spacing ── */
.section { padding: var(--space-20) 0; }
.section-rule { border: none; border-top: 1px solid var(--color-border); margin: var(--space-12) 0; }
.section-header { text-align: center; max-width: 640px; margin: 0 auto var(--space-12); }

/* ── Hero ── */
.hero-wrapper { text-align: center; max-width: 760px; margin: 0 auto; padding: var(--space-16) 0; }
.hero-wrapper .accent-bar { margin: 0 auto var(--space-6) auto; }
.hero-subtitle { font-family: var(--font-serif); font-size: 1.2rem; font-weight: 400; font-style: italic; color: var(--color-muted-foreground); max-width: 580px; margin: 0 auto 2.25rem auto; line-height: 1.65; }

/* ── Interior page hero ── */
.page-hero {
  text-align: center;
  max-width: 760px;
  margin: 0 auto;
  padding: var(--space-16) 0 var(--space-12);
}
.page-hero .accent-bar { margin: 0 auto var(--space-6) auto; }
.page-hero .hero-intro {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  line-height: 1.7;
  color: var(--color-muted-foreground);
  max-width: 600px;
  margin: 0 auto;
}

/* ── Lead paragraph ── */
.lead {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  line-height: 1.7;
  color: var(--color-text-secondary);
}

/* ── Editorial lists: capabilities, steps, principles ── */
.capability-list,
.steps,
.principle-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-12);
}
.capability-item,
.step,
.principle {
  border-top: 1px solid var(--color-border);
  padding-top: var(--space-8);
}
.capability-num {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  color: var(--color-primary-500);
  margin-bottom: var(--space-4);
}
.capability-item h3,
.step h4,
.principle h4 { margin-bottom: var(--space-3); }
.capability-item p,
.step p,
.principle p { margin-bottom: 0; }

/* ── Featured research (editorial block, not a card) ── */
.research-feature {
  border-left: 3px solid var(--color-primary);
  padding: var(--space-4) var(--space-8);
  max-width: 760px;
  margin: 0 auto;
  text-align: left;
}
.research-feature h3 { margin: var(--space-3) 0 var(--space-2); }

/* ── Service card lists ── */
.service-list { list-style: none; margin: var(--space-6) 0; }
.service-list li {
  padding: var(--space-3) 0;
  border-bottom: 1px solid var(--color-border-light);
  font-size: 0.95rem;
}
.service-list li:last-child { border-bottom: none; }
.service-outcome {
  margin: 0;
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-border-light);
  font-size: var(--text-sm);
  font-style: italic;
  color: var(--color-text-muted);
}

/* ── Founder block (about page, understated) ── */
.founder-card {
  display: grid;
  grid-template-columns: 150px 1fr;
  gap: var(--space-10);
  align-items: start;
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-10);
  max-width: 860px;
  margin: 0 auto;
}
.founder-photo {
  width: 150px;
  height: auto;
  border-radius: var(--radius-lg);
}
.founder-card .founder-subtitle { margin-bottom: var(--space-5); }
.credential-line {
  font-family: var(--font-sans);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-muted-foreground);
  margin-top: var(--space-5);
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-border-light);
}

/* ── Inline link row ── */
.link-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-8);
  margin-top: var(--space-8);
}

/* ── About Page ── */
.hero-grid { display: grid; grid-template-columns: minmax(0, 340px) 1fr; gap: var(--space-20); align-items: center; padding: var(--space-20) 0 var(--space-12); }
.profile-img { border-radius: var(--radius-lg); box-shadow: 0 4px 20px rgba(14, 36, 25, 0.08); width: 100%; max-width: 280px; }
.badge-row { display: flex; gap: var(--space-2); margin-top: var(--space-6); flex-wrap: wrap; }
.founder-subtitle { font-family: var(--font-sans); font-weight: 600; color: var(--color-primary-600); font-size: 1.05rem; margin-bottom: var(--space-5); }
.blockquote-accent { border-left: 3px solid var(--color-primary-400); padding: var(--space-4) var(--space-6); margin: var(--space-10) 0; font-family: var(--font-serif); font-style: italic; font-size: 1rem; line-height: 1.65; color: var(--color-text-secondary); background: var(--color-primary-50); border-radius: 0 var(--radius-md) var(--radius-md) 0; }
.stat-grid { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-6); margin-top: var(--space-6); }
.stat-card { padding: var(--space-5); background: var(--color-primary-50); border-radius: var(--radius-md); }
.stat-card h4 { margin-bottom: var(--space-2); }
.stat-card p { font-size: 0.875rem; margin: 0; }

/* ── Tier Icon ── */
.tier-icon {
  width: 48px; height: 48px; background: var(--color-primary-50); color: var(--color-primary-500);
  border-radius: var(--radius-lg); display: flex; align-items: center; justify-content: center;
  font-family: var(--font-serif); font-size: 1.25rem; font-weight: 500; margin-bottom: 1.5rem;
  transition: all 0.3s ease;
}
.feature-card:hover .tier-icon { background: var(--color-primary-100); color: var(--color-primary-700); }

/* ── Report Label ── */
.report-label {
  display: inline-block; font-family: var(--font-sans); font-size: 0.675rem;
  text-transform: uppercase; letter-spacing: 0.08em; color: var(--color-primary-600);
  font-weight: 600; margin-bottom: var(--space-3);
}

/* ── Caption ── */
.caption { font-family: var(--font-sans); font-size: 0.75rem; color: var(--color-muted-foreground); margin-bottom: var(--space-3); }

/* ── Accent bar ── */
.accent-bar { width: 48px; height: 2px; background: var(--color-primary-400); border-radius: var(--radius-full); }

/* ── Skip link ── */
.skip-link {
  position: absolute; left: -9999px; top: 0; z-index: 3000;
  background: var(--color-primary); color: var(--color-primary-foreground);
  padding: 0.65rem 1.25rem; border-radius: 0 0 var(--radius-md) 0;
  font-family: var(--font-sans); font-weight: 600; font-size: 0.85rem;
}
.skip-link:focus { left: 0; }

/* ── Process cards (homepage) ── */
.process-card .tier-icon { font-family: var(--font-mono); font-size: 0.95rem; color: var(--color-primary-600); }

/* ── Section link row ── */
.section-link-row { text-align: center; margin-top: var(--space-10); }

/* ── Form note ── */
.form-note { font-size: 0.8rem; color: var(--color-text-muted); margin-top: var(--space-3); }

/* ── Inline Link ── */
.inline-link { color: var(--color-primary); font-weight: 500; text-decoration: underline; text-underline-offset: 3px; text-decoration-color: rgba(26, 58, 42, 0.2); transition: text-decoration-color 0.2s; }
.inline-link:hover { text-decoration-color: var(--color-primary); }

/* ── Utilities ── */
.text-center { text-align: center; }
.mt-0 { margin-top: 0; }
.mb-0 { margin-bottom: 0; }

/* ── Animations ── */
@keyframes fadeInUp { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: translateY(0); } }
.animate-fade-in-up { animation: fadeInUp 0.9s cubic-bezier(0.16, 1, 0.3, 1) forwards; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .animate-fade-in-up { animation: none; }
  *, *::before, *::after { transition-duration: 0.01ms !important; animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; }
}

/* ── Responsive ── */
@media (max-width: 768px) {
  .display { font-size: clamp(32px, 7vw, 48px); }
  h1 { font-size: clamp(26px, 5vw, 36px); }
  h2 { font-size: clamp(20px, 4vw, 28px); }
  .nav-links { display: none; }
  .nav-links.active { display: flex; flex-direction: column; position: absolute; top: 100%; left: 0; right: 0; background: rgba(250,249,243,0.98); backdrop-filter: blur(16px); padding: var(--space-8); gap: var(--space-6); border-bottom: 1px solid var(--color-border); }
  .mobile-menu-btn { display: flex; }
  .hero-grid { grid-template-columns: 1fr; gap: var(--space-8); padding: var(--space-12) 0 var(--space-8); }
  .stat-grid, .grid-2-1 { grid-template-columns: 1fr; }
  .capability-list, .steps, .principle-list { grid-template-columns: 1fr; gap: var(--space-8); }
  .founder-card { grid-template-columns: 1fr; gap: var(--space-8); padding: var(--space-8); }
  .footer-grid { grid-template-columns: 1fr; }
  .section { padding: var(--space-20) 0; }
  .cta-banner { padding: var(--space-16) var(--space-6); }
}