/* ============================================
   CoachingBusiness101.com — Design System
   LIGHT THEME — Clean, Professional, Trustworthy
   Static HTML5 / Vanilla CSS3
   ============================================ */

/* --- Google Fonts --- */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&display=swap');

/* --- Design Tokens --- */
:root {
  /* Brand */
  --brand-teal: #067788;
  --brand-teal-light: #0a9bb0;
  --brand-teal-bg: rgba(6, 119, 136, 0.06);
  --brand-orange: #f1642b;
  --brand-orange-hover: #d9521d;
  --brand-orange-bg: rgba(241, 100, 43, 0.06);

  /* Surfaces — LIGHT */
  --bg-primary: #ffffff;
  --bg-secondary: #f8fafb;
  --bg-card: #ffffff;
  --bg-card-hover: #f3f6f8;
  --bg-dark: #0c1425;
  --bg-dark-card: #162033;

  /* Text */
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #94a3b8;
  --text-on-dark: #f1f5f9;

  /* Borders */
  --border-subtle: #e2e8f0;
  --border-hover: #cbd5e1;

  /* Spacing */
  --section-pad: clamp(72px, 10vw, 120px);
  --container-max: 1200px;
  --container-narrow: 800px;

  /* Radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 28px;

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
  --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.06);
  --shadow-card-hover: 0 12px 32px rgba(0, 0, 0, 0.1);
  --shadow-glow-teal: 0 4px 24px rgba(6, 119, 136, 0.15);

  /* Transitions */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --transition-base: 0.3s var(--ease-out);
}

/* --- 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;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  font-size: 16px;
  line-height: 1.7;
  color: var(--text-primary);
  background: var(--bg-primary);
  overflow-x: hidden;
}

img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; transition: color var(--transition-base); }
ul, ol { list-style: none; }

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

h1 { font-size: clamp(2.4rem, 5vw, 3.8rem); font-weight: 800; }
h2 { font-size: clamp(1.8rem, 3.5vw, 2.8rem); }
h3 { font-size: clamp(1.3rem, 2.5vw, 1.6rem); }

p { color: var(--text-secondary); max-width: 70ch; }

.eyebrow {
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--brand-teal);
  margin-bottom: 12px;
}

.gradient-text {
  background: linear-gradient(135deg, var(--brand-teal), var(--brand-orange));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* --- Layout --- */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
}

.container--narrow { max-width: var(--container-narrow); }

section {
  padding: var(--section-pad) 0;
  position: relative;
}

.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: center; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  font-family: 'Inter', sans-serif;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  border: none;
  cursor: pointer;
  transition: all var(--transition-base);
  white-space: nowrap;
}

.btn--primary {
  background: var(--brand-orange);
  color: #fff;
  box-shadow: 0 4px 16px rgba(241, 100, 43, 0.25);
}

.btn--primary:hover {
  background: var(--brand-orange-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(241, 100, 43, 0.35);
}

.btn--secondary {
  background: transparent;
  color: var(--text-primary);
  border: 1.5px solid var(--border-hover);
}

.btn--secondary:hover {
  border-color: var(--brand-teal);
  color: var(--brand-teal);
  background: var(--brand-teal-bg);
}

.btn--ghost {
  background: transparent;
  color: var(--brand-teal);
  padding: 8px 0;
}

.btn--ghost:hover { color: var(--text-primary); }
.btn--ghost::after { content: '→'; margin-left: 4px; transition: transform var(--transition-base); }
.btn--ghost:hover::after { transform: translateX(4px); }

/* --- Navigation --- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 16px 0;
  transition: all var(--transition-base);
  background: transparent;
}

.nav.scrolled {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-subtle);
  padding: 12px 0;
  box-shadow: var(--shadow-sm);
}

.nav__inner {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav__logo img { height: 36px; width: auto; }

/* SVG text logo — swap fills on scroll */
.nav__logo svg text { transition: fill var(--transition-base); }
.nav.scrolled .nav__logo svg text[fill="#f1f5f9"] { fill: var(--text-primary); }
.nav.scrolled .nav__logo svg text[fill="#94a3b8"] { fill: var(--text-muted); }

.nav__links {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav__links a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color var(--transition-base);
  position: relative;
}

.nav__links a:hover,
.nav__links a.active { color: var(--text-primary); }

.nav__links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--brand-teal);
  transition: width var(--transition-base);
}

.nav__links a:hover::after,
.nav__links a.active::after { width: 100%; }

.nav__cta {
  padding: 10px 24px !important;
  font-size: 0.85rem !important;
}

/* Ensure CTA button link underline is hidden */
.nav__links a.nav__cta::after { display: none; }

.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav__toggle span {
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  transition: all var(--transition-base);
  border-radius: 2px;
}

/* --- Hero (DARK section for contrast) --- */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding-top: 80px;
  background: var(--bg-dark);
  color: var(--text-on-dark);
}

/* Override nav colors when over dark hero */
.nav:not(.scrolled) .nav__links a { color: rgba(241, 245, 249, 0.7); }
.nav:not(.scrolled) .nav__links a:hover,
.nav:not(.scrolled) .nav__links a.active { color: #fff; }
.nav:not(.scrolled) .nav__links a::after { background: var(--brand-orange); }
.nav:not(.scrolled) .nav__toggle span { background: #fff; }

.hero__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero__bg::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 30% 20%, rgba(6, 119, 136, 0.2), transparent 60%),
              radial-gradient(ellipse at 70% 80%, rgba(241, 100, 43, 0.1), transparent 50%);
}

.hero__grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(148, 163, 184, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(148, 163, 184, 0.04) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
  -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
}

.hero .container { position: relative; z-index: 1; }
.hero__content { max-width: 640px; }
.hero__title { margin-bottom: 24px; color: #fff; }
.hero h1 { color: #fff; }

.hero__subtitle {
  font-size: 1.15rem;
  line-height: 1.8;
  margin-bottom: 36px;
  color: rgba(241, 245, 249, 0.75);
}

.hero__actions { display: flex; gap: 16px; flex-wrap: wrap; }

/* Secondary btn on dark hero */
.hero .btn--secondary {
  color: #fff;
  border-color: rgba(255,255,255,0.25);
}
.hero .btn--secondary:hover {
  border-color: rgba(255,255,255,0.5);
  background: rgba(255,255,255,0.08);
  color: #fff;
}

.hero__stats {
  display: flex;
  gap: 48px;
  margin-top: 56px;
  padding-top: 32px;
  border-top: 1px solid rgba(255,255,255,0.1);
}

.hero__stat-value {
  font-size: 2rem;
  font-weight: 800;
  color: #fff;
  line-height: 1;
}

.hero__stat-label {
  font-size: 0.8rem;
  color: rgba(241,245,249,0.5);
  margin-top: 6px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

/* --- Cards (LIGHT) --- */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 36px;
  transition: all var(--transition-base);
  box-shadow: var(--shadow-sm);
}

.card:hover {
  border-color: var(--border-hover);
  transform: translateY(-4px);
  box-shadow: var(--shadow-card-hover);
}

.card__icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 20px;
  background: var(--brand-teal-bg);
  color: var(--brand-teal);
}

.card__title { font-size: 1.15rem; margin-bottom: 10px; }
.card__text { font-size: 0.9rem; color: var(--text-secondary); line-height: 1.7; }

/* --- Service Card --- */
.service-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 44px;
  position: relative;
  transition: all var(--transition-base);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--brand-teal), var(--brand-orange));
  opacity: 0;
  transition: opacity var(--transition-base);
}

.service-card:hover::before { opacity: 1; }
.service-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-card-hover); }

.service-card--featured {
  border-color: var(--brand-teal);
  background: linear-gradient(135deg, var(--brand-teal-bg), var(--bg-card));
}
.service-card--featured::before { opacity: 1; }

.service-card__badge {
  display: inline-block;
  background: var(--brand-teal);
  color: #fff;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  padding: 4px 12px;
  border-radius: 20px;
  margin-bottom: 20px;
}

.service-card__price { font-size: 2.2rem; font-weight: 800; color: var(--text-primary); margin-bottom: 8px; }
.service-card__price span { font-size: 0.9rem; font-weight: 400; color: var(--text-muted); }

/* --- Industry Grid --- */
.industry-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 32px 28px;
  text-align: center;
  transition: all var(--transition-base);
  cursor: pointer;
  box-shadow: var(--shadow-sm);
}

.industry-card:hover {
  border-color: var(--brand-teal);
  transform: translateY(-4px);
  box-shadow: var(--shadow-glow-teal);
}

.industry-card__icon { font-size: 2.2rem; margin-bottom: 16px; }
.industry-card__name { font-size: 0.95rem; font-weight: 600; color: var(--text-primary); }

/* --- Blog Card --- */
.blog-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: all var(--transition-base);
  box-shadow: var(--shadow-sm);
}

.blog-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-card-hover); }

.blog-card__image { width: 100%; height: 200px; object-fit: cover; }
.blog-card__body { padding: 28px; }

.blog-card__tag {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--brand-teal);
  margin-bottom: 12px;
}

.blog-card__title { font-size: 1.1rem; margin-bottom: 10px; line-height: 1.4; }
.blog-card__excerpt { font-size: 0.88rem; color: var(--text-muted); line-height: 1.6; margin-bottom: 16px; }

/* --- Section Headers --- */
.section-header { text-align: center; max-width: 640px; margin: 0 auto 56px; }
.section-header p { margin: 16px auto 0; text-align: center; }

/* --- CTA Banner (DARK for contrast) --- */
.cta-banner {
  background: var(--bg-dark);
  border-radius: var(--radius-xl);
  padding: 64px;
  text-align: center;
  position: relative;
  overflow: hidden;
  color: var(--text-on-dark);
}

.cta-banner::before {
  content: '';
  position: absolute;
  top: -50%; left: -50%;
  width: 200%; height: 200%;
  background: radial-gradient(circle at 30% 70%, rgba(241, 100, 43, 0.08), transparent 40%),
              radial-gradient(circle at 70% 30%, rgba(6, 119, 136, 0.1), transparent 40%);
  pointer-events: none;
}

.cta-banner > * { position: relative; z-index: 1; }
.cta-banner h2 { margin-bottom: 16px; color: #fff; }
.cta-banner p { margin: 0 auto 32px; text-align: center; color: rgba(241,245,249,0.7); }
.cta-banner .eyebrow { color: var(--brand-orange); }

/* --- Footer (DARK) --- */
.footer {
  background: var(--bg-dark);
  padding: 64px 0 32px;
  color: var(--text-on-dark);
}

.footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}

.footer__brand p { font-size: 0.88rem; margin-top: 16px; color: rgba(241,245,249,0.5); max-width: 300px; }

.footer__heading {
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: #fff;
  margin-bottom: 20px;
}

.footer__links a {
  display: block;
  font-size: 0.88rem;
  color: rgba(241,245,249,0.5);
  padding: 6px 0;
  transition: color var(--transition-base);
}

.footer__links a:hover { color: var(--brand-teal-light); }

.footer__bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer__copy { font-size: 0.8rem; color: rgba(241,245,249,0.4); }

/* --- Checklist Steps --- */
.step {
  display: grid;
  grid-template-columns: 60px 1fr;
  gap: 24px;
  padding: 32px 0;
  border-bottom: 1px solid var(--border-subtle);
}

.step:last-child { border-bottom: none; }

.step__number {
  width: 52px; height: 52px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.2rem; font-weight: 800;
  background: var(--brand-teal-bg);
  color: var(--brand-teal);
  border: 1.5px solid rgba(6, 119, 136, 0.2);
  flex-shrink: 0;
}

.step__title { font-size: 1.2rem; margin-bottom: 8px; }
.step__text { font-size: 0.92rem; color: var(--text-secondary); }

/* --- Article Page --- */
.article-hero {
  padding: 140px 0 60px;
  position: relative;
  background: var(--bg-dark);
  color: #fff;
}

.article-hero h1 { color: #fff; }

.article-hero__tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--brand-orange);
  margin-bottom: 16px;
}

.article-body {
  max-width: 720px;
  margin: 0 auto;
  padding: 48px 24px 80px;
}

.article-body h2 { margin: 48px 0 16px; font-size: 1.6rem; }
.article-body h3 { margin: 36px 0 12px; font-size: 1.2rem; }
.article-body p { margin-bottom: 20px; font-size: 1rem; line-height: 1.85; }

.article-body ul, .article-body ol { margin: 16px 0 24px 24px; list-style: disc; }
.article-body li { color: var(--text-secondary); margin-bottom: 8px; line-height: 1.7; }

.article-body a { color: var(--brand-teal); text-decoration: underline; text-underline-offset: 3px; }
.article-body a:hover { color: var(--text-primary); }

/* --- Contact Form --- */
.form-group { margin-bottom: 24px; }

.form-group label {
  display: block; font-size: 0.85rem; font-weight: 600;
  color: var(--text-primary); margin-bottom: 8px;
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%; padding: 14px 16px;
  background: var(--bg-secondary);
  border: 1.5px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-family: 'Inter', sans-serif;
  font-size: 0.92rem;
  transition: border-color var(--transition-base);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--brand-teal);
  box-shadow: 0 0 0 3px rgba(6, 119, 136, 0.1);
}

.form-group textarea { resize: vertical; min-height: 140px; }

/* --- Animations --- */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}

/* FIXED: Elements start visible, animation is enhancement only */
.fade-up {
  opacity: 1;
  transform: translateY(0);
  transition: opacity 0.6s var(--ease-out), transform 0.6s var(--ease-out);
}

/* Only hide when JS observer is active */
.js-loaded .fade-up:not(.visible) {
  opacity: 0;
  transform: translateY(24px);
}

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

/* --- Dark section overrides for inline bg-secondary usage --- */
/* When a section has bg-secondary on light theme, it's just a subtle gray */

/* --- Responsive --- */
@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .footer__grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .grid-2 { grid-template-columns: 1fr; }
  .grid-3 { grid-template-columns: 1fr; }
  .grid-4 { grid-template-columns: 1fr; }
  .footer__grid { grid-template-columns: 1fr; }

  .nav__links { display: none; }
  .nav__links.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 100%; left: 0; right: 0;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(20px);
    padding: 24px;
    gap: 16px;
    border-bottom: 1px solid var(--border-subtle);
    box-shadow: var(--shadow-card);
  }

  .nav__links.open a { color: var(--text-secondary) !important; }
  .nav__links.open a:hover { color: var(--text-primary) !important; }

  .nav__toggle { display: flex; }

  .hero__stats { gap: 24px; flex-wrap: wrap; }
  .hero__actions { flex-direction: column; }
  .hero__actions .btn { width: 100%; justify-content: center; }

  .cta-banner { padding: 40px 24px; }
  .service-card { padding: 32px; }

  .step { grid-template-columns: 1fr; gap: 12px; }
}