/* CBS V6 — Premium Polish. Apple-grade restraint. */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

:root {
  --bg: #ffffff;
  --bg-subtle: #fafafa;
  --bg-card: #ffffff;
  --border: #e5e5e5;
  --border-hover: #d0d0d0;
  --text: #1d1d1f;
  --text-secondary: #424245;
  --text-muted: #86868b;
  --accent: #0066cc;
  --accent-hover: #0055b3;
  --accent-bg: rgba(0, 102, 204, 0.06);
  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --max-w: 1120px;
  --gap: 2rem;
}

html { font-size: 16px; }
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

a { color: var(--accent); text-decoration: none; transition: color 0.2s; }
a:hover { color: var(--accent-hover); }
img { max-width: 100%; height: auto; display: block; }

/* ─── Layout ─── */
.container { max-width: var(--max-w); margin: 0 auto; padding: 0 2rem; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: var(--gap); }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--gap); }
@media (max-width: 768px) {
  .container { padding: 0 1.25rem; }
  .grid-2, .grid-3 { grid-template-columns: 1fr; }
}

/* ─── Nav ─── */
.site-nav {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid var(--border);
}
.site-nav .container {
  display: flex; align-items: center; justify-content: space-between;
  height: 52px;
}
.nav-brand {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text);
  letter-spacing: -0.01em;
}
.nav-brand span { color: var(--text-muted); font-weight: 400; }
.nav-links { display: flex; gap: 2rem; align-items: center; }
.nav-links a {
  font-size: 0.875rem;
  color: var(--text-secondary);
  font-weight: 400;
  transition: color 0.2s;
  position: relative;
}
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -2px; left: 0;
  width: 0; height: 1.5px;
  background: var(--accent);
  transition: width 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}
.nav-links a:hover::after,
.nav-links a.active::after {
  width: 100%;
}
.nav-links a:hover { color: var(--text); }
.nav-links a.active { color: var(--text); font-weight: 500; }
/* Exclude login button from underline */
.nav-links a.nav-login::after { display: none; }

.nav-toggle { display: none; background: none; border: none; color: var(--text); font-size: 1.5rem; cursor: pointer; padding: 8px; min-width: 44px; min-height: 44px; }
@media (max-width: 768px) {
  .nav-toggle { display: flex; align-items: center; justify-content: center; }
  .nav-links {
    flex-direction: column; position: absolute;
    top: 100%; left: 0; right: 0; background: var(--bg);
    border-bottom: 1px solid var(--border); padding: 1.25rem 2rem; gap: 1rem;
    transform: translateY(-10px);
    opacity: 0;
    pointer-events: none;
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.3s ease;
  }
  .nav-links.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }
  .nav-links a::after { display: none; }
}

/* ─── Typography ─── */
h1, h2, h3 { font-family: var(--font); font-weight: 600; letter-spacing: -0.025em; line-height: 1.15; color: var(--text); }
h1 { font-size: clamp(2rem, 5vw, 3.25rem); }
h2 { font-size: clamp(1.5rem, 3.5vw, 2rem); }
h3 { font-size: 1.15rem; }

.section-label {
  font-size: 0.8rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--accent);
  margin-bottom: 0.5rem;
}

/* ─── Cards ─── */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  transition: box-shadow 0.35s cubic-bezier(0.4, 0, 0.2, 1),
              border-color 0.35s ease,
              transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}
.card:hover {
  border-color: var(--border-hover);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
  transform: translateY(-4px);
}

/* ─── Article cards ─── */
.article-card { display: flex; flex-direction: column; }
.article-card .card-image {
  width: 100%;
  height: 200px;
  object-fit: cover;
}
.article-card .card-body { padding: 1.25rem; flex: 1; display: flex; flex-direction: column; }
.article-card .card-meta {
  display: flex; align-items: center; gap: 0.75rem;
  font-size: 0.8rem;
  color: var(--text-muted); margin-bottom: 0.75rem;
}
.article-card .card-category {
  color: var(--accent);
  font-size: 0.75rem;
  font-weight: 500;
}
.article-card h3 { margin-bottom: 0.5rem; font-size: 1.1rem; }
.article-card h3 a { color: var(--text); transition: color 0.2s; }
.article-card h3 a:hover { color: var(--accent); }
.article-card .card-summary {
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.55;
  flex: 1;
}
.article-card .card-footer {
  margin-top: 1rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.article-card .card-read {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--accent);
}
.article-card .card-readtime {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* ─── Hero ─── */
.hero {
  padding: 6rem 0 5rem;
  text-align: center;
}
.hero h1 {
  max-width: 720px;
  margin: 0 auto 1.25rem;
  font-weight: 700;
  letter-spacing: -0.03em;
}
.hero .hero-sub {
  font-size: 1.2rem;
  color: var(--text-secondary);
  line-height: 1.65;
  max-width: 560px;
  margin: 0 auto;
  font-weight: 300;
}
.hero-actions {
  margin-top: 2rem;
  display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap;
}
@media (max-width: 768px) {
  .hero { padding: 3.5rem 0 3rem; }
}

/* ─── Hero text reveal ─── */
.hero-line {
  display: block;
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.5s ease, transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}
.hero-line.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ─── Hero image band ─── */
.hero-image-band {
  padding: 0 0 4rem;
}
.hero-image-band img {
  width: 100%;
  max-height: 480px;
  object-fit: cover;
  border-radius: 16px;
}
@media (max-width: 768px) {
  .hero-image-band img { border-radius: 8px; max-height: 280px; }
}

/* ─── Buttons ─── */
.btn {
  display: inline-block;
  font-family: var(--font);
  font-size: 0.9rem;
  font-weight: 500;
  padding: 0.75rem 1.75rem;
  border-radius: 980px;
  border: none;
  color: #fff;
  background: var(--accent);
  cursor: pointer;
  transition: background 0.2s, transform 0.2s cubic-bezier(0.4, 0, 0.2, 1), box-shadow 0.2s;
}
.btn:hover {
  background: var(--accent-hover);
  color: #fff;
  transform: scale(1.02);
  box-shadow: 0 4px 12px rgba(0, 102, 204, 0.25);
}
.btn:active { transform: scale(0.98); }
.btn-outline {
  background: transparent;
  color: var(--accent);
  border: 1px solid var(--accent);
}
.btn-outline:hover {
  background: var(--accent);
  color: #fff;
  transform: scale(1.02);
}
.btn-outline:active { transform: scale(0.98); }

/* ─── Sections ─── */
.section { padding: 5rem 0; }
.section + .section { border-top: 1px solid var(--border); }
.section-header {
  display: flex; justify-content: space-between; align-items: baseline;
  margin-bottom: 2rem;
}
.section-header h2 { margin: 0; }
.section-header a {
  font-size: 0.875rem;
  font-weight: 500;
}

/* ─── Services ─── */
.service-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 2rem;
  transition: box-shadow 0.35s cubic-bezier(0.4, 0, 0.2, 1),
              transform 0.35s cubic-bezier(0.4, 0, 0.2, 1),
              border-color 0.35s ease;
}
.service-card:hover {
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.06);
  transform: translateY(-4px);
  border-color: var(--border-hover);
}
.service-card h3 { margin-bottom: 0.75rem; font-size: 1.2rem; }
.service-card p { color: var(--text-secondary); font-size: 0.95rem; line-height: 1.6; }

/* ─── Process steps ─── */
.process-steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2rem; }
.process-step { text-align: center; padding: 2rem 1rem; }
.process-step .step-number {
  display: inline-flex; align-items: center; justify-content: center;
  width: 48px; height: 48px; border-radius: 50%;
  background: var(--accent); color: #fff; font-weight: 600;
  font-size: 1.1rem; margin-bottom: 1.25rem;
}
.process-step h3 { margin-bottom: 0.5rem; }
.process-step p { color: var(--text-secondary); font-size: 0.95rem; line-height: 1.55; }
@media (max-width: 768px) {
  .process-steps { grid-template-columns: 1fr; gap: 1rem; }
}

/* ─── Pricing hint ─── */
.pricing-hint {
  text-align: center;
  padding: 2rem;
  background: var(--bg-subtle);
  border-radius: 12px;
  margin-top: 2rem;
}
.pricing-hint p { color: var(--text-secondary); font-size: 1rem; }
.pricing-hint .price { font-size: 1.5rem; font-weight: 600; color: var(--text); margin-bottom: 0.25rem; }

/* ─── Pricing cards — interactive ─── */
.pricing-card-featured {
  border-color: var(--accent) !important;
  box-shadow: 0 0 0 1px var(--accent), 0 8px 30px rgba(0, 102, 204, 0.1);
  transform: scale(1.02);
}
.pricing-card-featured:hover {
  transform: scale(1.04) translateY(-4px);
  box-shadow: 0 0 0 1px var(--accent), 0 12px 40px rgba(0, 102, 204, 0.15);
}

/* ─── Article page ─── */
.article-full { max-width: 720px; margin: 0 auto; padding: 3rem 1.5rem; }
.article-full .article-hero {
  width: calc(100% + 3rem); margin-left: -1.5rem; margin-bottom: 2rem;
  border-radius: 12px; overflow: hidden;
}
.article-full .article-hero img {
  width: 100%; height: 400px; object-fit: cover;
}
.article-full header { margin-bottom: 2rem; padding-bottom: 1.5rem; border-bottom: 1px solid var(--border); }
.article-full h1 { margin-bottom: 0.75rem; }
.article-full .article-meta {
  display: flex; gap: 1rem;
  font-size: 0.875rem; color: var(--text-muted);
}
.article-full .article-body { font-size: 1.05rem; line-height: 1.8; color: var(--text-secondary); }
.article-full .article-body h2 {
  margin-top: 2.5rem; margin-bottom: 1rem;
  color: var(--text); font-size: 1.5rem;
}
.article-full .article-body p { margin-bottom: 1.25rem; }
.article-full .article-body strong { color: var(--text); }
.article-full .article-body ul, .article-full .article-body ol {
  margin: 1rem 0; padding-left: 1.5rem;
}
.article-full .article-body li { margin-bottom: 0.5rem; }

/* ─── Article back link ─── */
.article-back {
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
}
.article-back a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--accent);
  transition: color 0.2s;
}
.article-back a:hover { color: var(--accent-hover); }

/* ─── Article share row ─── */
.article-share {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-top: 2.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
}
.article-share span {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-muted);
}
.article-share a {
  font-size: 0.85rem;
  font-weight: 500;
  padding: 0.4rem 0.9rem;
  border: 1px solid var(--border);
  border-radius: 980px;
  color: var(--text-secondary);
  transition: border-color 0.2s, color 0.2s;
}
.article-share a:hover {
  border-color: var(--accent);
  color: var(--accent);
}

/* ─── Form ─── */
.form-group { margin-bottom: 1.25rem; }
.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text);
  margin-bottom: 0.4rem;
}
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 0.7rem 0.9rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-family: var(--font);
  font-size: 0.9rem;
  color: var(--text);
  background: var(--bg);
  transition: border-color 0.2s, box-shadow 0.2s;
  min-height: 44px;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(0, 102, 204, 0.12);
}
.form-group textarea { min-height: 100px; resize: vertical; }

/* ─── Newsletter ─── */
.newsletter-inline {
  display: flex; gap: 0.75rem;
}
.newsletter-inline input {
  flex: 1; padding: 0.75rem 1rem;
  background: var(--bg); border: 1px solid var(--border);
  border-radius: 980px; color: var(--text);
  font-family: var(--font); font-size: 0.95rem;
  min-height: 44px;
}
.newsletter-inline input:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px rgba(0, 102, 204, 0.12); }
@media (max-width: 500px) {
  .newsletter-inline { flex-direction: column; }
}

/* ─── Footer ─── */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 2.5rem 0;
  margin-top: 2rem;
}
.footer-inner {
  display: flex; justify-content: space-between; align-items: center;
  font-size: 0.875rem; color: var(--text-muted);
}
.footer-inner a { color: var(--text-muted); }
.footer-inner a:hover { color: var(--text); }
.footer-links { display: flex; gap: 2rem; }
@media (max-width: 600px) {
  .footer-inner { flex-direction: column; gap: 1rem; text-align: center; }
}

/* ─── Filter bar ─── */
.filter-bar {
  display: flex; gap: 0.5rem; margin-bottom: 2rem; flex-wrap: wrap;
}
.filter-btn {
  font-family: var(--font);
  font-size: 0.85rem;
  font-weight: 500;
  padding: 0.5rem 1rem;
  border: 1px solid var(--border);
  border-radius: 980px;
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  transition: all 0.2s;
  min-height: 44px;
}
.filter-btn:hover { border-color: var(--accent); color: var(--accent); }
.filter-btn.active {
  border-color: var(--accent);
  color: #fff;
  background: var(--accent);
}

/* ─── Page header ─── */
.page-header {
  padding: 4rem 0 2rem;
}
.page-header h1 { margin-bottom: 0.75rem; }
.page-header p { color: var(--text-secondary); font-size: 1.1rem; max-width: 560px; font-weight: 300; }

/* ─── About ─── */
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 4rem; }
@media (max-width: 768px) { .about-grid { grid-template-columns: 1fr; gap: 2rem; } }
.value-item { margin-bottom: 1.75rem; }
.value-item h3 { color: var(--text); margin-bottom: 0.35rem; }
.value-item p { color: var(--text-secondary); font-size: 0.95rem; line-height: 1.6; }

/* ─── Scroll reveal ─── */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s cubic-bezier(0.4, 0, 0.2, 1), transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}
/* Legacy support */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Stagger children in grids */
.stagger-grid > * {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.5s cubic-bezier(0.4, 0, 0.2, 1), transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}
.stagger-grid.visible > *:nth-child(1) { transition-delay: 0ms; }
.stagger-grid.visible > *:nth-child(2) { transition-delay: 80ms; }
.stagger-grid.visible > *:nth-child(3) { transition-delay: 160ms; }
.stagger-grid.visible > *:nth-child(4) { transition-delay: 240ms; }
.stagger-grid.visible > *:nth-child(5) { transition-delay: 320ms; }
.stagger-grid.visible > *:nth-child(6) { transition-delay: 400ms; }
.stagger-grid.visible > * {
  opacity: 1;
  transform: translateY(0);
}

/* ─── CTA section ─── */
.cta-section {
  background: var(--bg-subtle);
  border-radius: 16px;
  padding: 4rem 2rem;
  text-align: center;
}

/* ─── Nav login ─── */
.nav-login {
  background: var(--accent);
  color: #fff !important;
  padding: 0.4rem 1rem;
  border-radius: 6px;
  font-size: 0.85rem;
  font-weight: 500;
  transition: background 0.2s, transform 0.2s;
}
.nav-login:hover { background: var(--accent-hover); color: #fff !important; transform: scale(1.02); }

/* ─── Pricing section enhanced ─── */
.pricing-section .card { transition: border-color 0.3s, box-shadow 0.3s, transform 0.3s cubic-bezier(0.4, 0, 0.2, 1); }
.pricing-section .card:hover { box-shadow: 0 8px 30px rgba(0,0,0,0.08); transform: translateY(-4px); }

/* ─── Touch targets (mobile) ─── */
@media (max-width: 768px) {
  .btn { min-height: 44px; display: inline-flex; align-items: center; justify-content: center; }
  .nav-links a { min-height: 44px; display: flex; align-items: center; }
}

/* ─── Dashboard briefing news-feed feel ─── */
.briefing-item {
  background: #fff;
  border: 1px solid #e5e5e5;
  border-radius: 12px;
  padding: 1.75rem;
  margin-bottom: 1rem;
  transition: box-shadow 0.3s cubic-bezier(0.4, 0, 0.2, 1), transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
}
.briefing-item::before {
  content: '';
  position: absolute;
  left: 0; top: 1.5rem; bottom: 1.5rem;
  width: 3px;
  background: var(--accent);
  border-radius: 0 2px 2px 0;
  opacity: 0;
  transition: opacity 0.3s ease;
}
.briefing-item:hover {
  box-shadow: 0 6px 24px rgba(0,0,0,0.06);
  transform: translateY(-2px);
}
.briefing-item:hover::before {
  opacity: 1;
}

/* ─── Dark Mode ─── */
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0a0a0a;
    --bg-subtle: #141414;
    --bg-card: #1a1a1a;
    --border: #2a2a2a;
    --border-hover: #3a3a3a;
    --text: #f5f5f7;
    --text-secondary: #a1a1a6;
    --text-muted: #6e6e73;
    --accent: #4d9fff;
    --accent-hover: #6db3ff;
    --accent-bg: rgba(77, 159, 255, 0.08);
  }

  body { background: var(--bg); }

  .site-nav {
    background: rgba(10, 10, 10, 0.88);
    border-bottom-color: var(--border);
  }

  .card, .service-card {
    background: var(--bg-card);
    border-color: var(--border);
  }
  .card:hover, .service-card:hover {
    border-color: var(--border-hover);
    box-shadow: 0 6px 24px rgba(0,0,0,0.3);
  }

  .btn {
    background: var(--accent);
    color: #fff;
  }
  .btn:hover { background: var(--accent-hover); }
  .btn-outline {
    background: transparent;
    border-color: var(--border);
    color: var(--text);
  }
  .btn-outline:hover {
    border-color: var(--text-muted);
    background: var(--bg-subtle);
  }

  .site-footer { border-top-color: var(--border); }

  .hero-image-band img { opacity: 0.85; }

  .filter-btn { background: var(--bg-subtle); border-color: var(--border); color: var(--text-muted); }
  .filter-btn.active, .filter-btn:hover { background: var(--accent); border-color: var(--accent); color: #fff; }

  .page-header { border-bottom-color: var(--border); }

  img { opacity: 0.92; }

  input, textarea, select {
    background: var(--bg-subtle);
    border-color: var(--border);
    color: var(--text);
  }
  input:focus, textarea:focus, select:focus {
    border-color: var(--accent);
  }

  .briefing-item {
    background: var(--bg-card);
    border-color: var(--border);
  }
  .briefing-item:hover {
    box-shadow: 0 6px 24px rgba(0,0,0,0.4);
  }
}