/* ═══════════════════════════════════════════════════════════
   TDO — The Digital Opportunity  |  styles.css  v2
   Clean & professional — brand colours as precise accents
   Green #44B649 · Charcoal #1E1E1E · Red #E04444
   ═══════════════════════════════════════════════════════════ */

/* ── Reset ───────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
img { max-width: 100%; display: block; }
a   { color: inherit; text-decoration: none; }
ul  { list-style: none; }

/* ── Design tokens ───────────────────────────────────────── */
:root {
  /* Brand */
  --green:       #44B649;
  --green-dim:   rgba(68, 182, 73, 0.12);
  --red:         #E04444;
  --red-dim:     rgba(224, 68, 68, 0.10);
  --charcoal:    #1E1E1E;

  /* Neutrals */
  --white:       #FFFFFF;
  --surface:     #F7F8F8;
  --border:      #E4E4E7;
  --border-dark: rgba(255,255,255,0.10);

  /* Text */
  --text:        #1A1A1A;
  --text-2:      #52525B;
  --text-3:      #A1A1AA;

  /* Radius */
  --r-sm: 8px;
  --r-md: 14px;
  --r-lg: 20px;
  --r-pill: 999px;

  /* Shadow */
  --shadow-sm: 0 1px 4px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 24px rgba(0,0,0,0.08);
  --shadow-lg: 0 12px 48px rgba(0,0,0,0.10);

  /* Layout */
  --max-w: 1120px;
  --gutter: max(1.5rem, 5vw);

  /* Motion */
  --ease: 0.18s ease;
}

/* ── Body ────────────────────────────────────────────────── */
body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  color: var(--text);
  background: var(--white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* ── Layout ─────────────────────────────────────────────── */
.container {
  width: min(var(--max-w), 100% - var(--gutter) * 2);
  margin-inline: auto;
}
.section     { padding: 6rem 0; }
.section--sm { padding: 4rem 0; }
.section--surface { background: var(--surface); }
.section--dark    { background: var(--charcoal); color: var(--white); }
.section--green   { background: var(--green);    color: var(--white); }

/* ── Typography ─────────────────────────────────────────── */
h1 { font-size: clamp(2.4rem, 5vw, 3.75rem); font-weight: 800; line-height: 1.1; letter-spacing: -0.03em; color: var(--text); }
h2 { font-size: clamp(1.8rem, 3.5vw, 2.75rem); font-weight: 800; line-height: 1.15; letter-spacing: -0.025em; color: var(--text); }
h3 { font-size: 1.2rem; font-weight: 700; letter-spacing: -0.01em; color: var(--text); }
h4 { font-size: 0.95rem; font-weight: 700; color: var(--text); }

.section--dark h1, .section--dark h2, .section--dark h3 { color: var(--white); }
.section--green h1, .section--green h2                   { color: var(--white); }

.lead {
  font-size: 1.15rem;
  color: var(--text-2);
  line-height: 1.75;
  max-width: 54ch;
}

.label {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-3);
  display: block;
  margin-bottom: 0.875rem;
}
.label--green { color: var(--green); }
.label--red   { color: var(--red); }

.accent--green { color: var(--green); }
.accent--red   { color: var(--red); }

/* ── Divider ─────────────────────────────────────────────── */
.divider {
  height: 1px;
  background: var(--border);
  border: none;
  margin: 0;
}
.divider--dark { background: var(--border-dark); }

/* ── Buttons ─────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.8rem 1.6rem;
  border-radius: var(--r-pill);
  font-size: 0.9rem;
  font-weight: 700;
  border: 1.5px solid transparent;
  cursor: pointer;
  transition: all var(--ease);
  white-space: nowrap;
  font-family: inherit;
  text-decoration: none;
}
.btn--lg { padding: 1rem 2rem; font-size: 0.95rem; }

.btn-primary { background: var(--green); color: var(--white); border-color: var(--green); }
.btn-primary:hover { background: #389B3C; border-color: #389B3C; transform: translateY(-1px); box-shadow: 0 4px 16px rgba(68,182,73,0.3); }

.btn-danger { background: var(--red); color: var(--white); border-color: var(--red); }
.btn-danger:hover { background: #C93A3A; border-color: #C93A3A; transform: translateY(-1px); box-shadow: 0 4px 16px rgba(224,68,68,0.3); }

.btn-outline { background: transparent; color: var(--text); border-color: var(--border); }
.btn-outline:hover { border-color: var(--text); transform: translateY(-1px); }

.btn-ghost { background: transparent; color: var(--text-2); border-color: transparent; padding-inline: 0.5rem; }
.btn-ghost:hover { color: var(--text); }

.btn-outline-white { background: transparent; color: var(--white); border-color: rgba(255,255,255,0.35); }
.btn-outline-white:hover { border-color: var(--white); transform: translateY(-1px); }

.actions { display: flex; align-items: center; gap: 0.875rem; flex-wrap: wrap; }

/* ── Navigation ─────────────────────────────────────────── */
nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  height: 64px;
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  font-weight: 800;
  font-size: 0.95rem;
  color: var(--text);
  flex-shrink: 0;
  margin-right: auto;
}
.tdo-mark { font-size: 1.4rem; font-weight: 900; line-height: 1; letter-spacing: -0.02em; }
.tdo-mark .t { color: var(--green); }
.tdo-mark .d { color: var(--charcoal); }
.tdo-mark .o { color: var(--red); }
.nav-wordmark { color: var(--text-2); font-weight: 600; font-size: 0.88rem; }
.nav-logo-img { height: 38px; width: auto; display: block; }

.nav-links { display: flex; gap: 0.125rem; }
.nav-links a {
  padding: 0.45rem 0.75rem;
  border-radius: var(--r-sm);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-2);
  transition: all var(--ease);
}
.nav-links a:hover, .nav-links a.active { color: var(--text); background: var(--surface); }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
}
.nav-toggle span { display: block; width: 22px; height: 2px; background: var(--text); border-radius: 2px; }

/* ── Stats row ───────────────────────────────────────────── */
.stats-row {
  display: flex;
  gap: 2.5rem;
  padding-top: 2.5rem;
  margin-top: 2.5rem;
  border-top: 1px solid var(--border);
  flex-wrap: wrap;
}
.stat .num {
  font-size: 1.75rem;
  font-weight: 900;
  color: var(--text);
  letter-spacing: -0.03em;
  line-height: 1;
}
.stat .caption {
  font-size: 0.8rem;
  color: var(--text-3);
  margin-top: 0.25rem;
}
.stat .num--green { color: var(--green); }
.stat .num--red   { color: var(--red); }

/* ── Problem / Comparison strip ──────────────────────────── */
.comparison {
  display: grid;
  grid-template-columns: 1fr 1fr;
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  overflow: hidden;
  margin-top: 3rem;
}
.cmp-col { padding: 2rem 2.25rem; }
.cmp-col--bad  { background: var(--red-dim);   border-right: 1px solid var(--border); }
.cmp-col--good { background: var(--green-dim); }
.cmp-col-label {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 1.25rem;
  display: block;
}
.cmp-col--bad  .cmp-col-label { color: var(--red); }
.cmp-col--good .cmp-col-label { color: var(--green); }
.cmp-list { display: flex; flex-direction: column; gap: 0.625rem; }
.cmp-list li {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text);
  display: flex;
  align-items: flex-start;
  gap: 0.625rem;
  line-height: 1.4;
}
.cmp-list li .icon { font-size: 0.8rem; margin-top: 0.1rem; flex-shrink: 0; }
.cmp-col--bad  .icon { color: var(--red); }
.cmp-col--good .icon { color: var(--green); }

/* ── Feature list (inline) ───────────────────────────────── */
.feature-list { display: flex; flex-direction: column; gap: 1.5rem; }
.feature-item { display: flex; gap: 1.25rem; align-items: flex-start; }
.feature-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--green);
  flex-shrink: 0;
  margin-top: 0.5rem;
}
.feature-item h4 { margin-bottom: 0.25rem; font-size: 1rem; }
.feature-item p  { font-size: 0.9rem; color: var(--text-2); }
.feature-icon { width: 36px; height: 36px; flex-shrink: 0; }

/* ── Steps ───────────────────────────────────────────────── */
.steps { display: flex; flex-direction: column; }
.step-item {
  display: grid;
  grid-template-columns: 48px 1fr;
  gap: 1.25rem;
  padding: 1.75rem 0;
  border-bottom: 1px solid var(--border);
}
.step-item:last-child { border-bottom: none; }
.step-num {
  width: 44px; height: 44px;
  border-radius: 50%;
  font-size: 0.9rem;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: var(--white);
  background: var(--charcoal);
}
.step-num--green { background: var(--green); }
.step-body h4 { margin-bottom: 0.3rem; font-size: 1rem; }
.step-body p  { font-size: 0.9rem; color: var(--text-2); }

/* ── Illustrations ───────────────────────────────────────── */
.hero-illus { width: 100%; max-width: 400px; display: block; margin: 0 auto 1.75rem; filter: drop-shadow(0 4px 16px rgba(0,0,0,0.07)); }
.steps-flow { width: 100%; max-width: 300px; display: block; margin-top: 2rem; }
@media (max-width: 960px) { .hero-illus { max-width: 320px; } }
@media (max-width: 640px) { .hero-illus { display: none; } .steps-flow { display: none; } }

/* ── Pricing ─────────────────────────────────────────────── */
.pricing-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 1px; background: var(--border); border: 1px solid var(--border); border-radius: var(--r-lg); overflow: hidden; }
.price-col { background: var(--white); padding: 2.25rem 2rem; display: flex; flex-direction: column; }
.price-col--featured { background: var(--charcoal); }

.price-tier { font-size: 0.72rem; font-weight: 700; letter-spacing: 0.12em; text-transform: uppercase; color: var(--text-3); margin-bottom: 0.5rem; }
.price-col--featured .price-tier { color: rgba(255,255,255,0.4); }

.price-amount { font-size: 2.75rem; font-weight: 900; letter-spacing: -0.03em; color: var(--text); line-height: 1; }
.price-col--featured .price-amount { color: var(--white); }

.price-sub { font-size: 0.82rem; color: var(--text-3); margin-top: 0.25rem; margin-bottom: 1.5rem; }
.price-col--featured .price-sub { color: rgba(255,255,255,0.35); }

.price-desc { font-size: 0.88rem; color: var(--text-2); margin-bottom: 1.5rem; line-height: 1.5; }
.price-col--featured .price-desc { color: rgba(255,255,255,0.5); }

.price-rule { height: 1px; background: var(--border); margin-bottom: 1.5rem; }
.price-col--featured .price-rule { background: rgba(255,255,255,0.1); }

.price-features { flex: 1; display: flex; flex-direction: column; gap: 0.625rem; margin-bottom: 1.75rem; }
.price-features li {
  font-size: 0.875rem;
  color: var(--text-2);
  display: flex;
  gap: 0.625rem;
  align-items: flex-start;
  line-height: 1.4;
}
.price-col--featured .price-features li { color: rgba(255,255,255,0.65); }
.price-features li::before { content: "✓"; color: var(--green); font-weight: 700; flex-shrink: 0; font-size: 0.8rem; margin-top: 0.1rem; }

.price-badge {
  display: inline-block;
  background: var(--green);
  color: var(--white);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.2rem 0.75rem;
  border-radius: var(--r-pill);
  margin-bottom: 0.625rem;
}

/* ── Checklist table ─────────────────────────────────────── */
.check-table { width: 100%; border-collapse: collapse; }
.check-table th {
  text-align: left;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-3);
  padding: 0 1rem 0.875rem;
  border-bottom: 1px solid var(--border);
}
.check-table td {
  padding: 0.875rem 1rem;
  font-size: 0.9rem;
  color: var(--text-2);
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}
.check-table tr:last-child td { border-bottom: none; }
.check-table td:first-child { color: var(--text); font-weight: 500; }
.badge-critical { display: inline-block; background: #FEE2E2; color: #B91C1C; font-size: 0.7rem; font-weight: 700; padding: 0.15rem 0.5rem; border-radius: var(--r-pill); }
.badge-high     { display: inline-block; background: #FEF9C3; color: #854D0E; font-size: 0.7rem; font-weight: 700; padding: 0.15rem 0.5rem; border-radius: var(--r-pill); }
.badge-medium   { display: inline-block; background: #F0FDF4; color: #166534; font-size: 0.7rem; font-weight: 700; padding: 0.15rem 0.5rem; border-radius: var(--r-pill); }

/* ── Work / case study ───────────────────────────────────── */
.case-study {
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  overflow: hidden;
  margin-bottom: 1.5rem;
}
.case-study:last-child { margin-bottom: 0; }
.case-header {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  padding: 1.75rem 2rem;
  border-bottom: 1px solid var(--border);
  flex-wrap: wrap;
}
.case-logo {
  width: 52px; height: 52px;
  border-radius: var(--r-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 900;
  font-size: 1.1rem;
  flex-shrink: 0;
}
.case-title { flex: 1; min-width: 200px; }
.case-title h3 { font-size: 1.1rem; margin-bottom: 0.2rem; }
.case-title p  { font-size: 0.85rem; color: var(--text-2); }
.case-tags { display: flex; gap: 0.5rem; flex-wrap: wrap; margin-left: auto; }
.tag {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  padding: 0.2rem 0.625rem;
  border-radius: var(--r-pill);
  letter-spacing: 0.04em;
}
.tag--live  { background: var(--green-dim); color: #1D6B22; }
.tag--wip   { background: var(--surface);   color: var(--text-3); }
.tag--tier  { background: var(--surface);   color: var(--text-2); border: 1px solid var(--border); }

.case-body { padding: 2rem; }
.case-cols { display: grid; grid-template-columns: 1fr 1fr; gap: 3rem; align-items: start; }
.case-body h4 { font-size: 0.8rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.08em; color: var(--text-3); margin-bottom: 0.75rem; }
.case-body p  { font-size: 0.92rem; color: var(--text-2); margin-bottom: 1.25rem; }
.case-facts   { display: flex; flex-direction: column; gap: 0.5rem; }
.case-facts li {
  font-size: 0.9rem;
  color: var(--text-2);
  display: flex;
  gap: 0.625rem;
  align-items: flex-start;
  line-height: 1.4;
}
.case-facts li::before { content: "✓"; color: var(--green); font-weight: 700; font-size: 0.85rem; flex-shrink: 0; margin-top: 0.1rem; }
.case-metrics {
  display: flex;
  gap: 2rem;
  padding-top: 1.5rem;
  margin-top: 1.5rem;
  border-top: 1px solid var(--border);
}
.metric .n { font-size: 1.75rem; font-weight: 900; color: var(--green); letter-spacing: -0.03em; line-height: 1; }
.metric .l { font-size: 0.78rem; color: var(--text-3); margin-top: 0.2rem; }
.case-link { margin-top: 1.5rem; }

/* ── Audit offer block ───────────────────────────────────── */
.audit-offer {
  background: var(--charcoal);
  border-radius: var(--r-lg);
  padding: 3rem;
  color: var(--white);
}
.audit-offer h2 { color: var(--white); margin-bottom: 0.75rem; }
.audit-offer p  { color: rgba(255,255,255,0.6); margin-bottom: 1.75rem; max-width: 48ch; }
.audit-checklist { display: grid; grid-template-columns: 1fr 1fr; gap: 0.625rem 2rem; margin-bottom: 2rem; }
.audit-offer-grid { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 4rem; align-items: start; }
.audit-checklist li {
  font-size: 0.875rem;
  color: rgba(255,255,255,0.65);
  display: flex;
  gap: 0.5rem;
  align-items: center;
}
.audit-checklist li::before { content: "✓"; color: var(--green); font-weight: 700; font-size: 0.8rem; flex-shrink: 0; }

/* ── Contact form ─────────────────────────────────────────── */
.form { display: flex; flex-direction: column; gap: 1.125rem; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1.125rem; }
.form-group { display: flex; flex-direction: column; gap: 0.4rem; }
.form-group label { font-size: 0.82rem; font-weight: 600; color: var(--text); }
.form-group input,
.form-group select,
.form-group textarea {
  padding: 0.8rem 1rem;
  border: 1.5px solid var(--border);
  border-radius: var(--r-md);
  font-size: 0.9rem;
  font-family: inherit;
  color: var(--text);
  background: var(--white);
  transition: border-color var(--ease);
  width: 100%;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus { outline: none; border-color: var(--green); box-shadow: 0 0 0 3px rgba(68,182,73,0.12); }
.form-group textarea { resize: vertical; min-height: 110px; }

/* ── FAQ ─────────────────────────────────────────────────── */
.faq-list { display: flex; flex-direction: column; }
.faq-item { padding: 1.5rem 0; border-bottom: 1px solid var(--border); }
.faq-item:last-child { border-bottom: none; }
.faq-item h3 { font-size: 1rem; margin-bottom: 0.5rem; }
.faq-item p  { font-size: 0.9rem; color: var(--text-2); }

/* ── Two-column layout helpers ───────────────────────────── */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr;          gap: 3rem; }
.grid-3 { display: grid; grid-template-columns: repeat(3,1fr);    gap: 2rem; }
.grid-4 { display: grid; grid-template-columns: repeat(4,1fr);    gap: 1.5rem; }
.grid-2--wide { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 4rem; }
.align-center { align-items: center; }

/* ── CTA band ────────────────────────────────────────────── */
.cta-band { background: var(--green); padding: 4.5rem 0; text-align: center; }
.cta-band h2 { color: var(--white); margin-bottom: 0.75rem; }
.cta-band p  { color: rgba(255,255,255,0.8); max-width: 50ch; margin: 0 auto 2rem; }

/* ── Page hero (inner) ───────────────────────────────────── */
.page-hero { padding: 4.5rem 0 3.5rem; border-bottom: 1px solid var(--border); }
.page-hero .label { margin-bottom: 0.5rem; }
.page-hero h1 { margin-bottom: 1rem; }
.page-hero .lead { max-width: 60ch; }

/* ── Footer ───────────────────────────────────────────────── */
footer {
  background: var(--charcoal);
  color: rgba(255,255,255,0.45);
}
.footer-top {
  display: grid;
  grid-template-columns: 1.75fr 1fr 1fr;
  gap: 3rem;
  padding: 4rem 0 3rem;
  border-bottom: 1px solid var(--border-dark);
}
.footer-brand .tdo-mark .d { color: rgba(255,255,255,0.85); }
.footer-brand .nav-wordmark { color: rgba(255,255,255,0.55); }
.footer-brand p { margin-top: 1rem; font-size: 0.875rem; line-height: 1.7; }
.footer-brand a { color: rgba(255,255,255,0.45); }
.footer-brand a:hover { color: rgba(255,255,255,0.8); }

.footer-col h4 {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.7);
  margin-bottom: 1rem;
}
.footer-col a {
  display: block;
  font-size: 0.875rem;
  color: rgba(255,255,255,0.4);
  margin-bottom: 0.5rem;
  transition: color var(--ease);
}
.footer-col a:hover { color: var(--white); }

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.5rem 0;
  font-size: 0.82rem;
}
.footer-bottom a { color: var(--green); }

/* ── Responsive ───────────────────────────────────────────── */
@media (max-width: 960px) {
  .grid-2, .grid-2--wide, .grid-3, .grid-4, .pricing-grid, .audit-offer-grid { grid-template-columns: 1fr; }
  .retainer-grid { grid-template-columns: 1fr !important; }
  .comparison { grid-template-columns: 1fr; }
  .cmp-col--bad { border-right: none; border-bottom: 1px solid var(--border); }
  .footer-top { grid-template-columns: 1fr 1fr; }
  .case-cols  { grid-template-columns: 1fr; gap: 2rem; }
  .audit-checklist { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
  h1 { font-size: 2.2rem; }
  h2 { font-size: 1.75rem; }
  .nav-links, .nav-links + .btn { display: none; }
  .nav-toggle { display: flex; margin-left: auto; }
  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: fixed;
    inset: 64px 0 auto;
    background: var(--white);
    border-bottom: 1px solid var(--border);
    padding: 1rem 1.5rem;
    box-shadow: var(--shadow-lg);
    z-index: 99;
  }
  .nav-links.open a { padding: 0.75rem 0; border-radius: 0; border-bottom: 1px solid var(--border); font-size: 1rem; }
  .section { padding: 4rem 0; }
  .footer-top { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; gap: 0.5rem; text-align: center; }
  .form-row { grid-template-columns: 1fr; }
  .stats-row { gap: 1.75rem; }
  .case-metrics { flex-wrap: wrap; gap: 1.25rem; }
  .audit-offer { padding: 2rem 1.5rem; }
  .price-amount { font-size: 2.25rem; }
}