/* ===========================================================
   OptecAus Consulting — shared stylesheet
   Brand: Direction A — "Aligned Signal"
   =========================================================== */

:root {
  --ink: #1B2340;
  --ink-800: #2A3457;
  --amber: #C97A2B;
  --amber-tint: #E8B87A;
  --slate: #46577A;
  --warm-white: #F7F5F1;
  --white: #FFFFFF;
  --border: #E1DCD1;
  --muted: #6B7290;

  --font-display: 'Sora', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --font-body: system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;

  --container: 1120px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--warm-white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img, svg { max-width: 100%; display: block; }

a { color: var(--amber); text-decoration: none; }
a:hover { color: #A8641F; }

h1, h2, h3 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.2;
  margin: 0;
  color: var(--ink);
}

p { margin: 0; }

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

/* ---------- Buttons ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 15px;
  padding: 14px 26px;
  border-radius: 8px;
  cursor: pointer;
  border: 1px solid transparent;
  transition: background 0.15s ease, color 0.15s ease, border-color 0.15s ease;
  white-space: nowrap;
}

.btn-primary {
  background: var(--amber);
  color: var(--white);
}
.btn-primary:hover { background: #A8641F; color: var(--white); }

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

.btn-on-dark {
  background: var(--amber);
  color: var(--white);
}
.btn-on-dark:hover { background: var(--amber-tint); color: var(--ink); }

/* ---------- Header / Nav ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(247, 245, 241, 0.92);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--border);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 0;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 19px;
  color: var(--ink);
}
.brand:hover { color: var(--ink); }

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
  font-weight: 500;
  font-size: 14.5px;
  color: var(--slate);
}

.nav-links a:not(.btn) { color: var(--slate); }
.nav-links a:not(.btn):hover { color: var(--ink); }
.nav-links a.active { color: var(--ink); font-weight: 600; }

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
}
.nav-toggle svg { width: 24px; height: 24px; }

@media (max-width: 760px) {
  .nav-links {
    position: fixed;
    inset: 65px 0 0 0;
    background: var(--warm-white);
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
    padding: 20px 24px 32px;
    transform: translateY(-8px);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.15s ease, transform 0.15s ease;
    border-bottom: 1px solid var(--border);
  }
  .nav-links.open {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
  }
  .nav-links a:not(.btn) {
    width: 100%;
    padding: 12px 0;
    border-bottom: 1px solid var(--border);
  }
  .nav-links .btn { margin-top: 12px; width: 100%; }
  .nav-toggle { display: inline-flex; }
}

/* ---------- Sections ---------- */

section { padding: 88px 0; }
section.tight { padding: 56px 0; }

.eyebrow {
  font: 600 12px/1 var(--font-body);
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--amber);
  margin-bottom: 14px;
}

.section-heading {
  font-size: 32px;
  margin-bottom: 18px;
  max-width: 640px;
}

.section-lead {
  font-size: 17px;
  color: var(--slate);
  max-width: 620px;
  margin-bottom: 8px;
}

.section-dark {
  background: var(--ink);
  color: var(--white);
}
.section-dark h1, .section-dark h2, .section-dark h3 { color: var(--white); }
.section-dark .section-lead { color: #B7BEDB; }

.section-alt { background: var(--white); }

/* ---------- Hero ---------- */

.hero {
  padding: 96px 0 88px;
}
.hero-inner { max-width: 680px; }
.hero h1 {
  font-size: 46px;
  line-height: 1.15;
  margin: 16px 0 20px;
}
.hero-sub {
  font-size: 18px;
  color: var(--slate);
  margin-bottom: 34px;
  max-width: 560px;
}
.hero-ctas { display: flex; gap: 14px; flex-wrap: wrap; }

/* ---------- Cards / grids ---------- */

.grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 22px;
}
@media (max-width: 860px) {
  .grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 600px) {
  .grid { grid-template-columns: 1fr; }
}

.card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.card.highlight {
  border-color: var(--amber);
  background: linear-gradient(180deg, #FFF8EF 0%, var(--white) 100%);
}

.card h3 { font-size: 17px; }
.card p { color: var(--slate); font-size: 14.5px; }

.card-tag {
  display: inline-block;
  font: 600 11px/1 var(--font-body);
  letter-spacing: .04em;
  text-transform: uppercase;
  color: var(--amber);
}

/* ---------- Steps ---------- */

.steps {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 22px;
}
@media (max-width: 860px) {
  .steps { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 560px) {
  .steps { grid-template-columns: 1fr; }
}
.step-num {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 15px;
  color: var(--amber);
  margin-bottom: 10px;
}
.step h3 { font-size: 16.5px; margin-bottom: 8px; }
.step p { color: var(--slate); font-size: 14.5px; }

/* ---------- Problem list ---------- */

.problem-list {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
  max-width: 600px;
}
.problem-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 15px;
  color: var(--slate);
}
.problem-list svg { flex-shrink: 0; margin-top: 3px; }

/* ---------- Credibility / proof ---------- */

.proof-list {
  list-style: none;
  margin: 20px 0 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.proof-list li {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  font-size: 15px;
  color: var(--slate);
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border);
}
.proof-list li:last-child { border-bottom: none; padding-bottom: 0; }

.placeholder-note {
  margin-top: 22px;
  padding: 16px 18px;
  border: 1px dashed var(--border);
  border-radius: 8px;
  color: var(--muted);
  font-size: 13.5px;
  font-style: italic;
}

/* ---------- Service detail blocks (Services page) ---------- */

.service-block {
  padding: 44px 0;
  border-bottom: 1px solid var(--border);
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 40px;
}
.service-block:first-of-type { padding-top: 0; }
.service-block:last-of-type { border-bottom: none; }
@media (max-width: 760px) {
  .service-block { grid-template-columns: 1fr; gap: 16px; }
}
.service-block h3 { font-size: 21px; }
.service-block .diff-tag {
  display: inline-block;
  margin-top: 10px;
  font: 600 11px/1 var(--font-body);
  letter-spacing: .04em;
  text-transform: uppercase;
  color: var(--amber);
  background: #FFF3E2;
  padding: 6px 10px;
  border-radius: 5px;
}
.service-body { display: flex; flex-direction: column; gap: 16px; }
.service-body h4 {
  font: 600 12px/1 var(--font-body);
  letter-spacing: .04em;
  text-transform: uppercase;
  color: var(--slate);
  margin: 0 0 6px;
}
.service-body p { color: var(--ink); font-size: 15px; }

/* ---------- CTA band ---------- */

.cta-band {
  background: var(--ink);
  color: var(--white);
  border-radius: 16px;
  padding: 56px 44px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 22px;
}
.cta-band h2 { color: var(--white); font-size: 28px; max-width: 560px; }

/* ---------- Footer ---------- */

.site-footer {
  border-top: 1px solid var(--border);
  padding: 40px 0;
}
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}
.footer-links {
  display: flex;
  gap: 24px;
  font-size: 13.5px;
  color: var(--slate);
}
.footer-links a { color: var(--slate); }
.footer-links a:hover { color: var(--ink); }
.footer-meta {
  font-size: 13px;
  color: var(--muted);
}

/* ---------- Contact page ---------- */

.contact-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 40px;
  max-width: 560px;
}
.contact-row {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 16px 0;
  border-bottom: 1px solid var(--border);
}
.contact-row:last-child { border-bottom: none; }
.contact-row .label {
  font: 600 11px/1 var(--font-body);
  letter-spacing: .04em;
  text-transform: uppercase;
  color: var(--muted);
}
.contact-row .value { font-size: 16px; color: var(--ink); }

/* ---------- About page ---------- */

.about-hero h1 { font-size: 38px; max-width: 640px; }
.about-copy { max-width: 660px; display: flex; flex-direction: column; gap: 18px; font-size: 16px; color: var(--ink); }
.about-copy h2 { font-size: 22px; margin-top: 12px; }

/* ---------- Utility ---------- */

.text-center { text-align: center; }
.mt-lg { margin-top: 48px; }
.max-w { max-width: 640px; }