/* ============================================================
   The Atapha Group — site styles
   Brand: primary blue #00438F, serif wordmark heritage.
   ============================================================ */

:root {
  --blue:        #00438F;
  --blue-dark:   #002f66;
  --blue-deep:   #001e40;
  --ink:         #14181f;
  --slate:       #45505f;
  --muted:       #6b7686;
  --line:        #e3e7ee;
  --paper:       #ffffff;
  --paper-alt:   #f5f7fb;
  --gold:        #b9944a;

  --font-serif: "Times New Roman", Times, Georgia, serif;
  --font-sans:  "Helvetica Neue", Helvetica, Arial, system-ui, sans-serif;

  --container: 1140px;
  --gutter: 24px;
  --radius: 4px;
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

/* ---------- Reset / base ---------- */
*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-sans);
  color: var(--ink);
  background: var(--paper);
  line-height: 1.65;
  font-size: 17px;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

a { color: var(--blue); text-decoration: none; transition: color 0.2s var(--ease); }
a:hover { color: var(--blue-dark); }

h1, h2, h3 {
  font-family: var(--font-serif);
  font-weight: 400;
  color: var(--ink);
  line-height: 1.15;
  letter-spacing: 0.005em;
  margin: 0;
}

p { margin: 0 0 1rem; }

.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--blue);
  color: #fff;
  padding: 10px 16px;
  z-index: 200;
}
.skip-link:focus { left: 8px; top: 8px; color: #fff; }

.eyebrow {
  font-family: var(--font-sans);
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--blue);
  margin: 0 0 1rem;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-block;
  font-family: var(--font-sans);
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  padding: 14px 28px;
  border-radius: var(--radius);
  border: 1.5px solid transparent;
  cursor: pointer;
  transition: all 0.22s var(--ease);
}
.btn-primary {
  background: var(--blue);
  color: #fff;
  border-color: var(--blue);
}
.btn-primary:hover {
  background: var(--blue-dark);
  border-color: var(--blue-dark);
  color: #fff;
  transform: translateY(-1px);
}
.btn-ghost {
  background: transparent;
  color: var(--blue);
  border-color: var(--line);
}
.btn-ghost:hover {
  border-color: var(--blue);
  color: var(--blue-dark);
}

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--line);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 76px;
}
.brand {
  display: inline-flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 6px;
}
.brand-logo { height: 30px; width: auto; }
.brand-tagline {
  font-family: var(--font-sans);
  font-size: 0.6rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.22em;
  color: var(--muted);
  padding-left: 2px;
}

.site-nav { display: flex; align-items: center; }

.nav-menu {
  list-style: none;
  display: flex;
  align-items: center;
  gap: 34px;
  margin: 0;
  padding: 0;
}
.nav-menu a {
  font-family: var(--font-sans);
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--slate);
  letter-spacing: 0.01em;
}
.nav-menu a:hover { color: var(--blue); }
.nav-cta {
  color: var(--blue) !important;
  border: 1.5px solid var(--line);
  padding: 9px 20px;
  border-radius: var(--radius);
  transition: all 0.2s var(--ease);
}
.nav-cta:hover { border-color: var(--blue); background: var(--paper-alt); }

/* Mobile nav toggle (pure CSS checkbox hack) */
.nav-toggle-input { display: none; }
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  cursor: pointer;
}
.nav-toggle span {
  display: block;
  height: 2px;
  width: 24px;
  background: var(--ink);
  transition: transform 0.25s var(--ease), opacity 0.25s var(--ease);
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  background:
    radial-gradient(120% 120% at 85% -10%, rgba(0, 67, 143, 0.10), transparent 55%),
    linear-gradient(180deg, var(--paper) 0%, var(--paper-alt) 100%);
  overflow: hidden;
}
.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 64px 64px;
  opacity: 0.35;
  mask-image: radial-gradient(80% 70% at 70% 0%, #000 0%, transparent 70%);
  -webkit-mask-image: radial-gradient(80% 70% at 70% 0%, #000 0%, transparent 70%);
  pointer-events: none;
}
.hero-inner {
  position: relative;
  z-index: 1;
  padding: 108px 24px 116px;
  max-width: 820px;
}
.hero-logo {
  --logo-h: clamp(72px, 11vw, 104px);
  height: var(--logo-h);
  width: auto;
  max-width: 100%;
  /* Pull left so the icon's box edge (inset ~11% by the SVG's built-in
     padding) lines up with the "C" of the headline below. */
  margin: 0 0 2rem calc(var(--logo-h) * -0.5);
}
.hero h1 {
  font-size: clamp(2.5rem, 6vw, 4rem);
  margin: 0 0 1.4rem;
  color: var(--ink);
}
.hero .lede {
  font-size: 1.2rem;
  color: var(--slate);
  max-width: 620px;
  margin: 0 0 2.2rem;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; }

/* ---------- Sections ---------- */
.section { padding: 100px 0; }
.section-alt { background: var(--paper-alt); }

.section-head { max-width: 680px; }
.section-head h2 {
  font-size: clamp(1.9rem, 3.6vw, 2.6rem);
  margin: 0 0 1.1rem;
}
.section-intro { font-size: 1.1rem; color: var(--slate); }

/* ---------- Service cards ---------- */
.cards {
  margin-top: 56px;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}
.card {
  background: var(--paper);
  padding: 40px 38px;
  transition: background 0.25s var(--ease);
}
.card:hover { background: var(--paper-alt); }
.card-mark {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  color: var(--gold);
  letter-spacing: 0.1em;
  margin-bottom: 20px;
}
.card h3 {
  font-size: 1.5rem;
  margin: 0 0 0.7rem;
}
.card p { color: var(--slate); margin: 0; }

.cards-more {
  margin: 34px 0 0;
  text-align: center;
  font-size: 1.05rem;
  color: var(--slate);
}
.cards-more a { font-weight: 600; }

/* ---------- Approach ---------- */
.approach-grid {
  display: grid;
  grid-template-columns: 1fr 1.05fr;
  gap: 64px;
  align-items: start;
}
.approach-head { position: sticky; top: 108px; }
.approach-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 8px;
}
.approach-list li {
  padding: 26px 0;
  border-top: 1px solid var(--line);
}
.approach-list li:first-child { border-top: none; padding-top: 0; }
.approach-list h3 {
  font-size: 1.3rem;
  margin: 0 0 0.4rem;
}
.step-num {
  font-family: var(--font-sans);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  color: var(--gold);
  margin-right: 12px;
  vertical-align: middle;
}
.approach-list p { color: var(--slate); margin: 0; }

/* ---------- About ---------- */
.about-grid {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 64px;
  align-items: center;
}
.about-copy p { color: var(--slate); }
.about-copy h2 { margin-bottom: 1.2rem; }

/* Founder card */
.founder-card {
  background: var(--blue-deep);
  background-image: radial-gradient(120% 90% at 50% 0%, rgba(255, 255, 255, 0.08), transparent 60%);
  border-radius: var(--radius);
  padding: 56px 40px;
  text-align: center;
  color: #fff;
}
.founder-photo {
  width: 140px;
  height: 140px;
  margin: 0 auto 26px;
  border-radius: 50%;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.18);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4),
              inset 0 0 0 5px rgba(255, 255, 255, 0.04);
}
.founder-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 55% 50%;
}
.founder-name {
  font-family: var(--font-serif);
  font-size: 1.7rem;
  line-height: 1.2;
  margin: 0;
  color: #fff;
}
.founder-divider {
  width: 40px;
  height: 1px;
  background: rgba(255, 255, 255, 0.25);
  margin: 18px auto;
}
.founder-role {
  font-family: var(--font-sans);
  text-transform: uppercase;
  letter-spacing: 0.16em;
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--gold);
  margin: 0;
}

/* Credential detail row */
.about-detail {
  margin-top: 64px;
  padding-top: 48px;
  border-top: 1px solid var(--line);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
}
.detail-title {
  font-family: var(--font-sans);
  text-transform: uppercase;
  letter-spacing: 0.16em;
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--blue);
  margin: 0 0 20px;
}
.detail-lead { color: var(--slate); margin: 0 0 18px; }
.tag-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.tag-list li {
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--slate);
  background: var(--paper-alt);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 8px 16px;
}
.journal-list {
  list-style: none;
  margin: 0;
  padding: 0;
}
.journal-list li {
  font-family: var(--font-serif);
  font-size: 1.12rem;
  color: var(--ink);
  padding: 12px 0;
  border-top: 1px solid var(--line);
}
.journal-list li:first-child { border-top: none; padding-top: 0; }

/* ---------- Contact ---------- */
.section-contact { background: var(--paper-alt); }
.contact-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: start;
}
.contact-direct { margin-top: 1.5rem; font-size: 1.05rem; color: var(--slate); }
.contact-form {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 36px;
}
.field { margin-bottom: 20px; }
.field label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--ink);
  margin-bottom: 8px;
}
.field .optional { font-weight: 400; color: var(--muted); }
.field input,
.field textarea {
  width: 100%;
  font-family: var(--font-sans);
  font-size: 1rem;
  color: var(--ink);
  padding: 12px 14px;
  border: 1.5px solid var(--line);
  border-radius: var(--radius);
  background: var(--paper);
  transition: border-color 0.2s var(--ease), box-shadow 0.2s var(--ease);
}
.field input:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--blue);
  box-shadow: 0 0 0 3px rgba(0, 67, 143, 0.12);
}
.field textarea { resize: vertical; }

/* Honeypot: kept in the DOM (so bots fill it) but hidden from humans and
   assistive tech. Positioned off-screen rather than display:none, since some
   bots skip display:none fields. */
.hp-field {
  position: absolute;
  left: -9999px;
  top: auto;
  width: 1px;
  height: 1px;
  overflow: hidden;
}
.contact-form .btn { width: 100%; margin-top: 4px; }
.form-note {
  margin: 16px 0 0;
  font-size: 0.82rem;
  color: var(--muted);
  text-align: center;
}

/* ---------- Form messages (Formspree AJAX) ---------- */
/* Containers are empty until the library injects text, so :not(:empty)
   keeps them invisible until there's something to show. */
.form-success:not(:empty) {
  background: #eef6ef;
  border: 1px solid #cfe4d1;
  color: #235c30;
  border-radius: var(--radius);
  padding: 16px 18px;
  margin-bottom: 22px;
  font-size: 0.95rem;
}
.form-error:not(:empty) {
  background: #fbecec;
  border: 1px solid #f0cfcf;
  color: #a12a2a;
  border-radius: var(--radius);
  padding: 14px 16px;
  margin-bottom: 22px;
  font-size: 0.95rem;
}
.field-error:not(:empty) {
  display: block;
  color: #b3261e;
  font-size: 0.82rem;
  margin-top: 6px;
}
.field input[aria-invalid="true"],
.field textarea[aria-invalid="true"] {
  border-color: #d16a66;
  box-shadow: 0 0 0 3px rgba(209, 106, 102, 0.14);
}

/* ---------- Footer ---------- */
.site-footer {
  background: var(--blue-deep);
  color: #c6d2e4;
  padding: 64px 0 32px;
}
.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 40px;
  flex-wrap: wrap;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}
.footer-logo { height: 30px; margin-bottom: 18px; }
.footer-tagline {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  color: #fff;
  margin: 0 0 8px;
}
.footer-tag { color: #93a6c2; max-width: 340px; margin: 0; font-size: 0.95rem; }
.footer-nav { display: flex; gap: 28px; flex-wrap: wrap; }
.footer-nav a {
  color: #c6d2e4;
  font-size: 0.95rem;
  font-weight: 500;
}
.footer-nav a:hover { color: #fff; }
.footer-bottom {
  padding-top: 24px;
  font-size: 0.85rem;
  color: #7f93b2;
}
.footer-bottom p { margin: 0; }

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width: 900px) {
  .approach-grid,
  .about-grid,
  .about-detail,
  .contact-inner { grid-template-columns: 1fr; gap: 40px; }
  .approach-head { position: static; }
}

@media (max-width: 720px) {
  body { font-size: 16px; }
  .section { padding: 72px 0; }
  .hero-inner { padding: 76px 24px 84px; }
  .cards { grid-template-columns: 1fr; }

  .brand-tagline { display: none; }

  /* Mobile navigation */
  .nav-toggle { display: flex; }
  .nav-menu {
    position: absolute;
    top: 76px;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: var(--paper);
    border-bottom: 1px solid var(--line);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.06);
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s var(--ease);
  }
  .nav-toggle-input:checked ~ .nav-menu { max-height: 340px; }
  .nav-menu li { border-top: 1px solid var(--line); }
  .nav-menu a {
    display: block;
    padding: 16px 24px;
    font-size: 1rem;
  }
  .nav-cta {
    border: none !important;
    border-radius: 0;
    margin: 0;
  }
  /* Hamburger -> X */
  .nav-toggle-input:checked ~ .nav-toggle span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .nav-toggle-input:checked ~ .nav-toggle span:nth-child(2) { opacity: 0; }
  .nav-toggle-input:checked ~ .nav-toggle span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition: none !important; }
}