/* ─── Reset & Variables ──────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg:           #F7F6F2;
  --bg-dark:      #EFEDE7;
  --text:         #1A1A1A;
  --text-muted:   #5C5751;
  --accent:       #1B3A5C;
  --accent-hover: #142D48;
  --border:       #D4CFC4;
  --success:      #2D6A4F;
  --error:        #9B1C1C;
  --max-w:        1060px;
  --font-serif:   'Playfair Display', Georgia, serif;
  --font-sans:    'Inter', system-ui, -apple-system, sans-serif;
  --font-mono:    'JetBrains Mono', 'Fira Code', monospace;
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

/* ─── Typography ─────────────────────────────────────────────────────────── */
h1, h2, h3 {
  font-family: var(--font-serif);
  font-weight: 700;
  line-height: 1.2;
  color: var(--text);
}
h1 { font-size: clamp(2rem, 4vw, 3rem); }
h2 { font-size: clamp(1.5rem, 3vw, 2rem); }
h3 { font-size: 1.2rem; }
p  { max-width: 68ch; }

a { color: var(--accent); text-decoration: underline; text-underline-offset: 3px; }
a:hover { color: var(--accent-hover); }

.label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
}

/* ─── Layout ─────────────────────────────────────────────────────────────── */
.container {
  width: 100%;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 1.5rem;
}

section { padding: 5rem 0; }
section + section { border-top: 1px solid var(--border); }

/* ─── Navigation ─────────────────────────────────────────────────────────── */
nav {
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.5rem;
  max-width: var(--max-w);
  margin: 0 auto;
}

.nav-brand {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text);
  text-decoration: none;
  letter-spacing: -0.01em;
}
.nav-brand span {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 400;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-top: 1px;
}

.nav-links {
  display: flex;
  gap: 2rem;
  list-style: none;
}
.nav-links a {
  font-size: 0.875rem;
  text-decoration: none;
  color: var(--text-muted);
  transition: color 0.15s;
}
.nav-links a:hover,
.nav-links a.active { color: var(--text); }

.nav-cta {
  font-size: 0.8rem;
  font-weight: 600;
  background: var(--accent);
  color: #fff !important;
  padding: 0.5rem 1.1rem;
  border-radius: 3px;
  text-decoration: none !important;
  transition: background 0.15s;
}
.nav-cta:hover { background: var(--accent-hover) !important; color: #fff; }

/* ─── Hero ───────────────────────────────────────────────────────────────── */
.hero {
  padding: 6rem 0 5rem;
  border-bottom: 1px solid var(--border);
}

.hero-eyebrow {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1.25rem;
}

.hero h1 {
  max-width: 16ch;
  margin-bottom: 1.5rem;
}

.hero-lead {
  font-size: 1.15rem;
  color: var(--text-muted);
  max-width: 52ch;
  margin-bottom: 2.5rem;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.btn {
  display: inline-block;
  padding: 0.75rem 1.75rem;
  font-size: 0.9rem;
  font-weight: 600;
  text-decoration: none;
  border-radius: 3px;
  transition: background 0.15s, color 0.15s;
  cursor: pointer;
  border: none;
  font-family: var(--font-sans);
}
.btn-primary {
  background: var(--accent);
  color: #fff;
}
.btn-primary:hover { background: var(--accent-hover); color: #fff; }

.btn-ghost {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
}
.btn-ghost:hover { background: var(--bg-dark); color: var(--text); }

.hero-note {
  font-size: 0.825rem;
  color: var(--text-muted);
}

/* ─── Credential Strip ───────────────────────────────────────────────────── */
.cred-strip {
  display: flex;
  gap: 2.5rem;
  flex-wrap: wrap;
  padding: 3rem 0;
  border-bottom: 1px solid var(--border);
}
.cred-item {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}
.cred-item .value {
  font-family: var(--font-serif);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--accent);
}
.cred-item .desc {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

/* ─── Service Cards ──────────────────────────────────────────────────────── */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5px;
  background: var(--border);
  border: 1px solid var(--border);
  margin-top: 3rem;
}
.service-card {
  background: var(--bg);
  padding: 2.25rem;
}
.service-card .tag {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.75rem;
  display: block;
}
.service-card h3 {
  margin-bottom: 0.75rem;
}
.service-card p {
  font-size: 0.9rem;
  color: var(--text-muted);
}

/* ─── Section Header ─────────────────────────────────────────────────────── */
.section-header {
  margin-bottom: 3rem;
}
.section-header .label {
  display: block;
  margin-bottom: 0.75rem;
}
.section-header h2 {
  margin-bottom: 1rem;
}
.section-header p {
  color: var(--text-muted);
  font-size: 1.05rem;
}

/* ─── Two-column layout ──────────────────────────────────────────────────── */
.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 5rem;
  align-items: start;
}
@media (max-width: 720px) {
  .two-col { grid-template-columns: 1fr; gap: 2.5rem; }
}

/* ─── Fact List ──────────────────────────────────────────────────────────── */
.fact-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}
.fact-list li {
  display: flex;
  gap: 0.75rem;
  align-items: flex-start;
  font-size: 0.95rem;
}
.fact-list li::before {
  content: '—';
  color: var(--accent);
  font-family: var(--font-serif);
  flex-shrink: 0;
  margin-top: 0.05em;
}

/* ─── Detail Table ───────────────────────────────────────────────────────── */
.detail-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
  margin-top: 1.5rem;
}
.detail-table tr {
  border-bottom: 1px solid var(--border);
}
.detail-table td {
  padding: 0.85rem 0;
  vertical-align: top;
}
.detail-table td:first-child {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
  width: 38%;
  padding-right: 1.5rem;
  padding-top: 0.95rem;
}

/* ─── FAQ ────────────────────────────────────────────────────────────────── */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 0;
  margin-top: 3rem;
}
.faq-item {
  border-bottom: 1px solid var(--border);
}
.faq-item:first-child { border-top: 1px solid var(--border); }

details summary {
  cursor: pointer;
  padding: 1.5rem 0;
  font-family: var(--font-serif);
  font-size: 1.05rem;
  font-weight: 600;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  user-select: none;
}
details summary::-webkit-details-marker { display: none; }
details summary::after {
  content: '+';
  font-family: var(--font-mono);
  font-size: 1.2rem;
  color: var(--accent);
  flex-shrink: 0;
  transition: transform 0.2s;
}
details[open] summary::after { content: '−'; }

details .faq-body {
  padding-bottom: 1.75rem;
  color: var(--text-muted);
  font-size: 0.95rem;
  max-width: 68ch;
}
details .faq-body p + p { margin-top: 0.75rem; }

/* ─── Contact Form ───────────────────────────────────────────────────────── */
.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}
@media (max-width: 640px) {
  .form-grid { grid-template-columns: 1fr; }
}
.form-full { grid-column: 1 / -1; }

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}
.form-group label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
}
.form-group input,
.form-group select,
.form-group textarea {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 3px;
  padding: 0.7rem 0.85rem;
  font-family: var(--font-sans);
  font-size: 0.95rem;
  color: var(--text);
  transition: border-color 0.15s;
  width: 100%;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent);
}
.form-group textarea {
  resize: vertical;
  min-height: 120px;
}
.form-group select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%235C5751' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.85rem center;
  padding-right: 2.5rem;
}

.form-note {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 0.5rem;
}

#form-status {
  padding: 1rem 1.25rem;
  border-radius: 3px;
  font-size: 0.9rem;
  display: none;
  margin-top: 1rem;
}
#form-status.success {
  display: block;
  background: #ECFDF5;
  border: 1px solid #A7F3D0;
  color: var(--success);
}
#form-status.error {
  display: block;
  background: #FEF2F2;
  border: 1px solid #FECACA;
  color: var(--error);
}

/* ─── About Page ─────────────────────────────────────────────────────────── */
.about-lead {
  font-family: var(--font-serif);
  font-size: 1.3rem;
  line-height: 1.5;
  color: var(--text);
  max-width: 56ch;
  margin-bottom: 2rem;
}

.designation-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-top: 1rem;
}
.designation-list li {
  display: flex;
  gap: 0.75rem;
  font-size: 0.9rem;
}
.designation-list li .code {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  background: var(--bg-dark);
  border: 1px solid var(--border);
  padding: 0.1rem 0.5rem;
  border-radius: 2px;
  color: var(--accent);
  white-space: nowrap;
}

/* ─── Footer ─────────────────────────────────────────────────────────────── */
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;
  flex-wrap: wrap;
  gap: 1rem;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 1.5rem;
}
.footer-brand {
  font-family: var(--font-serif);
  font-size: 0.95rem;
  color: var(--text);
}
.footer-meta {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  text-transform: uppercase;
}
.footer-links {
  display: flex;
  gap: 1.5rem;
  list-style: none;
}
.footer-links a {
  font-size: 0.825rem;
  color: var(--text-muted);
  text-decoration: none;
}
.footer-links a:hover { color: var(--text); }

/* ─── Page header (inner pages) ─────────────────────────────────────────── */
.page-header {
  padding: 4rem 0 3rem;
  border-bottom: 1px solid var(--border);
}
.page-header .label { display: block; margin-bottom: 0.75rem; }
.page-header p {
  color: var(--text-muted);
  font-size: 1.05rem;
  margin-top: 1rem;
  max-width: 56ch;
}

/* ─── Hamburger button (hidden on desktop) ───────────────────────────────── */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  width: 36px;
  height: 36px;
}
.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform 0.2s, opacity 0.2s;
  transform-origin: center;
}
/* Animate to × when open */
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ─── Responsive nav ─────────────────────────────────────────────────────── */
@media (max-width: 640px) {
  .nav-toggle { display: flex; }

  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    gap: 0;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    box-shadow: 0 4px 12px rgba(0,0,0,0.08);
    padding: 0.5rem 0;
    z-index: 99;
  }
  .nav-links.open { display: flex; }
  .nav-links li { width: 100%; }
  .nav-links a {
    display: block;
    padding: 0.85rem 1.5rem;
    font-size: 1rem;
    border-bottom: 1px solid var(--border);
  }
  .nav-links li:last-child a { border-bottom: none; }
  .nav-cta {
    margin: 0.75rem 1.5rem;
    text-align: center;
    border-radius: 3px;
    border-bottom: none !important;
  }

  nav { position: sticky; }

  .cred-strip { gap: 1.5rem; }
  section { padding: 3.5rem 0; }
}