/* ==========================================================================
   KAPATE CONSULTANCY - CRISP EXECUTIVE LIGHT THEME
   Aesthetic: Pure White, Dark Charcoal Typography, Authentic Black Ink Signature, Minimalist Elegance
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@300;400;500;600;700;800&family=JetBrains+Mono:wght@400;500&display=swap');

/* --- Tokens & Variables --- */
:root {
  /* Crisp Light Palette */
  --bg-base: #FFFFFF;
  --bg-surface: #F8FAFC;
  --bg-surface-elevated: #F1F5F9;
  --bg-card: #FFFFFF;
  --bg-card-hover: #F8FAFC;
  --bg-header: rgba(255, 255, 255, 0.96);

  /* Clean Hairline Borders */
  --border-subtle: #E2E8F0;
  --border-medium: #CBD5E1;
  --border-focus: #0F172A;

  /* Executive Dark Accents */
  --accent-primary: #0F172A;
  --accent-hover: #1E293B;
  --accent-blue: #2563EB;
  
  /* Text */
  --text-primary: #0F172A;
  --text-secondary: #475569;
  --text-muted: #64748B;

  /* Typography */
  --font-main: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  /* Sizing & Radius */
  --container-max: 1200px;
  --nav-height: 84px;
  --radius: 6px;

  /* Transitions */
  --transition: 0.2s ease;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
}

body {
  font-family: var(--font-main);
  background-color: var(--bg-base);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

main {
  flex: 1;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-main);
  color: var(--text-primary);
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.02em;
}

h1 { font-size: clamp(2.2rem, 4vw, 3.4rem); font-weight: 800; }
h2 { font-size: clamp(1.8rem, 3vw, 2.4rem); }
h3 { font-size: clamp(1.2rem, 2vw, 1.45rem); font-weight: 600; }
h4 { font-size: 1.05rem; font-weight: 600; }

p {
  color: var(--text-secondary);
  font-size: 1rem;
  line-height: 1.65;
  margin-bottom: 1rem;
}
p:last-child { margin-bottom: 0; }

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition);
}

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

svg {
  max-width: 100%;
  vertical-align: middle;
}

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

.section-py {
  padding: clamp(3.5rem, 6vw, 5.5rem) 0;
}

.section-divider {
  border-top: 1px solid var(--border-subtle);
}

/* --- Brand Logo (Original Ink - Crisp Black Signature) --- */
.brand-logo-link {
  display: flex;
  align-items: center;
  text-decoration: none;
}

.brand-logo-img {
  height: 58px;
  width: auto;
  object-fit: contain;
  /* Natural authentic black ink on white */
  filter: none;
  transition: opacity var(--transition);
}

.brand-logo-img:hover {
  opacity: 0.8;
}

.brand-logo-footer {
  height: 64px;
  width: auto;
  filter: none;
}

/* --- Badges & Pills --- */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.3rem 0.75rem;
  font-size: 0.75rem;
  font-family: var(--font-mono);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  border-radius: var(--radius);
  background: var(--bg-surface-elevated);
  color: var(--text-muted);
  border: 1px solid var(--border-subtle);
  margin-bottom: 1rem;
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-family: var(--font-main);
  font-size: 0.925rem;
  font-weight: 600;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius);
  cursor: pointer;
  transition: all var(--transition);
  border: 1px solid transparent;
  white-space: nowrap;
}

.btn svg {
  width: 16px;
  height: 16px;
}

.btn-primary {
  background: #0F172A;
  color: #FFFFFF;
  border: 1px solid #0F172A;
}

.btn-primary:hover {
  background: #1E293B;
  border-color: #1E293B;
}

.btn-secondary {
  background: #FFFFFF;
  color: var(--text-primary);
  border: 1px solid var(--border-medium);
}

.btn-secondary:hover {
  background: var(--bg-surface);
  border-color: var(--text-primary);
}

.btn-subtle {
  background: transparent;
  color: var(--accent-blue);
  padding: 0;
  border: none;
  font-weight: 600;
}

.btn-subtle:hover {
  color: #1D4ED8;
}

/* --- Cards --- */
.glass-card, .simple-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius);
  padding: 2rem;
  position: relative;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.glass-card:hover, .simple-card:hover {
  border-color: var(--border-medium);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.03);
}

/* --- Section Headers --- */
.section-header {
  text-align: left;
  max-width: 760px;
  margin-bottom: clamp(2rem, 4vw, 3.5rem);
}

.section-header.text-center {
  text-align: center;
  margin-left: auto;
  margin-right: auto;
}

.section-header h2 {
  margin-top: 0.5rem;
  margin-bottom: 0.75rem;
}

.section-header p {
  font-size: 1.05rem;
  color: var(--text-secondary);
}

/* ==========================================================================
   NAVIGATION BAR
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  z-index: 1000;
  background-color: var(--bg-header);
  border-bottom: 1px solid var(--border-subtle);
  backdrop-filter: blur(8px);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.75rem;
  list-style: none;
}

.nav-link {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
  padding: 0.5rem 0;
  transition: color var(--transition);
}

.nav-link:hover, .nav-link.active {
  color: var(--text-primary);
  font-weight: 600;
}

/* Dropdown */
.nav-item-dropdown {
  position: relative;
}

.dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  width: 240px;
  background: #FFFFFF;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius);
  padding: 0.5rem 0;
  list-style: none;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition);
  z-index: 100;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.08);
}

.nav-item-dropdown:hover .dropdown-menu,
.nav-item-dropdown:focus-within .dropdown-menu {
  opacity: 1;
  visibility: visible;
}

.dropdown-menu a {
  display: block;
  padding: 0.6rem 1.25rem;
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.dropdown-menu a:hover {
  background: var(--bg-surface);
  color: var(--text-primary);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.menu-toggle {
  display: none;
  background: none;
  border: 1px solid var(--border-medium);
  border-radius: var(--radius);
  color: var(--text-primary);
  padding: 0.4rem 0.6rem;
  cursor: pointer;
  font-size: 0.85rem;
}

/* Mobile Drawer */
.mobile-nav-drawer {
  position: fixed;
  top: 0;
  right: -100%;
  width: 100%;
  max-width: 320px;
  height: 100vh;
  background: #FFFFFF;
  border-left: 1px solid var(--border-subtle);
  z-index: 1001;
  display: flex;
  flex-direction: column;
  padding: 4rem 2rem 2rem;
  transition: right var(--transition);
  overflow-y: auto;
}

.mobile-nav-drawer.open {
  right: 0;
}

.mobile-nav-overlay {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.4);
  z-index: 1000;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition);
}

.mobile-nav-overlay.visible {
  opacity: 1;
  visibility: visible;
}

.mobile-nav-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  margin-bottom: 2rem;
}

.mobile-nav-links a {
  font-size: 1rem;
  font-weight: 500;
  color: var(--text-secondary);
}

.mobile-nav-links a.active, .mobile-nav-links a:hover {
  color: var(--text-primary);
}

.mobile-nav-sublinks {
  list-style: none;
  padding-left: 1rem;
  margin-top: 0.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  border-left: 1px solid var(--border-subtle);
}

.mobile-nav-sublinks a {
  font-size: 0.9rem;
  color: var(--text-muted);
}

/* ==========================================================================
   HERO SECTION
   ========================================================================== */
.hero-section {
  padding-top: clamp(3.5rem, 6vw, 5.5rem);
  padding-bottom: clamp(3.5rem, 6vw, 5.5rem);
  border-bottom: 1px solid var(--border-subtle);
  background: #FFFFFF;
}

.hero-content {
  max-width: 840px;
}

.hero-content h1 {
  margin-top: 0.5rem;
  margin-bottom: 1.25rem;
  color: var(--text-primary);
}

.hero-subtitle {
  font-size: 1.15rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 2rem;
}

.hero-ctas {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 2rem;
}

.hero-trust-tag {
  font-size: 0.85rem;
  font-family: var(--font-mono);
  color: var(--text-muted);
}

/* ==========================================================================
   TRUST / CAPABILITIES STRIP
   ========================================================================== */
.trust-strip {
  border-bottom: 1px solid var(--border-subtle);
  background: var(--bg-surface);
  padding: 1.25rem 0;
}

.trust-strip-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1.25rem;
}

.trust-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-secondary);
}

/* ==========================================================================
   GRIDS (Principles, Services, Why, Industries)
   ========================================================================== */
.principles-grid, .services-grid, .why-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.5rem;
}

/* Service Card */
.service-card {
  background: #FFFFFF;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius);
  padding: 2rem;
  display: flex;
  flex-direction: column;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.service-card.has-image {
  padding: 0;
  overflow: hidden;
}

.service-card:hover {
  border-color: var(--border-medium);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.04);
}

.service-img-wrapper {
  width: 100%;
  height: 190px;
  overflow: hidden;
  position: relative;
  background: var(--bg-surface-elevated);
}

.service-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.service-card:hover .service-img {
  transform: scale(1.03);
}

.service-card-body {
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.service-number {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 1rem;
  display: block;
}

.service-title {
  font-size: 1.25rem;
  margin-bottom: 0.75rem;
  color: var(--text-primary);
}

.service-desc {
  flex-grow: 1;
  font-size: 0.95rem;
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
}

.service-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-top: auto;
}

.service-link:hover {
  color: var(--accent-blue);
}

/* Principle Card */
.principle-card {
  background: #FFFFFF;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius);
  padding: 2rem;
  transition: border-color var(--transition);
}

.principle-card:hover {
  border-color: var(--border-medium);
}

.principle-num {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 0.75rem;
  display: block;
}

.principle-title {
  font-size: 1.25rem;
  margin-bottom: 0.5rem;
}

/* Differentiator Card */
.why-card {
  background: #FFFFFF;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius);
  padding: 2rem;
  transition: border-color var(--transition);
}

.why-card:hover {
  border-color: var(--border-medium);
}

.why-title {
  font-size: 1.2rem;
  margin-bottom: 0.5rem;
}

/* Industry Cards with Photography */
.industry-card {
  background: #FFFFFF;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.industry-card:hover {
  border-color: var(--border-medium);
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.05);
}

.industry-img-wrapper {
  width: 100%;
  height: 200px;
  overflow: hidden;
  position: relative;
  background: var(--bg-surface-elevated);
}

.industry-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.industry-card:hover .industry-img {
  transform: scale(1.03);
}

.industry-content {
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.industry-title {
  font-size: 1.25rem;
  margin-bottom: 0.75rem;
}

.industry-desc {
  font-size: 0.925rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 1.25rem;
  flex-grow: 1;
}

.tech-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 0.75rem;
}

.tech-pill {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  padding: 0.2rem 0.5rem;
  border-radius: var(--radius);
  color: var(--text-secondary);
}

/* ==========================================================================
   PROCESS TIMELINE
   ========================================================================== */
.timeline-track {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1.5rem;
}

.timeline-step {
  display: flex;
  flex-direction: column;
}

.step-marker {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--text-muted);
  margin-bottom: 0.75rem;
}

.step-card {
  background: #FFFFFF;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius);
  padding: 1.5rem;
  flex: 1;
  transition: border-color var(--transition);
}

.step-card:hover {
  border-color: var(--border-medium);
}

.step-title {
  font-size: 1.1rem;
  margin-bottom: 0.5rem;
}

.step-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

/* ==========================================================================
   SIMPLE CTA BANNER
   ========================================================================== */
.cta-banner-section {
  border-top: 1px solid var(--border-subtle);
  background: var(--bg-surface);
}

.cta-box {
  background: #FFFFFF;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius);
  padding: clamp(2.5rem, 5vw, 4rem);
  text-align: center;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.02);
}

.cta-box h2 {
  margin-bottom: 1rem;
}

.cta-box p {
  max-width: 600px;
  margin: 0 auto 2rem auto;
  font-size: 1.1rem;
}

.cta-buttons {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 1rem;
}

/* ==========================================================================
   FOOTER
   ========================================================================== */
.site-footer {
  background: #FFFFFF;
  border-top: 1px solid var(--border-subtle);
  padding: 4rem 0 2rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
  gap: 2.5rem;
  margin-bottom: 3rem;
}

.footer-col-brand p {
  margin-top: 1rem;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.footer-col-title {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 1rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.footer-links a {
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.footer-links a:hover {
  color: var(--text-primary);
}

.footer-contact-item {
  display: flex;
  align-items: flex-start;
  gap: 0.65rem;
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin-bottom: 0.75rem;
}

.footer-contact-item svg {
  width: 16px !important;
  height: 16px !important;
  min-width: 16px !important;
  min-height: 16px !important;
  max-width: 16px !important;
  max-height: 16px !important;
  stroke: var(--text-secondary);
  flex-shrink: 0;
  margin-top: 3px;
  display: inline-block;
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border-subtle);
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* ==========================================================================
   FORMS & INPUTS
   ========================================================================== */
.contact-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 2.5rem;
}

.form-group {
  margin-bottom: 1.25rem;
}

.form-label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.4rem;
}

.form-control {
  width: 100%;
  padding: 0.75rem 1rem;
  font-family: var(--font-main);
  font-size: 0.95rem;
  background: #FFFFFF;
  border: 1px solid var(--border-medium);
  border-radius: var(--radius);
  color: var(--text-primary);
  outline: none;
  transition: border-color var(--transition);
}

.form-control:focus {
  border-color: #0F172A;
}

.form-control::placeholder {
  color: var(--text-muted);
}

textarea.form-control {
  resize: vertical;
  min-height: 120px;
}

.form-row-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}

.form-feedback {
  font-size: 0.8rem;
  color: #DC2626;
  margin-top: 0.3rem;
  display: none;
}

.form-group.has-error .form-control {
  border-color: #DC2626;
}

.form-group.has-error .form-feedback {
  display: block;
}

/* Modal Popup */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.6);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition);
}

.modal-backdrop.open {
  opacity: 1;
  visibility: visible;
}

.modal-dialog {
  background: #FFFFFF;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius);
  width: 100%;
  max-width: 480px;
  padding: 2.25rem;
  text-align: center;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.12);
}

/* FAQ */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.faq-item {
  background: #FFFFFF;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius);
  overflow: hidden;
}

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 1.5rem;
  background: none;
  border: none;
  font-family: var(--font-main);
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  text-align: left;
  cursor: pointer;
}

.faq-caret {
  width: 18px;
  height: 18px;
  color: var(--text-muted);
  transition: transform var(--transition);
  flex-shrink: 0;
}

.faq-item.active .faq-caret {
  transform: rotate(180deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition), padding var(--transition);
  padding: 0 1.5rem;
  color: var(--text-secondary);
  font-size: 0.925rem;
}

.faq-item.active .faq-answer {
  max-height: 350px;
  padding-bottom: 1.25rem;
}

/* Back to Top */
.back-to-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 40px;
  height: 40px;
  border-radius: var(--radius);
  background: #FFFFFF;
  border: 1px solid var(--border-medium);
  color: var(--text-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 990;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
}

.back-to-top:hover {
  background: #0F172A;
  color: #FFFFFF;
}

/* Clean Architecture Cards */
.arch-clean-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
}

.arch-clean-card {
  background: #FFFFFF;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius);
  padding: 1.75rem;
}

.arch-clean-card h4 {
  font-size: 1.1rem;
  margin-bottom: 0.75rem;
  color: var(--text-primary);
}

.arch-clean-card ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.arch-clean-card ul li::before {
  content: "— ";
  color: var(--text-muted);
}

/* Responsive */
@media (max-width: 900px) {
  .nav-links, .nav-actions .btn {
    display: none;
  }
  .menu-toggle {
    display: block;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
  .contact-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .site-header {
    height: 72px;
  }
  .brand-logo-img {
    height: 48px;
  }
  .form-row-2 {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
  .hero-ctas {
    flex-direction: column;
  }
  .hero-ctas .btn {
    width: 100%;
  }
}