/* ==========================================================================
   TRUSTRUCT CONSULTANCY - UI COMPONENTS & INTERACTION STYLES
   Theme: Ultra-Clean Architectural & Structural Engineering
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. NAVIGATION BAR
   -------------------------------------------------------------------------- */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  z-index: 100;
  transition: all var(--transition-normal);
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-subtle);
}

.navbar.scrolled {
  background: rgba(255, 255, 255, 0.98);
  box-shadow: var(--shadow-sm);
}

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

.brand-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.brand-logo img {
  height: 44px;
  width: auto;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2.25rem;
  list-style: none;
}

.nav-item {
  position: relative;
}

.nav-link {
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.92rem;
  color: var(--text-secondary);
  position: relative;
  padding: 0.75rem 0;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  transition: color var(--transition-fast);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent-cyan);
  transition: width var(--transition-fast);
  border-radius: var(--radius-full);
}

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

.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

/* Nav Dropdown Menu */
.nav-dropdown {
  position: absolute;
  top: 100%;
  left: -1rem;
  width: 320px;
  background: #FFFFFF;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 0.75rem 0;
  box-shadow: var(--shadow-md);
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: all var(--transition-fast);
  list-style: none;
  z-index: 120;
}

.nav-item:hover .nav-dropdown,
.nav-dropdown.show {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dropdown-item {
  display: block;
  padding: 0.6rem 1.25rem;
  font-size: 0.88rem;
  color: var(--text-secondary);
  font-weight: 500;
  transition: all var(--transition-fast);
}

.dropdown-item:hover {
  background: var(--bg-secondary);
  color: var(--accent-cyan);
  padding-left: 1.5rem;
}

.dropdown-divider {
  height: 1px;
  background: var(--border-subtle);
  margin: 0.5rem 0;
}

/* Mobile Menu Toggle */
.mobile-toggle {
  display: none;
  background: transparent;
  border: none;
  color: var(--text-primary);
  cursor: pointer;
  padding: 0.5rem;
  z-index: 101;
}

.mobile-toggle svg {
  width: 28px;
  height: 28px;
}

/* --------------------------------------------------------------------------
   2. BUTTONS & CTA
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  padding: 0.8rem 1.6rem;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.92rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
  border: 1px solid transparent;
  text-decoration: none;
  white-space: nowrap;
}

.btn-primary {
  background: var(--text-primary);
  color: var(--text-inverse);
  border-color: var(--text-primary);
  box-shadow: 0 4px 12px rgba(15, 23, 42, 0.15);
}

.btn-primary:hover {
  background: var(--accent-cyan);
  border-color: var(--accent-cyan);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(2, 132, 199, 0.25);
}

.btn-outline {
  background: #FFFFFF;
  color: var(--text-primary);
  border-color: var(--border-subtle);
  box-shadow: var(--shadow-sm);
}

.btn-outline:hover {
  border-color: var(--text-primary);
  background: var(--bg-secondary);
  transform: translateY(-2px);
}

.btn-amber {
  background: var(--accent-amber);
  color: #FFFFFF;
  border-color: var(--accent-amber);
  box-shadow: 0 4px 12px rgba(217, 119, 6, 0.2);
}

.btn-amber:hover {
  background: #b45309;
  transform: translateY(-2px);
}

.btn-sm {
  padding: 0.5rem 1.1rem;
  font-size: 0.85rem;
}

.btn-lg {
  padding: 1.05rem 2.2rem;
  font-size: 1rem;
}

/* --------------------------------------------------------------------------
   3. HERO SECTION (ULTRA CLEAN & ARCHITECTURAL)
   -------------------------------------------------------------------------- */
.hero {
  position: relative;
  min-height: 90vh;
  display: flex;
  align-items: center;
  padding-top: calc(var(--header-height) + 1rem);
  padding-bottom: 4rem;
  overflow: hidden;
  background: linear-gradient(180deg, #FFFFFF 0%, var(--bg-secondary) 100%);
}

.hero-bg-image {
  position: absolute;
  top: 0;
  right: 0;
  width: 55%;
  height: 100%;
  object-fit: cover;
  opacity: 0.15;
  mask-image: linear-gradient(to right, transparent 0%, black 50%);
  -webkit-mask-image: linear-gradient(to right, transparent 0%, black 50%);
  z-index: 0;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  align-items: center;
  gap: 3.5rem;
  position: relative;
  z-index: 2;
}

.hero-content {
  max-width: 720px;
}

.hero-subtitle {
  margin-bottom: 1.25rem;
}

.hero-title {
  margin-bottom: 1.5rem;
  color: var(--text-primary);
  line-height: 1.08;
}

.hero-description {
  font-size: 1.15rem;
  color: var(--text-secondary);
  margin-bottom: 2.25rem;
  line-height: 1.6;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  flex-wrap: wrap;
}

/* Hero Stats Bar */
.hero-stats {
  display: flex;
  gap: 3rem;
  margin-top: 3.5rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border-subtle);
}

.stat-item {
  display: flex;
  flex-direction: column;
}

.stat-number {
  font-family: var(--font-display);
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1;
}

.stat-label {
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-top: 0.35rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 600;
}

/* --------------------------------------------------------------------------
   4. SERVICE CARDS & MATRIX (CLEAN ARCHITECTURAL CARDS)
   -------------------------------------------------------------------------- */
.service-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 2.25rem 2rem;
  position: relative;
  overflow: hidden;
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  box-shadow: var(--shadow-sm);
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: var(--accent-cyan);
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.service-card:hover {
  border-color: var(--border-highlight);
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.service-card:hover::before {
  opacity: 1;
}

.service-number {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--accent-cyan);
  margin-bottom: 1.25rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.service-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background: var(--accent-cyan-light);
  color: var(--accent-cyan);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
}

.service-icon svg {
  width: 24px;
  height: 24px;
}

.service-card-title {
  font-size: 1.3rem;
  margin-bottom: 0.75rem;
  color: var(--text-primary);
}

.service-tagline {
  font-size: 0.94rem;
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
  line-height: 1.55;
}

.service-deliverables-preview {
  margin-top: auto;
  padding-top: 1.25rem;
  border-top: 1px dashed var(--border-subtle);
}

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

.deliverable-pill {
  font-size: 0.75rem;
  padding: 0.25rem 0.65rem;
  border-radius: var(--radius-sm);
  background: var(--bg-tertiary);
  color: var(--text-secondary);
  border: 1px solid var(--border-subtle);
  font-weight: 500;
}

/* Service Detail Modal / Drawer */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(15, 23, 42, 0.6);
  backdrop-filter: blur(8px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-fast);
}

.modal-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.modal-container {
  background: #FFFFFF;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  max-width: 850px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  position: relative;
  padding: 2.5rem;
  box-shadow: var(--shadow-lg);
  transform: scale(0.96);
  transition: transform var(--transition-normal);
}

.modal-overlay.active .modal-container {
  transform: scale(1);
}

.modal-close {
  position: absolute;
  top: 1.5rem;
  right: 1.5rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  color: var(--text-primary);
  width: 38px;
  height: 38px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
}

.modal-close:hover {
  background: var(--text-primary);
  color: var(--text-inverse);
  transform: rotate(90deg);
}

/* Modal Content Styling */
.modal-header {
  margin-bottom: 2rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border-subtle);
}

.modal-services-list,
.modal-deliverables-list {
  list-style: none;
  display: grid;
  gap: 0.85rem;
  margin-top: 1rem;
}

.modal-item {
  display: flex;
  align-items: flex-start;
  gap: 0.85rem;
  font-size: 0.98rem;
  color: var(--text-secondary);
  line-height: 1.55;
}

.modal-item svg {
  width: 18px;
  height: 18px;
  color: var(--accent-cyan);
  flex-shrink: 0;
  margin-top: 0.2rem;
}

/* --------------------------------------------------------------------------
   5. WHY CHOOSE US - 5 PILLARS
   -------------------------------------------------------------------------- */
.pillars-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 1.25rem;
}

.pillar-card {
  background: #FFFFFF;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 2rem 1.25rem;
  text-align: center;
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
  align-items: center;
  box-shadow: var(--shadow-sm);
}

.pillar-card:hover {
  border-color: var(--accent-amber);
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.pillar-icon {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--accent-amber-light);
  color: var(--accent-amber);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
}

.pillar-title {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  color: var(--text-primary);
}

.pillar-desc {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.5;
}

/* --------------------------------------------------------------------------
   6. FOUNDER / PRINCIPAL CONSULTANT SECTION
   -------------------------------------------------------------------------- */
.founder-card {
  background: #FFFFFF;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 3rem;
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 3.5rem;
  align-items: center;
  box-shadow: var(--shadow-md);
}

.founder-quote {
  font-size: 1.2rem;
  font-style: italic;
  color: var(--text-primary);
  margin-bottom: 1.5rem;
  line-height: 1.6;
}

.founder-meta {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-top: 1.5rem;
}

.founder-avatar {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: var(--text-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.3rem;
  color: var(--text-inverse);
}

.founder-details h4 {
  font-size: 1.15rem;
  margin-bottom: 0.2rem;
}

.founder-details p {
  font-size: 0.88rem;
  color: var(--accent-cyan);
  font-weight: 600;
}

/* --------------------------------------------------------------------------
   7. INTERACTIVE RFP / SCOPE GENERATOR
   -------------------------------------------------------------------------- */
.rfp-box {
  background: #FFFFFF;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  box-shadow: var(--shadow-md);
}

.asset-type-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
  margin-top: 1rem;
  margin-bottom: 2rem;
}

.asset-option {
  background: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 1.1rem 1rem;
  text-align: center;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.asset-option:hover,
.asset-option.selected {
  border-color: var(--accent-cyan);
  background: var(--accent-cyan-light);
}

.asset-option.selected {
  box-shadow: 0 0 0 2px var(--accent-cyan);
}

.service-checkbox-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
  margin-top: 1rem;
  margin-bottom: 2rem;
}

.service-checkbox-card {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 1rem;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.service-checkbox-card:hover {
  border-color: var(--border-highlight);
}

.service-checkbox-card input[type="checkbox"] {
  accent-color: var(--accent-cyan);
  width: 18px;
  height: 18px;
  margin-top: 0.15rem;
}

.scope-summary-preview {
  background: var(--bg-secondary);
  border: 1px dashed var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  margin-top: 2rem;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--text-primary);
  white-space: pre-wrap;
}

/* --------------------------------------------------------------------------
   8. FORM ELEMENTS
   -------------------------------------------------------------------------- */
.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}

.form-label {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-primary);
}

.form-input,
.form-select,
.form-textarea {
  background: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 0.85rem 1rem;
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 0.95rem;
  transition: border-color var(--transition-fast);
  outline: none;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  border-color: var(--accent-cyan);
  box-shadow: 0 0 0 3px rgba(2, 132, 199, 0.15);
  background: #FFFFFF;
}

/* --------------------------------------------------------------------------
   9. FOOTER (CLEAN DARK FOOTER FOR CONTRAST)
   -------------------------------------------------------------------------- */
.footer {
  background: var(--bg-dark-accent);
  color: #F8FAFC;
  border-top: 1px solid var(--border-subtle);
  padding: 5rem 0 2.5rem;
  position: relative;
  z-index: 1;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 3rem;
  margin-bottom: 4rem;
}

.footer-brand p {
  margin-top: 1.25rem;
  font-size: 0.92rem;
  color: #94A3B8;
  max-width: 320px;
}

.footer-heading {
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
  color: #FFFFFF;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.footer-links a {
  color: #CBD5E1;
  font-size: 0.92rem;
}

.footer-links a:hover {
  color: #38BDF8;
}

.footer-bottom {
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.85rem;
  color: #94A3B8;
  flex-wrap: wrap;
  gap: 1rem;
}

/* Responsive Adjustments & Mobile Overflow Fixes */
@media (max-width: 1024px) {
  .pillars-grid { grid-template-columns: repeat(3, 1fr); }
  .founder-card { grid-template-columns: 1fr; }
  .asset-type-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .hero {
    min-height: auto;
    padding-top: calc(var(--header-height) + 1.5rem);
    padding-bottom: 3rem;
  }

  .hero-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .hero-bg-image {
    width: 100%;
    opacity: 0.08;
  }

  .hero-actions {
    flex-direction: column;
    width: 100%;
  }

  .hero-actions .btn {
    width: 100%;
  }

  .hero-stats {
    flex-direction: column;
    gap: 1.5rem;
    margin-top: 2rem;
    padding-top: 1.5rem;
  }

  .nav-links {
    position: fixed;
    top: var(--header-height);
    left: 0;
    width: 100vw;
    max-width: 100vw;
    background: #FFFFFF;
    border-bottom: 1px solid var(--border-subtle);
    flex-direction: column;
    padding: 1.5rem;
    gap: 1rem;
    transform: translateY(-150%);
    transition: transform var(--transition-normal);
    box-shadow: var(--shadow-md);
    overflow-y: auto;
    max-height: calc(100vh - var(--header-height));
  }

  .nav-links.active {
    transform: translateY(0);
  }

  .nav-dropdown {
    position: static;
    width: 100%;
    box-shadow: none;
    border: none;
    background: var(--bg-secondary);
    border-radius: var(--radius-sm);
    margin-top: 0.5rem;
    opacity: 1;
    visibility: visible;
    transform: none;
    display: none;
  }

  .nav-item.active .nav-dropdown,
  .nav-item:hover .nav-dropdown {
    display: block;
  }

  .mobile-toggle {
    display: block;
  }

  .pillars-grid {
    grid-template-columns: 1fr;
  }

  .service-checkbox-grid {
    grid-template-columns: 1fr;
  }

  .asset-type-grid {
    grid-template-columns: 1fr;
  }

  .rfp-box {
    padding: 1.25rem;
    width: 100%;
    box-sizing: border-box;
  }

  .modal-container {
    padding: 1.5rem 1.25rem;
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
  }

  .scope-summary-preview {
    white-space: pre-wrap;
    word-break: break-word;
    overflow-x: auto;
    max-width: 100%;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
    align-items: center;
  }
}