/**
 * ==============================================================================
 * LYFMATESTRIX RESPONSIVE UI COMPONENTS (PC, IPAD, & MOBILE OPTIMIZED)
 * Palette: Classic Default Strix Royal Blue #4361EE
 * ==============================================================================
 */

/* -----------------------------------------------------------------------------
 * 1. NAVIGATION BAR (RESPONSIVE PC & MOBILE)
 * ----------------------------------------------------------------------------- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 74px;
  background-color: rgba(248, 250, 252, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-subtle);
  z-index: 1000;
  transition: background-color var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
}

.site-header.is-scrolled {
  background-color: rgba(255, 255, 255, 0.96);
  box-shadow: 0 4px 20px -4px rgba(15, 23, 42, 0.08);
  border-color: rgba(203, 213, 225, 0.6);
}

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

.brand-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--text-primary);
  font-weight: 700;
  font-size: 1.25rem;
  letter-spacing: -0.02em;
  user-select: none;
}

.brand-logo-img {
  width: 38px;
  height: 38px;
  object-fit: contain;
  border-radius: 8px;
  display: block;
}

.brand-name {
  color: var(--text-primary);
  font-weight: 700;
}

.brand-name span {
  color: var(--primary);
}

/* Desktop Navigation Links (>=1024px) */
.nav-desktop {
  display: none;
  align-items: center;
  gap: var(--space-8);
}

.nav-link {
  color: var(--text-secondary);
  font-size: 0.9375rem;
  font-weight: 600;
  padding: 8px 0;
  position: relative;
  transition: color var(--transition-fast);
}

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

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

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 2px;
  background-color: var(--primary);
  border-radius: var(--radius-full);
}

.header-cta-group {
  display: none;
  align-items: center;
  gap: var(--space-4);
}

/* Mobile Hamburger Toggle */
.mobile-nav-toggle {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 6px;
  width: 44px;
  height: 44px;
  padding: 10px;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  cursor: pointer;
  color: var(--text-primary);
  box-shadow: var(--shadow-xs);
  transition: all var(--transition-fast);
}

.mobile-nav-toggle:hover {
  background: var(--bg-surface-secondary);
  border-color: var(--border-medium);
}

.hamburger-line {
  display: block;
  width: 22px;
  height: 2px;
  background-color: var(--text-primary);
  border-radius: 2px;
  transition: transform var(--transition-base), opacity var(--transition-base);
}

.mobile-nav-toggle[aria-expanded="true"] .hamburger-line:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}

.mobile-nav-toggle[aria-expanded="true"] .hamburger-line:nth-child(2) {
  opacity: 0;
}

.mobile-nav-toggle[aria-expanded="true"] .hamburger-line:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

/* Mobile Navigation Drawer (No Glitch / Fluid Transition) */
.mobile-nav-drawer {
  position: fixed;
  top: 74px;
  left: 0;
  right: 0;
  background-color: #FFFFFF;
  border-bottom: 1px solid var(--border-subtle);
  box-shadow: 0 20px 40px -10px rgba(15, 23, 42, 0.15);
  padding: var(--space-6) var(--space-6) var(--space-8);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  transform: translateY(-10px);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: transform 220ms ease-out, opacity 220ms ease-out, visibility 220ms;
  z-index: 999;
  max-height: calc(100vh - 74px);
  overflow-y: auto;
}

.mobile-nav-drawer.is-open {
  transform: translateY(0);
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

.mobile-nav-link {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text-primary);
  padding: 14px 16px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: background-color var(--transition-fast), color var(--transition-fast);
}

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

.mobile-nav-drawer-actions {
  margin-top: var(--space-4);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.mobile-nav-drawer-actions .btn,
.mobile-nav-drawer-actions .btn-playstore {
  width: 100%;
  min-height: 50px;
  justify-content: center;
}

/* -----------------------------------------------------------------------------
 * 2. BUTTONS
 * ----------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 22px;
  font-size: 0.9375rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
  line-height: 1.25;
  text-decoration: none;
  box-sizing: border-box;
}

.btn-primary {
  background: var(--primary-gradient);
  color: #FFFFFF;
  border-color: var(--primary);
  box-shadow: 0 4px 14px rgba(67, 97, 238, 0.28);
}

.btn-primary:hover {
  background: linear-gradient(135deg, #445FE8 0%, #3751D9 100%);
  color: #FFFFFF;
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(67, 97, 238, 0.38);
}

.btn-secondary {
  background-color: var(--bg-surface);
  color: var(--text-primary);
  border-color: var(--border-medium);
  box-shadow: var(--shadow-xs);
}

.btn-secondary:hover {
  background-color: var(--bg-surface-secondary);
  border-color: var(--border-medium);
  color: var(--primary);
  transform: translateY(-1px);
}

.btn-outline {
  background-color: transparent;
  color: var(--primary);
  border-color: rgba(67, 97, 238, 0.4);
}

.btn-outline:hover {
  background-color: var(--primary-light);
  border-color: var(--primary);
  color: var(--primary-hover);
}

.btn-lg {
  padding: 12px 24px;
  font-size: 1rem;
  min-height: 52px;
  border-radius: var(--radius-lg);
  box-sizing: border-box;
}

.btn-sm {
  padding: 8px 16px;
  font-size: 0.8125rem;
}

/* Google Play Store Badge Button */
.btn-playstore {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  background-color: #0F172A;
  color: #FFFFFF;
  border: 1.5px solid rgba(255, 255, 255, 0.18);
  border-radius: var(--radius-lg);
  padding: 8px 20px;
  min-height: 52px;
  text-decoration: none;
  transition: all var(--transition-fast);
  box-shadow: 0 4px 14px rgba(15, 23, 42, 0.35);
  cursor: pointer;
  box-sizing: border-box;
  white-space: nowrap;
}

.btn-playstore:hover {
  background-color: #1E293B;
  border-color: rgba(67, 97, 238, 0.6);
  color: #FFFFFF;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(67, 97, 238, 0.35);
}

.btn-playstore-icon {
  width: 24px;
  height: 24px;
  flex-shrink: 0;
}

.btn-playstore-text {
  display: flex;
  flex-direction: column;
  text-align: left;
  line-height: 1.15;
}

.btn-playstore-tag {
  font-size: 0.625rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #94A3B8;
}

.btn-playstore-title {
  font-size: 1rem;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: #FFFFFF;
}

@media (max-width: 480px) {
  .btn-mobile-full {
    width: 100%;
  }
}

/* -----------------------------------------------------------------------------
 * 3. CARDS & ELEVATED SURFACES
 * ----------------------------------------------------------------------------- */
.card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  padding: clamp(1.5rem, 4vw, 2.25rem);
  position: relative;
  box-shadow: var(--shadow-card);
  transition: border-color var(--transition-base), transform var(--transition-base), box-shadow var(--transition-base);
}

.card:hover {
  border-color: rgba(67, 97, 238, 0.3);
}

.card-interactive:hover {
  border-color: var(--primary);
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.card-header {
  margin-bottom: var(--space-4);
}

.card-title {
  font-size: 1.25rem;
  color: var(--text-primary);
  margin-bottom: var(--space-2);
}

.card-subtitle {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* -----------------------------------------------------------------------------
 * 4. SECTION HEADERS & LABELS
 * ----------------------------------------------------------------------------- */
.section-header {
  margin-bottom: clamp(2rem, 5vw, 3.5rem);
}

.section-header-center {
  text-align: center;
  max-width: 760px;
  margin-left: auto;
  margin-right: auto;
}

.section-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--primary);
  font-size: 0.8125rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: var(--space-3);
}

.section-title {
  margin-bottom: var(--space-4);
  color: var(--text-primary);
}

.section-lead {
  font-size: clamp(1rem, 2vw, 1.15rem);
  color: var(--text-secondary);
  line-height: 1.65;
}

/* -----------------------------------------------------------------------------
 * 5. RESPONSIVE GRIDS (PC, IPAD, & MOBILE READY)
 * ----------------------------------------------------------------------------- */
.grid-2 {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(1.25rem, 3vw, 2rem);
}

.grid-3 {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(1.25rem, 3vw, 2rem);
}

.grid-4 {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(1rem, 2.5vw, 1.5rem);
}

/* Technical Specification Rows */
.spec-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  margin-top: var(--space-6);
}

.spec-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 0.9375rem;
  color: var(--text-secondary);
}

.spec-icon {
  color: var(--primary);
  flex-shrink: 0;
  margin-top: 3px;
  font-size: 1rem;
}

/* Highlight Callout Box */
.callout-box {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-left: 4px solid var(--primary);
  border-radius: var(--radius-md);
  padding: clamp(1.25rem, 3vw, 1.75rem);
  margin: var(--space-6) 0;
  box-shadow: var(--shadow-sm);
}

.callout-title {
  color: var(--text-primary);
  font-weight: 700;
  font-size: 1.125rem;
  margin-bottom: var(--space-2);
}

/* -----------------------------------------------------------------------------
 * 6. FORMS & INPUTS
 * ----------------------------------------------------------------------------- */
.form-group {
  margin-bottom: var(--space-5);
}

.form-label {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 6px;
}

.form-label-required::after {
  content: " *";
  color: var(--primary);
}

.form-input,
.form-textarea,
.form-select {
  width: 100%;
  background-color: #FFFFFF;
  border: 1.5px solid var(--border-medium);
  border-radius: var(--radius-md);
  padding: 12px 16px;
  color: var(--text-primary);
  font-size: 1rem;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(67, 97, 238, 0.16);
}

.form-textarea {
  min-height: 140px;
  resize: vertical;
}

.form-hint {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 6px;
}

.form-status {
  padding: var(--space-4);
  border-radius: var(--radius-md);
  margin-top: var(--space-4);
  font-size: 0.875rem;
  display: none;
}

.form-status.status-success {
  display: block;
  background-color: var(--success-bg);
  border: 1px solid var(--success-border);
  color: #065F46;
}

.form-status.status-error {
  display: block;
  background-color: var(--error-bg);
  border: 1px solid var(--error-border);
  color: #991B1B;
}

/* -----------------------------------------------------------------------------
 * 7. FOOTER
 * ----------------------------------------------------------------------------- */
.site-footer {
  background-color: #FFFFFF;
  border-top: 1px solid var(--border-subtle);
  padding-top: clamp(3rem, 6vw, 5rem);
  padding-bottom: clamp(2rem, 4vw, 3.5rem);
  margin-top: auto;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(2rem, 4vw, 3rem);
  margin-bottom: var(--space-12);
}

.footer-brand-col {
  max-width: 380px;
}

.footer-tagline {
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin-top: 12px;
  margin-bottom: 16px;
  line-height: 1.6;
}

.footer-founders-box {
  background-color: var(--bg-surface-secondary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 14px 18px;
  font-size: 0.8125rem;
}

.footer-founders-title {
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 6px;
  font-weight: 700;
  font-size: 0.6875rem;
}

.footer-founder-item {
  color: var(--text-secondary);
  margin-bottom: 4px;
}

.footer-founder-item strong {
  color: var(--text-primary);
}

.footer-nav-col {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-col-title {
  color: var(--text-primary);
  font-size: 0.8125rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 6px;
}

.footer-link {
  color: var(--text-secondary);
  font-size: 0.875rem;
  transition: color var(--transition-fast);
  text-decoration: none;
}

.footer-link:hover {
  color: var(--primary);
}

.footer-bottom {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  padding-top: var(--space-8);
  border-top: 1px solid var(--border-subtle);
  font-size: 0.8125rem;
  color: var(--text-muted);
}

.footer-copyright {
  color: var(--text-secondary);
}

.footer-privacy-statement {
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 8px;
}

/* -----------------------------------------------------------------------------
 * 8. MEDIA QUERIES (IPAD / TABLET & PC BREAKPOINTS)
 * ----------------------------------------------------------------------------- */
/* Tablet / iPad (768px to 1023px) */
@media (min-width: 768px) {
  .grid-2 {
    grid-template-columns: repeat(2, 1fr);
  }

  .grid-3 {
    grid-template-columns: repeat(2, 1fr); /* 2 columns on iPad prevents card squishing! */
  }

  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer-bottom {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
  }
}

/* Desktop (>= 1024px) */
@media (min-width: 1024px) {
  .nav-desktop {
    display: flex;
  }

  .header-cta-group {
    display: flex;
  }

  .mobile-nav-toggle {
    display: none;
  }

  .grid-3 {
    grid-template-columns: repeat(3, 1fr); /* 3 columns on full desktop */
  }

  .grid-4 {
    grid-template-columns: repeat(4, 1fr);
  }

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