/* ============================================================
   Guidalux – Design System (style.css)
   ============================================================
   Global design tokens, typography scale, base element styles,
   and foundational layout for a premium editorial brand.
   ============================================================ */


/* ==========================================================
   1. DESIGN TOKENS
   ========================================================== */

:root {

  /* --- Brand Colors --- */
  --pk-primary:          #111827;
  --pk-secondary:        #1F2937;
  --pk-accent:           #F97316;
  --pk-accent-hover:     #EA580C;
  --pk-accent-light:     #FFF7ED;
  --pk-accent-subtle:    #FDBA74;

  /* --- Backgrounds --- */
  --pk-bg:               #FFFFFF;
  --pk-bg-soft:          #F8FAFC;
  --pk-bg-muted:         #F1F5F9;
  --pk-bg-dark:          #111827;
  --pk-bg-dark-soft:     #1F2937;

  /* --- Text --- */
  --pk-text:             #111827;
  --pk-text-secondary:   #374151;
  --pk-text-muted:       #6B7280;
  --pk-text-light:       #9CA3AF;
  --pk-text-on-dark:     #F9FAFB;
  --pk-text-on-accent:   #FFFFFF;

  /* --- Borders --- */
  --pk-border:           #E5E7EB;
  --pk-border-light:     #F3F4F6;
  --pk-border-dark:      #D1D5DB;

  /* --- Semantic --- */
  --pk-success:          #16A34A;
  --pk-success-light:    #F0FDF4;
  --pk-warning:          #EAB308;
  --pk-warning-light:    #FEFCE8;
  --pk-danger:           #DC2626;
  --pk-danger-light:     #FEF2F2;
  --pk-info:             #2563EB;
  --pk-info-light:       #EFF6FF;

  /* --- Star Rating --- */
  --pk-star-filled:      #F59E0B;
  --pk-star-empty:       #D1D5DB;

  /* --- Typography --- */
  --pk-font-heading:     'Manrope', sans-serif;
  --pk-font-body:        'Inter', sans-serif;

  --pk-text-xs:          0.75rem;     /* 12px */
  --pk-text-sm:          0.8125rem;   /* 13px */
  --pk-text-base:        0.9375rem;   /* 15px */
  --pk-text-md:          1rem;        /* 16px */
  --pk-text-lg:          1.125rem;    /* 18px */
  --pk-text-xl:          1.25rem;     /* 20px */

  --pk-h1:               2.25rem;     /* 36px */
  --pk-h2:               1.75rem;     /* 28px */
  --pk-h3:               1.375rem;    /* 22px */
  --pk-h4:               1.125rem;    /* 18px */
  --pk-h5:               1rem;        /* 16px */
  --pk-h6:               0.875rem;    /* 14px */

  --pk-line-height:      1.7;
  --pk-line-height-tight: 1.3;
  --pk-line-height-heading: 1.25;

  --pk-letter-spacing-tight: -0.025em;
  --pk-letter-spacing-wide:  0.05em;

  /* --- Font Weights --- */
  --pk-weight-normal:    400;
  --pk-weight-medium:    500;
  --pk-weight-semibold:  600;
  --pk-weight-bold:      700;
  --pk-weight-extrabold: 800;

  /* --- Spacing --- */
  --pk-space-1:          0.25rem;   /* 4px  */
  --pk-space-2:          0.5rem;    /* 8px  */
  --pk-space-3:          0.75rem;   /* 12px */
  --pk-space-4:          1rem;      /* 16px */
  --pk-space-5:          1.25rem;   /* 20px */
  --pk-space-6:          1.5rem;    /* 24px */
  --pk-space-8:          2rem;      /* 32px */
  --pk-space-10:         2.5rem;    /* 40px */
  --pk-space-12:         3rem;      /* 48px */
  --pk-space-16:         4rem;      /* 64px */
  --pk-space-20:         5rem;      /* 80px */
  --pk-space-24:         6rem;      /* 96px */

  /* --- Border Radius --- */
  --pk-radius-sm:        0.375rem;  /* 6px  */
  --pk-radius-md:        0.5rem;    /* 8px  */
  --pk-radius-lg:        0.75rem;   /* 12px */
  --pk-radius-xl:        1rem;      /* 16px */
  --pk-radius-2xl:       1.5rem;    /* 24px */
  --pk-radius-full:      9999px;

  /* --- Shadows --- */
  --pk-shadow-xs:        0 1px 2px rgba(0, 0, 0, 0.04);
  --pk-shadow-sm:        0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
  --pk-shadow-md:        0 4px 6px -1px rgba(0, 0, 0, 0.06), 0 2px 4px -2px rgba(0, 0, 0, 0.04);
  --pk-shadow-lg:        0 10px 15px -3px rgba(0, 0, 0, 0.06), 0 4px 6px -4px rgba(0, 0, 0, 0.04);
  --pk-shadow-xl:        0 20px 25px -5px rgba(0, 0, 0, 0.06), 0 8px 10px -6px rgba(0, 0, 0, 0.04);
  --pk-shadow-card:      0 1px 3px rgba(0, 0, 0, 0.04), 0 1px 2px rgba(0, 0, 0, 0.02);
  --pk-shadow-card-hover: 0 10px 30px rgba(0, 0, 0, 0.08);

  /* --- Transitions --- */
  --pk-transition-fast:    150ms ease;
  --pk-transition:         200ms ease;
  --pk-transition-slow:    300ms ease;
  --pk-transition-spring:  300ms cubic-bezier(0.34, 1.56, 0.64, 1);

  /* --- Z-Index Scale --- */
  --pk-z-dropdown:   1000;
  --pk-z-sticky:     1020;
  --pk-z-fixed:      1030;
  --pk-z-overlay:    1040;
  --pk-z-modal:      1050;
  --pk-z-toast:      1090;

  /* --- Container Max Widths --- */
  --pk-container-sm:   640px;
  --pk-container-md:   768px;
  --pk-container-lg:   1024px;
  --pk-container-xl:   1200px;
  --pk-container-2xl:  1400px;
}


/* ==========================================================
   2. RESET & BASE
   ========================================================== */

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  margin: 0;
  font-family: var(--pk-font-body);
  font-size: var(--pk-text-base);
  font-weight: var(--pk-weight-normal);
  line-height: var(--pk-line-height);
  color: var(--pk-text);
  background-color: var(--pk-bg);
}

::selection {
  background-color: var(--pk-accent);
  color: var(--pk-text-on-accent);
}

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

figure {
  margin: 0;
}

hr {
  border: none;
  border-top: 1px solid var(--pk-border);
  margin: var(--pk-space-8) 0;
}


/* ==========================================================
   3. TYPOGRAPHY
   ========================================================== */

/* --- Headings --- */

h1, h2, h3, h4, h5, h6,
.h1, .h2, .h3, .h4, .h5, .h6 {
  font-family: var(--pk-font-heading);
  font-weight: var(--pk-weight-bold);
  line-height: var(--pk-line-height-heading);
  letter-spacing: var(--pk-letter-spacing-tight);
  color: var(--pk-primary);
  margin-top: 0;
  margin-bottom: var(--pk-space-4);
}

h1, .h1 {
  font-size: var(--pk-h1);
  font-weight: var(--pk-weight-extrabold);
  letter-spacing: -0.03em;
}

h2, .h2 {
  font-size: var(--pk-h2);
  font-weight: var(--pk-weight-bold);
}

h3, .h3 {
  font-size: var(--pk-h3);
  font-weight: var(--pk-weight-semibold);
}

h4, .h4 {
  font-size: var(--pk-h4);
  font-weight: var(--pk-weight-semibold);
}

h5, .h5 {
  font-size: var(--pk-h5);
  font-weight: var(--pk-weight-semibold);
}

h6, .h6 {
  font-size: var(--pk-h6);
  font-weight: var(--pk-weight-semibold);
  text-transform: uppercase;
  letter-spacing: var(--pk-letter-spacing-wide);
  color: var(--pk-text-muted);
}

/* --- Body Text --- */

p {
  margin-top: 0;
  margin-bottom: var(--pk-space-4);
  color: var(--pk-text-secondary);
}

.lead {
  font-size: var(--pk-text-lg);
  line-height: 1.6;
  color: var(--pk-text-muted);
  font-weight: var(--pk-weight-normal);
}

small, .text-sm {
  font-size: var(--pk-text-sm);
}

.text-xs {
  font-size: var(--pk-text-xs);
}

.text-lg {
  font-size: var(--pk-text-lg);
}

/* --- Labels --- */

.label {
  font-family: var(--pk-font-heading);
  font-size: var(--pk-text-xs);
  font-weight: var(--pk-weight-semibold);
  text-transform: uppercase;
  letter-spacing: var(--pk-letter-spacing-wide);
  color: var(--pk-text-muted);
}

/* --- Metadata --- */

.meta,
.article-meta {
  font-size: var(--pk-text-sm);
  color: var(--pk-text-muted);
  font-weight: var(--pk-weight-normal);
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--pk-space-1);
}

.meta span + span::before,
.meta time::before,
.article-meta span + span::before,
.article-meta time::before {
  content: '·';
  margin: 0 var(--pk-space-2);
  color: var(--pk-text-light);
}

/* --- Captions --- */

.caption,
figcaption {
  font-size: var(--pk-text-sm);
  color: var(--pk-text-muted);
  margin-top: var(--pk-space-2);
  line-height: 1.5;
}

/* --- Links --- */

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

a:hover {
  color: var(--pk-accent);
}

a:focus-visible {
  outline: 2px solid var(--pk-accent);
  outline-offset: 2px;
  border-radius: var(--pk-radius-sm);
}

/* --- Lists --- */

ul, ol {
  padding-left: var(--pk-space-6);
  margin-bottom: var(--pk-space-4);
}

li {
  margin-bottom: var(--pk-space-2);
  color: var(--pk-text-secondary);
}

/* --- Blockquote --- */

blockquote {
  margin: var(--pk-space-8) 0;
  padding: var(--pk-space-6) var(--pk-space-8);
  border-left: 3px solid var(--pk-accent);
  background: var(--pk-bg-soft);
  border-radius: 0 var(--pk-radius-md) var(--pk-radius-md) 0;
  font-size: var(--pk-text-lg);
  color: var(--pk-text-secondary);
  font-style: italic;
}

blockquote p:last-child {
  margin-bottom: 0;
}


/* ==========================================================
   4. HEADER / NAVIGATION
   ========================================================== */

#site-header {
  background: rgba(255, 255, 255, 0.96);
  border-bottom: 1px solid var(--pk-border);
  position: sticky;
  top: 0;
  z-index: var(--pk-z-sticky);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

#main-nav {
  padding: 1.125rem 0 !important;
  min-height: 76px;
  display: flex;
  align-items: center;
}

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

/* --- Brand Logo --- */
#main-nav .navbar-brand,
#main-nav .brand-logo {
  display: inline-flex !important;
  align-items: center !important;
  padding: 0 !important;
  margin: 0 !important;
  height: 40px;
  line-height: 1 !important;
  text-decoration: none;
}

.brand-name {
  font-family: var(--pk-font-heading);
  font-weight: var(--pk-weight-extrabold);
  font-size: 1.55rem;
  color: var(--pk-primary);
  letter-spacing: var(--pk-letter-spacing-tight);
  transition: opacity var(--pk-transition);
  display: inline-flex;
  align-items: center;
  line-height: 1;
  margin: 0;
  padding: 0;
}

.brand-name:hover {
  opacity: 0.9;
}

.brand-name .brand-accent,
.brand-accent {
  color: var(--pk-accent) !important;
}

.footer-brand-name,
#site-footer .brand-name,
#site-footer .brand-logo {
  color: #ffffff !important;
}

#site-footer .brand-accent {
  color: var(--pk-accent) !important;
}

/* --- Collapsible Navigation --- */
#main-nav .navbar-collapse {
  display: flex !important;
  align-items: center !important;
  height: 100%;
}

#main-nav .navbar-nav {
  display: flex !important;
  align-items: center !important;
  flex-direction: row;
  flex-wrap: nowrap;
  gap: 2px;
  margin: 0 auto !important;
  padding: 0 1.75rem !important;
  height: 100%;
}

#main-nav .nav-item {
  display: inline-flex !important;
  align-items: center !important;
  margin: 0;
  padding: 0;
  height: 100%;
}

/* --- Nav Links (Strict Single-Line No-Wrap & Compact Spacing) --- */
#main-nav .nav-link {
  font-family: var(--pk-font-body);
  font-size: 0.8125rem;
  font-weight: var(--pk-weight-medium);
  color: var(--pk-text-secondary);
  padding: 6px 10px;
  border-radius: var(--pk-radius-full);
  transition: all var(--pk-transition);
  letter-spacing: 0.01em;
  white-space: nowrap !important;
  display: inline-flex !important;
  align-items: center !important;
  justify-content: center !important;
  line-height: 1 !important;
  height: 36px;
  text-decoration: none !important;
  box-sizing: border-box;
}

#main-nav .nav-link:hover {
  color: var(--pk-primary);
  background-color: var(--pk-bg-soft);
}

#main-nav .nav-link.active {
  color: var(--pk-primary);
  font-weight: var(--pk-weight-semibold);
  background-color: var(--pk-bg-muted);
}

/* --- Header Actions --- */
#nav-actions {
  display: inline-flex !important;
  align-items: center !important;
  gap: 10px;
  margin: 0 !important;
  padding: 0 !important;
  height: 40px;
}

.header-search-wrapper {
  position: relative;
  width: 195px;
  height: 38px;
  display: flex;
  align-items: center;
  transition: width var(--pk-transition);
}

.header-search-wrapper .form-control {
  height: 38px;
  border: 1px solid var(--pk-border);
  border-radius: var(--pk-radius-full);
  font-size: var(--pk-text-xs);
  padding: 0 36px 0 14px;
  background: var(--pk-bg-soft);
  color: var(--pk-text);
  transition: border-color var(--pk-transition), box-shadow var(--pk-transition), width var(--pk-transition);
  line-height: 38px;
}

.header-search-wrapper .form-control:focus {
  border-color: var(--pk-accent);
  box-shadow: 0 0 0 3px rgba(249, 115, 22, 0.12);
  background: var(--pk-bg);
}

.search-submit-btn {
  position: absolute;
  right: 4px;
  top: 50%;
  transform: translateY(-50%);
  padding: 4px 8px;
  color: var(--pk-text-muted);
  border: none;
  background: transparent;
  display: flex;
  align-items: center;
  justify-content: center;
}

.search-submit-btn:hover {
  color: var(--pk-accent);
}

/* --- Mobile Offcanvas & Responsive Collapse --- */
@media (max-width: 1199.98px) {
  #main-nav {
    padding: 0.75rem 0 !important;
    min-height: 64px;
  }

  #main-nav .navbar-collapse {
    height: auto !important;
  }

  #main-nav .navbar-nav {
    flex-direction: column !important;
    align-items: stretch !important;
    gap: 4px;
    padding-top: var(--pk-space-3);
    padding-bottom: var(--pk-space-2);
  }

  #main-nav .nav-link {
    padding: 10px 16px !important;
    border-radius: var(--pk-radius-lg);
    font-size: var(--pk-text-base);
    height: 44px !important;
    justify-content: flex-start !important;
  }

  .header-search-wrapper {
    width: 100% !important;
  }

  #nav-actions {
    flex-direction: column !important;
    align-items: stretch !important;
    gap: var(--pk-space-2) !important;
    padding-top: var(--pk-space-3);
    border-top: 1px solid var(--pk-border-light);
    height: auto !important;
  }
}

/* --- Mobile Toggle --- */

.navbar-toggler {
  border: 1px solid var(--pk-border);
  border-radius: var(--pk-radius-md);
  padding: var(--pk-space-2) var(--pk-space-3);
  transition: border-color var(--pk-transition);
}

.navbar-toggler:focus {
  box-shadow: 0 0 0 3px rgba(249, 115, 22, 0.15);
  border-color: var(--pk-accent);
}


/* ==========================================================
   5. MAIN CONTENT
   ========================================================== */

#main-content {
  min-height: 60vh;
}

/* Section spacing */
section {
  position: relative;
}

/* Section headings */
section > .container > h2 {
  font-size: var(--pk-h2);
  margin-bottom: var(--pk-space-8);
  position: relative;
}

/* Soft background sections */
.section-soft {
  background-color: var(--pk-bg-soft);
}


/* ==========================================================
   6. FOOTER
   ========================================================== */

#site-footer {
  background-color: var(--pk-bg-dark);
  color: var(--pk-text-light);
  padding: var(--pk-space-16) 0 var(--pk-space-8);
  margin-top: var(--pk-space-16);
}

#site-footer h5 {
  color: var(--pk-text-on-dark);
  font-family: var(--pk-font-heading);
  font-size: var(--pk-text-sm);
  font-weight: var(--pk-weight-semibold);
  text-transform: uppercase;
  letter-spacing: var(--pk-letter-spacing-wide);
  margin-bottom: var(--pk-space-5);
}

#site-footer p {
  color: var(--pk-text-light);
  font-size: var(--pk-text-sm);
  line-height: 1.7;
}

#site-footer a {
  color: var(--pk-text-light);
  font-size: var(--pk-text-sm);
  transition: color var(--pk-transition);
  display: inline-block;
  padding: var(--pk-space-1) 0;
}

#site-footer a:hover {
  color: var(--pk-bg);
}

#site-footer hr {
  border-color: rgba(255, 255, 255, 0.1);
  margin: var(--pk-space-10) 0 var(--pk-space-6);
}

#site-footer .list-unstyled li {
  margin-bottom: var(--pk-space-2);
}

/* Footer social icons */
#footer-social a {
  font-size: var(--pk-text-lg);
  color: var(--pk-text-light);
  transition: color var(--pk-transition), transform var(--pk-transition);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--pk-radius-full);
}

#footer-social a:hover {
  color: var(--pk-accent);
  transform: translateY(-2px);
}

/* Footer bottom bar */
#site-footer .mb-0 {
  font-size: var(--pk-text-sm);
  color: var(--pk-text-light);
}


/* ==========================================================
   7. BREADCRUMBS (override Bootstrap)
   ========================================================== */

.breadcrumb {
  background: transparent;
  padding: 0;
  margin-bottom: var(--pk-space-4);
  font-size: var(--pk-text-sm);
}

.breadcrumb-item a {
  color: var(--pk-text-muted);
  transition: color var(--pk-transition);
}

.breadcrumb-item a:hover {
  color: var(--pk-accent);
}

.breadcrumb-item.active {
  color: var(--pk-text-light);
}

.breadcrumb-item + .breadcrumb-item::before {
  color: var(--pk-text-light);
  content: "›";
}


/* ==========================================================
   8. UTILITY CLASSES
   ========================================================== */

/* Text utilities */
.text-primary   { color: var(--pk-primary) !important; }
.text-accent    { color: var(--pk-accent) !important; }
.text-muted     { color: var(--pk-text-muted) !important; }
.text-success   { color: var(--pk-success) !important; }
.text-danger    { color: var(--pk-danger) !important; }

/* Background utilities */
.bg-soft        { background-color: var(--pk-bg-soft) !important; }
.bg-muted       { background-color: var(--pk-bg-muted) !important; }
.bg-dark        { background-color: var(--pk-bg-dark) !important; }
.bg-accent      { background-color: var(--pk-accent) !important; color: #ffffff !important; }
.bg-accent-light { background-color: var(--pk-accent-light) !important; }
.border-accent  { border-color: var(--pk-accent) !important; }

/* Spacing */
.section-padding {
  padding-top: var(--pk-space-16);
  padding-bottom: var(--pk-space-16);
}

.section-padding-sm {
  padding-top: var(--pk-space-10);
  padding-bottom: var(--pk-space-10);
}

/* Divider */
.divider {
  border: none;
  border-top: 1px solid var(--pk-border);
  margin: var(--pk-space-10) 0;
}

/* Truncate */
.truncate-2 {
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.truncate-3 {
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* Aspect ratios for images */
.aspect-4-3 {
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.aspect-16-9 {
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.aspect-1-1 {
  aspect-ratio: 1 / 1;
  object-fit: cover;
}

/* Accessible hidden text */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Focus visible for keyboard navigation */
:focus-visible {
  outline: 2px solid var(--pk-accent);
  outline-offset: 2px;
}


/* ==========================================================
   9. UX POLISH & MICRO-INTERACTIONS
   ========================================================== */

/* --- Reading Progress Indicator (Fixed Top) --- */
#reading-progress-bar {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  background: var(--pk-accent);
  z-index: calc(var(--pk-z-fixed) + 10);
  width: 0%;
  transition: width 0.1s linear;
}

/* --- Floating Back-to-Top Button --- */
#back-to-top {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 44px;
  height: 44px;
  border-radius: var(--pk-radius-full);
  background: var(--pk-primary);
  color: #ffffff;
  border: 1px solid rgba(255, 255, 255, 0.15);
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.18);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.125rem;
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: opacity 0.25s ease, transform 0.25s ease, background 0.2s ease;
  z-index: var(--pk-z-fixed);
  cursor: pointer;
}

#back-to-top.is-visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

#back-to-top:hover {
  background: var(--pk-accent);
  color: #ffffff;
  transform: translateY(-2px);
  box-shadow: 0 6px 18px rgba(249, 115, 22, 0.35);
}

#back-to-top:focus-visible {
  outline: 2px solid var(--pk-accent);
  outline-offset: 2px;
}

/* --- Scroll Reveal Animations (Lightweight IntersectionObserver) --- */
.reveal-on-scroll {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.5s cubic-bezier(0.16, 1, 0.3, 1), transform 0.5s cubic-bezier(0.16, 1, 0.3, 1);
  will-change: opacity, transform;
}

.reveal-on-scroll.is-revealed {
  opacity: 1;
  transform: translateY(0);
}

/* --- Card Hover Lift & Micro-Zoom Effects --- */
.product-card,
.article-card,
.deal-card,
.category-card {
  transition: transform var(--pk-transition-slow), box-shadow var(--pk-transition-slow), border-color var(--pk-transition);
}

.product-card:hover,
.article-card:hover,
.deal-card:hover,
.category-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--pk-shadow-card-hover);
}

.card .card-img-top,
.card .article-img-wrapper img,
.card .deal-img-wrapper img,
.card .product-img-wrapper img {
  transition: transform 0.35s ease;
}

.card:hover .card-img-top,
.card:hover .article-img-wrapper img,
.card:hover .deal-img-wrapper img,
.card:hover .product-img-wrapper img {
  transform: scale(1.04);
}

/* --- Button Micro-Interactions --- */
.btn {
  transition: all var(--pk-transition);
}

.btn:active {
  transform: scale(0.98);
}

.btn-accent:hover {
  box-shadow: 0 4px 12px rgba(249, 115, 22, 0.28);
}

/* --- Scrolled Sticky Header Elevation --- */
#site-header.scrolled {
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
  background: rgba(255, 255, 255, 0.98);
  border-bottom-color: var(--pk-border-dark);
}

/* --- Mobile Offcanvas & Collapse Transitions --- */
.navbar-collapse {
  transition: height 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}


/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}