/**
 * MASTER CSS - QUEENS 777 Review Website
 * Style: Minimal Black & White (Style 3)
 * Purpose: Professional review/analysis site
 * Version: 1.0
 * Date: 2025-11-25
 *
 * IMPORTANT: This CSS is UNIFIED across entire site.
 * DO NOT modify per-page. Maintain consistency.
 */

/* ============================================
   1. CSS CUSTOM PROPERTIES (DESIGN TOKENS)
   ============================================ */

:root {
  /* === PRIMARY COLORS === */
  --color-primary: #000000;
  --color-secondary: #FFFFFF;

  /* === TEXT COLORS === */
  --color-text-primary: #1a1a1a;      /* Slightly softened black */
  --color-text-secondary: #4a4a4a;    /* Medium gray */
  --color-text-tertiary: #757575;     /* Light gray */
  --color-text-inverse: #FFFFFF;      /* White text on dark backgrounds */

  /* === ACCENT COLORS (Brazilian context) === */
  --color-accent-green: #1B5E20;      /* Brazilian flag green (darker) */
  --color-accent-yellow: #F9A825;     /* Brazilian flag yellow (muted) */
  --color-accent-blue: #01579B;       /* Brazilian flag blue (darker) */

  /* === SEMANTIC COLORS === */
  --color-success: #2E7D32;           /* Dark green - approval */
  --color-warning: #F57C00;           /* Orange - caution */
  --color-danger: #C62828;            /* Dark red - critical warning */
  --color-info: #01579B;              /* Deep blue - information */

  /* === BACKGROUND COLORS === */
  --color-bg-primary: #FFFFFF;
  --color-bg-secondary: #F5F5F5;
  --color-bg-tertiary: #EEEEEE;
  --color-bg-dark: #1a1a1a;
  --color-bg-overlay: rgba(0, 0, 0, 0.7);

  /* === BORDER COLORS === */
  --color-border-light: #E0E0E0;
  --color-border-medium: #BDBDBD;
  --color-border-dark: #757575;

  /* === TYPOGRAPHY === */
  --font-heading: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-body: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-mono: 'SF Mono', Monaco, 'Cascadia Code', 'Courier New', monospace;

  /* === FONT WEIGHTS === */
  --font-weight-light: 300;
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;

  /* === FONT SIZES (8px grid system) === */
  --font-size-xs: 12px;
  --font-size-sm: 14px;
  --font-size-base: 16px;
  --font-size-lg: 18px;
  --font-size-xl: 20px;
  --font-size-2xl: 24px;
  --font-size-3xl: 30px;
  --font-size-4xl: 36px;
  --font-size-5xl: 48px;
  --font-size-6xl: 60px;

  /* === LINE HEIGHTS === */
  --line-height-tight: 1.25;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.75;
  --line-height-loose: 2;

  /* === SPACING (8px grid system) === */
  --spacing-0: 0;
  --spacing-xs: 8px;
  --spacing-sm: 16px;
  --spacing-md: 24px;
  --spacing-lg: 32px;
  --spacing-xl: 48px;
  --spacing-2xl: 64px;
  --spacing-3xl: 96px;
  --spacing-4xl: 128px;

  /* === BORDER RADIUS === */
  --radius-none: 0;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-full: 9999px;

  /* === SHADOWS === */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);

  /* === Z-INDEX SCALE === */
  --z-dropdown: 1000;
  --z-sticky: 1020;
  --z-fixed: 1030;
  --z-modal-backdrop: 1040;
  --z-modal: 1050;
  --z-popover: 1060;
  --z-tooltip: 1070;

  /* === TRANSITIONS === */
  --transition-fast: 150ms ease-in-out;
  --transition-base: 250ms ease-in-out;
  --transition-slow: 350ms ease-in-out;

  /* === BREAKPOINTS (for reference in media queries) === */
  --breakpoint-sm: 640px;
  --breakpoint-md: 768px;
  --breakpoint-lg: 1024px;
  --breakpoint-xl: 1280px;
  --breakpoint-2xl: 1536px;

  /* === MAX WIDTHS === */
  --max-width-xs: 320px;
  --max-width-sm: 640px;
  --max-width-md: 768px;
  --max-width-lg: 1024px;
  --max-width-xl: 1280px;
  --max-width-2xl: 1536px;
  --max-width-prose: 65ch;            /* Optimal reading width */
}

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

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;                    /* Base font size */
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-normal);
  line-height: var(--line-height-normal);
  color: var(--color-text-primary);
  background-color: var(--color-bg-primary);
  min-height: 100vh;
}

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

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-tight);
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-md);
}

h1 {
  font-size: var(--font-size-5xl);
  margin-bottom: var(--spacing-lg);
}

h2 {
  font-size: var(--font-size-4xl);
}

h3 {
  font-size: var(--font-size-3xl);
}

h4 {
  font-size: var(--font-size-2xl);
}

h5 {
  font-size: var(--font-size-xl);
}

h6 {
  font-size: var(--font-size-lg);
}

p {
  margin-bottom: var(--spacing-md);
  line-height: var(--line-height-relaxed);
}

a {
  color: var(--color-accent-blue);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-primary);
  text-decoration: underline;
}

a:focus-visible {
  outline: 2px solid var(--color-accent-blue);
  outline-offset: 2px;
}

strong {
  font-weight: var(--font-weight-bold);
}

em {
  font-style: italic;
}

/* === LIST STYLES === */
ul, ol {
  margin-bottom: var(--spacing-md);
  padding-left: var(--spacing-lg);
}

li {
  margin-bottom: var(--spacing-xs);
  line-height: var(--line-height-relaxed);
}

/* === CODE & PRE === */
code {
  font-family: var(--font-mono);
  font-size: 0.9em;
  background-color: var(--color-bg-secondary);
  padding: 2px 6px;
  border-radius: var(--radius-sm);
}

pre {
  font-family: var(--font-mono);
  font-size: var(--font-size-sm);
  background-color: var(--color-bg-secondary);
  padding: var(--spacing-md);
  border-radius: var(--radius-md);
  overflow-x: auto;
  margin-bottom: var(--spacing-md);
}

/* === BLOCKQUOTE === */
blockquote {
  border-left: 4px solid var(--color-border-dark);
  padding-left: var(--spacing-md);
  margin: var(--spacing-lg 0);
  font-style: italic;
  color: var(--color-text-secondary);
}

/* ============================================
   4. LAYOUT CONTAINERS
   ============================================ */

.container {
  width: 100%;
  max-width: var(--max-width-xl);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--spacing-md);
  padding-right: var(--spacing-md);
}

.container-narrow {
  max-width: var(--max-width-prose);
}

.section {
  padding-top: var(--spacing-2xl);
  padding-bottom: var(--spacing-2xl);
}

.section-lg {
  padding-top: var(--spacing-3xl);
  padding-bottom: var(--spacing-3xl);
}

/* ============================================
   5. COMPONENT STYLES
   ============================================ */

/* === BUTTONS === */
.btn {
  display: inline-block;
  font-family: var(--font-heading);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  line-height: 1;
  text-align: center;
  text-decoration: none;
  white-space: nowrap;
  vertical-align: middle;
  cursor: pointer;
  user-select: none;
  border: 2px solid transparent;
  padding: var(--spacing-sm) var(--spacing-lg);
  border-radius: var(--radius-sm);
  transition: all var(--transition-base);
}

.btn-primary {
  background-color: var(--color-primary);
  color: var(--color-text-inverse);
  border-color: var(--color-primary);
}

.btn-primary:hover {
  background-color: var(--color-text-primary);
  border-color: var(--color-text-primary);
  text-decoration: none;
}

.btn-secondary {
  background-color: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.btn-secondary:hover {
  background-color: var(--color-primary);
  color: var(--color-text-inverse);
  text-decoration: none;
}

.btn-success {
  background-color: var(--color-success);
  color: var(--color-text-inverse);
  border-color: var(--color-success);
}

.btn-warning {
  background-color: var(--color-warning);
  color: var(--color-text-inverse);
  border-color: var(--color-warning);
}

.btn-danger {
  background-color: var(--color-danger);
  color: var(--color-text-inverse);
  border-color: var(--color-danger);
}

/* === ALERT BOXES === */
.alert {
  padding: var(--spacing-md);
  border-radius: var(--radius-md);
  border-left: 4px solid;
  margin-bottom: var(--spacing-md);
}

.alert-success {
  background-color: #E8F5E9;
  border-color: var(--color-success);
  color: #1B5E20;
}

.alert-warning {
  background-color: #FFF3E0;
  border-color: var(--color-warning);
  color: #E65100;
}

.alert-danger {
  background-color: #FFEBEE;
  border-color: var(--color-danger);
  color: #B71C1C;
}

.alert-info {
  background-color: #E3F2FD;
  border-color: var(--color-info);
  color: #01579B;
}

/* === CARDS === */
.card {
  background-color: var(--color-bg-primary);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  padding: var(--spacing-lg);
  margin-bottom: var(--spacing-md);
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition-base);
}

.card:hover {
  box-shadow: var(--shadow-md);
}

.card-title {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--spacing-sm);
}

.card-body {
  color: var(--color-text-secondary);
}

/* === TABLES === */
table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: var(--spacing-lg);
  font-size: var(--font-size-sm);
}

thead {
  background-color: var(--color-bg-secondary);
}

th, td {
  padding: var(--spacing-sm);
  text-align: left;
  border-bottom: 1px solid var(--color-border-light);
}

th {
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
}

tr:hover {
  background-color: var(--color-bg-secondary);
}

/* === IMAGES === */
img {
  max-width: 100%;
  height: auto;
  display: block;
}

.img-rounded {
  border-radius: var(--radius-md);
}

figure {
  margin: var(--spacing-lg) 0;
}

figcaption {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  text-align: center;
  margin-top: var(--spacing-xs);
}

/* ============================================
   6. UTILITY CLASSES
   ============================================ */

/* === TEXT ALIGNMENT === */
.text-left { text-align: left; }
.text-center { text-align: center; }
.text-right { text-align: right; }

/* === TEXT COLORS === */
.text-primary { color: var(--color-text-primary); }
.text-secondary { color: var(--color-text-secondary); }
.text-success { color: var(--color-success); }
.text-warning { color: var(--color-warning); }
.text-danger { color: var(--color-danger); }

/* === BACKGROUND COLORS === */
.bg-primary { background-color: var(--color-bg-primary); }
.bg-secondary { background-color: var(--color-bg-secondary); }
.bg-dark { background-color: var(--color-bg-dark); color: var(--color-text-inverse); }

/* === SPACING === */
.mt-0 { margin-top: var(--spacing-0); }
.mt-xs { margin-top: var(--spacing-xs); }
.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }
.mt-xl { margin-top: var(--spacing-xl); }

.mb-0 { margin-bottom: var(--spacing-0); }
.mb-xs { margin-bottom: var(--spacing-xs); }
.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }
.mb-xl { margin-bottom: var(--spacing-xl); }

.py-0 { padding-top: var(--spacing-0); padding-bottom: var(--spacing-0); }
.py-sm { padding-top: var(--spacing-sm); padding-bottom: var(--spacing-sm); }
.py-md { padding-top: var(--spacing-md); padding-bottom: var(--spacing-md); }
.py-lg { padding-top: var(--spacing-lg); padding-bottom: var(--spacing-lg); }

.px-sm { padding-left: var(--spacing-sm); padding-right: var(--spacing-sm); }
.px-md { padding-left: var(--spacing-md); padding-right: var(--spacing-md); }
.px-lg { padding-left: var(--spacing-lg); padding-right: var(--spacing-lg); }

/* === DISPLAY === */
.block { display: block; }
.inline-block { display: inline-block; }
.flex { display: flex; }
.inline-flex { display: inline-flex; }
.grid { display: grid; }

/* === FLEX UTILITIES === */
.flex-row { flex-direction: row; }
.flex-column { flex-direction: column; }
.justify-start { justify-content: flex-start; }
.justify-center { justify-content: center; }
.justify-end { justify-content: flex-end; }
.justify-between { justify-content: space-between; }
.items-start { align-items: flex-start; }
.items-center { align-items: center; }
.items-end { align-items: flex-end; }
.gap-xs { gap: var(--spacing-xs); }
.gap-sm { gap: var(--spacing-sm); }
.gap-md { gap: var(--spacing-md); }
.gap-lg { gap: var(--spacing-lg); }

/* === VISIBILITY === */
.hidden { display: none; }
.visible { display: block; }

/* ============================================
   7. RESPONSIVE UTILITIES
   ============================================ */

@media (max-width: 767px) {
  :root {
    --font-size-5xl: 36px;
    --font-size-4xl: 30px;
    --font-size-3xl: 24px;
  }

  .container {
    padding-left: var(--spacing-sm);
    padding-right: var(--spacing-sm);
  }

  .section {
    padding-top: var(--spacing-xl);
    padding-bottom: var(--spacing-xl);
  }
}

@media (min-width: 768px) {
  .md\:hidden { display: none; }
  .md\:block { display: block; }
}

/* ============================================
   8. PRINT STYLES
   ============================================ */

@media print {
  * {
    background: transparent !important;
    color: #000 !important;
    box-shadow: none !important;
    text-shadow: none !important;
  }

  a,
  a:visited {
    text-decoration: underline;
  }

  a[href]:after {
    content: " (" attr(href) ")";
  }

  img {
    page-break-inside: avoid;
  }

  h2, h3 {
    page-break-after: avoid;
  }
}

/* ============================================
   END OF MASTER CSS
   ============================================ */

/* ============================================
   HEADER COMPONENT STYLES
   ============================================ */
/* ============================================
   HEADER STYLES
   ============================================ */

.site-header {
  background-color: var(--color-bg-primary);
  border-bottom: 1px solid var(--color-border-light);
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-base);
}

.header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-sm) 0;
  min-height: 72px;
}

/* === LOGO === */
.header-brand {
  flex-shrink: 0;
}

.logo-link {
  display: block;
  line-height: 0;
}

.logo-desktop {
  display: block;
}

.logo-mobile {
  display: none;
}

/* === MOBILE MENU TOGGLE === */
.mobile-menu-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: 2px solid var(--color-border-dark);
  border-radius: var(--radius-sm);
  padding: 0;
  cursor: pointer;
  position: relative;
  width: 48px;
  height: 48px;
  z-index: calc(var(--z-sticky) + 1);
  transition: all 0.2s ease;
}

.mobile-menu-toggle:hover {
  border-color: var(--color-primary);
  background-color: var(--color-bg-secondary);
}

.mobile-menu-toggle:active {
  background-color: var(--color-bg-tertiary);
}

.hamburger-icon {
  display: block;
  position: relative;
  width: 24px;
  height: 2px;
  background-color: var(--color-primary);
  transition: all 0.3s ease;
}

.hamburger-icon::before,
.hamburger-icon::after {
  content: '';
  display: block;
  position: absolute;
  left: 0;
  width: 24px;
  height: 2px;
  background-color: var(--color-primary);
  transition: all 0.3s ease;
}

.hamburger-icon::before {
  top: -7px;
}

.hamburger-icon::after {
  top: 7px;
}

/* Hamburger animation when active */
.mobile-menu-toggle[aria-expanded="true"] .hamburger-icon {
  background-color: transparent;
}

.mobile-menu-toggle[aria-expanded="true"] .hamburger-icon::before {
  transform: rotate(45deg);
  top: 0;
}

.mobile-menu-toggle[aria-expanded="true"] .hamburger-icon::after {
  transform: rotate(-45deg);
  top: 0;
}

/* === NAVIGATION === */
.main-navigation {
  display: flex;
  align-items: center;
}

.nav-menu {
  display: flex;
  align-items: center;
  list-style: none;
  margin: 0;
  padding: 0;
  gap: var(--spacing-xs);
}

.nav-item {
  position: relative;
}

.nav-link,
.nav-dropdown-toggle {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: var(--spacing-xs) var(--spacing-sm);
  font-family: var(--font-heading);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-primary);
  text-decoration: none;
  border: none;
  background: transparent;
  cursor: pointer;
  transition: color var(--transition-fast);
}

.nav-link:hover,
.nav-dropdown-toggle:hover {
  color: var(--color-accent-blue);
}

.dropdown-icon {
  transition: transform var(--transition-fast);
}

.nav-dropdown-toggle[aria-expanded="true"] .dropdown-icon {
  transform: rotate(180deg);
}

/* === DROPDOWN MENU === */
.nav-dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 200px;
  background-color: var(--color-bg-primary);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  padding: var(--spacing-xs) 0;
  margin-top: var(--spacing-xs);
  list-style: none;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: all var(--transition-base);
  z-index: var(--z-dropdown);
}

.nav-dropdown:hover .nav-dropdown-menu,
.nav-dropdown-toggle[aria-expanded="true"] + .nav-dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.nav-dropdown-link {
  display: block;
  padding: var(--spacing-xs) var(--spacing-md);
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: all var(--transition-fast);
}

.nav-dropdown-link:hover {
  background-color: var(--color-bg-secondary);
  color: var(--color-text-primary);
}

/* === CTA BUTTON === */
.nav-cta {
  margin-left: var(--spacing-sm);
}

.nav-cta .btn {
  font-size: var(--font-size-sm);
  padding: var(--spacing-xs) var(--spacing-md);
}

/* ============================================
   RESPONSIVE (MOBILE)
   ============================================ */

@media (max-width: 1023px) {
  /* Show mobile toggle */
  .mobile-menu-toggle {
    display: flex !important;
  }

  /* Show mobile logo */
  .logo-desktop {
    display: none;
  }

  .logo-mobile {
    display: block;
    max-width: 53px;
    height: auto;
  }

  /* Mobile navigation */
  .main-navigation {
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--color-bg-primary);
    padding: var(--spacing-lg);
    overflow-y: auto;
    transform: translateX(-100%);
    transition: transform var(--transition-base);
    z-index: calc(var(--z-sticky) - 1);
  }

  .main-navigation.is-open {
    transform: translateX(0);
  }

  .nav-menu {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }

  .nav-link,
  .nav-dropdown-toggle {
    width: 100%;
    justify-content: space-between;
    padding: var(--spacing-md);
    border-bottom: 1px solid var(--color-border-light);
  }

  /* Dropdown menu mobile */
  .nav-dropdown-menu {
    position: static;
    box-shadow: none;
    border: none;
    border-top: 1px solid var(--color-border-light);
    border-radius: 0;
    margin: 0;
    padding: 0;
    max-height: 0;
    overflow: hidden;
    opacity: 1;
    visibility: visible;
    transform: none;
    transition: max-height var(--transition-base);
  }

  .nav-dropdown-toggle[aria-expanded="true"] + .nav-dropdown-menu {
    max-height: 500px;
  }

  .nav-dropdown-link {
    padding: var(--spacing-sm) var(--spacing-lg);
    background-color: var(--color-bg-secondary);
  }

  /* CTA button mobile */
  .nav-cta {
    margin-left: 0;
    margin-top: var(--spacing-md);
  }

  .nav-cta .btn {
    width: 100%;
    text-align: center;
  }
}

/* ============================================
   ACCESSIBILITY
   ============================================ */

.nav-link:focus-visible,
.nav-dropdown-toggle:focus-visible,
.nav-dropdown-link:focus-visible,
.mobile-menu-toggle:focus-visible {
  outline: 2px solid var(--color-accent-blue);
  outline-offset: 2px;
}

/* Skip to content link (for screen readers) */
.skip-to-content {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--color-primary);
  color: var(--color-text-inverse);
  padding: var(--spacing-xs) var(--spacing-sm);
  z-index: 100;
}

.skip-to-content:focus {
  top: 0;
}


/* ============================================
   MOBILE NAVIGATION & HAMBURGER MENU
   ============================================ */

/* Site Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1020;
  background-color: var(--color-bg-primary);
  border-bottom: 1px solid var(--color-border-light);
  box-shadow: var(--shadow-sm);
}

.header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-sm) 0;
}

.header-brand {
  display: flex;
  align-items: center;
  z-index: 1022;
}

.logo-link {
  display: block;
  line-height: 0;
}

.logo-desktop {
  display: block;
  height: auto;
}

.logo-mobile {
  display: none;
}

/* Mobile Menu Toggle Button */
.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 48px;
  height: 48px;
  padding: 0;
  background: transparent;
  border: 2px solid var(--color-border-dark);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
  position: relative;
  z-index: 1021;
}

.mobile-menu-toggle:hover {
  border-color: var(--color-primary);
  background-color: var(--color-bg-secondary);
}

.mobile-menu-toggle:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

.mobile-menu-toggle:active {
  background-color: var(--color-bg-tertiary);
}

/* Hamburger Icon (Three Lines) */
.hamburger-icon {
  display: block;
  position: relative;
  width: 24px;
  height: 2px;
  background-color: var(--color-primary);
  pointer-events: none;
  transition: all 0.3s ease;
  margin: 0;
}

.hamburger-icon::before,
.hamburger-icon::after {
  content: '';
  position: absolute;
  left: 0;
  width: 24px;
  height: 2px;
  background-color: var(--color-primary);
  transition: all 0.3s ease;
}

.hamburger-icon::before {
  top: -7px;
}

.hamburger-icon::after {
  top: 7px;
}

/* Hamburger Animation when menu is open */
.mobile-menu-toggle[aria-expanded="true"] .hamburger-icon {
  background-color: transparent;
}

.mobile-menu-toggle[aria-expanded="true"] .hamburger-icon::before {
  top: 0;
  transform: rotate(45deg);
}

.mobile-menu-toggle[aria-expanded="true"] .hamburger-icon::after {
  top: 0;
  transform: rotate(-45deg);
}

/* Main Navigation */
.main-navigation {
  display: flex;
  align-items: center;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: var(--spacing-lg);
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-item {
  position: relative;
}

.nav-link {
  display: block;
  padding: var(--spacing-xs) var(--spacing-sm);
  color: var(--color-text-primary);
  text-decoration: none;
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
  transition: color var(--transition-fast);
}

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

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

  .nav-dropdown-toggle[aria-expanded="true"] + .nav-dropdown-menu {
    display: block;
  }

  .nav-dropdown-link {
    display: block;
    padding: var(--spacing-sm) var(--spacing-lg);
    color: var(--color-text-secondary);
    text-decoration: none;
    font-size: var(--font-size-base);
    transition: all var(--transition-fast);
  }

  .nav-dropdown-link:hover {
    background-color: var(--color-bg-tertiary);
    color: var(--color-primary);
    padding-left: calc(var(--spacing-lg) + 8px);
  }
}

/* Desktop Styles (≥1024px) */
@media (min-width: 1024px) {
  .mobile-menu-toggle {
    display: none !important;
  }

  .main-navigation {
    display: flex !important;
    position: static !important;
    transform: none !important;
    background: transparent !important;
    padding: 0 !important;
    box-shadow: none !important;
  }

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

  .nav-dropdown-toggle {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    background: transparent;
    border: none;
    cursor: pointer;
  }

  .dropdown-icon {
    transition: transform var(--transition-fast);
  }

  .nav-dropdown:hover .dropdown-icon,
  .nav-dropdown-toggle[aria-expanded="true"] .dropdown-icon {
    transform: rotate(180deg);
  }

  .nav-dropdown-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 220px;
    background-color: var(--color-bg-primary);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    list-style: none;
    padding: var(--spacing-xs) 0;
    margin: var(--spacing-xs) 0 0 0;
    z-index: 1000;
  }

  .nav-dropdown:hover .nav-dropdown-menu,
  .nav-dropdown-toggle[aria-expanded="true"] + .nav-dropdown-menu {
    display: block;
  }

  .nav-dropdown-link {
    display: block;
    padding: var(--spacing-sm) var(--spacing-md);
    color: var(--color-text-primary);
    text-decoration: none;
    font-size: var(--font-size-sm);
    transition: all var(--transition-fast);
    white-space: nowrap;
  }

  .nav-dropdown-link:hover {
    background-color: var(--color-bg-secondary);
    color: var(--color-primary);
  }
}

/* Prevent body scroll when mobile menu is open */
body.menu-open {
  overflow: hidden;
}