/* ============================================
   PercentagePro - Layout Styles
   Header, Footer, Navigation
   ============================================ */

/* ============================================
   HEADER & NAVIGATION
   ============================================ */

.skip-link {
    position: absolute;
    top: -100%;
    left: var(--space-4);
    z-index: 10000;
    padding: var(--space-3) var(--space-4);
    background: var(--color-primary);
    color: #ffffff;
    font-weight: 600;
    text-decoration: none;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
}

.skip-link:focus {
    top: var(--space-4);
    outline: 2px solid var(--color-action);
    outline-offset: 2px;
}

.site-header {
    background: #ffffff;
    border-top: 3px solid var(--color-action);
    box-shadow: 0 1px 0 var(--color-gray-200);
    position: sticky;
    top: 0;
    z-index: var(--z-sticky);
    border-bottom: 1px solid var(--color-gray-200);
}

.header-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-4) var(--container-padding);
    max-width: var(--container-max-width);
    margin: 0 auto;
    gap: var(--space-8);
    min-height: 5.25rem;
    box-sizing: border-box;
}

/* Mobile: Reduce header padding to save vertical space */
@media (max-width: 480px) {
    .header-container {
        padding: var(--space-2) var(--container-padding);
        gap: var(--space-4);
    }
}

.header-actions {
    display: flex;
    align-items: center;
    gap: var(--space-4);
}

.search-toggle {
    background: var(--color-gray-100);
    border: 1px solid var(--color-gray-200);
    width: 38px;
    height: 38px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-base);
    font-size: 1rem;
    color: var(--color-gray-600);
    padding: 0;
}

.search-toggle:hover {
    background: var(--color-primary);
    color: white;
    border-color: var(--color-primary);
}

[data-theme="dark"] .sidebar-widget h3 {
    color: #f8fafc;
    border-bottom: 2px solid #334155;
}

[data-theme="dark"] .calculator-link {
    color: #cbd5e1;
}

[data-theme="dark"] .calculator-link:hover {
    color: #60a5fa;
    background: #1e293b;
}

[data-theme="dark"] .search-toggle {
    background: #1e293b;
    color: #cbd5e1;
}

[data-theme="dark"] .search-toggle:hover {
    background: var(--color-primary);
    color: white;
}

/* Logo/Brand - Enhanced Design */
.site-logo {
    display: flex;
    align-items: center;
    text-decoration: none;
    transition: transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.site-logo:hover {
    transform: scale(1.08) rotate(-1deg);
}

.logo-img {
    height: 52px;
    width: auto;
    display: block;
    object-fit: contain;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.15));
}

[data-theme="dark"] .logo-img {
    filter: drop-shadow(0 0 8px rgba(255, 255, 255, 0.2)) brightness(1.2);
    /* mix-blend-mode: screen removed to rely on clean transparent PNG */
}

/* Theme-specific visibility */
.logo-light {
    display: block !important;
}

.logo-dark {
    display: none !important;
}

[data-theme="dark"] .logo-light {
    display: none !important;
}

[data-theme="dark"] .logo-dark {
    display: block !important;
}

@media (max-width: 767px) {
    .footer-grid {
        gap: var(--space-8);
    }
}

@media (max-width: 767px) {
    .mobile-nav {
        height: 50px;
    }
}

@media (max-width: 767px) {
    .logo-img {
        height: 50px;
    }
}

.logo-icon {
    font-size: 2.5rem;
    color: var(--color-primary);
    font-weight: var(--font-bold);
    display: inline-flex;
    align-items: center;
    margin-top: 2px;
}

.logo-text {
    display: flex;
    flex-direction: column;
    line-height: 1.2;
}

.logo-brand {
    font-family: 'Poppins', sans-serif;
    font-size: clamp(0.875rem, 2.5vw, 1.125rem);
    font-weight: 700;
    color: var(--color-primary);
    letter-spacing: -0.5px;
}

.logo-tagline {
    font-size: var(--text-xs);
    font-weight: var(--font-medium);
    color: var(--color-gray-600);
    letter-spacing: 0.5px;
    text-transform: uppercase;
}

@media (max-width: 767px) {
    .logo-tagline {
        display: none;
    }

    .logo-brand {
        font-size: 0.875rem;
    }

    .logo-icon {
        font-size: 2rem;
    }
}

/* Main Navigation */
.main-nav {
    display: none;
}

.nav-list {
    display: flex;
    list-style: none;
    margin: 0;
    gap: var(--space-2);
    align-items: center;
}

.nav-item {
    margin: 0;
}

.nav-link {
    display: block;
    padding: var(--space-2) var(--space-5);
    color: var(--color-gray-700);
    font-weight: 600;
    border-radius: 99px;
    transition: all var(--transition-base);
    font-size: 0.95rem;
}

[data-theme="dark"] .nav-link {
    color: #cbd5e1;
}

[data-theme="dark"] .nav-link:hover,
[data-theme="dark"] .nav-link.active {
    color: #60a5fa;
    background: rgba(255, 255, 255, 0.05);
}

.nav-link:hover {
    background: rgba(37, 99, 235, 0.08);
    color: var(--color-primary);
    text-decoration: none;
}

.nav-link.active {
    background: var(--color-primary);
    color: white;
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.2);
}

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

/* Invisible hover bridge to prevent flickering when moving to dropdown */
.nav-dropdown::after {
    content: '';
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    height: 16px;
    /* Bridge the gap between trigger and dropdown */
    background: transparent;
}

.dropdown-toggle {
    display: flex;
    align-items: center;
    gap: var(--space-1);
    cursor: pointer;
}

.dropdown-toggle::after {
    content: '\25be';
    font-size: 0.8em;
    margin-left: 4px;
    transition: transform var(--transition-base);
}

.nav-dropdown:hover .dropdown-toggle::after {
    transform: rotate(180deg);
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 250px;
    background: white;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    margin-top: var(--space-2);
    padding: var(--space-2);
    display: none;
    z-index: var(--z-dropdown);
}

.nav-dropdown:hover .dropdown-menu:not(.mega-menu),
.nav-dropdown.is-open .dropdown-menu:not(.mega-menu) {
    display: block;
    animation: slideDown var(--transition-base);
}

.nav-dropdown:hover .dropdown-menu.mega-menu,
.nav-dropdown.is-open .dropdown-menu.mega-menu {
    display: block;
    animation: megaMenuFadeIn 0.22s ease;
}

@keyframes megaMenuFadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

.dropdown-item {
    display: block;
    padding: var(--space-3) var(--space-4);
    color: var(--color-gray-700);
    border-radius: var(--radius-sm);
    transition: background-color var(--transition-fast);
}

.dropdown-item:hover {
    background: var(--color-gray-100);
    color: var(--color-primary);
    text-decoration: none;
}

/* ============================================
   MEGA MENU STYLES (Desktop Only)
   ============================================ */

/* Mega Menu Container - Desktop */
@media (min-width: 900px) {
    .header-container {
        position: relative;
    }

    .main-nav .nav-dropdown:has(.mega-menu) {
        position: static;
    }

    .dropdown-menu.mega-menu:has(.mega-menu-inner) {
        position: absolute;
        left: 50%;
        right: auto;
        top: 100%;
        transform: translateX(-50%);
        width: min(var(--container-max-width, 1280px), calc(100vw - 2rem));
        min-width: 0;
        max-width: calc(100vw - 2rem);
        padding: 0;
        margin-top: 0;
        border-radius: 18px;
    }

    .dropdown-menu.mega-menu:has(.mega-menu-inner)::before {
        display: none;
    }

    .dropdown-menu.mega-menu:not(:has(.mega-menu-inner)) {
        min-width: 720px;
        left: auto;
        right: 0;
        transform: none;
        padding: 1.5rem;
        padding-top: 1.75rem;
        border: 1px solid var(--color-gray-200);
        border-radius: 12px;
        box-shadow: 0 20px 40px rgba(0, 0, 0, 0.12), 0 8px 16px rgba(0, 0, 0, 0.08);
        margin-top: 0;
    }

    .dropdown-menu.mega-menu:not(:has(.mega-menu-inner))::before {
        content: '';
        position: absolute;
        top: -8px;
        /* Position arrow near right side to align with Calculators link */
        right: 50px;
        left: auto;
        transform: none;
        border: 8px solid transparent;
        border-bottom-color: white;
        filter: drop-shadow(0 -2px 2px rgba(0, 0, 0, 0.06));
    }

    /* Invisible bridge to prevent hover gap flickering */
    .dropdown-menu.mega-menu::after {
        content: '';
        position: absolute;
        top: -24px;
        /* Extends above the menu to bridge the gap */
        left: 0;
        right: 0;
        height: 24px;
        background: transparent;
    }

    .mega-menu-grid {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 0.5rem;
    }

    .mega-menu-item {
        display: flex;
        align-items: center;
        gap: var(--space-3);
        padding: 0.875rem 1rem;
        border-radius: 10px;
        transition: all 0.2s ease;
        text-decoration: none;
        color: var(--color-gray-700);
    }

    .mega-menu-item:hover {
        background: rgba(37, 99, 235, 0.08);
        color: var(--color-primary);
        text-decoration: none;
        transform: translateX(2px);
    }

    /* Focus state for keyboard accessibility */
    .mega-menu-item:focus-visible {
        outline: 2px solid var(--color-primary);
        outline-offset: 2px;
        background: rgba(37, 99, 235, 0.05);
    }

    .mega-menu-icon {
        font-size: 1.25rem;
        flex-shrink: 0;
        width: 40px;
        height: 40px;
        display: flex;
        align-items: center;
        justify-content: center;
        background: var(--color-gray-100);
        border-radius: 10px;
        transition: background-color 0.2s ease, color 0.2s ease;
    }

    .mega-menu-item:hover .mega-menu-icon {
        background: var(--color-primary);
        color: #ffffff;
    }

    .mega-menu-title {
        font-weight: 600;
        font-size: 0.95rem;
        line-height: 1.3;
    }
}

/* Dark mode mega menu */
[data-theme="dark"] .dropdown-menu.mega-menu {
    background: #1e293b;
    border-color: #334155;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4), 0 8px 16px rgba(0, 0, 0, 0.3);
}

[data-theme="dark"] .dropdown-menu.mega-menu::before {
    border-bottom-color: #1e293b;
}

[data-theme="dark"] .mega-menu-item {
    color: #e2e8f0;
}

[data-theme="dark"] .mega-menu-item:hover {
    background: rgba(96, 165, 250, 0.12);
    color: #93c5fd;
}

[data-theme="dark"] .mega-menu-item:focus-visible {
    outline-color: #60a5fa;
    background: rgba(96, 165, 250, 0.1);
}

[data-theme="dark"] .mega-menu-icon {
    background: #334155;
}

[data-theme="dark"] .mega-menu-item:hover .mega-menu-icon {
    background: var(--color-primary);
    color: #ffffff;
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
    display: flex;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--space-2);
    z-index: calc(var(--z-sticky) + 1);
}

.mobile-menu-toggle span {
    display: block;
    width: 25px;
    height: 3px;
    background: var(--color-gray-700);
    border-radius: var(--radius-full);
    transition: all var(--transition-fast);
}

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

.mobile-menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translateY(8px);
}

.mobile-menu-toggle.active span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translateY(-8px);
}

/* Mobile Menu */
.mobile-nav {
    display: block;
    position: fixed;
    top: 0;
    right: -100%;
    width: 80%;
    max-width: 350px;
    height: 100vh;
    background: white;
    box-shadow: var(--shadow-xl);
    transition: right var(--transition-slow);
    z-index: var(--z-sticky);
    overflow-y: auto;
    padding: var(--space-20) var(--space-6) var(--space-6);
}

.mobile-nav.active {
    right: 0;
}

.mobile-nav-list {
    list-style: none;
    margin: 0;
}

.mobile-nav-item {
    margin: 0;
    border-bottom: 1px solid var(--color-gray-200);
}

.mobile-nav-link {
    display: block;
    padding: var(--space-4);
    color: var(--color-gray-700);
    font-weight: var(--font-medium);
    font-size: var(--text-lg);
}

.mobile-nav-link:hover {
    color: var(--color-primary);
    background: var(--color-gray-50);
    text-decoration: none;
}

.mobile-dropdown-toggle {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    background: none;
    border: none;
    padding: var(--space-4);
    font-size: var(--text-lg);
    font-weight: var(--font-medium);
    color: var(--color-gray-700);
    cursor: pointer;
    text-align: left;
}

.mobile-dropdown-content {
    max-height: 0;
    overflow: hidden;
    transition: none;
    background: var(--color-gray-50);
}

.mobile-dropdown-content.active {
    max-height: 500px;
}

.mobile-dropdown-link {
    display: block;
    padding: var(--space-3) var(--space-6);
    color: var(--color-gray-600);
    font-size: var(--text-base);
}

.mobile-dropdown-link:hover {
    color: var(--color-primary);
    text-decoration: none;
}

/* Overlay for Mobile Menu */
.mobile-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: calc(var(--z-sticky) - 1);
    opacity: 0;
    transition: opacity var(--transition-slow);
}

.mobile-overlay.active {
    display: block;
    opacity: 1;
}

/* ============================================
   FOOTER
   ============================================ */

.site-footer {
    background: var(--color-gray-900);
    color: var(--color-gray-300);
    padding: var(--space-12) 0 var(--space-6);
    margin-top: var(--space-16);
}

.footer-container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-8);
    margin-bottom: var(--space-8);
}

.footer-section h3 {
    color: white;
    font-size: var(--text-lg);
    margin-bottom: var(--space-4);
}

.footer-section h3 span {
    color: #ffffff;
}

.footer-section p {
    color: var(--color-gray-300);
    line-height: 1.8;
}

.footer-links {
    list-style: none;
    margin: 0;
}

.footer-links li {
    margin-bottom: var(--space-2);
}

.footer-links a {
    color: #f1f5f9;
    transition: color var(--transition-fast);
    display: inline-flex;
    align-items: center;
    min-height: 2.25rem;
    line-height: 1.45;
    font-weight: 500;
    font-size: var(--text-sm);
}

.footer-links a:hover {
    color: white;
    text-decoration: none;
}

.footer-links a:visited {
    color: #e2e8f0;
}

.footer-bottom {
    border-top: 1px solid var(--color-gray-700);
    padding-top: var(--space-6);
    text-align: center;
    color: var(--color-gray-400);
    font-size: var(--text-sm);
}

.footer-bottom p {
    margin-bottom: var(--space-2);
}

.footer-bottom a {
    color: var(--color-gray-400);
}

.footer-bottom a:hover {
    color: var(--color-primary-light);
}

/* Enhanced Footer Styles */
.footer-grid-enhanced {
    grid-template-columns: 1fr;
}

@media (min-width: 640px) {
    .footer-grid-enhanced {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 768px) {
    .footer-grid-enhanced {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (min-width: 1024px) {
    .footer-grid-enhanced {
        grid-template-columns: 1.5fr repeat(5, 1fr);
    }
}

.footer-about {
    grid-column: 1 / -1;
}

@media (min-width: 1024px) {
    .footer-about {
        grid-column: 1 / 2;
    }
}

/*Footer CTA Section */
.footer-cta {
    background: var(--color-action);
    border: 1px solid var(--color-action-dark);
    border-radius: var(--radius-lg);
    padding: var(--space-8);
    margin: var(--space-8) 0;
    text-align: center;
}

.footer-cta-content h3 {
    color: #ffffff;
    font-size: var(--text-xl);
    font-weight: 700;
    margin-bottom: var(--space-3);
}

.footer-cta-content h3 span {
    border: none;
    padding: 0;
}

.footer-cta-content p {
    color: rgba(255, 255, 255, 0.95);
    font-size: var(--text-base);
    max-width: 640px;
    margin: 0 auto;
    line-height: 1.65;
}

/* ============================================
   AD SLOTS (CLS-safe — reserved height, no late layout growth)
   ============================================ */

.ad-region {
  margin: var(--space-8) 0;
  display: block;
}

.ad-slot {
  width: 100%;
  display: block;
  min-height: 280px;
  contain: layout paint;
  box-sizing: border-box;
  margin: var(--space-6) 0;
  padding: var(--space-2);
  background: var(--color-gray-50);
  border-radius: var(--radius-md);
  border: 1px dashed var(--color-gray-300);
}

.ad-slot-horizontal {
  min-height: 280px;
}

.ad-slot-sidebar {
  min-height: 250px;
}

@media (max-width: 768px) {
  .ad-slot {
    min-height: 250px;
    contain: layout paint;
  }
  .ad-slot-horizontal {
    min-height: 250px;
  }
}

.ad-slot ins.adsbygoogle {
  display: block;
  margin: 0 auto;
}

/* ============================================
   MAIN CONTENT LAYOUT
   ============================================ */

.main-content {
    min-height: calc(100vh - 400px);
    padding: var(--space-8) 0;
}

.content-wrapper {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

/* Calculator pages — use wider canvas on large screens */
.page-calculator .content-wrapper,
.content-wrapper:has(.calculator-layout) {
    width: 100%;
    max-width: min(1440px, calc(100vw - 2rem));
    box-sizing: border-box;
}

@media (max-width: 480px) {
    .content-wrapper {
        padding: 0 12px;
    }
}

/* Show desktop navigation on screens 900px and wider */
@media (min-width: 900px) {
    .main-nav {
        display: flex;
        align-items: center;
        gap: var(--space-2);
        flex-shrink: 0;
    }
}

/* ============================================
   RESPONSIVE BREAKPOINTS
   ============================================ */

@media (min-width: 900px) {

    /* Show desktop nav, hide mobile toggle */
    .main-nav {
        display: flex;
        align-items: center;
        gap: var(--space-2);
        flex-shrink: 0;
    }

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

    .mobile-nav {
        display: none;
    }

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

@media (min-width: 1024px) {
    .footer-grid {
        grid-template-columns: 2fr repeat(3, 1fr);
    }

    .header-container {
        padding: var(--space-5) var(--container-padding);
    }
}

/* ============================================
   BREADCRUMB
   ============================================ */

.breadcrumb {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--text-sm);
    color: var(--color-gray-600);
    margin-bottom: var(--space-6);
    flex-wrap: wrap;
}

.breadcrumb-item {
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.breadcrumb-separator {
    color: var(--color-gray-400);
}

.breadcrumb a {
    color: var(--color-primary);
}

.breadcrumb a:hover {
    text-decoration: underline;
}