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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f8f9fa;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

header {
    background: linear-gradient(135deg, #1a1a1a 0%, #333 100%);
    color: white;
    padding: 1rem 0;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

header .logo {
    font-size: 1.8rem;
    font-weight: 700;
}

header h1 {
    font-size: 1.8rem;
    font-weight: 700;
}

/* Navigation Styles - Mobile First */
/* CSS Custom Properties for theming and consistency */
:root {
    --nav-bg-primary: #1a1a1a;
    --nav-bg-secondary: #333;
    --nav-text-color: #fff;
    --nav-hover-bg: rgba(255,255,255,0.2);
    --nav-active-bg: rgba(255,255,255,0.3);
    --nav-focus-color: rgba(255,255,255,0.8);
    --nav-border-color: rgba(255,255,255,0.1);
    --nav-shadow: 0 4px 10px rgba(0,0,0,0.3);
    --nav-transition-fast: 0.2s ease;
    --nav-transition-smooth: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --nav-z-index: 1000;
    --touch-target-min: 44px;
}

.main-nav {
    position: relative;
}

.nav-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--nav-text-color);
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 4px;
    transition: background-color var(--nav-transition-fast);
    min-width: var(--touch-target-min);
    min-height: var(--touch-target-min);
    position: relative;
    z-index: calc(var(--nav-z-index) + 1);
    /* Mobile touch optimizations */
    -webkit-tap-highlight-color: rgba(0,0,0,0);
    touch-action: manipulation;
    -webkit-touch-callout: none;
}

.nav-toggle:hover {
    background-color: var(--nav-hover-bg);
}

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

.nav-toggle:active {
    transform: scale(0.95);
    transition: transform 0.1s ease;
}

.hamburger {
    display: block;
    width: 20px;
    height: 2px;
    background-color: var(--nav-text-color);
    position: relative;
    transition: background-color var(--nav-transition-smooth);
    will-change: transform, background-color;
}

.hamburger::before,
.hamburger::after {
    content: '';
    position: absolute;
    width: 20px;
    height: 2px;
    background-color: var(--nav-text-color);
    transition: all var(--nav-transition-smooth);
    will-change: transform, top;
}

.hamburger::before {
    top: -6px;
}

.hamburger::after {
    top: 6px;
}

/* Enhanced hamburger animation when open */
.nav-toggle[aria-expanded="true"] .hamburger {
    background-color: transparent;
}

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

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

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
    .hamburger,
    .hamburger::before,
    .hamburger::after {
        transition: none;
    }
    
    .nav-toggle:active {
        transform: none;
    }
}

.nav-links {
    display: flex;
    gap: 2rem;
    align-items: center;
}

.nav-links a {
    color: var(--nav-text-color);
    text-decoration: none;
    font-weight: 500;
    padding: 0.5rem 1rem;
    border-radius: 5px;
    transition: all var(--nav-transition-smooth);
    position: relative;
    min-height: var(--touch-target-min);
    min-width: var(--touch-target-min);
    display: flex;
    align-items: center;
    justify-content: center;
}

.nav-links a:hover,
.nav-links a:focus {
    background-color: var(--nav-hover-bg);
    outline: none;
    transform: translateY(-1px);
}

.nav-links a.active {
    background-color: var(--nav-active-bg);
    font-weight: 600;
}

.nav-links a:focus-visible {
    outline: 2px solid var(--nav-focus-color);
    outline-offset: 2px;
}

.nav-links a:active {
    transform: translateY(0);
    transition: transform 0.1s ease;
}

/* Navigation State Management */
/* Hide all conditional navigation items by default */
.main-nav [data-nav-visibility] {
    display: none;
}

/* Guest state - show only guest-specific items */
.main-nav[data-nav-state="guest"] [data-nav-visibility="guest"] {
    display: flex;
}

/* Personal account state - show authenticated items but not business */
.main-nav[data-nav-state="personal"] [data-nav-visibility="authenticated"] {
    display: flex;
}

/* Business account state - show all authenticated and business items */
.main-nav[data-nav-state="business"] [data-nav-visibility="authenticated"],
.main-nav[data-nav-state="business"] [data-nav-visibility="business"] {
    display: flex;
}

/* Mobile Navigation Backdrop */
.nav-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
    opacity: 0;
    visibility: hidden;
    z-index: calc(var(--nav-z-index) - 1);
    transition: all var(--nav-transition-smooth);
    will-change: opacity, visibility;
    /* Optimize touch performance */
    touch-action: none;
    -webkit-tap-highlight-color: rgba(0,0,0,0);
}

.nav-backdrop.active {
    opacity: 1;
    visibility: visible;
}

/* Mobile Responsive Navigation */
@media (max-width: 768px) {
    .nav-toggle {
        display: block;
    }
    
    .nav-links {
        position: fixed;
        top: 0;
        right: 0;
        bottom: 0;
        width: min(80vw, 320px);
        background: linear-gradient(135deg, var(--nav-bg-primary) 0%, var(--nav-bg-secondary) 100%);
        flex-direction: column;
        gap: 0;
        padding: max(5rem, calc(env(safe-area-inset-top) + 3rem)) env(safe-area-inset-right, 0) max(2rem, env(safe-area-inset-bottom)) 0;
        box-shadow: var(--nav-shadow);
        transform: translateX(100%);
        opacity: 0;
        visibility: hidden;
        transition: all var(--nav-transition-smooth);
        z-index: var(--nav-z-index);
        will-change: transform, opacity;
        overflow-y: auto;
        -webkit-overflow-scrolling: touch;
        /* Fix transform and z-index issues for touch events */
        transform-style: flat;
        backface-visibility: hidden;
        /* Optimize touch scrolling */
        touch-action: pan-y;
    }
    
    .nav-links.active {
        transform: translateX(0);
        opacity: 1;
        visibility: visible;
        /* Ensure proper touch event handling when active */
        transform-style: flat;
    }
    
    .nav-links a {
        padding: 1rem 1.5rem;
        border-radius: 0;
        width: 100%;
        justify-content: flex-start;
        border-bottom: 1px solid var(--nav-border-color);
        font-size: 1.1rem;
        min-height: var(--touch-target-min);
        transition: all var(--nav-transition-fast);
        position: relative;
        overflow: hidden;
        /* iOS touch optimizations */
        -webkit-tap-highlight-color: rgba(0,0,0,0);
        touch-action: manipulation;
        -webkit-touch-callout: none;
        -webkit-user-select: none;
        user-select: none;
    }
    
    .nav-links a::before {
        content: '';
        position: absolute;
        left: 0;
        top: 0;
        height: 100%;
        width: 4px;
        background: var(--nav-text-color);
        transform: translateX(-100%);
        transition: transform var(--nav-transition-smooth);
    }
    
    .nav-links a:last-child {
        border-bottom: none;
    }
    
    .nav-links a:hover,
    .nav-links a:focus {
        background-color: var(--nav-hover-bg);
        transform: translateX(4px);
        padding-left: 2rem;
    }
    
    .nav-links a:hover::before,
    .nav-links a:focus::before,
    .nav-links a.active::before {
        transform: translateX(0);
    }
    
    .nav-links a.active {
        background-color: var(--nav-active-bg);
        padding-left: 2rem;
    }
    
    /* Staggered animation for menu items */
    .nav-links.active a {
        animation: slideInFromRight 0.4s ease-out backwards;
    }
    
    .nav-links.active a:nth-child(1) { animation-delay: 0.05s; }
    .nav-links.active a:nth-child(2) { animation-delay: 0.1s; }
    .nav-links.active a:nth-child(3) { animation-delay: 0.15s; }
    .nav-links.active a:nth-child(4) { animation-delay: 0.2s; }
    .nav-links.active a:nth-child(5) { animation-delay: 0.25s; }
    .nav-links.active a:nth-child(6) { animation-delay: 0.3s; }
    .nav-links.active a:nth-child(7) { animation-delay: 0.35s; }
    .nav-links.active a:nth-child(8) { animation-delay: 0.4s; }
    
    @keyframes slideInFromRight {
        from {
            opacity: 0;
            transform: translateX(30px);
        }
        to {
            opacity: 1;
            transform: translateX(0);
        }
    }
    
    /* Mobile navigation state management */
    .main-nav[data-nav-state="guest"] [data-nav-visibility="guest"],
    .main-nav[data-nav-state="personal"] [data-nav-visibility="authenticated"],
    .main-nav[data-nav-state="business"] [data-nav-visibility="authenticated"],
    .main-nav[data-nav-state="business"] [data-nav-visibility="business"] {
        display: flex;
    }
    
    /* Reduced motion support for mobile navigation */
    @media (prefers-reduced-motion: reduce) {
        .nav-links {
            transition: opacity var(--nav-transition-fast);
        }
        
        .nav-links a {
            transition: background-color var(--nav-transition-fast);
        }
        
        .nav-links a::before {
            transition: none;
        }
        
        .nav-links a:hover,
        .nav-links a:focus {
            transform: none;
            padding-left: 1.5rem;
        }
        
        .nav-links a.active {
            padding-left: 1.5rem;
        }
        
        .nav-links.active a {
            animation: none;
        }
        
        .nav-backdrop {
            backdrop-filter: none;
        }
    }
}

/* Desktop Navigation - Reset mobile styles above 768px */
@media (min-width: 769px) {
    .nav-backdrop {
        display: none;
    }
    
    .nav-links {
        position: static;
        transform: none;
        opacity: 1;
        visibility: visible;
        width: auto;
        background: none;
        flex-direction: row;
        padding: 0;
        box-shadow: none;
        overflow: visible;
    }
    
    .nav-links a {
        border-bottom: none;
        font-size: 1rem;
        padding: 0.5rem 1rem;
    }
    
    .nav-links a::before {
        display: none;
    }
    
    .nav-links a:hover,
    .nav-links a:focus {
        padding-left: 1rem;
        transform: translateY(-1px);
    }
    
    .nav-links a.active {
        padding-left: 1rem;
    }
}

/* Tablet responsive adjustments */
@media (max-width: 1024px) and (min-width: 769px) {
    .nav-links {
        gap: 1.5rem;
    }
    
    .nav-links a {
        padding: 0.5rem 0.75rem;
        font-size: 0.9rem;
    }
}

/* Large screen optimizations */
@media (min-width: 1200px) {
    .nav-links {
        gap: 2.5rem;
    }
    
    .nav-links a {
        padding: 0.6rem 1.2rem;
    }
}
nav[data-nav-state="personal"] [data-account-type="personal"],
nav[data-nav-state="business"] [data-account-type="business"] {
    display: inline;
}

/* Active state styling */
nav a.active {
    background-color: rgba(255,255,255,0.3);
    font-weight: 600;
}

/* Logout link styling */
nav a[data-nav-item="logout"] {
    cursor: pointer;
}

main {
    padding: 2rem 0;
    min-height: calc(100vh - 140px);
}

.form-header {
    text-align: center;
    margin-bottom: 3rem;
}

.form-header h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: #dc2626;
}

.form-header p {
    font-size: 1.1rem;
    color: #666;
    max-width: 600px;
    margin: 0 auto;
}

.car-form {
    background: white;
    border-radius: 12px;
    padding: 2rem;
    box-shadow: 0 5px 15px rgba(0,0,0,0.08);
    margin-bottom: 2rem;
}

.form-section {
    margin-bottom: 2.5rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid #eee;
}

.form-section:last-of-type {
    border-bottom: none;
    margin-bottom: 1rem;
}

.form-section h3 {
    font-size: 1.4rem;
    margin-bottom: 1.5rem;
    color: #dc2626;
    border-left: 4px solid #dc2626;
    padding-left: 1rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-bottom: 1.5rem;
}

label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: #333;
}

input[type="text"],
input[type="number"],
input[type="email"],
input[type="tel"],
select,
textarea {
    width: 100%;
    padding: 0.75rem;
    border: 2px solid #ddd;
    border-radius: 6px;
    font-size: 1rem;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

input[type="text"]:focus,
input[type="number"]:focus,
input[type="email"]:focus,
input[type="tel"]:focus,
select:focus,
textarea:focus {
    outline: none;
    border-color: #dc2626;
    box-shadow: 0 0 0 3px rgba(220, 38, 38, 0.1);
}

textarea {
    resize: vertical;
    min-height: 100px;
}

.checkbox-group {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 0.5rem;
    margin-top: 0.5rem;
}

.checkbox-group label {
    display: flex;
    align-items: center;
    font-weight: normal;
    margin-bottom: 0;
}

.checkbox-group input[type="checkbox"] {
    width: auto;
    margin-right: 0.5rem;
}

input[type="file"] {
    width: 100%;
    padding: 0.5rem;
    border: 2px dashed #ddd;
    border-radius: 6px;
    background-color: #fafafa;
}

small {
    display: block;
    margin-top: 0.5rem;
    color: #666;
    font-size: 0.9rem;
}

.form-actions {
    display: flex;
    gap: 1rem;
    justify-content: flex-end;
    padding-top: 2rem;
    border-top: 1px solid #eee;
}

.btn-primary,
.btn-secondary {
    padding: 0.75rem 2rem;
    border: none;
    border-radius: 6px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-primary {
    background: linear-gradient(135deg, #dc2626 0%, #b91c1c 100%);
    color: white;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(220, 38, 38, 0.3);
}

.btn-secondary {
    background: #f8f9fa;
    color: #333;
    border: 2px solid #ddd;
}

.btn-secondary:hover {
    background: #e9ecef;
    border-color: #adb5bd;
}

footer {
    background: #1a1a1a;
    color: white;
    text-align: center;
    padding: 1.5rem 0;
    margin-top: auto;
}

@media (max-width: 768px) {
    header .container {
        display: flex;
        justify-content: space-between;
        align-items: center;
    }
}
    
    .form-header h2 {
        font-size: 2rem;
    }
    
    .car-form {
        padding: 1.5rem;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .checkbox-group {
        grid-template-columns: 1fr;
    }
    
    .form-actions {
        flex-direction: column;
    }
}

.error {
    border-color: #dc3545 !important;
    box-shadow: 0 0 0 3px rgba(220, 53, 69, 0.1) !important;
}

.error-message {
    color: #dc3545;
    font-size: 0.9rem;
    margin-top: 0.25rem;
    display: block;
}

/* Breadcrumb Navigation */
.breadcrumb-navigation {
    margin-bottom: 1.5rem;
    padding: 0.75rem 0;
    border-bottom: 1px solid #e9ecef;
}

.breadcrumb {
    display: flex;
    flex-wrap: wrap;
    padding: 0;
    margin: 0;
    list-style: none;
    background: transparent;
    border-radius: 0;
}

.breadcrumb-item {
    display: flex;
    align-items: center;
}

.breadcrumb-item + .breadcrumb-item::before {
    display: inline-block;
    padding: 0 0.5rem;
    color: #6c757d;
    content: ">";
    font-weight: 500;
}

.breadcrumb-link {
    color: #007bff;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

.breadcrumb-link:hover {
    color: #0056b3;
    text-decoration: underline;
}

.breadcrumb-item.active span {
    color: #6c757d;
    font-weight: 500;
}

@media (max-width: 768px) {
    .breadcrumb-navigation {
        margin-bottom: 1rem;
        padding: 0.5rem 0;
    }
    
    .breadcrumb {
        font-size: 0.9rem;
    }
    
    .breadcrumb-item + .breadcrumb-item::before {
        padding: 0 0.3rem;
    }
}

/* Service Type Selector Styles */
.service-type-selector {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1rem;
    margin-top: 1rem;
}

.service-option {
    position: relative;
    cursor: pointer;
    display: block;
}

.service-option input[type="radio"] {
    position: absolute;
    opacity: 0;
    pointer-events: none;
}

.option-card {
    border: 2px solid #e9ecef;
    border-radius: 12px;
    padding: 1.5rem;
    text-align: center;
    transition: all 0.3s ease;
    background: white;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.option-card:hover {
    border-color: #007bff;
    box-shadow: 0 4px 12px rgba(0, 123, 255, 0.15);
    transform: translateY(-2px);
}

.service-option input[type="radio"]:checked + .option-card {
    border-color: #007bff;
    background-color: #f8f9ff;
    box-shadow: 0 4px 12px rgba(0, 123, 255, 0.2);
}

.option-icon {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
    display: block;
}

.option-card h4 {
    color: #333;
    margin: 0.5rem 0;
    font-size: 1.1rem;
    font-weight: 600;
}

.option-card p {
    color: #666;
    margin: 0;
    font-size: 0.9rem;
    line-height: 1.4;
}

.service-option input[type="radio"]:checked + .option-card h4 {
    color: #007bff;
}

.section-description {
    color: #666;
    font-size: 0.95rem;
    margin-bottom: 0.5rem;
}

/* Mobile responsive adjustments */
@media (max-width: 768px) {
    .service-type-selector {
        grid-template-columns: 1fr;
    }
    
    .option-card {
        padding: 1.25rem;
    }
    
    .option-icon {
        font-size: 2rem;
    }
}

/* Service Tabs Styles */
.service-tabs {
    display: flex;
    background: white;
    border-radius: 12px;
    padding: 0.5rem;
    margin-bottom: 2rem;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    gap: 0.5rem;
}

.tab-button {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    padding: 1rem 1.5rem;
    border: none;
    background: transparent;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 1rem;
    font-weight: 500;
    color: #666;
    min-height: 60px;
}

.tab-button:hover {
    background-color: #f8f9fa;
    color: #333;
}

.tab-button.active {
    background: linear-gradient(135deg, #007bff 0%, #0056b3 100%);
    color: white;
    box-shadow: 0 4px 12px rgba(0, 123, 255, 0.3);
}

.tab-button.active:hover {
    background: linear-gradient(135deg, #0056b3 0%, #004085 100%);
}

.tab-icon {
    font-size: 1.5rem;
    display: flex;
    align-items: center;
}

.tab-text {
    font-weight: 600;
}

/* Mobile responsive tabs */
@media (max-width: 768px) {
    .service-tabs {
        flex-direction: column;
        gap: 0.25rem;
        padding: 0.25rem;
    }
    
    .tab-button {
        padding: 0.75rem 1rem;
        min-height: 50px;
    }
    
    .tab-icon {
        font-size: 1.25rem;
    }
    
    .tab-text {
        font-size: 0.9rem;
    }
}

@media (max-width: 480px) {
    .tab-button {
        flex-direction: column;
        gap: 0.25rem;
        padding: 0.75rem 0.5rem;
    }
    
    .tab-text {
        font-size: 0.8rem;
        text-align: center;
        line-height: 1.2;
    }
}