/* AutoVibe Initial CSS for project 1758279277789 - Iteration 1 */

/* CSS Reset / Base Styles */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

/* CSS Variables for Theme Management */
:root {
    /* Colors */
    --color-primary: #003366; /* Dark Blue - Professional */
    --color-secondary: #0056b3; /* Medium Blue - Accent */
    --color-accent: #f0a500; /* Gold/Amber - Highlights, interactive elements */
    --color-text-dark: #333333; /* Dark Grey - Body text */
    --color-text-light: #ffffff; /* White - For contrast on dark backgrounds */
    --color-background-light: #f4f7f6; /* Light Grey - Main background */
    --color-background-card: #ffffff; /* White - Card backgrounds */
    --color-border: #e0e0e0; /* Light Grey - Borders */
    --color-shadow: rgba(0, 0, 0, 0.1); /* Subtle shadow */
    --color-error: #dc3545; /* Red for errors */

    /* Typography */
    --font-family-body: 'Open Sans', 'Helvetica Neue', Arial, sans-serif;
    --font-family-heading: 'Playfair Display', Georgia, serif; /* Elegant Serif for headings */
    --font-size-base: 16px;
    --line-height-base: 1.6;

    /* Spacing */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-xxl: 48px;

    /* Border Radius */
    --border-radius-sm: 4px;
    --border-radius-md: 8px;
    --border-radius-lg: 12px;

    /* Transitions */
    --transition-speed: 0.3s;
    --transition-timing: ease-in-out;
}

/* Global Styles */
body {
    font-family: var(--font-family-body);
    font-size: var(--font-size-base);
    line-height: var(--line-height-base);
    color: var(--color-text-dark);
    background-color: var(--color-background-light);
    min-height: 100vh;
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Basic Layout & Containers */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
    width: 100%;
}

main {
    padding-top: 70px; /* Offset for fixed header */
}

section {
    padding: var(--spacing-xxl) 0;
}

section:nth-of-type(even) {
    background-color: #fcfcfc;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-family-heading);
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
    line-height: 1.2;
}

h1 {
    font-size: 2.5rem;
    text-align: center;
    margin-top: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

h2 {
    font-size: 2rem;
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

h3 {
    font-size: 1.75rem;
}

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

a {
    color: var(--color-secondary);
    text-decoration: none;
    transition: color var(--transition-speed) var(--transition-timing);
}

a:hover,
a:focus {
    color: var(--color-accent);
    text-decoration: underline;
    outline: none; /* Handled by box-shadow/border for accessibility */
}

/* Buttons */
.btn {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--border-radius-sm);
    font-family: var(--font-family-body);
    font-size: var(--font-size-base);
    cursor: pointer;
    text-align: center;
    white-space: nowrap;
    transition: background-color var(--transition-speed) var(--transition-timing),
                color var(--transition-speed) var(--transition-timing),
                border-color var(--transition-speed) var(--transition-timing),
                box-shadow var(--transition-speed) var(--transition-timing);
    text-decoration: none; /* Ensure buttons don't have underline */
    border: 1px solid transparent;
}

.btn:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(0, 86, 179, 0.3); /* Focus ring */
}

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

.btn-primary:hover,
.btn-primary:focus {
    background-color: var(--color-secondary);
    border-color: var(--color-secondary);
}

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

.btn-secondary:hover,
.btn-secondary:focus {
    background-color: var(--color-primary);
    color: var(--color-text-light);
    border-color: var(--color-primary);
}

/* Utility Classes */
.hidden {
    display: none !important;
}

/* Header */
.main-header {
    background-color: var(--color-primary);
    color: var(--color-text-light);
    padding: var(--spacing-md) 0;
    position: fixed;
    width: 100%;
    top: 0;
    left: 0;
    z-index: 1000;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

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

.main-header .logo {
    font-family: var(--font-family-heading);
    font-size: 1.8rem;
    font-weight: bold;
    color: var(--color-text-light);
    text-decoration: none;
    transition: color var(--transition-speed);
}

.main-header .logo:hover {
    color: var(--color-accent);
}

.main-nav ul {
    list-style: none;
    display: flex;
    gap: var(--spacing-xl);
}

.main-nav a {
    color: var(--color-text-light);
    font-size: 1.1rem;
    text-decoration: none;
    padding: var(--spacing-sm) 0;
    position: relative;
}

.main-nav a::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 0;
    height: 2px;
    background-color: var(--color-accent);
    transition: width var(--transition-speed) var(--transition-timing);
}

.main-nav a:hover::after,
.main-nav a:focus::after {
    width: 100%;
}

/* Hero Section */
.hero {
    background: linear-gradient(rgba(0, 51, 102, 0.7), rgba(0, 51, 102, 0.7)), url('https://via.placeholder.com/1920x800?text=Luxury+Jet+Background') no-repeat center center/cover;
    color: var(--color-text-light);
    text-align: center;
    padding: var(--spacing-xxl) 0;
    display: flex;
    align-items: center;
    min-height: 500px;
}

.hero h1 {
    color: var(--color-text-light);
    font-size: 3.5rem;
    margin-bottom: var(--spacing-md);
}

.hero p {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-xl);
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.hero .btn-primary {
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: 1.1rem;
    border-radius: var(--border-radius-md);
}

/* Features Section */
.features-section h2 {
    color: var(--color-primary);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
}

.feature-card {
    background-color: var(--color-background-card);
    border-radius: var(--border-radius-md);
    box-shadow: 0 2px 10px var(--color-shadow);
    padding: var(--spacing-lg);
    text-align: center;
    transition: transform var(--transition-speed) var(--transition-timing),
                box-shadow var(--transition-speed) var(--transition-timing);
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 4px 15px var(--color-shadow);
}

.feature-card h3 {
    color: var(--color-secondary);
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
}

.feature-card p {
    color: var(--color-text-dark);
    font-size: 0.95rem;
    line-height: 1.5;
}

/* Aircraft Listings Section */
.aircraft-listings-section h2 {
    color: var(--color-primary);
}

.search-filter-controls {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    justify-content: center;
    margin-bottom: var(--spacing-xl);
    padding: var(--spacing-md);
    background-color: var(--color-background-card);
    border-radius: var(--border-radius-md);
    box-shadow: 0 2px 8px var(--color-shadow);
}

.search-filter-controls input[type="text"],
.search-filter-controls select {
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-sm);
    font-family: var(--font-family-body);
    font-size: var(--font-size-base);
    flex: 1;
    min-width: 200px; /* Ensure inputs are not too small */
    transition: border-color var(--transition-speed);
}

.search-filter-controls input[type="text"]:focus,
.search-filter-controls select:focus {
    outline: none;
    border-color: var(--color-secondary);
    box-shadow: 0 0 0 2px rgba(0, 86, 179, 0.2);
}

.search-filter-controls .btn {
    flex-shrink: 0;
}

.aircraft-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

.aircraft-card {
    background-color: var(--color-background-card);
    border-radius: var(--border-radius-md);
    box-shadow: 0 2px 10px var(--color-shadow);
    transition: transform var(--transition-speed) var(--transition-timing),
                box-shadow var(--transition-speed) var(--transition-timing);
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.aircraft-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 4px 15px var(--color-shadow);
}

.aircraft-card__image {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-bottom: 1px solid var(--color-border);
}

.aircraft-card__info {
    padding: var(--spacing-lg);
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.aircraft-card__name {
    font-size: 1.5rem;
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
}

.aircraft-card__type,
.aircraft-card__capacity {
    font-size: 0.95rem;
    color: var(--color-text-dark);
    margin-bottom: var(--spacing-xs);
}

.aircraft-card__view-details-btn {
    margin-top: var(--spacing-md);
    align-self: flex-start; /* Align button to the left */
}

.no-results, .loading-message {
    text-align: center;
    grid-column: 1 / -1; /* Span across all columns */
    padding: var(--spacing-xl);
    color: var(--color-text-dark);
    font-size: 1.1rem;
}

/* Aircraft Detail Section */
.aircraft-detail-section {
    background-color: var(--color-background-light);
    padding: var(--spacing-xxl) 0;
}

.aircraft-detail-section .container {
    background-color: var(--color-background-card);
    border-radius: var(--border-radius-lg);
    box-shadow: 0 5px 20px var(--color-shadow);
    padding: var(--spacing-xl);
}

.aircraft-detail-section #back-to-list-btn {
    margin-bottom: var(--spacing-xl);
}

#detail-content {
    margin-bottom: var(--spacing-xl);
}

.aircraft-detail__name {
    text-align: center;
    font-size: 2.2rem;
    margin-bottom: var(--spacing-xl);
    color: var(--color-primary);
}

.aircraft-detail__gallery {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
    position: relative;
}

.gallery-images-container {
    flex-grow: 1;
    max-width: 800px; /* Limit gallery width */
    height: 450px; /* Fixed height for gallery */
    overflow: hidden;
    position: relative;
    border-radius: var(--border-radius-md);
    box-shadow: 0 2px 10px var(--color-shadow);
}

.detail-gallery__image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    position: absolute;
    top: 0;
    left: 0;
    transition: opacity var(--transition-speed) var(--transition-timing);
}

.detail-gallery__image.hidden {
    opacity: 0;
    pointer-events: none;
}

.gallery-nav-btn {
    background-color: rgba(0, 0, 0, 0.5);
    color: var(--color-text-light);
    border: none;
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: 1.5rem;
    cursor: pointer;
    border-radius: var(--border-radius-sm);
    transition: background-color var(--transition-speed);
    z-index: 10;
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
}

.gallery-nav-btn:hover:not(:disabled) {
    background-color: rgba(0, 0, 0, 0.7);
}

.gallery-nav-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.gallery-nav-btn:first-of-type {
    left: var(--spacing-md);
}

.gallery-nav-btn:last-of-type {
    right: var(--spacing-md);
}

.aircraft-detail__type,
.aircraft-detail__capacity,
.aircraft-detail__range,
.aircraft-detail__description {
    font-size: 1.1rem;
    margin-bottom: var(--spacing-md);
}

.aircraft-detail__type strong,
.aircraft-detail__capacity strong,
.aircraft-detail__range strong {
    color: var(--color-secondary);
}

.aircraft-detail__amenities {
    margin-top: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
    background-color: #f9f9f9;
    padding: var(--spacing-lg);
    border-radius: var(--border-radius-md);
    border: 1px solid var(--color-border);
}

.aircraft-detail__amenities strong {
    display: block;
    font-size: 1.2rem;
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
}

.aircraft-detail__amenities ul {
    list-style: none;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--spacing-sm);
}

.aircraft-detail__amenities li {
    background-color: var(--color-background-light);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--border-radius-sm);
    border: 1px solid var(--color-border);
    font-size: 0.95rem;
}

.aircraft-detail-section #inquire-btn {
    display: block;
    width: fit-content;
    margin: var(--spacing-xl) auto 0;
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: 1.1rem;
    border-radius: var(--border-radius-md);
}

/* Inquiry Form Section (Dynamic) */
.inquiry-form-section {
    padding: var(--spacing-xxl) 0;
    background-color: var(--color-background-light);
}

.inquiry-form-section .container {
    background-color: var(--color-background-card);
    border-radius: var(--border-radius-lg);
    box-shadow: 0 5px 20px var(--color-shadow);
    padding: var(--spacing-xl);
}

.inquiry-form-section h2 {
    color: var(--color-primary);
    margin-bottom: var(--spacing-xl);
}

#inquiry-aircraft-name {
    color: var(--color-secondary);
}

/* Contact Section (Static) and dynamic inquiry form */
.inquiry-form,
.contact-section .inquiry-form {
    max-width: 600px;
    margin: 0 auto;
}

.form-group {
    margin-bottom: var(--spacing-md);
}

.form-group label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-weight: bold;
    color: var(--color-primary);
}

.form-group input[type="text"],
.form-group input[type="email"],
.form-group textarea {
    width: 100%;
    padding: var(--spacing-sm);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-sm);
    font-family: var(--font-family-body);
    font-size: var(--font-size-base);
    transition: border-color var(--transition-speed), box-shadow var(--transition-speed);
}

.form-group input[type="text"]:focus,
.form-group input[type="email"]:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-secondary);
    box-shadow: 0 0 0 2px rgba(0, 86, 179, 0.2);
}

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

.inquiry-form .form-actions {
    display: flex;
    justify-content: flex-end;
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.contact-section .inquiry-form .btn-primary {
    display: block;
    width: 100%;
    max-width: 200px;
    margin: var(--spacing-lg) auto 0;
}

/* Footer */
.main-footer {
    background-color: var(--color-primary);
    color: var(--color-text-light);
    padding: var(--spacing-xl) 0;
    text-align: center;
    font-size: 0.9rem;
}

.main-footer .container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-md);
}

.footer-links {
    list-style: none;
    display: flex;
    gap: var(--spacing-lg);
}

.footer-links a {
    color: var(--color-text-light);
    text-decoration: none;
    transition: color var(--transition-speed);
}

.footer-links a:hover {
    color: var(--color-accent);
}

/* Responsive Design */
@media (max-width: 1024px) {
    .main-header .main-nav ul {
        gap: var(--spacing-lg);
    }

    .hero h1 {
        font-size: 3rem;
    }

    .features-grid {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    }

    .aircraft-grid {
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    }

    .gallery-images-container {
        height: 350px;
    }
}

@media (max-width: 768px) {
    .main-header .container {
        flex-direction: column;
        gap: var(--spacing-md);
    }

    .main-nav ul {
        width: 100%;
        justify-content: center;
        gap: var(--spacing-md);
    }

    main {
        padding-top: 120px; /* Adjust for stacked header */
    }

    .hero {
        min-height: 400px;
        padding: var(--spacing-xl) 0;
    }

    .hero h1 {
        font-size: 2.5rem;
    }

    .hero p {
        font-size: 1.1rem;
    }

    h1 {
        font-size: 2rem;
        margin-top: var(--spacing-lg);
        margin-bottom: var(--spacing-lg);
    }

    h2 {
        font-size: 1.8rem;
        margin-bottom: var(--spacing-lg);
    }

    .search-filter-controls {
        flex-direction: column;
        align-items: stretch;
    }

    .search-filter-controls input[type="text"],
    .search-filter-controls select,
    .search-filter-controls .btn {
        width: 100%;
        min-width: unset;
    }

    .aircraft-grid {
        grid-template-columns: 1fr; /* Single column on smaller screens */
    }

    .gallery-images-container {
        height: 250px;
    }

    .gallery-nav-btn {
        padding: var(--spacing-xs) var(--spacing-sm);
        font-size: 1.2rem;
    }

    .aircraft-detail__amenities ul {
        grid-template-columns: 1fr;
    }

    .inquiry-form .form-actions {
        flex-direction: column;
        gap: var(--spacing-sm);
    }

    .inquiry-form .form-actions .btn {
        width: 100%;
    }

    .main-footer .container {
        flex-direction: column;
        gap: var(--spacing-sm);
    }

    .footer-links {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
}

@media (max-width: 480px) {
    .main-header .logo {
        font-size: 1.5rem;
    }

    .main-nav ul {
        font-size: 0.9rem;
        gap: var(--spacing-sm);
    }

    main {
        padding-top: 100px; /* Further adjust for very small screens */
    }

    .hero h1 {
        font-size: 2rem;
    }

    .hero p {
        font-size: 1rem;
    }

    h1 {
        font-size: 1.8rem;
    }

    h2 {
        font-size: 1.5rem;
    }

    .feature-card h3 {
        font-size: 1.3rem;
    }

    .aircraft-card__name {
        font-size: 1.3rem;
    }

    .aircraft-detail__name {
        font-size: 1.8rem;
    }

    .gallery-images-container {
        height: 200px;
    }
}