/* Global Styles & Variables */
:root {
    --color-white: #ffffff;
    --color-black: #080808;
    --color-gray-50: #f8f9fa;
    --color-gray-100: #e9ecef;
    --color-gray-200: #dee2e6;
    --color-gray-600: #6c757d;
    --color-gray-800: #343a40;
    --color-gray-900: #212529;

    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Inter', sans-serif;

    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 8rem;

    --shadow-soft: 0 10px 30px rgba(0, 0, 0, 0.05);
    --shadow-hover: 0 20px 40px rgba(0, 0, 0, 0.1);
}

body {
    margin: 0;
    padding: 0;
    font-family: var(--font-body);
    color: var(--color-gray-800);
    background-color: var(--color-white);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

h1,
h2,
h3,
h4 {
    font-family: var(--font-heading);
    color: var(--color-gray-900);
    margin-top: 0;
    text-transform: uppercase;
    letter-spacing: -0.5px;
}

a {
    text-decoration: none;
    color: inherit;
    transition: all 0.3s ease;
}

ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

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

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--spacing-sm);
}

.bg-gray {
    background-color: var(--color-gray-50);
    /* Subtle diagonal pattern */
    background-image: repeating-linear-gradient(45deg,
            var(--color-gray-50),
            var(--color-gray-50) 10px,
            #f1f3f5 10px,
            #f1f3f5 11px);
}

/* Dynamic Buttons */
.btn-cta {
    display: inline-block;
    background-color: var(--color-black);
    color: var(--color-white);
    padding: 1rem 2rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    position: relative;
    overflow: hidden;
    z-index: 1;
    transition: transform 0.2s ease;
    clip-path: polygon(10% 0, 100% 0, 100% 100%, 0% 100%);
}

.btn-cta::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 0%;
    height: 100%;
    background-color: var(--color-gray-800);
    z-index: -1;
    transition: width 0.3s ease;
    transform: skewX(-20deg);
    transform-origin: left;
}

.btn-cta:hover::before {
    width: 150%;
}

.btn-cta:hover {
    transform: translateY(-2px);
}

/* Advertisement Note (Top) */
.ad-notification-top {
    background-color: var(--color-gray-900);
    color: var(--color-gray-100);
    font-size: 0.7rem;
    text-align: center;
    padding: 0.6rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Loader */
.page-loader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--color-black);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

.loader-text {
    font-family: var(--font-heading);
    font-size: 4rem;
    font-weight: 800;
    color: transparent;
    -webkit-text-stroke: 1px var(--color-white);
    letter-spacing: 2px;
    animation: fillText 2s infinite alternate;
}

@keyframes fillText {
    0% {
        color: transparent;
    }

    100% {
        color: var(--color-white);
    }
}

.page-loader.hidden {
    opacity: 0;
    visibility: hidden;
}

/* Header */
.main-header {
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 1px 0 rgba(0, 0, 0, 0.05);
    position: sticky;
    top: 0;
    z-index: 1000;
    padding: 0.5rem 0;
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.logo {
    font-family: var(--font-heading);
    font-size: 1.8rem;
    font-weight: 800;
    color: var(--color-black);
    letter-spacing: -1px;
    font-style: italic;
}

.desktop-nav {
    display: flex;
    align-items: center;
    gap: 2.5rem;
}

.nav-list {
    display: flex;
    gap: 2.5rem;
}

.nav-link {
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.9rem;
    letter-spacing: 0.5px;
    color: var(--color-gray-600);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--color-black);
    transition: width 0.3s ease;
}

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

.nav-link:hover::after {
    width: 100%;
}

.header-cta {
    padding: 0.7rem 1.5rem;
    font-size: 0.8rem;
    clip-path: polygon(10% 0, 100% 0, 100% 100%, 0% 100%);
}

/* Hamburger Menu */
.hamburger-menu {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    width: 30px;
    height: 20px;
    padding: 0;
    flex-direction: column;
    justify-content: space-between;
    z-index: 1001;
}

.bar {
    width: 100%;
    height: 3px;
    background-color: var(--color-black);
    transition: transform 0.3s cubic-bezier(0.68, -0.55, 0.27, 1.55);
}

/* Mobile Menu Overlay */
.mobile-menu-overlay {
    position: fixed;
    top: 0;
    right: -100%;
    width: 75%;
    height: 100%;
    background-color: var(--color-black);
    z-index: 1000;
    transition: right 0.4s cubic-bezier(0.77, 0, 0.18, 1);
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding-left: 2rem;
}

.mobile-menu-overlay.active {
    right: 0;
}

.mobile-nav-list {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.mobile-nav-link {
    font-family: var(--font-heading);
    font-size: 2rem;
    font-weight: 700;
    color: var(--color-white);
    text-transform: uppercase;
    opacity: 0;
    transform: translateX(20px);
    transition: opacity 0.3s ease, transform 0.3s ease;
}

.mobile-menu-overlay.active .mobile-nav-link {
    opacity: 1;
    transform: translateX(0);
}

.mobile-menu-overlay.active .mobile-nav-link:nth-child(1) {
    transition-delay: 0.1s;
}

.mobile-menu-overlay.active .mobile-nav-link:nth-child(2) {
    transition-delay: 0.15s;
}

.mobile-menu-overlay.active .mobile-nav-link:nth-child(3) {
    transition-delay: 0.2s;
}

/* ... more delays */

/* Hamburger Animation (Cross Icon) - Turning white on dark background */
.hamburger-menu.active .bar {
    background-color: var(--color-white);
    /* Important for contrast against black menu */
}

.hamburger-menu.active .bar:nth-child(1) {
    transform: translateY(8.5px) rotate(45deg);
}

.hamburger-menu.active .bar:nth-child(2) {
    transform: scale(0);
}

.hamburger-menu.active .bar:nth-child(3) {
    transform: translateY(-8.5px) rotate(-45deg);
}


/* Hero Section */
.hero-section {
    padding: var(--spacing-xl) 0;
    background: linear-gradient(135deg, #fdfdfd 0%, #f1f3f5 100%);
    position: relative;
    overflow: hidden;
}

/* Background element */
.hero-section::before {
    content: 'AIR';
    position: absolute;
    top: -5%;
    right: -5%;
    font-size: 30vw;
    font-family: var(--font-heading);
    font-weight: 900;
    color: rgba(0, 0, 0, 0.02);
    line-height: 1;
    pointer-events: none;
}

.hero-container {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: var(--spacing-lg);
    align-items: center;
}

.hero-title {
    font-size: 4rem;
    line-height: 0.95;
    margin-bottom: var(--spacing-sm);
    letter-spacing: -2px;
}

.hero-subtitle {
    font-size: 1.2rem;
    color: var(--color-gray-600);
    margin-bottom: var(--spacing-md);
    max-width: 90%;
}

.hero-disclaimer {
    font-size: 0.7rem;
    color: var(--color-gray-600);
    margin-top: var(--spacing-sm);
    font-style: italic;
    opacity: 0.7;
}

.hero-image-wrapper {
    position: relative;
    z-index: 1;
}

.hero-image {
    width: 120%;
    /* Slight overflow for dynamic look */
    height: auto;
    filter: drop-shadow(0 20px 40px rgba(0, 0, 0, 0.15));
    transform: rotate(-15deg) translateX(20px);
    transition: transform 0.5s ease;
}

.hero-image:hover {
    transform: rotate(0deg) scale(1.05);
}

/* Sections */
.section {
    padding: var(--spacing-xl) 0;
}

.section-title {
    text-align: center;
    font-size: 3rem;
    margin-bottom: var(--spacing-lg);
    font-weight: 800;
}

.section-text {
    max-width: 700px;
    margin: 0 auto 1.5rem;
    text-align: center;
    font-size: 1.15rem;
    color: var(--color-gray-600);
    line-height: 1.8;
}

/* Features Grid */
.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
}

.feature-card {
    background-color: var(--color-white);
    padding: var(--spacing-md);
    border: 1px solid var(--color-gray-100);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-hover);
    border-color: var(--color-black);
}

.feature-title {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
    font-weight: 700;
}

.feature-text {
    color: var(--color-gray-600);
}

/* Testimonials Grid */
.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
}

.testimonial-card {
    background-color: var(--color-white);
    padding: 2.5rem;
    border: 1px solid var(--color-gray-200);
    position: relative;
}

.testimonial-text {
    font-style: italic;
    color: var(--color-gray-800);
    margin-bottom: 2rem;
    font-size: 1.1rem;
}

.testimonial-author {
    font-weight: 700;
    font-family: var(--font-heading);
    text-transform: uppercase;
    font-size: 0.9rem;
    letter-spacing: 1px;
}

/* FAQ List */
.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    margin-bottom: 1.5rem;
    border-bottom: 1px solid var(--color-gray-200);
    padding-bottom: 1.5rem;
}

.faq-question {
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
    cursor: pointer;
    font-weight: 600;
}

.faq-answer {
    color: var(--color-gray-600);
}

/* Footer */
.main-footer {
    background-color: var(--color-black);
    color: var(--color-white);
    padding: var(--spacing-xl) 0 var(--spacing-md);
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.footer-heading {
    color: var(--color-white);
    font-size: 1.2rem;
    margin-bottom: 1.5rem;
    padding-bottom: 0.5rem;
    display: inline-block;
}

.footer-text,
.footer-text a {
    color: var(--color-gray-600);
    margin-bottom: 0.5rem;
    font-size: 0.95rem;
    transition: color 0.3s;
}

.footer-nav li {
    margin-bottom: 0.8rem;
}

.footer-nav a {
    color: var(--color-gray-600);
}

.footer-nav a:hover,
.footer-text a:hover {
    color: var(--color-white);
}

.impressum-text {
    color: var(--color-gray-600);
    font-size: 0.85rem;
    line-height: 1.5;
}

.ad-notification-footer {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: var(--spacing-md);
    margin: 0 var(--spacing-sm) var(--spacing-md);
    text-align: center;
    color: var(--color-gray-600);
    font-size: 0.75rem;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.footer-bottom {
    text-align: center;
    color: var(--color-gray-800);
    /* Dark gray text on black */
    font-size: 0.8rem;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    padding-top: var(--spacing-sm);
    margin-top: var(--spacing-md);
}

/* Cookie Popup */
.cookie-popup {
    position: fixed;
    bottom: 20px;
    left: 20px;
    /* Moved to left for variation */
    background-color: var(--color-black);
    padding: 1.5rem;
    max-width: 350px;
    z-index: 10000;
    display: none;
    color: white;
}

.cookie-content p {
    margin-top: 0;
    margin-bottom: 1.5rem;
    font-size: 0.9rem;
    color: var(--color-gray-200);
}

.cookie-buttons {
    display: flex;
    gap: 1rem;
}

.btn-cookie {
    flex: 1;
    padding: 0.7rem;
    border: 1px solid var(--color-white);
    background: transparent;
    color: var(--color-white);
    cursor: pointer;
    font-weight: 700;
    text-transform: uppercase;
    font-size: 0.75rem;
    transition: all 0.2s;
}

.btn-accept {
    background-color: var(--color-white);
    color: var(--color-black);
}

.btn-reject:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

/* Media Queries */
@media (max-width: 768px) {
    .header-container {
        padding: 0 1rem;
    }

    .desktop-nav {
        display: none;
    }

    .hamburger-menu {
        display: flex;
    }

    .hero-container {
        grid-template-columns: 1fr;
        padding-top: 0;
        text-align: center;
        gap: var(--spacing-md);
    }

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

    .hero-image {
        width: 100%;
        transform: rotate(-5deg);
        margin-bottom: 2rem;
    }

    .hero-image-wrapper {
        order: -1;
    }

    .features-grid,
    .testimonials-grid,
    .footer-grid {
        grid-template-columns: 1fr;
    }
}