/* Global Styles & Typography */
body {
    background-color: #000;
    color: #f5f5f7;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol";
    margin: 0;
    font-size: 17px;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3 {
    font-weight: 600;
    color: #f5f5f7;
}

h1 { font-size: 56px; margin: 0; }
h2 { font-size: 40px; }
h3 { font-size: 24px; margin-top: 40px; }

a {
    color: #2997ff;
    text-decoration: none;
}
a:hover {
    text-decoration: underline;
}

/* Header & Navigation */
header {
    background: rgba(29, 29, 31, 0.72);
    backdrop-filter: saturate(180%) blur(20px);
    -webkit-backdrop-filter: saturate(180%) blur(20px);
    position: sticky;
    top: 0;
    width: 100%;
    z-index: 1000;
    border-bottom: 1px solid #333;
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1024px;
    margin: 0 auto;
    padding: 0 22px;
    height: 48px;
}

.nav-logo {
    font-size: 17px;
    font-weight: 600;
    color: #f5f5f7;
}
.nav-logo:hover { text-decoration: none; }

.nav-links a {
    color: #d2d2d7;
    font-size: 12px;
    margin-left: 20px;
    transition: color 0.3s ease;
}
.nav-links a:hover {
    color: #fff;
    text-decoration: none;
}

.nav-button {
    background-color: #0071e3;
    color: #fff;
    padding: 4px 11px;
    border-radius: 12px;
    font-size: 12px;
}
.nav-button:hover {
    background-color: #0077ed;
    color: #fff;
}

/* Main Content & Sections */
main {
    max-width: 980px;
    margin: 0 auto;
    padding: 0 22px;
}

.first-screen-container {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    min-height: calc(100vh - 48px); /* Full height minus nav bar */
    text-align: center;
}

.hero-section {
    text-align: center;
    padding: 20px 0 0; /* Adjusted padding */
}

.hero-section .availability {
    font-size: 21px;
    color: #86868b;
    margin-top: 10px;
}

.content-section {
    padding: 60px 0;
    border-bottom: 1px solid #333;
}
.content-section:last-child {
    border-bottom: none;
}

.section-title {
    text-align: center;
    margin-bottom: 40px;
}

/* Article Styles */
article {
    max-width: 700px;
    margin: 0 auto;
    text-align: left;
}
.author-info {
    text-align: center;
    color: #86868b;
    font-size: 14px;
    margin-top: -30px;
    margin-bottom: 30px;
}
.article-image {
    width: 100%;
    border-radius: 18px;
    margin: 20px 0;
}

blockquote {
    border-left: 3px solid #0071e3;
    padding-left: 20px;
    margin: 20px 0;
    font-style: italic;
    color: #a1a1a6;
}

/* Video Section */
.video-section {
    padding: 20px 0 60px; /* Adjusted padding */
    width: 100%;
}
.video-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
}

.video-grid--single {
    max-width: 560px;
    margin: 0 auto;
}

.video-container {
    position: relative;
    padding-bottom: 56.25%; /* 16:9 aspect ratio */
    height: 0;
    overflow: hidden;
    border-radius: 18px;
}
.video-container iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

/* Features List */
.features-list {
    list-style: none;
    padding: 0;
    max-width: 700px;
    margin: 0 auto;
}
.features-list li {
    padding: 15px 0;
    border-bottom: 1px solid #222;
}
.features-list li:last-child {
    border-bottom: none;
}
.features-list strong {
    color: #f5f5f7;
}

/* Tech Specs */
.specs-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}
.spec-item {
    background: #1a1a1c;
    padding: 20px;
    border-radius: 18px;
}
.spec-item h3 {
    margin-top: 0;
    font-size: 21px;
}

/* Footer */
footer {
    background-color: #1a1a1c;
    color: #86868b;
    padding: 40px 22px;
    font-size: 12px;
}
.footer-content {
    max-width: 980px;
    margin: 0 auto;
    text-align: center;
}
.language-selector {
    margin: 20px 0;
    padding-bottom: 20px;
    border-bottom: 1px solid #333;
}
.language-selector a {
    color: #d2d2d7;
    margin: 0 10px;
    transition: color 0.3s ease;
}
.language-selector a:hover,
.language-selector a.active {
    color: #fff;
    text-decoration: none;
}
.footer-links {
    margin: 20px 0;
}
.footer-links a {
    color: #d2d2d7;
    margin: 0 10px;
}
.copyright {
    color: #6e6e73;
    margin-top: 20px;
}

/* Responsive Design */
@media (max-width: 768px) {
    h1 { font-size: 48px; }
    h2 { font-size: 32px; }
    .hero-section { padding: 60px 0; }
    .nav-links a:not(.nav-button) { display: none; }
}