/* ===== PREMIUM SEO & PERFORMANCE OPTIMIZATIONS ===== */

/* Core Web Vitals Optimization */

/* LCP (Largest Contentful Paint) - Hero section must load fast */
.hero-title {
    font-display: swap;
    contain: layout style paint;
}

.hero-content {
    contain: content;
}

/* CLS (Cumulative Layout Shift) - Reserve space for media */
img {
    display: block;
    width: 100%;
    height: auto;
    aspect-ratio: auto;
}

img[loading="lazy"] {
    background-color: var(--bg-secondary);
}

/* FID (First Input Delay) - Keep interactions responsive */
button, .btn, a, input, textarea, select {
    will-change: transform, background-color, border-color;
    transform: translateZ(0);
}

/* ===== LAZY-LOADING OPTIMIZATION ===== */
.lazy-image {
    opacity: 0;
    transition: opacity 600ms ease-out;
}

.lazy-image.loaded {
    opacity: 1;
}

/* ===== FAQ SECTION STYLING ===== */
.faq-section {
    margin: 56px 0;
}

.faq-item {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    transition: all 400ms ease-out;
    cursor: pointer;
}

.faq-item:hover {
    border-color: rgba(255, 255, 255, 0.12);
    background: var(--bg-tertiary);
}

/* support both h3-based and button-based markup */
.faq-item h3,
.faq-question {
    color: var(--text-primary);
    margin-bottom: 12px;
    font-size: 0.95rem;
    text-transform: none;
    letter-spacing: normal;
}

.faq-question { display: flex; justify-content: space-between; align-items: center; border: none; background: transparent; width: 100%; }

.faq-item p,
.faq-answer {
    color: var(--text-secondary);
    line-height: 1.6;
    font-size: 0.9rem;
} 

/* ===== BREADCRUMB NAVIGATION ===== */
.breadcrumb {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 40px;
    font-size: 0.85rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.breadcrumb a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 200ms ease-in-out;
}

.breadcrumb a:hover {
    color: var(--accent-cyan);
}

.breadcrumb span {
    color: var(--text-muted);
}

/* ===== ARTICLE & SCHEMA STYLING ===== */
article {
    margin-bottom: 96px;
}

article h1 {
    margin-bottom: 24px;
}

article > p {
    margin-bottom: 32px;
}

article h2 {
article h3 {
    margin-top: 40px;
    margin-bottom: 16px;
}

/* ===== HEADING HIERARCHY ===== */
h1 {
    font-size: 3.5rem;
    text-transform: uppercase;
    letter-spacing: 3px;
    line-height: 1.1;
}

h2 {
    font-size: 2rem;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    line-height: 1.2;
}

h3 {
    font-size: 1.3rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

h4 {
    font-size: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.8px;
}

/* ===== LINK STYLING ===== */
a {
    color: inherit;
    text-decoration: none;
    transition: color 200ms ease-in-out;
}

a:hover {
    color: var(--accent-cyan);
}

article a {
    color: var(--accent-cyan);
    text-decoration: underline;
}

article a:hover {
    color: var(--accent-cyan-hover);
}

/* ===== FORM OPTIMIZATION ===== */
form label {
    display: block;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    margin-bottom: 16px;
    font-weight: 600;
}

form input,
form textarea,
form select {
    width: 100%;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 12px 16px;
    margin-bottom: 24px;
    font-size: 0.95rem;
    transition: all 200ms ease-in-out;
    font-family: inherit;
}

form input:focus,
form textarea:focus,
form select:focus {
    outline: none;
    border-color: var(--accent-cyan);
    background: rgba(75, 157, 196, 0.05);
}

form textarea {
    resize: vertical;
    min-height: 150px;
}

/* ===== IMAGE OPTIMIZATION ===== */
.image-container {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    overflow: hidden;
    margin: 40px 0;
    aspect-ratio: 16 / 9;
}

.image-container img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* ===== CARD COMPONENTS ===== */
.card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    padding: 40px;
    transition: all 600ms ease-out;
}

.card:hover {
    border-color: rgba(255, 255, 255, 0.12);
    background: var(--bg-tertiary);
}

.card-title {
    font-size: 1.1rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.card-description {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.8;
}

.card-metadata {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-top: 24px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* ===== BUTTON STYLING ===== */
button, .btn {
    background: none;
    border: 1px solid var(--accent-steel);
    color: var(--text-secondary);
    padding: 12px 32px;
    font-size: 13px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    cursor: pointer;
    transition: all 200ms ease-in-out;
    font-family: inherit;
}

button:hover, .btn:hover {
    border-color: var(--accent-cyan);
    color: var(--accent-cyan);
    background: rgba(75, 157, 196, 0.05);
}

button:active, .btn:active {
    transform: scale(0.98);
}

/* ===== MOBILE OPTIMIZATION ===== */
@media (max-width: 768px) {
    h1 {
        font-size: 2rem;
        letter-spacing: 1.5px;
    }
    
    h2 {
        font-size: 1.4rem;
        letter-spacing: 1px;
    }
    
    h3 {
        font-size: 1.1rem;
        letter-spacing: 0.8px;
    }
    
    .faq-item {
        padding: 24px;
    }
    
    button, .btn {
        padding: 10px 24px;
        font-size: 12px;
    }
}

@media (max-width: 480px) {
    h1 {
        font-size: 1.6rem;
        letter-spacing: 1px;
    }
    
    h2 {
        font-size: 1.2rem;
        letter-spacing: 0.8px;
    }
    
    .faq-item {
        padding: 16px;
        margin-bottom: 32px;
    }
    
    .faq-item h3 {
        font-size: 1rem;
    }
    
    .faq-item p {
        font-size: 0.9rem;
    }
}

/* ===== ACCESSIBILITY ===== */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Focus states for keyboard navigation */
button:focus-visible,
.btn:focus-visible,
a:focus-visible,
input:focus-visible,
textarea:focus-visible {
    outline: 2px solid var(--accent-cyan);
    outline-offset: 2px;
}

/* ===== PRINT OPTIMIZATION ===== */
@media print {
    .header,
    footer,
    .nav-menu,
    button,
    .btn {
        display: none;
    }
    
    body {
        background: white;
        color: black;
    }
    
    a {
        text-decoration: underline;
    }
}
}