/* ==========================================================================
   SEO / AEO Articles & Case Studies Styles (Glassmorphism + Dark Mode)
   ========================================================================== */

:root {
    --page-accent: #6366f1;
    --page-accent-glow: rgba(99, 102, 241, 0.25);
    --page-accent-gradient: linear-gradient(135deg, #6366f1, #4f46e5);
}

body {
    background-color: var(--bg-dark);
    color: var(--text-light);
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    overflow-x: hidden;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Header & Nav */
header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: hsla(240, 20%, 8%, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--glass-border);
    transition: background 0.3s ease;
}

nav {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
}

.logo img {
    height: 36px;
    width: auto;
}

.logo-text {
    font-family: 'Outfit', sans-serif;
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--text-light);
    letter-spacing: -0.5px;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.nav-link {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 500;
    transition: color var(--transition-fast);
}

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

.cta-login {
    background: var(--page-accent-gradient);
    color: #ffffff !important;
    padding: 0.6rem 1.4rem;
    border-radius: var(--radius-md);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.95rem;
    transition: all var(--transition-normal);
    box-shadow: 0 4px 15px var(--page-accent-glow);
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.cta-login:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px var(--page-accent-glow);
    filter: brightness(1.1);
}

/* Background Animation Elements */
.bg-animation {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: -1;
    pointer-events: none;
    background: radial-gradient(circle at 20% 30%, hsla(var(--primary-hue), 85%, 65%, 0.08) 0%, transparent 60%),
                radial-gradient(circle at 80% 70%, hsla(var(--secondary-hue), 80%, 60%, 0.06) 0%, transparent 60%);
}

/* Container */
.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* Hero Section */
.seo-hero {
    padding: 150px 0 60px;
    position: relative;
    text-align: center;
}

.badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.4rem 1rem;
    border-radius: 9999px;
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 1px;
    text-transform: uppercase;
    background: hsla(0, 0%, 100%, 0.05);
    border: 1px solid var(--page-accent-glow);
    color: var(--page-accent);
    margin-bottom: var(--spacing-md);
    backdrop-filter: blur(8px);
}

.hero-title {
    font-size: clamp(2.2rem, 5.5vw, 4rem);
    font-weight: 800;
    margin-bottom: var(--spacing-md);
    letter-spacing: -1.5px;
    font-family: 'Outfit', sans-serif;
    line-height: 1.15;
}

.gradient-text {
    background: linear-gradient(135deg, #ffffff 40%, var(--page-accent) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-muted);
    max-width: 780px;
    margin: 0 auto var(--spacing-xl);
    line-height: 1.6;
}

.cta-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.6rem;
    padding: 0.85rem 1.8rem;
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 1rem;
    text-decoration: none;
    transition: all var(--transition-normal);
    cursor: pointer;
}

.btn-primary {
    background: var(--page-accent-gradient);
    color: #ffffff;
    border: none;
    box-shadow: 0 8px 25px var(--page-accent-glow);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 30px var(--page-accent-glow);
    filter: brightness(1.1);
}

.btn-secondary {
    background: hsla(0, 0%, 100%, 0.05);
    border: 1px solid var(--glass-border);
    color: var(--text-light);
    backdrop-filter: blur(10px);
}

.btn-secondary:hover {
    background: hsla(0, 0%, 100%, 0.1);
    border-color: var(--page-accent);
    color: #ffffff;
    transform: translateY(-2px);
}

/* Content & Card Grids */
.content-section {
    padding: 60px 0;
}

.premium-glass {
    background: hsla(240, 20%, 12%, 0.6);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-xl);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.benefit-card {
    padding: var(--spacing-xl);
}

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

.benefit-item {
    padding: var(--spacing-xl);
    transition: all var(--transition-normal);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    background: hsla(240, 20%, 10%, 0.5);
    display: flex;
    flex-direction: column;
}

.benefit-item:hover {
    border-color: var(--page-accent);
    transform: translateY(-6px);
    box-shadow: 0 15px 35px var(--page-accent-glow);
}

.icon-circle {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: var(--page-accent-gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-md);
    box-shadow: 0 6px 15px var(--page-accent-glow);
}

.icon-circle img {
    width: 28px;
    height: 28px;
    filter: brightness(0) invert(1);
}

.benefit-item h3 {
    font-family: 'Outfit', sans-serif;
    font-size: 1.35rem;
    margin-bottom: var(--spacing-sm);
    color: var(--text-light);
    font-weight: 700;
}

.benefit-item p {
    color: var(--text-muted);
    line-height: 1.6;
    font-size: 0.95rem;
}

/* Banners */
.case-study-banner {
    margin-top: 60px;
    padding: var(--spacing-xl);
    border-left: 4px solid var(--page-accent);
    background: hsla(240, 20%, 12%, 0.6);
    border-radius: 0 var(--radius-lg) var(--radius-lg) 0;
    backdrop-filter: blur(12px);
    border-top: 1px solid var(--glass-border);
    border-right: 1px solid var(--glass-border);
    border-bottom: 1px solid var(--glass-border);
}

.section-tag {
    font-size: 0.85rem;
    font-weight: 700;
    letter-spacing: 1px;
    text-transform: uppercase;
    color: var(--page-accent);
    margin-bottom: 0.5rem;
}

/* FAQ Section */
.faq-section {
    padding: 80px 0;
    margin: 40px 0;
    border-top: 1px solid var(--glass-border);
    border-bottom: 1px solid var(--glass-border);
    background: hsla(0, 0%, 0%, 0.2);
}

.faq-grid {
    max-width: 900px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.faq-item {
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    border: 1px solid var(--glass-border);
    background: hsla(240, 20%, 10%, 0.6);
    backdrop-filter: blur(10px);
    transition: all var(--transition-fast);
}

.faq-item:hover {
    border-color: var(--page-accent-glow);
}

.faq-item h3 {
    font-family: 'Outfit', sans-serif;
    font-size: 1.2rem;
    color: var(--text-light);
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.faq-item p {
    color: var(--text-muted);
    line-height: 1.6;
    font-size: 0.95rem;
}

/* Footer */
footer {
    margin-top: auto;
    padding: 3rem 0;
    border-top: 1px solid var(--glass-border);
    background: hsla(240, 25%, 5%, 0.8);
    backdrop-filter: blur(10px);
    text-align: center;
}

footer p {
    color: var(--text-muted);
    font-size: 0.9rem;
}

footer a {
    color: var(--page-accent);
    text-decoration: none;
    transition: opacity var(--transition-fast);
}

footer a:hover {
    opacity: 0.8;
    text-decoration: underline;
}

/* Animations */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Responsive */
@media (max-width: 768px) {
    nav {
        padding: 1rem;
    }
    
    .nav-links .nav-link {
        display: none;
    }

    .seo-hero {
        padding: 120px 0 40px;
    }

    .hero-title {
        font-size: 2.2rem;
    }

    .hero-subtitle {
        font-size: 1.05rem;
    }

    .cta-buttons {
        flex-direction: column;
    }

    .btn {
        width: 100%;
    }
}