/* Premium Academic Palette & Dark Mode Variables */
:root {
    --primary-dark: #0B2447;
    --primary-light: #19376D;
    --accent-gold: #F59E0B;
    --accent-gold-hover: #D97706;
    --text-main: #1E293B;
    --text-light: #64748B;
    --bg-white: rgba(255, 255, 255, 0.85); /* Glassmorphism base */
    --bg-solid: #FFFFFF;
    --bg-gray: #F8FAFC;
    --border-color: rgba(226, 232, 240, 0.8);
    --glass-blur: blur(16px);
    --shadow-color: rgba(0, 0, 0, 0.06);
    --cta-bg: #0F172A;
    --cta-text: #FFFFFF;
}

[data-theme="dark"] {
    --primary-dark: #E2E8F0;
    --primary-light: #94A3B8;
    --accent-gold: #F59E0B;
    --accent-gold-hover: #FCD34D;
    --text-main: #F8FAFC;
    --text-light: #CBD5E1;
    --bg-white: rgba(15, 23, 42, 0.85);
    --bg-solid: #0F172A;
    --bg-gray: #020617;
    --border-color: rgba(51, 65, 85, 0.8);
    --shadow-color: rgba(0, 0, 0, 0.5);
    --cta-bg: #1E293B;
    --cta-text: #F8FAFC;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', sans-serif;
}

body {
    background-color: var(--bg-gray);
    color: var(--text-main);
    transition: background-color 0.3s ease, color 0.3s ease;
}

/* --- Top SEO Notification Bar --- */
.top-seo-bar {
    background-color: #0B2447; /* Always dark for contrast */
    color: #FFFFFF;
    width: 100%;
}

.top-seo-bar-inner {
    max-width: 1400px;
    margin: 0 auto;
    padding: 10px 40px;
    font-size: 12px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    overflow: hidden;
}

.top-seo-bar .seo-keywords {
    display: flex;
    align-items: center;
    gap: 16px;
    font-weight: 500;
    letter-spacing: 0.3px;
}

.top-seo-bar .seo-keywords span {
    display: flex;
    align-items: center;
    gap: 6px;
    white-space: nowrap;
}

.top-seo-bar .trust-signals {
    display: flex;
    align-items: center;
    gap: 16px;
}

.top-seo-bar .trust-signals a {
    color: #FFFFFF;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 6px;
    font-weight: 600;
    white-space: nowrap;
    transition: color 0.2s;
}

.trust-signals a:hover {
    color: var(--accent-gold);
}

/* HEADER WRAPPER (Glassmorphism) */
.header-wrapper {
    background-color: var(--bg-white);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    box-shadow: 0 4px 30px var(--shadow-color);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 1000;
    width: 100%;
    transition: background-color 0.3s ease, border-color 0.3s ease;
}

/* MAIN HEADER */
.main-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 40px;
    height: 90px;
    box-sizing: border-box;
}

.logo-container {
    display: flex;
    align-items: center;
    text-decoration: none;
    gap: 16px;
    flex-shrink: 0;
}

.logo-img {
    height: 55px;
    width: 55px;
    flex-shrink: 0;
    transition: transform 0.3s ease;
}

.logo-container:hover .logo-img {
    transform: translateY(-2px);
}

.logo-text {
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.logo-text .logo-title {
    font-size: 20px;
    font-weight: 800;
    letter-spacing: -0.5px;
    line-height: 1.1;
    color: var(--primary-dark);
    text-transform: uppercase;
    white-space: nowrap;
    transition: color 0.3s ease;
}

.logo-text span {
    font-size: 11px;
    font-weight: 700;
    color: var(--accent-gold);
    letter-spacing: 1.5px;
    text-transform: uppercase;
}

/* Navigation Links */
.nav-links {
    display: flex;
    gap: 20px;
    align-items: center;
    margin-left: auto;
    margin-right: 30px;
}

.nav-links > a,
.nav-dropdown > a {
    color: var(--text-main);
    text-decoration: none;
    font-size: 14px;
    font-weight: 600;
    transition: color 0.2s;
    position: relative;
    cursor: pointer;
    padding: 40px 0px;
    display: inline-block;
    white-space: nowrap;
}

.nav-links > a:hover,
.nav-dropdown > a:hover {
    color: var(--primary-light);
}

/* Dropdown styling */
.nav-dropdown {
    position: relative;
}

.nav-dropdown-content {
    display: none;
    position: absolute;
    top: 100%;
    left: -20px;
    background-color: var(--bg-solid);
    min-width: 300px;
    box-shadow: 0 20px 40px var(--shadow-color);
    border-radius: 12px;
    padding: 12px 0;
    z-index: 1001;
    margin-top: -5px;
    border: 1px solid var(--border-color);
}

.nav-dropdown-content.mega-menu {
    left: -350px;
    width: 900px;
    padding: 24px 32px;
    display: none;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
}

.nav-dropdown:hover .nav-dropdown-content {
    display: block;
}

.nav-dropdown:hover .nav-dropdown-content.mega-menu {
    display: grid;
}

.mega-menu-column {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.mega-menu-column h3 {
    font-size: 12px;
    text-transform: uppercase;
    color: var(--text-light);
    letter-spacing: 1px;
    margin-bottom: 8px;
    padding-left: 14px;
}

.nav-dropdown-content a {
    color: var(--text-main);
    padding: 8px 14px;
    display: flex;
    align-items: center;
    font-size: 14px;
    font-weight: 500;
    text-decoration: none;
    transition: all 0.2s;
}

.nav-dropdown-content.mega-menu a::before {
    content: '●';
    color: var(--text-main);
    font-size: 10px;
    margin-right: 8px;
    transition: color 0.2s;
}

.nav-dropdown-content a:hover {
    color: var(--primary-dark);
    transform: translateX(4px);
}

.nav-dropdown-content.mega-menu a:hover::before {
    color: var(--accent-gold);
}

.nav-dropdown-content:not(.mega-menu) a {
    border-bottom: 1px solid var(--border-color);
    padding: 12px 24px;
}

.nav-dropdown-content:not(.mega-menu) a:last-child {
    border-bottom: none;
}

.nav-dropdown-content:not(.mega-menu) a:hover {
    background-color: var(--bg-gray);
    padding-left: 28px;
    transform: none;
}

/* CTAs & Dark Mode Toggle */
.header-ctas {
    display: flex;
    align-items: center;
    gap: 15px;
}

.dark-mode-toggle {
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text-main);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 8px;
    border-radius: 50%;
    transition: background-color 0.3s;
}

.dark-mode-toggle:hover {
    background-color: var(--border-color);
}

.btn-solid {
    background-color: var(--accent-gold);
    color: #FFFFFF;
    padding: 10px 20px;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 700;
    text-decoration: none;
    transition: all 0.3s;
    cursor: pointer;
    border: none;
    box-shadow: 0 4px 12px rgba(245, 158, 11, 0.25);
    white-space: nowrap;
}

.btn-solid:hover {
    background-color: var(--accent-gold-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(245, 158, 11, 0.5);
}

/* Mobile Menu Base Styles */
.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    color: var(--primary-dark);
}

.mobile-menu-overlay {
    position: fixed;
    top: 0;
    right: -100%;
    width: 300px;
    max-width: 100%;
    height: 100vh;
    background: var(--bg-solid);
    box-shadow: -5px 0 15px var(--shadow-color);
    z-index: 9999;
    transition: right 0.3s ease;
    display: flex;
    flex-direction: column;
    padding: 40px 24px;
}

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

.mobile-menu-close {
    position: absolute;
    top: 20px;
    right: 24px;
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
    color: var(--text-main);
}

.mobile-menu-content {
    display: flex;
    flex-direction: column;
    gap: 20px;
    margin-top: 30px;
    overflow-y: auto;
}

.mobile-menu-content a {
    text-decoration: none;
    color: var(--text-main);
    font-weight: 600;
    font-size: 18px;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 10px;
    display: block;
}

.mobile-menu-content .mobile-accordion-btn {
    background: none;
    border: none;
    width: 100%;
    text-align: left;
    color: var(--text-main);
    font-weight: 600;
    font-size: 18px;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 10px;
    padding-left: 0;
    padding-top: 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
}

.mobile-menu-content .mobile-accordion-content {
    display: none;
    padding-left: 15px;
    padding-top: 10px;
    flex-direction: column;
    gap: 12px;
}

.mobile-menu-content .mobile-accordion-content.active {
    display: flex;
}

.mobile-menu-content .mobile-accordion-content a {
    font-size: 15px;
    font-weight: 500;
    border-bottom: none;
    padding-bottom: 0;
    color: var(--text-light);
}

@media (max-width: 1350px) {
    .nav-links { gap: 15px; margin-right: 20px; }
    .nav-links > a, .nav-dropdown > a { font-size: 14px; }
    .main-header { padding: 0 20px; }
    .top-seo-bar-inner { padding: 10px 20px; font-size: 11px; }
    .logo-text .logo-title { font-size: 20px; }
}

@media (max-width: 1150px) {
    .top-seo-bar { display: none; }
    .nav-links { display: none; }
    .header-ctas { display: none; }
    .mobile-menu-toggle { display: block; }
    .main-header { padding: 0 20px; height: 70px; }
    .logo-text .logo-title { font-size: 16px; }
    .logo-text span { font-size: 9px; }
    .logo-img { height: 45px; width: 45px; }
}

/* WhatsApp Floating Button */
.whatsapp-futuristic {
    position: fixed;
    bottom: 25px;
    right: 25px;
    z-index: 9999;
    display: flex;
    flex-direction: row-reverse;
    align-items: center;
    text-decoration: none;
    font-family: 'Inter', sans-serif;
}
.wa-glow-ring {
    position: absolute;
    width: 60px;
    height: 60px;
    background: rgba(37, 211, 102, 0.6);
    border-radius: 50%;
    z-index: -1;
    animation: wa-pulse 2s infinite;
}
@keyframes wa-pulse {
    0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(37, 211, 102, 0.7); }
    70% { transform: scale(1); box-shadow: 0 0 0 15px rgba(37, 211, 102, 0); }
    100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(37, 211, 102, 0); }
}
.wa-icon-container {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #25D366, #128C7E);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 8px 25px rgba(37, 211, 102, 0.4);
    position: relative;
    z-index: 1;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.whatsapp-futuristic:hover .wa-icon-container {
    transform: scale(1.1) rotate(5deg);
    box-shadow: 0 12px 30px rgba(37, 211, 102, 0.6);
}
.wa-tooltip {
    background: var(--bg-solid);
    color: var(--text-main);
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 14px;
    font-weight: 600;
    margin-right: 15px;
    opacity: 0;
    transform: translateX(20px);
    transition: opacity 0.3s ease, transform 0.3s ease;
    box-shadow: 0 4px 15px var(--shadow-color);
    border: 1px solid var(--border-color);
    pointer-events: none;
    white-space: nowrap;
}
.whatsapp-futuristic:hover .wa-tooltip {
    opacity: 1;
    transform: translateX(0);
}


/* --- FOOTER STYLES --- */

        :root {
            /* Premium Academic Palette matching the header */
            --primary-dark: #0B2447;
            --primary-light: #19376D;
            --accent-gold: #F59E0B;
            --accent-gold-hover: #D97706;
            --text-main: #1E293B;
            --text-light: #64748B;
            --text-footer: #94A3B8;
            --bg-white: #FFFFFF;
            --border-color: rgba(255, 255, 255, 0.1);
        }

        body {
            margin: 0;
            font-family: 'Inter', sans-serif;
            background-color: #F8FAFC;
        }

        
        
        /* ------------------------------------- */
        /* ULTRA-PREMIUM FOOTER WRAPPER */
        /* ------------------------------------- */
        .footer-wrapper {
            background: linear-gradient(180deg, #0B2447 0%, #040D1A 100%);
            color: #FFFFFF;
            margin-top: 100px;
            font-family: 'Inter', sans-serif;
            position: relative;
            overflow: hidden;
            border-top: 2px solid transparent;
            background-clip: padding-box;
        }

        .footer-wrapper::before {
            content: '';
            position: absolute;
            top: 0; left: 0; right: 0; height: 3px;
            background: linear-gradient(90deg, #F59E0B, #EF4444, #3B82F6, #F59E0B);
            background-size: 200% 100%;
            animation: gradientMove 6s linear infinite;
        }

        @keyframes gradientMove {
            0% { background-position: 100% 0; }
            100% { background-position: -100% 0; }
        }

        .footer-inner {
            max-width: 1400px;
            margin: 0 auto;
            padding: 80px 40px 50px;
            display: grid;
            grid-template-columns: 2.5fr 2fr 2fr 2.5fr;
            gap: 50px;
            position: relative;
            z-index: 2;
        }

        /* ------------------------------------- */
        /* TYPOGRAPHY */
        /* ------------------------------------- */
        .footer-heading {
            font-size: 17px;
            font-weight: 800;
            margin-bottom: 30px;
            color: #FFFFFF;
            letter-spacing: 0.5px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .footer-heading::before {
            content: '';
            display: block;
            width: 8px;
            height: 8px;
            background: #F59E0B;
            border-radius: 50%;
            box-shadow: 0 0 10px rgba(245, 158, 11, 0.6);
        }

        .footer-text {
            font-size: 14px;
            color: #94A3B8;
            line-height: 1.7;
            margin-bottom: 25px;
        }

        /* ------------------------------------- */
        /* COLUMN 1: BRANDING & GLASSMORPHISM */
        /* ------------------------------------- */
        .footer-brand {
            display: flex;
            align-items: center;
            gap: 15px;
            margin-bottom: 25px;
            text-decoration: none;
        }
        .footer-logo-img {
            width: 50px;
            height: 50px;
            filter: drop-shadow(0 4px 6px rgba(0,0,0,0.3));
        }
        .footer-brand-text h2 {
            margin: 0;
            color: #FFFFFF;
            font-size: 20px;
            font-weight: 900;
            line-height: 1.1;
            letter-spacing: -0.5px;
        }
        .footer-brand-text span {
            color: #F59E0B;
            font-size: 11px;
            font-weight: 800;
            letter-spacing: 1.5px;
            text-transform: uppercase;
        }

        .premium-glass-box {
            background: rgba(255, 255, 255, 0.03);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border: 1px solid rgba(255, 255, 255, 0.05);
            border-left: 3px solid #F59E0B;
            padding: 20px;
            border-radius: 12px;
            margin-bottom: 25px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.2);
            transition: transform 0.3s, background 0.3s;
        }

        .premium-glass-box:hover {
            transform: translateY(-3px);
            background: rgba(255, 255, 255, 0.05);
        }

        .glass-box-title {
            margin: 0 0 8px 0;
            font-size: 14px;
            font-weight: 700;
            color: #F59E0B;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .glass-box-text {
            margin: 0;
            font-size: 13px;
            color: #94A3B8;
            line-height: 1.6;
        }

        /* ------------------------------------- */
        /* RICH LISTS & HOVER EFFECTS */
        /* ------------------------------------- */
        .rich-list {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .rich-list a {
            color: #94A3B8;
            text-decoration: none;
            font-size: 14.5px;
            font-weight: 500;
            display: inline-flex;
            align-items: center;
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            position: relative;
        }

        .rich-list a::before {
            content: "›";
            position: absolute;
            left: 0;
            opacity: 0;
            color: #F59E0B;
            font-size: 20px;
            font-weight: bold;
            line-height: 1;
            transform: translateX(-10px);
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        .rich-list a:hover {
            color: #FFFFFF;
            padding-left: 18px;
        }

        .rich-list a:hover::before {
            opacity: 1;
            transform: translateX(0);
        }

        /* ------------------------------------- */
        /* CONTACT CARDS & SOCIALS */
        /* ------------------------------------- */
        .contact-widget {
            display: flex;
            flex-direction: column;
            gap: 18px;
            margin-bottom: 35px;
        }

        .cw-item {
            display: flex;
            align-items: flex-start;
            gap: 15px;
            background: rgba(255, 255, 255, 0.02);
            padding: 12px 15px;
            border-radius: 8px;
            border: 1px solid rgba(255,255,255,0.03);
            transition: background 0.3s;
        }

        .cw-item:hover {
            background: rgba(255, 255, 255, 0.04);
            border-color: rgba(245, 158, 11, 0.3);
        }

        .cw-item svg {
            color: #F59E0B;
            flex-shrink: 0;
            margin-top: 2px;
        }

        .cw-text {
            color: #E2E8F0;
            font-size: 14px;
            line-height: 1.5;
            font-weight: 500;
        }

        .social-dock {
            display: flex;
            gap: 12px;
            margin-bottom: 35px;
        }

        .social-dock-btn {
            width: 42px;
            height: 42px;
            background: rgba(255,255,255,0.05);
            border: 1px solid rgba(255,255,255,0.1);
            border-radius: 10px;
            display: flex;
            justify-content: center;
            align-items: center;
            color: #FFFFFF;
            text-decoration: none;
            transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
        }

        .social-dock-btn:hover {
            background: #F59E0B;
            border-color: #F59E0B;
            transform: translateY(-5px) rotate(5deg);
            box-shadow: 0 8px 15px rgba(245, 158, 11, 0.3);
        }

        .payment-badges {
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
        }

        .pay-badge {
            background: #FFFFFF;
            padding: 6px 12px;
            border-radius: 6px;
            font-size: 11px;
            font-weight: 800;
            box-shadow: 0 4px 6px rgba(0,0,0,0.1);
        }

        /* ------------------------------------- */
        /* BOTTOM COPYRIGHT BAR */
        /* ------------------------------------- */
        .footer-copyright-bar {
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            padding: 25px 40px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            background: rgba(0,0,0,0.2);
            flex-wrap: wrap;
            gap: 20px;
        }

        .copyright-text {
            color: #64748B;
            font-size: 13.5px;
            margin: 0;
        }

        .copyright-text strong {
            color: #94A3B8;
        }

        /* Responsive */
        @media (max-width: 1200px) {
            .footer-inner { grid-template-columns: 1fr 1fr; gap: 60px; }
        }
        @media (max-width: 768px) {
            .footer-inner { grid-template-columns: 1fr; padding: 60px 25px 40px; }
            .footer-copyright-bar { flex-direction: column; text-align: center; }
        }



/* --- FREE SAMPLES INDEX (Card Grid) --- */
.samples-hero {
    text-align: center;
    padding: 80px 20px 40px;
}
.samples-hero h1 {
    font-size: 42px;
    font-weight: 900;
    color: var(--text-main);
    margin-bottom: 15px;
}
.samples-hero p {
    font-size: 16px;
    color: var(--text-light);
    max-width: 600px;
    margin: 0 auto 40px;
}
.samples-filter-pills {
    display: flex;
    justify-content: center;
    gap: 10px;
    flex-wrap: wrap;
    margin-bottom: 50px;
}
.filter-pill {
    padding: 10px 24px;
    border-radius: 50px;
    border: 1px solid var(--border-color);
    background: var(--bg-white);
    color: var(--text-light);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
}
.filter-pill.active {
    background: #0B2447;
    color: #FFF;
    border-color: #0B2447;
}
.filter-more {
    display: flex;
    align-items: center;
    font-size: 14px;
    color: var(--text-main);
    font-weight: 600;
    margin-left: 15px;
}

.samples-grid-new {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(450px, 1fr));
    gap: 30px;
    max-width: 1200px;
    margin: 0 auto 80px;
    padding: 0 20px;
}
.sample-card-new {
    background: var(--bg-white);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 30px;
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
}
.sample-card-new:hover {
    box-shadow: 0 10px 40px var(--shadow-color);
    transform: translateY(-2px);
}
.sample-card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 20px;
}
.sample-icon-wrap {
    width: 48px;
    height: 48px;
    background: rgba(11, 36, 71, 0.1);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #0B2447;
}
.sample-tag-new {
    background: rgba(245, 158, 11, 0.15);
    color: #D97706;
    font-size: 12px;
    font-weight: 700;
    padding: 6px 16px;
    border-radius: 20px;
}
.sample-card-new h3 {
    font-size: 20px;
    font-weight: 800;
    color: var(--text-main);
    margin-bottom: 15px;
    line-height: 1.4;
}
.sample-meta-string {
    font-size: 14px;
    color: var(--text-light);
    margin-bottom: 25px;
    line-height: 1.6;
}
.sample-card-new .btn-view-sample {
    display: inline-flex;
    align-items: center;
    padding: 10px 24px;
    border-radius: 50px;
    border: 1px solid #0B2447;
    color: #0B2447;
    font-weight: 600;
    font-size: 14px;
    text-decoration: none;
    transition: all 0.2s ease;
    align-self: flex-start;
    margin-top: auto;
}
.sample-card-new .btn-view-sample:hover {
    background: #0B2447;
    color: #FFF;
}

/* --- INDIVIDUAL SAMPLE PAGE (Centered Layout) --- */
.sample-content-wrapper {
    max-width: 800px;
    margin: 60px auto 100px;
    padding: 0 20px;
    background: var(--bg-main);
}
.sample-header {
    margin-bottom: 40px;
}
.sample-header h1 {
    font-size: 38px;
    font-weight: 900;
    color: var(--text-main);
    line-height: 1.2;
    margin-bottom: 20px;
}
.toc-dropdown {
    border: 1px solid var(--border-color);
    border-radius: 12px;
    margin-bottom: 40px;
    background: var(--bg-white);
    overflow: hidden;
}
.toc-dropdown summary {
    padding: 20px;
    font-weight: 800;
    font-size: 16px;
    color: var(--text-main);
    cursor: pointer;
    list-style: none;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.toc-dropdown summary::-webkit-details-marker {
    display: none;
}
.toc-dropdown summary::after {
    content: '\25BC';
    font-size: 12px;
    color: var(--text-light);
}
.toc-body {
    padding: 0 20px 20px;
    border-top: 1px solid var(--border-color);
}
.toc-body ul {
    list-style: none;
    padding: 10px 0 0;
    margin: 0;
}
.toc-body li {
    padding: 8px 0;
    font-size: 15px;
    font-weight: 600;
    color: var(--text-main);
}
.sample-content-wrapper p, .sample-content-wrapper li {
    font-size: 16px;
    line-height: 1.8;
    color: var(--text-main);
    margin-bottom: 20px;
}
.sample-content-wrapper h2 {
    font-size: 24px;
    font-weight: 800;
    color: var(--text-main);
    margin: 40px 0 20px;
}
.blue-cta-banner {
    background: linear-gradient(135deg, #0B2447, #19376D);
    border-radius: 16px;
    padding: 40px;
    text-align: center;
    color: #FFF;
    margin: 40px 0;
}
.blue-cta-banner h3 {
    font-size: 24px;
    font-weight: 800;
    margin-bottom: 15px;
    color: #FFF;
}
.blue-cta-banner p {
    font-size: 16px;
    color: rgba(255,255,255,0.9);
    margin-bottom: 30px;
}
.blue-cta-btns {
    display: flex;
    justify-content: center;
    gap: 15px;
    flex-wrap: wrap;
}
.btn-cta-orange {
    background: #F59E0B;
    color: #FFF;
    padding: 14px 28px;
    border-radius: 50px;
    font-weight: 800;
    text-decoration: none;
}
.btn-cta-white {
    background: #FFF;
    color: #0B2447;
    padding: 14px 28px;
    border-radius: 50px;
    font-weight: 800;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}
.sample-nav-buttons {
    display: flex;
    justify-content: space-between;
    margin-top: 60px;
    padding-top: 30px;
    border-top: 1px solid var(--border-color);
}
.sample-nav-btn {
    padding: 12px 24px;
    border-radius: 50px;
    border: 1px solid var(--border-color);
    background: var(--bg-white);
    color: var(--text-main);
    font-weight: 600;
    text-decoration: none;
    font-size: 14px;
}

/* TOC Smooth Animation */
.toc-dropdown { border: 1px solid var(--border-color); border-radius: 8px; margin-bottom: 30px; background: var(--bg-white); overflow: hidden; }
.toc-btn { width: 100%; text-align: left; background: #F8FAFC; border: none; padding: 15px 20px; font-weight: 700; font-size: 16px; cursor: pointer; display: flex; justify-content: space-between; align-items: center; color: var(--text-main); font-family: 'Inter', sans-serif; transition: background 0.3s; }
.toc-btn:hover { background: #F1F5F9; }
.toc-btn:after { content: "▼"; font-size: 12px; transition: transform 0.3s; }
.toc-btn.active:after { transform: rotate(180deg); }
.toc-content { max-height: 0; overflow: hidden; transition: max-height 0.4s ease; background: var(--bg-white); }
.toc-content.expanded { max-height: 1000px; padding-bottom: 15px; }
.toc-content ul { padding-top: 15px; margin-bottom: 0; padding-left: 40px; }
.toc-content li { margin-bottom: 8px; color: var(--text-light); }

/* Premium Custom CTA */
.premium-cta-banner {
    background: linear-gradient(135deg, #0B2447 0%, #0B2447 100%);
    border-radius: 12px;
    padding: 40px;
    text-align: center;
    color: #FFF;
    margin: 50px 0;
    box-shadow: 0 10px 30px rgba(11, 36, 71, 0.2);
}
.premium-cta-banner h3 { font-size: 26px; font-weight: 800; margin-bottom: 15px; }
.premium-cta-banner p { font-size: 16px; color: rgba(255,255,255,0.85); margin-bottom: 30px; }
.btn-cta-gold {
    background: #F59E0B;
    color: #0F172A;
    padding: 14px 28px;
    border-radius: 50px;
    font-weight: 800;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: transform 0.3s, box-shadow 0.3s;
}
.btn-cta-gold:hover { transform: translateY(-2px); box-shadow: 0 8px 20px rgba(245, 158, 11, 0.4); color: #0F172A; }

/* Improved Prev/Next buttons */
.sample-nav-buttons-improved {
    display: flex;
    justify-content: space-between;
    margin-top: 50px;
    padding-top: 30px;
    border-top: 1px solid var(--border-color);
}
.sample-nav-btn {
    display: inline-flex;
    flex-direction: column;
    padding: 15px 25px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    background: var(--bg-white);
    text-decoration: none;
    transition: all 0.3s ease;
    width: 45%;
}
.sample-nav-btn:hover { border-color: #0B2447; box-shadow: 0 5px 15px rgba(11, 36, 71, 0.1); }
.sample-nav-btn small { font-size: 12px; color: var(--text-light); text-transform: uppercase; font-weight: 700; margin-bottom: 5px; }
.sample-nav-btn strong { font-size: 16px; color: #0B2447; font-weight: 800; text-transform: capitalize; }
.sample-nav-btn.prev { text-align: left; }
.sample-nav-btn.next { text-align: right; }

.btn-cta-outline-white {
    background: transparent;
    color: #FFF;
    border: 2px solid rgba(255, 255, 255, 0.4);
    padding: 12px 26px;
    border-radius: 50px;
    font-weight: 800;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    transition: all 0.3s ease;
    margin-left: 15px;
}
.btn-cta-outline-white:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: #FFF;
    transform: translateY(-2px);
}