/* ==========================================================================
   DESIGN SYSTEM & VARIABLES
   ========================================================================== */
:root {
    /* Color Palette */
    --color-bg-deep: #0a0e1a;       /* Deep Midnight Blue background */
    --color-bg-card: #131a30;       /* Lighter Midnight Blue for cards */
    --color-primary: #1c2541;       /* Dark Blue */
    --color-primary-light: #2a3454; /* Slate Blue */
    
    --color-gold: #f59e0b;          /* Bright Amber Gold for CTAs */
    --color-gold-hover: #d97706;    /* Darker Gold for hover states */
    --color-gold-dark: #b45309;     /* Deep Gold for active states */
    --color-gold-light: rgba(245, 158, 11, 0.15); /* Translucent Gold for backgrounds */
    
    --color-white: #ffffff;
    --color-text-light: #e2e8f0;    /* Helles Grau für Fließtext */
    --color-text-muted: #94a3b8;    /* Muted Slate Grey */
    --color-warning: #ef4444;       /* Warning Red */
    
    /* Typography */
    --font-heading: 'Montserrat', sans-serif;
    --font-body: 'Inter', sans-serif;
    --font-alt: 'Blinker', sans-serif;
    --font-accent: 'Oswald', sans-serif;
    
    /* Layout */
    --container-width: 1140px;
    --border-radius-sm: 6px;
    --border-radius-md: 12px;
    --border-radius-lg: 24px;
    
    /* Transitions */
    --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ==========================================================================
   BASE STYLES & RESET
   ========================================================================== */
* {
    margin: 0;
    padding: 0;
    box-box: border-box;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    background-color: var(--color-bg-deep);
    color: var(--color-text-light);
    font-family: var(--font-body);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

.container {
    width: 100%;
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 24px;
}

/* Typography elements */
h1, h2, h3, h4 {
    font-family: var(--font-heading);
    color: var(--color-white);
    font-weight: 700;
    line-height: 1.3;
}

a {
    color: var(--color-gold);
    text-decoration: none;
    transition: var(--transition-smooth);
}

a:hover {
    color: var(--color-gold-hover);
}

/* Helper Utilities */
.text-center { text-align: center; }
.text-gold { color: var(--color-gold) !important; }
.align-left { margin-left: 0 !important; }
.divider {
    height: 4px;
    width: 80px;
    background: linear-gradient(90deg, var(--color-gold), transparent);
    margin: 16px auto 0 auto;
    border-radius: 2px;
}

/* ==========================================================================
   WARNING TOP BAR
   ========================================================================== */
.top-warning-bar {
    background-color: #7f1d1d; /* Very deep red */
    border-bottom: 2px solid var(--color-warning);
    padding: 10px 0;
    font-size: 0.875rem;
    font-family: var(--font-alt);
    font-weight: 600;
    letter-spacing: 0.5px;
    position: relative;
    z-index: 100;
}

.top-warning-bar .container {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
}

.warning-badge {
    background-color: var(--color-warning);
    color: var(--color-white);
    padding: 3px 8px;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 800;
    display: inline-flex;
    align-items: center;
    gap: 5px;
    animation: flash 2s infinite;
}

@keyframes flash {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.6; }
}

.warning-text {
    color: #fecaca;
}

/* ==========================================================================
   HERO SECTION
   ========================================================================== */
.hero-section {
    background: radial-gradient(circle at 70% 30%, var(--color-primary-light) 0%, var(--color-bg-deep) 70%);
    padding: 60px 0 80px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.hero-grid {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 48px;
    align-items: center;
}

.brand-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 30px;
}

.logo-icon {
    font-size: 2.2rem;
    color: var(--color-gold);
}

.logo-text {
    font-family: var(--font-heading);
    font-size: 1.8rem;
    font-weight: 800;
    color: var(--color-white);
    letter-spacing: -0.5px;
}

.logo-text .highlight {
    color: var(--color-gold);
}

.hero-title {
    font-size: 2.5rem;
    font-weight: 800;
    letter-spacing: -0.5px;
    margin-bottom: 24px;
    line-height: 1.2;
}

.badge-accent {
    display: block;
    width: max-content;
    background: var(--color-gold-light);
    color: var(--color-gold);
    border: 1px solid var(--color-gold);
    font-size: 0.75rem;
    font-weight: 800;
    text-transform: uppercase;
    padding: 4px 12px;
    border-radius: 50px;
    margin-bottom: 16px;
    font-family: var(--font-alt);
    letter-spacing: 1px;
}

.hero-subtitle {
    font-size: 1.125rem;
    color: var(--color-text-muted);
    margin-bottom: 30px;
    max-width: 620px;
}

.benefits-quick-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 35px;
}

.benefit-item {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1rem;
}

.benefit-item i {
    font-size: 1.2rem;
}

/* Opt-in Form Styling */
.optin-form {
    max-width: 550px;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.input-group {
    position: relative;
    width: 100%;
}

.input-icon {
    position: absolute;
    left: 20px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--color-text-muted);
    font-size: 1.1rem;
    transition: var(--transition-smooth);
}

.optin-form input[type="email"] {
    width: 100%;
    padding: 18px 20px 18px 52px;
    border-radius: var(--border-radius-md);
    background-color: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.15);
    color: var(--color-white);
    font-size: 1rem;
    font-family: var(--font-body);
    transition: var(--transition-smooth);
}

.optin-form input[type="email"]:focus {
    outline: none;
    border-color: var(--color-gold);
    background-color: rgba(255, 255, 255, 0.07);
    box-shadow: 0 0 0 4px rgba(245, 158, 11, 0.15);
}

.optin-form input[type="email"]:focus + .input-icon {
    color: var(--color-gold);
}

/* Buttons */
.btn-cta {
    background: linear-gradient(135deg, var(--color-gold) 0%, var(--color-gold-hover) 100%);
    color: var(--color-bg-deep);
    border: none;
    border-radius: var(--border-radius-md);
    padding: 18px 32px;
    font-size: 1.1rem;
    font-weight: 700;
    font-family: var(--font-heading);
    cursor: pointer;
    display: inline-flex;
    justify-content: center;
    align-items: center;
    gap: 12px;
    transition: var(--transition-smooth);
    box-shadow: 0 10px 25px -5px rgba(245, 158, 11, 0.4);
}

.btn-cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 15px 30px -5px rgba(245, 158, 11, 0.6);
}

.btn-cta:active {
    transform: translateY(0);
}

.btn-pulse {
    animation: btnPulse 2s infinite;
}

@keyframes btnPulse {
    0% { box-shadow: 0 0 0 0 rgba(245, 158, 11, 0.5); }
    70% { box-shadow: 0 0 0 15px rgba(245, 158, 11, 0); }
    100% { box-shadow: 0 0 0 0 rgba(245, 158, 11, 0); }
}

.form-privacy-note {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.775rem;
    color: var(--color-text-muted);
}

.form-privacy-note i {
    font-size: 0.9rem;
    color: #10b981; /* Green check shield */
}

/* Right Column Visual */
.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
}

.book-container {
    position: relative;
    z-index: 5;
    animation: floatBook 6s ease-in-out infinite;
}

@keyframes floatBook {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-15px); }
}

.book-image {
    max-width: 100%;
    height: auto;
    width: 420px;
    transition: var(--transition-smooth);
    filter: drop-shadow(0 20px 30px rgba(0, 0, 0, 0.6));
}

.book-container:hover .book-image {
    transform: rotateY(-5deg) scale(1.02);
    filter: drop-shadow(0 25px 35px rgba(0, 0, 0, 0.7));
}

.book-glow {
    position: absolute;
    width: 140%;
    height: 140%;
    background: radial-gradient(circle, rgba(245, 158, 11, 0.08) 0%, transparent 60%);
    top: -20%;
    left: -20%;
    z-index: -1;
    pointer-events: none;
}

/* ==========================================================================
   TRUST BADGE BAR
   ========================================================================== */
.trust-bar {
    background-color: var(--color-bg-card);
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    padding: 30px 0;
}

.trust-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.trust-item {
    display: flex;
    align-items: center;
    gap: 16px;
}

.trust-icon {
    font-size: 2rem;
    color: var(--color-gold);
    flex-shrink: 0;
}

.trust-text h4 {
    font-size: 0.95rem;
    font-weight: 700;
    margin-bottom: 2px;
}

.trust-text p {
    font-size: 0.775rem;
    color: var(--color-text-muted);
}

/* ==========================================================================
   DETAILS SECTION (Grid cards)
   ========================================================================== */
.details-section {
    padding: 100px 0;
    background: linear-gradient(180deg, var(--color-bg-deep) 0%, #0d1222 100%);
}

.section-header {
    margin-bottom: 60px;
}

.section-tagline {
    font-family: var(--font-accent);
    color: var(--color-gold);
    font-size: 0.9rem;
    letter-spacing: 2px;
    font-weight: 600;
}

.section-title {
    font-size: 2.2rem;
    margin-top: 8px;
    font-weight: 800;
}

.details-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

.detail-card {
    background-color: var(--color-bg-card);
    border: 1px solid rgba(255, 255, 255, 0.03);
    border-radius: var(--border-radius-md);
    padding: 40px;
    transition: var(--transition-smooth);
    position: relative;
    overflow: hidden;
}

.detail-card::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    height: 100%;
    width: 4px;
    background: var(--color-gold);
    opacity: 0;
    transition: var(--transition-smooth);
}

.detail-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px -15px rgba(0, 0, 0, 0.5);
    border-color: rgba(245, 158, 11, 0.15);
}

.detail-card:hover::before {
    opacity: 1;
}

.card-icon-wrapper {
    background: rgba(255, 255, 255, 0.03);
    color: var(--color-gold);
    width: 60px;
    height: 60px;
    border-radius: var(--border-radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.6rem;
    margin-bottom: 24px;
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: var(--transition-smooth);
}

.detail-card:hover .card-icon-wrapper {
    background: var(--color-gold);
    color: var(--color-bg-deep);
    transform: rotate(5deg);
}

.detail-card h3 {
    font-size: 1.3rem;
    margin-bottom: 12px;
    font-weight: 700;
}

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

/* ==========================================================================
   SPECS & FAST FACTS
   ========================================================================== */
.specs-section {
    padding: 40px 0 100px 0;
}

.specs-box {
    background-color: var(--color-bg-card);
    border: 1px solid rgba(245, 158, 11, 0.2);
    border-radius: var(--border-radius-md);
    padding: 50px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 40px;
    position: relative;
    box-shadow: 0 20px 40px -20px rgba(245, 158, 11, 0.15);
}

.specs-content {
    flex: 1;
}

.specs-content h3 {
    font-size: 1.6rem;
    margin-bottom: 24px;
    font-weight: 700;
    color: var(--color-white);
}

.specs-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

.spec-item {
    display: flex;
    flex-direction: column;
    gap: 4px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    padding-bottom: 12px;
}

.spec-label {
    font-size: 0.8rem;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.spec-val {
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--color-white);
}

.specs-badge {
    background: linear-gradient(135deg, var(--color-gold) 0%, var(--color-gold-hover) 100%);
    width: 140px;
    height: 140px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 10px 25px -5px rgba(245, 158, 11, 0.4);
    flex-shrink: 0;
    transform: rotate(-10deg);
}

.badge-inner {
    text-align: center;
    color: var(--color-bg-deep);
    display: flex;
    flex-direction: column;
}

.free-text {
    font-family: var(--font-accent);
    font-size: 2.2rem;
    font-weight: 800;
    line-height: 1;
}

.free-sub {
    font-size: 0.75rem;
    text-transform: uppercase;
    font-weight: 800;
    letter-spacing: 1px;
}

/* ==========================================================================
   EDITORIAL COPY SECTION
   ========================================================================== */
.copy-section {
    padding: 100px 0;
    background-color: #0b0f1d;
    border-top: 1px solid rgba(255, 255, 255, 0.03);
    border-bottom: 1px solid rgba(255, 255, 255, 0.03);
}

.copy-container {
    max-width: 750px;
}

.copy-title {
    font-size: 2rem;
    font-weight: 800;
    margin-bottom: 16px;
    text-align: center;
    line-height: 1.25;
}

.copy-subtitle {
    font-family: var(--font-alt);
    font-size: 1.25rem;
    font-weight: 400;
    color: var(--color-gold);
    margin-bottom: 40px;
    text-align: center;
}

.copy-container p {
    font-size: 1.05rem;
    line-height: 1.8;
    color: var(--color-text-light);
    margin-bottom: 24px;
}

.copy-container strong {
    color: var(--color-white);
}

blockquote {
    border-left: 4px solid var(--color-gold);
    padding: 15px 0 15px 30px;
    margin: 40px 0;
    font-family: var(--font-heading);
    font-size: 1.3rem;
    font-weight: 600;
    font-style: italic;
    color: var(--color-white);
    line-height: 1.5;
    background: rgba(255, 255, 255, 0.02);
    border-radius: 0 var(--border-radius-sm) var(--border-radius-sm) 0;
}

.security-steps {
    margin: 35px 0 45px 25px;
}

.security-steps li {
    font-size: 1.05rem;
    line-height: 1.7;
    margin-bottom: 20px;
    color: var(--color-text-light);
}

/* Call to action inside copy */
.cta-banner {
    background-color: var(--color-bg-card);
    border: 1px dashed rgba(245, 158, 11, 0.4);
    border-radius: var(--border-radius-md);
    padding: 40px;
    text-align: center;
    margin-top: 60px;
}

.cta-banner h3 {
    font-size: 1.4rem;
    margin-bottom: 12px;
}

.cta-banner p {
    font-size: 0.95rem;
    color: var(--color-text-muted);
    margin-bottom: 24px;
}

.cta-banner .btn-cta {
    width: 100%;
    max-width: 500px;
}

/* ==========================================================================
   ABOUT THE INITIATIVE
   ========================================================================== */
.about-section {
    padding: 100px 0;
}

.about-grid {
    display: grid;
    grid-template-columns: 0.8fr 1.2fr;
    gap: 60px;
    align-items: center;
}

.about-img-box {
    background: linear-gradient(135deg, var(--color-primary-light) 0%, var(--color-bg-card) 100%);
    border: 1px solid rgba(255, 255, 255, 0.05);
    height: 300px;
    border-radius: var(--border-radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
}

.about-huge-icon {
    font-size: 6rem;
    color: var(--color-gold);
    opacity: 0.8;
}

.about-content h2 {
    font-size: 2.2rem;
    margin-top: 8px;
    font-weight: 800;
}

.about-content p {
    color: var(--color-text-muted);
    margin-top: 20px;
    font-size: 1rem;
    line-height: 1.7;
}

/* ==========================================================================
   BOTTOM CTA SECTION
   ========================================================================== */
.bottom-cta-section {
    padding: 100px 0;
    background: radial-gradient(circle at 50% 50%, var(--color-primary) 0%, var(--color-bg-deep) 80%);
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.bottom-cta-section h2 {
    font-size: 2.2rem;
    font-weight: 800;
    margin-bottom: 12px;
}

.cta-subtitle {
    font-size: 1.1rem;
    color: var(--color-text-muted);
    margin-bottom: 40px;
}

.bottom-form-wrapper {
    max-width: 550px;
    margin: 0 auto;
}

.bottom-form-wrapper .optin-form {
    max-width: 100%;
}

/* ==========================================================================
   FOOTER
   ========================================================================== */
.main-footer {
    background-color: #060912;
    padding: 60px 0 40px 0;
    border-top: 1px solid rgba(255, 255, 255, 0.03);
    font-size: 0.85rem;
    color: var(--color-text-muted);
}

.footer-brand {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--color-white);
    margin-bottom: 24px;
}

.footer-brand .highlight {
    color: var(--color-gold);
}

.footer-disclaimer {
    max-width: 800px;
    margin: 0 auto 30px auto;
    text-align: center;
    line-height: 1.7;
    background-color: rgba(255, 255, 255, 0.01);
    padding: 20px;
    border-radius: var(--border-radius-sm);
    border: 1px solid rgba(255, 255, 255, 0.03);
}

.footer-links {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 15px;
    margin-bottom: 24px;
}

.footer-links a {
    color: var(--color-text-muted);
}

.footer-links a:hover {
    color: var(--color-white);
}

.sep {
    color: rgba(255, 255, 255, 0.1);
}

.copyright {
    text-align: center;
    font-size: 0.75rem;
}

/* ==========================================================================
   SUCCESS MODAL
   ========================================================================== */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background-color: rgba(6, 9, 18, 0.85);
    backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    pointer-events: none;
    transition: var(--transition-smooth);
}

.modal-overlay.active {
    opacity: 1;
    pointer-events: auto;
}

.modal-box {
    background-color: var(--color-bg-card);
    border: 1px solid rgba(245, 158, 11, 0.2);
    border-radius: var(--border-radius-lg);
    width: 100%;
    max-width: 620px;
    padding: 50px 40px 40px 40px;
    position: relative;
    box-shadow: 0 30px 60px -15px rgba(0, 0, 0, 0.8);
    transform: translateY(40px);
    transition: var(--transition-smooth);
}

.modal-overlay.active .modal-box {
    transform: translateY(0);
}

.modal-close {
    position: absolute;
    right: 20px;
    top: 20px;
    background: transparent;
    border: none;
    color: var(--color-text-muted);
    font-size: 1.4rem;
    cursor: pointer;
    transition: var(--transition-smooth);
}

.modal-close:hover {
    color: var(--color-white);
}

.modal-header {
    text-align: center;
    margin-bottom: 30px;
}

.success-icon {
    font-size: 3.5rem;
    color: #10b981;
    margin-bottom: 16px;
}

.modal-header h2 {
    font-size: 1.8rem;
    font-weight: 800;
}

.modal-body > p {
    text-align: center;
    font-size: 1.05rem;
    color: var(--color-text-light);
    margin-bottom: 35px;
}

/* Bonus Recommendation Box */
.bonus-box {
    background-color: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: var(--border-radius-md);
    padding: 30px;
    position: relative;
}

.bonus-tag {
    position: absolute;
    top: -12px;
    left: 30px;
    background-color: var(--color-gold);
    color: var(--color-bg-deep);
    font-size: 0.7rem;
    font-weight: 800;
    padding: 4px 12px;
    border-radius: 50px;
    font-family: var(--font-alt);
    letter-spacing: 0.5px;
}

.bonus-box h3 {
    font-size: 1.25rem;
    margin-bottom: 12px;
    color: var(--color-gold);
    margin-top: 5px;
}

.bonus-box p {
    font-size: 0.9rem;
    color: var(--color-text-muted);
    line-height: 1.6;
    margin-bottom: 16px;
}

.bonus-box .btn-gold {
    width: 100%;
    margin-top: 10px;
}

.btn-gold {
    background-color: var(--color-gold);
    color: var(--color-bg-deep);
}

.btn-gold:hover {
    background-color: var(--color-white);
    color: var(--color-bg-deep);
    box-shadow: 0 10px 25px -5px rgba(255, 255, 255, 0.2);
}

/* ==========================================================================
   RESPONSIVE LAYOUTS (Media Queries)
   ========================================================================== */
@media (max-width: 991px) {
    /* Hero */
    .hero-grid {
        grid-template-columns: 1fr;
        gap: 40px;
        text-align: center;
    }
    
    .brand-logo {
        justify-content: center;
    }
    
    .hero-title {
        font-size: 2.2rem;
    }
    
    .badge-accent {
        margin-left: auto;
        margin-right: auto;
    }
    
    .hero-subtitle {
        margin-left: auto;
        margin-right: auto;
    }
    
    .benefits-quick-list {
        align-items: center;
    }
    
    .optin-form {
        margin-left: auto;
        margin-right: auto;
    }
    
    /* Trust Bar */
    .trust-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 30px;
    }
    
    /* Details (What's Inside) */
    .details-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    /* Specs Box */
    .specs-box {
        flex-direction: column;
        text-align: center;
        padding: 40px 30px;
    }
    
    .specs-grid {
        grid-template-columns: 1fr;
    }
    
    .specs-badge {
        transform: rotate(0);
    }
    
    /* About Us */
    .about-grid {
        grid-template-columns: 1fr;
        gap: 40px;
        text-align: center;
    }
    
    .about-content .divider {
        margin-left: auto;
        margin-right: auto;
    }
}

@media (max-width: 767px) {
    html {
        font-size: 15px;
    }
    
    .hero-title {
        font-size: 1.8rem;
    }
    
    .hero-section {
        padding: 40px 0 60px 0;
    }
    
    /* Trust Bar */
    .trust-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    /* Specs */
    .specs-box {
        padding: 30px 20px;
    }
    
    /* Copy Section */
    .copy-section {
        padding: 60px 0;
    }
    
    blockquote {
        font-size: 1.15rem;
        padding-left: 20px;
    }
    
    .cta-banner {
        padding: 30px 20px;
    }
    
    /* Modal */
    .modal-box {
        padding: 40px 20px 30px 20px;
        border-radius: var(--border-radius-md);
        margin: 0 15px;
    }
    
    .bonus-box {
        padding: 20px;
    }
}

/* ==========================================================================
   THEME TOGGLE BUTTON
   ========================================================================== */
.theme-toggle-btn {
    position: fixed;
    top: 20px;
    right: 20px;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background-color: var(--color-bg-card);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--color-gold);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 1000;
    box-shadow: 0 4px 12px rgba(0,0,0,0.3);
    transition: var(--transition-smooth);
    font-size: 1.2rem;
}

.theme-toggle-btn:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 16px rgba(0,0,0,0.4);
}

/* ==========================================================================
   LIGHT MODE OVERRIDES
   ========================================================================== */
body.light-mode {
    --color-bg-deep: #f8fafc;       /* Bright Slate/White background */
    --color-bg-card: #ffffff;       /* Pure white for cards */
    --color-primary: #f1f5f9;       /* Light grey background for sections */
    --color-primary-light: #e2e8f0; /* Lighter grey */
    --color-text-light: #1e293b;    /* Dark slate/navy for text */
    --color-text-muted: #64748b;    /* Slate grey for muted text */
    --color-white: #0f172a;         /* Dark navy for headings */
}

/* Light mode specific element adjustments */
body.light-mode .theme-toggle-btn {
    background-color: #ffffff;
    border: 1px solid #cbd5e1;
    color: #475569;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

body.light-mode .theme-toggle-btn:hover {
    box-shadow: 0 6px 16px rgba(0,0,0,0.15);
}

body.light-mode .hero-section {
    background: radial-gradient(circle at 70% 30%, #e2e8f0 0%, #f8fafc 70%);
}

body.light-mode .brand-logo .logo-text {
    color: #0f172a;
}

body.light-mode .badge-accent {
    background: rgba(217, 119, 6, 0.1);
    border-color: #d97706;
}

body.light-mode .optin-form input[type="email"] {
    background-color: #ffffff;
    border: 1px solid #cbd5e1;
    color: #0f172a;
}

body.light-mode .optin-form input[type="email"]:focus {
    background-color: #ffffff;
    border-color: var(--color-gold);
    box-shadow: 0 0 0 4px rgba(245, 158, 11, 0.2);
}

body.light-mode .book-image {
    filter: drop-shadow(0 15px 25px rgba(0, 0, 0, 0.25));
}

body.light-mode .book-container:hover .book-image {
    filter: drop-shadow(0 20px 30px rgba(0, 0, 0, 0.3));
}

body.light-mode .detail-card {
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
    border: 1px solid #e2e8f0;
}

body.light-mode .detail-card:hover {
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
    border-color: rgba(245, 158, 11, 0.3);
}

body.light-mode .card-icon-wrapper {
    background: #f1f5f9;
    border: 1px solid #e2e8f0;
}

body.light-mode .card-icon-wrapper i {
    color: #d97706;
}

body.light-mode .detail-card:hover .card-icon-wrapper {
    background: var(--color-gold);
    color: #ffffff;
}

body.light-mode .specs-box {
    border-color: #cbd5e1;
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.05);
}

body.light-mode .spec-item {
    border-bottom: 1px solid #e2e8f0;
}

body.light-mode .copy-section {
    background-color: #f1f5f9;
    border-color: #e2e8f0;
}

body.light-mode blockquote {
    background-color: #e2e8f0;
    color: #0f172a;
}

body.light-mode .cta-banner {
    background-color: #ffffff;
    border-color: #cbd5e1;
}

body.light-mode .about-section {
    background-color: #f8fafc;
}

body.light-mode .about-img-box {
    background: linear-gradient(135deg, #e2e8f0 0%, #ffffff 100%);
    border: 1px solid #cbd5e1;
}

body.light-mode .main-footer {
    background-color: #0f172a;
    color: #94a3b8;
}

body.light-mode .main-footer .footer-brand {
    color: #ffffff;
}

body.light-mode .main-footer .footer-disclaimer {
    background-color: rgba(255, 255, 255, 0.03);
    border-color: rgba(255, 255, 255, 0.05);
}

body.light-mode .main-footer .footer-links a {
    color: #94a3b8;
}

body.light-mode .main-footer .footer-links a:hover {
    color: #ffffff;
}

body.light-mode .modal-box {
    background-color: #ffffff;
    border-color: #e2e8f0;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
}

body.light-mode .bonus-box {
    background-color: #f8fafc;
    border-color: #e2e8f0;
}