:root {
    --bg-dark: #0f1115;
    --text-main: #f8f9fa;
    --text-muted: #a1a1aa;
    
    --primary-color: #6366f1;
    --primary-hover: #4f46e5;
    
    --gold-color: #fbbf24;
    --gold-hover: #f59e0b;
    
    --card-bg: rgba(255, 255, 255, 0.03);
    --card-border: rgba(255, 255, 255, 0.08);
    --card-hover-border: rgba(255, 255, 255, 0.15);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    background-color: var(--bg-dark);
    color: var(--text-main);
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    overflow-x: hidden;
}

h1, h2, h3 {
    font-family: 'Montserrat', sans-serif;
    line-height: 1.2;
}

/* Background grid & glows */
.bg-grid {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background-image: 
        linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
    background-size: 50px 50px;
    z-index: -2;
    pointer-events: none;
}

.bg-glow {
    position: fixed;
    width: 600px;
    height: 600px;
    border-radius: 50%;
    filter: blur(120px);
    z-index: -1;
    opacity: 0.15;
    pointer-events: none;
}

.bg-glow-1 {
    top: -100px;
    left: -100px;
    background: var(--primary-color);
}

.bg-glow-2 {
    bottom: -100px;
    right: -100px;
    background: var(--gold-color);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Hero Section */
.hero {
    padding: 100px 0 60px;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.text-center {
    text-align: center;
}

.badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    padding: 8px 16px;
    border-radius: 100px;
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: 24px;
}

.badge i {
    color: var(--gold-color);
}

.hero h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
    margin-bottom: 20px;
}

.gradient-text {
    background: linear-gradient(135deg, #a855f7, #6366f1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.gradient-text-gold {
    background: linear-gradient(135deg, #fbbf24, #f59e0b);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.subtitle {
    color: var(--text-muted);
    font-size: 1.125rem;
    max-width: 600px;
    margin: 0 auto;
}

/* Split Section */
.split-section {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
    margin-bottom: 100px;
}

@media (max-width: 768px) {
    .split-section {
        grid-template-columns: 1fr;
    }
}

.card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 24px;
    padding: 40px;
    position: relative;
    overflow: hidden;
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
}

.card:hover {
    border-color: var(--card-hover-border);
    transform: translateY(-5px);
}

.card-glow {
    position: absolute;
    width: 200px;
    height: 200px;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0;
    transition: opacity 0.3s ease;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 0;
    pointer-events: none;
}

.card-free:hover .card-glow {
    background: var(--primary-color);
    opacity: 0.1;
}

.card-pro:hover .card-glow {
    background: var(--gold-color);
    opacity: 0.15;
}

.card-content {
    position: relative;
    z-index: 1;
    display: flex;
    flex-direction: column;
    height: 100%;
}

.card-header {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 24px;
}

.icon-wrapper {
    width: 64px;
    height: 64px;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 32px;
}

.free-icon {
    background: rgba(99, 102, 241, 0.1);
    color: var(--primary-color);
}

.pro-icon {
    background: rgba(251, 191, 36, 0.1);
    color: var(--gold-color);
}

.card-desc {
    color: var(--text-muted);
    margin-bottom: 30px;
}

.features-box {
    background: rgba(0, 0, 0, 0.2);
    border-radius: 16px;
    padding: 24px;
    margin-bottom: 30px;
    flex-grow: 1;
}

.features-title {
    font-weight: 600;
    margin-bottom: 16px;
}

.features-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.features-list li {
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--text-main);
}

.card-free .features-list i {
    color: var(--primary-color);
}

.card-pro .features-list i {
    color: var(--gold-color);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    padding: 16px 24px;
    border-radius: 12px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
    gap: 8px;
}

.btn-outline {
    background: transparent;
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: var(--text-main);
}

.btn-outline:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: rgba(255, 255, 255, 0.4);
}

.btn-primary {
    background: var(--gold-color);
    color: #000;
    border: none;
}

.btn-primary:hover {
    background: var(--gold-hover);
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(251, 191, 36, 0.2);
}

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

@keyframes pulse {
    0% { box-shadow: 0 0 0 0 rgba(251, 191, 36, 0.4); }
    70% { box-shadow: 0 0 0 15px rgba(251, 191, 36, 0); }
    100% { box-shadow: 0 0 0 0 rgba(251, 191, 36, 0); }
}

.card-badge {
    position: absolute;
    top: 20px;
    right: 20px;
    background: var(--gold-color);
    color: #000;
    font-size: 0.75rem;
    font-weight: 700;
    padding: 4px 12px;
    border-radius: 100px;
}

/* Arguments Section */
.arguments {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    margin-bottom: 100px;
    padding: 60px;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 32px;
}

@media (max-width: 768px) {
    .arguments {
        grid-template-columns: 1fr;
        padding: 40px 20px;
    }
}

.arguments h2 {
    font-size: clamp(2rem, 3vw, 2.5rem);
    margin-bottom: 24px;
}

.arg-paragraphs p {
    color: var(--text-muted);
    font-size: 1.125rem;
    margin-bottom: 24px;
}

.highlight-box {
    display: flex;
    gap: 16px;
    background: rgba(251, 191, 36, 0.05);
    border-left: 4px solid var(--gold-color);
    padding: 24px;
    border-radius: 0 16px 16px 0;
}

.highlight-box i {
    font-size: 24px;
    color: var(--gold-color);
    flex-shrink: 0;
}

.highlight-box p {
    color: var(--text-main);
    margin: 0;
    font-size: 1rem;
}

.arguments-visual {
    position: relative;
    height: 400px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.orb {
    width: 250px;
    height: 250px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--gold-color), #f97316);
    filter: blur(20px);
    opacity: 0.2;
    animation: float-orb 6s ease-in-out infinite;
}

.floating-icon {
    position: absolute;
    font-size: 100px;
    color: var(--gold-color);
    animation: float 4s ease-in-out infinite;
}

.floating-badge {
    position: absolute;
    background: rgba(20, 22, 28, 0.9);
    border: 1px solid rgba(255, 255, 255, 0.1);
    padding: 12px 20px;
    border-radius: 100px;
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 600;
    backdrop-filter: blur(10px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
}

.floating-badge i {
    color: var(--primary-color);
    font-size: 20px;
}

.badge-1 {
    top: 20%;
    left: 10%;
    animation: float 5s ease-in-out infinite 1s;
}

.badge-2 {
    bottom: 20%;
    right: 10%;
    animation: float 4s ease-in-out infinite 2s;
}

@keyframes float {
    0% { transform: translateY(0); }
    50% { transform: translateY(-20px); }
    100% { transform: translateY(0); }
}

@keyframes float-orb {
    0% { transform: scale(1); }
    50% { transform: scale(1.1); }
    100% { transform: scale(1); }
}

/* Footer */
footer {
    text-align: center;
    padding: 40px 0;
    border-top: 1px solid var(--card-border);
}

.footer-title {
    color: var(--text-muted);
    margin-bottom: 20px;
}

.social-links {
    display: flex;
    justify-content: center;
    gap: 16px;
}

.social-link {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-main);
    font-size: 24px;
    transition: all 0.3s ease;
    text-decoration: none;
}

.social-link:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--primary-color);
    transform: translateY(-3px);
}

/* Animations */
.element-hidden {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

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

/* --- New UI Elements --- */

/* Steps List */
.steps-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 24px;
    margin-top: 40px;
}
.step-card {
    background: rgba(0,0,0,0.3);
    border: 1px solid var(--card-border);
    border-radius: 16px;
    padding: 24px;
    position: relative;
    transition: all 0.3s;
}
.step-card:hover {
    border-color: var(--card-hover-border);
    transform: translateY(-5px);
}
.step-number {
    position: absolute;
    top: -15px;
    left: 20px;
    background: var(--primary-color);
    color: white;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    font-weight: bold;
    font-size: 14px;
}
.step-title {
    font-weight: 700;
    margin: 10px 0;
    color: var(--text-main);
}
.step-desc {
    color: var(--text-muted);
    font-size: 0.95rem;
}

/* Three columns */
.three-cols {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-top: 40px;
    margin-bottom: 80px;
}
@media (max-width: 768px) {
    .three-cols {
        grid-template-columns: 1fr;
    }
}
.col-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 16px;
    padding: 30px;
    text-align: center;
}
.col-icon {
    font-size: 48px;
    color: var(--primary-color);
    margin-bottom: 20px;
}

/* Modules Box */
.modules-box {
    background: rgba(0,0,0,0.2);
    border-radius: 24px;
    padding: 20px 40px;
    margin-bottom: 60px;
}
.module-item {
    border-bottom: 1px solid var(--card-border);
    padding: 20px 0;
    display: flex;
    align-items: center;
    gap: 20px;
}
.module-item:last-child {
    border-bottom: none;
}
.module-item i {
    color: var(--primary-color);
    font-size: 32px;
}

/* FAQ Accordion */
.faq-box {
    display: flex;
    flex-direction: column;
    gap: 16px;
}
details.faq-item {
    background: rgba(0,0,0,0.3);
    border: 1px solid var(--card-border);
    border-radius: 12px;
    overflow: hidden;
}
details.faq-item summary {
    padding: 20px;
    font-weight: 600;
    cursor: pointer;
    list-style: none;
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--text-main);
    transition: background 0.3s;
}
details.faq-item summary::-webkit-details-marker {
    display: none;
}
details.faq-item summary:after {
    content: '+';
    font-size: 24px;
    color: var(--gold-color);
}
details[open].faq-item summary:after {
    content: '-';
}
details.faq-item summary:hover {
    background: rgba(255,255,255,0.05);
}
details.faq-item p {
    padding: 0 20px 20px;
    color: var(--text-muted);
}

/* Pricing Box */
.pricing-box {
    text-align: center;
    padding: 60px 40px;
    background: linear-gradient(135deg, rgba(251, 191, 36, 0.05), rgba(0,0,0,0.5));
    border: 1px solid var(--gold-color);
    border-radius: 24px;
    margin-top: 60px;
    margin-bottom: 60px;
}
.old-price {
    text-decoration: line-through;
    color: var(--text-muted);
    font-size: 1.5rem;
    margin-bottom: 10px;
    white-space: nowrap;
}
.new-price {
    font-size: 4rem;
    font-weight: 800;
    color: var(--gold-color);
    margin-bottom: 30px;
    font-family: 'Montserrat', sans-serif;
    white-space: nowrap;
}

/* Checkerboard Layout */
.checker-wrap {
    display: flex;
    flex-direction: column;
    gap: 80px;
    margin: 60px 0;
}

.checker-row {
    display: flex;
    align-items: center;
    gap: 60px;
}

.checker-row:nth-child(even) {
    flex-direction: row-reverse;
}

.checker-content {
    flex: 1;
}

.checker-image {
    flex: 1;
    overflow: hidden;
    position: relative;
    border-radius: 20px;
    border: 1px solid var(--card-border);
    box-shadow: 0 10px 30px rgba(0,0,0,0.5);
    transition: transform 0.4s ease;
}

.checker-image img {
    width: 100%;
    height: auto;
    display: block;
    object-fit: cover;
}

.checker-image:hover {
    transform: translateY(-5px);
    border-color: var(--gold-color);
}

@media (max-width: 900px) {
    .checker-row {
        flex-direction: column !important;
        gap: 40px;
    }
}

/* Comprehensive Mobile Optimizations */
@media (max-width: 768px) {
    .container {
        padding: 0 15px;
    }
    
    .hero {
        padding: 60px 0 40px;
    }
    
    .card {
        padding: 24px;
        border-radius: 16px;
    }

    .card-badge {
        position: relative;
        top: 0;
        right: 0;
        align-self: flex-start;
        margin-bottom: 20px;
        z-index: 2;
    }

    .icon-wrapper {
        flex-shrink: 0;
        width: 50px;
        height: 50px;
        font-size: 24px;
    }

    .card-header h2 {
        font-size: 1.25rem;
        word-break: break-word;
        overflow-wrap: break-word;
        hyphens: auto;
    }

    .arguments-visual {
        height: 300px;
    }
    
    .floating-icon {
        font-size: 70px;
    }

    .orb {
        width: 150px;
        height: 150px;
    }

    .highlight-box {
        padding: 16px;
        flex-direction: column;
        align-items: flex-start;
        border-radius: 0 0 16px 16px;
        border-left: none;
        border-top: 4px solid var(--gold-color);
        gap: 12px;
    }

    .modules-box {
        padding: 20px;
    }

    .module-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
    }
    
    .module-item i {
        font-size: 28px;
    }

    .pricing-box {
        padding: 40px 20px;
        margin-top: 40px;
        margin-bottom: 40px;
    }

    .new-price {
        font-size: 2.2rem;
    }

    .checker-wrap {
        gap: 50px;
        margin: 40px 0;
    }
    
    .steps-grid {
        grid-template-columns: 1fr;
    }
    
    .social-links {
        flex-wrap: wrap;
    }
}