/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #FF0000;
    --primary-hover: #CC0000;
    --secondary-color: #282828;
    --text-dark: #0F0F0F;
    --text-gray: #606060;
    --text-light: #AAAAAA;
    --bg-white: #FFFFFF;
    --bg-light: #F9F9F9;
    --bg-gray: #F1F1F1;
    --border-color: #E5E5E5;
    --success-color: #00A86B;
    --gradient-start: #FF0000;
    --gradient-end: #CC0000;
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.12);
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background: var(--bg-white);
    overflow-x: hidden;
    padding-top: 80px; /* Space for fixed header */
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Sticky Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: var(--bg-white);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
    z-index: 1000;
    transition: all 0.3s ease;
}

.header.scrolled {
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 0;
    gap: 32px;
}

.header-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    color: var(--text-dark);
    cursor: pointer;
    transition: transform 0.3s ease;
}

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

.logo-icon {
    width: 36px;
    height: 36px;
    object-fit: contain;
    filter: drop-shadow(0 2px 4px rgba(255, 0, 0, 0.2));
    animation: subtle-bounce 3s ease-in-out infinite;
}

@keyframes subtle-bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-3px); }
}

.logo-text {
    font-family: 'Poppins', sans-serif;
    font-weight: 800;
    font-size: 20px;
    white-space: nowrap;
    background: linear-gradient(135deg, #FF0000 0%, #CC0000 50%, #FF0000 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    background-size: 200% auto;
    animation: shimmer 3s linear infinite;
    filter: drop-shadow(0 1px 2px rgba(0, 0, 0, 0.1));
    letter-spacing: -0.5px;
}

@keyframes shimmer {
    0% { background-position: 0% center; }
    100% { background-position: 200% center; }
}

.header-nav {
    display: flex;
    gap: 32px;
    flex: 1;
    justify-content: center;
}

.nav-link {
    color: var(--text-gray);
    text-decoration: none;
    font-weight: 500;
    font-size: 15px;
    transition: color 0.2s;
    white-space: nowrap;
}

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

.header-actions {
    display: flex;
    align-items: center;
    gap: 16px;
}

.btn-header {
    padding: 10px 24px;
    font-size: 14px;
    white-space: nowrap;
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.mobile-menu-toggle span {
    width: 24px;
    height: 2px;
    background: var(--text-dark);
    transition: all 0.3s;
}

.mobile-menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.mobile-menu-toggle.active span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -6px);
}

/* Language Selector (removed from header) */

/* Hero Section */
.hero {
    padding: 80px 0 80px;
    background: linear-gradient(135deg, #FFFFFF 0%, #F9F9F9 100%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--gradient-start), var(--gradient-end));
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.hero-title {
    font-size: 56px;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 24px;
    color: var(--text-dark);
}

.gradient-text {
    background: linear-gradient(90deg, var(--gradient-start), var(--gradient-end));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 20px;
    color: var(--text-gray);
    margin-bottom: 32px;
    line-height: 1.6;
}

.hero-cta {
    margin-bottom: 32px;
}

.hero-bonus {
    margin-top: 12px;
    font-size: 14px;
    color: var(--text-gray);
    font-weight: 500;
}

.hero-features {
    display: flex;
    gap: 24px;
    flex-wrap: wrap;
}

.hero-feature {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    color: var(--text-gray);
    font-weight: 500;
}

.feature-icon {
    font-size: 20px;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 14px 32px;
    border-radius: 12px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s;
    border: none;
    cursor: pointer;
    font-size: 16px;
}

.btn-primary {
    background: var(--primary-color);
    color: var(--bg-white);
    box-shadow: 0 4px 16px rgba(255, 0, 0, 0.2);
}

.btn-primary:hover {
    background: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(255, 0, 0, 0.3);
}

.btn-large {
    padding: 18px 48px;
    font-size: 18px;
}

/* Mockup Browser */
.mockup-browser {
    background: var(--bg-white);
    border-radius: 16px;
    box-shadow: var(--shadow-lg);
    overflow: hidden;
    animation: float 6s ease-in-out infinite;
}

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

.browser-header {
    background: var(--bg-gray);
    padding: 12px 16px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.browser-dots {
    display: flex;
    gap: 8px;
}

.browser-dots span {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--border-color);
}

.browser-dots span:nth-child(1) { background: #FF5F57; }
.browser-dots span:nth-child(2) { background: #FEBC2E; }
.browser-dots span:nth-child(3) { background: #28C840; }

.browser-url {
    flex: 1;
    background: var(--bg-white);
    padding: 6px 12px;
    border-radius: 6px;
    font-size: 13px;
    color: var(--text-gray);
}

.browser-content {
    padding: 24px;
    background: #F5F5F5;
}

.extension-popup {
    background: var(--bg-white);
    border-radius: 12px;
    padding: 20px;
    box-shadow: var(--shadow-md);
}

.popup-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border-color);
}

.popup-header h3 {
    font-size: 18px;
    font-weight: 700;
}

.balance {
    font-size: 14px;
    font-weight: 600;
    color: var(--success-color);
}

.popup-video-info {
    margin-bottom: 16px;
}

.video-title {
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 4px;
}

.video-meta {
    font-size: 12px;
    color: var(--text-gray);
}

.popup-actions {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-bottom: 16px;
}

.action-btn {
    padding: 12px;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    background: var(--bg-white);
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.2s;
    text-align: left;
}

.action-btn:hover {
    border-color: var(--primary-color);
    background: var(--bg-light);
}

.popup-result {
    background: var(--bg-light);
    padding: 16px;
    border-radius: 8px;
    border-left: 4px solid var(--success-color);
}

.result-badge {
    display: inline-block;
    background: var(--success-color);
    color: var(--bg-white);
    padding: 4px 8px;
    border-radius: 6px;
    font-size: 11px;
    font-weight: 600;
    margin-bottom: 8px;
}

.result-text {
    font-size: 13px;
    color: var(--text-gray);
    line-height: 1.5;
}

/* Section Styles */
section {
    padding: 80px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 64px;
}

.section-header h2 {
    font-size: 42px;
    font-weight: 800;
    margin-bottom: 16px;
    color: var(--text-dark);
}

.section-header p {
    font-size: 18px;
    color: var(--text-gray);
}

/* Features Grid */
.features {
    background: var(--bg-white);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.feature-card {
    background: var(--bg-white);
    padding: 32px;
    border-radius: 16px;
    border: 2px solid var(--border-color);
    transition: all 0.3s;
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-color);
}

.feature-icon-large {
    font-size: 48px;
    margin-bottom: 20px;
}

.feature-card h3 {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 12px;
}

.feature-card p {
    color: var(--text-gray);
    margin-bottom: 20px;
    line-height: 1.6;
}

.feature-list {
    list-style: none;
}

.feature-list li {
    padding: 8px 0;
    padding-left: 24px;
    position: relative;
    color: var(--text-gray);
    font-size: 14px;
}

.feature-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--success-color);
    font-weight: 700;
}

/* Benefits Grid */
.benefits {
    background: var(--bg-light);
}

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.benefit-item {
    text-align: center;
    padding: 32px 24px;
    background: var(--bg-white);
    border-radius: 16px;
    transition: all 0.3s;
}

.benefit-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.benefit-icon {
    font-size: 56px;
    margin-bottom: 20px;
}

.benefit-item h3 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 12px;
}

.benefit-item p {
    color: var(--text-gray);
    line-height: 1.6;
}

/* Use Cases */
.use-cases {
    background: var(--bg-white);
}

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

.use-case-card {
    padding: 32px 24px;
    background: var(--bg-light);
    border-radius: 16px;
    text-align: center;
    transition: all 0.3s;
}

.use-case-card:hover {
    background: var(--bg-white);
    box-shadow: var(--shadow-md);
    transform: translateY(-4px);
}

.use-case-icon {
    font-size: 48px;
    margin-bottom: 16px;
}

.use-case-card h3 {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 12px;
}

.use-case-card p {
    font-size: 14px;
    color: var(--text-gray);
    line-height: 1.6;
}

/* Comparison Table */
.comparison {
    background: var(--bg-light);
}

.comparison-table {
    max-width: 900px;
    margin: 0 auto;
    background: var(--bg-white);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

.comparison-header,
.comparison-row {
    display: grid;
    grid-template-columns: 2fr 1.5fr 1.5fr;
    gap: 16px;
    padding: 20px 24px;
    align-items: center;
}

.comparison-header {
    background: var(--secondary-color);
    color: var(--bg-white);
    font-weight: 700;
}

.comparison-row {
    border-bottom: 1px solid var(--border-color);
}

.comparison-row:last-child {
    border-bottom: none;
}

.comparison-feature {
    font-weight: 600;
}

.comparison-other,
.comparison-us {
    text-align: center;
    font-size: 14px;
}

.positive {
    color: var(--success-color);
    font-size: 20px;
    display: block;
    margin-bottom: 4px;
}

.negative {
    color: var(--primary-color);
    font-size: 20px;
    display: block;
    margin-bottom: 4px;
}

/* Pricing */
.pricing {
    background: var(--bg-white);
}

.pricing-card {
    max-width: 700px;
    margin: 0 auto;
    background: linear-gradient(135deg, var(--bg-white) 0%, var(--bg-light) 100%);
    border-radius: 24px;
    padding: 48px;
    box-shadow: var(--shadow-lg);
    border: 2px solid var(--border-color);
}

.pricing-main {
    text-align: center;
    margin-bottom: 40px;
}

.pricing-rate {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    margin-bottom: 16px;
}

.price {
    font-size: 56px;
    font-weight: 800;
    color: var(--primary-color);
}

.equals {
    font-size: 32px;
    color: var(--text-gray);
}

.tokens {
    font-size: 56px;
    font-weight: 800;
    color: var(--text-dark);
}

.pricing-description {
    color: var(--text-gray);
    font-size: 16px;
}

.pricing-examples {
    display: flex;
    flex-direction: column;
    gap: 16px;
    margin-bottom: 32px;
}

.pricing-example {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 24px;
    background: var(--bg-white);
    border-radius: 12px;
    border: 1px solid var(--border-color);
}

.pricing-example.highlight {
    background: #E8F5E9;
    border-color: var(--success-color);
}

.example-label {
    font-weight: 600;
}

.example-cost {
    color: var(--text-gray);
    font-weight: 500;
}

.pricing-disclaimer {
    text-align: center;
    font-size: 0.85rem;
    color: #6b7280;
    margin-top: 1rem;
    margin-bottom: 0.5rem;
    font-style: italic;
    line-height: 1.5;
}

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

/* How It Works */
.how-it-works {
    background: var(--bg-light);
}

.steps {
    max-width: 800px;
    margin: 0 auto;
}

.step {
    display: flex;
    gap: 32px;
    margin-bottom: 48px;
    align-items: flex-start;
}

.step:last-child {
    margin-bottom: 0;
}

.step-number {
    flex-shrink: 0;
    width: 64px;
    height: 64px;
    background: var(--primary-color);
    color: var(--bg-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    font-weight: 800;
    box-shadow: 0 4px 16px rgba(255, 0, 0, 0.2);
}

.step-content h3 {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 12px;
}

.step-content p {
    color: var(--text-gray);
    line-height: 1.6;
}

/* CTA Section */
.cta {
    background: linear-gradient(135deg, var(--secondary-color) 0%, #1a1a1a 100%);
    color: var(--bg-white);
}

.cta-content {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.cta h2 {
    font-size: 48px;
    font-weight: 800;
    margin-bottom: 20px;
}

.cta-subtitle {
    font-size: 20px;
    color: var(--text-light);
    margin-bottom: 40px;
}

.cta-buttons {
    margin-bottom: 48px;
}

.cta-note {
    margin-top: 16px;
    color: var(--text-light);
    font-size: 14px;
}

.cta-stats {
    display: flex;
    justify-content: center;
    gap: 64px;
    padding-top: 48px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.stat {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 48px;
    font-weight: 800;
    color: var(--primary-color);
    margin-bottom: 8px;
}

.stat-label {
    display: block;
    font-size: 14px;
    color: var(--text-light);
}

/* Footer */
.footer {
    background: var(--text-dark);
    color: var(--bg-white);
    padding: 64px 0 32px;
}

.footer-content {
    display: grid;
    grid-template-columns: 1.5fr 2fr;
    gap: 64px;
    margin-bottom: 48px;
}

.footer-brand h3 {
    font-size: 24px;
    margin-bottom: 12px;
}

.footer-brand p {
    color: var(--text-light);
}

.footer-links {
    display: flex;
    gap: 48px;
    justify-content: space-between;
}

.footer-column h4 {
    font-size: 16px;
    margin-bottom: 16px;
    font-weight: 600;
}

.footer-column ul {
    list-style: none;
}

.footer-column li {
    margin-bottom: 12px;
}

.footer-column a {
    color: var(--text-light);
    text-decoration: none;
    transition: color 0.2s;
}

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

.footer-bottom {
    padding-top: 32px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
    color: var(--text-light);
    font-size: 14px;
}

.footer-copyright {
    margin-bottom: 16px;
}

.brand-name {
    font-family: 'Poppins', sans-serif;
    font-weight: 800;
    background: linear-gradient(135deg, #FF4444 0%, #FF0000 50%, #FF4444 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    background-size: 200% auto;
    animation: shimmer 3s linear infinite;
    filter: drop-shadow(0 1px 3px rgba(255, 0, 0, 0.3));
    letter-spacing: -0.3px;
}

.footer-link {
    color: inherit;
    text-decoration: none;
    transition: opacity 0.2s;
}

.footer-link:hover {
    opacity: 0.8;
}

/* Language Selector in Footer */
.language-selector {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-size: 13px;
}

.lang-label {
    font-size: 16px;
    margin-right: 4px;
}

.lang-btn {
    padding: 0;
    border: none;
    background: transparent;
    color: var(--text-light);
    cursor: pointer;
    font-weight: 400;
    font-size: 13px;
    transition: color 0.2s;
    font-family: inherit;
}

.lang-btn:hover {
    color: var(--bg-white);
}

.lang-btn.active {
    color: var(--bg-white);
    font-weight: 600;
}

.lang-separator {
    color: rgba(255, 255, 255, 0.3);
}

/* Responsive Design */
@media (max-width: 1024px) {
    .hero .container {
        grid-template-columns: 1fr;
        gap: 48px;
    }

    .hero-visual {
        order: -1;
    }

    .features-grid,
    .benefits-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .use-cases-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    body {
        padding-top: 70px;
    }

    .header-content {
        padding: 12px 0;
    }

    .header-nav {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background: var(--bg-white);
        flex-direction: column;
        gap: 0;
        padding: 16px 0;
        box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all 0.3s ease;
    }

    .header-nav.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    .nav-link {
        padding: 12px 24px;
        display: block;
    }

    .header-actions {
        gap: 8px;
    }

    .btn-header {
        display: none;
    }

    .mobile-menu-toggle {
        display: flex;
    }

    .logo-icon {
        width: 32px;
        height: 32px;
    }

    .logo-text {
        font-size: 17px;
    }

    .hero-title {
        font-size: 36px;
    }

    .hero-subtitle {
        font-size: 18px;
    }

    .section-header h2 {
        font-size: 32px;
    }

    .features-grid,
    .benefits-grid,
    .use-cases-grid {
        grid-template-columns: 1fr;
    }

    .comparison-header,
    .comparison-row {
        grid-template-columns: 1fr;
        text-align: left;
    }

    .comparison-other,
    .comparison-us {
        text-align: left;
    }

    .pricing-rate {
        flex-direction: column;
        gap: 8px;
    }

    .price,
    .tokens {
        font-size: 40px;
    }

    .cta h2 {
        font-size: 36px;
    }

    .cta-stats {
        flex-direction: column;
        gap: 32px;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .footer-links {
        flex-direction: column;
        gap: 32px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }

    section {
        padding: 48px 0;
    }

    .hero {
        padding: 80px 0 48px;
    }

    .btn-large {
        padding: 14px 32px;
        font-size: 16px;
    }

    .mockup-browser {
        transform: scale(0.9);
    }
}