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

:root {
    --primary-blue: #4A90E2;
    --primary-dark: #357ABD;
    --text-dark: #1a1a1a;
    --text-gray: #666;
    --text-light: #999;
    --bg-white: #ffffff;
    --bg-light: #f8f9fa;
    --bg-gray: #f5f7fa;
    --border-light: #e0e0e0;
    --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
    --shadow-md: 0 4px 16px rgba(0,0,0,0.08);
    --shadow-lg: 0 8px 32px rgba(0,0,0,0.12);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    color: var(--text-dark);
    line-height: 1.6;
    overflow-x: hidden;
}

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

/* Navigation */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-light);
    z-index: 1000;
    transition: all 0.3s ease;
}

.nav-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 72px;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-links a {
    color: var(--text-dark);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

.nav-links a:not(.cta-button):hover {
    color: var(--primary-blue);
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 20px;
    font-weight: 600;
    color: var(--text-dark);
    text-decoration: none;
}

.cta-button {
    padding: 10px 24px;
    background: var(--primary-blue);
    color: white !important;
    text-decoration: none;
    border-radius: 8px;
    font-weight: 500;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.cta-button:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* Hero Section */
.hero {
    padding: 140px 0 80px;
    background: linear-gradient(135deg, #f8f9fa 0%, #ffffff 100%);
    position: relative;
    overflow: hidden;
}

.floating-elements {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    pointer-events: none;
    overflow: hidden;
}

.float-circle {
    position: absolute;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(74, 144, 226, 0.15) 0%, transparent 70%);
}

.circle-1 {
    width: 400px;
    height: 400px;
    top: -100px;
    right: -100px;
    animation: float-1 20s ease-in-out infinite;
}

.circle-2 {
    width: 300px;
    height: 300px;
    bottom: -50px;
    left: -50px;
    animation: float-2 25s ease-in-out infinite;
}

.circle-3 {
    width: 250px;
    height: 250px;
    top: 50%;
    left: 50%;
    animation: float-3 30s ease-in-out infinite;
}

@keyframes float-1 {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(-30px, 40px) scale(1.1); }
    66% { transform: translate(20px, -30px) scale(0.9); }
}

@keyframes float-2 {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(40px, -30px) scale(1.15); }
    66% { transform: translate(-30px, 40px) scale(0.95); }
}

@keyframes float-3 {
    0%, 100% { transform: translate(-50%, -50%) scale(1); }
    50% { transform: translate(-50%, -50%) scale(1.2); }
}

.hero-content {
    max-width: 680px;
    position: relative;
    z-index: 1;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: rgba(74, 144, 226, 0.1);
    color: var(--primary-blue);
    border-radius: 24px;
    font-size: 14px;
    font-weight: 500;
    margin-bottom: 24px;
    animation: badge-pulse 3s ease-in-out infinite;
}

@keyframes badge-pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

.hero-title {
    font-size: clamp(48px, 7vw, 72px);
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: 24px;
    letter-spacing: -0.02em;
}

.gradient-text {
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-dark) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: gradient-shift 3s ease infinite;
    background-size: 200% 200%;
}

@keyframes gradient-shift {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

.hero-description {
    font-size: 20px;
    color: var(--text-gray);
    margin-bottom: 40px;
    line-height: 1.7;
}

.hero-cta {
    display: flex;
    gap: 16px;
    margin-bottom: 48px;
    flex-wrap: wrap;
}

.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 14px 32px;
    font-size: 16px;
    font-weight: 600;
    border-radius: 12px;
    text-decoration: none;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
    border: none;
}

.button-primary {
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-dark) 100%);
    color: white;
    box-shadow: var(--shadow-md);
}

.button-primary:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.button-primary:active {
    transform: translateY(-1px);
}

.button-secondary {
    background: white;
    color: var(--primary-blue);
    border: 2px solid var(--primary-blue);
}

.button-secondary:hover {
    background: var(--primary-blue);
    color: white;
}

.button-large {
    padding: 18px 40px;
    font-size: 18px;
}

.hero-platforms {
    display: flex;
    align-items: center;
    gap: 16px;
    color: var(--text-light);
    font-size: 14px;
}

.platform-icons {
    display: flex;
    gap: 12px;
}

.platform-icons svg {
    color: var(--text-gray);
    transition: all 0.3s ease;
}

.platform-icons svg:hover {
    color: var(--primary-blue);
    transform: scale(1.1);
}

/* Features Section */
.features {
    padding: 120px 0;
    background: white;
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 80px;
}

.section-header h2 {
    font-size: clamp(36px, 5vw, 48px);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 16px;
    letter-spacing: -0.02em;
}

.section-header p {
    font-size: 20px;
    color: var(--text-gray);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 32px;
}

.feature-card {
    background: var(--bg-gray);
    padding: 40px 32px;
    border-radius: 20px;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid transparent;
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-blue), var(--primary-dark));
    transform: scaleX(0);
    transition: transform 0.4s ease;
}

.feature-card:hover::before {
    transform: scaleX(1);
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(74, 144, 226, 0.2);
    background: white;
}

.feature-icon {
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-dark) 100%);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    margin-bottom: 24px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.feature-card:hover .feature-icon {
    transform: scale(1.1) rotate(5deg);
    box-shadow: 0 8px 24px rgba(74, 144, 226, 0.3);
}

.feature-card h3 {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--text-dark);
}

.feature-card > p {
    color: var(--text-gray);
    margin-bottom: 20px;
    line-height: 1.7;
}

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

.feature-list li {
    padding-left: 28px;
    position: relative;
    color: var(--text-gray);
    margin-bottom: 8px;
    font-size: 15px;
}

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

/* Privacy Section */
.privacy-section {
    padding: 120px 0;
    background: linear-gradient(135deg, #f8f9fa 0%, #ffffff 100%);
    position: relative;
    overflow: hidden;
}

.privacy-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.privacy-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: rgba(74, 144, 226, 0.1);
    color: var(--primary-blue);
    border-radius: 24px;
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 24px;
}

.privacy-text h2 {
    font-size: clamp(36px, 5vw, 52px);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 24px;
    letter-spacing: -0.02em;
}

.large-text {
    font-size: 20px;
    color: var(--text-gray);
    margin-bottom: 40px;
    line-height: 1.7;
}

.privacy-features {
    display: flex;
    flex-direction: column;
    gap: 32px;
}

.privacy-feature {
    display: flex;
    gap: 20px;
    transition: transform 0.3s ease;
}

.privacy-feature:hover {
    transform: translateX(10px);
}

.privacy-feature svg {
    flex-shrink: 0;
    color: var(--primary-blue);
}

.privacy-feature h4 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-dark);
}

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

.privacy-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.device-frame {
    width: 400px;
    height: 400px;
    background: linear-gradient(135deg, rgba(74, 144, 226, 0.1) 0%, rgba(53, 122, 189, 0.1) 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.device-frame::before {
    content: '';
    position: absolute;
    inset: 20px;
    border-radius: 50%;
    border: 2px dashed rgba(74, 144, 226, 0.3);
    animation: rotate 20s linear infinite;
}

@keyframes rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.shield-icon {
    animation: float 3s ease-in-out infinite;
}

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

/* Screenshots Section */
.screenshots-section {
    padding: 120px 0;
    background: white;
}

.screenshots-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
    max-width: 1200px;
    margin: 0 auto;
}

.screenshot-card {
    background: var(--bg-gray);
    border-radius: 20px;
    overflow: hidden;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid transparent;
}

.screenshot-card:hover {
    transform: translateY(-10px) scale(1.02);
    box-shadow: var(--shadow-lg);
    border-color: rgba(74, 144, 226, 0.2);
}

.screenshot-card img {
    width: 100%;
    height: auto;
    display: block;
    transition: transform 0.4s ease;
}

.screenshot-card:hover img {
    transform: scale(1.05);
}

.screenshot-caption {
    padding: 24px;
    text-align: center;
}

.screenshot-caption h4 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--text-dark);
}

.screenshot-caption p {
    color: var(--text-gray);
    font-size: 15px;
}

/* How It Works */
.how-it-works {
    padding: 120px 0;
    background: var(--bg-gray);
}

.steps {
    display: grid;
    grid-template-columns: 1fr auto 1fr auto 1fr;
    gap: 40px;
    max-width: 1000px;
    margin: 0 auto;
    align-items: center;
}

.step {
    text-align: center;
    transition: transform 0.3s ease;
}

.step:hover {
    transform: translateY(-5px);
}

.step-number {
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-dark) 100%);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    font-weight: 700;
    margin: 0 auto 24px;
    box-shadow: var(--shadow-md);
    transition: all 0.3s ease;
}

.step:hover .step-number {
    transform: scale(1.15);
    box-shadow: 0 8px 24px rgba(74, 144, 226, 0.4);
}

.step h3 {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--text-dark);
}

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

.step-arrow {
    font-size: 32px;
    color: var(--primary-blue);
    font-weight: 300;
    animation: arrow-bounce 2s ease-in-out infinite;
}

@keyframes arrow-bounce {
    0%, 100% { transform: translateX(0); }
    50% { transform: translateX(10px); }
}

/* FAQ Section */
.faq-section {
    padding: 120px 0;
    background: white;
}

.faq-grid {
    max-width: 900px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.faq-item {
    background: var(--bg-gray);
    border-radius: 16px;
    overflow: hidden;
    transition: all 0.3s ease;
    border: 1px solid transparent;
}

.faq-item:hover {
    border-color: rgba(74, 144, 226, 0.2);
    box-shadow: var(--shadow-sm);
}

.faq-question {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 24px;
    background: none;
    border: none;
    cursor: pointer;
    text-align: left;
    transition: all 0.3s ease;
}

.faq-question h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-dark);
    margin: 0;
}

.faq-question svg {
    flex-shrink: 0;
    color: var(--primary-blue);
    transition: transform 0.3s ease;
    margin-left: 16px;
}

.faq-item.active .faq-question svg {
    transform: rotate(180deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, padding 0.3s ease;
}

.faq-item.active .faq-answer {
    max-height: 500px;
    padding: 0 24px 24px;
}

.faq-answer p {
    color: var(--text-gray);
    line-height: 1.7;
    margin: 0;
}

/* CTA Section */
.cta-section {
    padding: 120px 0;
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-dark) 100%);
    color: white;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.cta-section::before,
.cta-section::after {
    content: '';
    position: absolute;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.05);
    animation: pulse 4s ease-in-out infinite;
}

.cta-section::before {
    width: 600px;
    height: 600px;
    top: -300px;
    left: -200px;
}

.cta-section::after {
    width: 500px;
    height: 500px;
    bottom: -250px;
    right: -150px;
    animation-delay: 2s;
}

@keyframes pulse {
    0%, 100% { opacity: 0.5; transform: scale(1); }
    50% { opacity: 0.8; transform: scale(1.1); }
}

.cta-content {
    position: relative;
    z-index: 1;
    max-width: 700px;
    margin: 0 auto;
}

.cta-content h2 {
    font-size: clamp(36px, 5vw, 52px);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 20px;
}

.cta-content > p {
    font-size: 20px;
    margin-bottom: 40px;
    opacity: 0.95;
    line-height: 1.7;
}

.cta-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    margin-bottom: 24px;
    flex-wrap: wrap;
}

.cta-buttons .button-primary {
    background: white;
    color: var(--primary-blue);
}

.cta-buttons .button-primary:hover {
    background: var(--bg-gray);
    transform: translateY(-3px) scale(1.05);
}

.cta-note {
    font-size: 16px;
    opacity: 0.8;
}

/* Footer */
.footer {
    padding: 80px 0 40px;
    background: var(--text-dark);
    color: white;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 80px;
    margin-bottom: 60px;
}

.footer-brand p {
    color: rgba(255, 255, 255, 0.7);
    margin-top: 16px;
    max-width: 400px;
}

.footer-links {
    display: flex;
    gap: 80px;
}

.footer-column h4 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 20px;
    color: white;
}

.footer-column a {
    display: block;
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    margin-bottom: 12px;
    transition: all 0.3s ease;
}

.footer-column a:hover {
    color: var(--primary-blue);
    transform: translateX(5px);
}

.footer-bottom {
    padding-top: 40px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
    color: rgba(255, 255, 255, 0.6);
}

/* Animations */
.fade-in {
    opacity: 0;
    animation: fadeIn 0.8s ease forwards;
    animation-delay: var(--delay, 0s);
}

.slide-up {
    opacity: 0;
    transform: translateY(40px);
    animation: slideUp 0.8s ease forwards;
    animation-delay: var(--delay, 0s);
}

.slide-in {
    opacity: 0;
    transform: translateX(40px);
    animation: slideIn 0.8s ease forwards;
    animation-delay: 0.3s;
}

@keyframes fadeIn {
    to {
        opacity: 1;
    }
}

@keyframes slideUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideIn {
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* Scroll Progress */
.scroll-progress {
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-blue) 0%, var(--primary-dark) 100%);
    transform-origin: left;
    transform: scaleX(0);
    z-index: 999;
    transition: transform 0.1s ease;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .privacy-content {
        grid-template-columns: 1fr;
        gap: 60px;
    }
    
    .privacy-visual {
        order: -1;
    }
    
    .device-frame {
        width: 300px;
        height: 300px;
    }
}

@media (max-width: 768px) {
    .container {
        padding: 0 20px;
    }
    
    .nav-content {
        height: 64px;
    }
    
    .nav-links {
        gap: 16px;
    }
    
    .nav-links a:not(.cta-button) {
        display: none;
    }
    
    .hero {
        padding: 120px 0 60px;
    }
    
    .hero-title {
        font-size: 42px;
    }
    
    .hero-description {
        font-size: 18px;
    }
    
    .hero-cta {
        flex-direction: column;
    }
    
    .button {
        width: 100%;
        justify-content: center;
    }
    
    .features,
    .privacy-section,
    .how-it-works,
    .faq-section,
    .cta-section {
        padding: 80px 0;
    }
    
    .section-header {
        margin-bottom: 60px;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }
    
    .steps {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .step-arrow {
        transform: rotate(90deg);
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .footer-links {
        gap: 40px;
    }

    .circle-1 {
        width: 250px;
        height: 250px;
    }

    .circle-2 {
        width: 200px;
        height: 200px;
    }

    .circle-3 {
        width: 150px;
        height: 150px;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 36px;
    }
    
    .section-header h2 {
        font-size: 32px;
    }
    
    .feature-card {
        padding: 32px 24px;
    }
    
    .privacy-text h2 {
        font-size: 32px;
    }
    
    .cta-content h2 {
        font-size: 32px;
    }

    .faq-question {
        padding: 20px;
    }

    .faq-question h3 {
        font-size: 16px;
    }
}