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

:root {
    --primary-color: #007AFF;
    --primary-dark: #0051D5;
    --primary-light: #5AC8FA;
    --secondary-color: #5856D6;
    --success-color: #34C759;
    --background: #FFFFFF;
    --background-secondary: #F2F2F7;
    --surface: #FFFFFF;
    --text-primary: #000000;
    --text-secondary: #6E6E73;
    --text-tertiary: #AEAEB2;
    --border: #E5E5EA;
    --shadow: rgba(0, 0, 0, 0.1);
    --shadow-lg: rgba(0, 0, 0, 0.15);
    --gradient-1: linear-gradient(135deg, #007AFF 0%, #5856D6 100%);
    --gradient-2: linear-gradient(135deg, #5AC8FA 0%, #007AFF 100%);
}

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

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

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.8);
    -webkit-backdrop-filter: blur(20px);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    z-index: 1000;
    transition: all 0.3s ease;
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.95);
    box-shadow: 0 2px 20px var(--shadow);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 20px;
    font-weight: 700;
    color: var(--text-primary);
    text-decoration: none;
}

.shield-icon {
    font-size: 28px;
    width: 28px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.shield-icon svg {
    width: 100%;
    height: 100%;
}

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

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    font-size: 15px;
    transition: color 0.2s ease;
}

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

.btn-primary {
    background: var(--primary-color);
    color: white !important;
    padding: 10px 24px;
    border-radius: 12px;
    transition: all 0.2s ease;
}

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 122, 255, 0.3);
}

/* Language Switcher */
.language-switcher {
    display: flex;
    align-items: center;
    gap: 8px;
}

.language-switcher select {
    background: var(--background-secondary);
    color: var(--text-primary);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 6px 12px;
    font-size: 14px;
    font-weight: 500;
    font-family: inherit;
    cursor: pointer;
    transition: all 0.2s ease;
}

.language-switcher select:hover {
    border-color: var(--primary-color);
    background: var(--surface);
}

.language-switcher select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(0, 122, 255, 0.1);
}

.lang-link {
    color: var(--text-secondary) !important;
    font-size: 14px;
    font-weight: 600;
    transition: all 0.2s ease;
}

.lang-link:hover {
    color: var(--primary-color) !important;
}

.lang-link.active {
    color: var(--primary-color) !important;
}

.lang-separator {
    color: var(--text-tertiary);
    font-size: 14px;
}

/* Hero Section */
.hero {
    position: relative;
    padding: 140px 0 100px;
    overflow: hidden;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
    position: relative;
    z-index: 10;
}

.hero-title {
    font-size: 64px;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 24px;
    letter-spacing: -2px;
}

.gradient-text {
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 22px;
    color: var(--text-secondary);
    margin-bottom: 40px;
    line-height: 1.6;
}

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

.btn-hero {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    background: var(--text-primary);
    color: white;
    padding: 16px 32px;
    border-radius: 16px;
    font-size: 17px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
}

.btn-hero:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
}

.btn-secondary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--background-secondary);
    color: var(--text-primary);
    padding: 16px 32px;
    border-radius: 16px;
    font-size: 17px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
}

.btn-secondary:hover {
    background: var(--border);
    transform: translateY(-2px);
}

.hero-stats {
    display: flex;
    gap: 48px;
}

.stat {
    text-align: center;
}

.stat-number {
    font-size: 36px;
    font-weight: 800;
    color: var(--primary-color);
    margin-bottom: 4px;
}

.stat-label {
    font-size: 14px;
    color: var(--text-secondary);
    font-weight: 500;
}

/* Phone Mockup */
.phone-mockup {
    position: relative;
    width: 320px;
    height: 650px;
    background: #1F1F1F;
    border-radius: 50px;
    padding: 14px;
    box-shadow: 0 40px 80px rgba(0, 0, 0, 0.25);
    margin: 0 auto;
}

.phone-screen {
    width: 100%;
    height: 100%;
    background: linear-gradient(180deg, #F8F8F8 0%, #E8E8E8 100%);
    border-radius: 40px;
    overflow: hidden;
}

.app-preview {
    height: 100%;
    display: flex;
    flex-direction: column;
    padding: 20px;
}

.preview-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 40px;
    font-size: 15px;
    font-weight: 600;
}

.status-icons {
    display: flex;
    gap: 8px;
}

.preview-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
}

.shield-large {
    font-size: 120px;
    width: 120px;
    height: 140px;
    margin: 0 auto 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    animation: float 3s ease-in-out infinite;
}

.shield-large svg {
    width: 100%;
    height: 100%;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-10px);
    }
}

.preview-content h3 {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.preview-content p {
    font-size: 15px;
    color: var(--text-secondary);
    margin-bottom: 32px;
}

.blocked-count {
    background: white;
    border-radius: 20px;
    padding: 24px 48px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}

.blocked-count .count {
    display: block;
    font-size: 48px;
    font-weight: 800;
    color: var(--primary-color);
    margin-bottom: 4px;
}

.blocked-count .label {
    display: block;
    font-size: 13px;
    color: var(--text-secondary);
    font-weight: 500;
}

/* Hero Background */
.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    overflow: hidden;
    z-index: 1;
}

.gradient-circle {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.3;
    animation: float 20s ease-in-out infinite;
}

.gradient-circle-1 {
    width: 500px;
    height: 500px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    top: -200px;
    right: -100px;
    animation-delay: 0s;
}

.gradient-circle-2 {
    width: 400px;
    height: 400px;
    background: linear-gradient(135deg, var(--success-color), var(--primary-light));
    bottom: -150px;
    left: -100px;
    animation-delay: 7s;
}

.gradient-circle-3 {
    width: 300px;
    height: 300px;
    background: linear-gradient(135deg, var(--primary-color), var(--success-color));
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation-delay: 14s;
}

/* Features Section */
.features {
    padding: 100px 0;
    background: var(--background-secondary);
}

.section-header {
    text-align: center;
    margin-bottom: 80px;
}

.section-title {
    font-size: 48px;
    font-weight: 800;
    margin-bottom: 16px;
    letter-spacing: -1px;
}

.section-subtitle {
    font-size: 20px;
    color: var(--text-secondary);
}

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

.feature-card {
    background: var(--surface);
    padding: 40px;
    border-radius: 24px;
    border: 1px solid var(--border);
    transition: all 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 40px var(--shadow-lg);
    border-color: var(--primary-color);
}

.feature-icon {
    font-size: 48px;
    margin-bottom: 24px;
}

.feature-title {
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 12px;
}

.feature-description {
    font-size: 16px;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* How It Works Section */
.how-it-works {
    padding: 100px 0;
}

.steps {
    display: flex;
    justify-content: space-between;
    gap: 48px;
    margin-top: 80px;
}

.step {
    flex: 1;
    text-align: center;
}

.step-number {
    width: 72px;
    height: 72px;
    background: var(--gradient-1);
    color: white;
    font-size: 32px;
    font-weight: 800;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 24px;
    box-shadow: 0 8px 24px rgba(0, 122, 255, 0.3);
}

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

.step-description {
    font-size: 16px;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* Privacy Section */
.privacy {
    padding: 100px 0;
    background: linear-gradient(135deg, rgba(0, 122, 255, 0.05) 0%, rgba(52, 199, 89, 0.05) 100%);
}

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

.privacy-description {
    font-size: 18px;
    color: var(--text-secondary);
    margin-bottom: 32px;
    line-height: 1.8;
}

.privacy-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.privacy-list li {
    display: flex;
    align-items: center;
    gap: 16px;
    font-size: 17px;
    color: var(--text-primary);
}

.check-icon {
    width: 28px;
    height: 28px;
    background: var(--success-color);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    font-weight: 700;
    flex-shrink: 0;
}

/* Privacy Shield Animation */
.privacy-visual {
    display: flex;
    align-items: center;
    justify-content: center;
}

.privacy-shield {
    position: relative;
    width: 300px;
    height: 300px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.shield-ring {
    position: absolute;
    border-radius: 50%;
    border: 2px solid var(--success-color);
    opacity: 0.3;
    animation: pulse-ring 3s ease-in-out infinite;
}

.shield-ring-1 {
    width: 200px;
    height: 200px;
}

.shield-ring-2 {
    width: 250px;
    height: 250px;
    animation-delay: 1s;
}

.shield-ring-3 {
    width: 300px;
    height: 300px;
    animation-delay: 2s;
}

@keyframes pulse-ring {
    0%, 100% {
        transform: scale(1);
        opacity: 0.3;
    }
    50% {
        transform: scale(1.1);
        opacity: 0.6;
    }
}

.shield-center {
    font-size: 120px;
    width: 120px;
    height: 140px;
    display: flex;
    align-items: center;
    justify-content: center;
    animation: float 3s ease-in-out infinite;
}

.shield-center svg {
    width: 100%;
    height: 100%;
}

/* Download Section */
.download {
    padding: 100px 0;
    background: var(--text-primary);
    color: white;
}

.download-card {
    text-align: center;
    max-width: 700px;
    margin: 0 auto;
}

.download-title {
    font-size: 42px;
    font-weight: 800;
    margin-bottom: 16px;
    letter-spacing: -1px;
}

.download-subtitle {
    font-size: 18px;
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 40px;
}

.btn-download {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    background: white;
    color: var(--text-primary);
    padding: 18px 40px;
    border-radius: 16px;
    font-size: 18px;
    font-weight: 700;
    text-decoration: none;
    transition: all 0.3s ease;
}

.btn-download:hover {
    transform: scale(1.05);
    box-shadow: 0 12px 40px rgba(255, 255, 255, 0.2);
}

.download-info {
    margin-top: 32px;
    font-size: 15px;
    color: rgba(255, 255, 255, 0.6);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
}

/* Footer */
.footer {
    background: var(--background-secondary);
    padding: 80px 0 40px;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 3fr;
    gap: 80px;
    margin-bottom: 60px;
}

.footer-brand {
    max-width: 350px;
}

.footer-description {
    margin-top: 16px;
    color: var(--text-secondary);
    line-height: 1.7;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
}

.footer-column h4 {
    font-size: 15px;
    font-weight: 700;
    margin-bottom: 16px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.footer-column a {
    display: block;
    color: var(--text-secondary);
    text-decoration: none;
    margin-bottom: 12px;
    transition: color 0.2s ease;
}

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

.footer-bottom {
    text-align: center;
    padding-top: 40px;
    border-top: 1px solid var(--border);
    color: var(--text-secondary);
    font-size: 14px;
}

.footer-bottom p {
    margin-bottom: 8px;
}

.footer-bottom a {
    color: var(--primary-color);
    text-decoration: none;
}

.footer-bottom a:hover {
    text-decoration: underline;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .hero-content {
        grid-template-columns: 1fr;
        gap: 60px;
    }

    .hero-title {
        font-size: 52px;
    }

    .phone-mockup {
        width: 280px;
        height: 570px;
    }

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

    .privacy-content {
        grid-template-columns: 1fr;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 60px;
    }
}

@media (max-width: 768px) {
    .nav-links {
        gap: 20px;
    }

    .nav-links a {
        font-size: 14px;
    }

    .language-switcher {
        gap: 6px;
    }

    .lang-link {
        font-size: 13px;
    }

    .hero {
        padding: 100px 0 60px;
    }

    .hero-title {
        font-size: 40px;
    }

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

    .hero-buttons {
        flex-direction: column;
    }

    .hero-stats {
        gap: 32px;
    }

    .phone-mockup {
        width: 240px;
        height: 490px;
    }

    .shield-large {
        font-size: 80px;
        width: 80px;
        height: 95px;
    }

    .features-grid {
        grid-template-columns: 1fr;
    }

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

    .steps {
        flex-direction: column;
        gap: 48px;
    }

    .download-title {
        font-size: 32px;
    }

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

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

    .hero-title {
        font-size: 32px;
    }

    .hero-subtitle {
        font-size: 16px;
    }

    .stat-number {
        font-size: 28px;
    }

    .section-title {
        font-size: 28px;
    }

    .feature-card {
        padding: 32px 24px;
    }
}