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

:root {
    --gradient-start: #667eea;
    --gradient-end: #764ba2;
    --text-primary: #ffffff;
    --text-secondary: rgba(255, 255, 255, 0.9);
    --text-muted: rgba(255, 255, 255, 0.7);
    --card-bg: rgba(255, 255, 255, 0.12);
    --card-border: rgba(255, 255, 255, 0.25);
    --cta-bg: #ffffff;
    --cta-text: #667eea;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: linear-gradient(135deg, var(--gradient-start) 0%, var(--gradient-end) 100%);
    min-height: 100vh;
    color: var(--text-primary);
    line-height: 1.6;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 40px 20px;
}

.hero {
    text-align: center;
    padding: 40px 0 60px;
    animation: fadeIn 0.6s ease-out;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.app-icon {
    width: 120px;
    height: 120px;
    border-radius: 26px;
    margin: 0 auto 24px;
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.25);
    overflow: hidden;
}

.app-icon img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.app-name {
    font-size: 48px;
    font-weight: 700;
    margin-bottom: 16px;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

.tagline {
    font-size: 22px;
    color: var(--text-secondary);
    max-width: 500px;
    margin: 0 auto 32px;
}

.cta-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    background: var(--cta-bg);
    color: var(--cta-text);
    border: none;
    border-radius: 30px;
    padding: 18px 40px;
    font-size: 18px;
    font-weight: 700;
    cursor: pointer;
    box-shadow: 0 6px 24px rgba(0, 0, 0, 0.25);
    transition: transform 0.2s, box-shadow 0.2s;
    text-decoration: none;
}

.cta-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 32px rgba(0, 0, 0, 0.3);
}

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

.cta-button .apple-icon {
    width: 20px;
    height: 24px;
    display: inline-block;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 384 512'%3E%3Cpath fill='%23667eea' d='M318.7 268.7c-.2-36.7 16.4-64.4 50-84.8-18.8-26.9-47.2-41.7-84.7-44.6-35.5-2.8-74.3 20.7-88.5 20.7-15 0-49.4-19.7-76.4-19.7C63.3 141.2 4 184.8 4 273.5q0 39.3 14.4 81.2c12.8 36.7 59 126.7 107.2 125.2 25.2-.6 43-17.9 75.8-17.9 31.8 0 48.3 17.9 76.4 17.9 48.6-.7 90.4-82.5 102.6-119.3-65.2-30.7-61.7-90-61.7-91.9zm-56.6-164.2c27.3-32.4 24.8-61.9 24-72.5-24.1 1.4-52 16.4-67.9 34.9-17.5 19.8-27.8 44.3-25.6 71.9 26.1 2 49.9-11.4 69.5-34.3z'/%3E%3C/svg%3E");
    background-size: contain;
    background-repeat: no-repeat;
    background-position: center;
}

.sticky-cta {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(to top, rgba(102, 126, 234, 0.98) 0%, rgba(102, 126, 234, 0.95) 70%, transparent 100%);
    padding: 16px 20px 24px;
    z-index: 1000;
    transform: translateY(100%);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.sticky-cta.visible {
    transform: translateY(0);
}

.sticky-cta .cta-button {
    width: 100%;
    max-width: 400px;
    margin: 0 auto;
    display: flex;
}

@media (min-width: 601px) {
    .sticky-cta {
        display: none;
    }
}

.social-proof {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 24px;
    padding: 24px 20px;
    margin: 0 0 20px;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 16px;
    backdrop-filter: blur(10px);
}

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

.proof-text {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.proof-rating {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.proof-stars {
    color: #fbbf24;
    font-size: 18px;
    letter-spacing: 2px;
}

.proof-label {
    font-size: 13px;
    color: var(--text-muted);
}

.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
    padding: 20px 0 40px;
}

.feature-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 20px;
    padding: 28px 24px;
    backdrop-filter: blur(10px);
    transition: transform 0.2s, background 0.2s;
}

.feature-card:hover {
    transform: translateY(-4px);
    background: rgba(255, 255, 255, 0.18);
}

.feature-icon {
    font-size: 36px;
    margin-bottom: 16px;
}

.feature-title {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 8px;
}

.feature-description {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.5;
}

.description-section {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 24px;
    padding: 40px 32px;
    margin: 40px 0;
    backdrop-filter: blur(10px);
}

.description-section h2 {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 20px;
    text-align: center;
}

.description-section p {
    font-size: 17px;
    color: var(--text-secondary);
    margin-bottom: 16px;
    text-align: center;
}

.description-section p:last-child {
    margin-bottom: 0;
}

.bottom-cta {
    text-align: center;
    padding: 40px 0 60px;
}

.bottom-cta h2 {
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 24px;
}

.footer {
    text-align: center;
    padding: 24px 0;
    font-size: 14px;
    color: var(--text-muted);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

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

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

@media (max-width: 600px) {
    .container {
        padding: 24px 16px;
    }

    .hero {
        padding: 24px 0 40px;
    }

    .app-icon {
        width: 100px;
        height: 100px;
        border-radius: 22px;
    }

    .app-name {
        font-size: 36px;
    }

    .tagline {
        font-size: 18px;
    }

    .cta-button {
        padding: 16px 32px;
        font-size: 16px;
        width: 100%;
        max-width: 320px;
    }

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

    .feature-card {
        padding: 24px 20px;
    }

    .description-section {
        padding: 28px 20px;
    }

    .description-section h2 {
        font-size: 24px;
    }

    .bottom-cta h2 {
        font-size: 26px;
    }
}

[dir="rtl"] {
    text-align: right;
}

[dir="rtl"] .features {
    direction: rtl;
}

[dir="rtl"] .cta-button {
    flex-direction: row-reverse;
}