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

:root {
    --primary-color: #4bab7c;
    --primary-dark: #3a8f63;
    --text-color: #333333;
    --text-light: #666666;
    --bg-color: #FFFFFF;
    --bg-light: #F8F9FA;
    --border-color: #E0E0E0;
    --shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    --shadow-hover: 0 4px 20px rgba(0, 0, 0, 0.15);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    color: var(--text-color);
    background-color: var(--bg-color);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Navigation */
header {
    background-color: var(--bg-color);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow);
}

nav {
    padding: 1rem 0;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo_small {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    text-decoration: none;
    transition: color 0.3s ease;
}

.logo {
    font-size: 5rem;
    font-weight: 700;
    color: var(--primary-color);
    text-decoration: none;
    transition: color 0.3s ease;
}

.logo:hover {
    color: var(--primary-dark);
}

.nav-links {
    display: flex;
    gap: 2rem;
}

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

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

/* Main Content */
main {
    flex: 1;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Hero Section */
.hero {
    padding: 4rem 0;
    text-align: center;
    background: linear-gradient(135deg, #f0f7f3 0%, #e8f3ed 100%);
    min-height: 70vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.logo-container {
    margin-bottom: 0rem;
}

.app-logo {
    display: inline-block;
    animation: fadeInUp 0.8s ease;
    transition: transform 0.3s ease;
}

.app-logo:hover {
    transform: scale(1.05);
}

.app-logo img {
    width: 180px;
    height: 180px;
    filter: drop-shadow(0 8px 16px rgba(0, 0, 0, 0.2)) drop-shadow(0 2px 4px rgba(0, 0, 0, 0.1));
    object-fit: contain;
    transition: filter 0.3s ease;
}

h1 {
    font-size: 3rem;
    margin-bottom: 0.5rem;
    color: var(--text-color);
    animation: fadeInUp 0.8s ease 0.2s both;
}

.tagline {
    font-size: 1.5rem;
    color: var(--text-light);
    margin-bottom: 2rem;
    animation: fadeInUp 0.8s ease 0.4s both;
}

.description {
    font-size: 1.1rem;
    color: var(--text-light);
    max-width: 600px;
    margin: 0 auto 3rem;
    line-height: 1.8;
    animation: fadeInUp 0.8s ease 0.6s both;
}

.download-section {
    animation: fadeInUp 0.8s ease 0.8s both;
}

.play-store-button {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    background-color: var(--primary-color);
    color: #FFFFFF;
    padding: 1rem 2rem;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1.1rem;
    transition: all 0.3s ease;
    box-shadow: var(--shadow);
}

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

.play-store-button svg {
    width: 24px;
    height: 24px;
}

/* Privacy Page */
.privacy-content {
    padding: 4rem 0;
    max-width: 800px;
    margin: 0 auto;
}

.privacy-content h1 {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
    color: var(--text-color);
}

.last-updated {
    color: var(--text-light);
    margin-bottom: 3rem;
    font-style: italic;
}

.privacy-section {
    margin-bottom: 3rem;
}

.privacy-section h2 {
    font-size: 1.8rem;
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.privacy-section p {
    margin-bottom: 1rem;
    line-height: 1.8;
    color: var(--text-color);
}

.privacy-section ul {
    margin-left: 2rem;
    margin-top: 1rem;
    margin-bottom: 1rem;
}

.privacy-section li {
    margin-bottom: 0.5rem;
    line-height: 1.8;
    color: var(--text-color);
}

.privacy-section strong {
    color: var(--primary-color);
    font-size: 1.1rem;
}

.back-link {
    margin-top: 3rem;
    text-align: center;
}

.button {
    display: inline-block;
    background-color: var(--primary-color);
    color: #FFFFFF;
    padding: 0.75rem 2rem;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    box-shadow: var(--shadow);
}

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

/* Footer */
footer {
    background-color: var(--bg-light);
    border-top: 1px solid var(--border-color);
    padding: 2rem 0;
    margin-top: auto;
}

footer .container {
    text-align: center;
}

footer p {
    margin-bottom: 0.5rem;
    color: var(--text-light);
}

footer a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color 0.3s ease;
}

footer a:hover {
    color: var(--primary-dark);
    text-decoration: underline;
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-container {
        padding: 0 1rem;
    }

    .nav-links {
        gap: 1rem;
    }

    h1 {
        font-size: 2rem;
    }

    .tagline {
        font-size: 1.2rem;
    }

    .description {
        font-size: 1rem;
    }

    .hero {
        padding: 2rem 0;
        min-height: 60vh;
    }

    .privacy-content {
        padding: 2rem 1rem;
    }

    .privacy-content h1 {
        font-size: 2rem;
    }

    .privacy-section h2 {
        font-size: 1.5rem;
    }

    .play-store-button {
        padding: 0.875rem 1.5rem;
        font-size: 1rem;
    }

    .app-logo img {
        width: 140px;
        height: 140px;
    }
}