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

body {
    font-family: 'Arial', sans-serif;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    color: #333333;
    min-height: 100vh;
}

.header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    padding: 20px 0;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    position: relative;
    overflow: hidden;
}

.header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><polygon points="0,100 50,0 100,100" fill="rgba(255,255,255,0.1)"/></svg>') repeat-x;
    background-size: 60px 100%;
    opacity: 0.3;
}

.header-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: relative;
    z-index: 2;
}

.logo {
    display: flex;
    align-items: center;
    gap: 15px;
}

.logo-icon {
    font-size: 2.5rem;
    background: linear-gradient(45deg, #667eea, #764ba2);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.logo-text {
    font-size: 2rem;
    font-weight: bold;
    color: #ffffff;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.nav {
    display: flex;
    gap: 30px;
}

.nav a {
    color: #ffffff;
    text-decoration: none;
    font-weight: bold;
    padding: 10px 15px;
    border-radius: 5px;
    transition: all 0.3s ease;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.3);
}

.nav a:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
}

.nav a.selected {
    background: linear-gradient(45deg, #667eea, #764ba2);
    border: 2px solid rgba(255, 255, 255, 0.3);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    transform: translateY(-1px);
}

.language-switcher {
    display: flex;
    gap: 3px;
    align-items: center;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    padding: 4px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
}

.language-button {
    color: #ffffff;
    text-decoration: none;
    font-weight: bold;
    padding: 8px 14px;
    border-radius: 6px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.3);
    font-size: 0.85rem;
    min-width: 36px;
    text-align: center;
    display: block;
}

.language-button.active {
    background: rgba(255, 255, 255, 0.3);
    transform: scale(1.05);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.language-button.inactive:hover {
    background: rgba(255, 255, 255, 0.15);
    transform: scale(1.02);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 40px 20px;
}

.hero-section {
    text-align: center;
    padding: 60px 0;
    background: linear-gradient(135deg, rgba(255,255,255,0.9) 0%, rgba(255,255,255,0.7) 100%);
    border-radius: 15px;
    margin-bottom: 40px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.hero-title {
    font-size: 3rem;
    font-weight: bold;
    color: #333333;
    margin-bottom: 20px;
    background: linear-gradient(45deg, #667eea, #764ba2);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: none;
}

.hero-description {
    font-size: 1.2rem;
    color: #666666;
    line-height: 1.6;
    max-width: 600px;
    margin: 0 auto;
}

.content-section {
    background: rgba(255, 255, 255, 0.8);
    padding: 40px;
    border-radius: 10px;
    margin-bottom: 30px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.content-section:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

.section-title {
    font-size: 2rem;
    color: #333333;
    margin-bottom: 15px;
    background: linear-gradient(45deg, #667eea, #764ba2);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-description {
    font-size: 1.1rem;
    color: #555555;
    line-height: 1.6;
}

.footer {
    background: linear-gradient(135deg, #2c3e50 0%, #34495e 100%);
    color: #ffffff;
    padding: 40px 0 20px 0;
    margin-top: 60px;
}

.footer-menu {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: center;
    gap: 30px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.footer-link {
    color: #ffffff;
    text-decoration: none;
    font-weight: 500;
    padding: 8px 12px;
    border-radius: 5px;
    transition: all 0.3s ease;
}

.footer-link:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-2px);
}

.footer-disclaimer {
    text-align: center;
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.9rem;
    margin: 15px 0 10px 0;
    font-style: italic;
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
    padding: 0 20px;
}

.footer p:last-child {
    text-align: center;
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.85rem;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Mobile Responsive Styles */
@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        gap: 20px;
        text-align: center;
    }

    .nav {
        gap: 15px;
        flex-wrap: wrap;
        justify-content: center;
    }

    .nav a {
        padding: 8px 12px;
        font-size: 0.9rem;
    }

    .logo-text {
        font-size: 1.5rem;
    }

    .logo-icon {
        font-size: 2rem;
    }

    .hero-title {
        font-size: 2.2rem;
    }

    .hero-description {
        font-size: 1.1rem;
        padding: 0 15px;
    }

    .content-section {
        padding: 25px 20px;
        margin-bottom: 20px;
    }

    .section-title {
        font-size: 1.6rem;
    }

    .section-description {
        font-size: 1rem;
    }

    .container {
        padding: 20px 15px;
    }

    .hero-section {
        padding: 40px 20px;
        margin-bottom: 30px;
    }

    .footer-menu {
        gap: 15px;
        flex-direction: column;
        align-items: center;
    }

    .footer-link {
        font-size: 0.9rem;
        padding: 6px 10px;
    }

    .footer-disclaimer {
        font-size: 0.8rem;
        margin: 12px 0 8px 0;
    }
}

/* Extra small screens */
@media (max-width: 480px) {
    .hero-title {
        font-size: 1.8rem;
    }

    .nav {
        gap: 10px;
    }

    .nav a {
        padding: 6px 10px;
        font-size: 0.85rem;
    }

    .language-switcher {
        padding: 2px;
        gap: 2px;
    }

    .language-button {
        padding: 6px 10px;
        font-size: 0.8rem;
        min-width: 32px;
    }
}

/* Global link styles */
a {
    color: #667eea;
    text-decoration: underline;
    text-underline-offset: 0.2em;
    text-decoration-thickness: 2px;
    text-decoration-color: rgba(102, 126, 234, 0.4);
    transition: color 0.2s ease, text-decoration-color 0.2s ease;
}

a:hover {
    color: #764ba2;
    text-decoration-color: #764ba2;
}

a:focus-visible {
    outline: 2px solid #667eea;
    outline-offset: 2px;
    border-radius: 2px;
}

a:active {
    opacity: 0.9;
}

/* Disabled state support */
a[aria-disabled="true"],
a.disabled {
    opacity: 0.6;
    pointer-events: none;
    text-decoration-color: rgba(0, 0, 0, 0.2);
}