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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.7;
    color: #37352f;
    background: #ffffff;
    min-height: 100vh;
    padding: 0;
}

/* Language Switcher */
.language-switcher {
    max-width: 900px;
    margin: 0 auto;
    padding: 24px 96px 0;
    display: flex;
    gap: 8px;
    justify-content: flex-end;
}

.lang-btn {
    padding: 6px 12px;
    border: none;
    background: transparent;
    color: rgba(55, 53, 47, 0.6);
    cursor: pointer;
    border-radius: 3px;
    font-size: 14px;
    font-weight: 400;
    transition: background 0.1s ease;
}

.lang-btn:hover {
    background: rgba(55, 53, 47, 0.06);
}

.lang-btn.active {
    background: rgba(55, 53, 47, 0.06);
    color: #37352f;
}

/* Container */
.container {
    max-width: 900px;
    margin: 0 auto;
    background: white;
}

/* Content Sections */
.content {
    display: none;
}

.content.active {
    display: block;
}

/* Header */
header {
    background: transparent;
    color: #37352f;
    padding: 48px 96px 32px;
    border-bottom: 1px solid #e9e9e7;
}

header h1 {
    font-size: 2.5em;
    margin-bottom: 12px;
    font-weight: 700;
    line-height: 1.2;
    color: #37352f;
}

.app-name {
    font-size: 1em;
    margin-bottom: 8px;
    font-weight: 400;
    color: #787774;
}

.last-updated {
    font-size: 0.875em;
    color: #9b9a97;
}

/* Main Content */
main {
    padding: 40px 96px 80px;
}

section {
    margin-bottom: 48px;
}

section:last-child {
    margin-bottom: 0;
}

h2 {
    color: #37352f;
    font-size: 1.875em;
    margin-bottom: 8px;
    margin-top: 24px;
    padding-bottom: 0;
    border-bottom: none;
    font-weight: 600;
    line-height: 1.3;
}

h3 {
    color: #37352f;
    font-size: 1.25em;
    margin-top: 24px;
    margin-bottom: 8px;
    font-weight: 600;
}

p {
    margin-bottom: 12px;
    color: #37352f;
    text-align: left;
    font-size: 1em;
}

ul {
    margin-left: 24px;
    margin-bottom: 12px;
    padding-left: 4px;
}

li {
    margin-bottom: 8px;
    color: #37352f;
    line-height: 1.7;
}

li strong {
    color: #37352f;
}

strong {
    color: #37352f;
    font-weight: 600;
}

/* Contact Info */
.contact-info {
    background: #f7f6f3;
    padding: 16px;
    border-left: 2px solid #37352f;
    margin-top: 12px;
    border-radius: 3px;
}

.placeholder {
    color: #eb5757;
    font-weight: 500;
    background: transparent;
    padding: 0;
}

/* Footer */
footer {
    background: transparent;
    color: #9b9a97;
    text-align: center;
    padding: 40px 96px;
    font-size: 0.875em;
    border-top: 1px solid #e9e9e7;
}

footer p {
    margin: 0;
    color: #9b9a97;
}

/* Responsive Design */
@media (max-width: 900px) {
    .language-switcher {
        padding: 24px 48px 0;
    }

    header {
        padding: 48px 48px 32px;
    }

    main {
        padding: 40px 48px 80px;
    }

    footer {
        padding: 40px 48px;
    }
}

@media (max-width: 640px) {
    .language-switcher {
        padding: 16px 24px 0;
        flex-wrap: wrap;
    }

    header {
        padding: 32px 24px 24px;
    }

    header h1 {
        font-size: 2em;
    }

    main {
        padding: 32px 24px 60px;
    }

    h2 {
        font-size: 1.5em;
    }

    h3 {
        font-size: 1.125em;
    }

    ul {
        margin-left: 20px;
    }

    footer {
        padding: 32px 24px;
    }
}

/* Print Styles */
@media print {
    body {
        background: white;
        padding: 0;
    }

    .language-switcher {
        display: none;
    }

    .content:not(.active) {
        display: none !important;
    }

    section {
        page-break-inside: avoid;
    }
}

/* Selection Color */
::selection {
    background: rgba(55, 53, 47, 0.1);
    color: #37352f;
}

::-moz-selection {
    background: rgba(55, 53, 47, 0.1);
    color: #37352f;
}