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

body {
    font-family: Arial, Verdana, sans-serif;
    font-size: clamp(1.1rem, 2vw, 1.25rem);
    line-height: 1.6;
    max-width: 1000px;
    padding: 2rem 1rem;
    margin: 0 auto;
    box-sizing: border-box;
    background-color: #ffffff;
    color: #000000;
}

/* Container principal - largura fixa como sites antigos */
.container {
    width: 100%;
    margin: 0 auto;
    background-color: #ffffff;
    min-height: 100vh;
}

/* Header */
header {
    position: relative;
    text-align: center;
    padding: 2rem 1rem;
    border-bottom: 2px solid #000000;
    background-color: #ffffff;
}

/* QR Code centralizado */
.qr-section {
    text-align: center;
    border: 1px solid #000000;
    padding: 8px;
    background-color: #f0f0f0;
    margin: 0 auto 20px auto;
    display: inline-block;
}

.qr-text {
    font-size: 12px;
    font-weight: bold;
    letter-spacing: 1px;
    margin-bottom: 5px;
    color: #000000;
    text-align: center;
    width: 160px;
}

.qr-code {
    display: block;
    border: 1px solid #cccccc;
    margin: 0 auto;
    width: 160px;
    height: 160px;
}

/* Títulos */
header h1 {
    font-size: clamp(24px, 4vw, 32px);
    font-weight: bold;
    color: #000000;
    margin: 0 0 1rem 0;
}

.subtitle {
    font-size: clamp(14px, 2.5vw, 18px);
    color: #003366;
    font-style: italic;
    margin-top: 0.5rem;
    margin-bottom: 1.5rem;
    text-align: center;
    line-height: 1.4;
}

/* Store link */
.store-link {
    font-size: clamp(12px, 2vw, 14px);
    color: #666666;
    text-align: center;
    margin-top: 1rem;
    margin-bottom: 0.5rem;
}

.store-link a {
    color: #0000ee;
    text-decoration: underline;
    font-size: inherit;
}

.store-link a:visited {
    color: #551a8b;
}

.store-link a:hover {
    background-color: #ffff99;
}

/* Layout principal com sidebar */
.main-content {
    display: table;
    width: 100%;
    border-collapse: separate;
}

.sidebar {
    display: table-cell;
    width: 200px;
    vertical-align: top;
    padding: 10px;
    background-color: #f8f8f8;
    border-right: 1px solid #cccccc;
}

.content {
    display: table-cell;
    vertical-align: top;
    padding: 10px;
}

/* Caixas da sidebar */
.sidebar-box {
    border: 1px solid #cccccc;
    margin-bottom: 15px;
    background-color: #ffffff;
}

.sidebar-box h3 {
    background-color: #e0e0e0;
    padding: 5px 8px;
    margin: 0;
    font-size: 14px;
    font-weight: bold;
    border-bottom: 1px solid #cccccc;
    color: #000000;
}

.sidebar-box ul {
    list-style: none;
    padding: 8px;
}

.sidebar-box li {
    margin-bottom: 3px;
}

.sidebar-box a {
    color: #0000ee;
    text-decoration: underline;
    font-size: 14px;
}

.sidebar-box a:visited {
    color: #551a8b;
}

.sidebar-box a:hover {
    background-color: #ffff99;
}

/* Caixas de conteúdo */
.content-box {
    border: 1px solid #000000;
    margin-bottom: 2rem;
    background-color: #ffffff;
    padding: 1.2rem 1.5rem;
}

.content-box h2 {
    background-color: #e0e0e0;
    padding: 8px 12px;
    margin: 0;
    font-size: 16px;
    font-weight: bold;
    border-bottom: 1px solid #000000;
    color: #000000;
}

/* Entradas "Don't learn" */
.entry-box {
    border: 1px solid #cccccc;
    margin: 1rem 0;
    padding: 1.2rem 1.5rem;
    background-color: #fafafa;
}

.entry-box h3 {
    font-size: 16px;
    font-weight: bold;
    color: #003366;
    margin-bottom: 8px;
    line-height: 1.3;
}

.entry-box p {
    font-size: 15px;
    color: #000000;
    line-height: 1.4;
}

/* Caixa do assistente */
.assistant-box {
    padding: 1.5rem;
    border: 1px solid #cccccc;
    margin: 0;
    background-color: #f0f8ff;
    text-align: center;
}

.assistant-box p {
    margin-bottom: 1rem;
    font-size: inherit;
}

.assistant-box strong {
    font-weight: bold;
}

.assistant-box a {
    color: #0000ee;
    text-decoration: underline;
    font-weight: bold;
}

.assistant-box a:visited {
    color: #551a8b;
}

.assistant-box a:hover {
    background-color: #ffff99;
}



/* Footer */
footer {
    padding: 2rem 1rem;
    text-align: center;
    background-color: #f8f8f8;
}

footer hr {
    border: none;
    border-top: 1px solid #cccccc;
    margin-bottom: 10px;
}

footer p {
    font-size: clamp(14px, 1.8vw, 16px);
    color: #666666;
}

.nostr-link {
    font-size: clamp(12px, 1.6vw, 14px);
    color: #999999;
    margin-top: 8px;
    font-family: monospace;
    word-break: break-all;
    overflow-wrap: break-word;
    padding: 0 10px;
}

/* Links gerais */
a {
    color: #0000ee;
    text-decoration: underline;
}

a:visited {
    color: #551a8b;
}

a:hover {
    background-color: #ffff99;
}

/* Responsividade básica para telas menores */
@media (max-width: 820px) {
    .container {
        width: 100%;
        margin: 0;
    }

    .main-content {
        display: block;
    }

    .sidebar {
        display: block;
        width: 100%;
        border-right: none;
        border-bottom: 1px solid #cccccc;
    }

    .content {
        display: block;
    }

    .qr-section {
        margin: 0 auto 15px auto;
    }

    
}

@media (max-width: 480px) {
    body {
        padding: 1rem;
    }

    .qr-section {
        margin: 0 auto 15px auto;
    }

    .qr-text {
        font-size: 11px;
    }

    header h1 {
        font-size: 20px;
    }

    .content-box {
        padding: 0.8rem;
        margin-bottom: 1rem;
    }

    .entry-box {
        margin: 0.5rem 0;
        padding: 0.8rem;
    }

    .assistant-box {
        padding: 1rem;
    }

    .language-selector {
        position: fixed;
        top: 0.5rem;
        right: 0.5rem;
        padding: 0.25rem;
    }

    .language-selector a {
        font-size: 1.2rem;
        margin: 0 0.1rem;
        padding: 0.2rem;
    }
}