* {
    box-sizing: border-box;
    font-family: Arial, sans-serif;
}

body {
    margin: 0;
    background: #0f172a;
    color: #e2e8f0;
}

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 24px;
    background: #111827;
    color: #f8fafc;
    border-bottom: 1px solid #1f2937;
}

.login-btn {
    border: none;
    background: #3b82f6;
    color: #ffffff;
    padding: 10px 16px;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 600;
}

.login-btn:hover {
    background: #2563eb;
}

main {
    max-width: 900px;
    margin: 24px auto;
    padding: 0 16px;
}

.panel-anuncios {
    background: #111827;
    border-radius: 12px;
    padding: 20px;
    box-shadow: 0 8px 18px rgba(0, 0, 0, 0.35);
    border: 1px solid #1f2937;
}

.anuncio {
    list-style: none;
    border: 1px solid #334155;
    border-radius: 10px;
    padding: 16px;
    margin-bottom: 14px;
    background: #0b1220;
}

.anuncio:last-child {
    margin-bottom: 0;
}

.fotos {
    display: flex;
    gap: 12px;
    margin-top: 12px;
}

.foto-placeholder {
    width: 130px;
    height: 90px;
    border: 1px dashed #64748b;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    font-size: 12px;
    color: #cbd5e1;
    background: #1e293b;
    padding: 8px;
}